CN102098284A - Digital media adapter and conversion method - Google Patents

Digital media adapter and conversion method Download PDF

Info

Publication number
CN102098284A
CN102098284A CN2010105924046A CN201010592404A CN102098284A CN 102098284 A CN102098284 A CN 102098284A CN 2010105924046 A CN2010105924046 A CN 2010105924046A CN 201010592404 A CN201010592404 A CN 201010592404A CN 102098284 A CN102098284 A CN 102098284A
Authority
CN
China
Prior art keywords
signal
module
audio
conversion module
digital
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2010105924046A
Other languages
Chinese (zh)
Inventor
饶鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen D & S Industries Ltd
Original Assignee
Shenzhen D & S Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shenzhen D & S Industries Ltd filed Critical Shenzhen D & S Industries Ltd
Priority to CN2010105924046A priority Critical patent/CN102098284A/en
Publication of CN102098284A publication Critical patent/CN102098284A/en
Priority to PCT/CN2011/075838 priority patent/WO2012079353A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/60—Network streaming of media packets
    • H04L65/75—Media network packet handling
    • H04L65/765—Media network packet handling intermediate

Abstract

The embodiment of the invention discloses a digital media adapter and a conversion method, which are used for completing switching from a portable audio/video player to high-definition multimedia interface (HDMI) equipment. In method in the embodiment of the invention, a media activation module, an image conversion module, an audio conversion module, an output conversion module and a control module are provided, wherein the media activation module is used for transmitting an authentication command to a media terminal; the audio conversion module is used for converting an analogue audio signal into a digital audio signal; the image conversion module is used for converting an analogue image signal to a digital image signal; the output conversion module is used for uniformly converting the obtained digital audio signal and digital image signal into digital video signals and outputting the digital video signals; and the control module is used for transmitting a control command to the audio conversion module, the image conversion module and the output conversion module. Moreover, the invention also provides an implementation method of the digital media adapter.

