WO2007071149A1

WO2007071149A1 - Interfacing method and apparatus between signal sources and playback device

Info

Publication number: WO2007071149A1
Application number: PCT/CN2006/002831
Authority: WO
Inventors: Lin Xing
Original assignee: Lin Xing
Priority date: 2005-12-23
Filing date: 2006-10-23
Publication date: 2007-06-28
Also published as: CN2938642Y

Abstract

An interfacing method between signal sources and the playback device and the apparatus thereof are disclosed. The signal sources are provided with uniform plugs, and on one side of the plug is provided with a connector for connecting the circuit inside the casing of the signal source. The casing of the audio/video playback device is provided with slots which can be plugged in by the signal sources. Each of the slots is provided with a plug which can form a joggle with the plug of the signal source. The electronic connection between the plug and the playback device at least include: HDMI connection or DVI connection, sound signal connection, image signal connection, communication connection and casing shield connection, so that each of the signal sources plugged in the plug unit of the playback device can be power supplied by the playback device and communicate with the playback device.

Description

Interface method and interface device for signal source and playback device

The present invention relates to a data television interface technology, and in particular to an interface method and apparatus between an analog or digital audio/video signal source and a playback device, which can be applied to analog television programs, digital television set-top boxes, DVD, DVB, and Interface between a signal source such as IPTV and an A/V playback device.

Background Art

1

The traditional A/V signal is interconnected with its playback device by accepting the S terminal supporting the analog signal or the DVI interface supporting the digital signal. The former does not support the transmission of high-definition television signals. The latter's digital transmission bandwidth cannot meet the needs of many aspects, and the versatility is not enough. HDMI (High-Definition Multimedia Interface) is an uncompressed, all-digital audio/video interface supported by more and more enterprises, providing a plug-in connectivity solution for interconnecting audio/video sources with digital playback devices.

The prior art utilizes this interface in a manner that is indistinguishable from other interconnection methods. It is implemented by a cable with a connector that conforms to the HDMI specification at two ends. The disadvantages are mainly in the following aspects: First, poor overall performance, one It is very popular for the playback device to connect multiple signal sources. The external connection mode is often used, which makes the whole system not simple. Second, each signal source requires an independent power supply and remote control, and the use is not good. Third, it is not compatible with the signal source and playback. The analog signals between the devices are particularly disadvantageous for the progressive development of the playback system from analog to digital, and it is difficult to meet the needs of all levels in a short period of time. Summary of the invention

The technical problem to be solved by the present invention is to provide a signal source and playback for a plurality of signal source devices with good integrity, high flexibility, convenient use, and analog signal compatibility for the above-mentioned defects of the prior art. Interface methods and devices between devices.

The technical solution adopted by the present invention to solve the technical problem thereof is: constructing an interface method between a signal source and a playback device, comprising the following steps: setting a plug-in and a plug-in for sizing each other on the outer casing of each signal source device The terminal is connected to the circuit source device in the housing; one or more of the terminals of the audio/video playback device can be respectively placed outside one of the signal source devices a socket of the casing; a connector for engaging with the plug-in of the signal source device in each slot, the connector being connected to a circuit in the casing; the signal source device plug-in and the playing device The following connections are made between the connectors: HDMI connection or DVI connection, power connection, audio signal connection, image signal connection, serial communication connection and housing shield connection, so that each plug-in is connected to the playback device. The source device on the plug-in is powered by the playback device and communicates with the playback device.

In the interface method of the present invention, the HDMI cable includes a TMDS, a DDC, and a CEC connection terminal, and the voice communication line includes an audio ground, a right audio, and a left audio terminal, and the image signal connection includes a video ground, a UI, and a U. And a V terminal; the DVI connection includes a TMDS data, a DDC, a clock signal, and a synchronization signal connection terminal, where the sound connection includes an audio ground, a left audio, and a right audio terminal, and the image signal connection includes a video R, G and B terminals and video ground terminals.

In the interface method of the present invention, after receiving the remote control signal, the playback device performs the following steps: determining which source device is powered according to the device code; and supplying power to the selected signal source through the power connection According to the remote command code, the signal source device is controlled by the serial communication connection, and the signal source device sends a digital sound/image signal to the playback device through the HDMI connection, or provides the playback device through the sound signal connection and the image signal connection. Sound/image signal.

