Data transfer control of a video memory having a multi-divisiona

Details Data transfer control of a video memory having a multi-divisiona Data transfer control of a video memory having a multi-divisiona

1994-06-22

1996-12-03

Elmore, Reba I.

395436, 395479, G06F 1300

Patent

active

055817335

ABSTRACT:
An image memory has a random access memory array capable of being randomly accessed; a serial access memory array partitioned into 2.sup.n (n>1) divisional areas cyclically and serially accessed asynchronously with the random access memory array; a data transfer unit to transfer data between the random access memory array and the serial access memory array; a determining unit to determine a row of data to be transferred from the random access memory array to each of the divisional areas; and a designating unit for designate at least one of a top serial access address and a last serial access address, respectively, of each divisional area. The data transfer unit executes data transfer from the random access memory array to the serial access memory array in accordance with outputs from the determining unit and the designating unit.

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