Method and apparatus for calculating a pseudo crank rotational s

Details Method and apparatus for calculating a pseudo crank rotational s Method and apparatus for calculating a pseudo crank rotational s

1997-08-27

2000-08-15

Nguyen, Tan

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Indication or control of braking, acceleration, or deceleration

701 55, 474 70, F16H 6300

Patent

active

061049751

ABSTRACT:
A pseudo crank rotational speed determining unit for a bicycle includes a speed determining unit which determines a speed of the bicycle and a pseudo crank rotational speed determining unit. The pseudo crank rotational speed determining unit operatively communicates with the speed determining unit and determines a pseudo crank rotational speed from the determined speed of the bicycle. In a more specific embodiment, a front gear identifying unit identifies a front gear of the bicycle, and a rear gear identifying unit identifies a rear gear of the bicycle. The pseudo crank rotational speed determining unit determines a gear ratio from the identified front gear and the identified rear gear, and then the pseudo crank rotational speed is determined from the determined speed of the bicycle and from the determined gear ratio.

REFERENCES:
patent: 3898563 (1975-08-01), Erisman
patent: 4443008 (1984-04-01), Shimano
patent: 4633213 (1986-12-01), Tsuyama
patent: 4854191 (1989-08-01), Nagano
patent: 5213548 (1993-05-01), Colbert et al.
patent: 5254044 (1993-10-01), Anderson
patent: 5261858 (1993-11-01), Browning
patent: 5356348 (1994-10-01), Bellio et al.
patent: 5644511 (1997-07-01), McWhorter

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