Patent ID: 6028540
Filing Date: 2000-02-22
Classification: H03M

Abstract:
A method for encoding a binary data state, occurring during bit intervals, in a signal having three predetermined levels of high, low, and intermediate, comprising the steps of:alternating between each of the following for each successive occurrence of said binary data state:(a) a first signal at said high level at approximately the beginning of one of said bit intervals, transitioning to said low level at approximately midway in said bit interval, and remaining at said low level for approximately the remainder of said bit interval; and(b) a second signal at said low level at approximately the beginning of another of said bit intervals, transitioning to said high level at approximately midway in said bit interval, and remaining at said high level for approximately the remainder of said bit interval; andencoding the other binary data state in a third signal remaining at approximately said intermediate level for approximately an entire one of said bit intervals.