Patent ID: 8754684
Filing Date: 2014-06-17
Classification: H03L

Abstract:
1. A method comprising: (a) generating a first pulse signal from a clock signal, wherein the first pulse signal has two and only two edges in a time period of at least four periods of the clock signal, wherein the two edges are edges of a first pulse; (b) generating a second pulse signal from the clock signal, wherein the second pulse signal has two and only two edges in a time period of at least four periods of the clock signal, wherein the two edges are edges of a second pulse, wherein the second pulse is generated later in time with respect to the first pulse; (c) passing the first pulse signal through a delay line to generate a feedback pulse signal; and (d) adjusting a delay of the delay line such that an edge of the feedback pulse signal is time-aligned with a corresponding edge of the second pulse signal, wherein (a) involves detecting a first count state of a counter, and wherein (b) involves detecting a second count state of the counter, wherein the counter is clocked by the clock signal.