CN101039399A - System and method for recording television program - Google Patents

System and method for recording television program Download PDF

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Publication number
CN101039399A
CN101039399A CN 200610098935 CN200610098935A CN101039399A CN 101039399 A CN101039399 A CN 101039399A CN 200610098935 CN200610098935 CN 200610098935 CN 200610098935 A CN200610098935 A CN 200610098935A CN 101039399 A CN101039399 A CN 101039399A
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China
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audio
signal
video
unit
television
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CN 200610098935
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CN100583970C (en
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翟翌立
刘强
王中振
黄俊杰
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Haier Group Corp
Qingdao Haier Electronics Co Ltd
Qingdao Haier Multimedia Co Ltd
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Haier Group Corp
Qingdao Haier Electronics Co Ltd
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Priority to CN200610098935A priority Critical patent/CN100583970C/en
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Abstract

The present invention discloses an TV program recording system comprising an audio-video output unit and a recording unit, wherein, the audio-video output unit includes an audio-video sampling and treating unit, a commixing treating and coding unit, an USB interface and an I2C control unit; the USB interface is connected with the recording unit and is used for supplying power and transmitting signal to the audio-video output unit and a TV high frequency head during the waiting state or power-off state of a TV; the I2C control unit is used for controlling the normal output of TV signals of the TV high frequency head during the waiting state or power-off state of the TV. The recording unit comprises an USB interface and a memorizing unit. The present invention also discloses a TV program recording method. The present invention further provides a TV program recording system and method thereof, which realizes time-recording and power-off recording of the TV, and the recorded content can be processed as normal media files for use's facilitation.

Description

A kind of television program record system and method
Technical field
The present invention relates to a kind of recording system of TV programme, and a kind of TV program recording method.
Background technology
At present, along with the development of TV industry, content of TV program is more and more rich and varied, and the TV programme that can select and television content are also more and more.Make people when watching TV, can select corresponding program like this according to the personal like.But owing to be subjected to the restriction of program broadcasting time, people can't see the program that they like sometimes.Therefore, people just need a kind of video recording equipment, the television program record of liking are got off, in that the time is watched easily.
Have two kinds of recording arrangements at present, a kind of is traditional magnetic tape type video tape recorder, owing to the not reproducible utilization of tape and the unfavorable reason of image quality effect of program recording, progressively is eliminated.
Another kind is the digital video recording machine, the complete processing storage system of a built-in cover, but owing to cost an arm and a leg, also be difficult to use as home entertainment device.
Application number 200310117485.4, the Chinese patent application that name is called " a kind of method and system thereof that utilizes computer recording audio/video program " discloses a kind of method and system that are used for the recording audio/video program, this system comprises AV signal acquisition and processing apparatus and computer, the AV signal acquisition and processing apparatus is transferred to computer with the video recording instruction transformation that the user sends for the USB interface, after the video software response of computer-internal, control AV signal acquisition and processing apparatus acquired signal.The AV signal acquisition and processing apparatus with the audio-video signal flow transmission at the AV signal encoding of input, conversion USB interface to computer, computer with the file storage of audio-video signal stream translation, noise reduction, boil down to MPEG1 or the MPEG2 form received in computer.The disadvantage of said system is to realize timed recording, can only be at television startup state real-time recording program.
Above-mentioned prior art is applicable to recording of audio/video program content, can realize the real-time recording of TV programme.But there is following several respects deficiency in the method and system of above-mentioned recording audio/video program:
1, can't realize timed recording, just can not recorded program content at the scene the time as the user, can not satisfy the demand of user to timed recording.
2, can't program recording under off-mode, the user can only realize recording process at the television startup state.
3, can not become universal media files such as VCD to the television program designing that records, be inconvenient to preserve.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of recording system of TV programme, and the recording system of this TV programme has the function that the shutdown of timed recording and TV is recorded, and can become the universal media file to the content production of recording, and is user-friendly to; The present invention also provides a kind of method for recording of TV programme to record to realize the shutdown of real-time recording and TV.
