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:
Jul. 29, 2003
Filed:
Apr. 06, 2000
Toshihiko Takishita, Yamanashi, JP;
Masahiro Kato, Tokorozawa, JP;
Eiji Muramatsu, Tokorozawa, JP;
Kunihiko Horikawa, Tokorozawa, JP;
Shoji Taniguchi, Tokorozawa, JP;
Atsushi Yamaguchi, Tokorozawa, JP;
Pioneer Corporation, Tokyo, JP;
Abstract
An optical recording medium is designed to generate a read signal free from waveform distortion during reproduction of information. The optical recording medium is formed with information tracks on which data pits carrying information data is to be formed, and prepit tracks previously formed with a plurality of prepits. Each of the information tracks and each of the prepit tracks are positioned adjacent to each other, and each of the prepits is formed to be spaced apart from adjacent information tracks in at least its bottom part.