US20060268355A1 - Method and system for promoting scanning speed - Google Patents
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- US20060268355A1 US20060268355A1 US11/502,063 US50206306A US2006268355A1 US 20060268355 A1 US20060268355 A1 US 20060268355A1 US 50206306 A US50206306 A US 50206306A US 2006268355 A1 US2006268355 A1 US 2006268355A1
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- 230000001737 promoting effect Effects 0.000 title abstract description 8
- 230000005540 biological transmission Effects 0.000 claims abstract description 56
- 230000009467 reduction Effects 0.000 claims abstract description 5
- 230000004044 response Effects 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 abstract description 16
- 230000008859 change Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00236—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer
- H04N1/00241—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer using an image reading device as a local input to a computer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/00127—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture
- H04N1/00204—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server
- H04N1/00236—Connection or combination of a still picture apparatus with another apparatus, e.g. for storage, processing or transmission of still picture signals or of information associated with a still picture with a digital computer or a digital computer system, e.g. an internet server using an image reading or reproducing device, e.g. a facsimile reader or printer, as a local input to or local output from a computer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0015—Control of image communication with the connected apparatus, e.g. signalling capability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0008—Connection or combination of a still picture apparatus with another apparatus
- H04N2201/0034—Details of the connection, e.g. connector, interface
- H04N2201/0048—Type of connection
- H04N2201/0049—By wire, cable or the like
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/04—Scanning arrangements
- H04N2201/0402—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207
- H04N2201/0462—Arrangements not specific to a particular one of the scanning methods covered by groups H04N1/04 - H04N1/207 for reducing inactive scanning periods, e.g. increasing speed of carriage during return movement
Definitions
- the scanning speed is another essential functional criteria of scanners.
- the scanning speed is the time that the scanner sends back scanned image to the host device after the scanning work is started. If the transmission rate is slower, the image data will be accumulated in a memory buffer, and the memory buffer may finally get full after only a portion of the original is scanned. In order to prevent the loss of the image data, the scanning operation is halted when the memory buffer is full and, then resumed when the memory buffer is empty or available for storing more data again.
- a scanning module driven by a motor is stopped and moved backward for a predetermined number of steps, due to the first few step motions of the scanning module being usually quite shaky and unstable that is caused by mechanical vibrations resulting in affecting the quality of the output in that period. Then, the scanning module is forwarded from there when the data accumulated in the memory buffer is transmitted to the host device.
- the processes of stopping and restarting the scan are alternatively performed till the scanning operation is completed. This method of preventing the loss of image data is useful, but it may cause the scanning of an original to take a long time because the scanning is stopped and restarted repeatedly.
- the procedure of moving the scanning module backward and forward or, in other words, the procedure of stopping and restarting the scanning module is so called a smearing or start-stop process.
- This procedure might help to solve the problem of unstable scanning module or memory buffer full but it takes time to move the scanning module backward and forward, which may reduce the overall scanning speed of the scanner.
- start-stop process in order to overcome the problems associated with data transfer from the scanner to the computer due to the varying transmission rate of the computer, lots of methods have been proposed.
- the increase in size of the memory buffer is one of the methods. The scanning of the original is thereby not affected by the varying capability of the computer to receive data.
- Enlarging memory buffer is quite straight forward and easy but with some drawbacks, that is, it also increases cost and complicates the manufacture of a scanner. Moreover, it may not really solve the problem when a high-resolution scan is performed, which can generate a huge amount of image data within a very short period of time, and it is not feasible to simply increase the memory buffer size to alleviate the problem.
- a scanner with fast scanning speed can shorten the time while scanning of an original, speed up and increase work efficiency.
- it is imperative to develop a method and a system which reduces the possibility of memory buffer being full leading to the reduction of the time wasting on start-stop processes and thereby promoting the scanning speed without requiring the increase in size of a memory buffer.
- the present invention is directed to a method and a system for promoting the scanning speed.
- the key aspect of the present invention is by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the system clock is adjusted to produce the data at a rate that can reduce the possibility of memory buffer full leading to the reduction in the time wasting on start-stop processes and therefore promote the scanning speed without requiring the increase in size of a memory buffer.
- a method for optimizing the scanning speed of a scanning system by adjusting system clock in response to a transit interface.
- the method comprises steps of determining a transmission rate of the transit interface, adjusting system clock responsive to the transmission rate of the transit interface to change a data generated rate, and scanning an original to generate data at the data generated rate.
- the data generated rate can be any rate reducing the data accumulation.
- the step of adjusting the system clock comprises multiplying a frequency generated by a clock generator by a multiplier according to the transmission rate, wherein the multiplier can be selected from a plurality of predetermined values.
- the method further comprises communicating the data from the scanning system to a host device through the transit interface.
- a method of optimizing scanning speed comprises steps of determining a transmission rate of a transit interface, comparing the transmission rate with a predetermined value, adjusting a system clock when the transmission rate is not equal to the predetermined value, and scanning an original to generate a data at a rate controlled by the system clock.