Specifically, the invention provides a kind of recording system of TV programme, comprise, audio frequency and video output unit and recording elements, described audio frequency and video output unit comprise,
The video acquisition processing unit receives the vision signal of television high frequency head, sends digital video signal after handling to the mixed processing coding unit, and the vision signal that is used to gather TV is carried out video decode;
The audio collection processing unit receives the audio signal of television high frequency head, sends digital audio and video signals after handling and respective synchronization signal to the mixed processing coding unit, and the audio signal that is used to gather TV is carried out audio decoder;
The mixed processing coding unit receives the digital video signal of described video acquisition processing unit and the digital audio and video signals and the respective synchronization signal of described audio collection processing unit; Send mixed processing coded data stream signal to USB port, be used for digital video signal and digital audio and video signals and carry out mixed processing, and be encoded to the traffic spike that USB port can receive according to the respective synchronization signal;
Described audio frequency and video output unit further comprises,
USB port receives the traffic spike that described mixed processing coding unit sends, and sends described traffic spike to recording elements; Connect recording elements, give audio frequency and video output unit and the power supply of television high frequency head when being used for television set standby or off-mode;
The I2C control unit is connected with the television high frequency head with described mixed processing coding unit, is used for the normal output of television set standby or off-mode time control NTSC television system NTSC tuner TV signal.
Described recording elements comprises,
USB interface receives the traffic spike that described audio frequency and video output unit is exported; Send described traffic spike to memory cell,
Memory cell is used to preserve described traffic spike.
Described recording arrangement further comprises,
Decoding unit is used for described traffic spike is decoded, and makes traffic spike revert to corresponding television audio and video signals;
Broadcast unit is used to play the audio-video signal of described decoding unit decodes;
Coding unit links to each other with described decoding unit, is used for the audio-video signal of described decoding unit decodes is encoded, and is converted to the universal media file;
Memory cell links to each other with described coding unit, and described memory cell is used to preserve described universal media file.
Described mixed processing coding unit adopts the EMP2860 chip.
Described audio collection processing unit adopts the EMP202 chip.
Described video acquisition processing unit adopts the SAA7113 chip.
Described I2C control unit adopts the 74HC4052 chip.
The invention provides a kind of method of television program record, comprise step:
1) judges whether normal power supply of TV, if normal power supply execution in step 4 then; Otherwise execution in step 2;
2) USB port is the power supply of television high frequency head, uses the 5V of USB to give the power supply of television high frequency head;
3) the normal outgoing television signal of the total line traffic control television high frequency of I2C head, the I2C bus of tuner links to each other with the I2C bus of mixed processing unit, and by mixed processing unit controls television high frequency head, thereby the assurance TV signal is normally exported;
4) gather audio-video signal, gather the video and audio signal of TV respectively;
5) audio-video signal of gathering is decoded, the video and audio signal that collects is carried out corresponding decoding handle, difference output digital video signal, and serial digital audio signal and respective synchronization signal;
6) decoded audio-video signal is carried out hybrid coding and handle, will receive digital video signal and serial audio signal and carry out mixed processing according to synchronizing signal and encode, at last signal being converted into can be by the data flow of USB mouth output;
7) signal behind the USB port output encoder is to computer;
8) computer is preserved described signal.
Described step 7 comprises,
7-1) computer carries out decoding processing to the signal that receives, and reverts to corresponding audio-video signal;
7-2) play described audio-video signal.
Described step 7 may further include,
7-1-1) audio-video signal after the described recovery is encoded;
7-1-2) make the universal media file.
Compared with prior art, the invention has the beneficial effects as follows:
1. can realize the timed recording TV programme.The present invention can be provided with according to the user, records corresponding TV programme in the corresponding time, makes recording TV program more convenient, and is more humane.
2. can be at television standby or off-mode recording TV program.The present invention adopts USB port for the power supply of television high frequency head, can be implemented under television standby or the off-mode according to the customer requirements recording TV program.
3. can become the universal media file to the television program designing of recording.The present invention can encode to the TV programme of recording, and is made into universal media files such as VCD/DVD, makes things convenient for the user to preserve use.
Description of drawings
Fig. 1 is one embodiment of the invention structured flowchart;
Fig. 2 is a kind of concrete logical circuitry of audio frequency and video output unit shown in Figure 1;
Fig. 3 is a kind of physical circuit figure of audio frequency and video output unit USB port power supply;
Fig. 4 is a kind of physical circuit figure of I2C control unit shown in Figure 2;
Fig. 5 is a kind of TV program recording method flow chart of the present invention.
