An encoding chip and remote control device with integrated button power supply
A remote control device and power supply control technology, applied in signal transmission systems, instruments, etc., can solve the problems of inconvenient PCB board wiring, limited remote control shape, high system cost, etc., and achieve convenient PCB board wiring, high integration, and system low cost effect
Active Publication Date: 2021-03-02
SUZHOU HUAXIN MICROELECTRONICS
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Problems solved by technology
This solution needs to add a triode and some resistors outside the chip, which has disadvantages such as many components, low reliability, high system cost, inconvenient PCB wiring, and limited shape of the remote control.
Method used
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[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.
[0017] Such as figure 1 As shown, an encoding chip with integrated button power supply disclosed in the embodiment of the present invention includes a plurality of pins. In this embodiment, it includes 8 pins (1, 2...8), wherein, combined with the following Table 1 As shown, pin 1 is the input terminal Vcc of the positive terminal of the power supply, pin 2 is the output terminal VDD of the button power supply, pin 3 is the input terminal Vss of the negative terminal of the grounded power supply, pin 4 is the output terminal TXD of the code, pins 5~ 8 are key input terminal K0, key input terminal K1, key input terminal K2 and key input terminal K3 respectively. Each key input terminal is connected with a key. Of course, this embodiment is only a specific example of the present inven...
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The invention discloses an encoding chip and a remote control device with integrated button power supply. The encoding chip is integrated with a button power supply module. The button power supply module includes a power supply control module and a field effect transistor connected with the power supply control module. The power supply control module and the chip The input terminal of the key is connected, and is connected with the positive input terminal of the chip and the output terminal of the key power supply through the field effect transistor. When any one or more of the key input terminals detect that a key is pressed, the power supply control module passes the field effect The transistor sends electricity to the key power supply output terminal to realize key power supply. The invention has the advantages of higher integration, more concise system, high reliability, lower system cost, convenient wiring of PCB board, adaptability to more shapes of remote controllers, and the like.
Description
technical field [0001] The invention relates to a wireless remote control device, in particular to an encoding chip integrated with button power supply and the remote control device. Background technique [0002] The wireless remote control device, also known as the wireless remote control, uses frequency bands such as 315M or 433.92M Hz as the carrier, modulates the coded signal, and sends it out through the antenna. The wireless receiving device realizes the purpose of remote control by receiving the corresponding frequency band signal and demodulating the corresponding signal. [0003] Wireless remote control devices are generally powered by batteries, so low power consumption is required. In order to achieve the purpose of low power consumption, traditional wireless remote control devices add a triode and some resistors to the outside of the traditional coding chip to realize the functions of the remote control device's button power-on, no button power-on (no power cons...
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IPC IPC(8): G08C17/02
CPCG08C17/02
Inventor 石万文韩红娟李小安
Owner SUZHOU HUAXIN MICROELECTRONICS