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:
Feb. 17, 2015
Filed:
Apr. 02, 2014
Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Ya-Guo Wang, Shenzhen, CN;
Chun-Ching Chen, New Taipei, TW;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precision Industry Co., Ltd., New Taipei, TW;
Abstract
Method for detecting presses on buttons of an electronic device with a reduced number of General Purpose In/Out (GPI/O) ports includes a number of the GPI/O ports The number of the buttons is greater than the number of the GPI/O ports. A proportion of the buttons are each coupled between one of the I/O ports and ground, and the remaining proportion of the buttons are each coupled between any two of the I/O ports. The GPI/O ports are set to work in a first working state or in a second state to provide a first signal or second signal respectively. When a signal provided by a GPI/O port working at the first working mode changes, the method determines which one of the buttons has been pressed.