CN218888576U - Television mainboard and television - Google Patents

Abstract

Provided are a television main board and a television. The mainboard of the TV set includes a digital tuner; a set-top box chip, including: a conditional access CA module connected with the digital tuner; and an audio decoder and a video decoder, connected with the conditional access CA module; a TV connected with the set-top box chip Machine chips, including audio and video output and drive modules; wherein the audio and video output and drive modules are connected to the audio decoder and video decoder in the set-top box chip, and connected to the TV display outside the TV motherboard, wherein the set-top box The chip and the TV chip are on the same TV motherboard. In this way, it is possible to put a TV main board into the TV when manufacturing the TV, so that the user can watch scrambled and encrypted pay TV programs only by purchasing a TV, which reduces the overall cost paid by the user and promotes the user's interest in the TV. The desire to buy a television set loaded with such a television mainboard has brought great commercial benefits.

Description

TV motherboard and TV

technical field

The present application relates to television technology, and more specifically relates to a television main board and a television.

Background technique

Current television sets are implemented by adding a set-top box to the television set for digital television reception. Traditional set-top boxes and televisions are set-top boxes that are sold separately. A set-top box is a device that connects the television to an external signal source. It can decode the compressed digital signal into TV content and display it on the TV connected to it. Signals for set-top boxes can come from cable, satellite dishes, broadband networks, and terrestrial broadcasts. The content received by the set-top box includes images and sounds that can be provided by analog TV, and also includes data content, such as electronic program guides, Internet pages, subtitles, and so on. Users can watch the digital TV programs received and decoded by the set-top box on the existing TV connected with the set-top box through the set-top box purchased separately, and can connect to the network through the set-top box for interactive entertainment, education and some commercial activities.

Traditionally, the set-top box has a video decoding module, and the TV also has a video decoding module. Some content is decoded by the set-top box so as to be transmitted to the TV for display, and some content is decoded by the TV to be displayed and played by the TV. The set-top box can receive the infrared signal of the remote control of the set-top box to turn on and change channels, and the TV also receives the infrared signal of the remote control of the TV to start up, adjust the volume, display, etc. The two hardwares need to work together to complete TV reception and display As well as the purpose of viewing, it is extremely inconvenient to operate, and the two pieces of hardware must be purchased separately, which is expensive to purchase and takes up space.

There is a need for television technology that reduces cost and improves user experience.

Utility model content

According to one aspect of the present application, there is provided a TV motherboard, including: a digital tuner; a set-top box chip, including: a conditional access CA module connected with the digital tuner; and an audio decoder and a video decoder, Be connected with described conditional access CA module; The television chip that is connected with described set-top box chip includes audio frequency and video output and driver module; Wherein the audio frequency and video output and driver module are connected with the audio frequency decoder in the described set-top box chip It is connected with a video decoder and connected with a TV display outside the main board of the TV, wherein the set-top box chip and the TV chip are located on the same main board of the TV.

According to another aspect of the present application, there is provided a TV, including: a TV display; and the main board of the TV according to various embodiments of the present application.

In this way, through various embodiments of the present application, it is possible to put a TV main board according to the embodiment of the present application into the TV when manufacturing the TV, that is, it is possible for the user to watch scrambled and encrypted payment only by purchasing a TV. TV programs, without the need for users to separately purchase both TV sets and set-top boxes to watch scrambled and encrypted pay TV programs, reducing the overall cost paid by users, and promoting the purchase of TV sets loaded with such TV motherboards Desire has brought great commercial benefits.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

FIG. 1 is a block diagram showing the structures of a conventional set-top box and a television.

Fig. 2 shows a block diagram of a TV main board according to an embodiment of the present application.

Fig. 3 shows a block diagram of a TV main board according to another embodiment of the present application.

Fig. 4 shows a block diagram of a television set to which a mainboard of the television set according to an embodiment of the present application is applied.

Detailed ways

Reference will now be made in detail to specific embodiments of the present application, examples of which are illustrated in the accompanying drawings. While the present application will be described in conjunction with specific embodiments, it will be understood that it is not intended to limit the application to the described embodiments. On the contrary, it is intended to cover alterations, modifications and equivalents as included within the spirit and scope of the application as defined by the appended claims. It should be noted that any functional block or arrangement of functions may be realized as physical or logical entities, or a combination of both.

FIG. 1 is a block diagram showing the structures of a conventional set-top box and a television.

As shown in Figure 1, traditionally, users need to purchase two devices: a TV and a set-top box, and place the set-top box independently outside the TV, and both devices must receive power through a power input, such as 220V input.

TV sets and set-top boxes each have their own motherboards: TV motherboards, set-top box motherboards. The main board of the TV set and the main board of the set-top box have their own audio decoder and video decoder respectively. The TV receives the analog TV ATV signal through the analog TV (AnalogTelevision, ATV) antenna, and uses the audio decoder and video decoder in the main board of the TV To decode the analog TV signal and output the decoded result to the monitor for display and playback. The set-top box receives digital satellite TV signal DVB-S and/or digital terrestrial TV signal (Digital Video Broadcasting–Terrestrial, DVB-T) antenna through a digital satellite TV signal (Digital satellite TV system, DVB-S) antenna and/or a digital terrestrial TV signal (Digital Video Broadcasting–Terrestrial, DVB-T) antenna The DVB-T signal is converted into these two digital signals through the DVB-T digital tuner and the DVB-S digital tuner, and is descrambled and decrypted by the Conditional Access (CA) module in the main board of the set-top box. Use the audio decoder and video decoder in the set-top box motherboard to decode the two signals and transmit the decoded result to the TV through the high-definition multimedia output interface (High Definition Multimedia Interface, HDMI) line connected between the set-top box and the TV. The display is used for display and playback, so that the user can watch the scrambled and encrypted paid TV programs.

In addition, both of them need their own infrared (Infrared Radiation, IR) remote controllers to transmit and control infrared commands to the TV set and the set-top box respectively.

Only audio and video signals are transmitted between the set-top box and the TV through HDMI terminals, audio and video (Audio Video, AV) terminals, independent video terminals (S-Video or S-terminals) and/or audio terminals, etc., without other communication .

The set-top box and the TV set have to be purchased separately, and the purchase cost is relatively high. The set-top box and the TV set require two remote controls to operate, which is extremely inconvenient to operate, and the set-top box and the TV set are placed in two spaces respectively, which takes up space. If the main board of the set-top box and the main board of the TV are simply connected together, the area of the circuit connected together will be large, the function will be redundant, and the cost will not be reduced much.

This application integrates the set-top box chip and the TV chip into a TV motherboard through a series of technologies, so that the TV motherboard can be built into the TV, that is, the set-top box and the TV can be obtained when only the TV is purchased. The functions of the two realize a low-cost and high-commercial-value solution that can watch scrambled and encrypted pay-per-view TV programs by purchasing only one TV set, and can also reduce the circuit area and the cost of the chip itself.

Specifically, FIG. 2 shows a block diagram of a TV main board 200 according to an embodiment of the present application.

As shown in Figure 2, TV mainboard 200 comprises: digital tuner 201; Set-top box chip 210, comprises: the conditional access CA module 213 that is connected with digital tuner 201; With audio frequency decoder 211 and video decoder 212, Be connected with conditional access CA module 213; The television chip 220 that is connected with set-top box chip 210 includes audio frequency and video output and driver module 221; The video decoder 212 is connected to the TV display 202 outside the TV main board 200 . The set-top box chip 210 and the TV chip 220 are located on the same TV motherboard 200 .

A digital tuner is a device used by a TV to receive high-frequency signals and demodulate video information. Digital high-frequency tuner, also known as digital high-frequency tuner, can receive digital TV high-frequency signals through the antenna, and perform channel selection, high-frequency signal amplification and frequency conversion processing. Its internal circuit includes an amplifier circuit and a frequency conversion circuit, that is, to amplify the received high-frequency signal, and then reduce the frequency to an intermediate frequency signal. The function of the high frequency head is mainly to amplify the weak video signal, and to deal with the image deformation and interference caused by the unstable transmission.

The digital TV high-frequency signal received through the antenna is directly or indirectly (eg, through a demodulator, demultiplexer, etc.) sent to the conditional access CA module 213 in the set-top box chip 210 through the digital tuner 201 . The conditional access CA module ensures that the authorized user (who has already paid the relevant fees) can receive the TV programs and other services he has ordered, and the unauthorized users cannot watch pay TV programs or use related services.

The audio decoder 211 in the set-top box chip 210 can decode the audio part in the video signal descrambled and decrypted from the conditional access CA module 213, so that the original audio is decoded, and the video decoder 212 in the set-top box chip 210 can receive the The video part in the video signal is decoded in order to decode the original video.

