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:
Mar. 17, 2015
Filed:
Oct. 30, 2012
Cheng-zhi LI, Guangdong, CN;
Cheng-Zhi Li, Guangdong, CN;
Fu Tai Hua Industry (Shenzhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
A keyboard includes an input interface, a rotatable infrared emitter, a first counter, a second counter, an infrared receiver, and a processor. The rotatable infrared emitter emits infrared light across the input interface which represents a keyboard. The first counter starts a count at each beginning of the infrared light emission. The second counter starts a count when the infrared emitter rotates to reach a reference direction in each rotating period. The infrared receiver stops the counts of the first counter and the second counter when the infrared receiver receives infrared light reflected from an obstacle. The first counter defines a transmission time of the infrared light. The second counter defines a rotating time. The processor calculates a position of the obstacle on the input interface according to the transmission time, the rotating time, a rotating speed of the infrared emitter, and positions of the infrared emitter and infrared receiver.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile