| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 250551000 | Signal isolator | 36 |
| 20100006784 | METHOD AND SYSTEM FOR A LIGHT SOURCE ASSEMBLY SUPPORTING DIRECT COUPLING TO AN INTEGRATED CIRCUIT - Methods and systems for a light source assembly supporting direct coupling to a photonically enabled complementary metal-oxide semiconductor (CMOS) chip are disclosed. The assembly may include a laser, a microlens, a turning mirror, reciprocal and/or non-reciprocal polarization rotators, and an optical bench. The laser may generate an optical signal that may be focused utilizing the microlens. The optical signal may be reflected at an angle defined by the turning mirror, and may be transmitted out of the light source assembly to one or more grating couplers in the chip. The laser may include a feedback insensitive laser. The light source assembly may include two electro-thermal interfaces between the optical bench, the laser, and a lid affixed to the optical bench. The turning mirror may be integrated in a lid affixed to the optical bench or may be integrated in the optical bench. | 01-14-2010 |
| 20100006783 | LIGHT EMITTING DIODE DISPLAY DEVICE - The present disclosure relates to a light emitting diode display device which can prevent a drive switching device from degrading. The light emitting diode display device includes a plurality of pixel cells each having a light emitting diode, a plurality of data lines for transmission of data signal having information on a picture, a plurality of gate lines for transmission of a gate signal having a gate high voltage, a first gate low voltage, and a second gate low voltage having a polarity opposite to the data signal, wherein the gate high voltage, the first gate low voltage and the second gate low voltage having potentials different from one another wherein each of the pixel cells includes a signal transmission switching device for connecting the data line to a node according to the first gate high voltage from the gate line, a drive switching device for controlling an intensity of a drive current being supplied to the light emitting diode according to a signal state of the node, a storage capacitor connected between the node and a source electrode or a drain electrode of the drive switching device, and a control switching device for connecting the gate line to the node in response to the second gate low voltage from the gate line and a control signal from a control line. | 01-14-2010 |
| 20120223259 | OPTICAL COUPLING ELEMENT AND METHOD FOR MANUFACTURING THE SAME - An optical coupling element includes a light emitting element and a light receiving element which receives emitted light from the light emitting element. The optical coupling element contains a silicone resin and includes a light transparent resin which covers the light emitting element and the light receiving element and transmits the signal light emitted from the light emitting element to the light receiving element (for example, a specific light transparent gel resin) and a light reflection resin which covers a circumference of the light transparent resin. To the light transparent resin, a dye which absorbs light having a shorter wavelength than a predetermined wavelength range including a light emitting wavelength of the light emitting element is added in a concentration of 0.7% by weight or less. | 09-06-2012 |
| 20110278480 | Optical power transmission system and method having multiple optical power forms - A system for delivering optical power over optical conduits includes delivering more than one optical power form over an optical conduit. | 11-17-2011 |
| 20110278481 | Optical power transmission system and method having multiple optical power forms with partial free-space transmission - A system for delivering optical power over an optical conduit includes at least one than one optical power source delivering multiple optical power forms at least partially over a free space. | 11-17-2011 |
| 20110278479 | Optical power transmission system and method having counter-propagating control signal - A system for delivering optical power over optical conduits includes at least one optical power source delivering multiple optical power forms over an optical conduit with a counter propagating optical control signal. | 11-17-2011 |
| 20110101256 | Output circuit, light-receiver circuit using the same, and photocoupler - An output circuit includes a bias circuit that operates when a power supply voltage equal to or larger than a predetermined voltage is applied, a differential amplifier circuit that outputs signals according to input differential signals upon receiving a bias current or bias voltage generated when the bias circuit is operated, an output stage circuit that receives differential signals according to an output from the differential amplifier circuit and outputs output signals according to the differential signals, the output stage circuit having fewer number of stages of elements connected in series than the bias circuit, and a pull-down circuit that forcibly sets a level of one of the differential signals received by the output stage circuit to a ground voltage to fix the level of the output signals output from the output stage circuit when the bias current or the bias voltage generated by the bias circuit is not supplied. | 05-05-2011 |
