Coded data generation or conversion – Digital code to digital code converters – Data rate conversion
Reexamination Certificate
2008-07-01
2008-07-01
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
Data rate conversion
C341S050000
Reexamination Certificate
active
07394410
ABSTRACT:
An enhancement that reduces the digital interface rate of analog-to-digital (A/D) and digital-to-analog (D/A) converters through the use of compression and decompression is described. Improved A/D converters compressing a sampled version of an A/D converter's analog input signal in real time, thereby significantly decreasing the required bit rate of the A/D converter's digital interface. Similarly, improved D/A converters decrease the required bit rate of the D/A converter's digital interface. D/A converters include a decompressor that decompresses the D/A converter's compressed digital input in real time, prior to conversion to an analog output signal.
REFERENCES:
patent: 3394352 (1968-07-01), Wernikoff et al.
patent: 4546342 (1985-10-01), Weaver et al.
patent: 4558302 (1985-12-01), Welch
patent: 4833445 (1989-05-01), Buchele
patent: 5057932 (1991-10-01), Lang
patent: 5142656 (1992-08-01), Fielder et al.
patent: 5260693 (1993-11-01), Horsley
patent: 5274445 (1993-12-01), Overton et al.
patent: 5329243 (1994-07-01), Tay
patent: 5397981 (1995-03-01), Wiggers
patent: 5428357 (1995-06-01), Haab et al.
patent: 5442351 (1995-08-01), Horspool et al.
patent: 5566088 (1996-10-01), Herscher et al.
patent: 5610608 (1997-03-01), Yamada et al.
patent: 5687189 (1997-11-01), Smith et al.
patent: 5839100 (1998-11-01), Wegener
patent: 5889562 (1999-03-01), Pau
patent: 6278435 (2001-08-01), Etheridge et al.
patent: 6449596 (2002-09-01), Ejima
patent: 6505247 (2003-01-01), Steger et al.
patent: 6603410 (2003-08-01), Gerharter et al.
patent: 6754295 (2004-06-01), Hartnett
patent: 6892150 (2005-05-01), Pickerd et al.
patent: 7088276 (2006-08-01), Wegener
patent: 7292164 (2007-11-01), Wegener
patent: 2003/0188005 (2003-10-01), Yoneda et al.
patent: 0797353 (1997-09-01), None
patent: 0797353 (1997-09-01), None
Tektronix, Inc. “XYZs of Oscilloscopes” Copyright 2001 consisting of 62 pages.
Türkboylari et al. “An Efficient Algorithm for Estimating the Signal-to-Interference Ratio in TDMA Cellular Systems” IEEE Transactions on Communications, vol. 46, No. 6, Jun. 1998, pp. 728-731.
Velazquez et al. “Design of Hybrid Filter Banks for Analog/Digital Conversion” IEEE Transactions on Signal Processing, vol. 46, No. 4 Apr. 1998 pp. 956-967.
Venbrux et al. “A VLSI Chip Set for High-Speed Lossless Data Compression” IEEE Transactions on Circuits and Systems for Video Technology, vol. 2, No. 4, Dec. 1992, pp. 381-391.
Weller “Relating Wideband DSO Rise Time to Bandwidth: Lose the 0.35!” edn.com Dec. 12, 2002 pp. 89-94.
Wu et al. “Lossless Compression of Hydroacoustic Image Data” IEEE Journal of Oceanic Engineering, vol. 22, No. 1, Jan. 1997 pp. 93-101.
Yoo et al. “A Power and Resolution Adaptive Flash Analog-to-Digital Converter” ISLPED '02 Aug. 12-14, 2002 Monterey, California Copyright 2002 pp. 233-236.
Agilent Technologies “Frequency and Time-Selective Power Measurements with the Agilent 89410A and 89440A” Copyright 1993, 2000, 2001 pp. 1-8.
NoiseCom.com “Noise Basics” 1998, pp. 33-35.
Arramreddy “An FPGA Approach for SNR Estimation Using Phase-Only Data” University of Arkansas Aug. 1999 pp. 1-11.
Lampinen et al. “A New Dual-Mode Data Compressing A/D Converter” IEEE International Symposium on Circuits and Systems, Jun. 9-12, 1997 pp. 429-432.
LeCroy “Measuring Noise Time, Frequency, and Statistical Domain Analysis” LeCroy Applications Brief No. L.A.B. 426, Nov. 1999, consisting of 2 pages.
LeCroy “How Fast Must I Sample? How Sampling Rate Affects Time Measurement Uncertainty” LeCroy Application Brief No. LAB 429, Aug. 2000, consisting of 2 pages.
LeCroy “Using Histograms I Use Statistical Analysis to Characterize Random Events” LeCroy Application Brief No. L.A.B. 718, Aug. 1996, consisting of 2 pages.
