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:
Nov. 07, 2006
Filed:
May. 23, 2002
Keiji Horiuchi, Gifu, JP;
Takatoshi Yoshikawa, Ogaki, JP;
Toshiaki Hioki, Ogaki, JP;
Yoshihiro Hori, Gifu, JP;
Keiji Horiuchi, Gifu, JP;
Takatoshi Yoshikawa, Ogaki, JP;
Toshiaki Hioki, Ogaki, JP;
Yoshihiro Hori, Gifu, JP;
Sanyo Electric Co. Ltd., Osaka, JP;
Abstract
In a cellular phone, a controller stores content data received from a distribution server into a memory. When the content data is to be transmitted to a memory card, a random number key generator generates a license key, and an encryption processing unit encrypts the content data using the license key. The controller transmits encrypted content data to a memory card via a memory card interface. Then, the controller deletes the content data stored in the memory. As a result, distribution of content data that must be deleted when transferring to another apparatus can be facilitated while protecting the copyright.