Patent ID: 8190956
Filing Date: 2012-05-29
Classification: H02P

Abstract:
1. A system for detecting errors in a quadrature signal, comprising: a first circuitry operable to be triggered by edges of a first quadrature signal to detect inactivity of a second quadrature signal during consecutive edges of the first quadrature signal; a second circuitry coupled to the first circuitry, the second circuitry operable to count the number of consecutive edges of the first quadrature signal during inactivity of the second quadrature signal; and a third circuitry coupled to the first circuitry and the second circuitry, the third circuitry operable to correct errors in the second quadrature signal by combining transitions of the first quadrature signal with the second quadrature signal during a period of time determined by the count value of the second circuitry.