CN202495999U - Key board and digital television - Google Patents
Key board and digital television Download PDFInfo
- Publication number
- CN202495999U CN202495999U CN2012200329231U CN201220032923U CN202495999U CN 202495999 U CN202495999 U CN 202495999U CN 2012200329231 U CN2012200329231 U CN 2012200329231U CN 201220032923 U CN201220032923 U CN 201220032923U CN 202495999 U CN202495999 U CN 202495999U
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- keypad
- dtv
- cpu
- button
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Abstract
The utility model provides a key board and a digital television. The key board comprises a plurality of keys and a micro control unit which is connected with the keys and used for carrying out analog sampling on the voltage of the keys, identifying a key being pressed, carrying out analog infrared encoding on the identified key, acquiring and sending infrared signals. The utility model further provides a digital television. By adopting the key board and the digital television provided by the utility model and converting information of a pressed key to IR signals through the MCU, IO port connection wires on hardware can be greatly reduced and wire connecting is made simple. Besides, a CPU uniformly decodes the key board and a remote control receiving head, thereby reducing the consumption of system resources.
Description
Technical field
The utility model belongs to digital TV field, relates in particular to a kind of keypad and DTV.
Background technology
Now DTV, particularly digital TV integrated machine, development at home just is being gesture like a raging fire, and as the conventional means of DTV and user interactions, the use of the keypad on remote controller and the TV set panel is absolutely necessary.In the daily use of DTV, remote controller is mutual capital equipment, and keypad generally uses under situation such as remote controller inefficacy, is effectively replenishing of remote-controller function.
The remote controller of the television set that occurs on the market now and keypad generally are to adopt the mode of encoding and decoding respectively, and they use different hardware receiving circuits, and in software, handle respectively.As shown in Figure 1, each button of keypad 11 all will have with CPU13 and is connected, and whether CPU13 could discern each button and be pressed like this, has caused on the hardware wiring complicated like this, and the consumption that has increased system resource.
Summary of the invention
The purpose of the utility model is to provide a kind of keypad and DTV, makes on the hardware wiring simple, and has reduced the consumption of system resource.
The utility model is achieved in that a kind of keypad, comprises a plurality of buttons; Also comprise micro-control unit; Said micro-control unit is connected with said button, is used for the voltage of said button is carried out the modulus sampling, identifies the button that is pressed; Again the button that recognizes is simulated infrared coding, obtain and send infrared signal.
More excellent, said button is a capacitance key.
The another purpose of the utility model is to provide a kind of DTV, comprises above-mentioned any described keypad.
More excellent, comprising that also remote controller receives head and CPU, said remote controller receives head and is connected with the infrared access interface of CPU with said keypad.
More excellent, also comprise power module, be connected with said CPU, keypad, be CPU, keypad power supply.
More excellent, said micro-control unit is connected with said CPU, with infrared remote control agreement and the remote control user sign indicating number coupling of CPU.
More excellent, said DTV comprises digital TV integrated machine or IPTV.
The keypad and the DTV that adopt the utility model embodiment to provide; Change the key information of pressing into the IR signal through MCU, make that IO mouth line significantly reduces on the hardware, wiring is simple; CPU receives the unified decoding of head to keypad and remote controller, has reduced the consumption of system resource.
Description of drawings
Fig. 1 is the structural representation of a kind of DTV of providing of prior art;
Fig. 2 is the structural representation of a kind of keypad of being provided of the utility model first embodiment;
Fig. 3 is the structural representation of a kind of DTV of being provided of the utility model second embodiment.
Embodiment
For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.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.
The utility model first embodiment provide a kind of keypad, and is as shown in Figure 2, comprises a plurality of buttons 21 and MCU (Micro Control Unit; Micro-control unit) 22, MCU22 is connected with all buttons 21, is used for the voltage of button 21 is carried out the modulus sampling; Identify the button that is pressed; Again the button that recognizes is simulated infrared coding, obtain and send IR (Infrared Radiation, infrared) signal.
Concrete, button 21 is a capacitance key.
The keypad that adopts the utility model embodiment to provide changes the key information of pressing into the IR signal through MCU, makes that IO mouth line significantly reduces on the hardware, and wiring is simple, and CPU receives to keypad and remote controller that head is unified decodes, and has reduced the consumption of system resource.
