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Charles D. Murphy
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Chicago, IL, US
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Patents Grants
last 30 patents
Information
Patent Grant
Complementary transistor comparing circuits for time-to-threshold A...
Patent number
7,196,646
Issue date
Mar 27, 2007
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Comparing circuits for time-to-threshold A/D conversion in digital...
Patent number
7,126,512
Issue date
Oct 24, 2006
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Shared parallel digital-to-analog conversion
Patent number
7,023,370
Issue date
Apr 4, 2006
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Symbol constellations having second-order statistics with cyclostat...
Patent number
6,952,445
Issue date
Oct 4, 2005
Charles D. Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Differential time-to-threshold A/D conversion in digital imaging ar...
Patent number
6,873,282
Issue date
Mar 29, 2005
Charles Douglas Murphy
G04 - HOROLOGY
Information
Patent Grant
Multiple-output counters for analog-to-digital and digital-to-analo...
Patent number
6,707,874
Issue date
Mar 16, 2004
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Analog-to-digital conversion with piece-wise non-linear reference w...
Patent number
6,621,442
Issue date
Sep 16, 2003
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Low-complexity high-speed analog-to-digital converters
Patent number
6,611,222
Issue date
Aug 26, 2003
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Parallel and shared parallel analog-to-digital conversion for digit...
Patent number
6,559,788
Issue date
May 6, 2003
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
Complementary transistor comparing circuits for time-to-threshold A...
Publication number
20060255984
Publication date
Nov 16, 2006
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Comparing circuits for time-to-threshold A/D conversion in digital...
Publication number
20050219094
Publication date
Oct 6, 2005
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Non-linear reference waveform generators for data conversion and ot...
Publication number
20040041599
Publication date
Mar 4, 2004
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Shared multiplication for constant and adaptive digital filters
Publication number
20030195913
Publication date
Oct 16, 2003
Charles Douglas Murphy
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Multiple-output counters for analog-to-digital and digital-to-analo...
Publication number
20030194047
Publication date
Oct 16, 2003
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Low-cost multiplication in small DFT butterflies
Publication number
20030182342
Publication date
Sep 25, 2003
Charles Douglas Murphy
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Shared parallel digital-to-analog conversion
Publication number
20030160716
Publication date
Aug 28, 2003
Charles Douglas Murphy
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Digital images with composite exposure
Publication number
20030151689
Publication date
Aug 14, 2003
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Multiple number representations for multiplication complexity reduc...
Publication number
20030140079
Publication date
Jul 24, 2003
Charles Douglas Murphy
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Shared multiplication in signal processing transforms
Publication number
20030074383
Publication date
Apr 17, 2003
Charles Douglas Murphy
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Non-constant reduced-complexity multiplication in signal processing...
Publication number
20030061252
Publication date
Mar 27, 2003
Charles D. Murphy
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
Symbol constellations having second-order statistics with cyclostat...
Publication number
20030035492
Publication date
Feb 20, 2003
Charles Douglas Murphy
H04 - ELECTRIC COMMUNICATION TECHNIQUE