CN201048428Y - Two-way control circuit and set up box equipped with the circuit - Google Patents
Two-way control circuit and set up box equipped with the circuit Download PDFInfo
- Publication number
- CN201048428Y CN201048428Y CNU2007200231779U CN200720023177U CN201048428Y CN 201048428 Y CN201048428 Y CN 201048428Y CN U2007200231779 U CNU2007200231779 U CN U2007200231779U CN 200720023177 U CN200720023177 U CN 200720023177U CN 201048428 Y CN201048428 Y CN 201048428Y
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- receiving circuit
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- signal receiving
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Abstract
The utility model discloses a two-way control circuit and the set-top box having the circuit. The utility model includes a main processor and a remote control signal-receiving unit. An IR infrared signal receiving circuit and a RF radio frequency signal receiving circuit are contained in the remote control signal-receiving unit, and the IR infrared signal receiving circuit and an RF radio frequency signal receiving circuit respectively and correspondingly receive wireless remote control signals sent by an infrared remote control and a radio frequency control, and send the signals to the main processor after processing the signals. The two-way control circuit of the utility model has simple structure and low cost, can receive wireless remote control signals sent by two controls simultaneously, can realize that one set-top box gets connected with and controls a plurality of TV sets when being applied to a set-top box circuit, facilitates the indoor layout of the family users possessing a plurality of TV sets, and lightens the economic burden of users.
Description
Technical field
The utility model belongs to the set-top box technique field, specifically, relates to a kind of can be applicable in the set-top box circuit, in order to realize the control circuit of two-way remote control receiving function.
Background technology
Along with the maturation gradually of digital technology, the TV signal of more and more national becomes digital signal from analog-signal transitions gradually, and set-top box is as the transitional product from the simulated television to the Digital Television, and present market demand is very big.Existing set-top box all is connection mode one to one mostly, promptly a set-top box can only connect a television set, control a television set output TV programme, this makes the user who disposes multiple TV set in those families must purchase the playing programs requirement that many set-top box could satisfy multiple TV set simultaneously, not only bad for the simplification layout designs of present fashion home, and increased the weight of consumer's financial burden.Therefore, how to design and aly can connect and control one of multiple TV set simultaneously to drag the multimachine top box be the direction that present vast set-top box manufacturer is endeavoured to study.By the one drag two set-top box, realize connecting two television sets simultaneously by a set-top box, and the program of two television sets is watched and can be controlled respectively, this just needs set-top box can receive infrared remote-controlled signal (IR signal) from two remote controllers simultaneously, and handle respectively, the IR signal communicates by the IR mouth of the used master chip of set-top box.But one of two IR input port of master chip have been stored the device bus and have taken, and only surplus next IR mouth can only receive one road IR signal.Therefore, how improving on the basis of existing set-top box circuit, receive when realizing a set-top box to the multichannel remote signal, and then realize output control to multiple TV set, is one of subject matter that needs to be resolved hurrily at present.
The utility model content
The utility model is in order to solve the existing man-to-man connection mode of set-top box, a kind of novel set-top box two-way control circuit is provided, has made a set-top box can receive the two-way remote signal simultaneously, and multiple TV set is controlled, circuit structure is simple, and cost is low.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of two-way control circuit comprises primary processor and remote-control-signal reception unit; In described remote-control-signal reception unit, include first signal receiving circuit and secondary signal receiving circuit, correspondingly respectively receive the remote signal of sending from first remote controller and second remote controller, and export described primary processor to after it is handled.Wherein first signal receiving circuit can be an infrared signal receiving circuit, and the secondary signal receiving circuit can be the radiofrequency signal receiving circuit, corresponding, first remote controller is an Infrared remote controller, second remote controller is a RF remote.
Further, in described radiofrequency signal receiving circuit, include radiofrequency signal and receive change-over circuit, become the UART asynchronous serial data to connect the generic asynchronous serial bus interface of described primary processor the RF conversion of signals that receives.
