CN101304494B

CN101304494B - Method and system for data communication of digital television

Info

Publication number: CN101304494B
Application number: CN2007101022953A
Authority: CN
Inventors: 司马希文; 李文波
Original assignee: Pioneer Corp
Current assignee: Pioneer Corp
Priority date: 2007-05-10
Filing date: 2007-05-10
Publication date: 2012-01-25
Anticipated expiration: 2027-05-10
Also published as: CN101304494A

Abstract

The invention provides a data exchange method used for a digital television and a system thereof. The method comprises the following steps: establishing a data transmission link between a digital television receiving terminal and a mobile communication terminal; carrying out data exchange between the digital television receiving terminal and a digital television network front system through the data transmission link and a mobile communication network. Through the invention, a bidirectional data transmission link can be established between the digital television receiving terminal and the digital television network front system, thus solving the problem of network feedback of the digital television. The data exchange method is also suitable for various digital television networks and has no influence on the existing digital television networks and mobile communication networks, thus saving the cost.

Description

Data exchange method and system for digital television

Technical Field

The present invention relates to digital television technology and mobile communication technology, and in particular, to a data exchange method and system for digital television.

Background

With the development of audio and video digital coding technology, information source compression technology and channel coding technology, digital television technology is becoming mature, digital television technology has been developed in various fields of video shooting, recording, playing, transmission, display and the like of television systems, and digital television replacing analog television has become a common consensus all over the world.

Most of the current televisions are analog televisions based on analog channel transmission, and the problem that a large number of users watch digital television programs by using common televisions is necessarily considered from the development of the analog televisions to the digital televisions, and the digital television receiving terminal is a terminal product for solving the problem. The digital television receiving terminal is a digital television comprehensive decoder which receives and processes digital television signals, performs channel demodulation, information source decoding, audio/video digital-to-analog conversion and other functions, and can be divided into the following steps according to different digital television transmission channels: satellite digital television receiving terminal, cable digital television receiving terminal, ground digital television receiving terminal.

With the continuous development of digital television technology, digital television systems are gradually developed from original single program broadcasting to operation platforms capable of supporting multiple data services. More service types can be developed on digital television systems, such as video-on-demand, games, e-mail, internet browsing, etc. If the digital television receiving terminal, such as a digital television set-top box and a digital television receiver, needs to have a network return function to return the operation information of the user to the front end of the digital television system, and the front end of the digital television system performs related service according to the returned information.

The digital television receiving terminal with the return function is called a bidirectional digital television receiving terminal. Currently, most of bidirectional receiving terminals usually use channels such as telephone lines, cable television cables or ethernet to perform return transmission, and an interactive television is formed through the return transmission. The existing backhaul technology mainly has the following modes: a Telephone backhaul via a Public Switched Telephone Network (PSTN), an Ethernet backhaul via a cable modem, and a digital video broadcasting with backhaul (DAVIC/DVB-RC) channel.

The foregoing backhaul method will be described below by taking a digital television receiving terminal as a digital television set-top box as an example.

Fig. 1 is a schematic diagram of a digital tv set-top box using a telephone line backhaul method. As shown in fig. 1, a modem (modem) is built in the digital television set-top box, and when a user requests a program on a set-top box terminal, the set-top box firstly packages data to be transmitted back through the modem, then modulates the data, transmits the data to a PSTN network, and transmits the data to a front-end system through the PSTN network.

The telephone line return mode has the advantages that: easy to realize and low in cost. However, the drawbacks of the backhaul method are: because the transmission capability of the telephone line is low, the voice segment data of the telephone is used in the traditional dialing, and the highest transmission rate is only 112kps, the transmission speed of the returned data is low, and the operation response of a user is not timely; in addition, the set-top box has a built-in modem, which increases the cost.

Fig. 2 is a schematic diagram of a digital tv set-top box using an ethernet backhaul method. As shown in fig. 2, an 10/100M ethernet module is integrated inside the digital tv set-top box and connected to the ethernet network through an RJ45 interface, thereby forming a digital tv backhaul network. For example, in a specific implementation aspect, an RJ45 interface on the set-top box and an ADSL modem can be directly connected together through a network cable, and the set-top box return data transmits the data to the ADSL modem through an internal ethernet network card and transmits the data back to the system front end through the ADSL modem, so as to form a bidirectional network of the digital television set-top box.

The Ethernet return mode has the advantage of solving the defect of slow return speed of the telephone line. However, the drawback of the ethernet backhaul method is that the set-top box is limited by the coverage of the ethernet network, and an ethernet card needs to be added, thereby increasing the cost of the whole set-top box and the difficulty in implementing software and hardware.

Fig. 3 is a schematic diagram of a digital tv set-top box using a cable modem backhaul method. As shown in fig. 3, the cable modem backhaul is an in-cable-band backhaul using cable digital tv, and there are several standards for the current cable modems, including IEEE defined IEEE802.14 protocol, DAVIC (digital audio video committee) defined DAVIC protocol, and MCNS (multimedia cable network system) defined DOCSIS and Euro-DOCSIS protocols. The cable modem is provided with a USB interface and can be connected with a computer, and the cable modem can be connected by adding the USB interface into the set-top box. The return network of the cable digital television is formed by the method.

The cable modem return method has the advantages of solving the defect that other schemes need to use other networks, having high transmission speed and directly using a cable television network to form return. However, the method has the disadvantages that the problem of returning the cable digital television can only be solved, and the problem of returning the satellite digital television and the ground digital television can not be solved; and the technical difficulty and the cost are high when the unidirectional network is transformed into the bidirectional network.

Disclosure of Invention

The embodiment of the invention provides a data exchange method and system for a digital television. The mobile communication network and the digital television network are connected together by the method, so that the network return problem of the digital television is well solved, and the existing digital television network and the mobile communication network are not influenced, thereby saving the cost.