The decoded original audio and original video are sent to the audio and video output and driving module 221 on the TV chip 220 . The audio and video output and driving module 221 outputs the decoded original audio and original video to the TV display 202 to drive the TV display 202 to display and play.

In this way, the conditional access CA module, the audio and video decoder and the audio and video output interface of the TV chip integrated on the same TV main board can make a TV main board according to the embodiment of the present application be inserted into the TV main board when manufacturing the TV. The TV set enables users to watch scrambled and encrypted pay TV programs only by purchasing a TV set, without the need for users to separately purchase both a TV set and a set-top box to watch scrambled and encrypted pay TV programs. Also do not need or can remove the audio and video decoding module on the original TV chip, or do not need to use the existing audio and video decoding module on the TV chip, just can realize the TV program that plays the antenna signal received from the tuner Audio and video can reduce the purchase cost of TV chips, and the TV chip can only be used as a channel to output the audio and video decoded by the set-top box, and the audio and video will be descrambled, decrypted and decoded by the TV program received by the antenna and tuner Output to the TV monitor to play TV programs, thereby reducing the overall cost paid by the user, promoting the user's desire to buy a TV loaded with this TV motherboard, bringing great commercial benefits, and can also reduce the circuit area and reduce the cost of the chip itself.

Note that the "connection" mentioned herein may include direct connection or indirect connection, that is, connection through one or more other devices, and may even include wireless connection. In other words, as long as there is data or signal transmission between the two, the two can be considered to be "connected".

Here, the TV set can be an analog TV, a digital TV, a smart TV, an Internet TV, and so on. There is no limitation to the television set here.

Of course, other circuit modules can also be set on a TV main board, and these circuit modules will be described in detail below in conjunction with Fig. 3, but note that Fig. 3 is only an embodiment, not a limitation. Circuit modules can be added or deleted as required.

FIG. 3 shows a block diagram of a TV main board 300 according to another embodiment of the present application.

As shown in Figure 3, TV main board 300 comprises digital tuner 303 and/or 304 at least; Set-top box chip 310, comprises: the conditional access CA module 314 that is connected with digital tuner 303 and/or 304; And audio decoding Device 316 and video decoder 315 are connected with conditional access CA module 314; the TV chip 330 connected with set-top box chip 310 includes audio and video output and driver module 331; wherein audio and video output and driver module 331 and set-top box chip The audio decoder 316 in 310 is connected to the video decoder 315 , and is connected to the TV display 306 outside the TV motherboard 300 . The STB chip 310 and the TV chip 330 are located on the same TV motherboard 300 .

The digital tuner receives digital TV high-frequency signals through antennas (such as DVB-S/S2 antenna 301 and/or DVB-T/T2 antenna 302 as shown in Figure 3), and performs channel selection and high-frequency signal amplification and frequency conversion The processing is then sent directly or indirectly (eg, via a demodulator, demultiplexer, etc.) to the conditional access CA module 314 .

Conditional Access CA Module is a media protection term used by the broadcast television industry. This technology guarantees that the authorized user (who has already paid the relevant fees) can receive the TV programs and other services he has subscribed to, while the unauthorized users cannot watch pay TV programs or use related services. Television signals or other data are scrambled at the transmitter and then distributed to various forms of broadcast networks.

In one embodiment, the conditional access CA module 314 includes at least a descrambler 3141 and a descrambler 3142 .

Methods to prevent reception by unauthorized users are scrambling and/or encryption of the program and reception control. The conditional access CA module at the TV signal receiving end usually includes at least a descrambler and/or decryptor, which only provides the authorized user with the key required for content descrambling and/or decryption, and the descrambler and/or decryptor can use the key key to descramble and/or decrypt received scrambled and/or encrypted digital television signals. The key generally uses a smart card or related technologies to prevent illegal theft of the key. CA technical requirements can not only protect the rights of users to freely choose to watch programs, but also protect the interests of broadcasters and program providers.

That is to say, the usual conditional access technology mainly consists of three major technologies: scrambling and descrambling technology, addressing technology and encryption and decryption technology. Scrambling technology means that the conditional access system controls or changes some parameters of the transmitted services (scrambling) at the sending end, making these services useless to unauthorized users; descrambling technology restores the scrambled signal to the original signal. Addressing technology refers to providing "descrambling-related information" only to authorized users, and authorized users can use their information to descramble the signal with a descrambler. Encryption and decryption technology refers to the encryption of "de-scrambling-related information" and related processes provided to authorized users to prevent leakage.

