|
Match
|
Document |
Document Title |
|
|
7605359 |
Light source frequency detection circuit for image sensor
An apparatus for measuring the power frequency of a light source includes a photo-sensor, a modulator, and a logic unit. The photo-sensor generates an electrical signal that is responsive to light...
|
|
|
7579578 |
Advanced multipurpose pseudospark switch having a hollow cathode with a planar spiral electrode and an aperture
The present invention provides a pseudospark switch that overcomes the aforementioned limitations of existing pseudospark switches and proved e-beams for applications such as FELs, pulsed lasers,...
|
|
|
7566859 |
Infrared ray switching device
An IR switching device, electrically connected to an apparatus, is provided. The IR switching device comprises an IR transmitter, an IR receiver, a processor, a controller. The IR transmitter is...
|
|
|
7531784 |
Semiconductor device and electronic appliance using the same
An object is to provide a photoelectric conversion device capable of detecting a wider range of illuminance without expansion of a range of an output voltage or output current. The photoelectric...
|
|
|
7501611 |
Photo detector apparatus
The present invention relates to a photodetector having a structure capable of increasing the dynamic range and of improving the S/N ratio for light detection. The photodetector includes a pixel...
|
|
|
7476840 |
Sensing light and sensing the state of a memory cell an aid of a switch controlled by a schmidt trigger
A light-to-frequency converter includes a switch ( 130 ) connected in series with a reverse-biased photodiode ( 120 ). A node ( 150 ) in the current path through the switch and the photodiode is...
|
|
|
7470885 |
Photodetector-amplifier circuit and optical pickup device
The present invention provides a photodetector-amplifier circuit capable of eliminating an influence of noise due to stray light entering a non-selected photodetector to stably select and switch a...
|
|
|
7462812 |
Optical switch apparatus and optical switching system
An optical switching system having a transmission node. The transmission node includes a bit pattern processing unit for processing a bit pattern of transmitted data to stabilize optical power of a...
|
|
|
7411172 |
Method and apparatus for resetting a high speed latch circuit
A latch circuit includes first and second resonant tunneling diodes coupled in series, and a reset portion having a photodiode portion responsive to varying photonic energy for switching between...
|
|
|
7408141 |
Light-receiving amplifier circuit and optical pick-up device using the same
The present invention provides a light-receiving amplifier circuit which includes a clipping circuit, can prevent an oscillation at the time of clipping operation, and can freely set clipping...
|
|
|
7406018 |
Signal generating circuit and optical pickup device provided therewith
A signal generating circuit of the invention includes a current polarity switch circuit that receives an output current of a light-sensitive element and outputs a current of which the direction the...
|
|
|
7391408 |
Adjustable apparatus in display devices for automatic adjusting brightness
An adjustable brightness apparatus includes a light detection unit and a modulation and can automatically adjust the backlight current of a display device based on variable ambient light outside...
|
|
|
7388186 |
Optically controlled MEMS devices
An optically controlled mechanical device actuated by electrostatic forces. The device includes electrostatic plates disposed on opposing portions of the device to accumulate charge; conductors to...
|
|
|
7345270 |
Photocontrol with radio-controlled timer and a decoder
A photocontrol controls the activation of lighting based on ambient light and the time of day using a radio-controlled timer. Radio signals from a particular source of correct time, such as the...
|
|
|
7319221 |
Light-receiving device, optical pickup, and optical disc apparatus
A signal-detecting light-receiving device formed as an integrated circuit, which receives a light beam reflected from an optical recording medium, and which outputs a signal obtained from the...
|
|
|
7167655 |
Measurement system for wide dynamic range optical power meter
A measurement system for wide dynamic range operation in optical power measurement applications is disclosed. The system provides amplification over a wide dynamic range without glitch, signal loss...
|
|
|
7129463 |
Photocurrent sensing circuit having stabilized feedback loop
A photocurrent sensing circuit having a stabilized feedback loop comprises a photocurrent generator including a photodiode generating the photocurrent in proportion to an amount of incident light...
|
|
|
7098438 |
Method and apparatus for resetting a high speed latch circuit
A latch circuit includes first and second resonant tunneling diodes coupled in series, and a reset portion having a photodiode portion responsive to varying photonic energy for switching between...
|
|
|
7091467 |
Image sensor
An image sensor has light receiving elements, switching elements for reading out output signals from the light receiving elements, a scanning circuit array for driving the switching elements, and a...
|
|
|
6984815 |
Electronic pulse detection apparatus and electronic pulse detection chip
An electronic pulse detection device includes: an MCP in which a plurality of capillaries configured to increase the number of electrons are arranged in matrix; and an electronic pulse reading chip...
|
|
|
6895190 |
Switchable bandwidth lowpass filter
A novel transceiver is provided which allow for either a transmitter or receiver to be dynamically switched between two different frequency bands by use of a novel switchable lowpass filter.
|
|
|
6815658 |
Testing circuit for charge detection circuit, LSI, image sensor, and testing method for the charge detection circuit
A testing circuit 1 , provided between an input terminal IN of an LSI 2 and the CSA 20 , includes a switch NSW (a third switch), a capacitor CT which is connected in parallel to the switch NSW,...
|
|
|
6815655 |
Method and apparatus for sequencing power in a photodetector circuit
A circuit for use with a photodetector includes multiple switches, a comparator, and a capacitor. The photodetector receives a first voltage and a second voltage at first and second nodes,...
|
|
|
6809308 |
Photodetector and photodetecting system capable of detecting information about the two-dimensional intensity distribution and wavelength distribution of incident light
A photodetector which has the function of measuring the intensity distribution of light with a simple and inexpensive construction and which has a selectivity for a measured wavelength band. The...