The embodiment of the invention provides a data exchange method for a digital television, which comprises the following steps:

establishing a data transmission link between the digital television receiving terminal and the mobile communication terminal;

and performing data exchange between the digital television receiving terminal and a digital television network front-end system by using the data transmission link and the mobile communication network.

The invention also provides a data exchange system for the digital television, which comprises a digital television receiving terminal and a digital television network front-end system; further comprising: a mobile communication terminal and a mobile communication network front-end system;

the mobile communication terminal is communicated with the digital television receiving terminal and a mobile communication network front-end system, receives data transmitted by the digital television receiving terminal, processes the data and transmits the processed data to the mobile communication network front-end system through a mobile communication network; receiving data transmitted by a mobile communication network front-end system, processing the data and transmitting the processed data to the digital television receiving terminal;

the mobile communication network front-end system is used for receiving the data transmitted by the mobile communication terminal and transmitting the data to the digital television network front-end system; the system is used for receiving the data transmitted by the digital television network front-end system and transmitting the data to the mobile communication terminal.

The embodiment of the invention also provides a digital television receiving terminal, which comprises a front-end circuit and a back-end circuit; further comprising at least: the system comprises a user control circuit, a central processing unit and a data interface; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the central processing unit; the central processing unit receives the user operation instruction, judges whether the mobile communication terminal is connected to the digital television receiving terminal, generates return data if the mobile communication terminal is connected to the digital television receiving terminal according to the judgment result, and transmits the return data to the data interface; the data interface receives the return data and transmits the return data to the mobile communication terminal;

the data interface also receives data transmitted by the mobile communication terminal and transmits the data to the central processing unit; and the central processing unit processes the data and performs corresponding operation.

The embodiment of the invention provides a data exchange method of a digital television, which is based on a mobile communication terminal with a digital television receiving function, wherein the mobile communication terminal at least comprises a digital television receiving unit and a communication unit connected with the digital television receiving unit;

the data exchange method comprises the following steps: and the mobile communication terminal exchanges data with the front-end system of the digital television network by using a mobile communication network.

The embodiment of the invention provides a data exchange system of a digital television, which comprises a digital television network front-end system, a mobile communication terminal and a mobile communication network front-end system; wherein,

the mobile communication terminal at least comprises a digital television receiving unit and a communication unit; wherein,

the digital television receiving unit is used for receiving and responding to a user operation instruction, generating return data and transmitting the return data to the communication unit; receiving the data transmitted by the communication, processing the data and carrying out corresponding operation;

the communication unit is used for receiving the data transmitted by the digital television receiving unit, processing the data and transmitting the processed data to the mobile communication network front-end system through a mobile communication network; receiving data transmitted by a mobile communication network front-end system, processing the data and transmitting the processed data to the digital television receiving unit;

The embodiment of the invention provides a mobile communication terminal with a digital television receiving function, which comprises a digital television receiving unit and a communication unit connected with the digital television receiving unit, wherein,

the digital television receiving unit comprises a front-end circuit and a back-end circuit, and further comprises: the user control circuit and the second central processing unit; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the second central processing unit; the second central processing unit receives the user operation instruction, generates return data and transmits the return data to the first central processing unit of the communication unit;

the second central processing unit also receives the data transmitted by the communication unit, processes the data and carries out corresponding operation;

the communication unit of the mobile communication terminal includes at least: the antenna, the radio frequency unit and the first central processing unit; wherein,

the antenna is used for receiving data sent by the mobile communication network front-end system through a mobile communication network and transmitting the data to the radio frequency unit;

the radio frequency unit processes the received data and transmits the processed data to the first central processing unit; the first central processing unit receives the processed data and transmits the processed data to a second central processing unit of the digital television receiving unit;

the first central processing unit also receives the return data transmitted by the digital television receiving unit, processes the return data, transmits the processed return data to the radio frequency unit, and transmits the return data to the mobile communication network front-end system through the antenna.

The embodiment of the invention has the advantages that the network return problem of the digital television is solved through the data transmission link between the digital television receiving terminal and the digital television network front-end system;

the method is suitable for various digital television networks, and can not cause any influence on the existing digital television networks and mobile communication networks;

the mobile communication terminal and the digital television receiving terminal can be separated and used independently, and the use is flexible.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic diagram of a digital tv set-top box terminal in a manner of returning via a telephone line in the prior art;

fig. 2 is a schematic diagram illustrating a digital tv set-top box using an ethernet backhaul method in the prior art;

FIG. 3 is a schematic diagram of a digital TV set-top box using a cable modem backhaul method in the prior art;

fig. 4A is a schematic diagram of a digital television receiving terminal according to the present invention;

fig. 4B is a schematic diagram of a digital television receiving terminal according to an embodiment of the present invention;

fig. 5 is a schematic configuration diagram of a mobile communication terminal according to an embodiment of the present invention;

FIG. 6 is a block diagram of a data exchange system according to an embodiment of the present invention;

fig. 7A is a flowchart illustrating communication between a digital television receiving terminal and a mobile communication terminal when data is transmitted back by using a data transmission link according to an embodiment of the present invention;

fig. 7B is a flowchart illustrating communication between the mobile communication terminal and the digital tv network front-end system when returning data according to the embodiment of the present invention;

fig. 8 is a flowchart of communication between a mobile communication terminal and a digital television receiving terminal when downlink data exchange is performed by using a data transmission link according to an embodiment of the present invention;

FIG. 9 is a block diagram of a data exchange system according to another embodiment of the present invention;

fig. 10 is a schematic diagram of a mobile communication terminal with a digital television receiving function according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

The embodiment of the invention provides a data exchange method and system for a digital television. The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Example one

An embodiment of the present invention provides a data exchange system for a digital television, as shown in fig. 6, including a digital television receiving terminal 601, a digital television network front-end system 604; further comprising: a mobile communication terminal 602 and a mobile communication network front-end system 603; wherein,

a mobile communication terminal 602, which communicates with the digital television receiving terminal 601 and the mobile communication network front-end system 603, receives the data transmitted by the digital television receiving terminal 601, processes the data and transmits the processed data to the mobile communication network front-end system 603 through the mobile communication network; the data transmitted by the mobile communication network front-end system 603 is received through the mobile communication network, processed and transmitted to the digital television receiving terminal 601.

