CN2836363Y

CN2836363Y - Digital set-top box mother-son machine system for CATV

Info

Publication number: CN2836363Y
Application number: CNU200520130378XU
Authority: CN
Inventors: 王晋豫
Original assignee: BEIJING ORIENTVIEW TECHNOLOGY Ltd
Current assignee: Beijing Orient View Technology Co Ltd
Priority date: 2005-11-02
Filing date: 2005-11-02
Publication date: 2006-11-08
Anticipated expiration: 2015-11-02

Abstract

The utility model discloses a kind of cable television digital set-top box master/slave system that is used for, comprise: machine tool (1), handset (2) and a universal splitter (3) with isolation features, machine tool comprises machine tool remote controller (17), infrared receiving module (18), control unit module (7), condition receives IC-card slot and IC-card (19), receive decoder module (9), handset comprises handset remote controller (11) and infrared receiving module (12), machine tool (1) is connected by described splitter (3) and subscribers feeder with handset (2), and machine tool also comprises audio frequency and video distributor circuit (10) and general-purpose device rf modulations module (8).The utility model adopts technique scheme to reduce cost for the user, is more convenient for the family that many Digital Television are used at a family.

Description

A kind of primary and secondary unit of digital set-top box system that is used for cable TV

Technical field

The utility model belongs to the digital television receiving apparatus field, particularly a kind of cable television digital set-top box composite aircraft that is applicable to the many TV user in a family.

Background technology

Along with the raising of living standards of the people, increasing family has had the television set more than.Simultaneously, increasing cable TV network begins transmitting digital TV signal, and digital TV set-top box also begins to enter family as the condition receiving equipment of necessity.Yet most of top box of digital machine production firms and Virtual network operator are only considered user's a television set, do not have good solution for the user of the many TVs in a family.Be that every television set must be equipped with a top box of digital machine, generally give a top box of digital machine when the user registers, the required set-top box of other television set of this user needs to buy separately, its objective is to guarantee that legal registered user can watch digital television program.

Top box of digital machine manufacturer does not provide primary and secondary type top box of digital machine solution cheaply mostly at present, when the user need watch identical digital program by second television set, perhaps need to increase very big input and buy a top box of digital machine separately, perhaps need the top box of digital machine on first television set moved and receive on second television set, this has brought great inconvenience for use of user.Therefore, will cause the user significantly to increase like this with the cost of many TV watching digital television programs.

The utility model content

The purpose of this utility model is to exist use cost to increase, use weak points such as inconvenience for overcoming in the prior art when using Digital Television, and the utility model provides a kind of primary and secondary unit of digital set-top box that is used for cable TV.

The utility model is that to address the above problem the technical scheme that is adopted as follows: a kind of primary and secondary unit of digital set-top box system that is used for cable TV, comprise machine tool, handset and a universal splitter with isolation features, described machine tool comprises that machine tool remote controller, infrared receiving module, control unit module, condition receive IC-card slot and IC-card, reach the reception decoder module, and described handset comprises handset remote controller and infrared receiving module; Machine tool is connected by described splitter and subscribers feeder with handset, and described machine tool also comprises audio frequency and video distributor circuit and general-purpose device rf modulations module;

Described audio frequency and video distributor circuit, it is machine tool to be received decoder module output audio-video signal be divided into two-way;

Described rf modulations module, it is that described one road audio-video signal is modulated into radiofrequency signal;

Described audio frequency and video distributor circuit has two outputs, its input links to each other with the output of described reception decoder module, output directly links to each other with the audio frequency and video input of TV by the audio frequency and video output port of machine tool, and another output links to each other with the input of described rf modulations module.The output of the rf modulations module in the described machine tool links to each other with described general-purpose device splitter by subscribers feeder.

Described universal splitter (3) with isolation features is two splitters or multiple branches device.

The infrared receiving module of described handset and machine tool also can be the receiver module of other wireless mode.The remote controller of described handset and machine tool can be general.

