Processing

Please wait...

Settings

Settings

1. CA2320153 - VEHICLE VISION SYSTEM

Office Canada
Application Number 2320153
Application Date 30.12.1998
Publication Number 2320153
Publication Date 08.07.1999
Publication Kind A1
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
222
Studio circuitry; Studio devices; Studio equipment
225
Television cameras
235
Circuitry for compensating for variation in the brightness of the object
G PHYSICS
07
CHECKING-DEVICES
C
TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS, OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
5
Registering or indicating the working of vehicles
08
Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle, or waiting time
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
44
Receiver circuitry
57
Control of contrast or brightness
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
9
Details of colour television systems
64
Circuits for processing colour signals
73
colour balance circuits, e.g. white balance circuits, colour temperature control
H04N 5/235
G07C 5/08
H04N 5/57
H04N 9/73
CPC
G07C 5/0891
H04N 5/2353
H04N 5/57
H04N 9/73
Applicants GENTEX CORPORATION
Inventors STAM, JOSEPH S.
FOSSUM, ERIC R.
BECHTEL, JON H.
KEMENY, SABRINA E.
Priority Data 09/001,855 31.12.1997 US
Title
(EN) VEHICLE VISION SYSTEM
(FR) SYSTEME DE VISION POUR VEHICULE
Abstract
(EN)
A vehicle viewing system including a camera system for generating a signal corresponding to a scene by integrating light from the scene incident on pixel cells having a variable integration time, a display system for presenting a visual representation of the scene, and a processor system operable to determine the camera system integration time based on brightness levels in the scene. The camera system preferably includes an optical array of photogate CMOS active pixel sensor cells and support electronics implementing a plurality of integration and processing architectures. The camera system may also include digitized output and an input attenuating filter to limit light striking the optical array. The processor system includes an image brightness detector to determine measures of overall image brightness and a display pixel luminance mapping control to determine luminance settings for the display system. The image brightness detector may include circuitry that produces a brightness histogram. The processor system may determine the intensity of the display system based on the brightness of the scene, ambient light levels, and glare on the display. The display system includes a display and a display attenuation filter for limiting the intensity as viewed by the operator.