A mobile communication network front-end system 603, configured to receive data transmitted by the mobile communication terminal 602, and transmit the data to the digital television network front-end system 604; for receiving the data transmitted by the digital tv network front-end system 604 and transmitting to the mobile communication terminal 602.

In this embodiment, as shown in fig. 5, the mobile communication terminal 602 at least includes: an antenna, a radio frequency unit 501, a central processing unit 502 and a data interface 507; wherein,

the antenna is used for receiving data transmitted by the mobile communication network front-end system 603 transmitted through the mobile communication network and transmitting the data to the radio frequency unit 501; the radio frequency unit 501 processes the received data and transmits the processed data to the central processing unit 502; the central processing unit 502 receives the processed data, determines whether a digital television receiving terminal is connected to the mobile communication terminal, and transmits the data to the data interface 507 if the determination result is that the digital television receiving terminal is connected to the mobile communication terminal; the data interface 507 receives the processed data transmitted by the central processing unit 502 and transmits the processed data to the digital television receiving terminal;

the data interface 507 also receives return data transmitted by the digital television receiving terminal and transmits the return data to the central processing unit 502; the central processing unit 502 processes the return data and transmits the processed return data to the rf unit 501, and transmits the return data to the mobile communication network front-end system 603 through an antenna.

In addition, the mobile communication terminal described above further includes a voice input/output unit 503, a memory 506, a key input unit 504, a display unit 505, and the like.

The cpu 502 is a control core of the mobile communication terminal, and is responsible for executing the system instructions, performing digital and logical operations, storing and transmitting data, and controlling internal and external inputs and outputs, in addition to performing the above functions. The operating system of the mobile communication terminal is operated to control the operation of other components.

The functions of the radio frequency unit 501, the voice input/output unit 502, the display unit 505 and the memory 506 are similar to those of the prior art, and are not described herein again.

The data interface 507 of the mobile communication terminal is one or more of an infrared interface, a bluetooth interface, a USB interface, and a Wireless Fidelity (WIFI: Wi-Fi). The mobile communication terminal communicates with the digital tv terminal through the data interface 507.

As shown in fig. 4A, in this embodiment, the digital television receiving terminal includes a front-end circuit 401, a back-end circuit 402, and further includes at least a user control circuit 405, a central processing unit 403, and a data interface 404; wherein,

a user control circuit 405, configured to receive and respond to a user operation instruction, and transmit the user operation instruction to the central processing unit 403; the central processing unit 403 receives the user operation instruction, determines whether a mobile communication terminal is connected to the digital television receiving terminal, generates return data if the determination result indicates that the mobile communication terminal is connected to the digital television receiving terminal, and transmits the return data to the data interface 404; the data interface 404 receives the backhaul data and transmits the backhaul data to the mobile communication terminal;

the data interface 404 also receives data transmitted from the mobile communication terminal and transmits the data to the central processor 403; the central processing unit 403 processes the data and performs the corresponding next operation. For example, when receiving the authorization information of a digital television program through the data interface 404, the central processor 403 of the digital television receiving terminal controls the digital television receiving terminal to play the corresponding digital television program through the authorization information.

In this embodiment, the central processing unit 403 may adopt a RISC CPU; the cpu 403 is the core of the whole system, and is responsible for executing instructions of the whole system, performing digital and logical operations, storing and transmitting data, and controlling internal and external inputs and outputs, in addition to performing the above functions.

The user control circuit 405 may be a remote controller receiving circuit, a keyboard scanning circuit, an LED driving circuit, an RS232 level conversion circuit, etc., and is mainly used for receiving and responding to user operations.

The data interface 404 of the digital television receiving terminal is one or more of an infrared interface, a bluetooth interface, a USB interface and a WIFI interface. And the mobile communication terminal communicates with the digital television terminal through the data interface.

In the above embodiments, the digital television receiving terminal may be a digital television set-top box or a digital television receiver, and the following describes in detail the structure of the digital television receiving terminal according to the embodiments of the present invention with reference to fig. 4B.

As shown in fig. 4B, the digital television receiving terminal is configured as a schematic diagram. The front-end circuit 401 includes a tuner and a channel demodulation chip; the back-end circuitry 402 includes a demultiplexer, an MPEG-2 audio video, graphics decoder; a video encoder and audio DAC unit; in addition, units such as a user control circuit, a peripheral interface, a storage device (not shown in the figure) and the like are also included.

The functions of the portions of the front-end circuit 401 and the back-end circuit 402 are similar to those of the prior art, and are briefly described below. Wherein,

in the front-end circuit 401, the tuner is configured to lock a digital television transmission frequency point, perform down-conversion processing, convert a high-frequency signal into an intermediate-frequency signal, and transmit the intermediate-frequency signal to a channel demodulation chip after digital-to-analog conversion. The channel demodulation chip performs corresponding channel decoding to generate a Transport Stream (TS).

In the back-end circuit 402, a demultiplexer separates a composite Transport Stream (TS) and extracts a required decoded digital program stream or data stream or Service Information (SI), and the demultiplexing requires a lot of Memory, and generally uses an external storage device, such as a Dynamic Random Access Memory (DRAM) or an external SDRAM. The data sent by the demultiplexer are compressed video PES data and audio PES data, and the PES data needs to be decompressed by an MPEG-2 video decoder and an MPEG-1 or MPEG-2 audio decoder. The MPEG-2 video decoder recovers the video signal according to the MPEG-2MP/ML standard and outputs the recovered video signal as a digital signal in the format of the CCIR601 standard. The audio decoder recovers the audio signal according to the ISO 11172-3 or ISO 13818-3 standard and outputs the audio signal in a digital signal format of Pulse Code Modulation (PCM). Both the video decoder and the audio decoder require a lot of memory, and typically use an external memory device, such as DRAM or external SDRAM.