In this way, by adding the conditional access CA module 314 on the main board of the TV, it is possible to put a main board of the TV according to the embodiment of the present application into the TV when manufacturing the TV, that is, the user can watch the scrambled TV only by purchasing the TV. and encrypted pay TV programs, without the need for users to separately purchase both TV sets and set-top boxes to watch scrambled and encrypted pay TV programs, which reduces the overall cost paid by users and promotes users to load this TV main board The desire to buy TV sets has brought great commercial benefits, and can also reduce the circuit area and reduce the cost of the chip itself.

The audio decoder 316 in the set-top box chip 310 can decode the audio part in the descrambling and decrypted video signal received from the conditional access CA module 314, so that the original audio is decoded, and the video decoder 316 in the set-top box chip 310 can The video part in the received video signal is decoded so as to decode the original video.

Note that 2 digital tuners are shown in Fig. 3, but the application is not limited thereto, in fact, 1, 3 or other numbers of various digital tuners can be arranged, depending on how many and What kind of TV signal. Of course, the more the number of digital tuners, the more TV signals can be received at the same time, and the compatibility of the TV mainboard to various TV signals is also better, and the compatibility of the TV installed with the TV mainboard is also better. good.

The decoded original audio and original video (can pass through the HDMI output interface 319 on the set-top box chip 310 and the HDMI input interface 332 on the TV chip 330) are delivered to the audio and video output and driver module 331 on the TV chip 330. The audio and video output and driving module 331 outputs the decoded original audio and original video to the TV display 306 to drive the TV display 306 to display and play.

In this way, the conditional access CA module, the audio and video decoder and the audio and video output interface of the TV chip integrated on the same TV main board can make a TV main board according to the embodiment of the present application be inserted into the TV main board when manufacturing the TV. The TV set enables users to watch scrambled and encrypted pay TV programs only by purchasing a TV set, without the need for users to separately purchase both a TV set and a set-top box to watch scrambled and encrypted pay TV programs. Also do not need or can remove the audio and video decoding module on the original TV chip, or do not need to use the existing audio and video decoding module on the TV chip, just can realize the TV program that plays the antenna signal received from the tuner Audio and video can reduce the purchase cost of TV chips, and the TV chip can only be used as a channel to output the audio and video decoded by the set-top box, and the audio and video will be descrambled, decrypted and decoded by the TV program received by the antenna and tuner Output to the TV monitor to play TV programs, thereby reducing the overall cost paid by the user, promoting the user's desire to buy a TV loaded with this TV motherboard, bringing great commercial benefits, and can also reduce the circuit area and reduce the cost of the chip itself.

In one embodiment, the digital tuner may include a DVB-S digital tuner 303 for digital satellite television signals and a DVB-T digital tuner 304 for digital terrestrial television signals. But the present application is not limited thereto. In fact, one, three or other numbers of various digital tuners, such as DVB-T digital tuners, etc. can be arranged, depending on how many and what kind of TV signals need to be received.

DVB (Digital Video Broadcasting, Digital Video Broadcasting) is a mature European digital video broadcasting standard set, including DVB-S, DVB-C, and DVB-T, which are used for satellite, cable TV, and terrestrial broadcasting respectively. It has been approved by ETS (European Telecom Standard) and ITU (International Telecommunications Union) approval. In our country, DVB-S has become the standard of digital satellite TV broadcasting, and many provincial digital compressed TV programs have adopted this standard. The DVB-S standard describes the frame structure, channel coding and modulation methods for satellite digital TV multiplex transmission in the fixed satellite service (FSS) and broadcast satellite service (BSS) bands. The DVB-S system defines the equipment function module for adapting the baseband signal from the MPEG-2 (Moving Picture Experts Group-2 (Moving Picture Experts Group-2)) multiplexer output to the radio frequency channel.

In this embodiment, the DVB-T antenna (DVB-T/T2) of the digital terrestrial television broadcasting system can receive terrestrial television signals through the Yagi antenna, and the DVB-S antenna (DVB-S/S2) of the digital satellite television system can pass through the satellite Pot receiver, etc., to receive satellite TV signals.

In addition, the digital tuner of the present application may also include television signal tuners that may appear and develop in the future, and these existing and future digital tuners are also included in the scope of protection of the present application.

In one embodiment, the set-top box chip 310 may also include: a DVB-S demodulator 311 and a DVB-T demodulator 312, respectively connected to the digital satellite TV signal DVB-S digital tuner 303 and the digital terrestrial TV signal DVB- T digital tuner 304 is connected; demultiplexer 313 is connected with DVB-S demodulator 311 and DVB-T demodulator 312 and conditional access CA module 314 .

