Data processing: measuring – calibrating – or testing – Calibration or correction system – Circuit tuning
Reexamination Certificate
2006-05-09
2006-05-09
Assouad, Patrick J. (Department: 2857)
Data processing: measuring, calibrating, or testing
Calibration or correction system
Circuit tuning
C338S013000, C324S723000, C324S714000, C341S145000, C341S153000
Reexamination Certificate
active
07043386
ABSTRACT:
A high resolution potentiometer implemented using at least two digital potentiometers connected in parallel. Each digital potentiometer is controlled to provide a corresponding resistance value, and a desired resistance value is attained by such control. The resolution is high in some range of desired resistance values and low in other ranges. A high resolution in a desired range can be attained by connecting another resistor in series with the digital potentiometers connected in parallel.
REFERENCES:
patent: 5243535 (1993-09-01), Bolan et al.
patent: 5355083 (1994-10-01), George et al.
patent: 5541510 (1996-07-01), Danielson
patent: 6201491 (2001-03-01), Brunolli et al.
patent: 6225929 (2001-05-01), Beck
patent: 6331768 (2001-12-01), Drori et al.
patent: 6384762 (2002-05-01), Brunolli et al.
patent: 6414616 (2002-07-01), Dempsey
patent: 6555996 (2003-04-01), Drori et al.
patent: 6771053 (2004-08-01), Stanescu et al.
patent: 6809531 (2004-10-01), Slye et al.
patent: 6885328 (2005-04-01), Kao et al.
patent: 2001/0038351 (2001-11-01), Brunolli et al.
patent: 2003/0155902 (2003-08-01), Stanescu et al.
patent: 2004/0108844 (2004-06-01), Stanescu et al.
patent: 2004/0252750 (2004-12-01), Gruszecki et al.
patent: 2005/0024099 (2005-02-01), Ross et al.
patent: 2005/0052305 (2005-03-01), Voicu et al.
patent: 2005/0052306 (2005-03-01), Voicu et al.
Alan Li, “AN-582 Resolution Enhancements of Digital Potentiometers with Multiple Devices”, Rev A Dec. 19, 2001.
Dallas Semiconductor Application Note 140, “Using Multiple DS 1267 Digital Potentiometers with an 8051 Microprocessor Generating 3-Wire Signals”, data unknown.
Analog Devices, “Frequently Asked Questions: Digital Potentiometers”, webpage: www.analog.com, date unknown.
Xicor, Application Note AN124, “A Primer on Digitally-Controlled Potentiometers”, Feb. 2000.
Prabhakaran Joy P
Srinivasmurthy Jayaram B
Assouad Patrick J.
Honeywell International Inc
Thappeta Narendra R
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