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Method and device for decoding image sequence by utilizing virtual image picture rearregement

An image decoding and virtual image technology, applied in memory address/allocation/relocation, instrumentation, electrical digital data processing, etc., can solve the problems of increasing hardware cost, reducing the efficiency of reduced instruction set computer, and complex decoding control methods.

Inactive Publication Date: 2007-05-09
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The known technology adopts the practice of decoding twice, and stores it in the decoding buffer with a normal size after decoding once, and stores it in the display buffer with a reduced size after decoding once, but it must be retrieved in the image decoding sequence for the second decoding. This screen makes the decoding control method more complicated
Another known technique is to perform the scaling function with additional direct memory access (DMA) hardware, and transfer the image frame originally stored in the decoding buffer directly to the display buffer, but this will increase the hardware cost
Another known technique is to use the system's RISC to perform the work of reading the decoding buffer and writing the display buffer, but the RISC needs to spend more I / O cycles (I / O cycle), will reduce the performance of the reduced instruction set computer

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  • Method and device for decoding image sequence by utilizing virtual image picture rearregement
  • Method and device for decoding image sequence by utilizing virtual image picture rearregement
  • Method and device for decoding image sequence by utilizing virtual image picture rearregement

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Embodiment Construction

[0032]Please refer to Fig. 1 (a), the present invention is a device for reordering image decoding sequences into image display sequences, including: a parameter generating device 100 for generating control parameters 105; a motion compensation device 110, which is Utilize the first decoded image frame pre-stored in the first buffer 131, and cooperate with the control parameter 105 to generate a virtual image frame 115; the bus 120 is connected to each device of the present invention; the memory 130, see FIG. 2 ( b), wherein the memory 130 includes a first buffer 131 for storing the first decoded image frame of the image decoding sequence; a second buffer 132 for storing the virtual image frame 115; a third buffer 133 for storing The second decoded image frame of the image decoding sequence; the display controller 140 , configured to connect to the second buffer 132 and display the virtual image frame 115 . Wherein the image frames are all transmitted through the bus 120, and t...

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Abstract

In the image display system, under the some conditions the image display system also has need of continuously displaying picture stored in same buffer memory. In order to resolve the above-mentioned problem, it utilizes the insertion of virtual image picture to solve the problem of that the image decode order can be rearranged into the image display order so as to attain the lowest hardware and software requirements.

Description

technical field [0001] The invention relates to an image display system, in particular to the arrangement of compressed image decoding and display sequence in the image display system. Background technique [0002] The CCITT / ISO (International Telegraph and Telephone Consultative Committee / International Organization for Standardization) organization has formulated standard formats for compression and decompression algorithms for still and moving digital images, including JPEG (Joint Photo Coding Expert Group), MPEG (Motion Picture Expert Group) ), H.261, etc. These standards have been widely used in video conferencing, VCD (video disc), DVD (digital video disc), video, on-demand video satellite image transmission, etc., as well as other applications that require the transmission of digital video images. The MPEG standard is formulated by the MPEG committee under the ISO, and its format includes animation, sound, and coding representation methods that combine the two. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/08G06F12/0877
Inventor 朱启诚
Owner MEDIATEK INC