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:
Oct. 17, 2006
Filed:
Oct. 10, 2002
Jacobus Petrus Josephus Heemskerk, Veldhoven, NL;
Cornelis Marinus Schep, Eindhoven, NL;
Aalbert Stek, Eindhoven, NL;
Shinichi Tanaka, Kyoto, JP;
Hiromichi Ishibashi, Osaka, JP;
Shigeru Furumiya, Hyogo, JP;
Hiroshi Ogawa, Kanagawa, JP;
Tamotsu Yamagami, Kanagawa, JP;
Shoei Kobayashi, Kanagawa, JP;
Jacobus Petrus Josephus Heemskerk, Veldhoven, NL;
Cornelis Marinus Schep, Eindhoven, NL;
Aalbert Stek, Eindhoven, NL;
Shinichi Tanaka, Kyoto, JP;
Hiromichi Ishibashi, Osaka, JP;
Shigeru Furumiya, Hyogo, JP;
Hiroshi Ogawa, Kanagawa, JP;
Tamotsu Yamagami, Kanagawa, JP;
Shoei Kobayashi, Kanagawa, JP;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Matsushita Electric Industrial Co., LTD, Kadoma, JP;
Sony Corporation, Tokyo, JP;
Abstract
The information such as address is to be efficiently formed into wobble components and further the S/N ratio in reproducing the information formed into the wobble components is to be improved. In an optical disc of the present invention, there are recorded in a wobble the address information modulated in accordance with the MSK (minimum shift keying) system and the address information modulated in accordance with a modulation system in which even harmonics signals are added to a sinusoidal carrier signal and in which the polarity of the harmonics signal is changed depending on the sign of the data for modulation.