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8173947 |
Scanning mirror position determination
A scanning projector includes a mirror that scans in two dimensions, at least one of which is sinusoidal. A position sensor provides a position signal that represents an angular displacement of the...
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8160457 |
PIN/TIA system for use in FTTx applications
A system is disclosed for an improved ROSA that has increased sensitivity for permitting greater numbers of ONTs to be connected to an optical network per defined transmission line distances. The...
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8154480 |
Photoelectric conversion device and electronic device having the same
A plurality of transistors in which ratios of a channel length L to a channel width W, α=W/L, are different from each other is provided in parallel as output side transistors 105a to 105c in a ...
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8153953 |
Light receiving circuit
A light receiving circuit includes: a transimpedance amplifier circuit which is connected to a light receiving element; a differential amplifier which operates by a predetermined current supplied...
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8153954 |
Photoelectric conversion device and electronic device having the same
To output a digital signal corresponding to illuminance without being adversely affected by circuit delay. A photoelectric conversion device includes a photoelectric conversion element; a ramp-wave...
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8150272 |
Systems and methods for transferring single-ended burst signal onto differential lines, especially for use in burst-mode receiver
Systems and methods for transferring incoming single-ended burst signals of which at least one characteristic varies widely from burst to burst onto a pair of differential lines. The systems...
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8143564 |
Photodetection circuit
This photodetecting circuit 1 is capable of suppressing oscillation of an output, and operates as a zero bias circuit in a case of a small photoelectric current to an extent that a dark current is...
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8139957 |
High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit
An optical receiver includes a light receiving element for converting an optical signal to an electrical signal having a first bandwidth and an amplifier for amplifying the electrical signal. The...
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8134114 |
Direct attach optical receiver module and method of testing
A direct attach optical receiver module and a system and method for testing the direct attach optical receiver module are provided. An optical receiver module may include an optical detector and an...
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8129672 |
Photosensor device with dark current cancellation
A photosensor device with dark current cancellation is disclosed. The photosensor device comprises a first and second photosensors, a first and second current replication circuits and a digital...
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8129671 |
Power supply dependent optical receiver and amplifier and photocoupler using the same
In an optical receiver and amplifier and an optical coupler, a technique for stabilize operations at turning on/off of a power supply by a simple configuration is desired. An optical receiver and...
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8124924 |
Photoelectric conversion device and electronic device provided with the photoelectric conversion device
An output terminal of a photoelectric conversion element included in the photoelectric conversion device is connected to a drain terminal and a gate terminal of a MOS transistor which is...
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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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8119973 |
Light receiving circuit
A light receiving circuit in accordance with an exemplary aspect of the present invention includes a photodiode 6 that converts an optical input signal into a current signal, and an I-V conversion...
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8115152 |
Method of operating a photoconductor in an imaging system, and read-out circuit employing an AC-biased photoconductor
A photoconductor read out circuit includes a biasing signal generator connected to apply an alternating current biasing signal to a first terminal of the photoconductor. An input capacitance...
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8110788 |
Method and device for detecting weak optical signals
An optical detection device is disclosed. The device comprises a photoelectric unit, configured to sense incoming photons and to produce electrical signals pertaining to at least a few of the...
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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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8084727 |
Device for detecting an electromagnetic radiation with current limitation
This device for detecting an electromagnetic radiation, comprises a matrix of juxtaposed elementary sensors (1), each associated with a common substrate in which a sequential addressing read...
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8067720 |
Image sensing device and imaging system
An image sensing device includes a pixel array, a plurality of column amplification units each including a setting unit, and a plurality of reference signal supply units. A first reference signal...
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8055138 |
Photosensor operating point
The subject matter disclosed herein relates to determining a photosensor operating point.
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8049157 |
Semiconductor device
The present invention provides a photoelectric conversion device capable of detecting light from weak light to strong light and relates to a photoelectric conversion device having a photodiode...
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8039785 |
LED array having array-based LED detectors
The present invention provides an optical system having an array of light emitting semiconductor devices to performing an operation that have multiple characteristics associated with performing the...
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8035071 |
Contamination-inspecting apparatus and detection circuit
The detection part has: a subtraction module for calculating correction data from data of detection systems when a reference-voltage generation module applies a reference voltage to the detection...
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8035073 |
Switched capacitor input stage for imaging front-ends
Embodiments of the present invention provide an apparatus and control method for an analog front end (AFE) amplifier for controlling DC restore operations. According to the exemplary method, a...
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8035072 |
Optical semiconductor device and infrared data communication apparatus eliminating low frequency component
An optical semiconductor device and an infrared data communication apparatus eliminating a direct current component and a low frequency component included in a light signal. The optical...