Further again, in described radiofrequency signal reception change-over circuit, include a radio frequency signal receiver and a signal converter, described radio frequency signal receiver receives the RF radiofrequency signal of sending from RF remote, it is carried out converting the input that the wire transmission signal connects described signal converter to after the demodulation process, described signal converter is the data of UART form with the conversion of signals that receives, by its output output, connect the generic asynchronous serial bus interface of described primary processor.
Preferably, described signal converter can adopt a chip microcontroller.
Further, the output of described IR infrared signal receiving circuit connects the IR input interface of described primary processor.
Based on above-mentioned two-way control circuit, the utility model has proposed a kind of set-top box with described two-way control circuit again, described set-top box is provided with two-way tuner and two-way audio and video output interface, the primary processor of set-top box inside is the main process chip that includes the two-way decoding channels, one road decoding channels receives remote signal by the IR input interface, and another road decoding channels receives remote signal by the generic asynchronous serial bus interface; The audio-video signal input terminal of two-way decoding channels connects one to one with the data output end of two-way tuner respectively, its audio-video signal lead-out terminal connects one to one with described two-way audio and video output interface respectively, can connect outside two television sets by described two-way audio and video output interface, realize independent control two television sets.
Compared with prior art, advantage of the present utility model and good effect are: two-way control circuit of the present utility model is simple in structure, with low cost, can receive wireless remote control signal simultaneously from two kinds of remote controllers, be applied to realize easily in the set-top box circuit of the connection control of a set-top box to multiple TV set, make things convenient for many TVHHs user's indoor arrangement, alleviated user's financial burden.
Description of drawings
Fig. 1 is the theory diagram of the two-way control circuit that proposes of the utility model;
Fig. 2 is the circuit theory diagrams of signal converter among Fig. 1.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Referring to shown in Figure 1, in two-way control circuit of the present utility model, include primary processor and remote-control-signal reception unit; Include an IR infrared signal receiving circuit and a RF radiofrequency signal receiving circuit in described remote-control-signal reception unit, can receive the wireless remote control signal that sends from two kinds of remote controllers respectively: a kind of is the IR infrared remote-controlled signal that sends from Infrared remote controller; Another kind is the wireless RF radiofrequency signal of sending from RF remote.Wherein, after described IR infrared signal receiving circuit carries out encoding process to the IR infrared signal that receives, generate digital signal, and then connect the IR input interface of primary processor, realize the reception of primary processor the IR infrared signal by its output output.In described RF radiofrequency signal receiving circuit, then include a radiofrequency signal of forming by RF radio frequency signal receiver and signal converter and receive change-over circuit.Described RF radio frequency signal receiver receives the RF radiofrequency signal of sending from RF remote, and it is carried out converting the wire transmission signal to after the demodulation process, as IR signal or pulse signal etc., connects the input of described signal converter; Described signal converter is the data of UART form with the conversion of signals that receives, by its output output, and then the generic asynchronous serial bus interface UART of connection primary processor, to realize the reception of primary processor to the RF radiofrequency signal.
Because in present set-top box circuit, the two-way IR input interface one tunnel of primary processor has been stored the device bus and has taken, and therefore, can only receive remote signal by remaining one road IR input interface.For this reason, above-mentioned two-way control circuit is applied in the described set-top box circuit, utilize residue one road IR input interface of primary processor to connect the output of described IR infrared signal receiving circuit, utilize wherein one road UART interface of primary processor to connect the output that described radiofrequency signal receives change-over circuit, receiving function when just can realize a set-top box easily to two kinds of remote signals.
Above-mentioned set-top box is if use in the subscriber household that only disposes a television set, then the audio frequency and video input interface with television set is connected with the audio and video output interface of set-top box, and the user can control television set by Infrared remote controller or RF remote.
