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Class Information
Number: 367/67
Name: Communications, electrical: acoustic wave systems and devices > Seismic prospecting > Land-reflection type > Signal analysis and/or correction > Gain control > Digital
Description: Subject matter wherein the signal is in the form of discrete pulses.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5563847 |
Seismic signal acquisition method and device |
Oct. 8, 1996 |
| 5113192 |
Method for using seismic data acquisition technology for acquisition of ground penetrating radar data |
May. 12, 1992 |
| 4999817 |
Programmable gain control for rotating transducer ultrasonic tools |
Mar. 12, 1991 |
| 4813026 |
Method for logarithmic analysis of seismic reflection signals |
Mar. 14, 1989 |
| 4779055 |
Device for amplifying and sampling high dynamic signals |
Oct. 18, 1988 |
| 4727521 |
Seismic amplifier means and method |
Feb. 23, 1988 |
| 4725950 |
Marine seismic signal processor with D.C. offset compensation method |
Feb. 16, 1988 |
| 4679162 |
Wide dynamic range linear to log converter with microcomputer control |
Jul. 7, 1987 |
| 4646275 |
Dynamic range compression for variable area or wiggle trace display method and apparatus |
Feb. 24, 1987 |
| 4535299 |
Compound floating point amplifier |
Aug. 13, 1985 |
| 4527148 |
Analog-digital converter |
Jul. 2, 1985 |
| 4449120 |
Method for amplifying multiplexed signals through different gain amplification units for selecting an optimum gain signal and device therefore |
May. 15, 1984 |
| 4412207 |
Digital induction logging tool including a floating point A/D |
Oct. 25, 1983 |
| 4393369 |
Floating-point A/D and D/A converter |
Jul. 12, 1983 |
| 4383247 |
Gain-step companding analog to digital converter |
May. 10, 1983 |
| 4378527 |
Device for amplifying and sampling analog signals |
Mar. 29, 1983 |
| 4218765 |
Two-dimensional frequency domain filtering |
Aug. 19, 1980 |
| 4110723 |
Ultrasonic apparatus for medical diagnosis |
Aug. 29, 1978 |
| 4084151 |
System for recording and processing seismic reflection signals |
Apr. 11, 1978 |
| 4066992 |
Seismic mine monitoring system |
Jan. 3, 1978 |
| 4064480 |
Means and method for recording seismic signals |
Dec. 20, 1977 |
| 4048635 |
Seismic playback/monitor system |
Sep. 13, 1977 |
| 4042906 |
Automatic data acquisition method and system |
Aug. 16, 1977 |
| 4042907 |
Apparatus for preventing cycle skipping in processing acoustic well-logging signals |
Aug. 16, 1977 |
| 4042905 |
Data acquisition, transport and storage system |
Aug. 16, 1977 |
| 4031505 |
Seismic system with signal-to-noise determination |
Jun. 21, 1977 |
| 4031504 |
Gain ranging amplifier system |
Jun. 21, 1977 |
| 4031506 |
Multiplexer commutated high pass filter |
Jun. 21, 1977 |
| 4027281 |
Digital recording of sonic log wavetrains |
May. 31, 1977 |
| 4024492 |
Seismic array |
May. 17, 1977 |
| 4021772 |
System for recording seismic reflection signals in true amplitude |
May. 3, 1977 |
| 4017833 |
Summer for group recorder |
Apr. 12, 1977 |
| 4016557 |
Automatic gain controlled amplifier apparatus |
Apr. 5, 1977 |
| 4010462 |
Seismic playback system |
Mar. 1, 1977 |
| 4004268 |
In-line stress/strain detector |
Jan. 18, 1977 |
| 3990036 |
Multiplexing method and apparatus for telemetry of seismic data |
Nov. 2, 1976 |
| 3958213 |
Adaptive gain control and method for signal processor |
May. 18, 1976 |
| 3947806 |
Automatic gain control for seismometer recorders |
Mar. 30, 1976 |
| 3944942 |
Automatic gain control circuit and method |
Mar. 16, 1976 |
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