Title:
PROJECTION TOUCH CONTROL METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/136989
Kind Code:
A1
Abstract:
A projection touch control method and device, said method comprising: when the projection depth of a projection device changes, according to received reflection light of a projection plane with respect to an invisible laser, updating a projection distance of each projection point on the projection plane with respect to the projection device, the projection distance indicating the position of a projection point on the projection plane (S310); when reflection light of a touch object with respect to the invisible laser is received, determining a changed projection distance, and determining a touch region of the touch object according to the changed projection distance (S320); determining a touch point of the touch object according to the touch region (S330); and when the projection depth of the touch point is smaller than a predetermined distance, responding to the touch operation of the touch object, the projection depth indicating the distance of the touch point with respect to the projection plane (S340). The method can improve the accuracy of projection touch control.
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Inventors:
ZHANG JINGUO (CN)
LIU YUNFENG (CN)
LIU YUNFENG (CN)
Application Number:
PCT/CN2018/099935
Publication Date:
July 18, 2019
Filing Date:
August 10, 2018
Export Citation:
Assignee:
GOERTEK TECH CO LTD (CN)
International Classes:
G06F3/042
Foreign References:
| CN108089772A | 2018-05-29 | |||
| CN103186292A | 2013-07-03 | |||
| CN106610757A | 2017-05-03 | |||
| US20150077399A1 | 2015-03-19 |
Attorney, Agent or Firm:
BEIJING LONGAN LAW FIRM (CN)
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