Description

A kind of DMA and conversion method
Technical field
The present invention relates to electronic applications, relate in particular to a kind of DMA and conversion method;
Background technology
On market, portable audio player and video player (MP3 that just is commonly called as and MP4 player) be very popular all, the almost choosing of the indispensability of young man's amusement and leisure; And portable audio player and video player that apple APPLE company produces, still be that the angle of scientific and technological content is considered no matter from quality, outward appearance, all be the first-selection on the market, the global marketing of 2001-2008 APPLE audio frequency and video digital product reaches 200,000,000 multi-sections, occupies the very big market share.
HDMI (High Definition Multimedia Interface) (HDMI, High Definition Multimedia Interface) is that a kind of full digitisation image and sound transmit interface, can transmit audio signal and the vision signal of not having compression.The HDMI technology can be applicable to fields such as DVD player, PC, set-top box, numerical digit sound equipment and television set.HDMI can transmit the Voice ﹠ Video signal simultaneously, because the Voice ﹠ Video signal adopts same cable, has simplified the system configuration of playback equipment greatly.Along with science and technology development, it is more and more universal that the HDMI technology also becomes, and be subjected to pursuing energetically of various electronic products, and the market expansion of HDMI Related product has become a kind of trend.
In conjunction with the development of above-mentioned two kinds of technology, occurred a kind of like this user's request-on the market and be transferred on the HDMI equipment and play the Media Stream of APPLE audio frequency and video digital product.
In the prior art, because the APPLE digital product does not design the HDMI interface, play if need be transferred to the Media Stream of APPLE digital product on the HDMI equipment, need the various conversion accessories of collocation to transfer, process is very loaded down with trivial details.For example: the audio frequency and video assemble line (APPLE to AV cable) that needs to be equipped with the special use of APPLE digital product, RGB TO HDMI transducer and external power supply, the end of APPLEto AV cable is linked to each other with the APPLE digital product, the other end inserts the audio signal input end mouth and the video signal input terminal mouth of RGB TO HDMI transducer respectively, then at the HDMI output by RGB TO HDMI transducer to HDMI equipment output audio or vision signal.Because the switching process complexity has caused user's inconvenience.
Summary of the invention
The embodiment of the invention provides a kind of DMA and conversion method, is used for finishing easily the switching of portable audio video player to HDMI equipment.
DMA provided by the invention comprises: medium activated module, image conversion module, audio conversion module, output modular converter and control module; Described medium activated module is used for sending the authentication instruction to media termination, makes described media termination send simulated audio signal and analog picture signal to audio conversion module and image conversion module respectively; Described audio conversion module is used for obtaining the simulated audio signal that described media termination sends by medium activated module, and described simulated audio signal is converted to digital audio and video signals, and exports described digital audio and video signals to the output modular converter; Described image conversion module is used for obtaining the analog picture signal that described media termination sends by medium activated module, and described analog picture signal is converted to data image signal, and exports described data image signal to the output modular converter; Digital audio and video signals and data image signal unification that described output modular converter is used for getting access to convert digital video signal to, and export described digital video signal; Described control module is used for respectively to described audio conversion module, image conversion module and output modular converter sending controling instruction, control signal transformation flow.
Digital Media provided by the invention conversion method comprises: send the authentication instruction to media termination, make described media termination to send analog signal to DMA, described analog signal comprises simulated audio signal and analog picture signal; Obtain simulated audio signal and analog picture signal that media termination sends respectively; Described simulated audio signal and analog picture signal are converted to digital audio and video signals and data image signal respectively; Convert described digital audio and video signals and data image signal unification to digital video signal, and export described digital video signal.
As can be seen from the above technical solutions, the embodiment of the invention has the following advantages: medium activated module that DMA of the present invention is integrated, image conversion module, audio conversion module, output modular converter and control module, above-mentioned 5 modules all are welded on a pcb board, has only a data transmission interface between pcb board and the outer body shell, media termination can directly insert this data transmission interface and be connected with DMA of the present invention, then the process of media file conversion of signals just can integratedly be finished, and is very convenient and quick.
Description of drawings
Fig. 1 is a logical construction schematic diagram of DMA in the embodiment of the invention;
Fig. 2 is another logical construction schematic diagram of DMA in the embodiment of the invention;
Fig. 3 is the schematic diagram in kind of DMA in the embodiment of the invention;
Fig. 4 is a DMA and schematic diagram after media termination is connected in the embodiment of the invention;
