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

Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
8692919 Photo-sensor, measurement apparatus and camera system Apr. 8, 2014
8688392 System and method for testing a light sensor of a portable electronic device Apr. 1, 2014
8674285 Vehicle rearview mirror system Mar. 18, 2014
8592744 Indoor/outdoor detection Nov. 26, 2013
8575971 Current mirror and current cancellation circuit Nov. 5, 2013
8575535 Sensing devices and electronic apparatuses using the same Nov. 5, 2013
8536505 Movable illuminance sensors for fixture light sources Sep. 17, 2013
8536507 Integrated proximity sensor and light sensor Sep. 17, 2013
8497461 Light sensor circuit and driving method thereof Jul. 30, 2013
8492699 Photodetectors useful as ambient light sensors having an optical filter rejecting a portion of infrared light Jul. 23, 2013
8487233 Vision equipment comprising an optical strip with a controlled coefficient of light transmission Jul. 16, 2013
8461510 Occupancy sensor and ambient light control Jun. 11, 2013
8450677 Methods and systems for controlling a reflectance of mirror in a vehicle May. 28, 2013
8441195 Illumination adjustment circuit May. 14, 2013
8431882 Light-receiving circuit and semiconductor device having same Apr. 30, 2013
8384443 Current mirror and current cancellation circuit Feb. 26, 2013
8384003 Display device control based on integrated ambient light detection and lighting source characteristics Feb. 26, 2013
8354629 Computer keyboard having illuminated keys with a sensed light condition Jan. 15, 2013
8344313 Optical input type touch system and feedback control method thereof Jan. 1, 2013
8337628 Non-integrated bulk dispenser and method of operating a dishwasher having same Dec. 25, 2012
8330945 Multi-purpose plasmonic ambient light sensor and visual range proximity sensor Dec. 11, 2012
8309901 Display device adjusting luminance of display based at least on detections by ambient light sensors Nov. 13, 2012
8309900 Combined active and passive imaging system with radiation source unit and detector Nov. 13, 2012
8304711 Vehicle rearview mirror system Nov. 6, 2012
8299415 Photodetector, electro-optical device, and electronic apparatus Oct. 30, 2012
8258453 Long range proximity and/or motion detector with ambient light detection capabilities Sep. 4, 2012
8242430 Apparatuses and methods that reduce mismatch errors associated with analog subtractions used for light sensing Aug. 14, 2012
8227731 Closed loop daylight harvesting light control system having auto-calibration Jul. 24, 2012
8227735 Combined active and passive imaging system with radiation source unit and detector Jul. 24, 2012
8197093 System providing automatic and manual control of an illumination level in a space Jun. 12, 2012
8193478 Light sensor test unit, method of testing light sensor using the same and display apparatus Jun. 5, 2012
8158922 Method and apparatus for a light fixture having a security light and permanently mounted wall-washing LEDs Apr. 17, 2012
8143567 Ambient light control system Mar. 27, 2012
8138463 Photosensor and ambient light sensor with constant bias voltage Mar. 20, 2012
8115185 System and/or method for reading, measuring and/or controlling intensity of light emitted from an LED Feb. 14, 2012
8106345 Photo sensor and flat panel display using the same Jan. 31, 2012
8106347 Vehicle rearview mirror system Jan. 31, 2012
8076628 Ambient light sensor with reduced sensitivity to noise from infrared sources Dec. 13, 2011
8017896 Vehicle accessory having a rear light receiving sensor for measuring illumination intensity inside the vehicle Sep. 13, 2011
8008613 Light sensing device having a color sensor and a clear sensor for infrared rejection Aug. 30, 2011
8008611 Photo sensor and flat panel display using the same Aug. 30, 2011
8003930 Ambient light sensor Aug. 23, 2011
7968835 Electronic device having LED with variable brightness Jun. 28, 2011
7960682 Display device control based on integrated ambient light detection and lighting source characteristics Jun. 14, 2011
7960807 Ambient light detectors using conventional CMOS image sensor process Jun. 14, 2011
7936346 Liquid crystal display device implementing photodetector to control backlight May. 3, 2011
7936427 Optical sensor for detecting peripheral light and liquid crystal display device using the same May. 3, 2011
7906756 Vehicle rearview mirror system Mar. 15, 2011
7902491 Device for regulating the backlighting of an LC display Mar. 8, 2011
7893932 Electronic circuit, electro-optical device, and electronic apparatus including the same Feb. 22, 2011

1 2 3 4 5 6 7

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