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Storage device having plural memory banks concurrently accessible, and access method therefor

  • US 6,252,611 B1
  • Filed: 07/23/1998
  • Issued: 06/26/2001
  • Est. Priority Date: 07/30/1997
  • Status: Expired due to Term
First Claim
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1. A storage device for storing an image, comprising:

  • a first memory area which has addresses corresponding to pixels for input image data and which is divided into a plurality of blocks, wherein the blocks are addressable on a block by block basis;

    a second memory area having a smaller memory capacity than said first memory area, said second memory area being divided into the same number of blocks as the number of blocks included in said first memory area, wherein the blocks of said second memory area are addressable on a block by block basis;

    an addressing module for concurrently addressing the blocks of said first memory area according to at least first and second address signals, while concurrently addressing each block in said second memory area according to only part of said first and second address signals; and

    a read and write module for concurrently reading from addresses designated by said first and second address signals in the blocks of said first memory area, and for concurrently writing to addresses designated in the blocks in said first memory area designated by said first and second address signals.

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