Title:
TRAVEL STATE DETECTING DEVICE
Document Type and Number:
Japanese Patent JP3319050
Kind Code:
B2
Abstract:
PURPOSE: To prevent radio interference in a travel state detecting device which uses a radio communication by a radio system cycle computer, etc.
CONSTITUTION: The measurement and transmission part of the cycle computer which uses the travel state detecting device is provided with plural transmission parts which can send signals of different frequencies and a switching circuit which switches those transmission parts. The display arithmetic part 3 of the cycle computer is provided with reception parts 3a and 3b corresponding to the frequencies of the transmission parts and a switching circuit 3c which switches those reception parts 3a and 3b. The signal sent and received between the display arithmetic part 3 and measurement and transmission part consists of a specific number of pulses. And, when the number of pulses of a signal that the arithmetic display part 3 receives is larger than a specific value, a CPU 3e detects radio interference. When the radio interference is detected, the switching circuit 3c switches the transmission and reception parts 3a and 3b to change the frequencies.
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Inventors:
Toshiaki Sakashita
Application Number:
JP18562593A
Publication Date:
August 26, 2002
Filing Date:
June 29, 1993
Export Citation:
Assignee:
CASIO COMPUTER CO.,LTD.
International Classes:
G08C17/00; B62J99/00; G01C22/00; G01P3/489; G08C17/02; G08C17/04; G08C19/24; G08C25/00; (IPC1-7): G08C19/24; B62J39/00; G08C17/02; G08C25/00
Domestic Patent References:
| JP289361U | ||||
| JP5318319B1 |
Attorney, Agent or Firm:
Hiroshi Arafune (1 person outside)