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:
Apr. 28, 1998
Filed:
Mar. 07, 1996
Toshiyuki Iwai, Yamatokooriyama, JP;
Masahiro Esashi, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A small block having a particular configuration that fills up an information recording area without clearances is set. The small block made up by giving marks of different values to cells arrayed in a direction of at least one row and column is selected as a modulation block. A primary pattern corresponding to recording-object information is extracted in the units of small blocks, the extracted patterns are associated with the modulation pattern in the units of cells in one-to-one correspondence, and their exclusive-ORs are calculated respectively. A secondary pattern is recorded by a process that small blocks composed of marks representing the values of the exclusive-ORs are arrayed in the units in order in the information recording area.