Indicator control circuit
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United States of America Patent
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Jan 11, 1994
Issued Date -
N/A
app pub date -
Sep 8, 1992
filing date -
Oct 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An indicator control circuit includes a signal conversion circuit for converting an analog signal corresponding to a predetermined physical quantity into first digital data and a digital filter circuit for generating second digital data from the first digital data in accordance with a predetermined filter characteristic. An intermediate digital data is obtained during a process in which the second digital data is generated from the first digital data. The digital filter circuit includes operating circuit for operating the intermediate digital data so that a relationship between the first digital data and the second digital data has a hysteresis. The second digital data generated by the digital filter circuit is used for indicating the predetermined physical quantity on an indicator.
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