Title:
車載用電子機器
Document Type and Number:
Japanese Patent JP4094918
Kind Code:
B2
Abstract:
The oscillation frequency of a crystal oscillator is selected such that a frequency difference between the frequency of a broadcast wave (2) received by an antenna (3) and the oscillation frequency or a higher harmonic of the oscillation frequency is 15 kHz or 400 Hz or lower to suppress interference in receiving the broadcast wave. The crystal oscillator is provided for determining an operating frequency for a microcomputer.
Inventors:
Hiroaki Nakatani
Takahiro Iwakiri
Takahiro Iwakiri
Application Number:
JP2002277358A
Publication Date:
June 04, 2008
Filing Date:
September 24, 2002
Export Citation:
Assignee:
ALPS ELECTRIC CO.,LTD.
International Classes:
H04B1/10; H04B15/04; H04B15/06
Domestic Patent References:
| JP865185A | ||||
| JP62279718A | ||||
| JP61251332A | ||||
| JP4129431A | ||||
| JP2001024531A | ||||
| JP4207633A | ||||
| JP9023198A |
Attorney, Agent or Firm:
Kenjiro Take
Ichiro Suzuki
Hirohiro Ichimura
Kazuo Kobayashi
Ichiro Suzuki
Hirohiro Ichimura
Kazuo Kobayashi