Semiconductor memory and method of using the same, column decode

Details Semiconductor memory and method of using the same, column decode Semiconductor memory and method of using the same, column decode

1997-09-30

1998-12-08

Nguyen, Viet Q.

Static information storage and retrieval

Addressing

Particular decoder or driver circuit

36523003, 36523001, 365 63, G11C 700

Patent

active

058480200

ABSTRACT:
In a semiconductor memory for storing image data, memory cell blocks each containing a plurality of memory cells arranged in a column direction are formed such that the plurality of memory cells belonging to each of the memory cell blocks are connected with a sub word line. The above memory cell blocks are arranged in an array. There are installed a plurality of horizontal word lines and a plurality of diagonal word lines. By selecting one of the horizontal word lines, aL set of rectangular-region data of the image data is stored in the respective memory cells of the plurality of memory cell blocks placed in a given column direction. By selecting one of the diagonal word lines, sets of rectangular-region data placed in the same column are read out. Consequently, by selecting one of the horizontal word lines or one of the diagonal word lines, either or both of a set of rectangular-region data and one line of data on an image can be accessed at a high speed using a page mode cycle.

REFERENCES:
patent: 5394373 (1995-02-01), Kawamoto
patent: 5428577 (1995-06-01), Yumitori et al.
patent: 5436911 (1995-07-01), Mori
patent: 5568419 (1996-10-01), Atsumi et al.
patent: 5703828 (1997-12-01), Park et al
patent: 5706243 (1998-01-01), Mori
patent: 5777943 (1998-07-01), Kim et al.

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