Invention Grant
- Patent Title: Content transmission apparatus, content reception apparatus and content transmission method
- Patent Title (中): 内容发送装置,内容接收装置和内容发送方法
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Application No.: US10846558Application Date: 2004-05-17
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Publication No.: US08010792B2Publication Date: 2011-08-30
- Inventor: Mayuko Tanaka , Hiroo Okamoto , Yoshimichi Kudo
- Applicant: Mayuko Tanaka , Hiroo Okamoto , Yoshimichi Kudo
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Antonelli, Terry, Stout & Kraus, LLP.
- Priority: JP2004-008621 20040116
- Main IPC: H04L9/32
- IPC: H04L9/32

Abstract:
A copyright of a content is protected by preventing creation of illegal copies of the content and the content is prevented from being transmitted beyond a range of personal use in a process to transmit the content through a LAN.Before transmission of a content, a content transmission apparatus and a content reception apparatus perform a determination of authentication information available in a predetermined command accompanying authentication information, or an authentication determination based on a time until reception of a response to a predetermined command request accompanying predetermined authentication information. If the authentication is unsuccessful, the requested content is not transmitted to the content reception apparatus. With such arrangement, it is possible to effectively protect a copyright when a content is transmitted by way of a network.
Public/Granted literature
- US20050160265A1 Content transmission apparatus, content reception apparatus and content transmission method Public/Granted day:2005-07-21
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