CN201315094Y - Realization circuit for remote control code reused by function keystroke - Google Patents
Realization circuit for remote control code reused by function keystroke Download PDFInfo
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- CN201315094Y CN201315094Y CNU2008202130654U CN200820213065U CN201315094Y CN 201315094 Y CN201315094 Y CN 201315094Y CN U2008202130654 U CNU2008202130654 U CN U2008202130654U CN 200820213065 U CN200820213065 U CN 200820213065U CN 201315094 Y CN201315094 Y CN 201315094Y
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- function button
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- 230000036039 immunity Effects 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model discloses a realization circuit for a remote control code reused by a function keystroke, which comprises a microprocessor, a remote control receiver and a function keystroke panel; the remote control receiver is used for receiving remote control signals, and the output end thereof is connected to one I/O port of the microprocessor; and the function keystroke panel is provided with a plurality of function keystrokes, and the output end thereof is connected with the output end of the remote control receiver; keystroke signals output by the function keystroke are the remote control code for reusing the remote control signals; and a pull-up resistor is also connected to the output end of the function keystroke board. The utility model saves the resources, improves the interference immunity of products, and has the advantages of modular implementation and good portability.
Description
Technical field
The utility model relates to signal control circuit, especially relates to the realization circuit of the multiplexing remote control coding of a kind of function button.
Background technology
In household appliances such as televisor and monitor, being arranged at function button and being used on the main frame carries out straighforward operation to main frame telepilot all is indispensable ingredient.With the televisor is example: telepilot sends the infrared ray through coding, televisor demodulates the remote control coding pulse after receiving by infrared remote control receiver, interrupt input from the I/O port of the microprocessor (MCU) of televisor, the MCU decoding processing draws the remote control mode information that receives.
And the realization circuit of function button on main frame roughly has two kinds:
Realize circuit as shown in Figure 1 for first kind, corresponding different function buttons 31, the different voltage of function button plate 30 outputs on the main frame, the microprocessor 20 of main frame utilizes the AD port processing to obtain key information (KEY).This realization circuit has following defective: must take an AD port of the microprocessor 20 of main frame, waste resource undoubtedly, and for increasing low-voltage 1.2V power supply chip, the precision of voltage dividing potential drop is not easy to guarantee.
Another kind is realized circuit as shown in Figure 2, and it is to utilize the IIC communication to transmit different key informations (KEY) to microprocessor 20.This realization circuit has following defective: except that having taken valuable resource, increased the Processing tasks of the microprocessor of main frame; And, make the modularization, portable bad of system because at present the microprocessor of main frame adopts the work that different schemes is come the processing capacity button.
The utility model content
Technical problem to be solved in the utility model is the realization circuit that proposes the multiplexing remote control coding of a kind of function button, to economize on resources, increases the portability that function button is realized circuit.
For solving technical matters of the present utility model, the utility model discloses the realization circuit of the multiplexing remote control coding of a kind of function button, comprising: microprocessor; Be used to receive the receiver of remote-control sytem of remote signal, its output terminal is connected an I/O port of described microprocessor; Be provided with the function button plate of a plurality of function buttons; The output terminal of described function button plate connects the output terminal of described receiver of remote-control sytem; And the push button signalling of described function button output is the remote control coding of multiplexing described remote signal.
More excellent, the input end of described receiver of remote-control sytem connects operating voltage; The output terminal of described function button plate also connects an end of a pull-up resistor, and the other end of this pull-up resistor connects described operating voltage.
More excellent, described operating voltage is 5V or 3.3V.
More excellent, described microprocessor is MCU.
Compared with prior art, the utlity model has following beneficial effect:
Function button of the present utility model and remote control receiving unit have only taken an I/O port of microprocessor, have saved resource; Adopt the multiplexing remote control coding of function button can also improve the anti-interference of product, solve the big problem of voltage dividing potential drop error effect that adopts; Simultaneously, because the function button on the main frame can adopt modular arrangement, as long as remote control coding is identical, just can realize with the different platform of electrical equipment generally, main frame does not need to change, and compares with former scheme, needed design effort has reduced, and can improve the research and development progress of product.
Description of drawings
Fig. 1 is first kind of structural representation of realizing circuit of existing capability button;
Fig. 2 is second kind of structural representation of realizing circuit of existing capability button;
Fig. 3 is the structural representation of the realization circuit of the disclosed function button of the utility model.
Embodiment
Owing to the control function of function button is to choose some important relatively on telepilot buttons to design, that is to say, the function that every function button can be realized, telepilot can both be realized.Therefore, the scheme that the utility model adopts is: the signal waveform output of receiver of remote-control sytem is copied in the output of function button, in general is exactly remote control coding.