- the step of adjusting the system clock comprises increasing the system clock to increase the data generated rate when the transmission rate is faster than the predetermined value and reducing the system clock to reduce the data generated rate when the transmission rate is lower than the predetermined value.
- the method further comprises communicating the data from the scanning system to a host device through the transit interface.
- a scanning system with adjustable data generated rate comprises a plurality of transit interfaces for data communicating between the scanning system and a host device, a system clock generator for generating a plurality of corresponding system clocks responsive to the transit interfaces, and a scanning module for scanning an original to generate the data at a rate controlled by the corresponding system clocks.
- the transit interface can be USB1.1, USB2.0, IEEE1394, EPP, and SCSI and not limited to those.
- the system clock generator When a transit interface with different transmission rates such as USB (USB1.1, USB2.0) and IEEE1394 (1394a, 1394b) series, the system clock generator generates the corresponding system clocks according to the transmission rates.
- the system clock generator comprises a clock generator such as crystal oscillator generating a frequency and a frequency multiplier for multiplying the frequency by a multiplier to generate the corresponding system clocks.
- FIG. 1 is a schematic block diagram of a scanning system in accordance with the present invention
- FIG. 2A is a flow diagram of a scanning method in accordance with one embodiment of the present invention.
- FIG. 2B is a flow diagram of a scanning method in accordance with another embodiment of the present invention.
- the digital data produced by a scanner is usually generated at a fixed rate due to the implement of a system clock of a constant duty cycle and operated at a fixed frequency. Therefore, the fixed data generated rate does not serve to optimize the scanning speed in response to the difference in transmission rate of a variety of transit interfaces.
- the start-stop process is unavoidable such that the time wasting on the start-stop process is also inevitable.
- the optimization of the scanning speed is out of question.
- the present invention provides a method and a system for adjusting the system clock corresponding to the transit interface to generate the image data at a rate for avoiding the start-stop processes and optimizing the scanning speed.
- One aspect of the present invention is that due to the difference in transmission rate, the data is generated at a rate corresponding to the transmission rate of the transit interface to reduce the possibility of start-stop processes, that is, to prevent a memory buffer full.
- Other aspect of the present invention is that the data generated rate is changed by means of adjusting the system clock.
- the scanning system 100 comprises a clock generator 110 , a frequency multiplier 120 , a scanning module 130 , a data memory buffer 140 , and a plurality of transit interfaces 150 such as transit interfaces 150 a , 150 b , and 150 c .
- the scanning module 130 including a detector 160 , an analog to digital converter (ADC) 170 , and an image processor 180 , is for scanning an original to generate image data at a rate controlled by a system clock.
- the transit interface 150 is for the data communication from a data generator to a host device, in the embodiment, from the scanning system 100 to a computer.
- the transit interface can be any commercial products with any communication protocols and transmission rates such as USB1.1, USB2.0, IEEE1394, EPP, and SCSI and not limited to those.
- the clock generator 110 can be a crystal oscillator, which produces a constant frequency (F).
- the frequency multiplier 120 can be a phase lock loop circuit, which multiplies the constant frequency (F) by a multiplier (M) to adjust the system clock according to the transit interface 150 , thus the image data is generated at a rate preventing the memory buffer 140 full.
- the combination of the clock generator 110 and the frequency multiplier 120 is a system clock generator, which generates corresponding system clocks according to the transit interface or the transmission rate of the transit interface. Therefore, the scanning system 130 is operated at a multiplied frequency (F times M) for generating data controlled by the system clock.
- the frequency of the system clock can be determined by multiplying the frequency (F) generated by the clock generator 110 by one multiplier selected from a plurality of built-in multipliers according to the transmission rate.
- every transit interface has a corresponding frequency of the system clock built in the scanning system.
- the scanning module 130 is operated at the corresponding frequency of the system clock to generate the image data.
- the frequency of the system clock is the frequency (F) times 2 and 3, respectively, wherein 2 and 3 are selected from the plurality of built-in multipliers. That is, the frequency of the system clock for USB1.1 and IEEE1394 are 2F and 3F, respectively.
- a method for adjusting a system clock according to the transit interface is also provided, which promotes the scanning speed.
- the transit interface used in the scanning process is determined such as the transit interface 150 a is implemented. It is noted that when the transit interface is determined, the transmission rate can also be determined.
- the transit interface can be a USB 2.0 with a transmission rate of 480 Mbit/sec or running at a rate of 12 Mbit/sec, or a USB1.1 with a transmission rate of 12 Mbit/sec.
- the transmission rate of the transit interface can be determined by a signal sent to the scanning system in the process of initializing the scanning system or by a firmware prior to starting a scanning operation.
- a system clock is determined according to the transit interface. That is, the scanning module is operated at a frequency to generate data at a rate that prevents the memory buffer full.
- the frequency of the system clock can be determined by multiplying the frequency (F) of a clock generator by a multiplier responsive to the transmission rate of the transit interface.
- the USB transit interface can have three transmission rates, high-speed of 480 Mbit/sec, full-speed of 12 Mbit/sec, and low-speed which is seldom used for data transfer.
