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:
Aug. 04, 1992
Filed:
Sep. 15, 1989
Toshimasa Hangai, Tokorozawa, JP;
Koichi Ishitoya, Tokorozawa, JP;
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
On a composite CAV/CLV disc, information signals and identification codes indicative of the time-base positions of the information signals are recorded in at least first and second, radially different regions in CAV and CLV formats. To play back the composite CAV/CLV disc, the present position of an information reading spot applied to the disc is detected as a present position code according to an identification code read from the disc, and a destination position to which the information reading spot is to be jumped is detected as a destination position code. Then, the number of tracks to be jumped which corresponds to the difference between the present position code and the destination position code is calculated according to different functions when both the present and destination positions are in one of the first and second regions only and in the other region only. The information reading spot is moved from the present position to the destination position over a distance depending on the calculated number of tracks.