WO2012119509A1 - 一种音视频信号传输接口的装置及方法 - Google Patents
一种音视频信号传输接口的装置及方法 Download PDFInfo
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- WO2012119509A1 WO2012119509A1 PCT/CN2012/071324 CN2012071324W WO2012119509A1 WO 2012119509 A1 WO2012119509 A1 WO 2012119509A1 CN 2012071324 W CN2012071324 W CN 2012071324W WO 2012119509 A1 WO2012119509 A1 WO 2012119509A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network
- H04N21/43632—Adapting the video or multiplex stream to a specific local network, e.g. a IEEE 1394 or Bluetooth® network involving a wired protocol, e.g. IEEE 1394
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
Definitions
- Audio and video signal transmission lines are used to transmit audio signals or audio and video signals output by devices such as computers and smart mobile terminals to users or other devices. Audio and video signal transmission lines include line headphones, audio and video data lines, and the like.
- the line headphones are divided into LRG earphones, LRMG earphones and LRGM earphones according to the line sequence.
- the LRG headset includes two left and right channels; the LRMG headset and the LRGM headset both include the left and right channels and the microphone.
- Embodiments of the present invention provide an audio and video signal transmission interface apparatus and method, thereby solving the compatibility problem between different types of devices and audio and video signal transmission lines.
- An audio and video signal transmission interface device comprising a left channel interface, a right channel interface, a multimedia terminal interface and a ground interface, wherein a voltage detection point is arranged in a circuit of the multimedia terminal interface, and the first power source is connected through the first resistor To the voltage detection point, the device further includes: a voltage detection module, a determination module, a control module, and a second resistor connected to the voltage detection point at one end and connected to the power source at the other end:
- the voltage detecting module is configured to detect, at the voltage detecting point, a voltage value of a multimedia terminal in the inserted audio and video signal transmission line, where the multimedia terminal of the audio and video signal transmission line includes an audio or video terminal or a microphone terminal, and the second resistor The resistance value is greater than the internal resistance value of the audio and video terminal and smaller than the internal resistance value when the microphone terminal is reversely connected; the determining module is configured to determine the audio and video signal transmission line according to the detection result of the voltage detection module type;
- the control module is configured to perform processing according to the judgment result of the determining module.
- a method for processing an inserted audio and video signal transmission line by the interface device of claim 1, comprising: after the audio and video signal transmission line is inserted into the interface device, the voltage detection module measures that the first resistance is turned on And the first voltage value of the multimedia terminal in the audio and video signal transmission line when the second resistor is disconnected; the determining module determines whether the first voltage value is greater than a first threshold or less than a third threshold, if And determining that the audio and video signal transmission line is an earphone that matches an interface line sequence of the device; otherwise, triggering the control module to work, the first threshold is greater than the third threshold;
- the control module cuts off the first resistor, turns on the second resistor, and triggers the voltage detecting module to re-measure the voltage; the voltage detecting module further measures the audio and video signal according to the trigger of the control module. a second voltage value of the multimedia terminal in the transmission line;
- the determining module further compares the magnitude relationship between the second voltage value and the second threshold. If the second voltage value is less than or equal to the second threshold, determining that the audio and video signal transmission line is an audio and video data line; Otherwise, it is determined that the audio and video signal transmission line is an earphone that does not match the interface line sequence of the device; and the determination result is sent to the control module, where the second threshold is smaller than the first threshold and greater than the third Threshold value
- the control module further disconnects the second resistor, turns on the first resistor, and uploads an audio-video data line insertion message;
- the control module further disconnects the second resistor, turns on the first resistor, and switches the multimedia terminal interface The wire sequence with the ground interface.
- a second resistor having a resistance value between the audio and video terminal resistance value and the reverse resistance of the microphone terminal is added on the device side. , so that it can accurately identify three-stage headphones (such as LRG (left channel - right channel - ground) headphones), LRMG (left channel - right channel - microphone - ground wire) wire sequence headphones, LRGM (left sound) Track-right channel-grounding wire-mike) Line-sequenced headphones and audio and video data lines, and realize the adaptation of different earphones, achieving compatibility between different types of devices and audio and video signal transmission lines.