Fig. 5 is schematic flow sheet of Digital Media conversion method in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of DMA and conversion method, is used for finishing easily the switching of portable audio video player to HDMI equipment.
See also Fig. 1, DMA embodiment comprises in the embodiment of the invention:
Medium activated module 101, audio conversion module 102, image conversion module 103, output modular converter 104 and control module 105;
Medium activated module 101 is used for sending an authentication instruction to media termination, makes this media termination send simulated audio signal and analog picture signal to audio conversion module 102 and image conversion module 103 respectively;
Audio conversion module 102 is used for obtaining the simulated audio signal that this media termination sends by medium activated module 101, and simulated audio signal is converted to digital audio and video signals, and to output modular converter 104 these digital audio and video signals of output;
Image conversion module 103 is used for obtaining the analog picture signal that this media termination sends by medium activated module 101, and analog picture signal is converted to data image signal, and to output modular converter 104 these data image signals of output;
Digital audio and video signals and data image signal unification that output modular converter 104 is used for getting access to convert digital video signal to, and export this digital video signal, this digital video signal can be transition minimized differential signaling (TMDS, Transition Minimized Differential Signaling);
Control module 105 is used for respectively to audio conversion module 102, image conversion module 103 and output modular converter 104 sending controling instructions, control module 105 is by the whole process of instruction and the conversion of clock circuit control signal, comprise: the speed of control transformation makes the conversion synchronization of Voice ﹠ Video; The buffer memory of control signal is adjusted buffer memory output; The beginning of control signal conversion and end etc.
The concrete reciprocal process in each unit of DMA is as follows in the embodiment of the invention:
After media termination inserts DMA, medium activated module 101 judge and media termination between whether conducting of circuit, if, then send an authentication instruction to media termination, open the medium output port of media termination, make media termination send simulated audio signal and analog picture signal to audio conversion module and image conversion module respectively.This authentication instruction is used to activate the central processing unit (CPU, Central Processing Unit) of media termination, as: if this media termination is the iphone mobile phone, then should the authentication instruction be annex test macro (ATS, Accessory Test System) instruction.
Because in the transmission of analog signal, the audio signal and the picture signal of media data are separated, therefore, after the medium output port of media termination is opened, control module 105 can be respectively to audio conversion module 102 and image conversion module 103 sending controling instructions, make audio conversion module 102 and image conversion module 103 obtain simulated audio signal and analog picture signal that media termination sends respectively, and to simulated audio signal and analog picture signal are converted to digital audio and video signals and data image signal.This analog picture signal can be RGB picture signal and composite video signal (YPbPr), and this data image signal can be the YUV digital signal.
When media termination during to audio conversion module 102 and image conversion module 103 transmission of analogue signal, control module 105 is obtained the information (as the size of entire media file) of this analog signal to medium activated module 101, trigger these two modules to audio conversion module 102 and image conversion module 103 sending controling instructions respectively and begin to carry out conversion of signals, and according to the indication of the size of media file: when finishing which frame signal conversion, the end signal conversion.The clock frequency of audio conversion module 102 and image conversion module 103 converting analogue signals also is by control module 105 decisions.
After the signal after audio conversion module 102 and image conversion module 103 conversions is input to output modular converter 104, output modular converter 104 is to control module 105 feedback current states, control module 105 is to the control command of output modular converter 104 transmission format conversion, and the broadcast code check and the resolution of modular converter 104 vision signals conversion is exported in indication.Because the present invention need be to HMDI equipment output medium signal, so export modular converter 104 before HMDI equipment output medium signal, unification is converted into the TMDS signal with digital audio and video signals and data image signal.
After output modular converter 104 converts digital video signal, then this digital video signal can be outputed in the HDMI equipment by the HDMI port and play.
Medium activated module that DMA of the present invention is integrated, image conversion module, audio conversion module, output modular converter and control module, after medium activated module has activated media termination, by the unified control of control module image conversion module, audio conversion module and output modular converter, make image conversion module and audio conversion module respectively analog picture signal and the simulated audio signal that gets access to is converted to data image signal and digital audio and video signals, export then modular converter again with data image signal and digital audio and video signals unified be converted to digital video signal, and export this digital video signal to HDMI equipment.After media termination directly inserted DMA of the present invention, the process of whole media conversion is integrated to be finished, very convenient and quick.
