CN100486324C - Apparatus and method for performing image processor arrangement according to broadcast signals - Google Patents
Apparatus and method for performing image processor arrangement according to broadcast signals Download PDFInfo
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- CN100486324C CN100486324C CNB2006101287540A CN200610128754A CN100486324C CN 100486324 C CN100486324 C CN 100486324C CN B2006101287540 A CNB2006101287540 A CN B2006101287540A CN 200610128754 A CN200610128754 A CN 200610128754A CN 100486324 C CN100486324 C CN 100486324C
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- H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
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Abstract
The present invention relates to an apparatus and method for performing image processor arrangement according to broadcast signals. The apparatus includes: a demultiplexing part separating and outputting the image signals from the broadcast signals input in the HD mode; an image signal processing part processing the image signal to use the given image quality set value on the image signal of the output by the demultiplexing part; a frequency range transforming part transforming the image signal output from the demultiplexing part into the information in the frequency range; an image state estimation part judging the original image state of the image signals in the HD mode based on the output of the frequency range transforming part; a control unit receiving the output result of the image state estimation part, and outputting the control signals to be process as the image signals suitable for the original image state; an image quality setting part setting the image quality set value in the image signal processing part into the image quality with different values based on the processing signals in the control unit. As mentioned above, for the input image signals of HD mode, the image quality set value can be used with selectivity in order to display the optimum image quality in the original image state, thereby, the optimum image can be displayed.
Description
Technical field
The invention relates in the Digital Television and carry out the device and method that image processing part is provided with according to the kind of broadcast singal.
Background technology
At present, the ionosphere wave digital television signal is play the advertisement of high-definition image (HD) airtime section or is the high-definition image mode with general standard image (SD) conversion of signals beyond the high definition airtime section, and then plays.At this moment, former broadcast source (source) is the picture signal of mode standard, but has been transformed to the high-definition image pattern, and therefore, Digital Television is identified as the high-definition image signal with the respective image signal, shows with the set point that is fit to the high-definition image signal.General Digital Television receives most of picture signal, and the display mode according to being provided with in picture signal that receives and the image display device provides image with multiple form.
Fig. 1 is the structural representation of Digital Television in the prior art.
As shown in Figure 1, the Digital Television as one of general broadcast receiving system in the prior art comprises: the tuner 110 of selecting broadcast singal; Will be by the broadcast singal of above-mentioned tuner 110 selections, i.e. the transport stream (Transport Stream) of multichannel decomposition is decomposed into audio frequency, the multichannel decomposition portion 120 of image and additional information; To be treated to the picture signal handling part 130 that is fit to the picture signal that display part 140 shows by the picture signal that above-mentioned multichannel decomposition portion 120 separates; The Audio Signal Processing that to separate by above-mentioned multichannel decomposition portion 120 is the Audio Signal Processing portion 131 of the audio signal that is fit to loud speaker 141 outputs; The driver of storage Digital Television, and the setting that digital TV image is handled are promptly as the storage part 160 of user's set points such as image quality set information; According to the user control command of input part (not shown) input, the control part 150 of the work of control figure TV.Digital Television with said structure is described as follows the course of work that image is presented in the display part 140.At first, the broadcast singal that receives by antenna, the channel information of setting according to the user, selected and input to multichannel decomposition portion 120 by tuner 110.The broadcast singal that above-mentioned multichannel decomposition portion 120 will select by above-mentioned tuner 110, promptly the multichannel transport stream (TransportStream) of decomposing is separated into audio frequency, image and additional information and output.
Picture signal in the signal that picture signal handling part 130 will separate by above-mentioned multichannel decomposition portion 120 is treated to and is fit to the signal that display part 140 shows, and output.At this moment, image quality configuration part 170 is in order to show optimized image in above-mentioned display part 140, receive the control information of the pre-image model that shows from control part 150, utilize the user to set and be stored in image quality set point in the storage part 160, set the image quality set point of picture signal handling part 130.According to the above-mentioned image quality set point of having set, above-mentioned picture signal handling part 130 is handled the picture signal of input, output then, when if broadcast singal is HD pattern 1080i, with best image quality state and the output of signal processing for being fit to the HD pattern, if broadcast singal is the SD pattern, then with best image quality state and the output of signal processing for being fit to the SD pattern.When designing Digital Television originally, be set at different values with handling above-mentioned high definition broadcast singal separately with the picture signal handling part 130 image quality set points of standard broadcasting signal, and make it be suitable for each source (source).But, aforesaid Digital Television of the prior art, when its input signal is Digital Television HD pattern 1080i, even its original image signal is the SD signal, and be transformed to the HD pattern by TV station, the picture signal of Bo Chuing is also used the image quality set point that is fit to the HD pattern then, and image is handled.As mentioned above, the signal of not distinguishing input is the high-definition image signal originally, still for broadcast video standard signal is converted to the picture signal of HD pattern, all be treated to the high-definition image signal mode, therefore, for the picture signal that video standard signal is converted to the HD pattern being used optimum setting value, therefore can't show best original image signal for broadcast.
