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8121495 |
Current mirror circuit and optical receiver circuit using the same
A current mirror circuit and an optical receiver circuit implementing with the current mirror circuit are disclosed. The current mirror circuit provides two MOSFETs and two differential amplifiers....
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8106347 |
Vehicle rearview mirror system
A vehicular interior rearview mirror system includes an interior rearview mirror assembly, which includes an ambient light sensor operable to sense ambient light and a glare light sensor operable...
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8106346 |
Photodetector
A photodetector includes a photoelectric conversion circuit that generates a first voltage by converting a first current generated in accordance with the illuminance of incident light into...
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8049156 |
Method and apparatus for excess signal correction in an imager
A method and apparatus for excess signal compensation in an imaging system is described. In one particular embodiment, the invention provides for non-linear background, offset (due to time...
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8013286 |
Nanoelectronic differential amplifiers and related circuits having graphene nanoribbons
A multiple transistor differential amplifier is implemented on a single graphene nanoribbon. Differential amplifier field effect transistors are formed on the graphene nanoribbon from a first group...
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7989754 |
Optical circuit and method for measuring monitor characteristic
An optical circuit includes a selector that supplies an output current from a first photodetector to a converter provided for a second photodetector, and a processor that imaginarily calculates the...
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7970291 |
Optical-receiving apparatus and bias-voltage-control method used for the optical-receiving apparatus
According to an optical-receiving apparatus including an APD converting input light into an electric signal and a bias-voltage-control method used for the optical-receiving apparatus, a...
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7939789 |
Method for reproducibly determining geometrical and/or optical object characteristics
A method for reproducibly determining object characteristics is disclosed. Herein an object is imaged onto a detector by means of an imaging optics and detected thereon. A correction function k is...
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7928355 |
Current subtraction pixel
A pixel for detecting at least a portion of the electromagnetic spectrum may be provided. The pixel includes a detector element for detecting at least a portion of the electromagnetic spectrum, a...
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7906756 |
Vehicle rearview mirror system
A vehicle rearview mirror system includes an electrochromic transflective reflective element, an ambient light sensor operable to sense ambient light, a glare light sensor operable to sense glare...
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7888625 |
Method and apparatus for producing linearized optical signals with a light-emitting transistor
A method for producing an optical output in substantially linear relationship with an electrical AC signal, includes the following steps: providing a light-emitting transistor having emitter, base,...
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7866903 |
Printer and emission intensity adjusting method
A printer for performing a printing operation on a printing medium, includes an optical sensor, operable to detect the printing medium; an emission intensity adjuster, operable to adjust emission...
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7860678 |
Apparatus and method for automated adjustment and setting of APD optical receiver operation point
A method for automated calibration of an avalanche photodiode receiver includes measuring two values of avalanche photodiode biases at two successive times, measuring and comparing a bit error rate...
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7858918 |
Molecular transistor circuits compatible with carbon nanotube sensors and transducers
Small-signal and other circuit design techniques realized by carbon nanotube field-effect transistors (CNFETs) to create analog electronics for analog signal handling, analog signal processing, and...
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7847987 |
Method of compensating a zipper image by a K-value and a method of calculating a K-value
A method is disclosed as including scanning a first pixel of an image with a primary scanning line of a sensor, and scanning a second pixel of the image with a secondary scanning line of the...
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7838809 |
Nanoelectronic differential amplifiers and related circuits having carbon nanotubes, graphene nanoribbons, or other related materials
Small-signal and other circuit design techniques realized by carbon nanotube field-effect transistors (CNFETs) to create analog electronics for analog signal handling, analog signal processing, and...
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7792435 |
Control device with a switchable bandwidth
A control device with a switchable bandwidth including: an integrating element with a first capacitance, which is charged and discharged by at least one current; at least one second capacitance,...
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7763838 |
Photodetecting circuit having adder for photodetection
A photodetecting circuit includes an adder that selectively adds outputs of a plurality of circuits for photodetection. Each of the circuits for photodetection includes: a element for...
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7728276 |
Vehicle rearview mirror system
A vehicle rearview mirror system includes a transflective reflective element, an ambient light sensor that senses ambient light and a glare light sensor that senses glare light. A control circuit...
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7676152 |
Optical power monitor for PON telecommunication
In an optical telecommunication system in which an intensity of an arriving optical signal is different for each packet, detected is an optical intensity for each packet with little error. For this...
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7671320 |
Electronic device comprising a first and second photodiode wherein a reference potential is supplied to the first photodiode
The semiconductor device includes a first photodiode, a second photodiode which is shielded from light, a first circuit group including a voltage follower circuit, a second circuit group, and a...
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7667177 |
Reading circuit, display panel and electronic system utilizing the same
A reading circuit including a detection module, a first transistor, and a compensation module is disclosed. The detection module detects a light. The first transistor transforms the detection...
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7638744 |
System and method for stabilizing wavelength of LED radiation in backlight module
The system for stabilizing wavelength of LED (light emitting diode) radiation in backlight module of the LCD (liquid crystal display) comprises two photodiodes, a plurality of LEDs, a...
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7638752 |
Method and apparatus for correcting excess signals in an imaging system
A method and apparatus for excess signal compensation in an imaging system is described. In one particular embodiment, the invention provides for non-linear background, offset (due to time...
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7620330 |
Optical receiver device and method
An optoelectronic device has a bright detector and a dark detector and reduces noise in the output of the bright detector using the output of the dark detector.
