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:
Sep. 27, 2005
Filed:
Dec. 10, 2002
Toshiyuki Nakagawa, Kanagawa, JP;
Hiroshige Okamura, Chiba, JP;
Minoru Tobita, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to a modulation apparatus and method and a DSV-control-bit generating method for suppressing an increase in circuit size of the modulation apparatus. When an input data stream is supplied to a DSV control bit determination unit, the DSV control bit determination unitdetermines a DSV control bit to be inserted into the input data stream. Upon supplying the input data stream to the DSV control bit determination unit, the input data stream is simultaneously supplied to a delay processor. The input data stream is delayed for a predetermined delay time and supplied to a determined-DSV-control-bit insertion unit. The determined-DSV-control-bit insertion unitinserts the DSV control bit determined by the DSV control bit determination unitinto a predetermined position of the input data stream supplied by the delay means and supplies the input data stream containing the DSV control bit to a modulator. The modulatormodulates the input data stream containing the DSV control bit into a code string in accordance with a predetermined coding rule (for example, 1,7PP modulation).