- LRG left channel - right channel - ground
- LRMG left channel - right channel - microphone - ground wire
- LRGM left sound Track-right channel-grounding wire-mike
- FIG. 1 is a schematic structural diagram of an interface device according to an embodiment of the present invention.
- FIG. 2 is a schematic circuit diagram of an interface device according to Embodiment 1 of the present invention.
- FIG. 3 is a circuit diagram of an LRMG line-sequence earphone insertion interface device according to Embodiment 1 of the present invention
- FIG. 4 is a circuit diagram of an LRGM line-sequence earphone insertion interface device according to Embodiment 1 of the present invention
- FIG. 6 is a schematic circuit diagram of an audio/video data line insertion interface device according to Embodiment 1 of the present invention
- FIG. 7 is a flowchart of operation of an interface device according to Embodiment 1 of the present invention.
- FIG. 8 is a schematic circuit diagram of the LRGM line-sequence earphone insertion interface device after being compatible with the processing according to the first embodiment of the present invention
- FIG. 9 is a schematic circuit diagram of an interface device according to Embodiment 2 of the present invention.
- FIG. 10 is a schematic circuit diagram of an interface device according to Embodiment 3 of the present invention.
- FIG. 11 is a circuit diagram of an LRGM line-sequence earphone insertion interface device according to Embodiment 3 of the present invention
- FIG. 12 is a circuit diagram of an LRMG line-sequence earphone insertion interface device according to Embodiment 3 of the present invention
- FIG. 14 is a circuit diagram of an audio/video data line insertion interface device according to Embodiment 3 of the present invention
- FIG. 15 is a flowchart of operation of an interface device according to Embodiment 3 of the present invention.
- FIG. 16 is a schematic circuit diagram of a LRMG line-sequence earphone insertion interface device compatible with processing according to Embodiment 3 of the present invention
- FIG. 17 is a schematic circuit diagram of an interface device according to Embodiment 4 of the present invention.
- the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. example. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
- An embodiment of the present invention provides an audio and video signal transmission interface device.
- the device includes: a left channel interface 101, a right channel interface 102, a multimedia terminal interface 103, and a ground interface 104, and is at a multimedia terminal interface.
- a voltage detection point is provided in the circuit of 103, and the first power source 105 is connected to the voltage detection point through the first resistor 106.
- the line sequence of the interface device is usually: left channel interface - right channel interface - multimedia terminal interface - ground interface; or: left channel interface - right channel interface - ground interface - multimedia terminal interface .
- the interface device in the embodiment of the present invention will be described by taking the above two kinds of line sequences as an example.
- the interface device further includes a voltage detecting module 108, a determining module 109, a control module 110, and one end connected to the voltage detecting point, and the other end A second resistor 111 connected to the power source.
- the voltage detecting module 108 is configured to detect a voltage value of the multimedia terminal in the inserted audio and video signal transmission line at the voltage detecting point;
- the determining module 109 is configured to determine the type of the audio and video signal transmission line according to the detection result of the voltage detecting module 108;
- the processing is performed according to the judgment result of the judging module 109.
- the processing operation may be, but is not limited to, controlling a line sequence between the multimedia terminal interface and the ground interface.
- the multimedia terminal of the audio/video signal transmission line includes an audio/video terminal or a microphone terminal, the audio and video terminal is a multimedia terminal in the audio and video data line, and the microphone terminal is a multimedia terminal in the earphone.
- the resistance of the second resistor 111 is greater than the internal resistance value of the audio and video terminals, and is smaller than the internal resistance value when the microphone terminals are reversely connected.
- the interface device provided by the embodiment of the present invention is configured on the device side, and may be an interface on the device side, or may be an independent device connected to the interface on the device side.
- the determining module 109 and the control module 110 may be specifically implemented by a CPU.
- the audio and video signal transmission line includes a three-segment earphone, an LRMG line sequential earphone, an LRGM line sequential earphone, and an audio and video data line (the line sequence is LRVG, V is an audio and video terminal).
