Title:
DRIVING CIRCUIT, LIGHT-EMITTING UNIT, TRANSMISSION MODULE, SENSING APPARATUS, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/165820
Kind Code:
A1
Abstract:
Provided in the present application are a driving circuit, a light-emitting unit, a transmission module, a sensing apparatus, and an electronic device. The driving circuit comprises: a first switch, connected between a first power supply and a first node; a single-photon avalanche diode, the single-photon avalanche diode and a sensing light source being connected in series between the first node and the ground; and an energy storage capacitor, connected between the first node and the ground, wherein the energy storage capacitor is configured to receive a voltage from the first power supply via the first switch, when turned on, and store electrical energy and pre-bias a reverse voltage of the single-photon avalanche diode to a preset avalanche voltage, and the energy storage capacitor is further configured to discharge the sensing light source when an avalanche occurs in the single-photon avalanche diode, so as to trigger the sensing light source to emit a sensing light pulse. The light-emitting unit, the transmission module, the sensing apparatus, and the electronic device comprise the driving circuit.
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Inventors:
WANG XIAOMING (CN)
LV CHENJIN (CN)
LI JIAPENG (CN)
LV CHENJIN (CN)
LI JIAPENG (CN)
Application Number:
PCT/CN2021/075889
Publication Date:
August 11, 2022
Filing Date:
February 07, 2021
Export Citation:
Assignee:
SHENZHEN FUSHI TECH CO LTD (CN)
International Classes:
G01S17/10; G01S7/481; G01S7/484; G01S7/4861; G01S7/4863
Foreign References:
| CN211236240U | 2020-08-11 | |||
| CN209805094U | 2019-12-17 | |||
| JP2019068528A | 2019-04-25 | |||
| CN105374832A | 2016-03-02 |
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