Power supply for sequentially energizing segments of an electroluminescent panel to produce animated displays
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United States of America Patent
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Oct 25, 1994
Grant Date -
N/A
app pub date -
Apr 22, 1992
filing date -
Apr 22, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A power supply for sequentially energizing segments of an EL display device to produce an animated graphic using an EPROM to store the excitation information for the respective segments to be illuminated. The EPROM may be replaced by another EPROM programmed with a different sequence for the same or a different EL graphic display device. An alternating voltage wave generator has an adjustable frequency and variable pulse width output to match the characteristics of the EL device being driven to obtain the best illumination and device life for the given EL device. An optional microphone senses background music or other audio signals to synchronize the movement of the animated graphic to the beat or rhythm of the sensed audio.
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