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

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8525094 Photoelectric conversion circuit Sep. 3, 2013
8420994 Detecting device and solid-state imaging device Apr. 16, 2013
8330093 Apparatus and method for preventing charge pumping in series connected diode stacks Dec. 11, 2012
8188418 Switchable hybrid receiver for coherent and direct optical detection May. 29, 2012
8101900 Circuit and method for operating a circuit Jan. 24, 2012
8017901 Photodetector Sep. 13, 2011
7956314 Microwave switching element Jun. 7, 2011
7859673 Method and arrangement for detecting light signals Dec. 28, 2010
7829836 Digital signal input device and method of controlling the same having a switching element that controls a period of applying direct-current voltage to a charging circuit Nov. 9, 2010
7767953 Voltage generator, analog-to-digital converter, and image sensor system Aug. 3, 2010
7605359 Light source frequency detection circuit for image sensor Oct. 20, 2009
7579578 Advanced multipurpose pseudospark switch having a hollow cathode with a planar spiral electrode and an aperture Aug. 25, 2009
7566859 Infrared ray switching device Jul. 28, 2009
7531784 Semiconductor device and electronic appliance using the same May. 12, 2009
7501611 Photo detector apparatus Mar. 10, 2009
7476840 Sensing light and sensing the state of a memory cell an aid of a switch controlled by a schmidt trigger Jan. 13, 2009
7470885 Photodetector-amplifier circuit and optical pickup device Dec. 30, 2008
7462812 Optical switch apparatus and optical switching system Dec. 9, 2008
7411172 Method and apparatus for resetting a high speed latch circuit Aug. 12, 2008
7408141 Light-receiving amplifier circuit and optical pick-up device using the same Aug. 5, 2008
7406018 Signal generating circuit and optical pickup device provided therewith Jul. 29, 2008
7391408 Adjustable apparatus in display devices for automatic adjusting brightness Jun. 24, 2008
7388186 Optically controlled MEMS devices Jun. 17, 2008
7368700 Optical switch apparatus and optical switching system May. 6, 2008
7345270 Photocontrol with radio-controlled timer and a decoder Mar. 18, 2008
7319221 Light-receiving device, optical pickup, and optical disc apparatus Jan. 15, 2008
7167655 Measurement system for wide dynamic range optical power meter Jan. 23, 2007
7129463 Photocurrent sensing circuit having stabilized feedback loop Oct. 31, 2006
7098438 Method and apparatus for resetting a high speed latch circuit Aug. 29, 2006
7091467 Image sensor Aug. 15, 2006
6984815 Electronic pulse detection apparatus and electronic pulse detection chip Jan. 10, 2006
6895190 Switchable bandwidth lowpass filter May. 17, 2005
6815658 Testing circuit for charge detection circuit, LSI, image sensor, and testing method for the charge detection circuit Nov. 9, 2004
6815655 Method and apparatus for sequencing power in a photodetector circuit Nov. 9, 2004
6809308 Photodetector and photodetecting system capable of detecting information about the two-dimensional intensity distribution and wavelength distribution of incident light Oct. 26, 2004
6803559 Optically controlled MEM switches Oct. 12, 2004
6777665 High frequency optical signal sampling device Aug. 17, 2004
6765188 Method and apparatus for converting the output of a photodetector to log voltage Jul. 20, 2004
6765189 Small form factor in-line switched multichannel fiber optic power monitoring apparatus Jul. 20, 2004
6756577 Light detector and light detecting IC therefor Jun. 29, 2004
6740807 Light-receiving device and image sensor May. 25, 2004
6707025 High dynamic range receiver Mar. 16, 2004
6696680 Variable resistance circuit, operational amplification circuit and semiconductor integrated circuit Feb. 24, 2004
6646250 Method and system for information transfer and replication between spatially distinct points via engineered quantum states Nov. 11, 2003
6639205 Optically controlled MEM switches Oct. 28, 2003
6600146 Photoelectric switches Jul. 29, 2003
6593564 Photo switching device having a control circuit with a gate controlled device Jul. 15, 2003
6590198 Video bus for high speed multi-resolution imagers Jul. 8, 2003
6501064 Image sensor with active sensor elements Dec. 31, 2002
6495816 Method and apparatus for converting the output of a photodetector to a log voltage Dec. 17, 2002

1 2 3 4

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