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:
Jan. 26, 2010
Filed:
Aug. 02, 2001
Yoichiro Sako, Tokyo, JP;
Junichi Kudo, Tokyo, JP;
Yoichiro Sako, Tokyo, JP;
Junichi Kudo, Tokyo, JP;
Sony Corporation, , JP;
Abstract
This invention is directed to a recording medium on which contents data of movie, etc. is recorded. At the position where reproduction is carried out prior to first data consisting of contents data in reproducing the first data, there is recorded second data like advertisement data in which contents concealment data for concealing contents data is buried. In reproduction of the first data recorded on this recording medium, contents concealment data is extracted from the second data, and cipher implemented to the first data which has been read out from the recording medium is decoded by using the extracted contents concealment data. Thus, the first data is reproduced subsequently to the second data.