Apparatus and methods for controlling a signal device
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United States of America Patent
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Oct 11, 1994
Issued Date -
N/A
app pub date -
Dec 14, 1990
filing date -
Sep 20, 1988
priority date (Note) -
Expired
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Abstract
Apparatus and method for controlling a signal device for energization by an electrical source. The apparatus includes circuitry for producing digital cycles on an output line wherein each digital cycle includes a sequence of pulses and spaces, each cycle having at least two pulses that differ in duration and at least two spaces that differ in duration. The apparatus also includes circuitry connected to the output line and responsive to the circuitry for producing the digital cycles for applying electrical energization from the electrical source to the signal device in accordance with the pulses in the digital cycles.
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