In this way, the digital tuner 303 and/or 304 receive digital TV high-frequency signals (for example, digital satellite TV signal and/or digital terrestrial TV signal), and carry out channel selection and high-frequency signal amplification and frequency conversion processing, then the digital intermediate frequency (IntermediateFrequency, IF) signal obtained is sent to DVB-S demodulator 311 and DVB-T demodulation 312 to respectively perform demodulation to obtain respective transport streams (Transport Stream, TS).

These transport streams are sent to the demultiplexer 313 for demultiplexing. Because the transport stream received by the digital television receiver is a single data stream synthesized by multiple channel data, the demultiplexer 313 at the receiving end needs to demultiplex the synthesized transport stream to filter out the audio and audio of the currently selected channel. content such as videos. Currently, the demultiplexing of transport streams can be done by a demultiplexer. The demultiplexer is responsible for filtering out the transport stream of the current channel from the synthesized transport stream. The transport stream of the current channel is usually a scrambled transport stream. Therefore, it needs to be sent to the conditional access CA module 314 and descrambled by the descrambler 3141. Scramble and use the decryptor 3142 to decrypt, thereby filtering out the encoded signals of the audio and video of the current channel.

Then, the descrambled and decrypted audio and video coded signals obtained by the conditional access CA module 314 are decoded by the audio decoder 316 and the video decoder 315 respectively. Because at the sending end, the encoder encodes the analog TV signal into an encoded digital signal of audio and video that can be transmitted over the air according to a specific compression standard. The encoding method can include MPEG-2, MPEG-4, etc. This is not a limitation. In fact, the encoding method can also use H.264, AVS (AudioVideo coding Standard, audio and video coding standard), etc., and possible encoding methods in the future . On the other hand, the audio decoder 316 and the video decoder 315 at the receiving end can restore the encoded digital signal to a decoded audio signal and video signal through a corresponding decoding method.

In one embodiment, the STB chip 310 can also include: an audio processor 318, connected to the audio decoder 316; a video processor 317, connected to the video decoder 315; an output interface 319, connected to the audio processor 318 and the video processor device 317 and the input interface 332 on the TV chip 330.

The audio processor 318 can convert the decoded audio signal into an audio encoding format that conforms to the output interface specification (in this example, it is a high-definition multimedia interface HDMI, but this interface is not a limitation, and other interfaces or interfaces developed in the future can also be used), such as , what resolution, what refresh rate, etc. The video processor 317 can convert the decoded video signal into a video coding format conforming to the output interface specification (HDMI in this example), for example, what resolution, what refresh rate and so on.

Note that, in this example, the output interface 319 and the input interface 332 here can be connected through a cable capable of transmitting HDMI signals on the TV mainboard 300 .

Like this, after the audio signal and the video signal processed by the audio processor 318 and the video processor 317 are respectively processed by the audio processor 318 and the video processor 317, they pass through the output interface 319 on the set-top box chip 310 (in this example, a high-definition Multimedia interface HDMI) and the input interface 332 on the TV chip 330 connected to it (in this example, a high-definition multimedia interface HDMI).

The processed audio signal and video signal received by the input interface 332 on the TV chip 330 can be sent to the audio and video output and drive interface 331 to drive the TV display 306 to display and play. The TV display here may include a liquid crystal display, an LED (Light Emitting Diode, Light Emitting Diode) display, an OLED (Organic Light Emitting Semiconductor, Organic Electroluminescence Display) display, etc., and displays developed in the future.

In this way, through various embodiments of the present application, it is possible to put a TV main board according to the embodiment of the present application into the TV when manufacturing the TV, that is, it is possible for the user to watch scrambled and encrypted payment only by purchasing a TV. TV programs, without the need for users to separately purchase both TV sets and set-top boxes to watch scrambled and encrypted pay TV programs, reducing the overall cost paid by users, and promoting the purchase of TV sets loaded with such TV motherboards Desire has brought great commercial benefits, and can also reduce the circuit area and reduce the cost of the chip itself.

In addition, the application has also carried out all aspects of hardware deletion, circuit improvement and connection relationship improvement, so that the main board of this TV can realize the effects of reducing circuit area, reducing the cost of the chip itself, and making operation easier while maintaining functions.

