Vehicular electronic apparatus suppressed of interference in...

Details Vehicular electronic apparatus suppressed of interference in... Vehicular electronic apparatus suppressed of interference in...

2006-03-28

2006-03-28

Camby, Richard M. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

C455S296000, C455S255000, C455S152100

Reexamination Certificate

active

07020549

ABSTRACT:
A vehicular electronic apparatus contains a microcomputer, and a crystal oscillator for determining an operating frequency for the microcomputer. An oscillation frequency of the crystal oscillator is selected such that a frequency difference between a frequency of a broadcast wave received by a vehicular receiver and an oscillation frequency of the crystal oscillator or a higher harmonic of the oscillation frequency is 15 kHz or higher or 400 Hz or lower, to suppress an interference in receiving the broadcast wave.

REFERENCES:
patent: 4403350 (1983-09-01), Imai et al.
patent: 4879758 (1989-11-01), DeLuca et al.
patent: 5420592 (1995-05-01), Johnson
patent: 5519889 (1996-05-01), Hipp
patent: 5745523 (1998-04-01), Dent et al.
patent: 0 418 149 (1990-09-01), None

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