CN201509246U

CN201509246U - Voice channel-selecting device based on DVB

Info

Publication number: CN201509246U
Application number: CN2009202368120U
Authority: CN
Inventors: 刘文燕; 孙平
Original assignee: HUIZHOU UNIONMAN TECHNOLOGY Co Ltd
Current assignee: Guangdong Unionman Technology Co Ltd
Priority date: 2009-09-29
Filing date: 2009-09-29
Publication date: 2010-06-16
Anticipated expiration: 2019-09-29

Abstract

The utility model discloses a voice channel-selecting device based on DVB, comprising a running procedure, a set-top box CPU main controller coordinating the work of various parts, a high-frequency head which is connected with the CPU main controller, a memorizer which is used for storing the procedure and data, an output interface and a control panel, meanwhile, the memorizer is provided with a business information form, furthermore, the CPU main controller is connected with a vocalization receiver module which converts the sound wave into analog signals and a voice recognition module which processes the analog signals and is compared with the data in the memorizer. In the utility model, when changing the channels, the tedious, frequent operations are avoided, and the automatic channel-changing and channel-selecting can be conducted through voice, and therefore, the utility model greatly facilitates the using for users.

Description

A kind of voice channel selecting device based on DVB

Technical field

The utility model belongs to the television broadcasting field.

Background technology

Along with progress of science and technology, especially the progress of the communication technology, TV tech is in conjunction with the communication technology, from before simulated television technical development digital television techniques by now, present global digital television techniques is mainly based on DVB (Digital Video Broadcasting, digital video broadcasting) standard evolution and come is play for making digital signal can enter TV, has multiple digital TV set-top box at present.In recent years, along with popularizing of Digital Television, the set-top box that is used to propagate with the converting digital programme signal is also come into huge numbers of families successively, has become the equipment of family's indispensability.

The full name of set-top box is called digital TV set-top box, english abbreviation STB (Set-Top Box).It is a kind ofly to convert digital television signal the conversion equipment of analog signal to, and its sends being reduced into analog signal through image of digitalization compressed and voice signal decoding into common television set, and digital signal can be via satellite, wired or wireless broadcasting transmits.

Digital TV set-top box is a kind of conversion equipment that digital television signal is converted to analog signal, it is to the reduction of decoding through the image of digitalization compressed and voice signal, produce the video and the voice signal of simulation, provide high-quality TV programme to spectators by television indicator and stereo set.Present digital TV set-top box has become a kind of embedded computing equipment, has perfect real time operating system, powerful CPU computing capability is provided, be used for coordinating controller top box each several part hardware facility, and provide easy-operating graphic user interface, as the electronic program guides of enhanced-quality television, provide program introduction and the background information that both pictures and texts are excellent to the user.As shown in Figure 1, digital TV set-top box is carried out bidirectional rebuilding a little by the in house software function with to network, digital TV set-top box can be connected with computer, television set, sound equipment, telephone set etc., realizes as multiple services such as internet browsing, video request program, household electric business, telephone communications.

Why digital TV set-top box can provide so many service, powerful with it and coded system (DVB standard) standard is closely related, its coding structure includes abundant information on services (ServerInformation, be called for short SI), include service information list (SDT) among the SI, deposit channel information such as Business Name, service supplier, this to the user to program store, editor, additions and deletions etc. provide a great convenience.The user obtains channel information by inquiry SDT table, and channel information is stored in certain sequence in the memory stores medium of digital TV set-top box, and the user can obtain watching of this channel program by operation calls corresponding channel information such as remote controls.

The major technique of digital TV set-top box comprises: the modulating-coding of channel-decoding, source coding, upstream data, embedded type CPU, MPEG-2 decompression, set-top box software, demonstration control and scrambling-descrambling technology.As shown in Figure 2, basic circuit structure schematic diagram for present digital TV set-top box, the course of work of this digital TV set-top box: digital television signal enters digital TV set-top box by the Network Interface Module of digital TV set-top box, and carry out demodulation and and channel-decoding handle, output MPEG-2 MPTS data, give demodulation multiplexer, demodulation multiplexer is extracted a program out from the mpeg 2 transport stream data the audio frequency of looking of having packed flows (PES) data substantially, comprise video PES, audio frequency PES and auxiliary data PES, comprise a descrambling engine in the demodulation multiplexer, can carry out descrambling to the data of scrambling in transport stream layer and PES layer, demodulation multiplexer output be descrambling look audio frequency PES.Conditional Access Module is for pay TV, and Conditional Access Module is also implemented descrambling to audio/video flow, and adopts the smart card that contains identification user and memory function, and the assurance validated user is normally watched.Video PES sends into Video Decoder, takes out the MPEG-2 video data and to after its decoding, outputs to analog encoder, is encoded into analog video signal, exports through video output circuit again.Audio frequency PES sends into audio decoder, takes out the MPEG-2 voice data and to its decoding, exports the pcm audio data to audio frequency D/A converter, and audio frequency D/A converter output analog stereo audio signal is exported through audio output circuit.Realize that by embedded type CPU master controller, memory, peripheral interface circuit above content of TV program reappears, realizes functions such as interface operation, realization data broadcast service.The CPU master controller is the heart of digital TV set-top box, and it and memory are used for storing and the operating software system, and each hardware module is controlled.Peripheral interface circuit provides abundant external interface, comprises USB (universal serial bus) USB, Ethernet interface and RS232, simulation, digital video-audio interface, data-interface etc.

