Wireless transmitting-receiving apparatus for a bicycle

• US 5,170,161 A
• Filed: 02/08/1990
• Issued: 12/08/1992
• Est. Priority Date: 06/10/1989
• Status: Expired due to Term

• Current Assignee: Cat Eye Co Limited (Cat Eye)
• Original Assignee: Cat Eye Co Limited (Cat Eye)
• Inventors: Sakurai, Nobuo
• Primary Examiner(s): Yusko, Donald J.
• Assistant Examiner(s): Horabik, Michael
• Application Number:
  US07/476,781
• Time in Patent Office: 1,034 Days
• Field of Search: 340/870.3, 340/870.19, 340/870.2, 340/825.6, 340/825.61, 340/825.62, 340/870.24, 340/870.28, 340/432, 340/670, 341/178, 341/184, 341/185, 341/189, 375/21, 375/23, 375/40, 375/117, 377/24.1, 377/24.2, 329/313, 329/336, 307/273, 307/602, 328/191, 328/193, 328/207
• US Class Current: 340/870.3
• CPC Class Codes: B62J 45/20 Cycle computers as cycle accessories
• CPC Class Codes: B62J 50/22 electronic, e.g. displays
• CPC Class Codes: G01P 3/487 delivered by rotating magnets
• CPC Class Codes: G08C 17/00 Arrangements for transmitting signals characterised by the use of a wireless electrical link
• CPC Class Codes: G08C 19/16 in which transmission is by pulses

Abstract

A wireless transmitting-receiving apparatus for detecting and displaying the speed of travel of a bicycle which is mounted on a wheel, including a sensor generating one signal per every rotation of the wheel, a signal receiving apparatus for successively receiving signals generated from the sensor, a pulse signal generator generating at least two pulse signals with a prescribed pulse interval for every generated signal, a wireless transmitter for transmitting continuously the generated pulse signals, a receiver for successively receiving the transmitted pulse signals, a converter for converting the received pulse signals into signals corresponding to the inputted signals based on the prescribed pulse interval, a microcomputer for calculating the speed of travel of the bicycle, distance traveled, and other similar functions of the bicycle, and a displaying portion for displaying the calculated speed of travel and other data.

Claims

1. A wireless transmitting-receiving apparatus comprising:

signal generating means for successively generating a plurality of signals;

first signal converting means for converting each of said generated signals into at least two continuous signals;

wireless transmitting means for transmitting said converted signals in a wireless manner;

signal receiving means for successively receiving said transmitted signals; and

second signal converting means for converting said received signals into signals corresponding to the signals generated by said signal generating means in accordance with the manner of conversion of said first signal converting means, said second signal converting means including two one shot multivibrators.

2. A transmitting-receiving apparatus according to claim 1, wherein

said first signal converting means generates two pulse signals having a predetermined pulse interval for every one of said generated signals.

3. A wireless transmitting-receiving apparatus, comprising:

first signal generating means for successively generating a plurality of signals;

second signal generating means for generating at least two pulse signals having a predetermined pulse interval for each of the signals generated by said first signal generating means;

wireless trasmitting means for continuously transmitting said generated pulse signals in a wireless manner;

receiving means for successively receiving said transmitted pulse signals; and

converting means for converting said received pulse signals into signals corresponding to the signals generated by said first signal generating means in accordance with said predetermined pulse signals, said converting means including two one shot multivibrators.

4. A transmitting-receiving apparatus according to claim 3, wherein

said converting means further comprises an AND gate and a flipflop circuit.

5. A transmitting-receiving apparatus according to claim 4, wherein

said AND gate has an input and an output,

said converting means comprises first and second one shot multivibrators, each of said one shot multivibrators having an input and a output, said output of said first one shot multivibrator being interconnected to said input of said second one shot multivibrator, said input of said first one shot multivibrator and said output of said second one shot multivibrator being interconnected to said AND gate, and

said output from said first one shot multivibrator and said output from said AND gate are inputted to said flipflop circuit.

6. A wireless transmitting-receiving apparatus for detecting and displaying the speed of travel of a wheeled vehicle, comprising:

first signal generating means attached to a wheel for generating one signal per every rotation of said wheel;

first signal receiving means for successively receiving said generated signals;

second signal generating means, interconnected to said first signal receiving means, for generating at least two pulse signals with a predetermined pulse interval for every signal received by said first signal receiving means;

wireless transmitting means for continuously transmitting said generated pulse signals in a wireless manner;

second signal receiving means for successively receiving said transmitted pulse signal;

converting means for converting said received pulse signals into signals corresponding to the signals received by said first signal receiving means, in accordance with said predetermined pulse interval, said converting means including two one shot multivibrators;

calculating means for calculating the speed of travel of the wheeled vehicle by counting said converted signals; and

displaying means for displaying said calculated speed of travel.

7. A transmitting-receiving apparatus according to claim 6, wherein

said first signal generating means comprises a magnet attached on a spoke of the two-wheeled vehicle and a reed switch and a resistance attached on a fork of the vehicle, said read switch turned ON every time said magnet passes in front of said read switch to generate one signal.

8. A transmitting-receiving apparatus according to claim 7, wherein

said wheeled vehicle is a bicycle having a frame with a fork and said first signal generating means is attached to a spoke of the front wheel and said fork.

9. A transmitting-receiving apparatus comprising:

first signal generating means for successively generating a plurality of signals;

second signal generating means for generating at least two pulse signals having a predetermined pulse interval for each of the signals generated by said first signal generating means, said second signal generating means including two one shot multivibrators;

wireless transmitting means for continuously transmitting said generated pulse signals in a wireless manner;

receiving means for successively receiving said transmitted pulse signals; and

converting means for converting said received pulse signals into signals corresponding to the signals generated by said first signal generating means in accordance with said predetermined pulse signals, said converting means including two one shot multivibrators and an AND gate.

10. A transmitting-receiving apparatus according to claim 9 wherein said converting means comprises first and second one shot multivibrators, each of said one shot multivibrators having an input and an output, said output of said first one shot multivibrator being interconnected to said input of said second one shot multivibrator and said output of said second one shot multivibrator being interconnected to said AND gate.