The utility model second embodiment provide a kind of DTV, and is as shown in Figure 3, comprises the keypad of describing like first embodiment 31, and remote control receives 32, CPU33 and power supply 34.
Keypad 31 is connected with infrared access interface (IR_IN) interface of CUP33; Keypad 31 is used for the voltage of button is carried out the modulus sampling; Identify the button that is pressed, again the button that recognizes is simulated infrared coding, obtain and send the IR_IN interface that the IR signal is given CPU33.Power supply 34 is connected with CPU33, keypad 31, is CPU33, keypad 31 power supplies.
Infrared coding process wherein; Comprise, work out good infrared remote control agreement in advance according to CPU33 and keypad MCU, like the most frequently used NEC agreement; MCU simulates infrared coding to the button that recognizes; This coding guarantees that user code is identical with the used remote controller user code of television set, and sends through the infrared signal that its IO mouth will be finished sign indicating number, and an output that receives with TV remote-control is connected to the IR_IN interface of master chip.
Remote control receives 32 and is connected with infrared access interface (IR_IN) interface of CUP33, and remote control reception 32 is used to receive the IR signal that sends from remote controller, and this signal is sent to the IR_IN interface of CPU33.MCU in the keypad 31 also is used for and CPU33 agreement coupling, and agreement is specially the infrared remote control agreement, like infrared source code agreement.
CPU33 is used to handle the signal that receives.
CPU33 receives 32 to remote control and unifies decoding with the infrared signal of keypad 31.Because it is identical that keypad 31 and remote control receive an infrared signal sequential of 32, the user code of coding is identical, and data format is also consistent, can the upwards mapping of key value of decoding be supplied the application layer software transfer so need not carry out extra processing.
Concrete, this DTV comprises digital TV integrated machine or IPTV.
The DTV that adopts the utility model embodiment to provide; Change the key information of pressing into the IR signal through MCU, make that IO mouth line significantly reduces on the hardware, wiring is simple; Saved master chip keypad key assignments decoder module; Thereby the reduction hardware cost, CPU receives the unified decoding of head to keypad and remote controller, has reduced the consumption of system resource.
The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.
Claims (7)
1. a keypad comprises a plurality of buttons, it is characterized in that; Also comprise micro-control unit; Said micro-control unit is connected with said button, is used for the voltage of said button is carried out the modulus sampling, identifies the button that is pressed; Again the button that recognizes is simulated infrared coding, obtain and send infrared signal.
2. keypad as claimed in claim 1 is characterized in that, said button is a capacitance key.
3. a DTV is characterized in that, comprises any described keypad like claim 1-2.
4. DTV as claimed in claim 3 is characterized in that, comprises that also remote controller receives head and CPU, and said remote controller receives head and is connected with the infrared access interface of CPU with said keypad.
5. DTV as claimed in claim 4 is characterized in that, also comprises power module, is connected with said CPU, keypad, is CPU, keypad power supply.
6. DTV as claimed in claim 3 is characterized in that, said micro-control unit is connected with said CPU, with infrared remote control agreement and the remote control user sign indicating number coupling of CPU.
7. DTV as claimed in claim 3 is characterized in that said DTV comprises digital TV integrated machine or IPTV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200329231U CN202495999U (en) | 2012-02-02 | 2012-02-02 | Key board and digital television |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200329231U CN202495999U (en) | 2012-02-02 | 2012-02-02 | Key board and digital television |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495999U true CN202495999U (en) | 2012-10-17 |
Family
ID=47002209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200329231U Expired - Fee Related CN202495999U (en) | 2012-02-02 | 2012-02-02 | Key board and digital television |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060617A (en) * | 2016-06-17 | 2016-10-26 | Tcl集团股份有限公司 | Key function configuration method and system |
-
2012
- 2012-02-02 CN CN2012200329231U patent/CN202495999U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106060617A (en) * | 2016-06-17 | 2016-10-26 | Tcl集团股份有限公司 | Key function configuration method and system |
| CN106060617B (en) * | 2016-06-17 | 2020-06-19 | Tcl科技集团股份有限公司 | Key function configuration method and 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: 20121017 Termination date: 20150202 |
|
| EXPY | Termination of patent right or utility model |