Summary of the invention:
In view of this, in order to address the above problem, the object of the present invention is to provide, judgement is with the original image state of the broadcast singal of HD pattern input, in order to show best image quality according to the original image state, selectivity is used image processing part image quality set point, guarantees to show and carries out the device and method that image processing part is provided with according to the kind of broadcast singal by optimized image.
The present invention also aims to provides, judgement is with the original image state of the broadcast singal of HD pattern input, according to the original image state, selectivity is used the image processing part image quality set point that is fit to each resolution, guarantee to show and carry out the device and method that image processing part is provided with according to the kind of broadcast singal by optimized image.
To achieve these goals, the present invention takes following technical scheme to realize:
Carry out the device that image processing part is provided with according to the kind of broadcast singal, comprise with the lower part:
(1) from multichannel decomposition portion with separate picture signal the broadcast singal of high-definition image pattern input and output;
(2), use the image quality set point of setting according to image model to carry out the picture signal handling part that picture signal is handled to the picture signal of above-mentioned multichannel decomposition portion output;
(3) image signal transformation with the output of above-mentioned multichannel decomposition portion is the frequency range transformation component of the signal of frequency range;
(4) according to the output of said frequencies range conversion portion, from output signal, detect basic frequency, and the basic frequency that detects compared with predefined regulation critical value, judge the image state judging part of the original image state of high-definition image mode image signal according to comparative result;
(5) the output result of the above-mentioned image state judging part of reception, the output control signal makes it be treated to the control part of the picture signal that is fit to the original image state;
(6), the image quality set point of above-mentioned picture signal handling part is set at separately the image quality configuration part of different value by the original image state according to the control signal of above-mentioned control part.
Aforesaid kind according to broadcast singal is carried out the device that image processing part is provided with, and it is characterized in that said frequencies range conversion portion, is with the picture signal with function of time input, is converted to the Fourier transform portion of frequency range signal with Fourier transform.
Aforesaid kind according to broadcast singal is carried out the device that image processing part is provided with, and it is characterized in that above-mentioned Fourier transform portion carries out fast Fourier transform (Fast Fourier Transform:FFT).
Aforesaid kind according to broadcast singal is carried out the device that image processing part is provided with, and it is characterized in that said frequencies range conversion portion, is with the picture signal with function of time input, is converted to the Laplace transform portion of frequency range signal with Laplace transform.
Carry out the method that image processing part is provided with according to the kind of broadcast singal, comprise with the next stage:
(1) the high-definition image mode image signal transformation with demultiplexer output is the stage of frequency range signal;
(2) from the above-mentioned picture signal that is transformed to the frequency range signal, detect stage of basic frequency;
(3) the above-mentioned basic frequency that detects is compared with predefined regulation critical value, according to its selectivity stage of using the image quality set point of picture signal handling part as a result.
Aforesaid kind according to broadcast singal is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned is that above-mentioned conversion utilizes Fourier transform in the stage of frequency range signal with signal transformation.
Aforesaid kind according to broadcast singal is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned Fourier transform utilizes fast Fourier transform.
Aforesaid kind according to broadcast singal is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned is that above-mentioned conversion utilizes Laplace transform in the stage of frequency range signal with signal transformation.
Aforesaid kind according to broadcast singal is carried out the method that image processing part is provided with, and it is characterized in that the critical value of afore mentioned rules is the value between 6Mhz to 16Mhz in the above-mentioned basic frequency that detects and stage that predefined regulation critical value is compared.
Aforesaid kind according to broadcast singal is carried out the method that image processing part is provided with, and it is characterized in that the critical value of afore mentioned rules is 10Mhz in the above-mentioned basic frequency that detects and stage that predefined regulation critical value is compared.