Above-mentioned set-top box then connects one to one by the two-way audio and video output interface of set-top box and the audio frequency and video input interface of two television sets if use in the subscriber household that disposes two television sets.Because the IR infrared signal transmission is apart from weak point, RF radiofrequency signal penetration capacity is strong, long transmission distance, and therefore, and set-top box is placed on same the television set in the room and can utilizes Infrared remote controller to control; An other television set then can utilize RF remote to carry out far distance controlled.
Above-mentioned set-top box also can receive two RF remote-controlled signals simultaneously, wherein one tunnel radiofrequency signal receives and is converted to the IR signal by a wireless signal receiver, be transferred to infrared signal receiving circuit then, another road radiofrequency signal then is converted into the UART signal and is transferred to primary processor.
It should be noted that: only include one road decoding channels in one road tuner, the primary processor if only include in above-mentioned set-top box circuit, the TV programme of two television sets broadcasts that then link to each other with set-top box is identical.If want to realize the independent control of two television sets, then need in described set-top box circuit, the two-way tuner be set, the process chip that primary processor should be selected to include the two-way decoding channels at least realizes.Wherein, first via decoding channels receives the remote control command of sending from Infrared remote controller by the IR input interface, and the second road decoding channels receives the remote control command of sending from RF remote by UART generic asynchronous serial bus interface; The audio-video signal input terminal of two-way decoding channels connects one to one with the data output end of two-way tuner respectively, its audio-video signal lead-out terminal respectively with set-top box on the two-way audio and video output interface connect one to one, connect outside two television sets by described two-way audio and video output interface, realize independent control two television sets.
Certainly, more multichannel audio-video frequency output interface can also be set on described set-top box, like this can be easily be connected with multiple TV set more.Consider and generally also only place a television set in the room, therefore, on the audio-video signal lead-out terminal of first via decoding channels, connect one tunnel audio and video output interface, control a television set output TV programme; Connect the multichannel audio-video frequency output interface and on the audio-video signal lead-out terminal of the second road decoding channels, walk abreast, respectively be placed on chummery not in television set be connected, can be easily set-top box be carried out far distance controlled by RF remote at chummery not.But it should be noted that: the TV programme of exporting by a plurality of television sets of RF remote control is identical.
Among Fig. 2, exemplify a kind of embodiment of signal converter in the utility model, can adopt a slice small single sheet machine D102 to realize.Suppose that the RF radio frequency signal receiver is the output of IR signal with the RF conversion of signals that receives, then single-chip microcomputer D102 receives described IR signal by its I/O interface P0.4, utilize its inside programming to be converted into the data-signal RDA of UART form, TXD exports to described primary processor by its transmitting terminal.In addition, the power end VDD of described single-chip microcomputer D102 is through filter capacitor C101 connection+3.3V DC power supply; Reset terminal RST receives reset signal SINGLECHIP_RST; The plug-in crystal oscillator Y101 of RXD and P0.2 port, shaking frequently can be chosen as 4MHz or 6MHz, and capacitor C 102, C103 are ceramic disc capacitor, and the correction of error frequently is used to shake.
Two-way control circuit of the present utility model makes full use of the reception that UART interface that primary processor vacates is realized the second tunnel remote signal, not only circuit structure is simple, cost is low, and can realize easily helping the complete machine performance quality of elevator top box by of the connection control of a set-top box to multiple TV set.
Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (10)
1. two-way control circuit, comprise primary processor and remote-control-signal reception unit, it is characterized in that: described remote-control-signal reception unit comprises first signal receiving circuit and secondary signal receiving circuit, respectively corresponding the reception from first remote signal and second remote signal, and export described primary processor to after it is handled.
2. two-way control circuit according to claim 1 is characterized in that: described first signal receiving circuit is an infrared signal receiving circuit, and described secondary signal receiving circuit is the radiofrequency signal receiving circuit.
3. two-way control circuit according to claim 2 is characterized in that: described radiofrequency signal receiving circuit comprises a signaling conversion circuit, and described signaling conversion circuit converts the radiofrequency signal that receives to the 3rd signal and is transferred to primary processor.