The invention also discloses an interface device between a signal source and a playback device, comprising a signal source device and a playback device, wherein the outer casing of the signal source device is provided with a plug-in, and the terminal of the plug-in is connected with the circuit source device in the outer casing; One or more slots respectively disposed in one of the signal source devices are disposed on the casing of the playback device, and a connector engageable with the plug-in of the signal source device is disposed in each slot, and the connection is The following connections are included between the plug-in and the playback device circuit and between the connector and the plug-in: HDMI connection or DVI connection, power connection, audio signal connection, image signal connection, serial communication connection and housing The wiring is shielded such that each of the signal source devices plugged into the playback device connector is powered by the playback device and communicates with the playback device.

In the interface device of the present invention, the HDMI cable includes a TMDS, a DDC, and a CEC connection terminal, and the sound signal connection includes an audio ground, a right audio, and a left audio terminal, and the image signal connection includes a video cellar, U. And a V terminal; the DVI connection includes a TMDS data, a DDC, a clock signal, and a synchronization signal connection terminal, the sound connection includes an audio ground, a left audio, a right audio terminal, and the image signal connection includes a video R, G and B terminals and video ground terminals. In the interface device of the present invention, after receiving the remote control signal, the playback device determines which source device is powered according to the device code; supplies power to the selected signal source through the power connection and according to the remote command code Control the source device operation through a serial communication connection, the source device passes or

The HDMI cable, DVI cable sends digital audio/video signals to the playback device, or provides audio/video signals to the playback device via audio signal connections and image signal connections.

In the interface device of the present invention, the signal source device is an analog television program, a DVD digital broadcast program, a DVB digital broadcast or an IPTV two-way network video on demand device.

In the interface device of the present invention, the playback device further includes a remote control receiving unit.

In the interface device of the present invention, a remote controller for transmitting the signal to the remote control receiving unit is further included, and the code value sequence transmitted by the remote controller is composed of the device number + function key value of the signal source device.

In the interface device of the present invention, the HDMI cable, the power cable, the audio signal connection, the image signal connection, the serial communication connection, and the housing shield connection include the following 31 leads or terminals: 1 pin And 12-pin DC12V, 3-pin and 4-pin POWER-GND, 5-pin TMDS data 2+, 6-pin TMDS data 2 shield, 7-pin TMDS data 2-, 8-pin TMDS data 1+, 9-pin TMDS data 1 masked, 10-pin TMDS data 1-, 11-pin TMDS data 0+, 12-pin TMDS data 0 masked, 13-pin TMDS data. 0+, 14-pin TMDS data 0+, 15-pin TMDS clock mask, 16-pin. TMDS clock, 17-pin CEC, 18-pin NC, 19-pin SCL, 20-pin SYS-SDA, 21-pin SYS-CLK, 22-pin AGND, 23-pin AUDIO- L, 24 feet of AUDIO-R, 25 feet of YGNDL, 26 feet of Y, 27 feet of U, 28 feet of V, 29 feet of DC12V/5A, 30 feet of POWER-GND and 31 feet of housing SHIELD- GND;

The DVI connection, power connection, audio signal connection, image signal connection, serial communication connection and housing shield connection include the following 31 leads or terminals: 1 pin +12V power supply, 2 pin DGND, 3-pin TMDS data D2-, 4-pin TMDS data D2+, 5-pin TMDS data D4-, 6-pin TMDS data M+, 7-pin DDC clock, 8-pin DDC data, 9-pin TMDS data D1-, 10 pin TMDS data Dl+, 11 pin TMDS data D3-, 12 pin TMDS data D3+, 13 pin hot plug detection, 1 pin TMDS data DO-, 15 pin TMDS data D0+, 16 pin TMDS data D5 -, 17-pin TMDS data D5+, 18-pin TMDS data CLK+, 19-pin TMDS data CLK-, 20 Line synchronization of the foot H. SYNC, 21-step field sync V. SYNC, 22-pin R, 23-pin G, 24-pin B, 25-pin VGND, 26-pin AUDIO-L, 27-pin AUDIO-R , 28-pin AGND, 29-pin RXD, 30-pin TXD, 31-pin PGND.

