Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion
Patent
1993-09-28
1995-10-31
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
Analog to digital conversion
341 94, H03M 114
Patent
active
054633958
ABSTRACT:
A semi-flash type analog/digital converter for eliminating errors in its output signals which are caused by noise. The analog/digital converter includes a D/A converter for outputting a plurality of analog signals which are produced based on a plurality of input signals. A plurality of comparators compare the voltage of an analog input signal, provided via a sample and hold circuit, with the analog signals output from the D/A converter. The output from the comparators are supplied to two latches, which further provide the outputs to a plurality of encoders. One of the encoders encodes the signals provided by one of the latches and outputs signals representative of high order bits of a digital signal. A second encoder, which encodes output signals provided by the other latch, is a correction encoder. The correction encoder corrects the signals provided by the latch if it determines that any of the signals are in error, and outputs signals representing the lower order bits of a digital output signal. The correction encoder includes either a priority control circuit or an adder circuit which performs the correction.
REFERENCES:
patent: 4211999 (1980-07-01), Clark et al.
patent: 4291299 (1981-09-01), Hinz et al.
patent: 4887084 (1989-12-01), Yamaguchi
patent: 4897657 (1990-01-01), Brubaker
patent: 5029305 (1991-07-01), Richardson
patent: 5315301 (1994-05-01), Hosotani et al.
patent: 5327135 (1994-07-01), Hosotani et al.
Millman, Microelectronics: Digital and Analog Circuits and Systems, 1979 pp. 189-193, 612 and 613.
"Subranging ADCs operate at high speed with high resolution" by Ray K. Ushani, Datel Inc., vol. 36, No. 8, Nov. 4, 1991, pp. 139-152, Aug. 23, 1991.
"Current Technology and Future Perspective for High-Speed A/D Converters", pp. 21-28, by Akira Matsuzawa, Semiconductor Research Center, Matsushita Industrial Co., Ltd.
NEC Corporation
Williams Howard L.
LandOfFree
Semi-flash type A/D converter employing a correction encoder for does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Semi-flash type A/D converter employing a correction encoder for, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Semi-flash type A/D converter employing a correction encoder for will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1776552