Determining equivalent waveforms for distorted waveforms

Details Determining equivalent waveforms for distorted waveforms Determining equivalent waveforms for distorted waveforms

2007-09-18

2007-09-18

Do, Thuan (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000, C716S030000

Reexamination Certificate

active

11071121

ABSTRACT:
An equivalent waveform for a distorted waveform used in timing and signal integrity analysis in the design of an integrated circuit is automatically generated. The equivalent waveform is produced by calculating the transition quantity of a first non-distorted waveform. The transition quantity is the amount of transition of the first non-distorted waveform that is required for the cell to produce an output waveform with a predetermined end voltage. The end point of the transition period for the distorted waveform is then determined based on when the distorted waveform has accumulated the same transition quantity. The equivalent waveform can then be formed by computing a second non-distorted waveform such that the end point of the transition period for the second non-distorted waveform coincides with the end point of the transition period for the distorted waveform.

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