4. two-way control circuit according to claim 3 is characterized in that: described the 3rd signal is the UART asynchronous serial data, and described UART asynchronous serial data is transferred to described primary processor by the generic asynchronous serial bus interface of described primary processor.
5. according to arbitrary described two-way control circuit among the claim 2-4, it is characterized in that: described remote-control-signal reception unit also comprises a signal receiver, and this signal receiver receives described first remote signal and is converted into infrared signal and sends to described infrared signal receiving circuit.
6. set-top box with two-way control circuit, comprise primary processor and remote-control-signal reception unit, it is characterized in that: described remote-control-signal reception unit comprises first signal receiving circuit and secondary signal receiving circuit, respectively corresponding the reception from first remote signal and second remote signal, and export described primary processor to after it is handled.
7. set-top box according to claim 6 is characterized in that: described first signal receiving circuit is an infrared signal receiving circuit, and described secondary signal receiving circuit is the radiofrequency signal receiving circuit.
8. set-top box according to claim 7 is characterized in that: described radiofrequency signal receiving circuit comprises a signaling conversion circuit, and described signaling conversion circuit converts the radiofrequency signal that receives to the 3rd signal and is transferred to primary processor.
9. set-top box according to claim 8 is characterized in that: described the 3rd signal is the UART asynchronous serial data, and described UART asynchronous serial data is transferred to described primary processor by the generic asynchronous serial bus interface of described primary processor.
10. according to arbitrary described set-top box among the claim 6-8, it is characterized in that: described remote-control-signal reception unit also comprises a signal receiver, and this signal receiver receives described first remote signal and is converted into infrared signal and sends to described infrared signal receiving circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200231779U CN201048428Y (en) | 2007-06-11 | 2007-06-11 | Two-way control circuit and set up box equipped with the circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200231779U CN201048428Y (en) | 2007-06-11 | 2007-06-11 | Two-way control circuit and set up box equipped with the circuit |
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| Publication Number | Publication Date |
|---|---|
| CN201048428Y true CN201048428Y (en) | 2008-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200231779U Expired - Fee Related CN201048428Y (en) | 2007-06-11 | 2007-06-11 | Two-way control circuit and set up box equipped with the circuit |
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| CN (1) | CN201048428Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917564A (en) * | 2010-08-12 | 2010-12-15 | 圆刚科技股份有限公司 | Television card/box and ratio frequency remote control receiving device |
| CN101877164B (en) * | 2009-04-30 | 2012-01-25 | 骏升科技（扬州）有限公司 | RF module used for replacing IR module on infrared receiving equipment and application thereof |
| CN103729997A (en) * | 2012-10-12 | 2014-04-16 | 海尔集团公司 | Dual-frequency remote controller and its control method |
| CN105025372A (en) * | 2015-08-07 | 2015-11-04 | 成都市斯达鑫辉视讯科技有限公司 | Set top box with channel screening function |
| CN108600808A (en) * | 2018-04-24 | 2018-09-28 | 青岛海信电器股份有限公司 | Signal processing method and device, television set |
-
2007
- 2007-06-11 CN CNU2007200231779U patent/CN201048428Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877164B (en) * | 2009-04-30 | 2012-01-25 | 骏升科技（扬州）有限公司 | RF module used for replacing IR module on infrared receiving equipment and application thereof |
| CN101917564A (en) * | 2010-08-12 | 2010-12-15 | 圆刚科技股份有限公司 | Television card/box and ratio frequency remote control receiving device |
| CN103729997A (en) * | 2012-10-12 | 2014-04-16 | 海尔集团公司 | Dual-frequency remote controller and its control method |
| CN105025372A (en) * | 2015-08-07 | 2015-11-04 | 成都市斯达鑫辉视讯科技有限公司 | Set top box with channel screening function |
| CN108600808A (en) * | 2018-04-24 | 2018-09-28 | 青岛海信电器股份有限公司 | Signal processing method and device, television set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080416 Termination date: 20110611 |