Selectable depacketizer architecture

Details Selectable depacketizer architecture Selectable depacketizer architecture

2005-09-13

2005-09-13

Phunkulh, Bob A. (Department: 2661)

Multiplex communications

Communication techniques for information carried in plural...

Assembly or disassembly of messages having address headers

C370S476000

Reexamination Certificate

active

06944185

ABSTRACT:
A scheme is provided that permits the use of a selectable depacketization module to depacketize data streams. An RTP session manager is responsible for receiving RTP packets from a network and parsing/processing them. A depacketizer module is located using the type of data received on the stream. Thus a specific depacketizer is located at runtime depending on the coding decoding scheme (“codec”) used to compress the incoming data stream. A naming convention is followed in order for a specific depacketizer to be located. The depacketizer receives data that has already been parsed and is in a readable form. The depacketizer outputs this data using a well defined interface. This interface has been designed such that it is generic across a number of codecs. The interface passes all relevant information to the decoder where the actual depacketized data stream will be decompressed. The session manager need not know of any codec details since the depacketizer handles all codec specific issues. A default format is described for data that is output by a depacketizer. There is provision for a depacketizer to output data in this pre-defined format. However, there is also a provision for a depacketizer to output data itself in a pre-defined format. This data is provided to a handler that is aware of this format, so that the integration of depacketizers is seamless. Thus, a depacketizer can be made available as long as it implements certain defined interfaces.

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