- the resistance of the first resistor ranges from 1500 to 3000 ohms; the multimedia terminal in the LRMG line headphone and the LRGM line headphone is the microphone terminal, and the internal resistance value when the microphone terminal is connected is 2000 ⁇ 3500 ohms, the microphone terminal
- the internal resistance value in the positive connection is 2 to 3 times when the reverse connection is made; the multimedia terminal in the audio and video data line is the audio and video terminal, and the resistance value of the audio and video terminal is about 75 ohms.
- the resistance value is not much different from that of the first resistor.
- the voltage division on the earphone side is The voltage division of the first resistor is similar; (2) Since the three-segment earphone does not include the multimedia terminal, when the three-segment earphone is inserted into the interface device, the voltage division on the earphone side is almost zero; (3) due to the LRMG line The resistance value of the microphone head of the serial headphone and the LRGM line headphone is reversed, and the resistance value of the audio and video terminal of the audio and video data line is compared with the resistance value of the first resistor. If the voltage is much smaller, the voltage division value relative to the first resistor is also lower.
- the LRMG line headphone and the LRGM line headphone are not distinguished from each other, and the audio and video data is line.
- the voltage value of the audio-video signal transmission line side can be measured by the second resistor-divided voltage in the loop of the power supply-second resistance-transmission line side multimedia terminal-ground interface connected by the second resistor. Since the resistance value of the LRMG line sequence earphone (or LRGM line sequence earphone) when the microphone terminal is reversed is greater than the resistance value of the audio and video terminal of the audio and video data line, the resistance of the second resistance can be set to be larger than the resistance value of the audio and video terminal.
- the resistance of the second resistor 111 ranges from 150 to 350 ohms. According to the range of values of the above resistance values and the analysis of the voltage division relationship, in the circuit of the first resistor divider, when the microphone terminal of the LRMG line headphone (or LRGM line headphone) is connected, the voltage division on the headphone side The value is larger than the voltage division value of the other types of transmission lines.
- the first threshold is set, so as to determine, according to the first threshold, whether the inserted terminal is the positive terminal of the microphone terminal.
- the LRMG line-sequence earphones (or LRGM line-sequencing earphones); and according to the above-mentioned characteristics of the three-segment earphones, a third threshold is set (by way of example and not limitation, the value range of the third threshold is less than 0.3 volts),
- the second threshold can be set according to the power supply capability of the power source connected to the second resistor and the above-mentioned resistance value feature
- the voltage detecting module 108 measures the first voltage value of the multimedia terminal in the inserted audio and video signal transmission line when the first resistor 106 is turned on and the second resistor 111 is turned off;
- the module 109 determines whether the first voltage value is greater than the first threshold or less than the third threshold, and if yes, determining that the audio and video signal transmission line is an earphone that matches the interface line sequence of the interface device (interface line sequence with the interface device)
- the matching earphone refers to: the LRMG earphone (or LRGM earphone) that is connected to the microphone terminal, or the three-segment earphone; otherwise, the trigger control module 110 works (by way of example and not limitation, the determination module 109 can send the control module 110 unrecognizable The signal triggers the operation of the control module 110.
- the control module 110 After receiving the unrecognizable signal, the control module 110 turns off the circuit of the first resistor divider and turns on the loop of the second resistor divider. Accordingly, the control module 110 Disconnecting the first resistor 106, turning on the second resistor 111, and triggering the voltage detecting module 108 to re-measure the voltage; Correspondingly, the voltage detecting module 108 further measures a second voltage value of the multimedia terminal in the audio and video signal transmission line according to the trigger of the control module 110; the determining module 109 further compares the magnitude relationship between the second voltage value and the second threshold.
- the second voltage value is less than or equal to the second threshold, determining that the audio and video signal transmission line is an audio and video data line; otherwise, determining that the audio and video signal transmission line does not match the line sequence of the interface device
- the earphone (the earphone that does not match the line sequence of the interface device refers to: the LRMG earphone or the LRGM earphone that is reversed by the microphone terminal); the judgment result is sent to the control module 110 (by way of example and not limitation, the control module 110 can judge according to the judgment The result identifies the corresponding transmission line type, and then takes the corresponding action);
- the control module 110 further turns off the second resistor 111, turns on the first resistor 106, and uploads an audio-video data line insertion message;
- the control module If the audio/video signal transmission line is a headset that does not match the line sequence of the interface device, the control module
- the 110 also disconnects the second resistor 111, turns on the first resistor 106, and switches the line order of the multimedia terminal interface 103 and the ground port 104.
