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:
Nov. 11, 1997
Filed:
Mar. 15, 1996
Toshiyuki Iwai, Yamatokooriyama, JP;
Atsushi Aoki, Kashiba, JP;
Masahiro Esashi, Nara, JP;
Hiroaki Niwamoto, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
There is provided a method for recording digital information that, when digital information is recorded as a two-dimensional pattern on a planar recording surface, the digital information can be easily coded and decoded. A specific pattern for representing a location within the recording surface is made up by giving marks in a specified pattern to a plurality of meshes which are adjoined to one another into a specific shape. A rectangular block is composed of a plurality of meshes adjoined to one another longitudinally and transversely into a rectangular shape and has longitudinal and transverse dimensions larger than those of the specific pattern. A segment in which the specific patterns are overlaid in the units of meshes or circumscribed to the rectangular block is set. An information recording area for expressing the two-dimensional pattern is composed by arraying a plurality of the segments without clearances on the recording surface. The digital information to be recorded is divided according to the number of the segments and then resulting pieces of unitary information are recorded into the segments.