- the frequency of the system clock (or the multiplier) is determined when the transmission rate is determined.
- FIG. 2B shows a flow diagram of promoting the scanning speed in accordance with another embodiment.
- the method starts from the same step of 210 , the transit interface used in the scanning process is determined such as the transit interface 150 a is implemented.
- decision of adjusting the system clock is made.
- the system clock is adjusted according to the result of comparing the transmission rate of the transit interface 150 a with a predetermined transmission rate.
- the system clock is adjusted in the step of 250 .
- the system clock is increased to increase the data generated rate.
- the system clock is adjusted to reduce the data generated rate. Then, in the step of 260 , the scanning of an original is started to generate data at a rate controlled by the system clock.
- the transmission rate of a transit interface 150 such as USB 1.1 is first determined.
- an optical detector 160 such as charge coupled device (CCD) generates analog image data in the scanning of the original
- the analog to digital converter (ADC) 170 is for converting the analog image data to digital data.
- the image processor 180 of the scanning module 130 generates the image data under the control of the system clock with a corresponding frequency (such as 2F in the example) produced by the frequency multiplier 120 such as phase lock loop circuit, which is the frequency (F) generated by the clock generator 110 times a multiplier such as 2. Therefore, the data generated rate is changed to a rate preventing the memory buffer 140 full leading to the reduction in the time wasting on the start-stop process.
- the scanning speed is promoted without the requirement of increasing the memory buffer.
Abstract
Description
- 1. Field of the Invention
- The present invention generally relates to a method and a system for promoting scanning speed, and more particularly to a method and a system for promoting scanning speed by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface.
- 2. Description of the Prior Art
- Scanners are widely applied for the ability of generating digital representation of the information comprised by an original. The digital representation typically processed on a host device such as computer, and through an I/O cable data is transmitted from the scanner to the computer. The data transmission rate from the scanner to the host device is depended on the communication protocol used between the scanner and the host device. Ideally, digital data transferred to the host device is produced at the same rate that the host device can accept it. Therefore, no memory buffer is required for accumulating data that is waiting for transfer. However, the digital data is usually produced at a rate quite different from the data reception rate of the host device. If the transmission rate is higher than the data generated rate of the scanner, the scanner can run in full speed with no possible loss of data. However, the data generated rate of a scanner is usually faster than the transmission rate of the host computer. Therefore, when the transmission rate is lower than the data generated rate, issues related to the efficiency of the scanning operation often arise in the scanning operation.
- Besides optical resolution, the scanning speed is another essential functional criteria of scanners. The scanning speed is the time that the scanner sends back scanned image to the host device after the scanning work is started. If the transmission rate is slower, the image data will be accumulated in a memory buffer, and the memory buffer may finally get full after only a portion of the original is scanned. In order to prevent the loss of the image data, the scanning operation is halted when the memory buffer is full and, then resumed when the memory buffer is empty or available for storing more data again. In other words, when the memory buffer is full, a scanning module driven by a motor is stopped and moved backward for a predetermined number of steps, due to the first few step motions of the scanning module being usually quite shaky and unstable that is caused by mechanical vibrations resulting in affecting the quality of the output in that period. Then, the scanning module is forwarded from there when the data accumulated in the memory buffer is transmitted to the host device. The processes of stopping and restarting the scan are alternatively performed till the scanning operation is completed. This method of preventing the loss of image data is useful, but it may cause the scanning of an original to take a long time because the scanning is stopped and restarted repeatedly.
- The procedure of moving the scanning module backward and forward or, in other words, the procedure of stopping and restarting the scanning module is so called a smearing or start-stop process. This procedure might help to solve the problem of unstable scanning module or memory buffer full but it takes time to move the scanning module backward and forward, which may reduce the overall scanning speed of the scanner. Besides the start-stop process, in order to overcome the problems associated with data transfer from the scanner to the computer due to the varying transmission rate of the computer, lots of methods have been proposed. The increase in size of the memory buffer is one of the methods. The scanning of the original is thereby not affected by the varying capability of the computer to receive data. Enlarging memory buffer is quite straight forward and easy but with some drawbacks, that is, it also increases cost and complicates the manufacture of a scanner. Moreover, it may not really solve the problem when a high-resolution scan is performed, which can generate a huge amount of image data within a very short period of time, and it is not feasible to simply increase the memory buffer size to alleviate the problem.
- A scanner with fast scanning speed can shorten the time while scanning of an original, speed up and increase work efficiency. Thus, it is imperative to develop a method and a system which reduces the possibility of memory buffer being full leading to the reduction of the time wasting on start-stop processes and thereby promoting the scanning speed without requiring the increase in size of a memory buffer.
- The present invention is directed to a method and a system for promoting the scanning speed. The key aspect of the present invention is by adjusting system clock to change the data generated rate corresponding to the transmission rate of the transit interface. Therefore, in response to the transmission rate of the transit interface, the system clock is adjusted to produce the data at a rate that can reduce the possibility of memory buffer full leading to the reduction in the time wasting on start-stop processes and therefore promote the scanning speed without requiring the increase in size of a memory buffer.