- the specific implementation of the line sequence of the switch between the multimedia terminal interface 103 and the ground port 104 may be: switching the multimedia terminal interface and the ground interface by controlling an analog switch disposed between the multimedia terminal interface and the ground interface Line order.
- an analog switch controlled by a power control line is further included between the multimedia terminal interface 103 and the ground interface 104 of the interface device, and the control module 110 controls the analog switch to switch the multimedia self interface by switching the output level of the power control line.
- the analog switch When the power control line outputs a high level, the analog switch is turned off, the line order between the multimedia terminal interface 103 and the ground interface 104 is not changed; or, (2) when the power control line outputs a high level, the simulation The switch is closed, and the line sequence between the multimedia terminal interface 103 and the ground interface 104 is switched.
- the analog switch control mode in the above (1) is taken as an example for description.
- the interface device provided by the embodiment of the present invention can recognize different types of audio and video data transmission lines inserted, and realize compatibility of the device with different types of audio and video data transmission lines.
- the added second resistor 111 can be connected in parallel with the first resistor 106, and is powered by the first power source 105. That is, the power source connected to the second resistor 106 is the first power source 105.
- a preferred implementation manner of the embodiment of the present invention is to increase the second power source 112 connected to the second resistor 111, and turn off the second resistor 111 by turning off the second power source 112.
- the second resistor 111 is turned on by turning on the second power source 112; the first resistor 106 is turned off by turning off the first power source 105; and the first resistor 106 is turned on by turning on the first power source 105. Since the second power source 112 is added, it has little effect on the existing interface circuit, and is a relatively stable and less risky implementation.
- Embodiment 1 The specific implementation manners of the embodiments of the present invention in the actual application process will be described in detail below. Embodiment 1
- the circuit diagram of the audio and video signal transmission interface device shown in FIG. 2 the interface device line sequence is: left channel interface - right channel interface - multimedia terminal interface - ground interface. And a second power source and a second resistor are disposed at a voltage detection point on the circuit of the multimedia terminal interface. By default, the second power is turned off, the first power is turned on, and the power control line is output high.
- FIG. 2 When an audio/video signal transmission line is inserted into the interface device, the voltage value on the transmission line side is detected by a voltage measurement point (the position of which is shown in FIG. 2) set on the circuit of the multimedia terminal, thereby identifying and compatible with different types of transmission lines.
- the circuit diagram of different types of audio and video data transmission lines inserted into the interface device is shown in Figures 3 to 6.
- 3 is a circuit diagram of the LRMG line sequence earphone insertion interface device
- FIG. 4 is a circuit diagram of the LRGM line sequence earphone insertion interface device
- FIG. 5 is a circuit diagram of the three-stage earphone insertion interface device
- a circuit diagram of a line insertion interface device A circuit diagram of a line insertion interface device.
- the working process of the interface device is as shown in FIG. 7, and includes the following operations:
- the voltage detecting module measures the voltage at the voltage measuring point, and obtains the first voltage value, and executes S702;
- the determining module determines whether the first voltage value is greater than the first threshold, if yes, then executing S703, otherwise, executing S704;
- the judging module judges that the LRMG line sequential earphone is inserted
- the determining module determines whether the first voltage value is less than the third threshold, and if yes, executing S705; otherwise, sending unrecognized signaling to the control module, and executing S706;
- the judging module judges that the three-segment earphone is inserted
- the line sequence of the three-stage earphone matches the interface line sequence of the interface device, and can be compatible by the interface device;
- control module After receiving the unrecognized signaling, the control module turns off the first power supply, and turns on the second power supply, and divides the voltage by the second resistor, and executes S707;
- the voltage detecting module measures the second voltage value at the voltage measuring point by the second resistor partial pressure, and executes S708;
- the determining module determines the magnitude relationship between the second voltage value and the second threshold, if the second voltage value is less than or equal to the second threshold, then executing S709; otherwise, executing S710; 5709.