LeCroy “Using Histograms II Statistical Analysis Helps Determine Product Specifications” LeCroy Application Brief No. L.A.B. 719, Sep. 1996, consisting of 2 pages.
LeCroy “Using Histograms III Statistical Analysis As A Diagnostic Tool” LeCroy Application Brief No. L.A.B. 720, Sep. 1996, consisting of 2 pages.
LeCroy “Using Histograms IV Viewing Waveforms Related to Specific Histogram Data” LeCroy Application Brief No. L.A.B. 721, Sep. 1996, consisting of 2 pages.
Matzner et al. “An SNR Estimation Algorithm Using Fourth-Order Moments” IEEE 1994 p. 119.
“MPEG” www.ats.ucla.edu/at/software/scivis/mpeg/mpeg.htm 1996/1997, consisting of 4 pages.
Natarajan “Filtering Random Noise Via Data Compression” IEEE 1993 pp. 60-69.
Natarajan “Filtering Random Noise from Deterministic Signals via Data Compression” IEEE Transactions on Signal Processing, vol. 43, No. 11, Nov. 1995, pp. 2595-2605.
Data Translation, Inc. “In Choosing a Data Acquisition Board, Overall Accuracy=ENOB” 2000, pp. 1-6.
Bal et al. “Two-Pass Quantile Based Noise Spectrum Estimation” Center for Spoken Language Understanding OGI School of Science and Engineering at OHSU, 2003, 4 pgs.
Benz et al. “A Comparison of Several Algorithms for SAR Raw Data Compression” IEEE Transactions on Geoscience and Remote Sensing vol. 33, No. 5 Sep. 1995 pp. 1266-1276.
Engelson et al. “Lossless Compression of High-Volume Numerical Data from Simulations” IDA, Linköping University Jan. 13, 2000 pp. 1-13.
Agilent Technologies “10 Steps to Selecting the Right Oscilloscope” Copyright 1998, 2000 consisting of 5 pages.
Ives et al. “Lossless Compression of Waveform Data Using Multiple-Pass Adaptive Filtering” IEEE 2000 pp. 2648-2650.
Stearns et al. “Lossless Compression of Waveform Data for Efficient Storage and Transmission” IEEE Transactions on Geoscience and Remote Sensing, vol. 31, No. 3 May 1993 pp. 645-654.
Tektronix “Bandwidth and the Influence of Digital Signal Processing”, Dec. 2002, consisting of 13 pages.
Tektronix “Effects of Bandwidth on Transient Information” Copyright 1998 consisting of 4 pages.
Rodriguez et al. “Adaptive Method for SNR Estimation in Speech Signal” Electronics Letter, vol. 32, No. 5 Feb. 29, 1996 pp. 421-422.
Shin et al. “Simple SNR Estimation Methods for QPSK Modulated Short Bursts” IEEE 2001 pp. 3644-3647.
Pauluzzi et al. “A Comparison of SNR Estimation Techniques for the AWGN Channel” IEEE Transactions on Communications, vol. 48, No. 10, Oct. 2000 pp. 1681-1691.
Pinho “An Online Preprocessing Technique for Improving the Lossless Compression of Images With Sparse Histograms” IEEE Signal Processing Letters, vol. 9, No. 1 Jan. 2002 pp. 5-7.
Pinho “Preprocessing Techniques for Improving the Lossless Compression of Images with Quasi-Sparse and Locally Sparse Histograms” IEEE 2002 pp. 633-636.
Ruscak et al. “Using Histogram Techniques to Measure A/D Converter Noise” Analog Dialogue, vol. 29, No. 2, 1995, consisting of 4 pages.
Evans et al. “Efficient Real-Time Noise Estimation Without Explicit Speech, Non-Speech Detection: An Assessment on the Aurora Corpus” IEEE 2002 pp. 985-988.
Fang “VLSI Processor Design of Real-time Data Compression for High-Resolution Imaging Radar” IEEE Apr. 1994 pp. 441-444.
Gawedzki “Analysis of Measurement Signals Compression Algorithm Properties in the Time Domain” IEEE Instrumentation and Measurement Technology Conference May 21-23, 2001 pp. 725-728.
Gritzali et al. “Noise Estimation in ECG Signals” IEEE Engineering In Medicine & Biology Science 10th Annual International Conference 1988 consisting of 2 pages.
He et al. “Effective SNR Estimation in OFDM System Simulation” IEEE 1998 pp. 945-950.
Hong et al. “SNR Estimation in Frequency Domain Using Circular Correlation” Electronics Letters vol. 38, No. 25, Dec. 5, 2002 pp. 1693-1694.
Kli
Haynes Beffel & Wolfeld LLP
Jean-Pierre Peguy
Koenig Carolyn
Samplify Systems, Inc.
LandOfFree
Enhanced data converters using compression and decompression does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Enhanced data converters using compression and decompression, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced data converters using compression and decompression will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2800321