For the ease of understanding, with a specific embodiment DMA of the present invention is described in detail again below, please refer to Fig. 2, be specially:
DMA in the embodiment of the invention can also comprise:
Remote controller 201 and power supply output module 202;
Medium activated module 203 of the present invention can also outer connect the infrared signal receiver module, when remote controller by infrared signal during to medium activated module 203 transmit operations instruction, medium activated module 203 is operated accordingly according to this operational order; Remote controller of the present invention mainly is to trigger medium activated module 203 to send an authentication instruction to media termination, and controls the transmission of the audio and video analog signal of media termination indirectly.
Above-mentioned remote controller 201 can be that physical circuit is connected with the communications conduit of medium activated module 203, can transmit by infrared light, and also can be the transmitting-receiving channel of other electromagnetic wave signal, specifically do not limit herein.
Medium activated module 203 is a kind of integrated micro-control unit (MCU, Micro ControllerUnit), after medium activated module 203 has activated media termination, media termination is by the analog signal of this MCU to audio conversion module 204 and image conversion module 205 transmission medium files, can the external clock circuit on this MCU, chip external memory, be responsible for transmission and this analog signal of buffer memory between media termination and audio conversion module 204 or image conversion module 205; This MCU can also external reset circuit, when the transmission of analog signal makes a mistake, and can be automatically or passive reset.
After media termination was activated, power supply output module 202 to output current, was the media termination charging by the data connectivity port between media termination and the DMA of the present invention.Voltage output module 202 can comprise the voltage adaptation circuit, will be the rated current of this media termination to the Current Regulation of media termination output.
Control unit 207 also is a kind of MCU; The present invention can change the pattern that audio frequency and picture signal depend on 3 kinds of work periods simultaneously: 1, control cycle, be used for the transmission of guidance information, and simultaneously also synchronous with the character of signal output part; 2, video cycle is used to send the capable pixel of effective video; 3, cycle data is used for transmitting audio signal.Control unit 207 is finished the control procedure of these 3 kinds of work periods by sending controling instruction.
When media termination after audio conversion module 204 and image conversion module 205 transmission of analogue signal, control module 207 triggers these two modules to audio conversion module 204 and image conversion module 205 sending controling instructions respectively and begins to carry out conversion of signals.
Audio conversion module 204 can use pulse-code modulation (PCM, Pulse Code Modulation) method is quantified as digital audio and video signals with simulated audio signal, promptly allow the different amplitudes of simulated audio signal distinguish corresponding different binary numbers, for example adopt 8 codings simulated audio signal can be quantified as the individual magnitude of 256 (2 8 powers), often take 24 or 30 codings in the practicality.
Image conversion module 205 can be selected integrated chip AD9880 for use, and AD9880 can handle RGB image and these two kinds of analog picture signals of composite video (YPbPr), has the code rate of 150MSPS and the bandwidth of 330MHz.The inside of AD9880 is integrated all input signal buffer memorys, DC component is replied, biasing and gain adjusting circuit, pixel clock generative circuit and dateout form.Because AD9880 is built-in color space converting circuit can be imported the color space of arbitrary format, can export the color space of any form too; In embodiments of the present invention, AD9880 changes into Low Voltage Differential Signal (LVDS, Low-Voltage Differential Signaling) signal with the YPbPr analog signal earlier, by coding, the LVDS conversion of signals is become digital YUV signal again.
Control circuit among the AD9880 can be connected with control module 105 by the serial ports of 2-line.AD9880 has R, G, the B input channel of 6 high impedances.The analog signal voltage scope that adapts to is: 0.5-1.0V.Because the impedance of AD9880 input pin is 75 Europe, so when wiring, medium activated as far as possible module 101 is near connecting.In the configuration of real system, the impedance of each parts is mated as far as possible, so that obtain more performance in wideer signal bandwidth scope.
Digital audio and video signals that converts and YUV signal are input to output modular converter 206, and control unit 207 is exported modular converter 206 by the control command notice: the broadcast code check and the resolution of vision signal conversion.206 pairs of digital audio and video signals of modular converter and YUV signal unification are converted to needed TMDS signal, and modular converter 206 can be AD9889 model TMDS conversion of signals chip.
After output modular converter 206 is finished conversion of signals, just this TMDS signal can be outputed in the HDMI equipment by the HDMI port and play.
Above-mentioned medium activated module, audio conversion module, image conversion module, 5 modules such as output modular converter and control module can be welded on a printed circuit board (PCB) (PCB, Printed CircuitBoard) on, arrange power supply circuits and data transmission circuit again on this pcb board, the electronic structure configuration of the DMA in the embodiment of the invention is finished.Because each functional module height of DMA of the present invention is integrated, so the volume of DMA of the present invention is small and exquisite relatively, be easy to carry, as long as the place of HDMI equipment is arranged, just can carry out media conversion at any time with going up user's DMA of the present invention, improve user experience.
