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| Number | Title | Issue Date |
| 7999483 | Circuit arrangement and method for actuating an electrical load A circuit arrangement (1) for driving an electrical load (13) comprises a first and a second terminal (2, 3) for feeding a first and a second control signal (S1, S2), a first output (23), to which an electrical load (13 | 08/16/2011 |
| 7994729 | Optical element driving circuit An optical element driving circuit flexibly configures energy sources to cause illumination with an optical output element, such as a flash lamp. The energy sources include an illumination capacitor and a capacitive voltage divider circuit coupled with the optical o... | 08/09/2011 |
| 7982407 | Stroboscopic illuminator A photographic illumination system, comprising a first stroboscopic flash tube, for emitting an intense broadband illumination pulse comprising ultraviolet rays; a second stroboscopic flash tube, for emitting a continuous series of broadband illumination pulses comp... | 07/19/2011 |
| 7915835 | Imaging apparatus, strobe device, and charging-control method An imaging apparatus including a strobe device having a charging circuit of a separately excited oscillation type is provided. The apparatus includes a main capacitor in which charge is accumulated to supply power to a strobe-light-flashing unit, a step-up transform... | 03/29/2011 |
| 7652434 | Electronic flash unit and manufacturing method thereof The electronic flash unit disclosed comprises: a transformer (14) to vary voltages of a power supply; an accumulator (16) composed of a main capacitor (17) to charge an electric energy supplied from the transformer (14); a lamp unit (4... | 01/26/2010 |
| 7592752 | Lighting control circuit for flash discharge tube and method of use A lighting control circuit for a flash discharge tube can include an IGBT drive circuit and a timer circuit provided in parallel to each other to output a drive voltage to an IGBT device. An OR circuit can be provided for delivering an output to the IGBT device base... | 09/22/2009 |
| 7545104 | Power supply circuit for flash discharge tube A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application accumulates energy in a residual inductance existing in the circuit con... | 06/09/2009 |
| 7471049 | Optical element driving circuit Optical element driving circuits flexibly configure energy sources to cause a flash tube to produce illumination at one of multiple output intensities. The driving circuits allow a single strobe alarm to take the place of multiple strobe alarms individually dedicate... | 12/30/2008 |
| 7456585 | Optical element driving circuit Optical element driving circuits flexibly configure energy sources to cause a flash tube to produce illumination at one of multiple output intensities. The driving circuits allow a single strobe alarm to take the place of multiple strobe alarms individually dedicate... | 11/25/2008 |
| 7423385 | System and method for controlling voltage on discharge capacitors which control light energy from flash lamps A system and method are described for controlling voltage on discharge capacitors which control light energy from flash lamps, wherein the method includes measuring over time an operational behavior of a flash lamp for performing photothermolysis, wherein a discharg... | 09/09/2008 |
| 7414370 | Increasing reliability of operation of light emitting diode arrays at higher operating temperatures and its use in the lamps of automobiles A lamp in which a LED array is coupled to a transistor such that the same amount of current flows through both. The voltage level at the control (e.g., base) terminal of the transistor is controlled such that the current magnitude is reduced when the operating tempe... | 08/19/2008 |
| 7375471 | Charging circuit A charging circuit has a battery 12, switching element 14, and resistor 16 for current detection arranged on the primary side of transformer 10. Diode 18 and capacitor 20 for storing electric power are arranged on the second... | 05/20/2008 |
| 7359632 | Flash apparatus, image capture apparatus having a flash apparatus, and method of controlling a flash apparatus A flash apparatus or an image capture apparatus includes a charging unit, configured to boost a voltage of an electric source and a control unit, configured to calculate the sum of the light emission amount within a predetermined period of time. The control unit red... | 04/15/2008 |
| 7339441 | Circuit and method for quickly turning off MOS device An OTA driving an MOS device needs to turn it off quickly to minimize overshoot during a heavy to light load state. The drains of the MOS device can be used to accelerate turning off the MOS device. A first drain is connected to the gate of the MOS device. A second ... | 03/04/2008 |