| 20110121210 | Digital output circuit - A digital output circuit includes a photocoupler, having one light emitting diode and one phototransistor, for transmitting a digital voltage output signal to the load; an output transistor, having a control terminal, a first terminal and second terminals, for transmitting an output signal from the phototransistor to the load; and a voltage smoothing unit. Further, a first terminal of the phototransistor is connected to a power supply terminal via a first resistor and a second terminal of the phototransistor is connected to the control terminal of the output transistor. A second resistor is connected between the control terminal and the first terminal of the output transistor. The first terminal of the output transistor is connected to the common terminal and the second terminal of the output transistor is connected to the output terminal. The voltage smoothing unit is connected between the first terminal of the phototransistor and the common terminal. | 05-26-2011 |
| 20100032592 | PHOTO INTERRUPTER AND METHOD MANUFACTURING THE SAME - A method of manufacturing a photo interrupter includes forming a frame including a first frame part and a second frame part which are disposed at an interval to be facing each other, mounting at least one light-emitting element on a first board and attaching the first board to the first frame part of the frame, mounting a light-receiving element on a second board and attaching the second board to the second frame part of the frame, the light-receiving element being mounted on the second board to be facing the light-emitting element so that the light-receiving element receives light emitted from the light-emitting element, and providing a positioning member on the frame by integrally forming the positioning member with the frame. | 02-11-2010 |
| 20080265185 | LIGHT EMITTING APPARATUS AND METHOD FOR INSPECTING SAME - A light emitting apparatus includes: a light emitting device with one terminal connected to a power supply terminal; a voltage detector connected between the power supply terminal and a ground terminal; a driver circuit unit connected between an input terminal receiving a signal as input and the ground terminal; a first switch connected between another terminal of the light emitting device and the driver circuit unit; a second switch connected between the input terminal and the other terminal of the light emitting device; and a switch controller. The switch controller is operable to perform an operation mode in which the first switch is connected and the second switch is disconnected in response to an output from the voltage detector having detected that a power supply voltage applied to the power supply terminal is within a range from a first voltage to a second voltage, and to perform an inspection mode in which the first switch is disconnected and the second switch is connected in response to an output from the voltage detector having detected that the power supply voltage is outside the range from the first voltage to the second voltage. | 10-30-2008 |
| 20080283780 | DEVICE HAVING GALVANIC OPTOCOUPLING - The present disclosure relates to an architecture of a device with galvanic optocoupling of the type having at least one optical source and one optical detector, optically connected by means of an insulation layer that functions to transmission optical signals, and having at least one input terminal and one output terminal, the optical source and the optical detector connected to a respective first and second voltage reference. The optical source is realized by a structure integrated directly above the insulation layer in correspondence with the optical detector, the architecture thus completely realized inside a single integration island. | 11-20-2008 |
| 20080251739 | OPTICAL COUPLER PACKAGE - A method is disclosed. The method includes forming a substrate with a leadframe and a molding compound. The molding compound fills internal spaces in the leadframe and forms a dam structure. An optical emitter and an optical receiver are placed on the substrate. An optically transmissive medium is formed between the optical emitter and optical receiver. | 10-16-2008 |
| 20080302982 | POLARIZER ELEMENTS AND SYSTEMS USING THE SAME - In general, in a first aspect, the invention features an article that includes a plurality of spaced apart ridges extending along a first direction, adjacent ridges being spaced with a period of Λ or less, each ridge comprising a plurality of layers where adjacent layers have different refractive indexes at a first wavelength λ | 12-11-2008 |
| 20090014669 | Semiconductor relay - The semiconductor relay comprises: an insulated type DC/DC power supply | 01-15-2009 |
| 20090152478 | Arrangement comprising two elements which can be rotatably displaced in respect of one another - Data is to be exchanged between a rotating element and a further element, with the rotating element being rotated by way of a hollow shaft. Light is coupled into torus halves and is reflected into a torus half and onto torus inner walls so often by way of a small opening until it exits at an opening of the other torus half. In a first embodiment, a torus-shaped optical fiber is divided into two torus halves. In another embodiment, hollow tori are used, which are filled with a fluid, namely either with a liquid or with air. | 06-18-2009 |
| 20100155627 | METHODS AND APPARATUSES FOR PERFORMING COMMON MODE PULSE COMPENSATION IN AN OPTO-ISOLATOR - In an opto-isolator, a common mode pulse compensation circuit is provided that senses when a common mode pulse event occurs and that adds current to the LED drive current to compensate for a decrease in the LED drive current caused by the occurrence of the event. The common mode pulse compensation circuit is capable of operating effectively over a very wide range of common mode pulse slopes by automatically adjusting the amount of current that is added to the LED drive current based at least in part on the slope of the sensed common mode pulse. In addition, the common mode pulse compensation circuit is capable of being implemented with LEDs that operate at very low drive currents, which allows the power consumption requirements of the opto-isolator to be reduced. | 06-24-2010 |