Among aforesaid the present invention, carry out the device and method that image processing part is provided with according to the kind of broadcast singal, judgement is with the original image state of the broadcast singal of HD pattern input, in order to show the best image quality of original image state, selectivity is used the image quality set point of image processing part, and the optimized image service is provided.
Beneficial effect of the present invention: among the present invention, carry out according to the kind of broadcast singal in the device and method of image processing part setting, judge original image state of the digital broadcast signal of input, for showing the best image quality of original image state, selectivity is used image processing part image quality set point, therefore can show optimized image.
In addition in the present invention, judge original image state of the digital broadcast signal of input, for show the best image quality of each resolution according to the original image state, selectivity is used image processing part image quality set point, therefore can show optimized image.
Description of drawings:
Fig. 1 is the structural representation of Digital Television in the prior art.
Fig. 2 uses the Digital Television schematic diagram that carries out the device of image processing part setting according to the kind of signal among the present invention.
Fig. 3 carries out the method flow diagram that image processing part is provided with according to the kind of broadcast singal among the present invention.
The wherein symbolic representation of major part in the diagram:
110: tuner 120: multichannel decomposition portion
130: picture signal handling part 131: Audio Signal Processing portion
140: display part 141: loud speaker
150,250: control part 160: storage part
170: image quality configuration part 251: the frequency range transformation component
252: the image state judging part
Embodiment:
Below, lift preferred embodiment, and conjunction with figs. describes in detail, and to carry out the device and method that image processing part is provided with according to the kind of broadcast singal as follows.
Fig. 2 uses the Digital Television schematic diagram that carries out the device of image processing part setting according to the kind of signal among the present invention, Fig. 3 carries out the method flow diagram that image processing part is provided with according to the kind of broadcast singal among the present invention.
As shown in Figure 2, use the Digital Television of carrying out the device of image processing part setting according to the kind of signal among the present invention, comprise: tuner 110, multichannel decomposition portion 120, picture signal handling part 130, Audio Signal Processing portion 131, display part 140, loud speaker 141, frequency range transformation component 251, image state judging part 252, control part 250, image quality configuration part 170, storage part 160 etc.
The channel information that above-mentioned tuner 110 is set according to the user is selected the broadcast singal and the output of selected channel.
The broadcast singal that above-mentioned multichannel decomposition portion 120 will select by above-mentioned tuner 110, promptly the multichannel transport stream (Transport Stream) of decomposing is separated into audio frequency, image and additional information and output.
Above-mentioned picture signal handling part 130 uses the set point of setting according to image model with the HD mode image signal of above-mentioned multichannel decomposition portion 120 outputs, is treated to the picture signal that is suitable for display unit and is sent to display part 140.
131 pairs in above-mentioned Audio Signal Processing portion handles by the audio signal that above-mentioned multichannel decomposition portion 120 separates, and makes it be fit to transmit by loud speaker 141.
The driver of above-mentioned storage part 160 storage Digital Television reaches the setting that digital TV image is handled, promptly as user's set points such as image quality set informations.
Said frequencies range conversion portion 251 is frequency range signal and output with the HD mode image signal transformation of above-mentioned multichannel decomposition portion 120 outputs.Said frequencies range conversion portion 251 is with the picture signal with function of time input, is converted to the Fourier transform portion of frequency range signal with Fourier transform; Or be converted to the Laplace transform portion of frequency range signal with Laplace transform, if form, then carry out fast Fourier transform (Fast Fourier Transform:FFT) and be converted to the frequency range signal by Fourier transform portion.
Above-mentioned image state judging part 252 judges that according to the output content of said frequencies range conversion portion 251 picture signal with the input of HD pattern is original HD mode image signal; Still SD mode image signal for broadcast is converted into the signal of HD pattern, is promptly judged its original image state.
Above-mentioned image state judging part 252 is in order to judge the original image state of the broadcast singal that receives with the HD pattern, and detects the basic frequency of video frequency scope, and judges original image state according to basic frequency.This moment be can utilize original image state for HD pattern or SD pattern the time, and the basic frequency in the frequency range is different and realize.
Above-mentioned control part 250 is according to the user control command by input part (not shown) input, the work of control figure TV. simultaneously, receive original image status information of above-mentioned image state judging part 252 outputs, and, its picture signal that is fit to original image state is handled to image quality configuration part 170 output control signals.
Above-mentioned image quality configuration part 170 control signals according to above-mentioned control part 250, the image quality set point that makes above-mentioned picture signal handling part 130 are according to original image state and all inequality separately.For this reason, read the picture signal of original image state from above-mentioned storage part 160 and handle the image quality set information, set the image quality set point of picture signal handling part 130 according to this image quality set information.