Embodiment
The technical problem to be solved in the present invention provides a kind of recording system of TV programme, and the recording system of this TV programme has the function that the shutdown of timed recording and TV is recorded, and can become the universal media file to the content production of recording, and is user-friendly to.
At first with reference to figure 1, this figure is in a plurality of embodiment block diagrams of television program record provided by the invention system.The television program record system that Fig. 1 describes comprises audio frequency and video output unit 2 and recording elements 3.Described audio frequency and video output unit 2 further comprises audio collection processing unit 22, video acquisition processing unit 23, mixed processing coding unit 24, USB port 25 and I2C control unit 26.
Video acquisition processing unit 23, the vision signal that is used to gather TV is carried out video decode; Receive the vision signal of television high frequency head 1, the digital video signal that sends after handling arrives mixed processing coding unit 24.
Audio collection processing unit 22, the audio signal that is used to gather TV is carried out audio decoder; Receive the audio signal of television high frequency head 1, the digital audio and video signals and the respective synchronization signal that send after handling arrive mixed processing coding unit 24.
Mixed processing coding unit 24 is used for digital video signal and digital audio and video signals and carries out mixed processing and coding according to the respective synchronization signal; Receive the digital video signal of described video acquisition processing unit 23 and the digital audio and video signals and the respective synchronization signal of described audio collection processing unit 22; Send the code signal data and flow to USB port 25.
USB port 25 connects recording elements 3, gives audio frequency and video output unit 2 and 1 power supply of television high frequency head when being used for television set standby or off-mode; Receive the traffic spike that described mixed processing coding unit 24 sends, and send described traffic spike to recording elements.
I2C control unit 26 is connected with television high frequency head 1 with described mixed processing coding unit 24, is used for the I2C control unit of the normal output of television set standby or off-mode time control NTSC television system NTSC tuner 1TV signal.
Described recording elements 3 comprises USB interface 34, decoding unit 31, coding unit 32, broadcast unit 33 and memory cell 35.
USB interface 34 is used to receive the code signal data flow that described audio frequency and video output unit 2 is exported; Receive the traffic spike of audio frequency and video output unit 2, send described data and flow to decoding unit 31, also can directly send to memory cell 35 and preserve.
Decoding unit 31 is used for the code signal data flow that audio frequency and video output unit 2 sends decoded and recovers corresponding audio-video signal, and the audio-video signal of this moment can directly be play-overed by broadcast unit 33.
Coding unit 32 links to each other with decoding unit 31, is used for the television audio and video signals that decoding unit 31 recovers is encoded, and is converted to the universal media file.
Memory cell 35 links to each other with USB interface 34 with coding unit 32, is used for the universal media file of memory encoding unit 32 conversions, also can store the code signal data flow that described USB interface 34 receives.
Broadcast unit 33 links to each other with coding unit 32 with decoding unit 31, is used for the universal media file of described coding unit 32 making and the television audio and video signals of decoding unit 31 recoveries are play.
When the television set operate as normal, the TV main circuit board is responsible for the control to television tuner 1 power supply and I2C.This moment, television high frequency head 1 provided the TV that comprises video and audio frequency signal for this audio frequency and video output unit 2.USB port 25 links to each other with recording elements, when television set standby or off-mode, described USB port 25 is television high frequency head 1 and 2 power supplies of audio frequency and video output unit, I2C control unit 26 sends and controls signal to television high frequency head 1, when making television high frequency head 1, for audio frequency and video output unit 2 provides normal audio-video signal as the television set operate as normal.Vision signal is carried out video decode processing, output digital video signal through penetrating with entering video acquisition processing unit 23 after the circuit isolation.This digital video signal is input to mixed processing coding unit 24.Audio signal is carried out audio decoder processing, output serial digital audio signal and respective synchronization signal through penetrating with entering audio collection processing unit 22 after the processing of circuit.Serial digital audio signal and respective synchronization signal also are input to mixed processing coding unit 24.Mixed processing coding unit 24 carries out the mixed processing coding with the digital video signal and the serial audio signal that receive according to synchronizing signal, and being converted into can be by the data flow of USB port 25 outputs.This data flow is recorded preservation by the memory cell 35 that the USB line is transferred to recording elements 3.This data flow is decoded by 31 pairs of these data flow of decoding unit, reverts to corresponding video and audio signal, plays by broadcast unit 33.Video and audio signal after the recovery also can by coding unit 32 encode once more with this Voice ﹠ Video signal be converted into DVD SVCD universal media file format such as VCD be kept on the memory cell 35.The universal media file of memory cell 35 also can be play by broadcast unit 33.
