CN201123054Y - Digital television receiving terminal - Google Patents
Digital television receiving terminal Download PDFInfo
- Publication number
- CN201123054Y CN201123054Y CNU2007201217177U CN200720121717U CN201123054Y CN 201123054 Y CN201123054 Y CN 201123054Y CN U2007201217177 U CNU2007201217177 U CN U2007201217177U CN 200720121717 U CN200720121717 U CN 200720121717U CN 201123054 Y CN201123054 Y CN 201123054Y
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- CN
- China
- Prior art keywords
- digital television
- demodulator
- receiving terminal
- locking device
- frequency locking
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Abstract
The utility model provides a digital television receiver terminal, which is suitable for the digital television field. The digital television receiver terminal comprises at least two frequency-locking devices, a demodulator, at least one multiplexer and a decoder, wherein, each frequency-locking device respectively locks and receives signal flow with different types and formats; the demodulator is connected with the frequency-locking device and is used for demodulating the signals output by the frequency-locking devices; the multiplexer is connected with the demodulator and is used for de-multiplexing the signal flows demodulated by the demodulator; the decoder is connected with the multiplexer and is used for decoding the outputting signal flows de-multiplexed by the multiplexer. In the embodiment of the utility model, all the programmes with different signal types such as cable, satellite and ground etc. simultaneously can be watched through adding a hardware device on the prior digital television receiver terminal, and therefore, the resource utilization ratio is improved greatly.
Description
Technical field
The utility model belongs to digital TV field, relates in particular to a kind of receiving terminal for digital television.
Background technology
Set-top box can be divided into three classes: subhost, ground machine and wired machine.Wherein, subhost can only receive satellite programming, and the ground machine can only receive the program on ground, and wired machine can only receive wired program.
The transport stream that existing single set-top box removes to lock the respective signal Format Type by a tuner, for example subhost is locked the transport stream of corresponding frequency by tuner, and this stream received in the set-top box, the miscellaneous equipment of again this transport stream being transferred in the set-top box goes to handle, and for the transport stream on ground or wired transport stream, then can not be pinned, cause the waste of resource like this by this subhost tuner.
The utility model content
The purpose of this utility model is to provide a kind of receiving terminal for digital television, is intended to solve the monistic problem of the signal that receiving terminal receives in the prior art.
The utility model is achieved in that a kind of receiving terminal for digital television, and described receiving terminal for digital television comprises:
At least 2 frequency locking devices, each frequency locking device locks and receives the signal flow of dissimilar forms respectively;
Demodulator is connected with described frequency locking device, and the signal flow that described frequency locking device is exported carries out demodulation;
At least one demodulation multiplexer is connected with described demodulator, and the signal flow after the described demodulator demodulation is carried out demultiplexing; And
Decoder is connected with described demodulation multiplexer, and the signal flow of described demodulation multiplexer demultiplexing output is decoded.
In the utility model embodiment, by on existing receiving terminal for digital television, increasing hardware unit, realize watching simultaneously all programs of unlike signal type, resource utilization has been improved on for example wired, satellite and ground etc. greatly.
Description of drawings
Fig. 1 is the structure chart of the receiving terminal for digital television that provides of the utility model;
Fig. 2 is the structure chart of the digit preference television receive terminal that provides of the utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model embodiment, by on existing receiving terminal for digital television, increasing hardware unit, just can watch all programs of unlike signal type simultaneously, resource utilization has been improved on for example wired, satellite and ground etc. greatly.
Fig. 1 shows the structure of the receiving terminal for digital television that present embodiment provides, and for convenience of explanation, only shows the part relevant with the utility model embodiment among the figure.
In the present embodiment, receiving terminal for digital television is a set-top box.This receiving terminal for digital television comprises at least 2 frequency locking devices, demodulator, at least one demodulation multiplexer and decoder.This frequency locking device is connected with demodulation multiplexer by demodulator, and this demodulation multiplexer is connected with decoder, wherein, the signal of frequency locking device locking and reception corresponding types form, demodulator carries out demodulation to the signal flow of frequency locking device output; The signal flow of at least one demodulation multiplexer after to the demodulator demodulation carries out demultiplexing; Decoder is decoded to the signal flow of demodulation multiplexer demultiplexing output, at last this signal flow is outputed to playing device and carries out video playback.
In the present embodiment, above-mentioned receiving terminal for digital television also comprises a controller, and this controller is connected with frequency locking device, is used for controlling the operating state of frequency locking device, i.e. the switch of control figure tuner.
Above-mentioned receiving terminal for digital television comprises 2 frequency locking devices at least, can adopt a plurality of frequency locking devices such as 3,4, the number of the number control decision demodulation multiplexer of this frequency locking device, and these at least 2 frequency locking devices can corresponding demodulation multiplexer certainly.As a preferred embodiment of the present utility model, when adopting 3 frequency locking devices, these 3 frequency locking devices need corresponding 3 demodulation multiplexers accordingly.In the utility model embodiment, frequency locking device is digital tuner, and for convenience of explanation, the example that provides 3 digital tuners of employing below in conjunction with accompanying drawing is described.
