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. 27, 2009
Filed:
Dec. 10, 2003
Kenji Sato, Tokyo, JP;
Kenji Sato, Tokyo, JP;
O'z Co., Ltd., Osaka, JP;
Abstract
It is possible to prevent unauthorized use of software such as a game program in download type software distribution for using a program and data by storing them in a user computer in advance. A user downloads a game program of new version (including an accompanying data group) and an execution program from a distribution computer. The execution control program performs authentication by online with an authentication computer and acquires start information required for starting the game program. The execution control program decodes the game program according to the start information and starts it. When the user terminates the game by terminating the game program, the execution control program deletes all or part of the game program so as to incapacitate it.