But because program various (surpassing 100 programs), many users are very not familiar to the loaded down with trivial details relatively operation of Digital Television, many users often oneself like the program watched by browsing just to choose after whole program channels, frequently changed the platform serious waste user's quality time, caused inconvenience to the user.

The utility model content

The technical problems to be solved in the utility model provides a kind of voice channel selecting device based on DVB that can realize the voice channel selection.

For solving the problems of the technologies described above, the utility model by the following technical solutions:

A kind of voice channel selecting device based on DVB, comprise the set-top box CPU master controller that is used for working procedure, coordinates each several part work, be connected in tuner on the CPU master controller, be used for stored program and memory of data, output interface and control panel, in memory, deposited service information list, and, on the CPU master controller, also be connected with sound wave be converted to the sounding receiver module of analog signal and Analog signals and with memory in the voice recognition module that compares of data.

Loaded down with trivial details, frequent operating process when the utility model has avoided TV to change platform can be undertaken from moving platform, channel selection by voice, is very easy to the user and uses.

Description of drawings

Accompanying drawing 1 is the schematic diagram that the digital TV set-top box of prior art is connected with other electronic equipment;

Accompanying drawing 2 is the basic circuit structure schematic diagram of the digital TV set-top box of prior art;

Accompanying drawing 3 is the electrical block diagram of the set-top box of utility model better embodiment;

Accompanying drawing 4 is the utility model program channel Stored Procedure figure;

Accompanying drawing 5 is the use flow chart of the utility model voice channel selection.

Embodiment

For the ease of those skilled in the art's understanding, the utility model structural principle is described in further detail below in conjunction with specific embodiment and accompanying drawing:

As described in accompanying drawing 3, the voice channel selecting device essence based on DVB that present embodiment disclosed is an integrated set-top box of voice channel selection function, this device comprises and is used for working procedure, coordinate the set-top box CPU master controller 1 of each several part work, on the CPU master controller, be connected with the tuner 2 that connects the cable TV signal network, be used for stored program and memory of data 3, output interface 5 and control panel 6, in memory 3, deposited service information list, and, on the CPU master controller, also be connected with the sounding receiver module 8 that sound wave is converted to analog signal, Analog signals and with memory in play the buffer 4 of buffer memory effect when the voice recognition module 7 that compares of data and program running.Wherein, control panel 6 is used to provide the human-computer interaction function of necessity, and output interface 5 is used to provide the audio-video signal of normally watching program.

The utility model program channel Stored Procedure figure as shown in Figure 4 again, set-top box can be searched for the useful signal of corresponding TV network before use automatically, remove to obtain network information table (NIT table) wherein behind the locking transmission frequency, in the NIT table, obtain the frequency point information of description, frequency removal search one by one again, obtain Program Association Table (pat table), pat table has been described the identification of data packets (PID) of corresponding Program Map Table (PMT), obtained the audio frequency and video PID that has described each program in the pmt table, remove to grab service content description list (SDT table) at last, in the SDT table, find business description information, programm name for example, the program supplier manipulates its position that is stored in formulation for inquiry etc.NIT table, pat table, pmt table, PID, SDT epiphase close data and all are stored in the holder.Sounding receiver module in the utility model and voice recognition module all can adopt the existing module that is commercially available, and do not give unnecessary details at this.

Accompanying drawing 5 is the use flow chart of the utility model voice channel selection for another example, opening voice channel selection switch when the user need use the voice channel selection, 8 of sounding receiver modules can receive the sound that the user sends, the data that sounding is transformed into by voice recognition module 7 are sent in the CPU master controller 1, CPU master controller 1 calls the program channel information of having stored data is carried out correction process, if a certain channel designation in the program channel of the data of speech recognition and storage is consistent, then directly jumps to this channel confession user and watch; If a plurality of channels in the program channel of recognition data and storage are close, then all close channels of column selection and with it with letter sequence easy to identify such as numeral, the user then can choose target channel by sounding once more.For example, the user says " Guangdong satellite TV ", and the channel table that this device recognizes storage has only a channel designation consistent with it, then directly jumps to Guangdong satellite TV platform; If the user says " Guangdong TV station ", the channel table that this device recognizes storage has " Guangdong satellite TV ", " the Guangdong Zhujiang River " close with it, then list " 1, Guangdong satellite TV; 2, the Guangdong Zhujiang River " to select for the user, this moment, the user said that by sounding " 1 " then can select Guangdong satellite TV platform, said that " 2 " then select Guangdong Zhujiang River platform.

It more than is the preferable implementation of the utility model; in addition, the utility model can also have other concrete implementations, need to prove; in any conspicuous replacement that does not break away under the utility model utility model design prerequisite, all within the utility model protection range.

Claims

1. voice channel selecting device based on DVB comprises:

The set-top box CPU master controller (1) that is used for working procedure, the work of coordination each several part, be connected in tuner (2) on the CPU master controller, be used for stored program and memory of data (3), output interface (5) and control panel (6), in memory, deposited service information list, it is characterized in that:

On the CPU master controller, also be connected with sound wave be converted to the sounding receiver module (8) of analog signal and Analog signals and with memory in the voice recognition module (7) that compares of data.