The video encoder converts the decoded digital signal into an analog signal, receives the CCIR-601 digital video signal output by the MPEG-2 decoder, and converts the signal into a composite video signal (CVBS) or a color-and-brightness separated signal (Y-C signal), which is low-pass filtered (typically 6.5MHz) and then sent to the television for playing. The audio DAC unit processes the digital signals in the PCM format, performs digital-to-analog (DA) conversion on the signals to obtain analog audio signals, and outputs and plays the audio signals after operating the amplifying circuit.

In addition, the memory cells (not shown) include FALSH, E²PROM, etc., FALSH for storing program of digital TV terminal, E²The PROM is used for storing user configuration information, program channel information and other contents.

The central processing unit, which is generally a RISC CPU, is the core of the entire system and is responsible for executing instructions of the entire system, performing digital and logical operations, storing and transferring data, and controlling internal and external inputs and outputs. Also included are control buses, e.g. I, for transmitting control signals and data²C. GPIO bus, etc.

The peripheral interface comprises a WIFI interface, an infrared interface, a Bluetooth interface, a USB interface and the like, and is used for the digital television receiving terminal to form a data transmission link through the data interfaces and communicate with the mobile communication terminal.

Therefore, the data transmission link between the mobile communication terminal and the digital television receiving terminal is established by utilizing the data interface, so that the problem of network return of the digital television is solved; the method is suitable for various digital television networks, and can not cause any influence on the existing digital television networks and mobile communication networks; the mobile communication terminal and the digital television receiving terminal can be separated and used independently, and the use is flexible.

Example two

and performing data exchange between the digital television receiving terminal and the digital television network front-end system by using the data transmission link and the mobile communication network.

In this embodiment, the data transmission link is established in a wireless or wired manner.

Through the embodiment, the seamless connection between the digital television network and the mobile communication network is established, the problem of back transmission of the digital television network is solved, and the existing digital television network and the mobile communication network are not required to be modified, so the cost is low.

In this embodiment, the digital television network may be a cable digital television, a terrestrial digital television, a satellite digital television, or the like.

In this embodiment, a wired or wireless data transmission link may be established by using data interfaces of the mobile communication terminal and the digital television receiving terminal, and data exchange between the digital television receiving terminal and the front-end system of the digital television network may be performed by using the data transmission link and the mobile communication network. In this embodiment, the data interface may be: one or more of a USB interface, an infrared interface, a bluetooth interface, and a WIFI interface, as shown in fig. 4A, 4B, and 5, but not limited thereto.

In this embodiment, the digital television receiving terminal may be a digital television set-top box or a digital television receiver.

In this embodiment, as shown in fig. 6, a backhaul network of a digital television receiving terminal is established by using the data transmission link.

When the digital television receiving terminal 601 returns data, the data exchange by using the data transmission link includes the steps: when a digital television receiving terminal user operates, return data is generated at the digital television receiving terminal 601; the digital television receiving terminal 601 transmits the return data to the mobile communication terminal 602 through the data transmission link; the mobile communication terminal 602 transmits the return data to the digital tv network front-end system 604 through the mobile communication network.

In this embodiment, when the digital television receiving terminal user performs an operation, generating the return data at the digital television receiving terminal 601 includes the following steps:

the digital television receiving terminal 601 responds to a user operation instruction; the digital tv receiving terminal 601 checks the data interface, and inquires whether the mobile communication terminal 602 is connected to the digital tv receiving terminal; if the mobile communication terminal 602 is found as the query result, the digital television receiving terminal 601 generates the return data.

In this embodiment, when the mobile communication terminal 602 is queried as a query result, before the digital television receiving terminal 601 generates the return data, the method further includes the steps of:

performing identity authentication of the mobile communication terminal 602, and judging whether the identity authentication passes; and if the judged result is that the identity authentication is passed, generating return data.

In this embodiment, the mobile communication terminal 602 transmits the return data to the digital television network front-end system 604 through the mobile communication network, and may adopt the following steps:

the mobile communication terminal 602 sends the return data to the mobile communication network front-end system 603 through the mobile communication network by sending short messages, GPRS data and the like; the mobile communication network front-end system 603 obtains the return data and transmits the data to the digital television front-end network front-end system 604. After the digital tv network front-end system 604 obtains the returned data, the obtained returned data is analyzed, and corresponding user management is performed according to the returned data. Then, the digital tv network front-end system 604 transmits the program to the digital tv receiving terminal 601 that requests the program through the digital tv transmission network according to the feedback instruction, such as the name of the program requested, so that the user obtains the program information through the digital tv receiving terminal 601.

In this embodiment, the feedback data may be various feedback instructions, such as video on demand, data download, user authentication, game, web browsing, and the like. The following description will be made by taking video on demand as an example with reference to fig. 4A, 4B, 5 and 7A.