The main body cover of DMA adopts direct insertion understructure in the embodiment of the invention, concrete structure please refer to Fig. 3, and a thermovent is arranged at the bottom of this direct insertion base, and there are an outlet and HDMI port in the side of this direct insertion base, design is succinct, and is simple to operate.
Media termination (as: iphone mobile phone) can directly insert base of the present invention, please refer to Fig. 4, need not auxiliary data line and connects, very convenient.Even if may there be inappropriate situation in the size of media termination, the present invention also can be equipped with a switching data wire, this switching data wire and AVcable of the prior art are different, the interconnecting device end of AV cable divides audio frequency end and image end, and image end also may be divided into " R ", " G ", " B " three ends, the audio frequency end also may divide left and right acoustic channels, when wiring, bother very much, and the interconnecting device end of a switching data wire of the present invention socket of corresponding DMA of the present invention only is easy to connect.
Embodiment to the Digital Media conversion method of the above-mentioned DMA of correspondence describes below, please refer to Fig. 5, and the Digital Media conversion method embodiment comprises in the embodiment of the invention:
501, send the authentication instruction to media termination;
When media termination with after DMA of the present invention is connected, DMA sends an authentication instruction to media termination, open the medium output port of media termination, make media termination can send the analog signal of media file to DMA.
This authentication instruction is used to activate the CPU of media termination, makes media termination open the medium output port.If this media termination is the iphone mobile phone, then should the authentication instruction be the ATS instruction.
502, obtain analog signal respectively;
After the medium output port of media termination was opened, when media termination during at local playing media, the medium output port of media termination will be exported the analog signal of respective media.This analog signal comprises: simulated audio signal and analog picture signal.
Because in the transmission of analog signal, the audio signal and the picture signal of media data are separated, therefore, DMA obtains this simulated audio signal and analog picture signal respectively by two modules of inside.
503, carry out the conversion of digital signal respectively;
DMA carries out the conversion of digital signal to simulated audio signal and the analog picture signal that gets access to respectively, is converted to digital audio and video signals and data image signal respectively; This analog picture signal can be RGB picture signal and composite video signal (YPbPr), and this data image signal can be the YUV digital signal.
The transfer process of data image signal can by coding, become digital YUV signal with the LVDS conversion of signals again for earlier the YPbPr analog signal being changed into Low Voltage Differential Signal LVDS signal.
This analog signal revolution word signal can use pulse-code modulation (PCM, Pulse Code Modulation) method, analog signal is quantified as digital signal, promptly allow the different amplitudes of analog signal distinguish corresponding different binary numbers, for example adopt 8 codings analog signal can be quantified as the individual magnitude of 256 (2 8 powers), often take 24 or 30 codings in the practicality.
504, carry out the conversion of digital video signal;
After simulated audio signal and analog picture signal were converted into digital audio and video signals and data image signal respectively, DMA merged this digital audio and video signals and data image signal, the unified digital video signal that is converted to.This digital video signal can be the TMDS signal.
505, output digital video signal.
DMA will be changed good digital video signal and pass through the HDMI port to the HDMI device transmission.
Whole transfer process of the present invention is all controlled by instruction by the control unit of DMA, control unit is according to the Frame transmission of clock circuit monitoring Voice ﹠ Video signal and the situation of conversion, real-time buffer memory and transmission data, adjust the speed of conversion of signals, make from analog signal revolution word signal, audio frequency and picture signal to numeral are changeed vision signal, each work period to the output of digital video signal obtains coordinating the signal Synchronization of exporting with DMA when making HDMI device plays media data again.
Digital Media of the present invention conversion method send the authentication instruction to media termination before, the step that can also remote controller triggers:
The remote controller of DMA triggers the step that sends the authentication instruction to media termination to the medium activated module transmit operation instruction of DMA.The communications conduit of this remote controller transmit operation instruction can be that physical circuit connects, can transmit by infrared light, and also can be the transmitting-receiving channel of other electromagnetic wave signal, specifically do not limit herein.
Digital Media of the present invention conversion method at DMA after media termination sends the authentication instruction, but the power supply output module of triggered digital media filter charges to this media termination to this media termination output current.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to finish by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be a read-only memory, disk or CD etc.
More than a kind of DMA provided by the present invention and conversion method are described in detail, for one of ordinary skill in the art, thought according to the embodiment of the invention, part in specific embodiments and applications all can change, in sum, this description should not be construed as limitation of the present invention.