| 20100230621 | PHOTONIC FILTERING OF ELECTRICAL SIGNALS - A filter and a method of filtering a high frequency electrical signal using photonic components is disclosed. The filter has a serially fiber-coupled laser source, a modulator, a filter, and a photodetector. The electrical signal is applied to the modulator. The modulated light propagates through the filter which is constructed to pass not only a modulated sideband, but also at least a fraction of light at the carrier frequency of the laser. The photodetector detects a signal at the beat frequency between the carrier and sideband signals, after both signals have propagated through the filter. As a result, a separate optical branch for light at the carrier frequency is not required, which considerably simplifies the filter construction and makes it more stable and reliable. | 09-16-2010 |
| 20100127193 | ISOLATED HIGH-SPEED DIGITAL INTERFACE FOR VEHICLES - An apparatus and method for providing an isolated high-speed digital interface for communicating high-speed digital data within a vehicle. In architecture, the interface includes one or more input terminals and one or more output terminals. Each output terminal being associated with one of the one or more input terminals without any electrically conductive path existing between the output terminal and the input terminal, and instead the input terminal and the output terminal are coupled to one another by an optical coupling. The present invention can also be viewed as a method that can be broadly summarized by the following steps, providing at least one input terminal for receiving data and providing at least one output terminal. Wherein the output terminal is associated with the one input terminal without any electrically conductive path existing between the output terminal and the input terminal, are coupled to one another by an optical coupling. | 05-27-2010 |
| 20110057128 | OPTO-ISOLATOR INCLUDING A VERTICAL CAVITY SURFACE EMITTING LASER - The present invention relates to opto-isolators. Opto-isolators are disclosed that include a transmitter package and a vertical VCSEL disposed within the transmitter package. The opto-isolators further include a receiver package and a photodetector disposed within the receiver package. The photodetector is optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include an alignment package configured to receive the transmitter package and the receiver package. In another embodiment, opto-isolators include a VCSEL and a photodetector optically coupled to the VCSEL and configured to receive an output optical signal generated by the VCSEL. The opto-isolators further include a package enclosing both the VCSEL and the photodetector. | 03-10-2011 |
| 20090140179 | SEMICONDUCTOR DIE PACKAGES SUITABLE FOR OPTOELECTRONIC APPLICATIONS HAVING CLIP ATTACH STRUCTURES FOR ANGLED MOUNTING OF DICE - An optocoupler package is disclosed. The package includes a substrate comprising a substrate surface, a first device, and a clip structure attached to the first device. The clip structure and the first device are mounted on the substrate, and the first device is oriented at an angle with respect to the substrate surface. A second device is mounted on the substrate, where the first device is capable of communicating with the second device. | 06-04-2009 |
| 20080230727 | PHOTO COUPLER AND METHOD FOR PRODUCING THE SAME - In structures of the typical conventional photo couplers, an unwanted rotation or a dislocation during the manufacturing thereof is occurred during the manufacture of the couplers. The photo coupler according to the embodiment includes a lead frame (first lead frame), a lead frame (second lead frame) having an end section bent toward the lead frame, a light emitting element (first optical device) fixed to the lead frame, a light receiving element (second optical device) fixed to the lead frame so as to face the light emitting element, and an electrically insulating film, provided between the light emitting element and the light receiving element, and including an end section having protruding and contracting sections in plan view. An end section of the lead frame has protruding and contracting sections in plan view. Further, the end section of the electrically insulating film fits in the end section of the lead frame. | 09-25-2008 |
| 20110108747 | OPTOCOUPLER DEVICES - Optocoupler devices and methods for making and using such devices are described. The optocoupler devices contain a light emitting component (a light emitting diode [LED]) and a light receiving component (a phototransistor [PT]) device that are embedded within the substrate, rather than being attached to the surface of the pre-molded substrate. Such a configuration eliminates the bond wires that are often used when the LED and PT are attached on the substrate, improves the electrical performance, and allows the final optocoupler package to be made smaller and thinner. Other embodiments are described. | 05-12-2011 |
