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:
Jun. 03, 2003
Filed:
May. 14, 2001
Nozomu Ikeda, Tokyo, JP;
Akira Ogino, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
When digital image signals fed in through an input terminal are to be recorded on a disc, medium-related information, such as a serial number recorded in a table of contents of the disc, is read from the disc and is spectrum-spread in a spectrum spreading additional information generating section and then the digital image signals on which the spectrum-spread medium-related information has been superimposed in a spectrum spreading additional information superimposing section are recorded on the disc. When the signals are to be reproduced, the reproduction can be performed only if the medium-related information superimposed on the image signals recorded on the disc is consistent with the medium-related information of the disc on which the image signals are recorded. Thus, copying of the information signals can be limited to copying for private use.