Invention Grant
- Patent Title: Low frequency modulated chirp minimum distance measurement
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Application No.: US15868801Application Date: 2018-01-11
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Publication No.: US10976423B2Publication Date: 2021-04-13
- Inventor: Marek Hustava , Tomas Suchy
- Applicant: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Applicant Address: US AZ Phoenix
- Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Current Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- Current Assignee Address: US AZ Phoenix
- Agency: Polansky & Associates, P.L.L.C.
- Agent Paul J. Polansky; Rosalynn M. Smith
- Main IPC: G01S7/52
- IPC: G01S7/52 ; G01S7/527 ; G01S15/931 ; G01S15/10

Abstract:
In one form, an acoustic distance measuring circuit includes a transmitter amplifier, an acoustic transducer, and a sensing circuit. The sensing circuit includes an input adapted to be coupled to the acoustic transducer, a first correlation output for providing a chirp tail correlation signal, and a second output for providing a full chirp correlation signal. The sensing circuit provides the chirp tail correlation signal in response to correlating a chirp tail signal pattern with a received signal, and provides a full chirp correlation signal in response to correlating a full chirp signal pattern with the received signal. Further, the acoustic distance measuring circuit includes a controller adapted to be coupled to the sensing circuit that has a first input for receiving the chirp tail correlation signal and the full chirp correlation signal for determining a short range time of flight signal and a long range time of flight signal.
Public/Granted literature
- US20190212423A1 LOW FREQUENCY MODULATED CHIRP MINIMUM DISTANCE MEASUREMENT Public/Granted day:2019-07-11
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