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8035070 |
Imaging apparatus and device
An imaging apparatus capable of suppressing deterioration of image qualities and output properties is provided having one or more output circuits in series and a buffer circuit 6, and processing...
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8030609 |
Read circuit, variable resistive element device, and imaging device
A read circuit includes: an integration circuit section configured to perform an integral operation and whose input is connected to an integration node; and a bias circuit connected between a...
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8030606 |
Pixel with differential readout
An imager in which two adjacent pixels share row and reset lines and a row selection circuitry while the output transistors of the two pixels are configured as a differential amplifier. In...
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8017901 |
Photodetector
A photodetecting device 1 includes a photodiode PDm,n, a switch SWm,n for the photodiode, an integrating circuit 12m, and a noise removing circuit 13m. The integrating circuit 12m accumulates in a...
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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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8003930 |
Ambient light sensor
In an ambient light sensor according to the present invention, a current amplification portion which amplifies a light current obtained by a light receiving portion to generate an output signal...
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7989753 |
Photodetector having wide dynamic range and low temperature dependence
A photodetector of a wide dynamic range of incident light amount detection and low temperature dependence is provided. A first signal processing unit 10m,n includes an integrating circuit 11, a...
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7977618 |
Testing of transimpedance amplifiers
Testing is performed on an amplifier wafer housing a transimpedance amplifier prior to packaging the transimpedance amplifier with an external photodetector, wherein the transimpedance amplifier...
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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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7961053 |
Integrated circuit having a dummy transimpedance amplifier
Consistent with the present disclosure, a “dummy” transimpedance amplifier (dummy TIA) is provided on a substrate along with one or more other transimpedance amplifiers (TIAs) that are con...
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7956314 |
Microwave switching element
In some embodiments, a microwave switch element may include one or more of the following features: (a) an electrically isolated input capable of receiving an input, (b) an amplifier electrically...
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7952427 |
Signal amplifier circuit and optical receiver
A signal amplifier circuit includes peak value holding circuit 11 receiving positive-phase input signal, peak value holding circuit 12 receiving negative-phase input signal, adder 13 adding the...
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7947940 |
Photoelectric current integrating circuit including a current passing circuit
A photoelectric current integrating circuit including: a first operational amplifier with a switch and an integrating capacitor connected in parallel between an input terminal and an output...
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7939790 |
Method and apparatus for controlling the gain of an avalanche photodiode with fluctuations in temperature
A method and apparatus is provided for biasing an avalanche photodiodes (APD). The method includes developing a first output signal s(v1) from the APD when biased with a first bias voltage v1 and...
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7910874 |
Method of amplifying charge in an imager
A charge coupled device (CCD) includes a low noise charge gain circuit that amplifies charge of a cell dependent upon the charge accumulated by the cell. The low noise charge gain circuit receives...
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7912383 |
Configurable post-amplifiers that are capable of being configured to perform either substantially linear or limiting amplification for use in optical receivers
Configurable amplifiers for optical receivers and transceivers are disclosed. In one aspect, a configurable amplifier may be coupled with an output of a current-to-voltage converter to receive a...
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7911278 |
Biased low differential input impedance current receiver/converter device and method for low noise readout from voltage-controlled detectors
A first stage electronic system for receiving charge or current from voltage-controlled sensors or detectors that includes a low input impedance current receiver/converter device (for example, a...
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7898331 |
Increasing the common mode range of a circuit
Increasing the input common-mode range of a circuit which accepts differential signals as inputs. Such an increase may be attained by correcting an input signal at continuous levels or at 2 or more...
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7899339 |
High-sensitivity, high-resolution detector devices and arrays
Avalanche amplification structures including electrodes, an avalanche region, a quantifier, an integrator, a governor, and a substrate arranged to detect a weak signal composed of as few as several...
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7875842 |
Solid state image pickup element and camera system
A solid state image pickup element includes a pixel unit having a plurality of pixels for photoelectric conversion disposed in a matrix shape and a pixel signal read circuit for reading pixel...
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7868701 |
Transimpedance amplifier
A gain switching determination circuit (250) compares/determines a comparative input voltage (Vc) from an inter-stage buffer (230) with a first hysteresis characteristic, and outputs a gain...
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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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7851738 |
Driver circuit, related drive control method and image reading apparatus
A driver circuit provided with a shift signal generator for sequentially outputting shift signals at a predetermined time interval; a plurality of amplifiers respectively receiving a plurality of...
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7847230 |
Radiation detector for detecting low-intensity radiation by means of avalanche amplification
The invention relates to a radiation detector (1) for detecting low-intensity radiation, especially for detecting individual photons. The radiation detector includes a plurality of rows of image...
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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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