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Class Information
Number: 375/317
Name: Pulse or digital communications > Receivers > Automatic baseline or threshold adjustment
Description: Subject matter where the received signal is compared to a reference voltage or current level, the reference level being automatically adjusted.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4939750 |
Adaptive signal discrimination circuit and a method for discriminating high and low level of data signals |
Jul. 3, 1990 |
| 4926442 |
CMOS signal threshold detector |
May. 15, 1990 |
| 4914418 |
Outbound detector system and method |
Apr. 3, 1990 |
| 4910753 |
FSK demodulating device |
Mar. 20, 1990 |
| 4899367 |
Multi-level quadrature amplitude modulator system with fading compensation means |
Feb. 6, 1990 |
| 4897857 |
FSK demodulating device |
Jan. 30, 1990 |
| 4879727 |
Adaptive threshold sampling controller |
Nov. 7, 1989 |
| 4873700 |
Auto-threshold/adaptive equalizer |
Oct. 10, 1989 |
| 4860010 |
Automatic drift control circuit |
Aug. 22, 1989 |
| 4823360 |
Binary data regenerator with adaptive threshold level |
Apr. 18, 1989 |
| 4783658 |
Method and system for detecting encoded radio signals |
Nov. 8, 1988 |
| 4780886 |
Device for detecting a data signal energy drop |
Oct. 25, 1988 |
| 4769760 |
Terrain biased dynamic multiple threshold synchronization method and apparatus |
Sep. 6, 1988 |
| 4744093 |
Method of detecting phase pulse signals from an AC distribution line |
May. 10, 1988 |
| 4736391 |
Threshold control with data receiver |
Apr. 5, 1988 |
| 4709158 |
Arrangement for restoring the L.F. content of a digital signal |
Nov. 24, 1987 |
| 4700365 |
Digital threshold detector with hysteresis |
Oct. 13, 1987 |
| 4700357 |
Synchronizing stage for the acquisition of a synchronizing signal having low jitter from a biternary data sequence |
Oct. 13, 1987 |
| 4697275 |
Receiving circuit for signal transmission systems |
Sep. 29, 1987 |
| 4682343 |
Processing circuit with asymmetry corrector and convolutional encoder for digital data |
Jul. 21, 1987 |
| 4672635 |
Circuit arrangement for noise suppression in binary data signals in a digital transmission system |
Jun. 9, 1987 |
| 4654862 |
Digital signal transmission cable noise analyzer |
Mar. 31, 1987 |
| 4652775 |
Adaptive threshold detector |
Mar. 24, 1987 |
| 4649551 |
Decoder for a frequency-keyed signal, particularly an FSK-video text signal |
Mar. 10, 1987 |
| 4641324 |
Signal correction apparatus |
Feb. 3, 1987 |
| 4639936 |
Data transmission signal apparatus |
Jan. 27, 1987 |
| 4637036 |
Circuit arrangement for a data acquisition circuit of a PCM processor and a method for improving waveform of PCM signal eye pattern |
Jan. 13, 1987 |
| 4619002 |
Self-calibrating signal strength detector |
Oct. 21, 1986 |
| 4602374 |
Multi-level decision circuit |
Jul. 22, 1986 |
| 4598268 |
Digital span conversion circuit |
Jul. 1, 1986 |
| 4590600 |
Dynamic digital equalizer |
May. 20, 1986 |
| 4584690 |
Alternate Mark Invert (AMI) transceiver with switchable detection and digital precompensation |
Apr. 22, 1986 |
| 4581725 |
Method and system for gain selection |
Apr. 8, 1986 |
| 4575683 |
Apparatus and method for removing an offset signal |
Mar. 11, 1986 |
| 4571547 |
Adaptive signal detection system especially for physiological signals such as the R waves of ECG signals, which is desensitized to artifacts |
Feb. 18, 1986 |
| 4553102 |
Multilevel amplitude modulation demodulator with DC drift compensation |
Nov. 12, 1985 |
| 4540897 |
Digital modulation signal reading device |
Sep. 10, 1985 |
| 4529892 |
Detection circuitry with multiple overlapping thresholds |
Jul. 16, 1985 |
| 4509180 |
Method and an apparatus for correcting distortion of binary received signals |
Apr. 2, 1985 |
| 4503547 |
Electrical data pulse processing |
Mar. 5, 1985 |
| 4494241 |
Installation for the transmission of informations by an optical bus line |
Jan. 15, 1985 |
| 4479266 |
Multiple-threshold optical receiver for a variable-rate digital data transmission system |
Oct. 23, 1984 |
| 4475210 |
Data eye monitor |
Oct. 2, 1984 |
| 4456992 |
Method and apparatus for enhancing the probability of error-free reception of digital signals |
Jun. 26, 1984 |
| 4449223 |
Eye opening monitor |
May. 15, 1984 |
| 4449061 |
Wave-shaping circuit for digital signal |
May. 15, 1984 |
| 4449102 |
Adaptive threshold circuit |
May. 15, 1984 |
| 4429404 |
FSK Data operated switch |
Jan. 31, 1984 |
| 4425548 |
Digital signal processing circuit |
Jan. 10, 1984 |
| 4414659 |
Method and apparatus for encoding digital data so as to reduce the D.C. and low frequency content of the signal |
Nov. 8, 1983 |
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