U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Reducing timing variance of signals from an electronic device

Patent 6175928 Issued on January 16, 2001. Estimated Expiration Date: Icon_subject December 31, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

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Inventors

Application

No. 002019 filed on 12/31/1997

US Classes:

713/401, Using delay713/500CLOCK, PULSE, OR TIMING SIGNAL GENERATION OR ANALYSIS

Examiners

Primary: Heckler, Thomas M.

Attorney, Agent or Firm

International Class

G06F 001/04

Abstract

A time delay from a triggering event to switching of an output signal in a microelectronic device can be adjusted to compensate for various characteristics of the electronic device. The characteristics include temperature, voltage, and manufacturing process conditions. The time delay is adjusted using a variable delay circuit having multiple delay cells that are selectively coupled to control the time delay. The conditions of the electronic device are detected using a process sensor, which includes an oscillator having a frequency that is sensitive to variations in the conditions.

Other References

  • Patent Application Serial No. 08/994,083, filed on Dec. 19, 1997, entitled "Compensating a Characteristic of a Circuit"
  • Patent Application Serial No. 09/001,608, filed on Dec. 31, 1997, entitled "Comparator"
  • Patent Application Serial No. 09/001,606, filed on Dec. 31, 1997, entitled "A Method and Apparatus for Trimming and Integrated Circuit"
  • T. Shirotori et al., PPL-based Impedance Controlled Output Buffer, 1991 Symp. On VLSI Circuits, pp. 49-5
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