Patent ID: 6658068
Filing Date: 2003-12-02
Classification: H03K,H04L

Abstract:
A method for indicating when a mark width or a space width in a digital signal stream is not within an acceptable mark width range or not within an acceptable space width range, the method comprising:receiving a digital signal sequence having at least first and second signal components, including at least one mark and at least one space; providing a replica of the digital sequence, delayed in time by a selected time delay amount; measuring at least one mark width and, when a mark width is not within an acceptable mark width range, associating a mark indicium with the time delayed digital sequence indicating a relationship between the at least one mark width and the acceptable mark width range; and measuring at least one space width and, when a space width is not within an acceptable space width range, associating a space indicium with the time delayed digital sequence indicating a relationship between the at least one space width and the acceptable space width range.