Patent ID: 7424649
Filing Date: 2008-09-09
Classification: H04L

Abstract:
1. A latching method comprising the steps of: latching a first signal in response to a first portion of a second signal to generate a first latch signal, said first portion being one of a rising edge and a falling edge of the second signal, said first and second signals being periodic signals; latching said first signal in response to a second portion of said second signal to generate a second latch signal, said second portion being the other of the rising edge and the falling edge of the second signal; and selecting one of said first and second latch signals as a latch signal output, wherein said step of selecting includes: comparing said latch state signal for a first periodic portion of said first signal with said latch state signal for a second periodic portion adjacent to said first periodic portion of said first signal to generate a latch error signal in said associated latch signal in accordance with a result of the comparison.