| 7336038 | Method and apparatus for single-ended conversion of DC to AC power for driving discharge lamps The present disclosure introduces a simple method and apparatus for converting DC power to AC power, and, specifically, to single-ended inverter circuits for driving discharge lamps such as a Cold Cathode Fluorescent Lamp (CCFL) or an External Electrode Fluorescent ... | 02/26/2008 |
| 7333004 | Self-adjusting strobe A strobe unit responds to a selected candela output by selecting an optimal capacitor charging frequency to minimize current requirements at the selected candela output. A plurality of charging frequencies can be stored and associated with available input power and ... | 02/19/2008 |
| 7318661 | Universal light emitting illumination device and method Disclosed is a method and apparatus for providing a light emitting diode and driving circuitry integrated into a component module that will retrofit common incandescent lightbulb applications. The disclosed embodiments will perform with high efficiency at a wide ope... | 01/15/2008 |
| 7319282 | Switch circuit A switch circuit for controlling the supply of electrical power from an electrical power source to a load includes a power supply switch comprising input, output and control terminals. The circuit further includes an electronic switching device connected to the cont... | 01/15/2008 |
| 7288417 | On-chip signal transformer for ground noise isolation A mixed-signal chip having a signal transformer located between analog circuitry and digital circuitry. The signal transformer includes a primary winding electrically coupled to the analog circuitry and a secondary winding electrically coupled to the digital circuit... | 10/30/2007 |
| 7265527 | Direct current multiplier A self-oscillating DCM is disclosed comprising two inductors that charge and discharge 180 degrees out of phase such that the charging inductor is conducting an upward ramping current and the discharging inductor is conducting a downward ramping current. A load rece... | 09/04/2007 |
| 7235766 | Electromagnetic radiation generation based on an object characteristic Method and system for generating electromagnetic radiation wherein one or more attributes of the electromagnetic radiation are adjusted based on a characteristic of the object being illuminated. The object characteristic can be obtained based on a sensed property of... | 06/26/2007 |
| 7230354 | Driver system for MOSFET based, high voltage, electronic relays for AC power switching and inductive loads A method and apparatus provides for high-speed switching of high-voltage and high power MOSFET-based solid state relays. A driver for a MOSFET based, high voltage, high current electronic relay includes a current supply for actuating the switching circuit and a tran... | 06/12/2007 |
| 7221100 | Gas discharge lamp power supply An apparatus for providing power to a gas discharge lamp comprises a storage capacitor and an ignition switch coupled through a primarily parasitic first inductor to a parallel combination of a diode assembly and a second inductor in series with a gas discharge lamp... | 05/22/2007 |
| 7218051 | Discharge tube A discharge tube includes a cylinder having first and second end planes, first and second discharge electrodes coupled to the respective first and second end planes, the first and second discharge electrodes having respective upper and lower discharge planes forming... | 05/15/2007 |
| 7200248 | Eye image pickup apparatus and entry/leave management system An eye image pickup apparatus includes an image pickup unit, a guide mirror, a range sensor, and an infrared illuminating section. The image pickup unit includes an objective lens, an image pickup element such as a CCD, a shooting section and a light guide section a... | 04/03/2007 |
| 7172310 | Flashlight with pivotal swivel light emitting assembly The present invention is to provide a flashlight comprising a case, a swivel mount provided on a front end of the case and adapted to turn horizontally along a longitudinal central axis of the case, two opposite first and second arms extended upwardly from the swive... | 02/06/2007 |
| 7122973 | Light-generating apparatus control system A control system for a light-generating apparatus can include a control cyclically operating a switching element in series with the circuit including the apparatus's power source and light. Upon actuation of the apparatus's switch within a specified switching interv... | 10/17/2006 |
