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. 08, 2008
Filed:
Mar. 18, 2004
Hiroyuki Yabuno, Osaka, JP;
Hironori Deguchi, Osaka, JP;
Hiroyuki Yabuno, Osaka, JP;
Hironori Deguchi, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A digital modulation apparatus capable of generating a modulated code so that binary slice is correctly performed when reproducing is provided. To achieve this, in a digital modulation apparatus (A), a DSV change amount calculator () calculates change amounts (ΔDSVa, ΔDSVb) in DSVs of candidate modulated codes (CODEa, CODEb) generated by a modulated code generator (). A modulated code determinator () compares the change amounts (ΔDSVa, ΔDSVb), and determines that the candidate modulated code having a smaller absolute value should be selected as a modulated code (CODE). A modulated code selector () selects one of the candidate modulated codes (CODEa, CODEb) which is determined by the modulated code determinator (), and outputs the selected code as a modulated code (CODE) for source data (DATA).