- It is another object of this invention that a method and a system for avoiding a start-stop process of the scanning mechanism are provided.
- It is a further object of this invention that a method and a system for changing the data generated rate by use of adjusting the system clock corresponding to the transit interface are provided.
- It is another further object of this invention that a method and a system for promoting scanning speed without requiring the increase in size of a memory buffer are provided.
- In accordance with the present invention, in one embodiment, a method is provided for optimizing the scanning speed of a scanning system by adjusting system clock in response to a transit interface. The method comprises steps of determining a transmission rate of the transit interface, adjusting system clock responsive to the transmission rate of the transit interface to change a data generated rate, and scanning an original to generate data at the data generated rate. The data generated rate can be any rate reducing the data accumulation. The step of adjusting the system clock comprises multiplying a frequency generated by a clock generator by a multiplier according to the transmission rate, wherein the multiplier can be selected from a plurality of predetermined values. The method further comprises communicating the data from the scanning system to a host device through the transit interface.
- In another embodiment, a method of optimizing scanning speed comprises steps of determining a transmission rate of a transit interface, comparing the transmission rate with a predetermined value, adjusting a system clock when the transmission rate is not equal to the predetermined value, and scanning an original to generate a data at a rate controlled by the system clock. The step of adjusting the system clock comprises increasing the system clock to increase the data generated rate when the transmission rate is faster than the predetermined value and reducing the system clock to reduce the data generated rate when the transmission rate is lower than the predetermined value. The method further comprises communicating the data from the scanning system to a host device through the transit interface.
- In a third embodiment, a scanning system with adjustable data generated rate comprises a plurality of transit interfaces for data communicating between the scanning system and a host device, a system clock generator for generating a plurality of corresponding system clocks responsive to the transit interfaces, and a scanning module for scanning an original to generate the data at a rate controlled by the corresponding system clocks. The transit interface can be USB1.1, USB2.0, IEEE1394, EPP, and SCSI and not limited to those. When a transit interface with different transmission rates such as USB (USB1.1, USB2.0) and IEEE1394 (1394a, 1394b) series, the system clock generator generates the corresponding system clocks according to the transmission rates. The system clock generator comprises a clock generator such as crystal oscillator generating a frequency and a frequency multiplier for multiplying the frequency by a multiplier to generate the corresponding system clocks.
- The foregoing aspects and many of the attendant advantages of this invention will become more readily appreciated as the same becomes better understood by reference to the following detailed description, when taken in conjunction with the accompanying drawings, wherein:
-
FIG. 1 is a schematic block diagram of a scanning system in accordance with the present invention; -
FIG. 2A is a flow diagram of a scanning method in accordance with one embodiment of the present invention; and -
FIG. 2B is a flow diagram of a scanning method in accordance with another embodiment of the present invention. - Some sample embodiments of the invention will now be described in greater detail. Nevertheless, it should be noted that the present invention can be practiced in a wide range of other embodiments besides those explicitly described, and the scope of the present invention is expressly not limited except as specified in the accompanying claims.
- It is widely known in the prior art that the digital data produced by a scanner is usually generated at a fixed rate due to the implement of a system clock of a constant duty cycle and operated at a fixed frequency. Therefore, the fixed data generated rate does not serve to optimize the scanning speed in response to the difference in transmission rate of a variety of transit interfaces. In other words, when the image data is generated at a rate faster than the transmission rate of a transit interface, or when a huge amount of the image data is generated within a very short time causing a memory buffer full, the start-stop process is unavoidable such that the time wasting on the start-stop process is also inevitable. Thus, the optimization of the scanning speed is out of question. In view of the drawbacks depicted in the prior art, the present invention provides a method and a system for adjusting the system clock corresponding to the transit interface to generate the image data at a rate for avoiding the start-stop processes and optimizing the scanning speed.
- One aspect of the present invention is that due to the difference in transmission rate, the data is generated at a rate corresponding to the transmission rate of the transit interface to reduce the possibility of start-stop processes, that is, to prevent a memory buffer full. Other aspect of the present invention is that the data generated rate is changed by means of adjusting the system clock.
