Interface for LED matrix display with buffers with random access input and direct memory access output
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
Jul 6, 1994
filing date -
Nov 13, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The apparatus is an interface to convert an input analog video signal (real-time) into an output to drive a matrix of light-emitting-diodes. Alternately, a digital video signal can be received, bypassing the analog-to-digital converters. The apparatus is readily configurable to various sizes of matrix sizes and uses a logic board to arrange the data so that low speed components may be used. Two frame buffers alternately receive data in random access order in accordance with the physical and data format of the LED display, and output data by direct memory access methods.
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