| 7119502 | Flashing discharge tube-use power supply and control method therefor A voltage for light emission is applied to the positive electrode 11 and negative electrode 13 of a flash discharge tube 3 (xenon flash lamp) by a charge and discharge capacitor 17. When the voltage of the charge and discharge capacitor | 10/10/2006 |
| 7107977 | Ignition apparatus for internal combustion engine An ignition apparatus for an internal combustion engine, which is controlled by a control unit, includes a connector, an ignition coil assembly, an igniter and a capacitor. The connector is electrically connected with the control unit, and includes an input terminal... | 09/19/2006 |
| 7106007 | Flashlight lamp circuit with automatic light adjustment A flashlight lamp circuit with automatic light adjustment includes a flashlight charging unit for controlling charging of a main capacitor, a flashlight activation unit activating the flashlight lamp to project a flashlight on the photographed object according to a ... | 09/12/2006 |
| 7102295 | Electronic device with illumination circuit and EL device utilizing the same An electronic device having an illumination circuit. The illumination circuit utilizes an AC current of an AC driving device to drive an illumination device such as an electroluminescent lamp and the remaining life of the AC driving device indicated by the brightnes... | 09/05/2006 |
| 7088054 | Apparatus for emitting pulses of light and systems employing such apparatus An apparatus with a flash lamp can trigger a flash of light by application of an ignition pulse. The apparatus encompasses a first capacitor, a second capacitor, a switching element and a control circuit. The first capacitor, second capacitor and switching element a... | 08/08/2006 |
| 7082336 | Implantable intravascular device for defibrillation and/or pacing The present application describes an intravascular implantable pacing and/or defibrillation system. The described system includes a pulse generator that is implantable within a blood vessel and proportioned to blood flow through the blood vessel, and at least one le... | 07/25/2006 |
| 7081718 | Power supply circuit for flash discharge tube A voltage is applied across the positive electrode and negative electrode of a flash discharge tube (xenon flash lamp) to emit light by a charge and discharge capacitor. This voltage application accumulates energy in a residual inductance existing in the circuit con... | 07/25/2006 |
| 7075248 | Lamp driving system A system driving a lamp set having a first lamp and a second lamp is provided. The system has a power supply circuit providing an AC signal to the lamp set, and a balance circuit having a current balancing transformer, a first impedance and a second impedance for ba... | 07/11/2006 |
| 7057871 | Actuation circuit for an electromagnetic actuator The actuation circuit for an actuator (10) includes an energy store (11) arranged near the actuator (10). The energy store (11) is configured such that it instantaneously discharges in response to a trigger signal, wherein the discharge c... | 06/06/2006 |
| 7050104 | Image sensing apparatus An apparatus employing a flashlight device such as an electronic still camera, a camcorder, etc. with an adequate luminous quantity during sensing an image, independently of an electric charge accumulation period in an image sensing device, thereby to make an adequa... | 05/23/2006 |
| 7049760 | Camera flash circuit using a piezoelectric transformer to trigger firing of the camera flash tube A camera flash circuit employing a piezoelectric transformer in the flash trigger circuit, the piezoelectric transformer having input terminals coupled to the main flash voltage storage capacitor and an output terminal coupled to the flash trigger terminal on the fl... | 05/23/2006 |
| 7050105 | Electronic camera and battery voltage controlling method employed therein for successively, rather than simultaneously, operating camera portions during conditions of low battery voltage An electronic camera free from failures of an internal circuit, such as a signal processing portion, caused by a drop in battery voltage when there remains a small amount of electric charge in the battery, includes a signal processing portion for signal-processing a... | 05/23/2006 |
| 7030571 | Stroboscopic illuminator A photographic illumination system, comprising a first stroboscopic flash tube, for emitting an intense broadband illumination pulse comprising ultraviolet rays; a second stroboscopic flash tube, for emitting a rapid series of broadband illumination pulses comprisin... | 04/18/2006 |
