Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Reexamination Certificate
2007-07-24
2007-07-24
Nguyen, Khai M. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
C341S155000, C341S166000, C377S042000
Reexamination Certificate
active
11442127
ABSTRACT:
A TAD (time analog/digital) type of A/D converter has plural series-connected delay units each producing a delay in accordance with the level of a converter input voltage, with a first-stage delay unit receiving a pulse signal at commencement of each A/D conversion sampling interval, and a latch/encoder circuit detecting the total number of delay units traversed by the pulse signal by the end of the sampling interval, to obtain a numeric value expressing the input voltage level. To ensure uniformity of the delays of the delay units, these are formed using transistors of larger size than transistors of other circuits such as the latch/encoder circuit.
REFERENCES:
patent: 5396247 (1995-03-01), Watanabe et al.
patent: 5534809 (1996-07-01), Watanabe et al.
patent: 5828717 (1998-10-01), Kusumoto et al.
patent: 5999586 (1999-12-01), Terada et al.
patent: 6771202 (2004-08-01), Watanabe et al.
patent: 6879278 (2005-04-01), Watanabe et al.
patent: H05-259907 (1993-10-01), None
patent: 2004-007385 (2004-01-01), None
patent: 2004-357030 (2004-12-01), None
DENSO Corporation
Nguyen Khai M.
Posz Law Group , PLC
LandOfFree
A/D converter that is implemented using only digital circuit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A/D converter that is implemented using only digital circuit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A/D converter that is implemented using only digital circuit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3771412