The implementation of the present invention can effectively solve the technical problems existing in the prior art. Due to the consideration of the diversity of the signal source and the optimal display effect of the digital television and the future expansion capability of the system, a modular design is adopted, that is, the high-definition digital As a standard playback device, the TV is equipped with modularization of analog and digital signal sources to facilitate product connection and flexible expansion. In this way, the digital TV source display standard can be fully reflected, and different types of digital images can be simultaneously viewed. TV sources, such as digital broadcast sources, digital broadcast sources and digital network sources, can also complete the transition from analog TV to digital TV at this stage. Functional upgrades or new features can be purchased by simply purchasing a functional module that complies with the source interface, providing a combination of different functional modules and digital TV at a lower, flexible cost, while supporting stand-alone use. Due to the flexible configuration of "modular", it also extends the consumption field of products. New technologies and new products can be applied to the system by adding newly developed modules.

Description

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, in which:

1 is a schematic structural diagram of a playback device used in the method and device for transmitting the interface;

Figure 2 is a logic block diagram of a playback device in the present invention;

3 is a schematic diagram of a connector pin in the interface method and device of the present invention;

4 is a schematic diagram of connection between a signal source device and a signal source interface unit according to the present invention;

5 is a schematic diagram of connection of an interface device in a playback device of the present invention;

Figure 6 is a schematic diagram of a remote controller in conjunction with the playback device of the present invention. detailed description

FIG. 1 is a schematic structural diagram of a playback device according to the present invention, including a playback device 1 and a remote controller 2, and further includes a DVD signal source device 3, a DVB signal source device 4, and an IP-TV signal source device 5, and a chassis 1 The front side of the chassis is a high-resolution display screen, and the front side of the chassis is also provided with an infrared remote control signal receiving window (not shown). The playback device 1 has a wiring board 9 at the back and three sockets at the top. Ports are respectively a first socket slot 6, a second socket slot 7 and a third socket slot 8, each slot having the same size, the DVD signal source device 3, the DVB signal source device 4 and The IP-TV signal source device 5 is respectively inserted into the first, second and third socket slots by means of a rectangular body or a box or a card, and there is no fixed positional relationship between them, because the playback device is provided Three signal source interfaces with the same specifications. The specifications here refer not only to the same layout of electrical signals, but also to the same size specifications of the source device and the physical size of the socket.

In order to realize the convenience and expansion flexibility of the connection between the source device and the playback device, the interface between the source device 3 and the playback device 1 is based on HD ("High Definition Multimedia Interface") or DVK Digital Portal, "Digital Video Interface "Abbreviation".

The HDMI interface was proposed by Toshiba and other companies, and the interface specification has been published on the WWW.HDMI.ORG website. It regulates and adds signals such as power, analog audio, analog video, serial communication, etc., so that the signal source device and the playback device can interact with each other. Through the interface unit connection, the signal source device of the present invention is powered by the playback device and controlled by the remote control system of the playback device in a "one-line" manner of the conventional HDMI. The interface method of the signal source and the playback device of the present invention is specifically to specify the audio and video digital output standard of the signal source device by using the HDMI standard, and to specify the input interface of the television as the playback device, and then connect in the form of a slot. And a fixed signal source device such as the above-described DVD signal source device 3, DVB signal source device 4, and IP-TV signal source device 5. As described above, the signal source interface device used in the present invention can also provide power to the signal source device or the signal source module through the signal source interface device because the power source information terminal includes the power information terminal, and at the same time, each signal source device and the playback device A control information contact mechanism has been established to work in a coordinated manner. The signal source interface device of the present invention is summarized to include at least a power information terminal, a control information terminal, and an A/V audio/video signal terminal for electrically connecting to corresponding terminals of the signal source device.

The DVI interface is proposed by Intel, Silicon Image, Compaq, Fujitsu Limited, Hewlett-Packard Company, IBM. NEC, etc. to standardize and add signals such as power, analog audio, analog video, serial communication, etc., so that the signal source device and the playback device They can be connected to each other through this interface. The interface device is used to standardize the audio and video digital output standard of the signal source device by using the DVI interface standard, and standardizes the input interface of the television as the playback device, and then connects the signal source device in the form of a slot. Fixed to the back of the playback device. Since different signal source devices are separately modularized, the signal source interface specification of the present invention cooperates with the playback device, so that the design standardization of the playback device of the high-definition digital television and the modularization of the digital signal source are organically combined. To achieve the convenience and expansion flexibility of the connection between the source device and the playback device.

