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


Sub-classes under this class:

Class Number Class Name Patents
250/214B Ambient light desensitizing means 160
250/214AL Ambient light responsive 220
250/214A Amplifier type 596
250/214AG Automatic gain control 210
250/214C Compensation 212
250/214DC Digital circuitry 43
250/214SW Electronic switch 60
250/214D Light dimmers 17
250/214L Logarithmic/linear signal 49
250/214P Photographic control 74
250/214PR Photosensitive rheostat type 80
250/214RC Rate of change 42
250/214SG Self-generating type 41
250/214SF Slave flash 9
250/214.1 Special photocell 837


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Patent Number Title Of Patent Date Issued
7459667 Active pixel image sensor with common gate amplifier mode Dec. 2, 2008
7460788 Transmitting and receiving device Dec. 2, 2008
7460792 Receiving circuit and electronic apparatus for optical communication Dec. 2, 2008
7453053 Optical output controller with control based upon an output current of parallel current controlling elements Nov. 18, 2008
7453057 Vehicle rearview mirror system having a variable reflectance control Nov. 18, 2008
7449707 Optical coupling device and electronic apparatus using same that transmits a signal with two light emitting elements and one or two light receiving elements Nov. 11, 2008
7449669 Receiving apparatus Nov. 11, 2008
7449672 Conversion of quantum information from one photonic representation to another photonic representation Nov. 11, 2008
7446297 Sensor and method for providing high transfer rate in page-based optical data storage Nov. 4, 2008
7446294 True color image by modified microlens array Nov. 4, 2008
7442911 Photodector including photodiodes having improved dynamic range, s/n ratio and speed of light detection Oct. 28, 2008
7442912 Optical logic device responsive to pulsed signals Oct. 28, 2008
7442915 Signal conditioning circuitry Oct. 28, 2008
7439532 Solid state relay, electronic device, and method for manufacturing solid state relays having a first control terminal, a first output terminal and a second output terminal as lead terminals Oct. 21, 2008
7439480 Regulated current mirror Oct. 21, 2008
7439482 Automatic avalanche photodiode bias setting system based on unity-gain noise measurement Oct. 21, 2008
7439485 Multimode optical transmission apparatus and multimode optical transmission system Oct. 21, 2008
7436342 Numerical full well capacity extension for photo sensors with an integration capacitor in the readout circuit using two and four phase charge subtraction Oct. 14, 2008
7435938 Optical packet communication device with an applied negative voltage for canceling an offset voltage Oct. 14, 2008
7435937 Photodetection apparatus with operation-mode switching between current output mode and voltage output mode Oct. 14, 2008
7435935 Semiconductor image pickup device with dual current generation circuit capable of sensing light over wider range Oct. 14, 2008
7433606 Photodiode bias controller for optical receiver Oct. 7, 2008
7429726 Image displaying and capturing devices Sep. 30, 2008
7427737 Pixel with differential readout Sep. 23, 2008
7427734 Multiple photosensor pixel Sep. 23, 2008
7427739 Electro-optical device and electronic apparatus Sep. 23, 2008
7427741 Bias control apparatus for avalanche photodiode and optical apparatus utilizing the bias control apparatus Sep. 23, 2008
7423255 System and methods for dynamic range extension using variable length integration time sampling Sep. 9, 2008
7423259 Mass spectrometer and method for enhancing dynamic range Sep. 9, 2008
7423254 High responsivity high bandwidth metal-semiconductor-metal optoelectronic device Sep. 9, 2008
7423252 Slow tail compensation Sep. 9, 2008
7423251 System and methods for dynamic range extension using variable length integration time sampling Sep. 9, 2008
7420148 Method and device for determining a pixel gray scale value image Sep. 2, 2008
7420154 Pixel circuit with non-destructive readout circuit and methods of operation thereof Sep. 2, 2008
7414233 Pixel circuit with surface doped region between multiple transfer transistors and image sensor including the same Aug. 19, 2008
7414234 Measurement of burst mode optical power over multiple bursts Aug. 19, 2008
7414386 Methods for testing optical transmitter components Aug. 19, 2008
7411187 Ion trap in a semiconductor chip Aug. 12, 2008
7411179 Photodetector module with impedance matching Aug. 12, 2008
7411172 Method and apparatus for resetting a high speed latch circuit Aug. 12, 2008
7411171 Circuit for analyzing a signal reflected from an object Aug. 12, 2008
7408139 Video image capture device Aug. 5, 2008
7408140 Pixel with spatially varying metal route positions Aug. 5, 2008
7408143 Previous amplifier circuit, light-receiving amplifier circuit, and optical pickup apparatus having grounded emitter amplifier circuits each with a grounded emitter transistor Aug. 5, 2008
7405386 Light receiving device for reading an optical medium with reducing influence of dark current and stray light performance Jul. 29, 2008
7402789 Methods for pixel binning in an image sensor Jul. 22, 2008
7402788 Detector diodes with bias control loop Jul. 22, 2008
7400735 Wave-filtering device with an adjustable frequency bandwidth Jul. 15, 2008
7399951 Solid-state image-sensing device Jul. 15, 2008
7399952 Image processing apparatus and image capturing apparatus Jul. 15, 2008

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


 
 
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