WO2002054759A3 - Pixel cell architecture - Google Patents

Pixel cell architecture Download PDF

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Publication number
WO2002054759A3
WO2002054759A3 PCT/CA2001/001762 CA0101762W WO02054759A3 WO 2002054759 A3 WO2002054759 A3 WO 2002054759A3 CA 0101762 W CA0101762 W CA 0101762W WO 02054759 A3 WO02054759 A3 WO 02054759A3
Authority
WO
WIPO (PCT)
Prior art keywords
photodiode
pixel cell
storage element
output
cell architecture
Prior art date
Application number
PCT/CA2001/001762
Other languages
French (fr)
Other versions
WO2002054759A2 (en
Inventor
Jaremi Witewski
Original Assignee
Symagery Microsystems Inc
Jaremi Witewski
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Symagery Microsystems Inc, Jaremi Witewski filed Critical Symagery Microsystems Inc
Priority to AU2002215747A priority Critical patent/AU2002215747A1/en
Publication of WO2002054759A2 publication Critical patent/WO2002054759A2/en
Publication of WO2002054759A3 publication Critical patent/WO2002054759A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/70—SSIS architectures; Circuits associated therewith
    • H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
    • H04N25/77—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
    • H04N25/772—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components comprising A/D, V/T, V/F, I/T or I/F converters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Solid State Image Pick-Up Elements (AREA)

Abstract

A CMOS pixel cell for an image sensor that includes a photodiode and a voltage comparator working as a one-bit analog-to-digital converter is described the potential on the photodiode is compared with a reference voltage and the output is stored in a storage element. It is kept there until a selection transistor is activated to transfer the value to the data bus. The output of this cell is digital. The comparator is effectively a PMOS transistor directly built into the photodiode area where its substrate is tied to the photodiode capacitance. This device is also preferably integrated onto one chip with the storage element and the other peripheral circuit elements.
PCT/CA2001/001762 2000-12-28 2001-12-11 Pixel cell architecture WO2002054759A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002215747A AU2002215747A1 (en) 2000-12-28 2001-12-11 Pixel cell architecture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25832100P 2000-12-28 2000-12-28
US60/258,321 2000-12-28

Publications (2)

Publication Number Publication Date
WO2002054759A2 WO2002054759A2 (en) 2002-07-11
WO2002054759A3 true WO2002054759A3 (en) 2002-12-19

Family

ID=22980057

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2001/001762 WO2002054759A2 (en) 2000-12-28 2001-12-11 Pixel cell architecture

Country Status (2)

Country Link
AU (1) AU2002215747A1 (en)
WO (1) WO2002054759A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100660858B1 (en) 2005-01-28 2006-12-26 삼성전자주식회사 Column ADC of CMOS Image Sensor for preventing sun black effect
GB2460260A (en) * 2008-05-22 2009-11-25 Isis Innovation Image sensor
FR3084553B1 (en) * 2018-07-30 2020-09-04 New Imaging Tech OPTICAL SENSOR
US11196947B2 (en) 2019-09-17 2021-12-07 New Imaging Technologies Optical sensor

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749234A1 (en) * 1995-06-16 1996-12-18 France Telecom Semiconductor image sensor with integrated pixel histogram conversion
EP0912043A2 (en) * 1997-10-27 1999-04-28 Texas Instruments Incorporated Improvements in or relating to image sensing devices
EP0954167A2 (en) * 1998-04-29 1999-11-03 Texas Instruments Incorporated Improvements in or relating to image processing systems
EP1107581A2 (en) * 1999-12-09 2001-06-13 Deutsche Thomson-Brandt Gmbh Image pickup apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0749234A1 (en) * 1995-06-16 1996-12-18 France Telecom Semiconductor image sensor with integrated pixel histogram conversion
EP0912043A2 (en) * 1997-10-27 1999-04-28 Texas Instruments Incorporated Improvements in or relating to image sensing devices
EP0954167A2 (en) * 1998-04-29 1999-11-03 Texas Instruments Incorporated Improvements in or relating to image processing systems
EP1107581A2 (en) * 1999-12-09 2001-06-13 Deutsche Thomson-Brandt Gmbh Image pickup apparatus

Also Published As

Publication number Publication date
WO2002054759A2 (en) 2002-07-11
AU2002215747A1 (en) 2002-07-16

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