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Class Information
Number: 708/822
Name: Electrical computers: arithmetic processing and calculating > Electrical analog calculating computer > Particular function performed > Differentiation
Description: Subject matter wherein the function performed is differentiation of at least one of a plurality of input signals.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7555507 |
Apparatus for solving differential equations |
Jun. 30, 2009 |
| 5596562 |
Controlling method and apparatus for supporting hard disk and/or CD-ROM drives through the PCMCIA interface |
Jan. 21, 1997 |
| 5329478 |
Circuit and method for estimating gradients |
Jul. 12, 1994 |
| 5168461 |
Switched capacitor differentiators and switched capacitor differentiator-based filters |
Dec. 1, 1992 |
| 4819199 |
Extrema coder employing noisy limiting amplifier stages |
Apr. 4, 1989 |
| 4580227 |
Device for determining and following the instantaneous coordinates of the extreme value of a curve |
Apr. 1, 1986 |
| 4454604 |
Virtual time base direct synchronizer and method therefor |
Jun. 12, 1984 |
| 4418566 |
Gas analyzing techniques |
Dec. 6, 1983 |
| 4409667 |
Process and device for the derivation of an analog electric signal |
Oct. 11, 1983 |
| 4331877 |
Transverse tomography with optical filtering |
May. 25, 1982 |
| 4289397 |
Laser ceilometer signal processing means |
Sep. 15, 1981 |
| 4138728 |
Electronic tachometer with variable bandwidth differentiator |
Feb. 6, 1979 |
| 4106096 |
Derivative measurement by frequency mixing |
Aug. 8, 1978 |
| 4068811 |
Hotbox detector |
Jan. 17, 1978 |
| 4062632 |
Constant modulation index technique for measuring the derivatives of device parameters |
Dec. 13, 1977 |
| 4025763 |
Process control including simulating a derivative |
May. 24, 1977 |
| 4021658 |
Angular rate deriving apparatus |
May. 3, 1977 |
| 4011440 |
System for generating an angular rate signal from an angular position signal utilizing a constant amplitude-variable carrier phase signal |
Mar. 8, 1977 |
| 3946691 |
Autopilot employing improved hall-effect direction sensor |
Mar. 30, 1976 |
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