The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 13, 2019
Filed:
Nov. 18, 2015
Bolymedia Holdings Co. Ltd., Santa Clara, CA (US);
Xiaoping Hu, Shenzhen, CN;
BOLYMEDIA HOLDINGS CO. LTD., Santa Clara, CA (US);
Abstract
An input device, comprising at least one key position () and a control and readout circuit (). Each key position () is provided with a light transmission window () and a photosensitive device () thereon, the light transmission window () being used for the incidence of an external light, and the photosensitive device () being provided on the light path behind the light transmission window (), the status of the photosensitive device corresponding to the light intensity of the incident external light. The control and readout circuit () is used for resetting and scanning each photosensitive device (), and outputting, according to the scanned status of each photosensitive device (), a key signal indicating whether the corresponding light transmission window () is covered or not. The input device obtains input information by means of sensing the variation of the light intensity, instead of the traditional press input method, enabling, on one hand, a quicker reaction speed and on the other hand requiring no finger press, not only reducing the workload of the finger, but also decreasing the requirement for finger dexterity.