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:
Mar. 13, 1990
Filed:
Sep. 23, 1988
Fumihiko Yokogawa, Saitama, JP;
Hiroyuki Hirano, Saitama, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
An optical disk data recording and reproducing apparatus includes variable delay circuits in the recording and reproducing sections of the apparatus. The delay of the reproducing section delay circuit is adjusted when the error ratio determined for a reproduced data signal corresponding to a recorded data signal is greater than a predetermined value. When the error ratio is less than the predetermined value after adjustment of the delay circuit, the delay of the delay circuit in the recording section is adjusted to match the adjusted delay of the reproducing section delay circuit and the delay of the latter circuit is retured to its original value.