In one embodiment, the TV chip 330 may include a remote control converter 335, and the remote control converter 335 is connected to the remote control receiver 307 on the TV chip 330 and connected to the remote control receiver 323 on the set-top box chip 310, wherein the remote control converter 335 The device 335 converts the remote control signal received by the remote control receiver 307 on the TV chip 330 into a remote control signal that the remote control receiver 323 on the set-top box chip 310 can interpret.

In this example, the remote control converter 335 can be implemented by a processor on the TV chip 330 , such as a central processing unit CPU. Of course, the implementation of the remote control converter 335 is not limited to this, and it can also be realized by using a dedicated remote control converter component. The remote control converter 335 can use any existing technology to convert the remote control signal received by the remote control receiver 307 on the TV chip 330 into a remote control signal that the remote control receiver 323 on the STB chip 310 can interpret. For example, when the information source is a set-top box information source, the remote control converter 335 can remotely control the television set through the correspondence between the television remote control command code value and the set-top box remote control command code value (such as a corresponding mapping table, a lookup table, and other correspondence). The code value of the remote control instruction sent by the device 305 and received by the remote control receiver 307 is converted into a corresponding set-top box remote control instruction code value, and the corresponding set-top box remote control instruction code value is sent to the remote control receiver on the set-top box chip 310 by means of a remote control signal 323, so as to manipulate the functions on the set-top box chip, such as changing channels, changing volume, selecting services, and so on. Certainly, when the signal source is a TV signal source, as in the prior art, the remote control signal received by the remote control receiver 307 on the TV chip 330 will manipulate the functions of the TV.

Note that the remote control signal here can be an infrared remote control signal, a Bluetooth remote control signal, a WiFi (Wireless Fidelity, Wireless Fidelity) remote control signal, etc., and there is no limitation here, as long as the signal can realize the remote control function. The remote control converter can be an infrared remote control signal converter, a Bluetooth remote control signal converter, a WiFi remote control signal converter, and the like. The remote control receiver can be an infrared remote control signal converter, a Bluetooth remote control signal converter, a WiFi remote control signal converter, and the like.

In one embodiment, the remote control converter communicates with the remote control receiver on the set top box chip through the remote control transmission interface on the TV chip and the set top box chip.

In this way, only one remote control, such as a TV remote control and an external remote control receiver, can operate the functions of both the TV set and the set-top box, saving a remote control, thereby further reducing costs and simplifying the user's work. Operation, avoiding the complicated operation of using two remote controls alone, making the user experience better. Moreover, on the TV main board, the two redundant remote control input interfaces of the original TV main board and the set-top box main board are changed into one remote control input interface, which only receives the remote control signal of the TV remote control, further saving related hardware costs.

In one embodiment, the TV chip 330 includes a TV processor (such as a TV central processing unit CPU) 335, and the set-top box chip 310 includes a set-top box processor (such as a set-top box central processing unit CPU) 321, wherein the TV processor 335 The TV chip 330 and the set-top box chip 310 communicate with the set-top box processor 321 through asynchronous serial communication protocol UART interfaces 334 and 320 .

There is no asynchronous serial port communication protocol UART interface between the traditional TV set and the set-top box, because there is no need for communication other than video signal transmission between the two, but according to the embodiment of the application, an asynchronous serial communication protocol is set on the TV chip and the set-top box chip The serial communication protocol UART interface enables communication and communication between the TV processor and the set-top box processor, which helps to achieve higher-level control between the TV processor and the set-top box processor, such as changing channels and volume adjustment , menu selection, interactive entertainment and more.

In one embodiment, the TV main board 300 also includes: an analog TV ATV tuner 324, which is connected with the digital terrestrial TV signal DVB-T digital tuner 304, and connected with the analog TV ATV decoder 333 on the TV chip 330 connected, wherein the analog TV ATV tuner 324 loops the digital terrestrial TV DVB-T signal received by the digital terrestrial TV signal DVB-T digital tuner 304 out of the analog TV ATV signal, wherein the analog TV ATV on the TV chip 300 The decoder 333 is connected with the TV display outside the main board of the TV.

As shown in FIG. 3 , the analog TV ATV tuner 324 is located on the TV motherboard 300 , but not on the STB chip 310 and the TV chip 330 . Of course, this is just an example. Under certain considerations, the analog TV ATV tuner 324 can also be placed on the set-top box chip 310 or the TV chip 330 .