- Referring to
FIG. 1 , in one embodiment, a schematic block diagram of ascanning system 100 is shown. Thescanning system 100 comprises aclock generator 110, afrequency multiplier 120, ascanning module 130, adata memory buffer 140, and a plurality oftransit interfaces 150 such astransit interfaces 150 a, 150 b, and 150 c. Thescanning module 130 including adetector 160, an analog to digital converter (ADC) 170, and animage processor 180, is for scanning an original to generate image data at a rate controlled by a system clock. Thetransit interface 150 is for the data communication from a data generator to a host device, in the embodiment, from thescanning system 100 to a computer. The transit interface can be any commercial products with any communication protocols and transmission rates such as USB1.1, USB2.0, IEEE1394, EPP, and SCSI and not limited to those. Theclock generator 110 can be a crystal oscillator, which produces a constant frequency (F). Thefrequency multiplier 120 can be a phase lock loop circuit, which multiplies the constant frequency (F) by a multiplier (M) to adjust the system clock according to thetransit interface 150, thus the image data is generated at a rate preventing thememory buffer 140 full. In short, the combination of theclock generator 110 and thefrequency multiplier 120 is a system clock generator, which generates corresponding system clocks according to the transit interface or the transmission rate of the transit interface. Therefore, thescanning system 130 is operated at a multiplied frequency (F times M) for generating data controlled by the system clock. - Additionally, the frequency of the system clock can be determined by multiplying the frequency (F) generated by the
clock generator 110 by one multiplier selected from a plurality of built-in multipliers according to the transmission rate. In other words, every transit interface has a corresponding frequency of the system clock built in the scanning system. When the transit interface is determined, thescanning module 130 is operated at the corresponding frequency of the system clock to generate the image data. For example, if the transit interface is USB1.1 and IEEE 1394, the frequency of the system clock is the frequency (F) times 2 and 3, respectively, wherein 2 and 3 are selected from the plurality of built-in multipliers. That is, the frequency of the system clock for USB1.1 and IEEE1394 are 2F and 3F, respectively. Thus, the possibility of the memory buffer full is reduced and the start-stop process is diminished resulting in the optimization of the scanning speed. - In accordance with the present invention, a method for adjusting a system clock according to the transit interface is also provided, which promotes the scanning speed. Referring to
FIG. 2A , a flow chart of implementing the present invention by the scanning system is illustrated. The method starts fromstep 210, the transit interface used in the scanning process is determined such as the transit interface 150 a is implemented. It is noted that when the transit interface is determined, the transmission rate can also be determined. For example the transit interface can be a USB 2.0 with a transmission rate of 480 Mbit/sec or running at a rate of 12 Mbit/sec, or a USB1.1 with a transmission rate of 12 Mbit/sec. The transmission rate of the transit interface can be determined by a signal sent to the scanning system in the process of initializing the scanning system or by a firmware prior to starting a scanning operation. - In the step of 220, a system clock is determined according to the transit interface. That is, the scanning module is operated at a frequency to generate data at a rate that prevents the memory buffer full. The frequency of the system clock can be determined by multiplying the frequency (F) of a clock generator by a multiplier responsive to the transmission rate of the transit interface. For example, the USB transit interface can have three transmission rates, high-speed of 480 Mbit/sec, full-speed of 12 Mbit/sec, and low-speed which is seldom used for data transfer. The frequency of the system clock (or the multiplier) is determined when the transmission rate is determined. If the transit interface has a high transmission rate such as IEEE 1394, EPP, and SCSI, the data is generated at highest frequency a system clock can produce due to the transmission rate is greatly faster than the data generated rate in the present technology. When the transit interface has a low transmission rate such as USB1.1, the data is generated at lower frequency a system clock can produces to prevent the memory buffer full. As depicted in
step 230, the original is scanned to generate the data at a rate controlled by the system clock. - Additionally,
FIG. 2B shows a flow diagram of promoting the scanning speed in accordance with another embodiment. The method starts from the same step of 210, the transit interface used in the scanning process is determined such as the transit interface 150 a is implemented. In the step of 240, decision of adjusting the system clock is made. The system clock is adjusted according to the result of comparing the transmission rate of the transit interface 150 a with a predetermined transmission rate. When the transmission rate of the transit is different from a predetermined value, the system clock is adjusted in the step of 250. In more details, when the transmission rate of the transit interface is faster than the predetermined transmission rate, the system clock is increased to increase the data generated rate. On the other hand, if the transmission rate of the transit interface is lower than the predetermined transmission rate, the system clock is adjusted to reduce the data generated rate. Then, in the step of 260, the scanning of an original is started to generate data at a rate controlled by the system clock. - For example, in accordance with the present invention, in the scanning procedure, the transmission rate of a
transit interface 150 such as USB 1.1 is first determined. When anoptical detector 160 such as charge coupled device (CCD) generates analog image data in the scanning of the original, the analog to digital converter (ADC) 170 is for converting the analog image data to digital data. Then, theimage processor 180 of thescanning module 130 generates the image data under the control of the system clock with a corresponding frequency (such as 2F in the example) produced by thefrequency multiplier 120 such as phase lock loop circuit, which is the frequency (F) generated by theclock generator 110 times a multiplier such as 2. Therefore, the data generated rate is changed to a rate preventing thememory buffer 140 full leading to the reduction in the time wasting on the start-stop process. Thus, the scanning speed is promoted without the requirement of increasing the memory buffer. - Although specific embodiments have been illustrated and described, it will be obvious to those skilled in the art that various modifications may be made without departing from what is intended to be limited solely by the appended claims.
