Communication system, communication device, communication method, and computer program

A communication system and equipment technology, applied in the field of communication systems

Inactive Publication Date: 2012-07-18
SONY GRP CORP
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, if restrictions are imposed on RTT and TTL, content whose copyright is protected existing in a server of a home network at home cannot be accessed from a distance other than the home
[0011] Allowing remote access to content is desirable when user convenience is considered, but this contradicts the interests of content owners desiring copyright protection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Communication system, communication device, communication method, and computer program
  • Communication system, communication device, communication method, and computer program
  • Communication system, communication device, communication method, and computer program

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] Embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0090] A. System Configuration

[0091] The present invention relates to a communication system for securely transmitting content by Remote Access (RA) via an external network such as a WAN. This communication system is basically formed of a server (RA source) that provides content through remote access, and a client (RA sink) that requests content through remote access. In this specification, the AKE process performed at the time of remote access will be referred to as "RA-AKE". Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0092] figure 1 A configuration example of a communication system according to the present invention is schematically shown. In the communication system shown in the figure, the content providing device 10 corresponding to the RA source is arranged in the home,...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Contents can be safely conveyed via an external network, such as a WAN, or through a remote access, while the limit of RTT or TTL is being exceeded. A way to manage a flag used for controlling a remote access to contents is explicitly defined, and further, when the remote access is effected by a content using device, an authentication method is explicitly defined, thereby establishing a content copy-right protection environment based on DTCP-IP in the remote access like a conventional in-home access.

Description

technical field [0001] The present invention relates to a communication system, a communication device, a communication method, and a computer program that prevent illegal use of content in transmission. More particularly, the present invention relates to a communication system, a communication device, a communication method, and a computer program that transmit encrypted content and perform decoding key exchange for the encrypted content according to a predetermined mutual authentication and key exchange (AKE) algorithm. [0002] In particular, the present invention relates to a communication system for securely transferring content via remote access (RA) via an external network such as a WAN, and when exceeding limits as the round-trip delay time (RTT) and the hop count (TTL) of an IP router. Access to communication means, communication methods and computer programs for securely transmitting content, in particular to communication systems, communication means, communication ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): H04L29/06H04N21/835G06F21/10G06F21/44
CPCH04N21/835H04N21/4384H04L2463/101H04L63/10H04L9/0844H04N21/234363H04L9/3273H04N21/6408H04N21/6405H04L12/2663H04L2209/601H04L63/0869H04L9/32H04L9/08G06F21/445
Inventor福井俊治郡照彦中野雄彦小笠原敦子
OwnerSONY GRP CORP