When the user of the digital television receiving terminal operates, the user control circuit 405 of the digital television receiving terminal responds to the user operation instruction and transmits the instruction to the central processing unit 403 (see step 701);

the central processing unit 403 of the digital tv receiving terminal checks the data interface to inquire whether a mobile communication terminal is connected to the digital tv receiving terminal (see steps 702, 703); the digital television receiving terminal firstly checks the data interface 404, and if the data interface 404 is in a wired connection mode, directly inquires whether a mobile communication terminal is connected to the data interface 404 or not; if the mobile communication terminal is in a wireless connection mode, sending query operation through the wireless data interface 404, and querying whether a mobile communication terminal responds to a query instruction within a wireless connection range;

if the inquired result is that the mobile communication terminal is connected to the digital television receiving terminal, performing identity authentication of the mobile communication terminal, and judging whether the identity authentication is passed (see steps 704 and 705); when the identity authentication is carried out, the mobile communication terminal sends an identity Identification (ID) number to the digital television receiving terminal through a data transmission link; the digital television receiving terminal reads and verifies the identification number of the mobile communication terminal, in this embodiment, the central processing unit 403 of the digital television receiving terminal verifies whether the identification number is correct (see step 705);

if the identity identification number is verified to be correct, the digital television receiving terminal generates return data through identity authentication (step 706);

the digital television receiving terminal sends the return data to the mobile communication terminal (see step 707); which comprises the following steps: the digital tv receiving terminal packs the return data into a transmission format and transmits it to the data interface 404 of the digital tv receiving terminal, such as the wired or wireless interface mentioned above; the digital television receiving terminal transmits the return data to the mobile communication terminal through a data transmission link.

And finally, after receiving the return data, the mobile communication terminal transmits the return data to the front-end system of the digital television network through the mobile communication network. As shown in fig. 7B, the following steps may be adopted in this embodiment:

the mobile communication terminal obtains the return data through its data interface 507, and performs data verification and error correction in the central processing unit 502 of the mobile communication terminal (see steps 713 and 714); after the mobile communication terminal obtains the data, the obtained data is corrected by an error correction coding technology, error codes generated in the process of retransmitting the data in a transmission link are corrected, and the data is verified to judge whether the data is legal or not.

The central processor 502 of the mobile communication terminal processes, i.e., repackages, the backhaul data to generate a data format transmitted in the mobile communication network (see step 715);

the mobile communication terminal sends the return data to the mobile communication network front-end system through the mobile communication network by sending short messages, GPRS data and the like (see step 716);

the mobile communication network front-end system obtains the return data and transmits the data to the digital television front-end network front-end system (see steps 717 and 718).

The front-end system of the digital tv network analyzes the obtained feedback data and performs corresponding user management according to the feedback data (see step 719). Then, the front end system of the digital television network sends the program to the digital television receiving terminal of the program on demand through the digital television transmission network according to the return instruction, such as the name of the program on demand (see step 720); the user obtains program information, such as a program on demand, through the digital television receiving terminal (see step 721).

In the above embodiment, as shown in fig. 7A, in step 703, it is determined whether the mobile communication terminal is not queried according to the determination result of querying the mobile communication terminal, and then it is further determined whether the number of querying times is greater than the predetermined value (see step 711); if the query frequency is greater than the predetermined value, the transmission fails (see steps 711 and 712), and the backhaul process is terminated. If the determination result is that the number of inquiry times is not greater than the predetermined value, the process returns to step 703 to continue inquiring the mobile communication terminal (see steps 711 and 703). The predetermined value can be arbitrarily selected, and in this embodiment, the predetermined value is set to 10 times.

In the above embodiment, as shown in fig. 7A, if the determination result of determining whether the identity authentication is passed in step 705 is that the identity authentication is not passed, a failure is sent (see steps 705 and 712), and the backhaul procedure is ended.

In addition, in this embodiment, as shown in fig. 7A, in order to further ensure the success rate of the transmitted data, after step 707, the method further includes the steps of:

whether the digital television receiving terminal gets a response signal from the mobile communication terminal (see step 708); if the judgment result is that the response signal is obtained, the transmission is successful (see steps 708 and 709); whether the sending process is finished or not is further judged, and if the judgment result is that the sending process is finished (see step 710), the sending process is finished.

In this embodiment, as shown in fig. 7A, if the determination result of determining whether a response signal is obtained in step 708 is that no response signal is obtained, the process returns to step 707.

In addition, the operation flows of data downloading, user authentication and the like are basically the same as those of video-on-demand, and are not described herein again.

In addition, in this embodiment, as shown in fig. 6, by using the data transmission link, the digital television network front-end system 604 can perform operations such as control and authorization on the digital television receiving terminal 601.

When the digital tv network front-end system 604 transmits data to the digital tv receiving terminal 601, data exchange is performed with a mobile communication network by using a data transmission link, as shown in fig. 6 and 8, including the steps of:

the digital television network front-end system 604 transmits data to the mobile communication terminal 602 through the mobile communication network; which comprises the following steps: first, the digital tv network front-end system 604 transmits data to the mobile communication network front-end system 603, and the mobile communication network front-end system 603 transmits the data to the mobile communication terminal 602.

After receiving the data, the mobile communication terminal 602 transmits the data to the digital television receiving terminal 601 through the data transmission link, as shown in fig. 8, and may perform the following steps:

as shown in fig. 8, when the mobile communication terminal receives data, the central processing unit 502 converts the data, and in this embodiment, the encapsulation of the data packet is removed first to obtain valid data of the transmission instruction, and then the data is packed, encapsulated and compressed according to the difference of the transmission links. (see step 801);

the mobile communication terminal transmits the data to the digital television receiving terminal through a data transmission link; in this embodiment, as shown in fig. 8, the following steps may be adopted:

the central processor 502 of the mobile communication terminal checks the data interface (see step 802); inquiring whether a digital television receiving terminal is connected to the mobile communication terminal (see step 803); if the inquiry result is that the digital television receiving terminal exists, the identity authentication of the digital television receiving terminal is carried out (see step 805); when the identity authentication is carried out, the digital television receiving terminal sends an identity Identification (ID) number to the mobile communication terminal through a data transmission link; the mobile communication terminal reads and verifies the identification number of the digital television receiving terminal, in this embodiment, the central processing unit 502 of the mobile communication terminal verifies whether the identification number is correct;

judging whether the identity authentication passes (see step 806), wherein if the identity identification number is verified to be correct in the embodiment, the identity authentication passes;

if the result of the judgment is that the identity authentication is passed, the mobile communication terminal sends data to the digital television receiving terminal (see step 807);

finally, after the digital television receiving terminal receives the data, corresponding operation is carried out; wherein, the following steps can be adopted:

the digital television receiving terminal obtains data through its data interface 404, and after processing by its central processing unit 403, the data is sent to the back-end circuit 402 to control the digital television receiving terminal to perform corresponding operations. For example, the data interface 404 receives authorization information of the digital television program, and the central processing unit of the digital television receiving terminal controls the digital television receiving terminal to play the corresponding digital television program through receiving the information.