- the judging module judges that the audio and video data lines are inserted, and sends the judgment result to the control module, and executes S711;
- the judging module judges that the LRGM line sequential earphone is inserted, and sends the judgment result to the control module, and executes S712;
- control module turns off the second power, turns on the first power, and reports a message inserted by the audio and video data line, so that the device side outputs the audio and video signal according to the message;
- both the audio signal and the video signal can be transmitted. Therefore, after the audio and video data lines are inserted, the audio and video data lines can be connected to the interface device.
- the device side is compatible. As for the specific transmission of the audio signal or the video signal, it is determined by the device side and is not within the scope of the present invention.
- the control module turns off the second power source, turns on the first power source, and switches the line sequence between the multimedia terminal interface and the ground interface by controlling the power control line output low level, and the circuit schematic is as shown in FIG. 8.
- the order of the threshold judgment is only an example and not a limitation. Those skilled in the art can also make threshold judgments in other orders according to the thought without deliberate labor.
- the above is a processing procedure taking the interface device of the LRMG line sequence as an example.
- the line sequence of the interface device is LRVG
- both the audio signal and the video signal can be transmitted in the video loop. Therefore, when the LRMG line sequence earphone is inserted, it is still compatible, and the processing thereof is the same as above.
- the interface device provided by the embodiment of the present invention can identify different types of audio and video data transmission lines through the foregoing operations, thereby implementing compatibility between different types of devices and audio and video data transmission lines.
- the circuit diagram of the audio and video signal transmission interface device shown in FIG. 9 is: the left channel interface - the right channel interface - the ground interface - the multimedia terminal interface (specifically, the LRGM Line order). And a second power source and a second resistor are disposed at a voltage detection point on the circuit of the multimedia terminal interface. By default, the second power is turned off, the first power is turned on, and the power control line is output low.
- the line sequence of the ground interface and the multimedia terminal interface is switched. As shown in FIG. 9, the actual line sequence after the switching is LRMG. Therefore, when the audio/video signal transmission line is inserted into the interface device, the processing manner can be referred to the processing procedure of the first embodiment. The only difference is:
- the operation of the second embodiment of the present invention is: the control module turns off the second power, turns on the first power, and switches the line sequence between the multimedia terminal interface and the ground interface by controlling the power control line to output a high level. Make The interface line sequence of the interface device is switched to LRGM.
- the interface device line sequence is: left channel interface - right channel interface - ground interface - multimedia terminal interface (specifically, LRGM Line order).
- a second power source and a second resistor are disposed at a voltage detection point on the circuit of the multimedia terminal interface. By default, the second power is turned off, the first power is turned on, and the power control line is output high.
- the voltage value on the transmission line side is detected by a voltage measuring point set on the circuit of the multimedia terminal, thereby identifying and compatible with different types of transmission lines.
- the circuit diagrams of different types of audio and video data transmission lines inserted into the interface device are shown in Figures 11 to 14.
- 11 is a circuit diagram of an LRGM line-sequence earphone insertion interface device
- FIG. 12 is a circuit diagram of an LRMG line-sequence earphone insertion interface device
- FIG. 13 is a circuit diagram of a three-segment earphone insertion interface device
- a circuit diagram of a line insertion interface device A circuit diagram of a line insertion interface device.
- the working process of the interface device is as shown in FIG. 15, and includes the following operations:
- the S150K voltage detecting module measures the voltage at the voltage measuring point to obtain the first voltage value, and executes S1502; S1502: the determining module determines whether the first voltage value is greater than the first threshold, and if yes, executes
- the judging module judges that the LRGM line sequential earphone is inserted
- the determining module determines whether the first voltage value is less than the third threshold, and if yes, executing
- the judging module judges that the three-segment earphone is inserted
- the line sequence of the three-segment earphone matches the interface line sequence of the interface device, and can be compatible by the interface device;
- control module turns off the first power, and turns on the second power, and divides by the second resistor, and executes S 1507;
- the voltage detecting module measures the second voltage value at the voltage measuring point by the second resistor partial pressure, and executes S1508;
- the determining module determines the magnitude relationship between the second voltage value and the second threshold, if the second voltage value is less than or equal to the second threshold, then executing S1509; otherwise, executing S1510; 51509. Since the audio and video data lines are inserted into the interface device of the LRGM line sequence, the resistance of the audio and video terminals is still 75 ohms in the constructed multimedia terminal circuit, so the judging module judges that the audio and video data lines are inserted, and the judgment result is obtained. Send to the control module, execute S 1511;
- the judging module judges that the LRMG line sequence earphone is inserted, and sends the judgment result to the control module, and executes S 1512;
- the S 151 K control module turns off the second power, turns on the first power, and switches the line sequence between the multimedia terminal interface and the ground interface by controlling the power control line output low level, so as to establish a video path, and the audio and video data line is inserted. Message, so that the device side outputs an audio and video signal according to the message;
- both the audio signal and the video signal can be transmitted. Therefore, when the audio and video data lines are inserted, the control power supply control line outputs low power.
