Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2007-08-21
2007-08-21
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S144000
Reexamination Certificate
active
11272252
ABSTRACT:
A digital to analog converter system is disclosed for receiving an input signal and a sign bit signal that is indicative of the sign of the input signal. The digital to analog converter system includes first and second pairs of resistor strings, and first and second switching networks. A first one of the first pair of resistor strings is adapted for coupling between a first voltage potential and an intermediate node. The first switching network is adapted to couple a voltage produced across a selected one of resistors in the first string across the second one of the resistor strings. The resistors in the second resistor string producing voltages in response to current passing from the first resistor string to the second resistor string through the first switching network. A third one of the second pair of resistor strings is adapted for coupling between a second voltage potential and the intermediate node. The second switching network is adapted to couple a voltage produced across a selected one of resistors in the third string across the fourth one of the resistor strings. The resistors in the fourth resistor string produce voltages in response to current passing from the third resistor string to the fourth resistor string through the second switching network.
REFERENCES:
patent: 3997892 (1976-12-01), Susset
patent: 4338591 (1982-07-01), Tuthill
patent: 5014054 (1991-05-01), Oshita et al.
patent: 5495245 (1996-02-01), Ashe
patent: 5568147 (1996-10-01), Matsuda et al.
patent: 5627537 (1997-05-01), Quinlan et al.
patent: 5648780 (1997-07-01), Neidorff
patent: 5696657 (1997-12-01), Nourrcier, Jr. et al.
patent: 5831566 (1998-11-01), Ginetti
patent: 6567026 (2003-05-01), Gorman
patent: 6621440 (2003-09-01), Gorman
patent: 6724336 (2004-04-01), Leung et al.
patent: 6778122 (2004-08-01), Lien
patent: 6937178 (2005-08-01), Rempfer et al.
patent: 2002/0145552 (2002-10-01), Gorman
patent: 1098443 (2000-11-01), None
patent: 1184989 (2001-08-01), None
Gryzbowski et al., “Non-linear Functions from D/A Converters,” Electronic Engineering 1971, pp. 48-51, no month.
Ferguson, Jr. Paul
Haurie Xavier
Analog Devices Inc.
Gauthier & Connors LLP
Jean-Pierre Peguy
LandOfFree
Balanced dual resistor string digital to analog converter... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Balanced dual resistor string digital to analog converter..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Balanced dual resistor string digital to analog converter... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3897356