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Class Information
Number: 367/102
Name: Communications, electrical: acoustic wave systems and devices > Echo systems > Distance or direction finding > Frequency modulation > Linear modulation (e.g., sawtooth)
Description: Subject matter in which the frequency increases or decreases repetitively at a constant rate between repetitions.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6678210 |
Frequency division beamforming for sonar arrays |
Jan. 13, 2004 |
| 6087981 |
Method for pulse compression with a stepped frequency waveform |
Jul. 11, 2000 |
| 6011754 |
Personal object detector with enhanced stereo imaging capability |
Jan. 4, 2000 |
| 5963509 |
Method and device for distance measurement |
Oct. 5, 1999 |
| H1797 |
Linear frequency modulation apparatus and technique |
Jul. 6, 1999 |
| 5724313 |
Personal object detector |
Mar. 3, 1998 |
| 5298962 |
Pulse compression signal processor utilizing identical saw matched filters for both up and down chirps |
Mar. 29, 1994 |
| 5212490 |
Echo ranging system for detecting velocity and range of targets using composite doppler invariant-like transmissions with suppression of false targets |
May. 18, 1993 |
| 5212489 |
Echo ranging system for detecting velocity of targets using composite doppler invariant transmissions |
May. 18, 1993 |
| 4960329 |
Chirp pulse echo ranging apparatus |
Oct. 2, 1990 |
| 4926693 |
Contactless actuator piston proximity sensor |
May. 22, 1990 |
| 4812035 |
AM-FM laser radar |
Mar. 14, 1989 |
| 4674069 |
System for collecting and processing data relating to moving bodies |
Jun. 16, 1987 |
| RE32252 |
Method of and apparatus for providing information as to the existence or position of objects |
Sep. 23, 1986 |
| 4613231 |
Laser range finder with non-linearity compensation |
Sep. 23, 1986 |
| 4472793 |
Data selector circuit with channel skipper for data acquisition system |
Sep. 18, 1984 |
| 4449209 |
Utilization of entire transmitted bandwidth in continuous transmission FM sonar |
May. 15, 1984 |
| 4398275 |
Linear frequency sweep generator for continuous transmission FM sonar |
Aug. 9, 1983 |
| 4310903 |
Method of and apparatus for providing information as to the existence or position of objects |
Jan. 12, 1982 |
| 4292678 |
Method of and apparatus for echo location of objects |
Sep. 29, 1981 |
| 4287578 |
Method for shaping and aiming narrow beams |
Sep. 1, 1981 |
| 4279019 |
Method and apparatus for delay analysis of energy transmitted through a medium |
Jul. 14, 1981 |
| 4275460 |
Real-time audio spectrum analyzer |
Jun. 23, 1981 |
| 4253166 |
Target location systems |
Feb. 24, 1981 |
| 4245220 |
Target location systems |
Jan. 13, 1981 |
| 4052977 |
Methods of and apparatus for ascertaining the characteristics of motion of inaccessible moving elements |
Oct. 11, 1977 |
| 4038612 |
Swept oscillator automatic linearizer |
Jul. 26, 1977 |
| 3997866 |
Acoustic bus passenger counter |
Dec. 14, 1976 |
| 3987403 |
Sensory aids for the blind |
Oct. 19, 1976 |
| 3939463 |
Acoustic transponder navigation system |
Feb. 17, 1976 |
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