In the present embodiment, above-mentioned signal comprises satellite-signal, wire signal or ground signal, and this signal can also comprise the signal of other types form certainly.
Receiving terminal for digital television as shown in Figure 2 only illustrates the part relevant with present embodiment.The digital tuner 11 of receiving terminal for digital television, digital tuner 12 and digital tuner 13 are connected with demodulation multiplexer 15, demodulation multiplexer 16 and demodulation multiplexer 17 respectively by demodulator 14, and above-mentioned 3 demodulation multiplexers are by being connected with decoder 18; Numeral tuner 11,12,13 all also is connected with controller 19.Wherein, digital tuner 11,12,13 receives the signal of dissimilar forms respectively, for example digital tuner 11 receiving satellite signals, and digital tuner 12 receives wire signal, and digital tuner 13 receives ground signal.
As an embodiment of the present utility model, the operating state of controller 19 control figure tuners 11,12,13, promptly this controller 19 is can control figure tuner 11,12,13 all in running order; Can certainly control one of them work, for example in running order when control figure tuner 11, and digital tuner 12,13 is in closed condition, i.e. satellite receiver; Certainly two digital tuners of these controller 19 controls are in running order, and another one is in closed condition.
As a preferred embodiment of the present utility model, the operating state of controller 19 control figure tuners 11,12,13 is all in running order, and digital tuner 11 receiving satellite signals, numeral tuner 12 receives wire signal, and digital tuner 13 receives ground signal, numeral tuner 11,12,13 locks and receives the data-signal of corresponding types form respectively according to frequency points corresponding, and this data-signal is sent on the demodulator 14,14 pairs of data-signals that receive of demodulator carry out demodulation, are mainly finished mould/number conversion at this demodulator 14.Data after demodulation is finished after the demodulation is to demodulation multiplexer 15,16,17, and demodulation multiplexer 15,16,17 public identifier according to data-signal decompose, and resolves into three kinds of basic streams: video stays, audio stream and data flow; For example send data-signal to demodulation multiplexer 15 behind the signal that demodulator 14 demodulation numeral tuner 11 receives, other is similar, is not giving unnecessary details; Demodulation multiplexer 15,16,17 is sent to decoder 18 with the data-signal behind the demultiplexing, 18 pairs of data-signals of decoder are decoded, this decoder 18 mainly is the separation of data-signal behind the demultiplexing being carried out video, audio frequency and data code flow, and the decoding of video codes, generate the audio frequency and video digital signal.
In addition, adopt more than above-mentioned 3 frequency locking devices and go frequency locking to receive the workflow of data-signal of dissimilar forms and the description of mode such as above-mentioned embodiment, repeat no more.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (3)
1. a receiving terminal for digital television is characterized in that, described receiving terminal for digital television comprises:
At least 2 frequency locking devices, each frequency locking device locks and receives the signal flow of dissimilar forms respectively;
Demodulator is connected with described frequency locking device, and the signal flow that described frequency locking device is exported carries out demodulation;
At least one demodulation multiplexer is connected with described demodulator, and the signal flow after the described demodulator demodulation is carried out demultiplexing; And
Decoder is connected with described demodulation multiplexer, and the signal flow of described demodulation multiplexer demultiplexing output is decoded.
2. receiving terminal for digital television as claimed in claim 1 is characterized in that described receiving terminal for digital television also comprises a controller, is connected with described frequency locking device, controls the operating state of described frequency locking device.
3. receiving terminal for digital television as claimed in claim 1 is characterized in that, described frequency locking device is a tuner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217177U CN201123054Y (en) | 2007-07-20 | 2007-07-20 | Digital television receiving terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201217177U CN201123054Y (en) | 2007-07-20 | 2007-07-20 | Digital television receiving terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201123054Y true CN201123054Y (en) | 2008-09-24 |
Family
ID=40010294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201217177U Expired - Fee Related CN201123054Y (en) | 2007-07-20 | 2007-07-20 | Digital television receiving terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201123054Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244038A (en) * | 2014-09-19 | 2014-12-24 | 四达时代通讯网络技术有限公司 | Set top box system |
-
2007
- 2007-07-20 CN CNU2007201217177U patent/CN201123054Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104244038A (en) * | 2014-09-19 | 2014-12-24 | 四达时代通讯网络技术有限公司 | Set top box system |
| CN104244038B (en) * | 2014-09-19 | 2017-12-29 | 北京四达时代软件技术股份有限公司 | Set-top-box system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080924 Termination date: 20150720 |
|
| EXPY | Termination of patent right or utility model |