In the above embodiment, as shown in fig. 8, in step 803, it is determined whether the digital television receiving terminal is not queried as a result of the determination of querying the digital television receiving terminal, and then it is further determined whether the number of queries is greater than a predetermined value (see step 811); if the query frequency is greater than the predetermined value, the transmission fails (see steps 811 and 812), and the backhaul process is terminated. If the determination result is that the number of inquiries is not greater than the predetermined value, the process returns to step 803, and the digital television receiving terminal is continuously inquired (see steps 811 and 803). The predetermined value can be arbitrarily selected, and in this embodiment, the predetermined value is set to 10 times.

In the above embodiment, as shown in fig. 8, if the determination result of determining whether the identity authentication is passed in step 806 is that the identity authentication is not passed, a failure is sent (see steps 806 and 812), and the backhaul process is ended.

In addition, in this embodiment, as shown in fig. 8, in order to further ensure the success rate of transmitting data, after step 807, the method further includes the steps of:

whether the mobile communication terminal gets a response signal from the digital television receiving terminal (see step 808); if the judgment result is that the response signal is obtained, the successful transmission is indicated (see steps 808 and 809); whether the sending process is finished or not is further judged, and if the judgment result is that the sending process is finished (see step 810), the sending process is finished.

In this embodiment, as shown in fig. 8, if the determination result of step 808 indicates that no response signal is obtained, the process returns to step 807.

In this embodiment, the data may be a control instruction, an authorization instruction, and the like, where the control instruction is a control operation instruction for the digital television receiver, such as controlling a timing start, controlling software upgrade of the digital television receiver, and the like. If the software of the digital television terminal needs to be updated, the set-top box software needing to be updated is transmitted to the digital television receiving terminal through the control instruction, and the digital television receiving terminal is controlled to automatically update the software. The following description will be made by taking user authorization as an example.

When a user watches digital television programs through a digital television receiving terminal, some encrypted programs need to be watched after authorization of the user. When user authorization is performed, the method comprises the following steps:

the user management system of the digital television network front-end system 604 sends the authorization instruction to the mobile communication terminal 602 through the mobile communication network front-end system 603; the mobile communication terminal 602 sends the authorization instruction to the digital television receiving terminal 601 through the data transmission link; after the digital television receiving terminal 601 obtains the authorization information, the program can be played.

EXAMPLE III

In this embodiment, when the user uses the mobile communication terminal with the digital television receiving function, the mobile communication network may also be used to exchange data with the digital television network front-end system.

The embodiment of the present invention provides a data exchange system for a digital television, as shown in fig. 9, including a digital television network front-end system 903, a mobile communication terminal 901 and a mobile communication network front-end system 902; wherein,

the mobile communication terminal 901, as shown in fig. 10, includes at least a digital television receiving unit 1001 and a communication unit 1002; wherein,

the digital television receiving unit 1001 is configured to receive and respond to a user operation instruction, generate return data, and transmit the return data to the communication unit 1002; receiving data transmitted by the communication unit 1002, processing the data, and performing corresponding operations, which are similar to those in the first and second embodiments and are not described herein again;

the communication unit 1002 is configured to receive the data transmitted by the digital television receiving unit 1001, process the data, and transmit the processed data to the mobile communication network front-end system 902 through a mobile communication network; receiving data transmitted by the mobile communication network front-end system 902, processing the data and transmitting the processed data to the digital television receiving unit 1001;

the mobile communication network front-end system 902 is configured to receive data transmitted by the mobile communication terminal, and transmit the data to the digital television network front-end system 903; for receiving the data transmitted by the digital tv network front-end system 903, and transmitting to the mobile communication terminal 901.

In this embodiment, as shown in fig. 10, the communication unit 1002 of the mobile communication terminal at least includes: the antenna, the radio frequency unit and the first central processing unit; wherein,

the antenna is configured to receive data sent by the mobile communication network front-end system 902 through a mobile communication network, and transmit the data to the radio frequency unit; the radio frequency unit processes the received data and transmits the processed data to the first central processing unit; the first central processing unit receives the processed data and transmits the processed data to the digital television receiving unit 1001;

the first central processing unit further receives the return data transmitted by the digital television receiving unit 1001, processes the return data, transmits the processed return data to the radio frequency unit, and transmits the return data to the mobile communication network front-end system 902 through the antenna.

In addition, the communication unit 1002 may further include a voice input/output unit, a memory, a key input unit, a display unit, and the like, which have similar functions to those of the prior art and are not described herein again.

The digital television receiving unit 1001 of the mobile communication terminal includes at least: the user control circuit and the second central processing unit; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the second central processing unit; the second central processing unit receives the user operation instruction, generates return data, and transmits the return data to the communication unit 1002;

the second central processing unit further receives the data transmitted by the communication unit 1002, processes the data, and performs corresponding operations, where the data processing and operation processes are similar to those in the second embodiment, and are not described here again.

In addition, the digital television receiving unit 1001 further includes a front-end circuit and a back-end circuit, which have the same configuration and function as those of the first embodiment, and are not described herein again.

In this embodiment, the dtn receiving unit 1001 and the communication unit 1002 are integrated into the mobile communication terminal, and the dtn receiving unit 1001 and the central processing unit of the communication unit 1002 can be connected by means of a data bus or the like, so as to exchange data.

Example four

The data exchange method of the digital television according to the embodiment of the present invention will be described below by taking the data exchange system of the digital television according to the third embodiment as an example.

