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Content transmission system, device and method

A technology of a transmission system and a transmission device, which is applied to the content transmission system, device and field, and can solve problems such as insufficient consideration

Active Publication Date: 2007-07-18
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the same device, the original data is deleted after the data is recorded in the destination, or the original data is deleted in parallel with the recording of the data in the destination. The state of disconnection in the Sink is not fully considered

Method used

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  • Content transmission system, device and method
  • Content transmission system, device and method
  • Content transmission system, device and method

Examples

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Embodiment Construction

[0134] The invention relates to a content transmission system, which encrypts and transmits information content that needs to be protected for copyright or other purposes according to designated copy control information. A specific example of such a system is content transfer using the HTTP protocol between DTCP-IP devices. Embodiments of the present invention will be described in detail below with reference to the drawings.

[0135] A. System structure

[0136] DTCP-IP-compliant content transmission consists of a Source that sends content and a Sink that receives content and plays or records it. As the content transmission method, download transmission and upload transmission can be considered. The download transmission is to send the content according to the request from the Sink that operates as the client in the download transmission. The upload transmission is based on the request from the Sink that operates as the client. A Sink running as a server sends content.

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Abstract

A content transmission system, device, and method capable of reliably performing a move while preventing content from being disconnected or lost even if a failure occurs in a transmission path during transmission. Sink sequentially records the content being moved to the recording medium. However, the recorded content is unusable until the end processing of the Move is successful. After confirming the end process, the recorded content on the sink side is validated and set to At the same time as the usable state, delete the original content or make it unusable on the source side. Even if a failure occurs in the transmission path, it is possible to move the content while satisfying the conditions stipulated by DTCP.

Description

technical field [0001] The present invention relates to a content transmission system, a content transmission device, a content transmission method, and a computer program for transmitting digitized AV data and other content between devices, and in particular to a method for restricting copying between devices for copyright protection and other purposes. A content transmission system, a content transmission device, a content transmission method, and a computer program for encrypted transmission of content. [0002] In further detail, the present invention relates to a content transmission system, a content transmission device, a content transmission method, and a computer program for performing encrypted content transmission procedures between information devices that comply with DTCP, and particularly relates to a method that uses the DTCP MOVE function from Source A content delivery system, a content delivery device, a content delivery method, and a computer program for movi...

Claims

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Application Information

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IPC IPC(8): H04N7/16H04N7/167H04L9/30
Inventor 中野雄彦岛久登
Owner SONY CORP