Have said structure, carry out the device that image processing part is provided with according to the kind of broadcast singal among the present invention, according to original signal condition of the picture signal of input, the method for carrying out the setting of digital TV image handling part is described as follows.
With reference to figure 3, at first, Digital Television is started working, then tuner 110 is selected the broadcast singal of selected channel and is sent to multichannel decomposition portion 120 from the broadcast singal that receives by antenna, above-mentioned multichannel decomposition portion 120 will be separated into audio frequency by the broadcast singal that above-mentioned tuner 110 is selected, and image and additional information are also exported S310.
Then, picture signal handling part 130 is with the picture signal of above-mentioned multichannel decomposition portion 120 outputs, the image quality set point that use is set according to image model, be treated to the picture signal that is fit to display unit and be sent to display part 140, and, corresponding to image kind and original image state of input, the control signal according to 170 outputs of image quality configuration part is set at different set points.
For this reason, frequency range transformation component 251 is the frequency range signal and exports S320 the HD mode image signal transformation of above-mentioned multichannel decomposition portion 120 outputs.Promptly, said frequencies range conversion portion 251 is by will be with the HD mode image signal of function of time input, the Fourier transform portion or the Laplace transform portion that are converted to the frequency range signal with Fourier transform form, if form, then carry out fast Fourier transform (Fast Fourier Transform:FFT) and be converted to the frequency range signal by Fourier transform portion.
As mentioned above, picture signal is converted to the frequency range signal and exports S320 with Fourier transform, then image state judging part 252 is exported from said frequencies range conversion portion 251, is shown as in the picture signal of frequency range signal and detects basic frequency S330.Then, the basic frequency that detects is compared with the set point (critical value) of regulation, judge that the original image signal of the broadcast singal that receives is HD pattern or SD Mode S 340.That is, detect the basic frequency in the video frequency scope, judge that according to the basic frequency that detects this can utilize original state to be the HD pattern characteristics different with the basic frequency of SD mode with original image state of the picture signal of HD pattern input.That is, original image state is the SD pattern, but the picture signal that above-mentioned SD mode image is converted to the HD pattern and broadcasts for broadcasting is carried out Fourier transform or Laplace transform to it, detects basic frequency then, and its result is generally below the 6Mhz.Again, original image state is the picture signal of HD pattern, and it is carried out Fourier transform, detects basic frequency, and its result is generally more than the 16Mhz.On the one hand, when using Fourier transform,, should use fast Fourier transform in order to improve processing speed.
As one of embodiment, above-mentioned image state judging part 252 is considered as benchmark critical value and storage with 10Mhz, then, the basic frequency that judgement detects from said frequencies range conversion portion 251 output valves belongs to than high scope of fiducial value 10Mhz or low scope, judges the original image state of input picture with this.
Therefore, the basic frequency that detects belongs to the scope higher than fiducial value 10Mhz, judges that then the original image state is the HD pattern, and the basic frequency that detects belongs to the scope lower than fiducial value 10Mhz, judges that then the original image state is the SD pattern, and the output judged result.Then, according to above-mentioned judged result S340, image quality configuration part 170 selectivity are used the image quality set point S350 that is stored in the picture signal handling part 130 in the storage part 160.Promptly, above-mentioned judged result S340 is if the original image state is the SD pattern, then image quality configuration part 170 uses the image quality set point of SD picture signal to set picture signal handling part 130, S351, above-mentioned judged result S340 is if the original image state is the HD pattern, and then above-mentioned image quality configuration part 170 uses the image quality set point of HD picture signal to set picture signal handling part 130, S351.
According to said process, the picture signal processing is carried out in use, the image quality set point of picture signal handling part 130 is set, then picture signal handling part 130 is handled the picture signal of input according to the image quality set point of having set, and the image of handling is presented in the display part, reach among the present invention with this, show the purpose of optimized image S360 according to the original image of the broadcast singal of importing with the HD pattern.
The present invention about the device and method that carries out image processing part according to the kind of broadcast singal and be provided with preferred embodiment openly as above; right its is not in order to limit the present invention; any those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can carry out various changes and modification, so protection scope of the present invention is as the criterion when looking the claim restricted portion that is proposed.