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7589316 |
Scanning beam imaging with adjustable detector sensitivity or gain
A scanning beam assembly comprising: a beam generator to generate a beam of radiation, an oscillating reflector configured to deflect the beam at varying angles of excursion to yield a scanned beam...
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7557333 |
Optical signal receiving circuit and optical signal receiving apparatus
An optical signal receiving circuit has a current-voltage converting circuit which receives the output current signal of a photoelectric converting circuit, converting an optical signal into the...
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7541570 |
Vehicle rearview mirror system
A vehicle rearview mirror system includes a variable reflectance reflective element, an ambient light sensor that is operable to sense ambient light, and a glare light sensor that is operable to...
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7515317 |
Compensating a zipper image by a K-value
A method of compensating a zipper image by a K-value, and a method of calculating the K-value. Whether the nth primitive pixel of the mth line is obtained by primary line scan is determined. If the...
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7509052 |
Optical receiver, optical transmitter and optical transceiver
An optical receiver includes a first light receiving element to convert an optical signal to an electric signal and to output the electric signal from one end. A light receiving element row is...
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7495203 |
In-situ power monitor providing an extended range for monitoring input optical power incident on avalanche photodiodes
Disclosed are an in-line monitoring apparatus, an optical receiver and a method for monitoring an input power of an optical signal in which one or more power monitoring stages, for example can...
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7470886 |
Light receiving circuit, semiconductor laser device, and optical pickup device
There is provided a light receiving circuit capable of preventing an output variation of the light receiving circuit due to a change in ambient temperature with a simple configuration. The light...
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7462813 |
Semiconductor device and method with a light shielded second photodiode connected to a voltage regulator circuit
The semiconductor device includes a first photodiode, a second photodiode which is shielded from light, a first circuit group including a voltage follower circuit, a second circuit group, and a...
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7460788 |
Transmitting and receiving device
A transmitting and receiving device, in which the received signal which is produced by the receiving device has only a small amount of crosstalk. This object is achieved by providing a transmitting...
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7453057 |
Vehicle rearview mirror system having a variable reflectance control
A vehicle rearview mirror system includes an electro-optic reflective element, an ambient light sensor that is operable to sense ambient light, a glare light sensor that is operable to sense glare...
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7439533 |
Optical module and optical communication device
An optical module includes a light emitting element, a connector part that supports one end of an optical fiber and optically couples the optical fiber to the light emitting element, and a...
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7439481 |
In-situ power monitor having an extended range to stabilize gain of avalanche photodiodes across temperature variations
Disclosed are an in-line monitoring apparatus with a temperature compensator, an optical receiver and a method for stabilizing gain of an avalanche photodiode (“APD”) over an extended range of inp...
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7423522 |
Tire pressure alert system
A tire pressure alert system suitable for use in a vehicle includes a vehicular tire pressure monitoring system and a telematic system of the vehicle. The telematic system of the vehicle is...
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7421213 |
Optical receiver control device with a switchable bandwidth
A control device with a switchable bandwidth including: an integrating element with a first capacitance, which is charged and discharged by at least one current; at least one second capacitance,...
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7418213 |
Transimpedance amplifier with integrated filtering and reduced parasitic capacitance
A transimpedance amplifier (TIA) with integrated filtering. A capacitance is integrated into the TIA and connected to the power supply and to an internal ground of the TIA. Noise on the power...
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7406268 |
Optical receiver circuit
An optical receiver circuit is constructed to be immune to interference from external interference signals. The optical receiver circuit includes a differential amplifier having an optical...
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7381939 |
Optical cargo detection
A detector for detecting cargo in a container has a controller block, a transmitter for transmitting light into the field of view, a receiver for receiving reflected light, and a threshold...
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7355159 |
Image scanner and method for detecting a defect in an image to be scanned
Image data in an image scanner is examined to determine whether lines (light or dark) are present in the image data. By examining whether the lines are present in image data for multiple colors,...
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7339152 |
Delay circuit and test apparatus
A delay circuit for delaying an input signal with a desired delay and outputting the delayed signal. The delay circuit includes a light emitting element for emitting light according to an input...
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7332702 |
Optical receiver and a method for manufacturing the same
This invention provides an optical receiver, a temperature dependence of which is compensated, and a method for manufacturing the optical receiver. The optical receiver according to the present...
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7326921 |
Optical receiver with bias voltage adjusted according to adjustable bypass current
The present invention is to provide an optical receiver by which the avalanche photodiode (APD) can be protected from the self-breakdown when the signal light with excess power enters therein. The...
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7326947 |
Current transfer ratio temperature coefficient compensation method and apparatus
An optocoupler system includes a buffer, isolation, and a detector. The system includes a current transfer ratio (CTR) with a temperature coefficient. The buffer includes a light source that...
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7327458 |
Spectral sensitivity composing system
An output current from each pixel sensor can be extracted at an arbitrary ratio by a current divider. An arithmetic control unit sets the dividing ratio in correspondence to a color matching...
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7309852 |
Variable noise control for an optical transducer
In one embodiment, an optical transducer, such as an infrared transducer, generates an output signal that is representative of optical irradiance. A noise control circuit is coupled in a power...
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7276682 |
Laser power control with automatic compensation
A method and apparatus is disclosed for optic signal power control to maintain a desired or optimum optic signal power level. During start-up, a default or target value from memory may be utilized...
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