Multiple-meter driving apparatus

Details Multiple-meter driving apparatus Multiple-meter driving apparatus

1995-02-21

1995-08-29

Teska, Kevin J.

Boots, shoes, and leggings

36442403, 364550, 324140R, 324143, 34087013, 340438, 340459, G06F 314

Patent

active

054466555

ABSTRACT:
A multiple-meter driving system intends to cut down on the amount of space needed and to reduce the manufacturing cost by providing a single controller including a processing circuit, the controller being adapted collectively to drive a plurality of meters mounted in a vehicle such as motorcar or the like. Pulse signals each having a frequency corresponding to an input signal from a vehicle speed sensor or the like in the vehicle are counted with respect to their period T by a plurality of counters. The counts are then supplied to the controller. DC signals each corresponding to an input from a fuel sensor or the like are converted into digital signals by an A/D converter, which are also supplied to the controller. The processing circuit in the controller time-shares these input signals so as to perform operations of 1/T, sine and cosine. The results are again supplied back to the controller which in turn directs them to pulse width modulating circuits corresponding to the respective meters to be indicated. Since the respective meters are driven on a time-sharing basis, the single controller including the processing circuit can drive the meters collectively.

REFERENCES:
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patent: 4630043 (1986-12-01), Haubner et al.
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patent: 4875042 (1989-10-01), Oku et al.
patent: 4884058 (1989-11-01), Ikeda
patent: 4991098 (1991-02-01), Dantzler
patent: 5017961 (1991-04-01), Hukuda
patent: 5053744 (1991-10-01), Tozawa
Patent Abstracts of Japan, JP-A-63 157 022, Fuji Photo Film Co., Ltd. vol. 012, No. 422 (P-783), 9 Nov. 1988.

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