In the block diagram of the playback device in the interface method and apparatus of the present invention shown in FIG. 1, a multi-channel reception processing unit 10, a video processor 11 and an audio processor 13 respectively corresponding to the multi-channel reception processing unit 10, respectively The display unit 12 and the audio unit 14 connected to the output ports of the video processor 11 and the audio processor 13 further include a central control unit 15 connected to the multi-channel reception processing unit 10, and a remote control receiving unit 17 connected to the central control unit 15. And a keypad input unit 16, further comprising one or more signal source interface units 18 for interfacing with the source device, coupled to the multi-channel receive processing unit 10, the central control unit 15, as previously described, the source The interface unit 18' includes at least a power information terminal, a control information terminal, and an A/V audio/video signal terminal for electrically connecting with corresponding terminals of the signal source device.

In the block diagram illustrating the present invention, signal source devices include, but are not limited to, analog program receiving devices, digital broadcast (DVB) receiving devices, digital broadcast program source (DVD) devices, and two-way network video on demand (IP-TV). Various standard sources such as devices or DVRs (Digital Video Recorders). In the information processing part of the figure, a master chip MCU51 in the playback device establishes contact between the digital TV and each module, unified scheduling control, accepts remote control commands, controls playback of the playback device and each module, power supply switch, working state coordination, etc. jobs. The output portion of the figure is such that each module directly outputs the uncompressed digital audio and video signal to the playback device through the signal source interface unit 10 for conversion, and outputs it to the display screen 12 and the speaker 14. Using the logic diagram in Figure 4, the product can be implemented with richer and more comprehensive features:

a) Digital broadcast signals transmitted by DVB-C or satellite DVB-S can be viewed through DVB; b) Current popular audio and video signals can be played through traditional storage media such as optical discs, memory cards, and the like. c) Interactive or interactive information playback via INTERNET.

d) It is possible to play analog TV signals.

e) Reserved for future new function modules.

3 is a schematic diagram of a 31-pin connector used in the interface method and device of the present invention. Implementing the signal In the modular embedded design of the source device, a signal source interface is used to define some power signals, control information, and A/V audio and video information, as well as some alternate information for later upgrade and expansion. Through this interface, high-definition digital audio/video signals can be transmitted between the source device and the playback device. In terms of audio, it supports compressed and uncompressed digital signals (DTS, THX, DOLBY DIGITAL, etc.), supports a variety of sampling rates (32K-196K), and can achieve high CD sound quality. In terms of video, it supports extremely high-definition pictures. There are a variety of high-definition pixel outputs (currently up to 1920*1080P), making it easy to get beautiful and clear video effects.

In terms of transmission control, the interface also has complete transmission control information, and has a very complete and powerful protocol specification.

The interface supports hot plugging (plug and play).

The signal source interface is a hybrid digital audio and video interface. The standard digital audio and video transmission is fully compliant with the international standard HDMI. The HDMI standard will soon become the mandatory standard configuration for digital high-definition TV. In the future, new product solutions must be added. International standards, such audio and video output has been standardized. For convenience, the handshake signal between the host and each modular extension is added, and the power supply is provided, and some port lines are reserved for the module of the new product. This interface is the only physical connection between the extension and the host. It is gold-plated with solid copper, plus nickel-plated steel. It is equipped with locking screw fixing device to ensure precise and accurate joint, large contact surface and low impedance. Antioxidant, corrosion resistant, anti-aging, and long-term stable and reliable. The specific details of each terminal are as follows:

In Figure 3, if the HDMI interface standard is adopted, the pin 1 of the connector provides the power supply terminal of each module for the player. The design capability is DC12V/5A, which is 60W load capacity, which is enough for the general function module to work. The specific description of each pin is as follows:

1+2 DC12V - The host provides power to any module

3+4 POWER- GND

In Figure 5, a total of 19 terminals from 5 to 21 are used as standard HDMI interfaces, specifically:

