Oscillator with tunable capacitor

Oscillators – Solid state active element oscillator – Transistors

Reexamination Certificate

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C331S158000, C331S179000, C368S046000, C368S047000, C073S001430

Reexamination Certificate

active

07109810

ABSTRACT:
Circuitry for controlling the oscillation frequency of an oscillator by using a digitally tunable on-chip capacitor bank. The capacitor bank includes a plurality of on-chip capacitors, each of which is independently selectable by a control signal for providing a selectable amount of capacitance to the oscillator to control the oscillator's oscillation frequency.

REFERENCES:
patent: 3930169 (1975-12-01), Kuhn, Jr.
patent: 4582434 (1986-04-01), Plangger
patent: 4851792 (1989-07-01), Ochiai et al.
patent: 4977380 (1990-12-01), Martin et al.
patent: 5323066 (1994-06-01), Feddeler et al.
patent: 5391999 (1995-02-01), Early et al.
patent: 5546055 (1996-08-01), Klughart
patent: 5801411 (1998-09-01), Klughart
patent: 5805029 (1998-09-01), Theus et al.
patent: 5914513 (1999-06-01), Shenai et al.
patent: 5977839 (1999-11-01), Tsumura
patent: 6094105 (2000-07-01), Williamson
patent: 6181184 (2001-01-01), Yamazaki et al.
patent: 6292065 (2001-09-01), Friedman et al.
patent: 6337604 (2002-01-01), Clarke
patent: 6400231 (2002-06-01), Leduc et al.
patent: 6650194 (2003-11-01), Kertis et al.
patent: 6734483 (2004-05-01), Morand et al.
patent: 6804775 (2004-10-01), Park
patent: 2001/0050598 (2001-12-01), Mourant et al.
patent: 1134921 (2001-09-01), None
patent: 62-23228 (1987-01-01), None
patent: 11901106 (1989-07-01), None
Webster's Ninth New Collegiate Dictionary 1991 p. 794.
Horn “Basic Electronics Theory” 4th Edition TAB books 1994 pp. 377-378 and pp. 454-465.
Horn “Basic Electronics Theory” 4thEdition TAB Books 1994 pp. 418-426 and 377 and 378.
Levine “An Algorithm to Synchronize the Time of a computer to Universal Time” IEEE Transactions on Networking vol. 3, No. 1 Feb. 1995, pp. 42-50.
Levine “Time Synchronization over the Internet using ‘AutoLock’” 1998 IEEE International Frequency Control Symposium 1998 pp. 241-249.
Levine “Time Synchronization over the Internet using an Adaptive Frequency-locked Loop” IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control vol. 46, No. 4 Jul. 1999 pp. 888-896.
Fasbender et al. “On Assessing Unidirectional Latencies in Aachet-switched Networks” IEEE 1997 pp. 490-494.
Levine “Time Synchronization using the Internet” IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control vol. 45, No. 2, Mar. 1998 pp. 450-460.
Monington et al. “Time Synchronization Using the Internet” IEEE International Frequency Control Symposium, 1997 pp. 395-403.
Mills Improved Algorithms for Synchronizing Computer Network Clocks IEEE Transactions on Networking vol. 3, No. 3 Jun. 3, 1995 pp. 245-254.
Lombardi “Computer Time Synchronization” Time & Frequency Divison National Institute of Standards and Technology pp. 1-7 1999 http://tf.nist.gov/general/pubs.htm.
“Set your Computer Clock via the Internet” NIST Internet Time Service Apr. 2003 pp. 1-4 http://www.boulder.nist.gov/timefreq/service/its.htm.
“Evaluating the Accuracy of Maxim Real-Time Clocks (RTCs)” Dallas MAXIUM App Notes Aug. 1, 2001 pp. 1-7 http://www.maxium-ic.com/appnotes.cfm/appnote—number/632/In/en.
Lin. “A 6.5GHz Momolithic CMOS Voltage-Controlled Oscillator.” IEEE International Solid State Circuits Conference, Feb. 15-17, 1999, pp. 404-405.
“A.6: The MOS Capacitor” http://ece-www.colorado.edu/˜bart/book/mosexact.pdf, pp. A6.1-A6.8 (accessed on Oct. 18, 2005).

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