Television program record provided by the invention system realizes the real-time recording to TV programme, the continuous record of segmentation.For example several discontinuous TV Festivals catalogue can be play in a file continuously.Can also realize timed recording, for example the user can set in advance certain time and records certain program and need not to turn on television set at the television set scene.The user reviews in the time of can chasing after TV programme, can control the program rewind down that records, F.F., time-out, broadcast etc.
Audio frequency and video output unit 2 in this example can be understood with reference to figure 3.Fig. 2 is a kind of concrete logical circuitry of audio frequency and video output unit 2 shown in Figure 1.This illustrates audio collection processing unit 22 and adopts EMP202 to realize the audio collection processing capacity.Video acquisition processing unit 23 adopts SAA7113 to realize the video acquisition processing capacity.Mixed processing coding unit 24 adopts the EMP2860 chip to realize audio-video signal hybrid coding function.USB port 25 adopts the IRF7314 chips to close or be television high frequency head 1 and 2 power supplies of audio frequency and video output unit during holding state at TV.I2C control unit 26 adopts 74HC4052 chip controls television high frequency head 1 normal output audio-video signal.
Because audio frequency and video output unit 2 is the application based on television set, this unit is the audio-video signal with TV, for example TV signal, AV signal, S terminal signals, color difference signal etc. are converted into a kind of traffic spike, and this traffic spike can be by USB port 25 outputs.In actual applications, following two kinds of situations are arranged:
1, in the time of television operations, the audio-video signal of TV (as TV signal, AV signal, S terminal signals, color difference signal) is directly inputted to audio frequency and video output unit 2.Vision signal is carried out the video decode processing through penetrating with entering SAA7113 after the circuit isolation, through handling the digital video signal of 8 of outputs.This digital video signal of 8 is input to EMP2860.Audio signal is carried out audio decoder processing, output serial digital audio signal and respective synchronization signal through penetrating with entering EMP202 after the processing of circuit.This serial digital audio signal and respective synchronization signal also are input to EMP2860.8 bit digital vision signals that EMP2860 will receive and serial audio signal are carried out the mixed processing coding according to synchronizing signal, and being converted into can be by the traffic spike of USB port 25 outputs.This traffic spike is transferred on the recording elements 3 by the USB line
2, in the time of TV shutdown or standby, audio frequency and video output unit 2 is judged tv state by detecting the 12V power supply in the TV.In the time of TV shutdown or standby, there is not the 12V power supply, the 5V of the USB port 25 that links to each other with recording elements 3 gives television high frequency head 1 and 2 power supplies of audio frequency and video output unit, I2C control unit 26 links to each other the I2C bus of television high frequency head 1 with the I2C bus of EMP2860, by the 1 normal output with the assurance television audio and video signals of EMP2860 control television high frequency head.And then be input to audio frequency and video output unit 2, by corresponding units audio-video signal is decoded, mixes, encoded, by USB port 25 outputs.
Below in conjunction with Fig. 3, Fig. 4 USB port power supply the principle and I2C control unit control principle are described.Fig. 3 is a kind of physical circuit figure of audio frequency and video output unit USB port power supply shown in Figure 2; Fig. 4 is a kind of physical circuit figure of I2C control unit shown in Figure 2.
Under the TV normal operating conditions, " VCC ± 12V " is high level.Q9 conducting on the power supply circuits at this moment, Q8 ends, and the beginning of IRF7314 can signal " EN " be a high level, and this moment, IRF7314 was in off-state.Q6 ends on the I2C circuit at this moment, and 11 pin of 74HC4052 chip and 13 pin, 4 pin and 3 pin all are in off-state.The power supply of television high frequency head and I2C control are responsible for by the TV main circuit board, guarantee the relatively independent of TV and audio frequency and video output unit 2, thereby guarantee the working stability of TV and audio frequency and video output unit 2.