When the mobile communication terminal returns data, the data exchange is carried out by utilizing the mobile communication network, comprising the following steps:

when the mobile communication terminal user operates, the digital television receiving unit of the mobile communication terminal responds to a user operation instruction and generates return data; the digital television receiving unit of the mobile communication terminal transmits the return data to the communication unit of the mobile communication terminal; and the communication unit of the mobile communication terminal transmits the return data to the digital television network front-end system through a mobile communication network.

In this embodiment, the transmitting unit of the mobile communication terminal transmits the return data to the front-end system of the digital television network through a mobile communication network, including:

after the communication unit of the mobile communication terminal obtains the return data, the return data is processed and transmitted to a front end system of a mobile communication network; wherein, the following steps can be adopted: the communication unit of the mobile communication terminal performs data verification and error correction on the returned data; repackaging the returned data to generate a data format transmitted in a mobile communication network; and the communication unit of the mobile communication terminal transmits the return data to a mobile communication network front-end system through a mobile communication network.

And then, the mobile communication network front-end system transmits the return data to the digital television network front-end system.

And the digital television network front-end system acquires the return data, analyzes the return data, and performs corresponding user management or sends the on-demand program to the mobile communication terminal according to the return data.

In this embodiment, when the digital television network front-end system transmits data to the mobile communication terminal, the data exchange using the mobile communication network includes:

the digital television network front-end system sends the data to a communication unit of the mobile communication terminal through a mobile communication network; and the communication unit of the mobile communication terminal converts the data and then sends the data to the digital television receiving unit. The data conversion process is similar to that of the second embodiment, and is not described herein again.

And after receiving the data, the digital television receiving unit processes the data and carries out corresponding operation. The data processing and operation process is similar to that of the second embodiment, and is not described herein again.

According to the embodiment, the network return problem of the digital television is solved through the data transmission link between the mobile communication terminal and the digital television receiving terminal, the method can be used for various digital television networks, and the existing digital television network and the mobile communication network cannot be influenced, so that the cost is saved.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A data exchange method for a digital television, the method comprising the steps of:

establishing a wireless data transmission link between a digital television receiving terminal and a mobile communication terminal;

when a digital television receiving terminal user operates, the digital television receiving terminal responds to a user operation instruction;

the digital television receiving terminal checks a data interface and inquires whether a mobile communication terminal is connected to the digital television receiving terminal; if the mobile communication terminal is inquired according to the inquiry result, the digital television receiving terminal generates return data; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

the digital television receiving terminal transmits the return data to the mobile communication terminal through the data transmission link;

the mobile communication terminal transmits the return data to the digital television network front-end system through a mobile communication network;

and the digital television network front-end system acquires the return data, analyzes the return data, and performs corresponding user management or sends the on-demand program to the digital television receiving terminal according to the return data.

2. The data exchange method for digital television according to claim 1, characterized in that: when the mobile communication terminal is inquired according to the inquiry result, before the digital television receiving terminal generates the return data, the method further comprises the following steps:

performing identity authentication of the mobile communication terminal, and judging whether the identity authentication passes;

and if the judged result is that the identity authentication is passed, generating the returned data.

3. The data exchange method for digital television according to claim 1, characterized in that: after the digital television receiving terminal transmits the return data to the mobile communication terminal, the method further comprises the following steps:

the digital television receiving terminal judges whether a response signal of the mobile communication terminal is received or not;

if the judgment result is that the message is received, the message is successfully sent.

4. The data exchange method for digital television according to claim 1, characterized in that: the mobile communication terminal transmits the return data to the digital television network front-end system, and the method comprises the following steps:

after the mobile communication terminal obtains the return data, the return data is processed and transmitted to a mobile communication network front-end system;

and the mobile communication network front-end system sends the return data to the digital television network front-end system.

5. The data exchange method for digital television according to claim 4, characterized in that: the processing and transmitting of the return data to the mobile communication network front-end system comprises the following steps:

the mobile communication terminal performs data verification and error correction on the returned data;

repackaging the returned data to generate a data format transmitted in a mobile communication network;

and the mobile communication terminal sends the return data to a mobile communication network front-end system through a mobile communication network.

6. The data exchange method for digital television according to claim 1, characterized in that: when the digital television network front-end system transmits data to the digital television receiving terminal, the method further comprises the following steps:

the digital television network front-end system sends the data to the mobile communication terminal through a mobile communication network;

and the mobile communication terminal sends the data to the digital television receiving terminal through the data transmission link.

7. The data exchange method for digital television according to claim 6, characterized in that: the mobile communication terminal sends the data to the digital television receiving terminal, and the method comprises the following steps:

after the mobile communication terminal obtains the data, data conversion is carried out;

checking a data interface;

inquiring the digital television receiving terminal, and judging whether the digital television receiving terminal is inquired;

and if the judgment result is that the digital television receiving terminal is inquired, transmitting the data to the digital television receiving terminal.

8. The data exchange method for digital television according to claim 7, wherein: after the step of inquiring the digital television receiving terminal, the method further comprises the following steps:

performing identity authentication of the digital television receiving terminal, and judging whether the identity authentication passes;

and if the judged result is that the identity authentication is passed, the mobile communication terminal sends the data to the digital television receiving terminal.

