| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 315302000 | Current generator control | 12 |
| 20080238342 | MICROPROCESSOR-CONTROLLED INSERTABLE FLASHLIGHT ADAPTER DEVICE - An insertable flashlight adapter device for use in an ordinary flashlight having a lamp includes a disc-like shaped housing unit. Electronic circuitry is disposed within the housing unit for selectively operating the flashlight in at least three different modes. The electronic circuitry has a voltage comparator for determining which one of the at least three different modes the flashlight is being operated. The electronic circuitry also has logic and control means for selectively interrupting current to the flashlight lamp so as to cause the at least three different modes of operation. The logic and control means includes a first timer for monitoring a first time interval between mode changes in the voltage comparator and a second timer for monitoring a second time interval between a power-ON and power-OFF state of the flashlight lamp. As a result, the adapter device has eliminated the need of modifications to make an ordinary flashlight operate selectively in the different modes of operation and to maintain the lifespan of the original ON-OFF switch. | 10-02-2008 |
| 20090001905 | Delta-sigma signal density modulation for optical transducer control - A controller for optical transducers uses delta-sigma signal density modulation to reduce electromagnetic interference. | 01-01-2009 |
| 20090026981 | LIGHT EMITTING ELEMENT DRIVER DEVICE - A driver device for driving light emitting elements comprises a data latch having an input coupled to an input signal, a current control circuit having an input coupled to the data latch, and an output coupled to the input of an output stage, the latter being configured to drive the light emitting elements. The driver device has a power control circuit having an input coupled to the output of the data latch and an output coupled to the input of the current control circuit. The power control circuit is configured to control the current control circuit and the latter is configured to deliver a first current when the data inputted to the power control circuit is in a first state and a second current when at least part of the data inputted to the power control circuit is in a second state. | 01-29-2009 |
| 20090251075 | INERTIAL-POWER LIGHT-EMITTING DEVICE - A light-emitting device driven by an inertial power includes an inertial module, a magnetic element, a magnetic-conductive element, at least one wire, and a light-emitting module. Under an inertial effect, the inertial module drives the magnetic element to rotate, such that a magnetic field generated by the magnetic-conductive element changes due to the rotation of the magnetic element. Moreover, the wire wound around the magnetic-conductive element generates a drive current in response to the changing of the magnetic field, so as to drive the light-emitting module to emit a light. As such, the magnetic field is changed under an inertial power, so as to generate a drive current for driving the light-emitting module, thereby achieving, a renewable energy source, environmental protection, and power-saving purposes. | 10-08-2009 |
| 20100007291 | CURRENT-LIMITING PROTECTION CIRCUIT OF A REMOTELY CONTROLLED CEILING FAN-LAMP - A current-limiting protection circuit of remotely controlled ceiling fan-lamp is disclosed. The current-limiting protection circuit includes a microcontroller unit for detecting rectangular wave signal reflective of the power used by a lamp load. The rectangular wave signal is compared with nominal value. In the case that the positive bandwidth of the rectangular wave signal is larger than the nominal value, it is indicated that the lamp load is in an overloaded state. Under such circumstance, the microcontroller unit controls a lamp load driving unit to change driving manner and lower the power used by the lamp load to a value within the nominal range. | 01-14-2010 |
| 20100026210 | APPARATUS FOR DRIVING A GAS DISCHARGE LAMP | 02-04-2010 |
| 20100134047 | Modular LED Light Bulb - An LED-based lighting device and method for making the same are disclosed. The lighting device includes an LED light source mounted on a heat sink, a power adaptor, and a controller. The power adaptor is configured to be interchangeable with a conventional incandescent bulb power adapter. The controller provides an average current to the LED light source when power is coupled to the device via the power adaptor. The average current causes the LED light source to generate light of a predetermined standard intensity that is substantially independent of variations in the LED light source from device to device. In one aspect of the invention, the LED light source includes a plurality of LEDs connected in series, the LEDs are bonded to the heat sink and connected to one another in series by wire bonds and to conducting traces on the heat sink. | 06-03-2010 |
| 20100213874 | Optocoupler System with Reduced Power Consumption and Pulse Width Distortion - According to one embodiment, there is provided an optocoupler system configured to generate current signals having high, low and no amplitude portions in response to the receipt of logic high and low input signals. The varying amplitude portions of the current signals are used to drive other portions of the isolation circuitry, and result in reduced power consumption and dissipation, as well as reduced pulse width distortion. | 08-26-2010 |
| 20110115411 | Current Regulator for Multimode Operation of Solid State Lighting - An exemplary apparatus embodiment provides a plurality of operating modes for solid state lighting, such as a flash mode and a constant or background lighting mode for use with devices such as cameras. An exemplary apparatus comprises a memory adapted to store a plurality of average current parameters; and a controller adapted to modulate an energizing cycle time period (“T”) for providing power to the solid state lighting as proportional to the product of the selected average current parameter (“α”) and a reset time period (“T | 05-19-2011 |
| 20110140636 | SYSTEM AND METHOD FOR PROVIDING A CONTROL SIGNAL - The system, which provides a control signal, includes an over-current control unit, a time clock that provides a periodic time signal, and a clock generator unit that includes a first input terminal, a second input terminal, and an output terminal. The first input terminal is coupled to the time clock and the output terminal is coupled to the over-current control unit. The first input terminal of the clock generator unit receives the periodic time signal and the second input terminal of the clock generator unit receives a modification signal. The clock generator unit generates a clock signal based on the periodic time signal and the modification signal. The output terminal of the clock generator unit provides the clock signal to the over-current control unit, and the over-current control unit provides a control signal based on the clock signal. | 06-16-2011 |
| 20110215738 | WIND TURBINE APPARATUS, SYSTEMS AND METHODS - A wind turbine is disclosed. The wind turbine includes comprising an inflatable portion comprising one or more blades and a device for rotatably driving the inflatable portion at a predetermined rate for a predetermined time. | 09-08-2011 |
| 20150028774 | LIGHT-EMITTING ELEMENT LIGHTING DEVICE, LIGHT-EMITTING MODULE, ILLUMINATING APPARATUS, AND LIGHT-EMITTING ELEMENT LIGHTING METHOD - A light-emitting element lighting device includes: a step-down chopper circuit which outputs current to a light-emitting element; a current command circuit which selects between (i) light-emission mode for causing a light-emission current larger than a constant rated current, which flows to the light-emitting element when continuous light-emission is caused, to flow and (ii) detection mode for causing an abnormality detection current smaller than the rated current, to flow for detecting a light-emitting element abnormality; a voltage detection circuit which detects a both-end voltage of the light-emitting element; and a control circuit which causes the step-down chopper circuit to stop outputting the current to the light-emitting element, when the both-end voltage detected by the voltage detection unit in the detection mode is lower than or equal to an abnormality detection threshold voltage which is set lower than the rated voltage at a time when the light-emitting element is turned ON. | 01-29-2015 |