Principle of the present utility model is: the primary and secondary type digital set-top box system of employing, the subscribers feeder that is contained handset, the Infrared remote controller of infrared receiving module and connected machine tool, handset and splitter by a top box of digital machine machine tool that comprises audio frequency and video distributor circuit and rf modulations module, general splitter, constitutes.Infrared receiving module in the handset, the control signal with Infrared remote controller sends reaches machine tool by subscribers feeder, splitter, directly controls machine tool and operates.Audio frequency and video distributor circuit in the machine tool send first broadcast of television set audio frequency and video input port, another road to send the rf modulations module that it is modulated into radiofrequency signal descrambling, demultiplexing, decoded audio-video signal one tunnel, be back to handset by a certain empty channel by subscribers feeder, handset is directly sent second television set without any processing.

The beneficial effects of the utility model are:

1. guaranteeing that the digital television signal transmission simultaneously reliably, primary and secondary type top box of digital machine solution cheaply is provided, the user just can watch on another television set by using universal splitter and low-cost handset, has avoided the individual digit set-top box to use the inconvenience that causes for a family multimachine TV user;

2. only do not make transparent transmission because the radiofrequency signal that handset transmits machine tool is not carried out any processing, just machine tool is passed in the instruction that remote controller is sent, so the cost of handset is very low, has tangible price advantage;

3. Virtual network operator need not customize particular device for it when the user registered, and saved human and material resources and time, helped promoting;

4. user side is installed and is connected fast simply, only needs the distributor of user family is replaced by universal splitter;

5. back is installed is got final product the machine operate as normal, need not TV user and participate in, do not need to change its use habit fully.

Description of drawings

Below in conjunction with drawings and Examples this patent is described further.

Fig. 1 is a theory diagram of the present utility model.

Fig. 2 is the theory diagram of handset.

Fig. 3 is the theory diagram of machine tool.

Fig. 4 is the theory diagram of splitter.

Fig. 5 is the schematic diagram of audio distribution circuit.

Fig. 6 is the schematic diagram of video distribution circuit.

Embodiment

With reference to Fig. 1, Fig. 1 represents theory diagram of the present utility model.The utility model comprises top box of digital machine machine tool 1, top box of digital machine handset 2 and general splitter 3, the rf inputs 13 of described machine tool 1 is connected with an output 20 of splitter 3 by subscribers feeder 5, and the rf inputs 14 of handset 2 is connected with another output 21 of splitter 3 by subscribers feeder 6.Described machine tool 1 comprises main engine remote control device 17, main frame infrared receiving module 18, control unit module 7, IC-card 19, receive decoder module 9, audio frequency and video distributor circuit 10 and rf modulations module 8, the input of described audio frequency and video distributor 10 links to each other with the output that receives decoder module 9, and two outputs are arranged, output directly links to each other with the audio frequency and video input of television set 22 by the A/V output port 16 of main frame, another output links to each other with the input of described rf modulations module 8, the rf inputs mouth 13 that described rf modulations module 8 and control unit module 7 are all passed through top box of digital machine machine tool 1 connects with subscribers feeder 5, and link to each other with the output 20 of described universal splitter 3, rf modulations module in the machine tool is a prior art, model such as STV-4FM.

Handset 2 comprises handset remote controller 11 and infrared receiving module 12, the receive mode of this module 12 is infrared receive mode, the rf inputs 14 of described infrared receiving module 12 and handset 2 connects, and link to each other by the output 21 of subscribers feeder 6 with described universal splitter 3, the radio-frequency (RF) output end 15 of handset 2 is connected with the input of the radio frequency of television set 23.

