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Two-dimensional data memory

A technology of data storage and two-dimensional data, which is applied in the direction of digital storage information, static storage, information storage, etc., and can solve problems such as data loss

Inactive Publication Date: 2009-05-06
ENTROPIC COMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This configuration has the disadvantage that it only allows pure data shifting in the manner of a shift register, whereby after this shift operation data is lost

Method used

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Embodiment Construction

[0028] FIG. 1 shows a two-dimensional data storage according to the invention in schematic form. The data memory has storage elements designed to store one data word in each case. The storage elements are arranged in rows and columns.

[0029] In FIG. 1, each storage element is represented by two numbers, which represent the respective row position and column position of the storage element. The storage elements of the first row of the memory shown in FIG. 1 are represented by numbers (0,0) to (0,7). Accordingly, the memory at the end of the second row is represented as (1,0)~(1,7). Since there are 8 rows in total in this two-dimensional memory, the storage elements of the last row have numbers (7,0) to (7,7).

[0030] According to this logic, the storage elements of the first column of the two-dimensional memory have the numbers (0,7)-(7,7), and the storage elements of the last column have the numbers (0,0)-(7,0).

[0031]FIG. 1 shows data lines for externally supplying a...

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Abstract

A two-dimensional data memory ( 1 ) comprising memory elements which are arranged in rows and columns, which are designed to store in each case one data word, which in the row direction and in the column direction are coupled locally to their respectively adjacent memory elements such that with each control pulse of a row control signal the data words of the memory elements of all rows are shifted in a shift direction into the memory elements of the respectively adjacent row, with the data words of the last row being shifted into the first row, and such that with each control pulse of a column control signal the data words of the memory elements of all columns are shifted in a shift direction into the memory elements of the respectively adjacent column, with the data words of the last column being shifted into the first column, and which are designed such that an external write access is possible only in respect of at least one predefined row and at least one predefined column and such that an external read access is possible only in respect of at least one predefined row and at least one predefined column.

Description

technical field [0001] The invention relates to a two-dimensional data memory comprising storage elements arranged in rows and columns and designed to store in each case one data word. This type of two-dimensional data memory makes it possible to read data words in the row direction or in the column direction. Multiple data words of a row or column are simultaneously read in parallel if necessary. Background technique [0002] If this need arises in traditional one-dimensional memory, the data read must be stored in at least one dimension. Furthermore, address generation in the simulation of two-dimensional memories with a large number of one-dimensional memories is very complex. An example of such a configuration is the memory configuration according to US Patent 6,105,114. [0003] From the publication "A Low-Power IDCT Macrocell for MPEG2 MP@MLExploiting Data Distribution Properties for Minimal Activiy", T. Xanthopoulos and A. Chandrakasan, 1998 Symposium on VLSI Circu...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11C19/00G11C19/38
CPCG11C19/38
Inventor N·诺尔特W·格尔克
Owner ENTROPIC COMM INC
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