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

Claim 9:
10. The acoustic distance measuring circuit of claim 9, wherein, further comprising:
a second transmitter having an output adapted to be coupled to a second acoustic transducer for providing said selected one of said AM signal in said AM mode and said chirp signal in said chirp mode;
a second receiver having an input adapted to be coupled to said second acoustic transducer, and an output for providing a second digital received signal; and
a second controller operative during said first measurement period to:
place said second transmitter into said one of said AM mode and said chirp mode using said second channel, selectively detect a third direct echo in said first channel of said second digital received signal of said one of said AM signal and said chirp signal, and selectively detect a third indirect echo in said second channel of said digital received signal of said one of said AM signal and said chirp signal, and

during said second measurement period to:
place said second transmitter into said other one of said AM mode and said chirp mode using said second channel, selectively detect a fourth direct echo in said second channel of said digital received signal of said other one of said AM signal and said chirp signal, and selectively detect a fourth indirect echo in said second channel of said second digital received signal of said one of said AM signal and said chirp signal.