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Receiver apparatus for mpeg-4ipmp extended isma media stream

A receiving device and media stream technology, applied in the field of MPEG-4IPMP extension, can solve the problems of incompleteness, hindering interoperability with MPEG-4IPMP extension interchangeable receiver, etc., and achieve the effect of flexible realization

Inactive Publication Date: 2006-09-13
PANASONIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These incompleteness and inconsistency are likely to hinder the interoperability of the ISMA framework and the MPEG-4IPMP extended interchangeable receiver

Method used

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  • Receiver apparatus for mpeg-4ipmp extended isma media stream
  • Receiver apparatus for mpeg-4ipmp extended isma media stream
  • Receiver apparatus for mpeg-4ipmp extended isma media stream

Examples

Experimental program
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Embodiment Construction

[0052] IPMP extended signaling

[0053] The current ISMACryp corresponds to SDP IOD signaling for ISMA-specific and MPEG receivers. Although the ISMA dedicated receiver only accepts the SDPFMTP signaling parameters, the flow of the SDP IOD is protected by ISMACryp (minimum IPMP signaling), and signaling must be made for any MPEG receiver. KMS can signal ISMACryp using only IPMP signaling (basic IPMP signaling) within the SDP IOD.

[0054] In this specification, syntax compatible with MPEG-4IPMP extension is provided. ISMACryp can easily achieve compatibility with MPEG-4 IPMP extensions with minimal effort, and also provides flexible protection schemes.

[0055] Minimum IPMP-X signaling

[0056] IPMP extension, specifies the IPMP tool list (tool list) descriptor in the IOD. The Tool List Descriptor identifies the list of IPMP tools necessary for the flow sequence that will appear later. According to the MPEG-4 IPMP extension, when IPMP protection is present, a Toollist Des...

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Abstract

A receiver, which receives an ISMA media stream that is MPEG-4 IPMP-expanded, is provided with processes of: receiving an ISMA media stream containing an ISMA head, contents and an IPMP tool list descriptor that indicates a method for processing the contents; acquiring the IPMP tool list descriptor from the ISMA media stream; making an inspection as to whether or not the tool indicated by the IPMP tool list descriptor is present in the receiver, and when the tool is present, processing the contents by using the tool, while, when the tool is not present, completing the processes without causing any failure.

Description

technical field [0001] The present invention relates to MPEG-4 IPMP extensions interchangeable for ISMA protection frameworks. Background technique [0002] In recent years, in the field of distribution of media content, guaranteed distribution of video and audio via the Internet has been widely promoted. Various standardization organizations have made great efforts to provide solutions to this problem. Internet Streaming Media Alliance (ISMA: Internet Streaming Media Alliance) is one of such organizations. In order to meet this demand, a framework using existing open standards has been proposed that can be used by providers when constructing video and audio systems that can be used on the IP framework and the Internet. Although the specification assumes the use of existing MPEG technology and mainly focuses on the current MPEG-4 technology, it is also planned to implement changes and amendments including MPEG-2 and MPEG-7 technology in the future. [0003] ISMA also spec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/14H04N7/24H04N7/167
CPCH04N21/8193H04N21/835H04N21/2541H04N21/84H04N21/234318H04N7/1675H04N21/4627H04L9/14H04N21/435H04N7/08H04L9/36
Inventor 吉明刘荆申省梅上野孝文
Owner PANASONIC CORP
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