Invention Grant
- Patent Title: Data transmission apparatus, data reception apparatus, and data transmission and reception system
- Patent Title (中): 数据发送装置,数据接收装置,数据发送接收系统
-
Application No.: US12444055Application Date: 2007-10-05
-
Publication No.: US09325933B2Publication Date: 2016-04-26
- Inventor: Kazunari Fujiwara , Yasushi Ayaki , Takuya Nishimura
- Applicant: Kazunari Fujiwara , Yasushi Ayaki , Takuya Nishimura
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2006-275272 20061006; JP2006-275754 20061006
- International Application: PCT/JP2007/069597 WO 20071005
- International Announcement: WO2008/044647 WO 20080417
- Main IPC: G06F21/00
- IPC: G06F21/00 ; H04N5/913 ; G06F21/10 ; H04N21/254 ; H04N21/258 ; H04N21/4408 ; H04N21/45 ; H04N21/8355

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.
Public/Granted literature
- US20100077488A1 DATA TRANSMISSION APPARATUS, DATA RECEPTION APPARATUS, AND DATA TRANSMISSION AND RECEPTION SYSTEM Public/Granted day:2010-03-25
Information query