Patent ID: 7262688
Filing Date: 2007-08-28
Classification: B60C

Abstract:
1. A wheel-state obtaining apparatus comprising (i) a plurality of wheel-side devices which are provided on respective wheels of a vehicle and each of which includes (a) a wheel-state sensor operable to detect a state of a corresponding one of the wheels, and (b) a wheel-side-information transmitting portion operable to transmit, by radio communication, wheel-side information including wheel-state data indicative of the state of said corresponding wheel and identification data identifying said each wheel-side device, and (ii) a body-side device provided on a body of the vehicle and including (c) at least one wheel-side-information receiving device operable to receive the wheel-side information transmitted from each of said plurality of wheel-side devices, and (d) an information processing device operable to process the wheel-side information received by said at least one wheel-side-information receiving device, wherein an improvement comprises: said information processing device including a wheel-position-information obtaining portion operable to obtain wheel-position information indicative of a position of each of the wheels relative to said body, on the basis of the states of said plurality of wheels which are changed according to a predetermined rule.