9. The data exchange method for digital television according to claim 8, wherein: further comprising the steps of:

the mobile communication terminal judges whether a response signal of the digital television receiving terminal is received or not;

10. A data exchange system for digital television comprises a digital television receiving terminal and a digital television network front-end system; it is characterized by also comprising: a mobile communication terminal and a mobile communication network front-end system; wherein,

the mobile communication terminal establishes a wireless data transmission link with the digital television receiving terminal, communicates with the digital television receiving terminal and a mobile communication network front-end system, receives return data transmitted by the digital television receiving terminal, processes the return data and transmits the processed return data to the mobile communication network front-end system through a mobile communication network; receiving data transmitted by a mobile communication network front-end system, processing the data and transmitting the processed data to the digital television receiving terminal; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

11. The data exchange system for digital television according to claim 10, characterized in that: the mobile communication terminal includes at least: the antenna, the radio frequency unit, the first central processing unit and the first data interface; wherein,

the radio frequency unit processes the received data and transmits the processed data to the first central processing unit;

the first central processing unit receives the processed data, judges whether the digital television receiving terminal is connected to the mobile communication terminal or not, and transmits the data to the first data interface if the digital television receiving terminal is connected to the mobile communication terminal according to the judgment result;

the first data interface receives the processed data transmitted by the first central processing unit and transmits the processed data to the digital television receiving terminal;

the first data interface also receives return data transmitted by the digital television receiving terminal and transmits the return data to the first central processing unit; and the first central processing unit processes the return data, transmits the processed return data to a radio frequency unit, and transmits the return data to the mobile communication network front-end system through the antenna.

12. The data exchange system for digital television according to claim 10, characterized in that: the digital television receiving terminal at least comprises: the user control circuit, the second central processing unit and the second data interface; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the second central processing unit;

the second central processing unit receives the user operation instruction, judges whether the mobile communication terminal is connected to the digital television receiving terminal or not, generates return data if the mobile communication terminal is connected to the digital television receiving terminal according to the judgment result, and transmits the return data to the second data interface;

the second data interface receives the return data and transmits the return data to the mobile communication terminal;

the second data interface also receives data transmitted by the mobile communication terminal and transmits the data to the second central processing unit; and the second central processing unit processes the data and performs corresponding operation.

13. The data exchange system for digital television according to claim 11 or 12, characterized in that: the first data interface and the second data interface are one or more of an infrared interface, a Bluetooth interface and a WIFI interface.

14. A digital television receiving terminal comprises a front-end circuit and a back-end circuit; it is characterized by also comprising at least: the system comprises a user control circuit, a central processing unit and a data interface; the data interface establishes a data transmission link with the mobile communication terminal in a wireless mode; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the central processing unit; the central processing unit receives the user operation instruction, judges whether the mobile communication terminal is connected to the digital television receiving terminal, generates return data if the mobile communication terminal is connected to the digital television receiving terminal according to the judgment result, and transmits the return data to the data interface; the data interface receives the return data and transmits the return data to the mobile communication terminal; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

15. The digital television receiving terminal according to claim 14, wherein: the data interface is one or more of an infrared interface, a Bluetooth interface and a WIFI interface.

16. A data exchange method of a digital television is characterized in that: the data exchange method is based on a mobile communication terminal with a digital television receiving function, and the mobile communication terminal at least comprises a digital television receiving unit and a communication unit connected with the digital television receiving unit; the data exchange method comprises the following steps:

when the mobile communication terminal user operates, the digital television receiving unit of the mobile communication terminal responds to a user operation instruction and generates return data; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

the digital television receiving unit of the mobile communication terminal transmits the return data to the communication unit of the mobile communication terminal;

the communication unit of the mobile communication terminal transmits the return data to the digital television network front-end system through a mobile communication network;

17. The data exchange method of the digital tv as claimed in claim 16, wherein: the communication unit of the mobile communication terminal transmits the return data to the digital television network front-end system through a mobile communication network, and the method comprises the following steps:

after the communication unit of the mobile communication terminal obtains the return data, the return data is processed and transmitted to a front end system of a mobile communication network;

18. The data exchange method of the digital tv as claimed in claim 17, wherein: the processing and transmitting of the return data to the mobile communication network front-end system comprises the following steps:

the communication unit of the mobile communication terminal performs data verification and error correction on the returned data;

and the communication unit of the mobile communication terminal transmits the return data to a mobile communication network front-end system through a mobile communication network.

19. The data exchange method of the digital tv as claimed in claim 16, wherein: when the digital television network front-end system transmits data to the mobile communication terminal, the method further comprises the steps of:

the digital television network front-end system sends the data to a communication unit of the mobile communication terminal through a mobile communication network;

and the communication unit of the mobile communication terminal converts the data and then sends the data to the digital television receiving unit.

20. A data exchange system of a digital television comprises a digital television network front-end system, and is characterized in that: the system also comprises a mobile communication terminal and a mobile communication network front-end system; wherein,

the digital television receiving unit is used for receiving and responding to a user operation instruction, generating return data and transmitting the return data to the communication unit; receiving data transmitted by the communication unit, processing the data and carrying out corresponding operation; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

21. The data exchange system for digital tv as claimed in claim 20, wherein: the communication unit of the mobile communication terminal includes at least: the antenna, the radio frequency unit and the first central processing unit; wherein,

the first central processing unit receives the processed data and transmits the processed data to the digital television receiving unit;

22. The data exchange system for digital tv as claimed in claim 20, wherein: the digital television receiving unit of the mobile communication terminal at least comprises: the user control circuit and the second central processing unit; wherein,

the second central processing unit receives the user operation instruction, generates return data and transmits the return data to the communication unit;

and the second central processing unit also receives the data transmitted by the communication unit, processes the data and carries out corresponding operation.

23. A mobile communication terminal having a digital television receiving function, characterized in that: comprises a digital television receiving unit and a communication unit connected with the digital television receiving unit, wherein,

the digital television receiving unit comprises a front-end circuit, a back-end circuit and also comprises: the user control circuit and the second central processing unit; wherein,

the user control circuit is used for receiving and responding to a user operation instruction and transmitting the user operation instruction to the second central processing unit; the second central processing unit receives the user operation instruction, generates return data and transmits the return data to the first central processing unit of the communication unit; the backhaul data includes: instructions for video-on-demand, data download, user authentication, games or web browsing;

the first central processing unit receives the processed data and transmits the processed data to a second central processing unit of the digital television receiving unit;