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:
Apr. 26, 2016
Filed:
Oct. 05, 2007
Kazunari Fujiwara, Osaka, JP;
Yasushi Ayaki, Osaka, JP;
Takuya Nishimura, Osaka, JP;
Abstract
A data transmission and reception system and the like are provided, which are capable of preventing: unauthorized copying between a server and a client; and unnecessary use limit when a copyright constraint is conformed. A server generates and manages overall use permission information indicating that the overall data accumulated in the server can be used and distributes the overall use permission information together with copied data to the client determined to exist within a private use range. The client manages the overall use permission information and the data received from the server in such a manner associated with each other and enables use of the data received from the server only when the overall use permission information is valid. When the client moves only within the private use range, the server continuously manages the overall use permission information so as to enables use of the copied data. Meanwhile, use of the copied data in the client which has moved out of the private use range is inhibited.