" VCC ± 12V " was low level when TV was in shutdown or holding state.Q9 ends on the power supply circuits at this moment, the Q8 conducting, and the beginning of IRF7314 can signal " EN " be a low level, this moment, IRF7314 was in conducting state.Q6 conducting on the I2C circuit at this moment, 11 pin of 74HC4052 chip and 13 pin, 4 pin and 3 pin all are in conducting state.This moment, the power supply and the I2C control of tuner were responsible for by USB port 25 that links to each other with recording elements 3 and I2C control unit 26.Thereby guaranteed TV under shutdown or holding state, the normal output of television audio and video signals.
The present invention also provides a kind of method for recording of TV programme, solves the problem that the shutdown of real-time recording and TV is recorded.Referring to Fig. 5, Fig. 5 is a kind of TV program recording method flow chart of the present invention.
The method of a kind of television program record of the present invention comprises step:
S11, judge whether normal power supply of TV, if normal power supply execution in step S14 then; Otherwise execution in step S12;
S12, be the power supply of television high frequency head, give the power supply of television high frequency head with the 5V of USB port by USB port;
The normal outgoing television signal of the total line traffic control television high frequency of S13, I2C head, the I2C bus of tuner links to each other with the I2C bus of mixed processing coding unit, and by mixed processing coding unit control television high frequency head, thereby the assurance TV signal is normally exported;
S14, gather audio-video signal, gather the video and audio signal of TV respectively;
S15, the audio-video signal of gathering is decoded, the video and audio signal that collects is carried out corresponding decoding handle, output digital video signal respectively, and serial digital audio signal and respective synchronization signal;
S16, decoded audio-video signal is carried out hybrid coding handle, will receive digital video signal and serial audio signal and carry out the mixed processing coding according to synchronizing signal, at last signal being converted into can be by the traffic spike of USB mouth output;
S17, by the traffic spike behind this USB port output encoder to recording elements, this recording elements can be computer;
S18, judge whether to preserve and record, if select to preserve then execution in step S22, otherwise execution in step S19;
S19, recording elements be computer for example, and the traffic spike that receives is carried out decoding processing, reverts to corresponding television audio and video signals;
S20, judge whether to play the television audio and video signals after the recovery, if select to play then execution in step S23, otherwise execution in step S21;
S21, the audio-video signal after the described recovery is encoded again, make the universal media file;
S22, record preservation;
S23, playing audio-video signal.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (12)

1, a kind of television program record system comprises audio frequency and video output unit and recording elements, and described audio frequency and video output unit comprises,
The video acquisition processing unit receives the vision signal of television high frequency head, sends digital video signal after handling to the mixed processing coding unit, and the vision signal that is used to gather TV is carried out video decode;
The audio collection processing unit receives the audio signal of television high frequency head, sends digital audio and video signals after handling and respective synchronization signal to the mixed processing coding unit, and the audio signal that is used to gather TV is carried out audio decoder;
The mixed processing coding unit receives the digital video signal of described video acquisition processing unit and the digital audio and video signals and the respective synchronization signal of described audio collection processing unit; Send mixed processing coded data stream signal to USB port, be used for digital video signal and digital audio and video signals and carry out mixed processing, and be encoded to the traffic spike that USB port can receive according to the respective synchronization signal;
It is characterized in that described audio frequency and video output unit further comprises,
USB port receives the traffic spike that described mixed processing coding unit sends, and sends described traffic spike to recording elements; Connect recording elements, give audio frequency and video output unit and the power supply of television high frequency head when being used for television set standby or off-mode;
The I2C control unit is connected with the television high frequency head with described mixed processing coding unit, is used for the normal output of television set standby or off-mode time control NTSC television system NTSC tuner TV signal.
Described recording elements comprises,
USB interface receives the traffic spike that described audio frequency and video output unit is exported; Send described traffic spike to memory cell,
Memory cell is used to preserve described traffic spike.
2, television program record as claimed in claim 1 system is characterized in that described recording arrangement further comprises, decoding unit is used for described traffic spike is decoded, and makes traffic spike revert to corresponding television audio and video signals.
3, television program record as claimed in claim 2 system is characterized in that described recording arrangement further comprises, broadcast unit is used to play the audio-video signal of described decoding unit decodes.
4, television program record as claimed in claim 2 system, it is characterized in that described recording arrangement further comprises, the coding unit that links to each other with described decoding unit, described coding unit is used for the audio-video signal of described decoding unit decodes is encoded, and is converted to the universal media file.