- the audio and video data lines are compatible with the device side where the interface device of the LRGM line sequence is located. As for the specific transmission of the audio signal or the video signal, it is determined by the device side and is not within the scope of the present invention.
- the control module turns off the second power, turns on the first power, and switches the line sequence between the multimedia terminal interface and the ground interface by controlling the power control line output low level, and the circuit schematic is as shown in FIG. 16.
- the interface device provided by the embodiment of the present invention can identify different types of audio and video data transmission lines through the foregoing operations, thereby implementing compatibility between different types of devices and audio and video data transmission lines.
- the interface device line sequence is: a left channel interface - a right channel interface - a multimedia terminal - an interface ground interface.
- a second power source and a second resistor are disposed at the voltage detection point on the circuit of the multimedia terminal interface. By default, the second power is turned off, the first power is turned on, and the power control line is output low.
- the power supply control line outputs a low level, and the line sequence of the ground interface and the multimedia terminal interface is switched.
- the actual line sequence after the switching is LRGM. Therefore, when the audio and video signal transmission line is inserted into the interface device, the processing manner of the above embodiment 3 can be referred to. The only difference is:
- the operation of the fourth embodiment of the present invention is: the control module turns off the second power source, turns on the first power source, and switches the line sequence between the multimedia terminal interface and the ground interface by controlling the power supply control line to output a high level (making The interface line sequence of the interface device is switched to: left channel interface - right channel interface - multimedia terminal - interface ground interface) to establish a video path, and report a message inserted in the audio and video data line, so that the device side outputs audio and video according to the message.
- the operation of the fourth embodiment of the present invention is: the control module turns off the second power, and turns on the first power. And switching the line sequence between the multimedia terminal interface and the ground interface by controlling the power supply control line output high level, so that the interface line sequence of the interface device is switched to: Left channel interface - right channel interface - multimedia terminal - interface ground interface .
- All or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to the program instructions.
- the foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments;
- the foregoing storage medium includes: various media that can store program codes, such as wake up, should, disk or optical disc.
Abstract
Description
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Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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EP12754505.1A EP2677742B1 (en) | 2011-03-08 | 2012-02-20 | Audio-video signal transmission interface device and method |
JP2013556951A JP5697764B2 (ja) | 2011-03-08 | 2012-02-20 | 音声映像信号伝送インターフェース装置および方法 |
KR1020137025142A KR101570173B1 (ko) | 2011-03-08 | 2012-02-20 | 오디오 및 비디오 신호 전송 인터페이스 장치 및 그 방법 |
US14/020,050 US9351076B2 (en) | 2011-03-08 | 2013-09-06 | Audio and video signal transmission interface apparatus and method thereof |
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CN201110059165.2 | 2011-03-08 | ||
CN201110059165A CN102164263B (zh) | 2011-03-08 | 2011-03-08 | 一种音视频信号传输接口的装置及方法 |
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US14/020,050 Continuation US9351076B2 (en) | 2011-03-08 | 2013-09-06 | Audio and video signal transmission interface apparatus and method thereof |
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EP (1) | EP2677742B1 (zh) |
JP (1) | JP5697764B2 (zh) |
KR (1) | KR101570173B1 (zh) |
CN (1) | CN102164263B (zh) |
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CN102164263B (zh) * | 2011-03-08 | 2012-09-05 | 华为终端有限公司 | 一种音视频信号传输接口的装置及方法 |
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