CN100399822C - A Digital TV System Interacting Through Mobile Communication Channel - Google Patents

Abstract

The invention discloses a digital television system for interaction through a mobile communication channel, which includes a digital television front-end machine room local end, a mobile communication network front-end machine room, digital TV receiving equipment, a wireless communication base station, and a CATV network. Among them, the central office of the digital TV front-end computer room and the digital TV receiving equipment both have mobile communication functions. The user's uplink control information is transmitted from the digital TV receiving equipment, and sent to the local end of the digital TV front-end computer room through the wireless communication base station and the front-end computer room of the mobile communication network. Send it to the digital TV receiving device, the digital TV receiving device demodulates and displays the video and visual data information, after the user sees it, he can send feedback information through the digital TV receiving device, thus forming a closed loop. Through the present invention, the data exchange service can be performed rapidly without network reconstruction.

Description

A Digital TV System Interacting Through Mobile Communication Channel

Technical field

The invention relates to a digital television system, in particular to a digital television system interactive through a mobile communication channel.

Background technique

With the promotion of digital TV one-way broadcasting and the popularity of set-top boxes, using digital channels to carry out data services will become a new business opportunity for TV operators. Using two-way communication means to carry out fully interactive applications, such as video on demand, ratings statistics, online quiz, mutual text messaging, online chat, interactive advertising, online games, online business, online finance, etc., will make data services a great success .

The above-mentioned interactive services all require an information return channel. The digital TV broadcasting network has multiple methods for data return, such as PSTN MODEM, CABLE MODEM, xDSL, and ETHERNET. The disadvantage is that the speed is slow or network reconstruction is required.

Contents of the invention

The purpose of the present invention is to provide a digital television system that interacts through a mobile communication channel, which can quickly perform data interaction services without network reconstruction.

When realizing the purpose of the present invention, the following technical means have been taken:

The digital TV system includes a local end 1 of a digital TV front-end computer room, a mobile communication network front-end computer room 2 , a digital TV receiving device 3 , a wireless communication base station 4 , and a CATV network 5 .

The digital TV receiving device 3 includes a mobile channel modulator/demodulator 7, a main processor and a display 8. After the user's uplink control information is processed by the mobile communication signaling of the main processor and the display 8, it is modulated by the mobile channel / demodulator 7 modulates and transmits.

The transmission signal is received and processed by the wireless communication base station 4, and then the user's uplink control information is transmitted to the front-end computer room 2 of the mobile communication network, and the data switch in the front-end computer room 2 of the mobile communication network performs information processing and conversion, and then sends it back to the wireless communication network. The base station 4 is transmitted by the wireless communication base station 4 and sent to the central office 1 of the digital TV front-end computer room.

The central office 1 of the digital TV front-end computer room has the function of receiving mobile communication data, so it can receive and process the user's uplink control information, and then send out digital TV service broadcasts.

Digital TV service broadcast signal enters digital TV receiving equipment 3 through CATV network 5, also includes TV channel demodulator 6, infrared receiving head 9, infrared remote controller 10 in the described digital TV receiving equipment 3, TV channel demodulator 6. Turn the digital TV service broadcasting signal into a baseband binary data stream, and send it to the main processor and display 8. In the main processor and display 8, the data stream is demultiplexed and divided into three data streams: audio , video and data, wherein the audio stream is decoded to output an analog audio signal; the video stream is decoded to form a video signal 1, and the data stream is analyzed and processed by the main processor and the display 8 CPU to convert the data into Visual information forms video signal 2. After video signal 1 and video signal 2 are synthesized, an analog video signal is output and displayed. After the user sees the visual data information, the user's feedback information is sent through the infrared remote control 10 , is received by the infrared receiving head 9, and the infrared signal is converted into an electrical signal and sent to the main processor and the display 8. After the main processor and the display 8 are processed by the CPU and the interactive application, the user's feedback information is sent to the mobile communication signal. Then the mobile channel modem 7 is used to modulate and transmit to the wireless communication base station 4. The transmitted signal is received and processed by the wireless communication base station 4, and then the user's uplink control information is transmitted to the front-end computer room 2 of the mobile communication network. The data switch in the front-end computer room 2 of the communication network performs information processing and conversion, and then sends it back to the wireless communication base station 4, and is transmitted by the wireless communication base station 4 to the local terminal 1 in the front-end computer room of the digital TV, thereby forming a closed loop.

Because in the present invention, the uploading information in the data interaction service is carried out through the mobile communication channel, and at present, mobile communication is quite popular, and the service price is also lower and lower. For example, in China, its coverage area has surpassed the digital cable TV network Therefore, the current digital cable TV network does not need to be transformed, and the access cost is also low. This system fully embodies the characteristics of asymmetric transmission, that is, the downlink information with a large amount of information is carried out through the digital cable TV network with a wide frequency band, while the uplink information with a small amount of information is carried out through a mobile communication channel with a relatively narrow frequency band, so the data exchange The speed of business is fast. And since the uplink and downlink are different communication methods, there will be no interference between the two.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is the system block diagram of this system.

Figure 2 is a block diagram of digital TV receiving equipment.

Detailed ways

As shown in Fig. 1 , the digital TV system includes a digital TV front-end computer room local end 1, a mobile communication network front-end computer room 2, a digital TV receiving device 3, a wireless communication base station 4, and a CATV network 5.

As shown in Figure 2, the digital TV receiving device 3 includes a mobile channel modulator/demodulator 7, a main processor and a display 8. After the user's uplink control information is processed by the mobile communication signaling of the main processor and the display 8, It is modulated and transmitted by the mobile channel modulator/demodulator 7.

