Browse Prior Art Database

ON CHIP A/D CONVERTERS FOR SOLID STATE SENSORS

IP.com Disclosure Number: IPCOM000024855D
Original Publication Date: 1982-Jun-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 126K

Publishing Venue

Xerox Disclosure Journal

Abstract

One avenue of signal processing for solid state sensor output is digital signal processing. Without comparing the tradeoffs between digital and analog filtering-processing implementations, it should be clear that an A/i3 converter integral to the solid state sensor array is worthy of consideration.

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:EROX DISCLOSURE JOURNAL

ON CHIP A/D CONVERTERS FOR SOLID STATE SENSORS
James C. Stoffel

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Proposed Classification
U.S. Cl. 358/213 Int. C1. H04n 3/14

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Volume 7 Number 3 May/June 1982

185

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ON CHIP A/D CONVERTERS FOR SOLID STATE SENSORS (Cont'd)

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XEROX 186 DISCLOSURE JOURNAL

Volume 7 Number 3 May/June 1982

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ON CHIP A/D CONVERTERS FOR SOLID STATE SENSORS (Cont'd)

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 XEROX DISCLOSURE JOURNAL Volume 7 Number 3 May/June 1982 187

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ON CHIP A/D CONVERTERS FOR SOLID STATE SENSORS (Cont'd)

One avenue of signal processing for solid state sensor output is digital signal processing. Without comparing the tradeoffs between digital and analog filtering- processing implementations, it should be clear that an A/i3 converter integral to the solid state sensor array is worthy of consideration.

There are three classes of A/D converters which are compatible with long linear array imagers: (1) Single A/D, Serial Data Conversion, (2) Multiple A/D, Serial Data Conversion, and (3) Multiple A/D, Parallel Data Conversion.

Referring to Figure 1, there is shown the architecture predominantly found today for off-chip A/D implementation where the A/D converter 5 is separate from be., off-chip) the sensor array 6.

Figure 2 exploits a multiple output port concept in an analog shift register. There, blocks of the array photosensors 7 are connected through transfer gate blocks 8 to on-board A/D converters 9. The output of converters 9 is in turn coup...