In this way, according to the embodiment of the present application, the ATV antenna for receiving analog TV ATV signals on the traditional TV main board can be deleted. The antenna of the digital satellite TV system DVB-S signal and/or digital terrestrial TV broadcasting system DVB-T signal received by the original set-top box is reserved, and the radio frequency signal received by the digital terrestrial TV broadcasting system DVB-T antenna is used by the existing analog TV ATV The tuner (tuner) converts the radio frequency signal into an intermediate frequency signal, and then loops out the ATV signal to the analog TV ATV decoder on the TV chip, so that the decoded analog TV ATV audio and video can be output to the TV monitor for display and playback.

In addition, according to the embodiment of the present application, changing two redundant power inputs into one power input 340 receives one power input, which also reduces power consumption and related hardware costs.

Note that each component in Fig. 3 is only a specific embodiment, rather than a limitation. In fact, these circuit modules on the main board of the TV set can be added or deleted as needed, as long as it conforms to the concept and principle of the application or not The described embodiments all belong to the content of the present disclosure and fall within the protection scope of the present application.

In this way, four sets of wires can be used to connect the TV chip and the set-top box chip on the main board of a TV. Some interfaces are deleted and converted or looped out internally (such as remote control signals, antenna signals, etc.), making the TV The required signals are transmitted between the motherboard and the set-top box motherboard. Specifically, the two chips are connected through a set of HDMI lines to transmit TV audio and video signals, and the two chips are connected through a set of asynchronous serial port communication protocol UART lines to transmit the control signals sent by the set-top box chip and the TV chip. . The two chips are connected through a set of remote control transmission lines to send remote control commands from the TV remote control to the set-top box to the set-top box chip. Through a set of wires, the antenna signal of the DVB-T/T2 antenna is transmitted to the TV chip through the ATV signal looped out by the ATV tuner.

Note that the "wired", "connected", and "wired" mentioned here generally mean wired connection, but in some cases, it may also be a wireless connection.

In addition, FIG. 3 also shows some components by way of example and not limitation, such as double-rate synchronous dynamic random access memory (DDR memory) 322, 336, flash memory 308, 309, etc., all of which are processors for data processing and temporary Memory that may be used to store data or store data permanently.

In this way, through various embodiments of the present application, it is possible to put a TV main board according to the embodiment of the present application into the TV when manufacturing the TV, that is, it is possible for the user to watch scrambled and encrypted payment only by purchasing a TV. TV programs, without the need for users to separately purchase both TV sets and set-top boxes to watch scrambled and encrypted pay TV programs, reducing the overall cost paid by users, and promoting the purchase of TV sets loaded with such TV motherboards Desire has brought great commercial benefits, and can also reduce the circuit area and reduce the cost of the chip itself.

FIG. 4 shows a block diagram of a TV 400 to which a TV motherboard according to an embodiment of the present application is applied.

As shown in FIG. 4 , a TV set 400 includes: a TV display 401 ; and a TV main board according to various embodiments of the present application, such as the TV main board shown in FIG. 2 or FIG. 3 .

In this way, when a TV is manufactured, a TV mainboard according to the embodiment of the present application is built into the TV to enable users to watch scrambled and encrypted pay TV programs without buying a TV separately Set-top boxes and set-top boxes can watch scrambled and encrypted pay TV programs, which reduces the overall cost paid by users, promotes users' desire to buy TVs loaded with such TV motherboards, and brings great commercial benefits , can also reduce the circuit area and reduce the cost of the chip itself.

Of course, the above specific embodiments are only examples and not limiting, and those skilled in the art can combine and combine some steps and devices from the above separately described embodiments according to the concept of the present application to realize the effect of the present application. Embodiments formed by combination and combination are also included in this application, and such combination and combination are not described here one by one.

Note that the advantages, advantages, effects, etc. mentioned in the present disclosure are only examples rather than limitations, and it cannot be considered that these advantages, advantages, effects, etc. must be possessed by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and understanding, rather than limitation, and the above details do not limit the application to be implemented by using the above specific details.

The block diagrams of devices, devices, equipment, and systems involved in this disclosure are only illustrative examples

And it is not intended to require or imply that it must be connected, arranged, and configured in the manner shown in the block diagrams.

As will be appreciated by those skilled in the art, these devices, devices, devices, systems may be connected, arranged, configured in any manner. Words such as "including", "comprising", "having" and the like are open-ended words meaning "including but not limited to" and may be used interchangeably therewith. The words "or" and "and" used here

refers to the word "and/or" and is used interchangeably unless the context clearly dictates otherwise. As used herein, the word "such as/for example" refers to and can be used interchangeably with the phrase "such as but not limited to".