5 TMDS Data 2+

6 TMDS data 2 shielded

7 TMDS Data 2 -

8 TMDS data 1+ 9 TMDS Data 1 Shielded

10 TMDS Data 1 -

11 TMDS data 0+

12 TMDS data '0 shielded

13 TMDS Data 0 -

14 TMDS Clock +

15 TMDS Clock Mask

16 TMDS Clock -

17 CEC - Electronic Consumption Control

18 Reserved (NC on device)

19 SCL one HDMI transceiver chip serial communication clock

20 SYS-SDA transceiver chip serial communication data

21 SYS-CLK transceiver chip serial communication clock

22 AGND audio ground

23 Audio_L analog audio left or module analog sound output to the player (optional)

24 AUDIO-R audio right signal

25 VGND analog video ground

26 Y-component video brightness

27 U—Component Video Color Difference 1

28 V—Component Video Color Difference 2

29 DC12V/5A power supply

30 POWER- GND power ground

31 SHIELD— GND

The digital video standards that the above-mentioned signal source interface unit can support include: 24-bit RGB, 4:4:4; 2) 24-bit YCbCr, 4:4:4; and 3) 16/20/24-bit YCbCr, 4:2:2. The digital audio standards that the above-described signal source interface unit of the present invention can support include: 1) compressed digital audio (Dolby Digital, THX, DTS, etc.), and any audio format that can be transmitted through S/PDIF; 2) uncompressed digital Audio, including: 2/6/8 channels, 32-192kHz sample rate supported by DVD audio (HDMI Version 11), supported SACD (HDMI†.2 version), and ^E in evaluation of DTS-HD, Dolby Digital+, MLP, etc.

In Figure 3, if the DVI interface standard is adopted, the pins 1 and 31 of the plug-in and the connector are power connection terminals, including a power supply terminal that supplies a +12V or +5V power supply from the playback device and a power shielding terminal that also serves as a terminal for the outer casing. The specific description of each pin is as follows:

1. +12V (or 5V, provided by the playback device)

31. POWER-GND (and shell)

In the figure, pins 2 to 21 are the wiring terminals used in the DVI interface standard, including the 6-channel connection terminal of TMDS data, the TMDS data mask terminal shared by each channel, the DDC connection terminal, the TMDS clock signal connection terminal, and the synchronization signal connection terminal. Used to transmit digital signals. The specific details of each pin are as follows:

2. TMDS Data GM)

3. TMDS Data D2 -

4. TMDS data D2+

5. TMDS Data D4-

6. TMDS Data D4+

7. DDC clock line

8. DDC data line

9. TMDS Data D1-

10. TMDS Data D1+

11. TMDS Data D3-

12 TMDS Data D3+

13. Hot plug detection terminal

14. TMDS Data D0-

15. TMDS Data D0+

16. TMDS Data D5-

17. TMDS Data D5+

18. TMDS CL + 19. TMDS CLK-

20. H. SYNC

21. V. SYNC

The other pins are audio and video connections and other connection terminals, which are mainly used to transmit analog signals. The specific description of each pin is as follows:

22. Simulated red primary color R

23. Simulated green primary color G

24. Simulated blue primary color B

25. Analog Video Ground VGND

26. Audio left AUDI0_L

27. Audio Right AUDI0—R

28. Audio Ground AGND

29. RXD

30. TXD

In the above interface device, if each terminal of the video connection is used to transmit a YUV analog video signal, the above part of the pin can be modified as follows:

2. Power shield POWER GND

20. Reserved READY

21. TMDS Data GND

22. Y-component video brightness.

23. U-component video color difference 1

24. V—Component Video Color Difference 2

31. Shell ground

Thus, the interface device of the present invention is disposed between the signal source and the playback device to support various digital audio/video signal transmissions, as well as existing ubiquitous analog audio/video signal transmissions.

In the connection diagram of the signal source device and the signal source interface unit shown in FIG. 4, pins 1-19 of the signal source interface are used to connect TMDS (short for "Transition Minimized Differential Signalling"), DDC ("display data channel") Abbreviation) and CEC (short for "Consumer Electronics Control"); Among them, TMDS has 3 channels (respective signals for audio and video respectively) and a clock signal. Pins 20 and 21 of the signal source interface are used to connect SYS-SDA and SYS-CLK; 22-24 feet of signal source interface The AGMX AUDIO-L and AUDIO-R are used to connect the audio part respectively; the 25-28 pins of the signal source interface are used to connect the YGND, Y, U, V of the video part; The 29 pin of the signal source interface is used to connect the DC12V/5A ; 30 of the signal source interface is used to connect to POWER-GND; 31 of the signal source interface is used to connect SHIELD-GND of the housing.