Claims (10)
1, carry out the device that image processing part is provided with according to the kind of broadcast singal, comprise with the lower part:
(1) from multichannel decomposition portion with separate picture signal the broadcast singal of high-definition image pattern input and output;
(2), use the image quality set point of setting according to image model to carry out the picture signal handling part that picture signal is handled to the picture signal of above-mentioned multichannel decomposition portion output;
(3) image signal transformation with the output of above-mentioned multichannel decomposition portion is the frequency range transformation component of the signal of frequency range;
(4) according to the output of said frequencies range conversion portion, from output signal, detect basic frequency, and the basic frequency that detects compared with predefined regulation critical value, judge the image state judging part of the original image state of high-definition image mode image signal according to comparative result;
(5) the output result of the above-mentioned image state judging part of reception, the output control signal makes it be treated to the control part of the picture signal that is fit to the original image state;
(6), the image quality set point of above-mentioned picture signal handling part is set at separately the image quality configuration part of different value by the original image state according to the control signal of above-mentioned control part.
2, the kind according to broadcast singal according to claim 1 is carried out the device that image processing part is provided with, it is characterized in that said frequencies range conversion portion, be to be converted to the Fourier transform portion of frequency range signal with Fourier transform with the picture signal of function of time input.
3, the kind according to broadcast singal according to claim 2 is carried out the device that image processing part is provided with, and it is characterized in that above-mentioned Fourier transform portion carries out fast Fourier transform.
4, the kind according to broadcast singal according to claim 1 is carried out the device that image processing part is provided with, it is characterized in that said frequencies range conversion portion, be to be converted to the Laplace transform portion of frequency range signal with Laplace transform with the picture signal of function of time input.
5, carry out the method that image processing part is provided with according to the kind of broadcast singal, comprise with the next stage:
(1) the high-definition image mode image signal transformation with demultiplexer output is the stage of frequency range signal;
(2) from the above-mentioned picture signal that is transformed to the frequency range signal, detect stage of basic frequency;
(3) the above-mentioned basic frequency that detects is compared with predefined regulation critical value, according to its selectivity stage of using the image quality set point of picture signal handling part as a result.
6, the kind according to broadcast singal according to claim 5 is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned is that above-mentioned conversion utilizes Fourier transform in the stage of frequency range signal with signal transformation.
7, the kind according to broadcast singal according to claim 6 is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned Fourier transform utilizes fast Fourier transform.
8, the kind according to broadcast singal according to claim 5 is carried out the method that image processing part is provided with, and it is characterized in that above-mentioned is that above-mentioned conversion utilizes Laplace transform in the stage of frequency range signal with signal transformation.
9, the kind according to broadcast singal according to claim 5 is carried out the method that image processing part is provided with, it is characterized in that the critical value of afore mentioned rules is the value between 6Mhz to 16Mhz in the above-mentioned basic frequency that detects and stage that predefined regulation critical value is compared.
10, the kind according to broadcast singal according to claim 5 is carried out the method that image processing part is provided with, and it is characterized in that the critical value of afore mentioned rules is 10Mhz in the above-mentioned basic frequency that detects and stage that predefined regulation critical value is compared.
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| KR10-2005-0115707 | 2005-11-30 | ||
| KR1020050115707 | 2005-11-30 | ||
| KR1020050115707A KR100759141B1 (en) | 2005-11-30 | 2005-11-30 | Apparatus and method for setting parameter of video avoiding sync detection error in display device |
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| CN1921603A CN1921603A (en) | 2007-02-28 |
| CN100486324C true CN100486324C (en) | 2009-05-06 |
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| KR101156117B1 (en) | 2007-08-02 | 2012-07-03 | 삼성전자주식회사 | Apparatus and method for detecting video |
| KR20210007393A (en) | 2019-07-11 | 2021-01-20 | 삼성전자주식회사 | Electronic device and control method thereof |
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Non-Patent Citations (2)
| Title |
|---|
| Statistical Analysis of Picture Quality for the Digital TelevisionBroadcasting. Y Nishida,E Nakasu,K Aoki,K Kanda,O Mizuno.International Broadcasting Convention. 1996 |
| Statistical Analysis of Picture Quality for the Digital TelevisionBroadcasting. Y Nishida,E Nakasu,K Aoki,K Kanda,O Mizuno.International Broadcasting Convention. 1996 * |
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| Publication number | Publication date |
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| KR100759141B1 (en) | 2007-09-14 |
| KR20070056713A (en) | 2007-06-04 |
| CN1921603A (en) | 2007-02-28 |
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