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| What is claimed is: 1. Apparatus for recording program material from a source of program material ... |
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| System for generating, distributing and receiving an interactive user interface |
| The invention is an information distribution system comprising a head end wherein a user interface ... |
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| MPEG transport stream remultiplexer |
| OF THE INVENTION FIG. 2 shows a remultiplexer 100 according to an embodiment of the present ... |
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| MPEG transport stream remultiplexer |
| OF THE INVENTION FIG. 2 shows a remultiplexer 100 according to an embodiment of the present ... |
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| Apparatus and method for multiplexing with small buffer depth |
| It is known that the delay introduced by a multiplexing system increases when buffer sizes or depth ... |
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| Adaptive rate control for insertion of data into arbitrary bit rate data streams |
| The present invention provides a method and apparatus for adaptive control of the rate of data ... |
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| Brandwidth optimization of video program bearing transport streams |
| These and other objects are achieved according to the present invention. An illustrative ... |
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| Method and system for emulating and HTTP server through a broadcast carousel |
| OF EXEMPLARY EMBODIMENTS Interactive Television Architecture Interactive television provides a way ... |
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| Display control apparatus and method and display apparatus |
| The present invention has been made in consideration of the above-mentioned problems, and has as ... |
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Method and system for accessing packetized elementary stream data
| Details |
Inventors: Kovacevic, Branko; Kechichian, Kevork;
Assignee: ATI Technologies, Inc. (Markham, CA)
Primary Examiner: Hsu; Alpus H.
Assistant Examiner:
Attorney, Agent or Firm:
In accordance with a specific aspect of the present invention, a compressed video stream, such as an MPEG-2 video stream, is received by a transport demultiplexor, synchronized, parsed into separate packet types, and written to buffer locations external the demultiplexor. Adaptation field is handled by a separate parser. In addition, primary elementary stream data can be handled by separate primary elementary stream parsers based upon the packet identifier of the primary elementary stream. Video packets can be parsed based upon stream identifier values. Specific packets of data are stored in one or more system memory or video memory buffers by an output controller based upon allocation table information. Private data associated with specific elementary streams or packet adaptation fields are repacketized, and written to an output buffer location. In specific implementations, the hardware associated with the system is used to acquire the data stream without any knowledge of the specific protocol of the stream. In another embodiment, the hardware is used to implement a splicing of streams of data. |
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DETAILED DESCRIPTION OF THE DRAWINGS In a specific embodiment of the present invention a method for storing data is disclosed.
The method comprises receiving a first transport packet of a plurality of transport packets, where each transport packet of the plurality of transport packets has a transport packet header and a payload.
The transport packet header includes a data packet identifier identifying a specific stream of data, and the specific stream of data has a header and payload.
The header includes a stream identifier to identify a type of payload associated with the stream of data.
Wherein the first transport packet has a first data packet identifier associated with a first stream of data and at least a portion of the header of first stream of data.
Parsing the first transport packet's header to retrieve the data packet identifier.
Parsing the first transport packet's payload to retrieve the stream identifier of the first stream of data, and storing the first data packet's payload based upon the stream identifier of the first stream of data.
The present invention is best understood with reference to the specific embodiments illustrated in Figures herein.
Specifically, FIG.
5 illustrates a transport stream core 400 (TS core), Video Memory 471, and System Memory 472.
In operation, the TS core 400 receives transport stream packets.
Each packet is synchronized to the TS core 400, and demultiplexed.
Each packet is demultiplexed based upon its Packet IDentifier (PID), which identifies the type of data carried in the packet.
The TS core 400 is bufferless in that no packet data is stored within the TS core 400 for access by video or system processing.
Instead, the demultiplexed data is stored in one or more locations within each of the Video memory 471, and the system memory 472.
Transport Stream Core 400 includes a Framer 410, Transport Packet Parser 420 (TPP), a PES Parser (PESP) 430, Adaptation Field Parser (AFP) 450, Buffer Controller 460, and register set 480.
The register set 480 is further illustrated in FIG
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