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. 10, 1984
Filed:
Oct. 30, 1981
Applicant:
Inventors:
Shinichi Tanaka, Kyoto, JP;
Tadashi Abe, Hirakata, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; H04N / ;
U.S. Cl.
CPC ...
369124 ; 358342 ; 358347 ; 369128 ; 369109 ;
Abstract
An optical recording apparatus for recording digital signals controls the pulse length of the recorded signals by delaying either the positive-going edges or the negative-going edges of the digital signals. The edges are delayed by either a logical AND or a logical OR operation between an original digital signal and a delayed signal or between an original digital signal and an output signal from a monostable multivibrator which has been triggered by an edge of the original digital signal.