Patent ID: 9702974
Date: 2017-07-11
CPC Classifications: G01S

Claim:
1. A method for operating at least one ultrasonic sensor of a driver assistance system in a motor vehicle, comprising: modulating an output sound signal of an ultrasonic sensor in accordance with a type of modulation, and via the modulation, impressing a specific codeword on the output sound signal, wherein, for a first driver-assistive functionality of the driver assistance system, at least one selected from a group consisting of a first modulation of the output sound signal of the ultrasonic sensor and a first length of the codeword is used; wherein, for a second driver-assistive functionality of the driver assistance system, different from the first driver-assistive functionality, at least one selected from a group consisting of a second modulation of the output sound signal of the ultrasonic sensor and a second length of the codeword is used; wherein the first and the second driver-assistive functionalities are selected from a group consisting of an assistive functionality that controls vehicle movement and an assistive functionality that provides feedback to the driver; wherein the first driver-assistive, functionality requires a sensing range shorter than the second driver-assistive functionality; and selecting, based on the shorter sensing range of the first driver assistive functionality, a first length of the codeword shorter than a second length of the codeword for the second-driver-assistive functionality with the longer sensing range, to enable sensing in the shorter and longer sensing ranges, respectively.