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. 24, 2012
Filed:
Mar. 09, 2010
Shou Te Wei, Hsin-Chu, TW;
Chang Che Tsai, Hsin-Chu, TW;
Shou Te Wei, Hsin-Chu, TW;
Chang Che Tsai, Hsin-Chu, TW;
Pixart Imaging Inc., Hsin-Chu County, TW;
Abstract
An encoding and decoding method for a microdot matrix includes the steps of: forming a plurality of microdots by encoding based on Reflected Gray Codes in a data region included in each of a plurality of microdot blocks included in a microdot matrix, wherein the microdots corresponding to lower order bits of the Reflected Gray Codes are formed as the outmost microdots in the data region; scanning the microdot matrix to fetch an image and recognizing a microdot group in the date region of each microdot block in the image; and decoding a corresponded coordinate of the image on the microdot matrix according to the microdot block to which the microdot group containing lower order bits of the Reflected Gray Codes belongs.