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Class Information
Number: 250/214C
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit > Special photocell or electron tube circuits > Compensation

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8674285 Vehicle rearview mirror system Mar. 18, 2014
8658958 Light sensing circuit having programmable current source and method thereof Feb. 25, 2014
8658960 Method and apparatus for correcting excess signals in an imaging system Feb. 25, 2014
8653435 Time-delay integration imaging method and apparatus using a high-speed in-pixel analog photon counter Feb. 18, 2014
8598505 Method and apparatus for cancellation of transient voltage spike Dec. 3, 2013
8592746 Systems and methods for driving an optical modulator Nov. 26, 2013
8581172 High-speed analog photon counter and method Nov. 12, 2013
8575535 Sensing devices and electronic apparatuses using the same Nov. 5, 2013
8552355 Smoke sensor including a current to voltage circuit having a low frequency correction means to produce a correction current Oct. 8, 2013
RE44469 Nanoelectronic differential amplifiers and related circuits having graphene nanoribbons Sep. 3, 2013
8464855 Mailing machine having optical sensors with improved immunity to ambient Jun. 18, 2013
8450677 Methods and systems for controlling a reflectance of mirror in a vehicle May. 28, 2013
8426798 Electrical termination circuit for a traveling-wave optoelectronic device Apr. 23, 2013
8338773 High-speed analog photon counter and method Dec. 25, 2012
8304711 Vehicle rearview mirror system Nov. 6, 2012
8263927 Circuit and method for temperature and process independent transimpedance amplifier arrangement Sep. 11, 2012
8238701 Optical connector Aug. 7, 2012
8233357 Encoder capable of compensating for tilt, hard disk drive using the same, and servo track writing system for the hard disk drive Jul. 31, 2012
8227741 Photoelectric conversion device and electronic device including the same Jul. 24, 2012
8121495 Current mirror circuit and optical receiver circuit using the same Feb. 21, 2012
8106346 Photodetector Jan. 31, 2012
8106347 Vehicle rearview mirror system Jan. 31, 2012
8049156 Method and apparatus for excess signal correction in an imager Nov. 1, 2011
8013286 Nanoelectronic differential amplifiers and related circuits having graphene nanoribbons Sep. 6, 2011
7989754 Optical circuit and method for measuring monitor characteristic Aug. 2, 2011
7970291 Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus Jun. 28, 2011
7939789 Method for reproducibly determining geometrical and/or optical object characteristics May. 10, 2011
7928355 Current subtraction pixel Apr. 19, 2011
7906756 Vehicle rearview mirror system Mar. 15, 2011
7888625 Method and apparatus for producing linearized optical signals with a light-emitting transistor Feb. 15, 2011
7866903 Printer and emission intensity adjusting method Jan. 11, 2011
7858918 Molecular transistor circuits compatible with carbon nanotube sensors and transducers Dec. 28, 2010
7860678 Apparatus and method for automated adjustment and setting of APD optical receiver operation point Dec. 28, 2010
7847987 Method of compensating a zipper image by a K-value and a method of calculating a K-value Dec. 7, 2010
7838809 Nanoelectronic differential amplifiers and related circuits having carbon nanotubes, graphene nanoribbons, or other related materials Nov. 23, 2010
7792435 Control device with a switchable bandwidth Sep. 7, 2010
7763838 Photodetecting circuit having adder for photodetection Jul. 27, 2010
7728276 Vehicle rearview mirror system Jun. 1, 2010
7676152 Optical power monitor for PON telecommunication Mar. 9, 2010
7671320 Electronic device comprising a first and second photodiode wherein a reference potential is supplied to the first photodiode Mar. 2, 2010
7667177 Reading circuit, display panel and electronic system utilizing the same Feb. 23, 2010
7642501 Portable handheld artificial light detector Jan. 5, 2010
7638744 System and method for stabilizing wavelength of LED radiation in backlight module Dec. 29, 2009
7638752 Method and apparatus for correcting excess signals in an imaging system Dec. 29, 2009
7620330 Optical receiver device and method Nov. 17, 2009
7602563 System and method for focal length stabilization using active temperature control Oct. 13, 2009
7589316 Scanning beam imaging with adjustable detector sensitivity or gain Sep. 15, 2009
7557333 Optical signal receiving circuit and optical signal receiving apparatus Jul. 7, 2009
7541570 Vehicle rearview mirror system Jun. 2, 2009
7515317 Compensating a zipper image by a K-value Apr. 7, 2009

1 2 3 4 5 6

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