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An image data memory projection method, assess method and device

An image data and memory technology, applied in the computer field, can solve problems such as low memory access efficiency of image data, and achieve the effects of improving memory access efficiency, low memory frequency, and low power consumption

Inactive Publication Date: 2008-07-09
ACTIONS SEMICONDUCTOR
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] Embodiments of the present invention provide a memory projection method, access method and device to solve the problem of low efficiency of memory access to image data in the prior art

Method used

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  • An image data memory projection method, assess method and device
  • An image data memory projection method, assess method and device
  • An image data memory projection method, assess method and device

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Embodiment Construction

[0051] The image data memory projection method, access method, and device provided by the embodiments of the present invention change the existing memory projection in units of image data blocks into memory projection in units of line segments, and the same line segment is stored in one of the memory In a row (row) in the bank, and each row segment is stored in a different bank from other adjacent row segments up, down, left, and right, so that it can ensure that the memory is effectively used in the process of accessing image data. Parallel control between banks shields the preparation time for cross-row operations in the same bank, thereby improving the efficiency of image data memory access.

[0052] The embodiments of the present invention can be applied to any process of projecting and accessing memory, and are especially suitable for applications of real-time access to image data, such as video playback, real-time display of images, and other image processing technologies...

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Abstract

The invention discloses a memory projection method, an access method and a device. The invention comprises the following steps of: dividing each row of the image data of an image into a plurality of row sections, storing the image data in the same row section in the same row of the same bank in a memory and separately storing the image data contained in any two contiguous rows into the different banks in the storage. The image access to the images in the storage has the following steps of: first ensuring the position of the image block in the image, confirming the corresponding bank and the corresponding row section in the corresponding bank of the image data block stored in the storage, and reading the data of the image data block in the corresponding row section of the corresponding bank. The project provided by the inventive embodiment still can screen the preparation time of the storage access via the switch between the banks in the storage and observably improve the storage access efficiency in the concurrence of the image data storage access and other real time storage accesses.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to an image data memory projection method, access method and device. Background technique [0002] In recent years, computer systems, especially embedded computer systems, are increasingly used in video playback. The video playback system mainly includes three main functional modules: file reading, video decoding and video output processing. Among them, the video decoding module and the video output module occupy most of the system memory bandwidth in the whole processing process. [0003] In computer video processing, there are two main ways to access memory: scan line access and image data block access. For the scan row access mode, because it meets the requirements of the continuous burst access mode of the memory, it is easy to obtain high access efficiency. However, in the image data block access method, the row address of the memory needs to be constantly changed, which l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/60H04N7/26
Inventor 黎明
Owner ACTIONS SEMICONDUCTOR
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