In addition, the devices in the various embodiments herein are not limited to implementation in a certain embodiment,

In fact, new embodiments can be conceived by combining relevant partial devices in various embodiments herein according to the concepts of the present application, and these new embodiments are also included in the scope of the present application.

A general-purpose processor, digital signal processing

device (DSP), ASIC, field programmable gate array signal (FPGA) or other programmable logic device (PLD),

The various illustrated logic blocks, modules, and circuits are implemented or described in terms of discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple microprocessors, a microprocessor cooperating with a DSP core, or any other such configuration.

Other examples and implementations are within the scope and spirit of the disclosure and appended claims. For example,

The functions described above may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing functions may also be physically located at various locations, including being distributed so that portions of functions are implemented at different physical locations. And, as used herein, includes the

As used in the claims, the use of "or" in a listing of items beginning with "at least one" indicates a

separate enumerations such that for example the enumeration "at least one of A, B or C" means A or B or C,

Or AB or AC or BC, or ABC (i.e. A and B and C). Furthermore, the word "exemplary" does not mean that the described examples are preferred or better than other examples.

The techniques described herein can be made without departing from the teachings of the technique as defined by the appended claims

changes, substitutions and alterations. In addition, the scope of the claims of the present disclosure is not limited to the above description

Specific aspects of equipment, installations, machines, manufacture. can be performed using the corresponding aspects described in this

A currently existing or later developed device, device, machine, manufacture that performs substantially the same function or achieves substantially the same result. Accordingly, the appended claims include within their scope such apparatus, means, machine, manufacture.

The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of the application to the forms disclosed herein. Although a number of example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims (9)

1. a TV main board, is characterized in that, described TV main board comprises: Digital tuner; Set-top box chips, including: A conditional access CA module connected to the digital tuner; and Audio decoder and video decoder, connected with the conditional access CA module; The TV chip connected with the set-top box chip, including Audio and video output and driver modules; Wherein the audio and video output and drive module are connected with the audio decoder and video decoder in the set-top box chip, and are connected with the TV display outside the main board of the TV set, wherein the set-top box chip and the The TV chips are on the same TV motherboard. 2. The TV main board according to claim 1, characterized in that, the conditional access CA module at least includes a descrambler and a descrambler. 3. TV mainboard according to claim 1 or 2, wherein said digital tuner comprises digital satellite television signal DVB-S digital tuner and digital terrestrial television signal DVB-T digital tuner, said set-top box The chip also includes: DVB-S demodulator and DVB-T demodulator are respectively connected with described digital satellite television signal DVB-S digital tuner and described digital terrestrial television signal DVB-T digital tuner; The demultiplexer is connected with the DVB-S demodulator and DVB-T demodulator and the conditional access CA module. 4. The TV motherboard according to claim 1 or 2, wherein the set-top box chip further comprises: an audio processor connected to said audio decoder; a video processor connected to said video decoder; The output interface is connected to the audio processor, the video processor and the input interface on the TV chip. 5. The TV motherboard according to claim 1 or 2, wherein the TV chip includes a remote control converter, the remote control converter is connected to the remote control receiver on the TV chip, and is connected to The remote control receiver on the set top box chip, wherein the remote control converter converts the remote control signal received by the remote control receiver on the TV chip into a remote control signal that the remote control receiver on the set top box chip can interpret. 6. The main board of the TV set according to claim 5, wherein the remote control converter communicates with the remote control receiver on the set top box chip through the TV chip and the remote control transmission interface on the set top box chip. 7. The TV motherboard according to claim 1 or 2, wherein the TV chip includes a TV processor, and the set-top box chip includes a set-top box processor, wherein the TV processor passes through the The asynchronous serial port communication protocol UART interface on the TV chip and the set-top box chip communicates with the set-top box processor. 8. TV main board according to claim 3, is characterized in that, described TV main board also comprises: Analog TV ATV tuner, is connected with described digital terrestrial TV signal DVB-T digital tuner, and with The analog TV ATV decoder on the TV chip is connected, wherein the analog TV ATV tuner loops the digital terrestrial TV DVB-T signal received by the digital terrestrial TV signal DVB-T digital tuner out of the analog TV ATV signal, wherein the analog TV ATV decoder on the TV chip is connected with the TV display outside the TV mainboard. 9. A TV set, characterized in that the TV set comprises: television monitor; The TV mainboard according to any one of claims 1-8.

Images