Static information storage and retrieval – Addressing – Particular decoder or driver circuit
Patent
1998-07-22
1999-06-22
Nguyen, Viet Q.
Static information storage and retrieval
Addressing
Particular decoder or driver circuit
36523001, G11C 1134
Patent
active
059149108
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, a 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: 4733372 (1988-03-01), Nanbu et al.
patent: 5241500 (1993-08-01), Barth, Jr. et al.
Matsushita Electric - Industrial Co., Ltd.
Nguyen Viet Q.
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