Patent ID: 6966223

Claim:
A vehicle speed display apparatus for a vehicle having a plurality of wheels and a drive mode switch operable to change operation of said vehicle between a 2WD mode and a 4WD mode, said vehicle speed display apparatus comprising: a front wheel rotational speed sensor for detecting a rotational speed of at least one front wheel of said vehicle, a rear wheel rotational speed sensor for detecting a rotational speed of at least one rear wheel of said vehicle, a vehicle speed calculator for calculating vehicle speed based on a selected output from the front or rear wheel rotational speed sensor; a speed display mechanism for displaying the vehicle speed calculated by the vehicle speed calculator, and a drive mode sensor for detecting whether the vehicle is traveling in the 2WD mode or in the 4WD mode, wherein the vehicle speed calculator comprises a first vehicle speed calculating unit for calculating vehicle speed based on the selected output from one of said front wheel rotational speed sensor and said rear wheel rotational speed sensor, and from a first predetermined condition, and a second vehicle speed calculating unit for calculating vehicle speed based on the selected output from the one of the one of said front wheel wheel rotational speed sensor and said rear wheel rotational speed sensor, and from a second predetermined condition, and wherein the display mechanism displays the vehicle speed calculated by the first vehicle speed calculating unit or the second vehicle speed calculating unit, based on an input from the drive mode sensor, and wherein the first vehicle speed calculating unit and the second vehicle speed calculating unit each correct the calculated vehicle speed based on an input from the drive mode sensor.