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:
Jan. 31, 2006
Filed:
Oct. 02, 2001
Applicants:
Yen-chang Chiu, Taipei, TW;
Chin-nan Wu, Tainan, TW;
Inventors:
Yen-Chang Chiu, Taipei, TW;
Chin-Nan Wu, Tainan, TW;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/94 (2006.01); H03M 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An input apparatus using multidimensional electrodes to define key functions and the encoding method thereof is peculiarized by utilizing N-dimensional electrodes to define the individual key functions, where N is a positive integer number greater than two. The keyboard scan process according to the present invention is to perform the scan on the coordinate electrodes one by one and save the scan codes for making a synthetic determination, so as to identify the key being pressed. The keyboard encoder IC using the keyboard scan process of the present invention is advantageous to the pin number reduction and cost descent.