In the connection diagram of the playback device and the signal source interface unit in the present invention shown in FIG. 5, similarly, the signal source interface 30 is used to connect the 1-19 pins of the signal source interface for connecting TMDS, DDC and CEC ( Select); 20, 21 pins of signal source interface are used to connect SYS-SDA and SYS-CLK; 22-24 pins of signal source interface are used to connect AGND, AUDIO-L and AUDIO-R of audio part respectively; The 25-28 pin is used to connect the YGND, Y, U, V of the video signal part; the 29 pin of the signal source interface is used to connect the DC12V/5A; the signal source interface 30 is used to connect the POWER-GND; Used to connect the housing SHIELD-GND.

Figure 6 is a schematic diagram of a remote controller used by a playback device. The remote control is a pressure-sensitive touch screen that uses the supplied stylus to select a menu operation (referred to as a smart remote). The single remote control of the entire system is easy to operate. The traditional use mode is that the host and each function extension are equipped with a remote controller, which is inconvenient to use. Module building type Because the integration and unified coordination of the host and each module is a common body, the relationship between each module and the host is no longer as loose as the separate connection, and its internal connection is established under a unified patent interface. The protocol specification controls are not as simple as physical connections. After the communication between the host and the module is established, the use of a single remote control to control the entire system becomes a very easy task. The remote has a (SOURCE) button that allows you to select a different digital source for TV - "DVD - " DVB - " IP- TV. In response to the respective characteristics of each function module, the remote control display automatically changes the function menu display content with the specific module that needs to be controlled.

For example, when the DVD module function is selected, Figure 6 functions. Touch the "power" button located at the top left corner of Figure 6. The system will only turn on the power of the DVD source device, and the playback device will only receive the DVD at this time. The digital audio and video signals of the player are input, and the power of other modules remains off. In order to realize the above functions, the sequence code value of the remote controller is: device number + function key value; when the remote device cuts into different operation modes, the system code value of the remote control code is different, representing different manipulation objects, such as: 0x55AA0001 indicates that the DVD's power button 0x55AA indicates that the device is a DVD.

0x35280001 indicates that the power key of DVB 0x3528 indicates that the device is DVB

0x28390001 indicates the IP-TV power button 0x2839 indicates that the device is DVB

When the infrared head of the remote control receiving unit receives the smart remote control code, the MCU decodes the device number and the function key value, and the MCU performs necessary preparations according to the entire system state condition, such as when the DVD is first opened: the TV is The normal viewing state is switched to the AV-IN state, the DVD power relay switch is turned on, the relevant analog input electronic switch is switched to the DVD group, and the power-on command is sent to the DVD module through SYS-CLK, SYS-DAT, waiting for the DVD to be ready.

Claims

Rights request

A method of interfacing between a signal source and a playback device, comprising the steps of: - providing a plug-in for sizing each other on a housing of each of the source devices, a terminal of the plug-in and a signal source within the housing a circuit connection of the device; one or more slots respectively disposed in the casing of the signal source device are disposed on the casing of the audio/video playback device; and each of the slots is provided with the signal source device The upper insert engages the connected connector, and the connector is connected to the circuit in the casing; the following connection is made between the signal source device plug-in and the playback device connector: HDMI connection or DVI connection, power connection The sound signal is connected, the image signal is wired, the serial communication connection and the outer casing are shielded, so that each signal source device inserted in the connector of the playback device is powered by the playback device and communicates with the playback device.

2. The interface method of the signal source and the playback device according to claim 1, wherein the HDMI connection comprises a TMDS, a DDC, and a CEC connection terminal, and the audio communication line includes an audio ground, a right audio, and a left audio. The terminal, the image signal connection includes a video ground, 丫, U, and V terminals; the DVI connection includes a TMDS data, a DDC, a clock signal, and a synchronization signal connection terminal, and the sound connection includes an audio ground, a left audio, and a right audio. The terminal, the image signal connection includes R, G, and B terminals of the video and a video ground terminal.

The interface method between the signal source and the playback device according to claim 2, wherein after the playback device receives the remote control signal, the following steps are performed: determining which source device is powered according to the device code; The power connection powers the selected signal source and controls the signal source device through the serial communication connection according to the remote command code, and the signal source device sends a digital sound/image signal to the playback device through the HDMI connection, or passes the sound. Signal wiring and image signal connections provide sound/image signals to the playback device.

4. An interface device between a signal source and a playback device, comprising a signal source device and a playback device, wherein the outer casing of the signal source device is provided with a plug-in, and the terminal of the plug-in is connected to the circuit of the signal source device in the casing; One or more slots respectively disposed in one of the signal source devices are disposed on the casing of the playback device, and a connector engageable with the plug-in of the signal source device is disposed in each slot, and the connection is Between the plug-in and the playback device circuit and between the connector and the plug-in Connect: HDMI cable or DVI cable, power cable, audio signal cable, image signal cable, serial communication cable and housing shield connection, so that each signal source device plugged into the playback device connector The playback device is powered and communicates with the playback device.

5. The interface device between the signal source and the playback device according to claim 4, wherein the HDMI cable comprises a TMDS, a DDC, and a CEC connection terminal, and the sound signal connection includes an audio ground, a right audio, and a left audio. The terminal, the image signal connection includes video Y, U and V terminals; the DVI connection includes TMDS data, DDC:, a clock signal and a synchronization signal connection terminal, and the sound connection includes an audio ground, a left audio, and a right audio. The terminal, the image signal connection includes R, G, and B terminals of the video and a video ground terminal.

The interface device between the signal source and the playback device according to claim 4 or 5, wherein after receiving the remote control signal, the playback device determines which source device is powered according to the device code; The power supply connection supplies power to the selected signal source and controls the signal source device according to the remote control command code through the serial communication connection, and the signal source device sends the digital audio/video signal to the playback device through the HDMI connection and the DVI connection. Or provide an audio/video signal to the playback device through a sound signal connection and an image signal connection.

7. The interface device between the signal source and the playback device according to claim 6, wherein the signal source device is an analog television festival, a DVD digital broadcast program, a DVB digital broadcast or an IPTV two-way network video on demand device. ,

8. The interface device between the signal source and the playback device according to claim 6, wherein the playback device further comprises a remote control receiving unit.

9. The interface device between the signal source and the playback device according to claim 8, further comprising a remote controller for transmitting the signal to the remote control receiving unit, wherein the code value sequence transmitted by the remote controller is composed of a signal The source device's device number + function key value is composed.

10. The interface device between the signal source and the playback device according to claim 4, wherein the HDMI connection, the power connection, the sound signal connection, the image signal connection, the serial communication connection, and the outer casing The shield connection includes the following 31 leads or terminals: DC12V for pins 1 and 2, POWER-GND for pins 3 and 4, TMDS data 2+ for 5 pins, TMDS data 2 for 6 pins, TMDS data for 7 pins 2-, 8-pin TMDS data 1+, 9-pin TMDS data 1 mask, 10-pin TMDS data 1 -, 11-pin TMDS data 0+, 12-pin TMDS data 0 mask, 13-pin TMDS data 0+, 14-pin TMDS data 0+, 15-pin TMDS clock mask, 16-pin TMDS clock-, 17-pin CEC , 18-pin NC, 19-pin SCL, 20-pin SYS-SDA, 21-pin SYS-CLK, 22-pin AGND, 23-pin AUDIO-L, 24-pin AUDIO-R, 25-pin YGNDL, 26 Foot Y, 27-pin U, 28-pin V, 29-pin DC12V/5A, 30-pin POWER-GND and 31-pin housing SHIELD-GND;

The DVI connection, power connection, audio signal connection, image signal connection, serial communication connection and housing shield connection include the following 31 leads or terminals: 1 pin +12V power supply, 2 pin DGND, 3-pin TMDS data D2-, 4-pin TMDS data D2+, 5-pin TMDS data D4-, 6-pin TMDS data D4+, 7-pin DDC clock, 8-pin DDC data, 9-pin TMDS data Dl-, 10 pin TMDS data Dl+, 11 pin TMDS data D3-, 12 pin TMDS data D3+, 13 pin hot plug detection, 14 pin TMDS data DO-, 15 pin TMDS data D0+, 16 pin TMDS data D5_, 17-pin TMDS data D5+, 18-pin TMDS data CLK+, 19-pin TMDS data CLK-, 20-pin line sync H. SYNC, 21-pin field sync V. SYNC, 22-pin R, 23-pin G, 24 pin B, '25 pin VGND, 26 pin AUDIO-L, 27 pin AUDIO-R, 28 pin AGND, 29 pin RXD, 30 pin TXD, 31 pin PGND.