Patent ID: 11899106
Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 14:
15. A method of measuring an acoustic distance of an obstacle from a vehicle, comprising:
providing a selected one of an amplitude-modulation (AM) signal in an AM mode and a chirp signal in a chirp mode using a transmitter adapted to be coupled to an acoustic transducer;
receiving a digital received signal using a receiver adapted to be coupled to said acoustic transducer;
during a first measurement period:
placing a transmitter into one of said AM mode and said chirp mode using a first channel;
selectively detecting a direct echo in said first channel of said digital received signal of said one of said AM signal and said chirp signal; and
selectively detect an indirect echo in a second channel of said digital received signal of another one of said AM signal and said chirp signal.