Claims (8)

1. a DMA is characterized in that, comprising:
Medium activated module, image conversion module, audio conversion module, output modular converter and control module;
Described medium activated module is used for sending the authentication instruction to media termination, makes described media termination send simulated audio signal and analog picture signal to audio conversion module and image conversion module respectively;
Described audio conversion module is used for obtaining the simulated audio signal that described media termination sends by medium activated module, and described simulated audio signal is converted to digital audio and video signals, and exports described digital audio and video signals to the output modular converter;
Described image conversion module is used for obtaining the analog picture signal that described media termination sends by medium activated module, and described analog picture signal is converted to data image signal, and exports described data image signal to the output modular converter;
Digital audio and video signals and data image signal unification that described output modular converter is used for getting access to convert digital video signal to, and export described digital video signal;
Described control module is used for respectively to described audio conversion module, image conversion module and output modular converter sending controling instruction, control signal transformation flow.
2. adapter according to claim 1 is characterized in that, described adapter also comprises:
The power supply output module is used for described media termination is charged.
3. adapter according to claim 1 and 2 is characterized in that, described adapter also comprises:
Remote controller is used for triggering medium activated module to medium activated module transmit operation instruction.
4. adapter according to claim 1 and 2 is characterized in that, described medium activated module, and image conversion module, audio conversion module, output modular converter and control module all are welded on the printing board PCB.
5. adapter according to claim 4 is characterized in that, described adapter also comprises:
Main body cover;
Described PCB is fixed within the main body cover;
Described main body cover is direct insertion base, and described media termination can directly insert described base, and is connected with described PCB.
6. a Digital Media conversion method is characterized in that, comprising:
Send the authentication instruction to media termination, make described media termination to send analog signal to DMA, described analog signal comprises simulated audio signal and analog picture signal;
Obtain simulated audio signal and analog picture signal that media termination sends respectively;
Described simulated audio signal and analog picture signal are converted to digital audio and video signals and data image signal respectively;
Convert described digital audio and video signals and data image signal unification to digital video signal, and export described digital video signal.
7. method according to claim 6 is characterized in that, describedly comprises after media termination sends the authentication instruction:
To described media termination output current, described media termination is charged.
8. according to claim 6 or 7 described methods, it is characterized in that described the instruction to media termination transmission authentication comprises before:
Medium activated module transmit operation instruction to DMA triggers the step that sends the authentication instruction to media termination.
CN2010105924046A 2010-12-16 2010-12-16 Digital media adapter and conversion method Pending CN102098284A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2010105924046A CN102098284A (en) 2010-12-16 2010-12-16 Digital media adapter and conversion method
PCT/CN2011/075838 WO2012079353A1 (en) 2010-12-16 2011-06-17 Digital media adapter and conversion method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105924046A CN102098284A (en) 2010-12-16 2010-12-16 Digital media adapter and conversion method