Claims (24)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US11/502,063 US20060268355A1 (en) | 2001-12-11 | 2006-08-09 | Method and system for promoting scanning speed |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/011,711 US7420715B2 (en) | 2001-12-11 | 2001-12-11 | Method and system for promoting scanning speed |
US11/502,063 US20060268355A1 (en) | 2001-12-11 | 2006-08-09 | Method and system for promoting scanning speed |
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US20070070435A1 (en) * | 2001-11-01 | 2007-03-29 | Kuo-Jeng Wang | Method and system for increasing scanning speed |
US20080180765A1 (en) * | 2007-01-31 | 2008-07-31 | Canon Kabushiki Kaisha | Image processing method and apparatus |
US20110181918A1 (en) * | 2010-01-28 | 2011-07-28 | Seiko Epson Corporation | Optical Reading Device, Control Method for an Optical Reading Device, and Program |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7420715B2 (en) * | 2001-12-11 | 2008-09-02 | Transpacific Ip, Ltd. | Method and system for promoting scanning speed |
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US20050195183A1 (en) * | 2004-03-03 | 2005-09-08 | Anderson Michael H. | Clock control for a graphics processor |
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Citations (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4166280A (en) * | 1977-11-04 | 1979-08-28 | Ampex Corporation | High performance television color camera employing a camera tube and solid state sensors |
US4435732A (en) * | 1973-06-04 | 1984-03-06 | Hyatt Gilbert P | Electro-optical illumination control system |
US4680699A (en) * | 1983-05-13 | 1987-07-14 | Hitachi, Ltd. | Terminal control apparatus for parallel execution of data editing and data transmission/reception control |
US4739396A (en) * | 1970-12-28 | 1988-04-19 | Hyatt Gilbert P | Projection display system |
US4786933A (en) * | 1987-02-24 | 1988-11-22 | Konica Corporation | Focus detection apparatus for camera |
US4790442A (en) * | 1988-04-22 | 1988-12-13 | Sunbeam Plastics Corporation | Child resistant closure |
US5225914A (en) * | 1989-11-15 | 1993-07-06 | Ricoh Company, Ltd. | Image reading apparatus |
US5239393A (en) * | 1988-10-14 | 1993-08-24 | Canon Kabushiki Kaisha | Image reading apparatus |
US5371766A (en) * | 1992-11-20 | 1994-12-06 | International Business Machines Corporation | Clock extraction and data regeneration logic for multiple speed data communications systems |
US5434891A (en) * | 1991-05-31 | 1995-07-18 | U.S. Philips Corporation | Data transfer arrangement permitting variable rate data transfer between a modem and a synchronous terminal |
US5510894A (en) * | 1988-12-22 | 1996-04-23 | Renishaw Plc | Spectroscopic apparatus and methods |
US5579419A (en) * | 1992-05-19 | 1996-11-26 | Canon Kabushiki Kaisha | Image storing/retrieving apparatus using a mark sheet to enable user selection of images |
US5656158A (en) * | 1995-03-13 | 1997-08-12 | The Dow Chemical Company | Process for the preparation of cellulose based chiral separation liquid chromatography stationary phase |
US5689333A (en) * | 1988-12-22 | 1997-11-18 | Renishaw Plc | Spectroscopic apparatus and methods |
US5760727A (en) * | 1996-08-26 | 1998-06-02 | Primax Electronics Ltd. | Method for synchronizing scanning speed and data transmission speed of a scanner |
US5835138A (en) * | 1995-08-30 | 1998-11-10 | Sony Corporation | Image signal processing apparatus and recording/reproducing apparatus |
US5943139A (en) * | 1996-07-16 | 1999-08-24 | Acer Peripherals, Inc. | Method for adjusting scanning speed of a scanner |
US5956158A (en) * | 1997-04-01 | 1999-09-21 | Storm Technology, Inc. | Scanner powered by peripheral bus |
US6009529A (en) * | 1997-04-14 | 1999-12-28 | Samsung Electronics Co., Ltd. | Method of realizing DPMS function of display device using USB |
US6021129A (en) * | 1999-03-08 | 2000-02-01 | Efficient Networks, Inc. | System and method for communicating information from a communications link to a host using a universal serial bus |
US6046827A (en) * | 1995-05-26 | 2000-04-04 | Minolta Co., Ltd. | Film image reading system |
US6069707A (en) * | 1996-09-20 | 2000-05-30 | Pekelman; Gil | System for reproducing a physical color image |
US6100924A (en) * | 1996-02-21 | 2000-08-08 | Pakon, Inc. | Film scanner |
US6285398B1 (en) * | 1997-11-17 | 2001-09-04 | Sony Corporation | Charge-coupled device video camera with raw data format output and software implemented camera signal processing |
US20020003167A1 (en) * | 2000-07-04 | 2002-01-10 | Dyna Data System Corporation | Mobile optical scanning device |
US6366589B1 (en) * | 1998-04-27 | 2002-04-02 | 3Com Corporation | Multiple parallel asymmetric interfaces with reversed asymmetric links |
