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.:

US 8726397 B1

PDF
Full Text
Expired
Date of Patent:
May. 13, 2014

Filed:

Nov. 17, 2010
Applicants:

Ken-ichi Shibata, Osaka, JP;

Takuya Nishimura, Osaka, JP;

Inventors:

Ken-ichi Shibata, Osaka, JP;

Takuya Nishimura, Osaka, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 21/00 (2013.01);
U.S. Cl.
CPC ...
Abstract

When a control unit of a content receiver causes to write out content to an exchangeable medium, causes to also write out a viewing license of the content to the exchangeable medium, and further causes an invalidating/validating unit to invalidate a viewing license of related content belonging to a same predetermined content group as the content if a viewing time limit of the content is not determined. When a content reproducer reproduces the content recorded in the exchangeable medium, determines the viewing time limit of the content and records it to the exchangeable medium. When the exchangeable medium which is reproduced by the content reproducer is installed, the control unit causes to set a viewing time limit of the related content to the same time limit as the viewing time limit of the content on the exchangeable medium and causes to validate the viewing license of the related content.


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