Indicator control circuit

Details Indicator control circuit Indicator control circuit

1992-09-08

1994-01-11

Yusko, Donald J.

Communications: electrical

Continuously variable indicating

Using a particular modulation

34087005, 36472417, G03C 1916

Patent

active

052785521

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.

REFERENCES:
patent: 3735387 (1973-05-01), Miller
patent: 3939413 (1976-02-01), Milkovic
patent: 4509044 (1985-04-01), Yachida
patent: 4521867 (1985-06-01), Kasuga
patent: 4796217 (1989-01-01), Takahashi
patent: 5014232 (1991-05-01), Andre
Papoulis, Athanasios, ISBN 0-03-056097-7, S. 219, 1980.
Azizi, Seyed Ali, ISBN 3-486-24561-9, S. 184, 185, 200, 201, 1981.

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