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1. WO2002037830 - DYNAMIC RANGE EXTENSION FOR CMOS IMAGE SENSORS

Publication Number WO/2002/037830
Publication Date 10.05.2002
International Application No. PCT/US2001/051180
International Filing Date 19.10.2001
Chapter 2 Demand Filed 17.05.2002
IPC
H04N 5/235 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
235Circuitry for compensating for variation in the brightness of the object
H04N 9/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
04Picture signal generators
CPC
H04N 5/235
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
H04N 5/2355
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
2355by increasing the dynamic range of the final image compared to the dynamic range of the electronic image sensor, e.g. by adding correct exposed portions of short and long exposed images
H04N 5/369
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
369SSIS architecture; Circuitry associated therewith
H04N 5/378
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
369SSIS architecture; Circuitry associated therewith
378Readout circuits, e.g. correlated double sampling [CDS] circuits, output amplifiers or A/D converters
H04N 9/045
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
04Picture signal generators
045using solid-state devices
H04N 9/0451
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
04Picture signal generators
045using solid-state devices
0451characterized by colour imaging operations
Applicants
  • MICRON TECHNOLOGY, INC. [US]/[US] (AllExceptUS)
  • FOSSUM, Eric, R. [US]/[US] (UsOnly)
  • WANG, Yibing (Michelle) [CN]/[US] (UsOnly)
  • SANDOR, Barna, L. [US]/[US] (UsOnly)
Inventors
  • FOSSUM, Eric, R.
  • WANG, Yibing (Michelle)
  • SANDOR, Barna, L.
Priority Data
60/242,21520.10.2000US
60/259,35229.12.2000US
60/307,51423.07.2001US
null18.10.2001US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DYNAMIC RANGE EXTENSION FOR CMOS IMAGE SENSORS
(FR) EXTENSION DU DOMAINE DYNAMIQUE POUR DES CAPTEURS D'IMAGE CMOS
Abstract
(EN)
An image sensor (Fig. 3) for capturing and producing an image includes a photoreceptor array that receives light and produces a signal for each pixel of the image. The image sensor further includes amplification circuitry (36) that amplifies the signals. The amplification circuitry (36) provides two distinct gains for each of the signals to produce two output signal levels. The image sensor also includes a fusion module 33), which combines the two output signal levels into one signal level. Accordingly, overall dynamic range of the image sensor is increased.
(FR)
L'invention concerne un capteur d'image, destiné à capturer et à produire une image, comprenant un réseau de photorécepteurs qui reçoit un rayonnement lumineux et produit un signal pour chaque pixel de l'image. Le capteur d'image comprend, en outre, un circuit d'amplification qui permet d'amplifier les signaux. Le circuit d'amplification fournit deux gains distincts pour chaque signal afin de produire deux niveaux de signal de sortie. Le capteur d'image comprend aussi un module de fusion qui combine les deux niveaux de signal de sortie en un niveau de signal. On augmente ainsi le domaine dynamique global du capteur d'image.
Also published as
Latest bibliographic data on file with the International Bureau