Title:
SIGNAL STRENGTH ADJUSTMENT CIRCUIT, INFRARED TOUCH-CONTROL APPARATUS AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/041509
Kind Code:
A1
Abstract:
A signal strength adjustment circuit, an infrared touch-control apparatus and an electronic device. The signal strength adjustment circuit comprises a signal acquisition circuit (10), a controller (20) and a signal adjustment circuit (30), wherein the signal adjustment circuit (30) comprises a switch element, a first signal end of which is connected to a signal output end of the signal acquisition circuit (10), so as to form a signal voltage division node (40), the signal voltage division node (40) is connected to a signal input end of the controller (20), a second signal end of the switch element is connected to a reference power source, and a controlled end of the switch element is connected to a control end of the controller (20); the controller (20) outputs a corresponding adjustment signal to the controlled end of the switch element according to the strength of a touch-control sampling signal at the current moment; the switch element receives adjustment signals for different strengths to generate different on-resistances; and the signal voltage division node (40) generates touch-control sampling signals of different strengths at the next moment under the voltage division action of output impedances of the signal acquisition circuit (10) and the on-resistances, and transmits the touch-control sampling signals to the signal input end of the controller (20). By means of the circuit, finer signal strength adjustment is realized, and the circuit has a simple structure and is easily implemented.
More Like This:
| WO/2011/138770 | TOUCH SWITCH INTEGRATED ONTO A MODULAR COVERING TILE |
| JP3505277 | INFRARED TOUCH SWITCH |
Inventors:
QIN LIANG (CN)
Application Number:
PCT/CN2023/114189
Publication Date:
February 29, 2024
Filing Date:
August 22, 2023
Export Citation:
Assignee:
GUANGZHOU ZHONGYUAN INTELLIGENT TECH CO LTD (CN)
International Classes:
H03K17/96; G06F3/041; G06F3/042; H03K17/60; H03K17/687
Foreign References:
| CN218850753U | 2023-04-11 | |||
| CN210627166U | 2020-05-26 | |||
| CN113108936A | 2021-07-13 | |||
| CN112799551A | 2021-05-14 | |||
| CN214954937U | 2021-11-30 | |||
| US20210242774A1 | 2021-08-05 |
Attorney, Agent or Firm:
GUANGZHOU JUNCY INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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