System for detecting and diagnosing noise caused by simultaneous current switching
First Claim
1. In a computerized simulation model for analyzing composite logic circuits having devices for switching significant amounts of current, a system for detecting and diagnosing noise caused by current switching comprising:
- (a) logic simulation means for simulating logic experiments and for retaining and communicating results thereof;
(b) noise contributor information file generating means for providing identification data corresponding to each current switching device that contributes noise and for enabling post analysis of the results said simulation;
(c) a noise activity file generator connected to said logic simulation means for employing said simulation results to create an activity file of events that represents the operation of those current switching devices identified by said noise contributor information file generating means; and
(d) a noise calculator-analyzer connected to said noise activity file generator for determining the amount of noise created by each noise contributing current switching device and for measuring the total instantaneous noise at each event in said activity file.
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Abstract
A system for detecting and diagnosing noise caused by current switching in a computerized simulation model for analyzing composite logic circuits. The system includes a logic simulator for simulating logic experiments, a noise contributor information file generator for providing identification data corresponding to each current switching device that contributes noise and for performing post analysis of the results of a simulation, a noise activity file generator for creating an activity file of events derived from the simulation results, that represent the operation of current switching devices identified by the noise contributor information file generator and a noise calculator-analyzer for determining the amount of noise created by each noise contributing current switching device and for measuring the total instantaneous noise at each event in the activity file.
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Citations
37 Claims
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1. In a computerized simulation model for analyzing composite logic circuits having devices for switching significant amounts of current, a system for detecting and diagnosing noise caused by current switching comprising:
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(a) logic simulation means for simulating logic experiments and for retaining and communicating results thereof; (b) noise contributor information file generating means for providing identification data corresponding to each current switching device that contributes noise and for enabling post analysis of the results said simulation; (c) a noise activity file generator connected to said logic simulation means for employing said simulation results to create an activity file of events that represents the operation of those current switching devices identified by said noise contributor information file generating means; and (d) a noise calculator-analyzer connected to said noise activity file generator for determining the amount of noise created by each noise contributing current switching device and for measuring the total instantaneous noise at each event in said activity file. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A simulation system for detecting and diagnosing noise generated by at least one device in a logic circuit comprising:
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(a) logic simulation means for simulating a logic experiment and for retaining and communicating results thereof; (b) information file generating means for providing identification data corresponding to each noise contributing device in said logic experiment; (c) activity file generating means connected to said logic simulation means for employing said simulation results to create an activity file of events that represents the operation of those devices identified by said information file generating means; and (d) analyzing means connected to said activity file generating means for determining the amount of noise created by each noise contributor and for measuring the total instantaneous noise by bounding each of said noise contributors. - View Dependent Claims (30, 31)
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32. A simulation method for detecting and diagnosing noise generated by at least one device in a logic circuit, the steps comprising:
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(a) simulating a logic experiment; (b) identifying data corresponding to each device that contributes noise; (c) performing post analysis of the results of said simulation as enabled by said identifying data; (d) creating an activity file of events representing the operation of each of said identified noise contributing devices; and (e) determining the total amount of instantaneous noise created by the noise contributing devices. - View Dependent Claims (33, 34, 35, 36)
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37. A simulation based analysis model for detecting and diagnosing noise generated by at least one device in a logic circuit comprising:
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logic simulation means for simulating a logic experiment; (b) information file generating means for providing identification data corresponding to each noise contributing device in said logic experiment; (c) activity file generating means connected to said logic simulation means for creating an activity file of events that represent the operation of devices identified by said information file generating means; and (d) analyzing means connected to said activity file generating means for determining the amount of noise created by each noise contributor and for measuring the total instantaneous noise by a single summation at each event in said activity file.
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Specification