US20020039139A1 (en) * | 1999-06-30 | 2002-04-04 | Logitech Europe S.A. | Video camera with major functions implemented in host software |
US20020065966A1 (en) * | 1998-01-07 | 2002-05-30 | National Semiconductor Corporation | Apparatus and method of transmitting and receiving USB isochronous data |
US6459506B1 (en) * | 1998-09-16 | 2002-10-01 | Syscan, Inc. | Lightweight dual-mode mobile scanner powered from a universal serial bus port |
US6462842B1 (en) * | 1998-10-06 | 2002-10-08 | National Semiconductor Corporation | Apparatus, method, and computer program for increasing scanner data throughput |
US20020156941A1 (en) * | 2001-04-18 | 2002-10-24 | David Boll | Scanner having passthrough input control |
US20030025949A1 (en) * | 2001-07-31 | 2003-02-06 | Kuo-Jeng Wang | Scanning speed control device and method |
US20030081143A1 (en) * | 2001-11-01 | 2003-05-01 | Umax Data Systems Inc. | Method and system for increasing scanning speed |
US6580457B1 (en) * | 1998-11-03 | 2003-06-17 | Eastman Kodak Company | Digital camera incorporating high frame rate mode |
US6618085B2 (en) * | 1996-11-27 | 2003-09-09 | Sanyo Electric Co., Ltd. | Image pickup apparatus for controlling the discharge of information charges in the image pickup apparatus |
US6648226B2 (en) * | 2000-09-05 | 2003-11-18 | Canon Kabushiki Kaisha | Image reading apparatus and method |
US6747764B1 (en) * | 2000-11-21 | 2004-06-08 | Winbond Electronics Corp. | High speed scanner |
US6768557B1 (en) * | 1999-02-08 | 2004-07-27 | Seiko Epson Corporation | Interface device, control method for the same, and data storage medium for recording the control method |
US7006260B2 (en) * | 2000-11-07 | 2006-02-28 | Canon Kabushiki Kaisha | Image sensing apparatus, information processing apparatus, and method of controlling image sensing apparatus |
US7009721B1 (en) * | 1999-03-05 | 2006-03-07 | Murata Kikai Kabushiki Kaisha | Communication terminal device |
US7420715B2 (en) * | 2001-12-11 | 2008-09-02 | Transpacific Ip, Ltd. | Method and system for promoting scanning speed |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6529287B1 (en) * | 1996-01-31 | 2003-03-04 | Avision Inc. | Image processing system |
JPH1141385A (en) * | 1997-07-22 | 1999-02-12 | Minolta Co Ltd | Image forming device |
US6344906B1 (en) * | 1997-09-16 | 2002-02-05 | Cyberscan Technology, Inc. | Universal document scanner controller |
DE19819291A1 (en) * | 1998-04-30 | 1999-11-11 | Emitec Emissionstechnologie | Fuel cell module |
US6781711B1 (en) * | 2000-05-15 | 2004-08-24 | International Business Machines Corporation | Method and system for efficient transmittal and presentation of complex images |
-
2001
- 2001-12-11 US US10/011,711 patent/US7420715B2/en not_active Expired - Fee Related
-
2006
- 2006-08-09 US US11/502,063 patent/US20060268355A1/en not_active Abandoned
Patent Citations (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4739396A (en) * | 1970-12-28 | 1988-04-19 | Hyatt Gilbert P | Projection display system |
US4739396C1 (en) * | 1970-12-28 | 2002-07-09 | Gilbert P Hyatt | Projection display system |
US4435732A (en) * | 1973-06-04 | 1984-03-06 | Hyatt Gilbert P | Electro-optical illumination control system |
US4166280A (en) * | 1977-11-04 | 1979-08-28 | Ampex Corporation | High performance television color camera employing a camera tube and solid state sensors |
US4680699A (en) * | 1983-05-13 | 1987-07-14 | Hitachi, Ltd. | Terminal control apparatus for parallel execution of data editing and data transmission/reception control |
US4786933A (en) * | 1987-02-24 | 1988-11-22 | Konica Corporation | Focus detection apparatus for camera |
US4790442A (en) * | 1988-04-22 | 1988-12-13 | Sunbeam Plastics Corporation | Child resistant closure |
US5239393A (en) * | 1988-10-14 | 1993-08-24 | Canon Kabushiki Kaisha | Image reading apparatus |
US5510894A (en) * | 1988-12-22 | 1996-04-23 | Renishaw Plc | Spectroscopic apparatus and methods |
US5689333A (en) * | 1988-12-22 | 1997-11-18 | Renishaw Plc | Spectroscopic apparatus and methods |
US5225914A (en) * | 1989-11-15 | 1993-07-06 | Ricoh Company, Ltd. | Image reading apparatus |
US5434891A (en) * | 1991-05-31 | 1995-07-18 | U.S. Philips Corporation | Data transfer arrangement permitting variable rate data transfer between a modem and a synchronous terminal |
US5579419A (en) * | 1992-05-19 | 1996-11-26 | Canon Kabushiki Kaisha | Image storing/retrieving apparatus using a mark sheet to enable user selection of images |
US5371766A (en) * | 1992-11-20 | 1994-12-06 | International Business Machines Corporation | Clock extraction and data regeneration logic for multiple speed data communications systems |