Publications (1)

Publication Number Publication Date
CN102098284A true CN102098284A (en) 2011-06-15

Family

ID=44131148

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105924046A Pending CN102098284A (en) 2010-12-16 2010-12-16 Digital media adapter and conversion method

Country Status (2)

Country Link
CN (1) CN102098284A (en)
WO (1) WO2012079353A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012079353A1 (en) * 2010-12-16 2012-06-21 深圳市和宏实业有限公司 Digital media adapter and conversion method
CN103324883A (en) * 2013-06-24 2013-09-25 腾讯科技（深圳）有限公司 Multimedia player terminal, authentication method, authentication system and server thereof
CN109803170A (en) * 2018-12-29 2019-05-24 深圳市通立威科技有限公司 Attachment device
CN111385524A (en) * 2018-12-27 2020-07-07 上海富瀚微电子股份有限公司 Method and system for realizing high-speed long-distance data transmission of analog high-definition camera

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040170159A1 (en) * 2003-02-28 2004-09-02 Kim Myong Gi Digital audio and/or video streaming system
CN201323607Y (en) * 2008-12-26 2009-10-07 中国移动通信集团公司 Adapter for extending functions of mobile terminal
CN201467377U (en) * 2009-06-08 2010-05-12 杭州赛安斯图像科技有限公司 High-definition digital video/audio decoding device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102098284A (en) * 2010-12-16 2011-06-15 深圳市和宏实业有限公司 Digital media adapter and conversion method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040170159A1 (en) * 2003-02-28 2004-09-02 Kim Myong Gi Digital audio and/or video streaming system
CN201323607Y (en) * 2008-12-26 2009-10-07 中国移动通信集团公司 Adapter for extending functions of mobile terminal
CN201467377U (en) * 2009-06-08 2010-05-12 杭州赛安斯图像科技有限公司 High-definition digital video/audio decoding device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012079353A1 (en) * 2010-12-16 2012-06-21 深圳市和宏实业有限公司 Digital media adapter and conversion method
CN103324883A (en) * 2013-06-24 2013-09-25 腾讯科技（深圳）有限公司 Multimedia player terminal, authentication method, authentication system and server thereof
CN111385524A (en) * 2018-12-27 2020-07-07 上海富瀚微电子股份有限公司 Method and system for realizing high-speed long-distance data transmission of analog high-definition camera
CN109803170A (en) * 2018-12-29 2019-05-24 深圳市通立威科技有限公司 Attachment device

Also Published As

Publication number Publication date
WO2012079353A1 (en) 2012-06-21

Similar Documents

Publication Publication Date Title
CN201491138U (en) Wireless high-definition transceiver and television with wireless receiving function
EP2439942B1 (en) Tv signal switching box and controlling method thereof
CN204316626U (en) HDMI audio frequency and video switching device shifter can be extended
CN209182811U (en) A kind of mobile terminal throwing screen device
CN102098284A (en) Digital media adapter and conversion method
CN102497609B (en) Wireless network sound system
CN108023235A (en) A kind of usb circuit, terminal, head circuit and earphone
CN202475500U (en) USB circuit for handset and the handset
CN201976211U (en) Digital media adapter
CN203457231U (en) Intelligent video signal switching device
CN204231580U (en) A kind of karaoke OK system and audio frequency integrating apparatus thereof
CN206849007U (en) A kind of Multifunctional concentrator
CN202634585U (en) Karaoke multisource high-definition multimedia interface (HDMI) adaptive device and system which are capable of being externally connected with universal serial bus (USB)
CN202282825U (en) MHL (Mobile High-Definition Link) data conversion system
CN201303418Y (en) Multifunctional wireless sound source player and wireless sound box system
CN113885826B (en) Integrated machine equipment and loudspeaker expansion method, device and system thereof
CN205378079U (en) Multifunction converter
CN203747907U (en) VGA signal and HDMI signal mutual conversion signal converter
CN209086911U (en) A kind of multi-functional mobile phone docking station
CN205123936U (en) Multi -functional family cloud amusement all -in -one
CN102201156A (en) Remote controller and related system
CN203180604U (en) Portable charging adapter
CN207995372U (en) The acoustics circuit and sound system of sharing audio input terminal
CN207504925U (en) A kind of mobile phone protective cover of tape relay interface
CN205812209U (en) Signal converting equipment and optical projection system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C53 Correction of patent of invention or patent application
CB02 Change of applicant information

Address after: 518026, 33 floor, Rong Chao economic and Trade Center, No. 4028 Jintian Road, Shenzhen, Guangdong, Futian District

Applicant after: SHENZHEN HEHONG INDUSTRIAL CO., LTD.

Address before: 518026, 33 floor, Rong Chao economic and Trade Center, No. 4028 Jintian Road, Shenzhen, Guangdong, Futian District

Applicant before: Shenzhen D & S Industries Limited

C53 Correction of patent of invention or patent application
CB02 Change of applicant information

Address after: 518040, Shenzhen, Guangdong, Futian District, Tian An Digital City, Tian An science and Technology Pioneer Park, block B, building 10

Applicant after: SHENZHEN HEHONG INDUSTRIAL CO., LTD.

Address before: 518026, 33 floor, Rong Chao economic and Trade Center, No. 4028 Jintian Road, Shenzhen, Guangdong, Futian District

Applicant before: SHENZHEN HEHONG INDUSTRIAL CO., LTD.

C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20110615