|
|
|
6803559 |
Optically controlled MEM switches
An optically controlled micro-electromechanical (MEM) switch is described which desirably utilizes photoconductive properties of a semiconductive substrate upon which MEM switches are fabricated....
|
|
|
6777665 |
High frequency optical signal sampling device
An apparatus for converting an input optical signal to an electrical signal. The input optical signal is characterized by a modulation frequency and a modulation wavelength. The apparatus includes...
|
|
|
6765189 |
Small form factor in-line switched multichannel fiber optic power monitoring apparatus
A switched multichannel fiber optic power monitoring apparatus, includes a plurality of photodetectors, each connected to a tap of a different optical line for converting an optical signal...
|
|
|
6765188 |
Method and apparatus for converting the output of a photodetector to log voltage
In a video receiver, a photodiode is terminated with one or more junction diodes to provide an output voltage that is a log function of the incident optical power. The termination with the diode...
|
|
|
6756577 |
Light detector and light detecting IC therefor
A light detecting IC has a single light receiving element, a first signal processing circuit for processing signals outputted from this light receiving element, a pair of input terminals for...
|
|
|
6740807 |
Light-receiving device and image sensor
A differential response light-receiving device comprising: a semiconductor electrode comprising an electrically conductive layer and a photosensitive layer containing a semiconductor sensitized by...
|
|
|
6707025 |
High dynamic range receiver
A high dynamic range receiver includes a detector that produces a current at a pair of terminals. A first gain element, implemented as a current-to-voltage converter for example, is coupled to the...
|
|
|
6696680 |
Variable resistance circuit, operational amplification circuit and semiconductor integrated circuit
A variable resistance circuit comprises a resistance circuit including a plurality of resistors serially connected, and a bypass circuit connected in parallel with the resistance circuit for...
|
|
|
6646250 |
Method and system for information transfer and replication between spatially distinct points via engineered quantum states
A system and method for transferring information between spatially distinct points by modulating quantum states operatively coupling at least one transmitter and at least one receiver. In the...
|
|
|
6600146 |
Photoelectric switches
A photoelectric switch emits pulsed detection light and outputs a light detection signal as reflected light is received. For generating an on-off judgment output for switching on and off, the level...
|
|
|
6593564 |
Photo switching device having a control circuit with a gate controlled device
A photo switching device includes first and second terminals respectively coupled to a power source and a load. A bi-directional current routing circuit including a rectifying bridge is connected...
|
|
|
6501064 |
Image sensor with active sensor elements
An image pick-up includes a number of active sensor elements ( 11; 12; 13; 14 ) arranged in an array and a number of conductive lines extending over the surface of the array for the transfer of...
|
|
|
6486945 |
Method and circuit arrangement for measuring the light output of an emitter diode of an optical monitoring unit
An optical monitoring unit includes a transmitting unit having plural light emitting diodes that are connected together two at a time in respective diode pairs. Each diode of each diode pair is...
|
|
|
6350979 |
CMOS image sensor with high quantum efficiency
An image sensor integrated circuit with a pixel cell having photogates wherein each photogate has a number of gaps which allow light to penetrate to the substrate. The gaps are open in the...
|
|
|
6300614 |
Communication system using gravitational waves
A method and apparatus for communication using gravitational waves is disclosed. The system utilizes a resonant frequency set up between identical masses to transmit information. The communication...
|
|
|
6263124 |
Photoconductive switch
A photoconductive switch comprises a first layer (1), two contact layers (2, 3) arranged on said first layer and connectable to different potentials for applying a voltage thereacross, said first...
|
|
|
6252221 |
Photo-conductive switch having an improved semiconductor structure
A PCS that comprises a photo-conductive layer of NB material sandwiched between a top confinement layer and a bottom confinement layer. Both confinement layers are layers of WB material. NB...
|
|
|
6248992 |
High gain photoconductive semiconductor switch having tailored doping profile zones
A photoconductive semiconductor switch with tailored doping profile zones beneath and extending laterally from the electrical contacts to the device. The zones are of sufficient depth and lateral...
|
|
|
6246044 |
Switched electrical pulse propagation sampler
A sampler adapted for the measurement of ultra-short electrical pulses of a very broad spectrum. The sampler has an electrical pulse propagation structure (i.e., propagation line) made up of a...
|
|
|
6201234 |
Optical operational amplifier
An optical operational amplifier is disclosed. The operational amplifier has a first photodiode with an anode and a cathode. A second photodiode with an anode coupled to the cathode of the first...
|
|
|
6194699 |
Photoconductive switch with multiple layers
A photoconductive switch comprises a first layer (1) of a first material sandwiches between two contact layers (2,3). The first layer is adapted to be conducting upon applying a voltage across said...
|
|
|
6128110 |
Apparatus for optical signal processing
A programmable optical logic gate for performing a selected function from the group including ALWAYS, NEVER, and logical OR, AND, NAND, NOR, XNOR, and XOR includes an optical logic circuit for...
|
|
|
6078111 |
Photovoltaic optoelectronic switch
An optoelectronic switch for switching an input signal comprises two PIN des connected in series with opposed polarity, an input signal choke connected to the PIN diodes for presenting a high...
|
|
|
6075251 |
Optical transmitter data compression system
The present invention relates to a transmission method and device for efficient compression of digital data. The invention uses an optoelectronic coupler to receive light signals from a light...
|
|
|
6069365 |
Optical processor based imaging system
An image processing system for capturing and compressing images into a digital format is disclosed. The system has an array of imaging pixel elements which consist of two photodiode detectors. One...
|
|
|
6028301 |
Method for controlling a micro electro-mechanical systems and verifying the state thereof using light
The present invention discloses a method for controlling a micro electro-mechanical system manufactured using micro-machining technology and verifying the state thereof and, more particularly, to a...
|