As shown in Figure 3, receiver of remote-control sytem 10 is used to receive the infrared remote-controlled signal of telepilot output; This receiver of remote-control sytem 10 is connected with the operating voltage of 5V by resistance R 2; And the output terminal of receiver of remote-control sytem 10 is connected on one of them I/O port of the microprocessor 20 that is arranged in the main frame; In addition, be provided with the function button plate 30 of a plurality of function buttons 31, it is connected with the 5V operating voltage, and its output terminal is connected with the output terminal of receiver of remote-control sytem 10; And the output terminal of function button 31 is connected with the operating voltage of 5V by pull-up resistor R1.Wherein, the push button signalling that is arranged at each function button 31 outputs on the function button plate 30 is the remote control coding of the remote signal that produces of multiplexing telepilot.
Receiver of remote-control sytem 10 is exported high level under without any situation about receiving, and under the situation about being pressed without any function button 31, the output terminal of function button plate 30 is also exported high level; Make working alone that receiver of remote-control sytem 10 and function button plate 30 can be independent of each other by pull-up resistor R1 is set: receiver of remote-control sytem 10 demodulates remote control coding with the remote signal that receives, export the I/O port of microprocessor 20 to, perhaps, the key value of some function buttons 31 corresponding remote control codings of function button plate 30 outputs, export the I/O port of microprocessor 20 to, handle by interrupt response by microprocessor 20.
In addition, in at present more novel home appliance, the function button of the touch electric capacity control of adopting usually, it has independently controller (such as MCU), and for consideration handsome in appearance, be more prone to the touch function button that do not punch on the structure, this just provides good prospects for application for the utility model.
Therefore, function button of the present utility model and remote control receiving unit have only taken an I/O port of microprocessor, have saved resource; Adopt the multiplexing remote control coding of function button can also improve the anti-interference of product, solve the big problem of voltage dividing potential drop error effect that adopts; Simultaneously,,, just can realize generally, compare that needed design effort has reduced, and can improve the research and development progress of product with former scheme with the different platform of electrical equipment as long as remote control coding is identical because the function button on the main frame can adopt modular arrangement.
Claims (4)
1, the realization circuit of the multiplexing remote control coding of a kind of function button comprises: microprocessor; Be used to receive the receiver of remote-control sytem of remote signal, its output terminal is connected an I/O port of described microprocessor; Be provided with the function button plate of a plurality of function buttons; It is characterized in that: the output terminal of described function button plate connects the output terminal of described receiver of remote-control sytem; And the push button signalling of described function button output is the remote control coding of multiplexing described remote signal.
2, according to the realization circuit of the multiplexing remote control coding of the described function button of claim 1, it is characterized in that: the input end of described receiver of remote-control sytem connects operating voltage; The output terminal of described function button plate also connects an end of a pull-up resistor, and the other end of this pull-up resistor connects described operating voltage.
3, according to the realization circuit of the multiplexing remote control coding of the described function button of claim 2, it is characterized in that: described operating voltage is 5v or 3.3v.
4, according to the realization circuit of the multiplexing remote control coding of the described function button of claim 1, it is characterized in that: described microprocessor is MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202130654U CN201315094Y (en) | 2008-10-31 | 2008-10-31 | Realization circuit for remote control code reused by function keystroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202130654U CN201315094Y (en) | 2008-10-31 | 2008-10-31 | Realization circuit for remote control code reused by function keystroke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201315094Y true CN201315094Y (en) | 2009-09-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202130654U Expired - Fee Related CN201315094Y (en) | 2008-10-31 | 2008-10-31 | Realization circuit for remote control code reused by function keystroke |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201315094Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102194311A (en) * | 2011-06-03 | 2011-09-21 | 深圳创维照明电器有限公司 | All-in-one remote control device of household electrical appliances and realization method thereof |
| CN102376155A (en) * | 2010-08-13 | 2012-03-14 | 深圳市同方多媒体科技有限公司 | Circuit for controlling electric apparatus functions |
-
2008
- 2008-10-31 CN CNU2008202130654U patent/CN201315094Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376155A (en) * | 2010-08-13 | 2012-03-14 | 深圳市同方多媒体科技有限公司 | Circuit for controlling electric apparatus functions |
| CN102194311A (en) * | 2011-06-03 | 2011-09-21 | 深圳创维照明电器有限公司 | All-in-one remote control device of household electrical appliances and realization method thereof |
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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: 20090923 Termination date: 20091130 |