US5656158A (en) * | 1995-03-13 | 1997-08-12 | The Dow Chemical Company | Process for the preparation of cellulose based chiral separation liquid chromatography stationary phase |
US6046827A (en) * | 1995-05-26 | 2000-04-04 | Minolta Co., Ltd. | Film image reading system |
US5835138A (en) * | 1995-08-30 | 1998-11-10 | Sony Corporation | Image signal processing apparatus and recording/reproducing apparatus |
US6100924A (en) * | 1996-02-21 | 2000-08-08 | Pakon, Inc. | Film scanner |
US5943139A (en) * | 1996-07-16 | 1999-08-24 | Acer Peripherals, Inc. | Method for adjusting scanning speed of a scanner |
US5760727A (en) * | 1996-08-26 | 1998-06-02 | Primax Electronics Ltd. | Method for synchronizing scanning speed and data transmission speed of a scanner |
US6069707A (en) * | 1996-09-20 | 2000-05-30 | Pekelman; Gil | System for reproducing a physical color image |
US6618085B2 (en) * | 1996-11-27 | 2003-09-09 | Sanyo Electric Co., Ltd. | Image pickup apparatus for controlling the discharge of information charges in the image pickup apparatus |
US5956158A (en) * | 1997-04-01 | 1999-09-21 | Storm Technology, Inc. | Scanner powered by peripheral bus |
US6009529A (en) * | 1997-04-14 | 1999-12-28 | Samsung Electronics Co., Ltd. | Method of realizing DPMS function of display device using USB |
US6285398B1 (en) * | 1997-11-17 | 2001-09-04 | Sony Corporation | Charge-coupled device video camera with raw data format output and software implemented camera signal processing |
US20020065966A1 (en) * | 1998-01-07 | 2002-05-30 | National Semiconductor Corporation | Apparatus and method of transmitting and receiving USB isochronous data |
US6366589B1 (en) * | 1998-04-27 | 2002-04-02 | 3Com Corporation | Multiple parallel asymmetric interfaces with reversed asymmetric links |
US6459506B1 (en) * | 1998-09-16 | 2002-10-01 | Syscan, Inc. | Lightweight dual-mode mobile scanner powered from a universal serial bus port |
US6462842B1 (en) * | 1998-10-06 | 2002-10-08 | National Semiconductor Corporation | Apparatus, method, and computer program for increasing scanner data throughput |
US6580457B1 (en) * | 1998-11-03 | 2003-06-17 | Eastman Kodak Company | Digital camera incorporating high frame rate mode |
US6768557B1 (en) * | 1999-02-08 | 2004-07-27 | Seiko Epson Corporation | Interface device, control method for the same, and data storage medium for recording the control method |
US7009721B1 (en) * | 1999-03-05 | 2006-03-07 | Murata Kikai Kabushiki Kaisha | Communication terminal device |
US6021129A (en) * | 1999-03-08 | 2000-02-01 | Efficient Networks, Inc. | System and method for communicating information from a communications link to a host using a universal serial bus |
US20020039139A1 (en) * | 1999-06-30 | 2002-04-04 | Logitech Europe S.A. | Video camera with major functions implemented in host software |
US20020003167A1 (en) * | 2000-07-04 | 2002-01-10 | Dyna Data System Corporation | Mobile optical scanning device |
US6648226B2 (en) * | 2000-09-05 | 2003-11-18 | Canon Kabushiki Kaisha | Image reading apparatus and method |
US7006260B2 (en) * | 2000-11-07 | 2006-02-28 | Canon Kabushiki Kaisha | Image sensing apparatus, information processing apparatus, and method of controlling image sensing apparatus |
US6747764B1 (en) * | 2000-11-21 | 2004-06-08 | Winbond Electronics Corp. | High speed scanner |
US20020156941A1 (en) * | 2001-04-18 | 2002-10-24 | David Boll | Scanner having passthrough input control |
US20030025949A1 (en) * | 2001-07-31 | 2003-02-06 | Kuo-Jeng Wang | Scanning speed control device and method |
US20030081143A1 (en) * | 2001-11-01 | 2003-05-01 | Umax Data Systems Inc. | Method and system for increasing scanning speed |
US7202981B2 (en) * | 2001-11-01 | 2007-04-10 | Kuo-Jeng Wang | Method and system for increasing scanning speed |
US7420715B2 (en) * | 2001-12-11 | 2008-09-02 | Transpacific Ip, Ltd. | Method and system for promoting scanning speed |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20070070435A1 (en) * | 2001-11-01 | 2007-03-29 | Kuo-Jeng Wang | Method and system for increasing scanning speed |
US20080180765A1 (en) * | 2007-01-31 | 2008-07-31 | Canon Kabushiki Kaisha | Image processing method and apparatus |
US8284464B2 (en) * | 2007-01-31 | 2012-10-09 | Canon Kabushiki Kaisha | Image processing method and apparatus to scan on both sides of a document |
US20110181918A1 (en) * | 2010-01-28 | 2011-07-28 | Seiko Epson Corporation | Optical Reading Device, Control Method for an Optical Reading Device, and Program |
US8582181B2 (en) * | 2010-01-28 | 2013-11-12 | Seiko Epson Corporation | Optical reading device, control method for an optical reading device, and program |
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