| 20110114858 | Digital input circuit - A digital input circuit includes a pair of input terminals that an input signal of a digital voltage signal is inputted; a photocoupler for transmitting the input signal from the input terminals to an input port of a microcomputer and having one light emitting diode and one phototransistor, wherein the light emitting diode of the photocoupler is connected between the input terminals, a collector of the phototransistor is connected to a positive side of a power supply, and an emitter of the phototransistor is connected to ground via a first resistor; and a bipolar transistor provided between the ground and a second resistor, wherein a collector thereof is connected to the second resistor for pulling up the input port of the microcomputer, an emitter thereof is connected to the ground, and a base thereof is connected to a connection node between the emitter of the phototransistor and the first resistor. | 05-19-2011 |
| 20110174999 | GALVANIC ISOLATION THAT INCORPORATES A TRANSFORMER WITH AN OPTICAL LINK AND THAT CAN BE INTEGRATED ONTO A SINGLE SEMICONDUCTOR SUBSTRATE - Methods and structures provide galvanic isolation for electrical systems using a wide oxide filled trench, and that allows power across the system divide with a transformer, and that transmits data at a high baud rate using an optical link. The system solution allows the integration of all of these elements onto a single semiconductor substrate in contrast to currently available galvanic isolation systems that require multiple individual silicon die that are connected by wire bonds and are relatively slow. | 07-21-2011 |
| 20110101255 | OPTICAL TRANSCEIVER - An optical transceiver includes a transmitting side photoelectric converter, a transmitting side circuit board, a receiving side photoelectric converter, a receiving side circuit board, a surface of the transmitting side circuit board being arranged to face a surface of the receiving side circuit board, a lens block disposed between the transmitting side circuit board and the receiving side circuit board, and optically connected to a transmitting side optical fiber and a receiving side optical fiber, and a frame body holding the lens block such that the lens block aligns with the transmitting side photoelectric converter and the receiving side photoelectric converter, and to fix the transmitting side circuit board and the receiving side circuit board at a predetermined distance from each other. | 05-05-2011 |
| 20080296520 | OPTICAL COUPLING DEVICE - In one aspect of the present invention, an optical coupling may include a supporting member which has a first surface, a second surface on the opposite side of the first surface, and an opening portion, and which is formed of an insulating material, a first wiring layer provided on the first surface of the supporting member, a second wiring layer provided on the second surface of the supporting member, a light emitting element which is provided on the first surface, and which is connected to the first wiring layer, and at least one portion of which faces the opening portion, a light receiving element which is provided on the second surface, and which is connected to the second wiring layer, and which faces the light emitting element through the opening portion, a light shielding resin provided so as to cover the light emitting element, the light receiving element, and the first wiring layer and the second wiring layer. | 12-04-2008 |
| 20100224801 | PHOTO INTERRUPTER - A photo interrupter is provided. The photo interrupter includes a housing and a light emitting/receiving unit. The housing defines a recess portion and has a first engaging portion disposed in the recess portion. The light emitting/receiving unit has a second engaging portion. When the light emitting/receiving unit is disposed in the recess portion, the first engaging portion engages with the second engaging portion. | 09-09-2010 |
| 20120007005 | OPTO-ISOLATOR THAT USES A NONTRANSPARENT HOLLOW TUBE AS THE OPTICAL WAVEGUIDE EXTENDING BETWEEN THE TRANSMITTER AND RECEIVER MODULES OF THE OPTO-ISOLATOR - In an opto-isolator, a nontransparent hollow tube having a smooth inner surface with mirror-like qualities is used as the optical waveguide for coupling optical signals between the transmitter module and the receiver module and for providing electrical transient isolation. | 01-12-2012 |
| 20100327194 | MULTI-BIT USE OF A STANDARD OPTOCOUPLER - A method of indicating multi-bit values using a single optocoupler indicates a first multi-bit value in response to a first range of optocoupler output voltages, and indicates a second multi-bit value in response to a second range of optocoupler output voltages. The first range is different from the second range. | 12-30-2010 |
| 20100181506 | OPTOELECTRONIC APPARATUS FOR TRANSMISSION OF AN ELECTRICAL SIGNAL - An optoelectronic apparatus for transmission of an electrical signal via, galvanically isolated by means of a one-piece, translucent, plastic body, an input current circuit. At least one optical transmission element, and an output current circuit, having at least one optical receiving element, wherein the optical transmission element has a principle transmission axis and the optical receiving element a principle receiving axis, which are oriented so as to concide with a shared optical axis. The plastic body has two cavities separated via a partition for accommodating, respectively, the optical transmission element and the optical receiving element, wherein the transmitting element and/or the receiving element are/is placed through the openings so far into the cavities of the plastic body, that, following a case of overvoltage on the transmitting element and/or the receiving element, an insulating air distance and creep path according to an insulation coordination is still present along outer surfaces of the plastic body. | 07-22-2010 |
