Title:
KEY SCANNING METHOD, SCANNING METHOD USED FOR KEY SCANNING CIRCUIT, AND INPUT DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/243952
Kind Code:
A1
Abstract:
Disclosed are a key scanning method, a scanning method used for a key scanning circuit, and an input device. The key scanning method comprises: executing a first scanning program which comprises triggering a first main scanning line and reading electric signals of a plurality of induction signal lines so as to determine whether a key in a first key group is triggered; and then executing a second scanning program which comprises triggering at least one of a plurality of secondary scanning lines and reading the electric signals of the plurality of induction signal lines so as to determine whether a key in a second key group is triggered; wherein the first scanning program and the second scanning program are alternately executed, and each secondary scanning line is triggered at least once.
Inventors:
CHEN XI SHENG (CN)
HSU TE PING (CN)
HSU TE PING (CN)
Application Number:
PCT/CN2019/090357
Publication Date:
December 10, 2020
Filing Date:
June 06, 2019
Export Citation:
Assignee:
DARFON ELECTRONICS CORP (CN)
DARFON ELECTRONICS SUZHOU CO LTD DFS (CN)
DARFON ELECTRONICS SUZHOU CO LTD DFS (CN)
International Classes:
H03M11/20
Foreign References:
| CN105406875A | 2016-03-16 | |||
| CN101257308A | 2008-09-03 | |||
| US20150169101A1 | 2015-06-18 |
Attorney, Agent or Firm:
SHANGHAI BESHINING LAW OFFICE (CN)
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