Anti-crosstalk infrared remote control circuit
An infrared remote control and remote control circuit technology, applied in non-electrical signal transmission systems, signal transmission systems, instruments, etc., can solve problems such as misoperation, different angles and distances, and time difference.
Inactive Publication Date: 2013-10-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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- Application Information
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Problems solved by technology
However, since the angles and distances at which the infrared receivers installed on the display panel and the host receive the infrared remote control signals are different, the coded signals formed by the encoding of the first infrared receiver 110 and the second infrared receiver 120 pass through the corresponding first signal When the input port 130 and the second signal input port 131 are transmitted to the micro-processing unit 13, there will be a time difference, which will cause the micro-processing unit 13 to decode the received signal abnormally, thereby causing misoperation
Method used
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[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings.
[0013] See figure 2 , is a circuit diagram of an anti-crosstalk infrared remote control circuit in a specific embodiment of the present invention. The circuit 20 can be applied to an electronic device with an infrared remote control function, and the circuit 20 includes a first remote control circuit 21 , a second remote control circuit 22 and a micro-processing unit 23 . Wherein, the first remote control circuit 21 includes a first infrared receiver 210, and the second remote control circuit 22 includes a second infrared receiver 220, and the first infrared receiver 210 and the second infrared receiver 220 are respectively arranged on the electronic device. In the display panel and the host (not shown), in this embodiment, the first infrared receiver 210 and the second infrared receiver 220 are both an integrated IC, wherein the first infrared receiver 210...
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An infrared remotely controlled circuit employed in an electronic device which includes a display panel and a host machine. The infrared remotely controlled circuitry includes a first remotely controlled circuit, a second remotely controlled circuit, and a microprogrammed control unit (MCU). The first remotely controlled circuit includes a first infrared receiver for mounting in the display panel and a first diode with the cathode connected to a first port of the first infrared receiver. The second remotely controlled circuit includes a second infrared receiver for mounting in the host machine and a second diode with the cathode connected to a first port of the second infrared receiver. The MCU is connected to the anode of the first diode to form a first signal input port and the anode of the second diode to form a second signal input port.
Description
technical field [0001] The invention relates to an infrared remote control circuit, in particular to an anti-crosstalk infrared remote control circuit. Background technique [0002] Existing portable electronic products, such as mobile DVD (DVD-Portable), electronic book (E-book), etc., are equipped with infrared remote controllers to facilitate user operations. At present, most of the display panels and hosts of portable electronic products with infrared remote controllers are connected by rotating shafts, and an infrared receiver is respectively installed on the display panel and the host. , its infrared receiver can receive remote control signals from the infrared remote control in all directions. [0003] See figure 1 , is a circuit diagram of an existing infrared remote control circuit, the circuit 10 includes a first remote control circuit 11 , a second remote control circuit 12 and a microprocessing unit 13 . Wherein, the first remote control circuit 11 includes a ...
Claims
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IPC IPC(8): G08C23/04
CPCG08C23/04
Inventor 唐海东林国彬
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD