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Class Information
Number: 250/214LA
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Special photocell or electron tube circuits > Amplifier type > Light amplifier type

Sub-classes under this class:

Class Number Class Name Patents
250/214LS Switching type 186
250/214VT Vacuum tube type 718

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8692180 Readout circuit for touch sensor Apr. 8, 2014
8598506 Solid-state image pickup apparatus and driving method therefor Dec. 3, 2013
8476572 Optical receiver circuit Jul. 2, 2013
8461509 Optical sensor device including amplifier circuit and feedback resistor Jun. 11, 2013
8445832 Optical communication device May. 21, 2013
8238760 Optical receiver with improved noise tolerance Aug. 7, 2012
8160457 PIN/TIA system for use in FTTx applications Apr. 17, 2012
8153953 Light receiving circuit Apr. 10, 2012
8143564 Photodetection circuit Mar. 27, 2012
8139957 High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit Mar. 20, 2012
8121495 Current mirror circuit and optical receiver circuit using the same Feb. 21, 2012
8055138 Photosensor operating point Nov. 8, 2011
8053717 Photoelectric conversion device having a reference voltage generation circuit with a resistor and a second diode element and electronic device having the same Nov. 8, 2011
8039782 Optical sensor device and electronic apparatus with an amplifier circuit and dual level shift circuit Oct. 18, 2011
7989753 Photodetector having wide dynamic range and low temperature dependence Aug. 2, 2011
7968835 Electronic device having LED with variable brightness Jun. 28, 2011
7970291 Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus Jun. 28, 2011
7822349 Digital iterative gain control Oct. 26, 2010
7783205 Learning infrared amplifier for remote control devices Aug. 24, 2010
7755831 Night vision glasses Jul. 13, 2010
7728274 Imaging system with negative electron affinity photocathode Jun. 1, 2010
7723667 Phototransistor with source layer between barrier layer and photosensitive semiconductor layer and a gate layer for controlling the barrier height of the barrier layer May. 25, 2010
7714267 Intensity detector circuitry using a cascade of gain elements May. 11, 2010
7676152 Optical power monitor for PON telecommunication Mar. 9, 2010
7657191 Variable bandwidth transimpedance amplifier with one-wire interface Feb. 2, 2010
7620330 Optical receiver device and method Nov. 17, 2009
7509052 Optical receiver, optical transmitter and optical transceiver Mar. 24, 2009
7470885 Photodetector-amplifier circuit and optical pickup device Dec. 30, 2008
7460788 Transmitting and receiving device Dec. 2, 2008
7460792 Receiving circuit and electronic apparatus for optical communication Dec. 2, 2008
7449670 Amplifier circuit and optical pickup device Nov. 11, 2008
7449669 Receiving apparatus Nov. 11, 2008
7427733 Gated image intensifier Sep. 23, 2008
7423250 Systems, circuits and methods for extending the detection range of an inspection system by avoiding circuit saturation Sep. 9, 2008
7376359 Digital regulated light receive module and regulation method May. 20, 2008
7373091 Multicasting optical switch fabric and method of detection based on novel heterodyne receiver May. 13, 2008
7330668 Low noise light receiver Feb. 12, 2008
7326905 Photodetector and optical receiver Feb. 5, 2008
7317566 Electrode with transparent series resistance for uniform switching of optical modulation devices Jan. 8, 2008
7297921 Photodetection circuit and confocal microscope that has it Nov. 20, 2007
7298978 Method and apparatus for optimizing decision level of signal output from optical receiver Nov. 20, 2007
7274010 Semiconductor optical amplifier device amplifying an externally applied light signal, semiconductor optical amplification driving device and semiconductor light receiving apparatus Sep. 25, 2007
7212749 Signal receiver having wide band amplification capability May. 1, 2007
7173237 Ruggedized digital low-light viewing device Feb. 6, 2007
7170606 Multi-way LED-based surface reflectance sensor and spectrophotometer Jan. 30, 2007
7129462 Digitally enhanced image intensification camera Oct. 31, 2006
7113321 Optical deflection apparatus and manufacturing method thereof, optical deflection array, imaging apparatus, and image projection display apparatus Sep. 26, 2006
7057149 Method and system for controlling a secondary amplifier with a primary amplifier in an optical network Jun. 6, 2006
6974946 Transmission stacked photodetector Dec. 13, 2005
6927383 Radiation hardened visible P-I-N detector Aug. 9, 2005

1 2 3 4

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