5, television program record as claimed in claim 1 system is characterized in that described memory cell links to each other with described coding unit, and described memory cell is used to preserve described universal media file.
6, television program record as claimed in claim 1 system is characterized in that, described mixed processing coding unit adopts the EMP2860 chip.
7, television program record as claimed in claim 1 system is characterized in that, described audio collection processing unit adopts the EMP202 chip.
8, television program record as claimed in claim 1 system is characterized in that, described video acquisition processing unit adopts the SAA7113 chip.
9, television program record as claimed in claim 1 system is characterized in that, described I2C control unit adopts the 74HC4052 chip.
10, a kind of method of television program record is characterized in that comprising step:
1) judges whether normal power supply of TV, if normal power supply execution in step 4 then; Otherwise execution in step 2;
2) USB port is the power supply of television high frequency head, uses the 5V of USB to give the power supply of television high frequency head;
3) the normal outgoing television signal of the total line traffic control television high frequency of I2C head, the I2C bus of tuner links to each other with the I2C bus of mixed processing unit, and by mixed processing unit controls television high frequency head, thereby the assurance TV signal is normally exported;
4) gather audio-video signal, gather the video and audio signal of TV respectively;
5) audio-video signal of gathering is decoded, the video and audio signal that collects is carried out corresponding decoding handle, difference output digital video signal, and serial digital audio signal and respective synchronization signal;
6) decoded audio-video signal is carried out hybrid coding and handle, will receive digital video signal and serial audio signal and carry out mixed processing according to synchronizing signal and encode, at last signal being converted into can be by the data flow of USB mouth output;
7) signal behind the USB port output encoder is to computer;
8) computer is preserved described signal.
11, the method for television program record as claimed in claim 10 is characterized in that, described step 7 comprises,
7-1) computer carries out decoding processing to the signal that receives, and reverts to corresponding audio-video signal;
7-2) play described audio-video signal.
12, the method for television program record as claimed in claim 11 is characterized in that, described step 7 may further include,
7-1-1) audio-video signal after the described recovery is encoded;
7-1-2) make the universal media file.
CN200610098935A 2006-03-15 2006-07-17 System and method for recording television program Active CN100583970C (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101290607B (en) * 2008-05-31 2010-06-16 青岛海信电器股份有限公司 Chip debugging interface device
CN101986700A (en) * 2010-10-29 2011-03-16 广东星海数字家庭产业技术研究院有限公司 Digital television play management method and system
CN102932668A (en) * 2012-11-29 2013-02-13 济南中维世纪科技有限公司 USB (universal serial bus) transmission based audio-video data processing device
CN102932669A (en) * 2012-11-29 2013-02-13 济南中维世纪科技有限公司 USB (universal serial bus) transmission based audio-video data processing method and device
CN104301770A (en) * 2014-09-28 2015-01-21 四川长虹电器股份有限公司 Method and air conditioner for recording TV programs
CN105657255A (en) * 2015-12-29 2016-06-08 合肥宏晶微电子科技股份有限公司 Driver free data collection method of USB video collection card

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101290607B (en) * 2008-05-31 2010-06-16 青岛海信电器股份有限公司 Chip debugging interface device
CN101986700A (en) * 2010-10-29 2011-03-16 广东星海数字家庭产业技术研究院有限公司 Digital television play management method and system
CN102932668A (en) * 2012-11-29 2013-02-13 济南中维世纪科技有限公司 USB (universal serial bus) transmission based audio-video data processing device
CN102932669A (en) * 2012-11-29 2013-02-13 济南中维世纪科技有限公司 USB (universal serial bus) transmission based audio-video data processing method and device
CN102932669B (en) * 2012-11-29 2016-06-29 济南中维世纪科技有限公司 A kind of audio and video data processing method based on USB transmission and device
CN102932668B (en) * 2012-11-29 2016-07-06 济南中维世纪科技有限公司 A kind of audio, video data based on USB transmission processes device
CN104301770A (en) * 2014-09-28 2015-01-21 四川长虹电器股份有限公司 Method and air conditioner for recording TV programs
CN105657255A (en) * 2015-12-29 2016-06-08 合肥宏晶微电子科技股份有限公司 Driver free data collection method of USB video collection card

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