| 20100270483 | OPTICAL COUPLER - An optical coupler has a first terminal board and a second terminal board, a first conversion element for converting an electrical signal into an optical signal mounted on a surface of a first element mounting section of the first terminal board, a second conversion element for converting an optical signal into an electrical signal mounted on a surface of a second element mounting section of the second terminal board; and a light reflective curved surface formed so as to cover the first conversion element and the second conversion element. The surfaces of the first element mounting section and the second element mounting section have the same orientation. An optical signal emitted from the first conversion element is reflected on the light reflective curved surface, to optically couple the first conversion element and the second conversion element. The second conversion element has a plurality of light receiving cells that are electrically connected in series, arrayed in parallel with one another, and longer in a longitudinal direction than in a width direction. The first conversion element is arranged inside an area sandwiched between two contact lines that are set so as to be in contact with an outline of the second conversion element, and are in parallel with a length direction of the light receiving cells. | 10-28-2010 |
| 20120228529 | CONTACTLESS COUPLING AND METHOD FOR USE WITH AN ELECTRICAL APPLIANCE - The present invention relates to a coupling and various methods of use of the coupling. In one embodiment the invention provides a coupling for use with an appliance operated by a power supply, which coupling allows mounting/dismounting of the appliance without electrical isolation from the supply said coupling comprising: a) a mounting member having a first encapsulated transformer element and suitable controls connectable to the power supply, said member being suitable for fixing to a structure; and b) a holder member engageable with said mounting member, wherein the holder member is suitable for holding or for connecting thereto an appliance, said holder member having other suitable controls and a second encapsulated transformer element able conduct power to an appliance; c) wherein engagement of the first and second members is able i) to cause induction of current in the second encapsulated transformer element enabling powering of an appliance and ii) is able to cause a signal to be carried between the controls and an appliance to control and/or monitor the appliance; and wherein disengagement of the first and second members results in no induction and no carriage of the signal. | 09-13-2012 |
| 20110121211 | Galvanic Isolator Having Improved High Voltage Common Mode Transient Immunity - A galvanic isolator having a transmitter die, a receiver die, and a lead frame is disclosed. The transmitter die includes an LED having first and second contacts for powering the LED, and the receiver die includes a photodetector. The lead frame includes first and second transmitter leads, and first and second receiver leads. The transmitter die is bonded to the first lead, the first contact being connected electrically to the first transmitter lead and the second contact being connected to the second transmitter lead. The receiver die is connected to the first and second receiver leads. The LED and the photodetector are positioned such that light generated by the LED is received by the photodetector. The first and second transmitter leads are capacitively coupled to the first receiver lead. The capacitive couplings are characterized by first and second capacitance values that are substantially the same. | 05-26-2011 |
| 20100327195 | LOW-POWER OPTOCOUPLER - An embodiment of an optocoupler may provide electrical isolation between signals on a driver side and signals on a receiver side of the optocoupler by generating light signals via a fiber-optic link to the receiver. One embodiment includes driver circuit that may receive an input signal (or a series of input signals) having a specific clock cycle. Instead of driving a light source, such as a light-emitting diode, for the entire duration in which an input signal may be at a high logic level, the LED may be driven with only a pulse to indicate any transitions from high-to-low or from low-to-high. In another embodiment, a receiver circuit may then interpret pulses of differing widths to reconstruct a series of logical signal from only its pulse transitions. By limiting the amount of time in which the LED is on, yet still conveying all underlying data in the input signal, the optocoupler reduces the overall power needed during operation. | 12-30-2010 |
| 20120298890 | OPTOCOUPLER CIRCUIT FOR GATE DRIVER - An optocoupler circuit includes a switch connected in parallel with a photo LED, the photo LED having an anode and a cathode. The anode is connected to a power supply via a decoupling capacitor. The optocoupler circuit is arranged so that the switch turns on the photo LED when in the open position. When closed, the switch directs current flow through a series resistor to ground and shunts current flow away from the photo LED to turn off the photo LED. A second capacitor is connected to the cathode of the photo LED. The second capacitor is wired in series with a second switch and a current limiting resistor connected to ground. The first switch and second switch operate in complementary states to prevent the cathode connected capacitor from discharging. The disclosed optocoupler circuit provides the ability to function at increased levels of common mode voltage transients. | 11-29-2012 |
| 20120280151 | ELECTRICAL ISOLATION DEVICE - The invention relates to an analog isolation device ( | 11-08-2012 |
