logo

For the Inventor, By the Inventor

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.:

US 4807206 B1

PDFFull Text
Date of Patent:
Feb. 21, 1989

Filed:

Jan. 12, 1987

Track jump detection system

Applicant:
Inventors:

Mitsuro Moriya, Neyagawa, JP;

Toshiji Kanamaru, Katano, JP;

Kazuharu Shiragami, Hirakata, JP;

Hiroyuki Yamaguchi, Hirakata, JP;

Katsuya Watanabe, Osaka, JP;

Assignee:

Matsushita Electric Industrial Co., Ltd., Kadoma, JP;

Attorney:

Spencer & Frank

Primary Examiner:

Robert L Richardson

Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369 32 ; 369 33 ; 369 44 ; 358907 ;
Abstract

A system for recording or reproducing a signal by focusing and irradiating a light beam on a record carrier from a light source while controlling the light beam to always scan the track on the record carrier is disclosed. A track jump that may occur during recording or reproducing a signal on the record carrier is accurately detected. The reliability of the system is thus improved in such a way as to take appropriate action in case of a track jump.

Find Patent Forward Citations

Moriya, Mitsuro. (1989). Track jump detection system (U.S. Patent No. 4807206). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4807206

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…