Patent ID: 7089149
Filing Date: 2006-08-08
Classification: F02D,G01D

Abstract:
1. An apparatus for detecting an angle of a rotating shaft as a train of bits, wherein a first signal including a train of pulses corresponding to angle intervals of a rotation of the rotating shaft is inputted to the apparatus, and a second signal including a train of clock pulses whose clock cycle is a positive integer submultiple of a pulse cycle of the first signal is inputted to the apparatus, the apparatus comprising: a first counter indicative of a higher-order of the train of bits, the first counter counting up or down in synchronization with the pulse cycle of the first signal; and a second counter indicative of a lower-order of the train of bits, the second counter counting up or down in synchronization with the clock cycle of the second signal and being cleared in synchronization with the pulse cycle of the first signal.