An efficient block-based interpreter for MPEG-4 structured audio

ABSTRACT:In this article a new approach to intellectual property management and protection (IPMP) is described. The novelty of the approach resides in the definition of a new simple language expressly conceived for the platform independent description of IPMP tools. The definition of such an IPMP-structured language can achieve two fundamental goals not fulfilled by current approaches: (1) full interoperability between content protection and decoder platforms originated by different content producer and platform manufacturers and (2) the possibility of renewing IPMP systems whenever needed. The approach is similar to other meta-languages such as Structured Audio, used to describe sound processing and synthesis algorithms. The proposed solution is an alternative to the full standardization of several IPMP algorithms, an approach that cannot achieve full interoperability among different vendors' platforms and does not allow the possibility of renewing IPMP systems. In the proposed technology, platforms supporting the standard IPMP primitives can be configured on the fly to run the appropriate protection algorithm. Ideally a specific IPMP tool can be defined for each content item to be protected. The new approach requires the implementation of a "secure IPMP virtual machine" on the target device. This concept can be derived by means of an extension of the original OPIMA specification enabling the OPIMA virtual machine to manage and execute IPMP structured descriptions. The presence of such a (normative) secure virtual machine on different platforms together with the normative definition of the meta-language can assure a standard execution of the structured description of IPMP systems without the need of cross-platform adaptations. The approach is fully compliant and may be part of an extension of the MPEG-n IPMP frameworks.

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“…A more accurate description and details on such architecture solution can be found in (Zoia and Alberti, 2000).…”

Section: B the Virtual Ipmp System (Vis)mentioning

confidence: 99%

Intellectual property management and protection for MPEG multimedia content: A structured language for interoperable IPMP systems

Alberti

Romeo

Mattavelli

2003

Int J Imaging Syst Tech

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“…Complexity analysis and feedback analysis demonstrated that in most cases an efficient implementation of the SA decoder can be obtained by the design of an extended multimedia DSP, based on a vectorial instruction set [8].…”

Section: The Saint Architecturementioning

confidence: 99%

An audio virtual DSP for multimedia frameworks

Zoia

Alberti

2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221)

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The new MPEG-4 Audio standard provides two toolsets for synthetic Audio generation, Audio processing and multimedia content description called Structured Audio (SA) and BInary Format for Scenes (BIFS). Moving from a systematic analysis of SA and from the implementation of an efficient SA decoder, this paper describes the design of a virtual DSP architecture able to exploit the data level parallelism contained in many typical audio processing algorithms. The proposed virtual DSP architecture shows good performance on general purpose platforms and can be easily adapted and optimized for parallel superscalar devices. The porting and results on a V-LIW DSP device confirm the effectiveness and flexibility of the approach, particularly suitable for standalone embedded solutions.

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An efficient block-based interpreter for MPEG-4 structured audio

Cited by 2 publications

References 5 publications

Intellectual property management and protection for MPEG multimedia content: A structured language for interoperable IPMP systems

Intellectual property management and protection for MPEG multimedia content: A structured language for interoperable IPMP systems

An audio virtual DSP for multimedia frameworks

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