WO2009141590A3 - Image sensor - Google Patents

Image sensor Download PDF

Info

Publication number
WO2009141590A3
WO2009141590A3 PCT/GB2009/001235 GB2009001235W WO2009141590A3 WO 2009141590 A3 WO2009141590 A3 WO 2009141590A3 GB 2009001235 W GB2009001235 W GB 2009001235W WO 2009141590 A3 WO2009141590 A3 WO 2009141590A3
Authority
WO
WIPO (PCT)
Prior art keywords
switch
signal
input
output
switch input
Prior art date
Application number
PCT/GB2009/001235
Other languages
French (fr)
Other versions
WO2009141590A2 (en
Inventor
Steve Collins
Hsiu-Yu Cheng
Original Assignee
Isis Innovation Limited
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 Isis Innovation Limited filed Critical Isis Innovation Limited
Publication of WO2009141590A2 publication Critical patent/WO2009141590A2/en
Publication of WO2009141590A3 publication Critical patent/WO2009141590A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/76—Circuitry for compensating brightness variation in the scene by influencing the image signals
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23G—COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF
    • A23G1/00—Cocoa; Cocoa products, e.g. chocolate; Substitutes therefor
    • A23G1/30—Cocoa products, e.g. chocolate; Substitutes therefor
    • A23G1/50—Cocoa products, e.g. chocolate; Substitutes therefor characterised by shape, structure or physical form, e.g. products with an inedible support
    • A23G1/54—Composite products, e.g. layered laminated, coated, filled
    • 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
    • H04N25/71—Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
    • H04N25/75—Circuitry for providing, modifying or processing image signals from the pixel array
    • 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
    • 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
    • H04N25/778—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components comprising amplifiers shared between a plurality of pixels, i.e. at least one part of the amplifier must be on the sensor array itself
    • 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
    • H04N25/78—Readout circuits for addressed sensors, e.g. output amplifiers or A/D converters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/14—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices
    • H04N3/15—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by means of electrically scanned solid-state devices for picture signal generation
    • H04N3/155—Control of the image-sensor operation, e.g. image processing within the image-sensor
    • H04N3/1556—Control of the image-sensor operation, e.g. image processing within the image-sensor for variable integration time

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Solid State Image Pick-Up Elements (AREA)

Abstract

An image sensor for an electronic imaging device includes an array of pixels. Each pixel (2) includes a switch device (8) having a first switch input, a second switch input and a switch output that is switchably connected to the first switch input. The switch device (8) is constructed and arranged to disconnect the switch output from the first switch input at a capture moment determined by comparing a first input signal VIn1 and a second input signal VIn2. A photosensor device (4) has a photosensor output that is connected to the first switch input. A first signal -generator (18) generates alternately a reference signal Vref and a reference calibration signal Vrefcal, and is connected to the second switch input. A second signal generator (30) generates a photosensor reference signal Vpcal, and is switchably connected to the first switch input. A readout circuit (10) is arranged to capture the switch output signal Vs at the capture moment and provide an output signal that is related to the switch output signal.
PCT/GB2009/001235 2008-05-22 2009-05-19 Image sensor WO2009141590A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0809337.9 2008-05-22
GB0809337A GB2460260A (en) 2008-05-22 2008-05-22 Image sensor

Publications (2)

Publication Number Publication Date
WO2009141590A2 WO2009141590A2 (en) 2009-11-26
WO2009141590A3 true WO2009141590A3 (en) 2010-03-11

Family

ID=39615935

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2009/001235 WO2009141590A2 (en) 2008-05-22 2009-05-19 Image sensor

Country Status (2)

Country Link
GB (1) GB2460260A (en)
WO (1) WO2009141590A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0920750D0 (en) * 2009-11-26 2010-01-13 Isis Innovation High dynamic range pixel
JP5814539B2 (en) * 2010-11-17 2015-11-17 キヤノン株式会社 Imaging device
US9041838B2 (en) 2012-02-14 2015-05-26 Gentex Corporation High dynamic range imager system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051964A1 (en) * 2005-11-01 2007-05-10 Isis Innovation Limited Image sensor

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6538695B1 (en) * 1998-11-04 2003-03-25 Ic Media Corporation On-chip fixed-pattern noise calibration for CMOS image sensors
US6069377A (en) * 1999-05-13 2000-05-30 Eastman Kodak Company Image sensor incorporating saturation time measurement to increase dynamic range
AU2002215747A1 (en) * 2000-12-28 2002-07-16 Symagery Microsystems Inc. Pixel cell architecture
US6642503B2 (en) * 2001-06-13 2003-11-04 Texas Instruments Incorporated Time domain sensing technique and system architecture for image sensor
EP1530363B1 (en) * 2003-11-04 2010-08-11 STMicroelectronics (Research & Development) Limited Improvements in or relating to image sensors
JP4529834B2 (en) * 2005-07-29 2010-08-25 ソニー株式会社 Solid-state imaging device, driving method of solid-state imaging device, and imaging device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007051964A1 (en) * 2005-11-01 2007-05-10 Isis Innovation Limited Image sensor

Also Published As

Publication number Publication date
GB2460260A (en) 2009-11-25
GB0809337D0 (en) 2008-07-02
WO2009141590A2 (en) 2009-11-26

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