CMOS camera with integral laser ranging and velocity measurement
First Claim
Patent Images
1. A method of adjusting vehicle speed, comprising:
- generating an image of a view in front of the vehicle on a portion of an imaging array;
identifying a target object;
confirming from the image that the target object is associated with another vehicle;
emitting a modulated laser pulse;
directing the emitted laser pulse at the target object;
extracting a reference portion of the emitted modulated laser pulse;
receiving a reflected portion of the emitted modulated laser pulse on a portion of the imaging array from the target object;
combining the reflected portion with the reference portion on a portion of an imaging array;
determining a relative velocity based on the combined reflected portion and reference portion; and
adjusting the speed of the vehicle relative to the target object.
4 Assignments
0 Petitions
Accused Products
Abstract
The invention provides a method and system for adjusting vehicle speed, beginning with a modulated laser pulse being emitted. A reference portion of the emitted modulated laser pulse is extracted, a reflected portion of the emitted modulated laser pulse is received, and the reflected portion is combined with the reference portion on a portion of an imaging array. A determination of a relative velocity is based on the combined reflected portion and reference portion.
-
Citations
15 Claims
-
1. A method of adjusting vehicle speed, comprising:
-
generating an image of a view in front of the vehicle on a portion of an imaging array;
identifying a target object;
confirming from the image that the target object is associated with another vehicle;
emitting a modulated laser pulse;
directing the emitted laser pulse at the target object;
extracting a reference portion of the emitted modulated laser pulse;
receiving a reflected portion of the emitted modulated laser pulse on a portion of the imaging array from the target object;
combining the reflected portion with the reference portion on a portion of an imaging array;
determining a relative velocity based on the combined reflected portion and reference portion; and
adjusting the speed of the vehicle relative to the target object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for adjusting vehicle speed, the system comprising:
-
an imaging array for generating an image of a view in front of the vehicle;
a target object to reference vehicle speed from the target object associated with another vehicle, the target object for imaging by the array;
a laser range finder circuit coupled with the imaging array, the laser range finder circuit using the imaging array to range-find the target object by emitting a modulated laser pulse;
directing the emitted laser pulse at the target object;
extracting a reference position of the emitted modulated laser pulse;
receiving a reflected portion of the emitted modulated laser pulse on a portion of the imaging array from the target object;
combining the reflected portion with the reference portion on a portion of an imaging array; and
determining a relative velocity based on the combined reflected portion and reference portion; and
an imaging system coupled to the laser range finder circuit and imaging array, the imaging system identifies the target object, confirms from the image that the target object is associated with another vehicle;
steers the emitted laser pulse at the target object, and provides a control signal for adjusting the speed of the vehicle relative to the target object. - View Dependent Claims (11, 12, 13, 14, 15)
-
Specification