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Class Information
Number: 250/214A
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Special photocell or electron tube circuits > Amplifier type
Description:
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6504141 |
Adaptive amplifier circuit with enhanced dynamic range |
Jan. 7, 2003 |
| 6501064 |
Image sensor with active sensor elements |
Dec. 31, 2002 |
| 6498334 |
Infrared transreceiver with isolated analog output |
Dec. 24, 2002 |
| 6489603 |
Method for calibrating a photoelectric cell |
Dec. 3, 2002 |
| 6479810 |
Light sensor system and a method for detecting ambient light |
Nov. 12, 2002 |
| 6462327 |
Analog optical receiver and variable gain transimpedance amplifier useful therewith |
Oct. 8, 2002 |
| 6459078 |
Image sensor utilizing a low FPN high gain capacitive transimpedance amplifier |
Oct. 1, 2002 |
| 6456141 |
Current pulse receiving circuit |
Sep. 24, 2002 |
| 6455837 |
Photodetector apparatus |
Sep. 24, 2002 |
| 6448860 |
Device for converting small currents impressed at the input of the device by a non-ideal electric source of current into voltage signals |
Sep. 10, 2002 |
| 6444970 |
Miniature low-noise photodiode system |
Sep. 3, 2002 |
| 6437320 |
Optical amplifier control unit, optical amplification apparatus, and transmission system |
Aug. 20, 2002 |
| 6437309 |
Photoelectric transducer |
Aug. 20, 2002 |
| 6437308 |
Light detection circuit of an electronic device |
Aug. 20, 2002 |
| 6426494 |
Optical signal detector and optical signal detecting method |
Jul. 30, 2002 |
| 6417503 |
Optical sensor circuit with output changing means |
Jul. 9, 2002 |
| 6403943 |
Variable resistance circuit, operational amplification circuit, semiconductor integrated circuit, time constant switching circuit and waveform shaping circuit |
Jun. 11, 2002 |
| 6396614 |
Optical signal receiving circuit and method for receiving optical signal |
May. 28, 2002 |
| 6396351 |
Preamplifier circuit for a photodetector |
May. 28, 2002 |
| 6384590 |
Light receiving circuit for use in electro-optic sampling oscilloscope |
May. 7, 2002 |
| 6384399 |
Optical receiving circuit comprising a reflection coefficient setting circuit |
May. 7, 2002 |
| 6384401 |
Method and apparatus for detecting low light levels |
May. 7, 2002 |
| 6384689 |
Preamplifier for optical receivers |
May. 7, 2002 |
| 6384663 |
Circuit for high precision detection of the time of arrival of photons falling on single photon avalanche diodes |
May. 7, 2002 |
| 6365887 |
Image reading apparatus |
Apr. 2, 2002 |
| 6362467 |
Fast-switching comparator with hysteresis |
Mar. 26, 2002 |
| 6359715 |
Photoelectric conversion, method light receiving circuit, and optical communication system |
Mar. 19, 2002 |
| 6359517 |
Photodiode transimpedance circuit |
Mar. 19, 2002 |
| 6348682 |
Photodetector circuit and methods |
Feb. 19, 2002 |
| 6348681 |
Method and circuit for setting breakpoints for active pixel sensor cell to achieve piecewise linear transfer function |
Feb. 19, 2002 |
| 6342694 |
Adjustable-free optical signal receiver |
Jan. 29, 2002 |
| 6340916 |
Ransimpedance amplifier circuit |
Jan. 22, 2002 |
| 6339216 |
Time-resolved breast imaging device |
Jan. 15, 2002 |
| 6339363 |
Low FPN high gain capacitive transimpedance amplifier for use with capacitive sensors |
Jan. 15, 2002 |
| 6333804 |
Optical module for receiving optical signal from optical fiber |
Dec. 25, 2001 |
| 6331700 |
Detector array variable gain amplifiers for use in a laser imaging apparatus |
Dec. 18, 2001 |
| 6329881 |
Preamplifier |
Dec. 11, 2001 |
| 6323734 |
Trans-impedance amplifier |
Nov. 27, 2001 |
| 6320179 |
Device noise measurement system |
Nov. 20, 2001 |
| 6313458 |
Gain-adjustable photoreceiver circuit with photoelectric converter and amplifier |
Nov. 6, 2001 |
| 6307196 |
Detection circuit having a variable impedance circuit |
Oct. 23, 2001 |
| 6304357 |
Optical receiver |
Oct. 16, 2001 |
| 6303922 |
Range-switching optical receiver with high sensitivity and wide dynamic range |
Oct. 16, 2001 |
| 6297701 |
Wide dynamic range transimpedance amplifier |
Oct. 2, 2001 |
| 6291810 |
Image sensor |
Sep. 18, 2001 |
| 6288387 |
Apparatus and method for performing optical signal intensity correction in electro-optical sensor arrays |
Sep. 11, 2001 |
| 6285017 |
Alignment indicator for photoelectric sensors |
Sep. 4, 2001 |
| 6275114 |
Impedance matched CMOS transimpedance amplifier for high-speed fiber optic communications |
Aug. 14, 2001 |
| 6268612 |
Moisture sensor with autobalance control |
Jul. 31, 2001 |
| 6259086 |
Method and device for receiving a phase-modulated light signal and for the detection of alignment errors |
Jul. 10, 2001 |
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