Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2008-04-01
2008-04-01
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S144000
Reexamination Certificate
active
07352313
ABSTRACT:
Methods and apparatus are provided for improved digital-to-analog conversion. The disclosed digital-to-analog converter comprises a master digital-to-analog converter that generates a master analog value, and a slave digital-to-analog converter that generates a slave analog value that is based on the master analog value. The slave analog value can be, for example, substantially proportional to the master analog value. The master D/A converter can be varied during a coarse tuning mode, while the input to the slave D/A can be fixed, for example, to an approximately mid-range value until the master analog value satisfies one or more predefined conditions. Thereafter, during a fine tuning mode, the slave D/A converter can be varied, while the master D/A converter is fixed, so that the output Y is equal to a desired value (within a specified tolerance).
REFERENCES:
patent: 4998108 (1991-03-01), Ginthner et al.
patent: 5270716 (1993-12-01), Gleim
patent: 5451946 (1995-09-01), Smith et al.
patent: 5489904 (1996-02-01), Hadidi
patent: 6114980 (2000-09-01), Tilley et al.
patent: 6281652 (2001-08-01), Ryan et al.
patent: 6304119 (2001-10-01), Tseng et al.
patent: 6313775 (2001-11-01), Lindfors et al.
patent: 6329941 (2001-12-01), Farooqi
patent: 6515606 (2003-02-01), Lyden
patent: 6549155 (2003-04-01), Heminger et al.
patent: 6556162 (2003-04-01), Brownlow et al.
patent: 6791607 (2004-09-01), Bilhan et al.
patent: 6970121 (2005-11-01), Sun
patent: WO 2005/107078 (2005-05-01), None
Abel Christopher J.
Metz Peter C.
Agere Systems Inc.
Mai Lam T.
LandOfFree
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