The transmission signal is received and processed by the wireless communication base station 4, and then the user's uplink control information is transmitted to the front-end computer room 2 of the mobile communication network, and the data switch in the front-end computer room 2 of the mobile communication network performs information processing and conversion, and then sends it back to the wireless communication network. The base station 4 is transmitted by the wireless communication base station 4 and sent to the central office 1 of the digital TV front-end computer room.

The central office 1 of the digital TV front-end computer room has the function of receiving mobile communication data, so it can receive and process the user's uplink control information, and then send out digital TV service broadcasts;

The digital TV service broadcast signal enters the digital TV receiving device 3 through the CATV network 5 . Also include TV channel demodulator 6, infrared receiving head 9, infrared remote controller 10 in the digital TV receiving equipment 3 among Fig. And sent to the main processor and display 8, the data stream is demultiplexed in the main processor and display 8, and three data streams are separated: audio, video and data, and the audio stream is decoded to output analog Audio signal; the video stream in it is decoded to form video signal 1, and the data stream in it is analyzed and processed by the CPU of the main processor and display 8, and the data is converted into visual information to form video signal 2; video signal 1 and video signal After the signal two is synthesized, an analog video signal is output and displayed. After the user sees the visual data information, the feedback information is sent by the infrared remote controller 10, received by the infrared receiving head 9, and the infrared signal is converted into an electric signal. The signal is sent to the main processor and the display 8. After the main processor and the display 8 are processed by the CPU and the interactive application, the user's feedback information is processed by the mobile communication signaling, and then modulated by the mobile channel modem 7 and transmitted to the wireless network. The communication base station 4, the transmission signal is received and processed by the wireless communication base station 4, and then the user's uplink control information is transmitted to the front-end computer room 2 of the mobile communication network, and the data switch in the front-end computer room 2 of the mobile communication network performs information processing and conversion, and then returns It is transmitted to the wireless communication base station 4, and is transmitted by the wireless communication base station 4, and sent to the local end 1 of the digital TV front-end computer room, thereby forming a closed loop.

In this embodiment, traditional mobile communication service functions such as short message service and email service are maintained between the digital TV receiving device 3 and the wireless communication base station 4 and the front-end computer room 2 of the mobile communication network. Because the display device in this system can be much larger than the display area of the mobile phone, and the display performance can be much better, and the operation buttons of the infrared remote control can also be more than the mobile phone, so for the user, no matter from the operation Sex or from the display effect, can be much better. In this embodiment, the digital TV receiving device 3 also includes a microphone and earphones, and the traditional voice telephone service and voice data communication service are maintained between the digital TV receiving device 3 and the wireless communication base station 4 and the mobile communication network front-end computer room 2. Mobile communication service function. In this way, using a set of this system, the functions of multiple devices in the home have been completed, thus making things convenient for users.

Claims (3)

1. A digital TV system that interacts through a mobile communication channel, including a digital TV front-end computer room (1), a mobile communication network front-end computer room (2), digital TV receiving equipment (3), and a wireless communication base station (4) , CATV network (5), it is characterized in that: The digital TV receiving device (3) includes a mobile channel modulator/demodulator (7), a main processor and a display (8), and the user's uplink control information passes through the mobile communication of the main processor and the display (8). After the signaling is processed, it is modulated and transmitted by the mobile channel modulator/demodulator (7); The transmitted signal is received and processed by the wireless communication base station (4), and then the user's uplink control information is transmitted to the mobile communication network front-end computer room (2), and the data switch in the mobile communication network front-end computer room (2) performs information processing and conversion, Then pass it back to the wireless communication base station (4), and send it out by the wireless communication base station (4), and send it to the central office (1) of the digital TV front-end computer room; The central office (1) of the digital TV front-end computer room has a mobile communication data receiving function, so it can receive and process the user's uplink control information, and then send out digital TV service broadcasts; The digital TV service broadcast signal enters the digital TV receiving equipment (3) through the CATV network (5), and also includes a TV channel demodulator (6), an infrared receiving head (9), The infrared remote controller (10), the TV channel demodulator (6) turn the digital TV service broadcast signal into a baseband binary data stream, and send it to the main processor and display (8), and the main processor and display (8) The data stream is demultiplexed and divided into three data streams: audio, video and data. The audio stream is decoded to output an analog audio signal; the video stream is decoded to form a video signal one. The data stream is analyzed and processed by the main processor and the CPU of the display (8), and the data is converted into visual information to form video signal 2. After video signal 1 and video signal 2 are synthesized, an analog video signal is output and displayed. After seeing the visual data information, the user's feedback information is sent by the infrared remote controller (10), received by the infrared receiver (9), and the infrared signal is converted into an electrical signal and sent to the main processor and display (8) Among them, the main processor and the display (8) process the user's feedback information through the mobile communication signaling after processing by the CPU and the interactive application, and then modulate and transmit it to the wireless communication base station (4) through the mobile channel modem (7) , the transmission signal is received and processed by the wireless communication base station (4), the data switch in the front-end computer room (2) performs information processing and conversion, and then is sent back to the wireless communication base station (4), and is transmitted by the wireless communication base station (4) , and send it to the central office (1) of the digital TV front-end computer room, thereby forming a closed loop. 2. A digital television system for interacting through a mobile communication channel according to claim 1, characterized in that said digital television receiving device (3) is connected with a wireless communication base station (4), a mobile communication network front-end computer room (2) ) keep the traditional mobile communication service functions of short message service and e-mail service. 3. A kind of interactive digital television system through mobile communication channels according to claim 1, characterized in that said digital television receiving equipment (3) also includes a microphone and earphones, and said digital television receiving equipment (3) Traditional mobile communication service functions of voice telephone service and voice data communication service are maintained between the wireless communication base station (4) and the mobile communication network front-end computer room (2).

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