Among Fig. 1, two branch's outputs of universal two splitters 3 20,21 are connected with the

rf inputs mouth

13,14 of set-top box machine tool 1 and handset 2 respectively by two

subscribers feeders

5,6, and main output port is owing to there not being the reverse isolation function free time need not.The radio-frequency (RF) output end mouth 15 of handset is connected with television set 23 by radio frequency line.In the set-top box machine tool, the radiofrequency signal of input is carried out descrambling through receiving decoder module 9, demultiplexing, after the decoding processing, the output audio-video signal enters audio frequency and video distributor circuit 10, described audio frequency and video distributor circuit 10 is divided into two-way with this signal, the radio-frequency (RF) output end mouth 16 of machine tool of leading up to directly send the audio frequency and video input of television set 22 to broadcast, another route control unit 7 controls enter rf modulations module 8, rf modulations module 8 is modulated into radiofrequency signal with this audio-video signal and transmits at a certain empty frequency, and oppositely return to two splitters 3 by this subscribers feeder 5, because the isolation features of splitter, signal can reach the rf inputs 14 of handset 2 through subscribers feeder 6 by port 21, and through the radio-frequency (RF) output end 15 of handset 2 directly the output rf inputs mouths that enter another television set 23 of user play.

With reference to Fig. 1, Fig. 2, Fig. 3, the infrared remote receiver 12 of handset is after receiving the control signal that remote controller 11,17 sends, with control signal by subscribers feeder 6, enter two splitters 3, because the isolation features of splitter, control signal can reach the control unit 7 of machine tool through another branch port 20 through subscribers feeder 5, control unit 7 is controlled the audio-video signal of audio frequency and video distributor 10 behind rf modulations module 8 output decoders according to the instruction of remote controller.

Fig. 4 is universal two splitters, has the reverse isolation function, and the TV signal of registering one's residence forward is only passed through, and the control signal of composite aircraft and reverse return path signal B isolate with input signal A in two splitters, make it and can't enter in the network.When only using with a TV, input signal A exports by main output signal C.

Universal splitter with isolation features can be two splitters or multiple branches device, can connect many estrades machine by a plurality of ports like this, is convenient to watching of two above Digital Television.

Fig. 5, Fig. 6 are a kind of circuit theory diagrams of described audio frequency, video distribution circuit.

When TV user was paid dues registration, cable television operators can allot the handset of machine tool and respective numbers by the TV quantity of TV user man.

Claims

1. primary and secondary unit of digital set-top box system that is used for cable TV, comprise machine tool (1), handset (2) and a universal splitter (3) with isolation features, described machine tool comprises machine tool remote controller (17), infrared receiving module (18), control unit module (7), condition receives IC-card slot and IC-card (19), receive decoder module (9), described handset comprises handset remote controller (11) and infrared receiving module (12), described machine tool (1) is connected by described splitter (3) and subscribers feeder with handset (2), it is characterized in that: described machine tool also comprises audio frequency and video distributor circuit (10) and general-purpose device rf modulations module (8);

Described audio frequency and video distributor circuit (10), it is machine tool to be received decoder module (9) output audio-video signal be divided into two-way;

Described rf modulations module (8), it is that described one road audio-video signal is modulated into radiofrequency signal;

Described audio frequency and video distributor circuit (10) has two outputs, its input links to each other with the output of described reception decoder module (9), output directly links to each other with the audio frequency and video input of TV by the audio frequency and video output port of machine tool, and another output links to each other with the input of described rf modulations module (8).The output of the rf modulations module (8) in the described machine tool links to each other with described general-purpose device splitter (3) by subscribers feeder.

2. the primary and secondary unit of digital set-top box system that is used for cable TV according to claim 1 is characterized in that: described universal splitter (3) with isolation features is two splitters or multiple branches device.

3. according to the described primary and secondary unit of digital set-top box system that is used for cable TV of claim 1, it is characterized in that: the control signal receiver module of described handset and machine tool is an infrared receiving device.

4. according to the described primary and secondary unit of digital set-top box system that is used for cable TV of claim 1, it is characterized in that: the control signal receiver module of described handset and machine tool is a radio receiver.