Time-controlled Patents (Class 315/360)
  • Patent number: 10904684
    Abstract: This application relates an activity detector (100) for detecting signal activity in an input audio signal (SIN), such as may be used for always-on speech detection. The activity detector has a first time-encoding modulator (TEM) 101 including a first hysteretic comparator (201) for generating a PWM (pulse-width modulation) signal based on the input audio signal. A second TEM (103) having a second hysteretic comparator (401) is arranged to receive a reference voltage (VMID) and generate a clock signal (SCLK). A time-decoding converter (102) receives the clock signal and generates count values of a number of cycles of the clock signal in periods defined by the PWM signal. An activity monitor (104) is responsive to a count signal (SCT) from the TDC 102 to determine whether the input audio signal comprises signal activity above a defined threshold.
    Type: Grant
    Filed: November 14, 2018
    Date of Patent: January 26, 2021
    Assignee: Cirrus Logic, Inc.
    Inventor: John Paul Lesso
  • Patent number: 10663144
    Abstract: Disclosures of the present invention describe a human body-friendly light source constituted by at least one lighting unit and a plurality of color temperature (CT) reducing films stacked to each other. The CT reducing films are connected to a light emission surface of the lighting unit, so as to apply a color temperature reducing treatment to a light emitted from the lighting unit. Exponential data have proved that, two or more stacked CT reducing films exhibit an apparent color temperature reducing effect on the light. Exponential data have proved that, with the increasing of the stack numbers of the CT reducing films, the light is concerted to an orange-white light with color temperature in a range of 1,000-2,500 K, so as to make a sensitivity of melatonin suppression in response to the light be getting lower.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: May 26, 2020
    Assignee: National Tsing Hua University
    Inventors: Jwo-Huei Jou, Hsin-Fa Lin, Cheng-Chieh Lo
  • Patent number: 10573248
    Abstract: A backlight driving device including a light source array, a driving circuit and a scanning circuit is provided. The light source array includes backlight units electrically connected to scanning lines and driving lines. The driving circuit outputs driving signals to the backlight units through the driving lines, and the driving signals respectively includes driving pulses in different time intervals. The scanning circuit outputs scanning signals to the backlight units through the scanning lines, and the scanning signals respectively includes a start pulse in at least one of the time intervals. The start pulses of the scanning signals respectively correspond to the driving pulses in the same time interval, and drive the backlight units of the each row of the light source array in time-division.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: February 25, 2020
    Assignee: Innolux Corporation
    Inventors: Li-Wei Mao, Tai-Chieh Huang
  • Patent number: 10560992
    Abstract: An LED-based light includes one or more LEDs, a sensor arranged to detect a brightness level in an area resulting from the combination of light emitted by the LEDs with light from at least one ambient light source other than the LEDs, and operable to output a signal corresponding to the detected brightness level, a controller operable to regulate an amount of power provided to the LEDs in response to the signal, a light transmitting housing for the LEDs, the sensor and the controller and a connector shaped for connection with a light socket disposed at an end of the housing.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: February 11, 2020
    Assignee: iLumisys, Inc.
    Inventors: James R. Scapa, David L. Simon, John Ivey
  • Patent number: 10505082
    Abstract: Provided are a quantum dot light emitting diode and a manufacturing method. The quantum dot light emitting diode comprises: a pair of electrodes, arranged side by side and spaced; a flip chip light emitting diode, disposed on the electrodes and electrically connected to the electrodes; a quantum dot interlayer, disposed on the flip chip light emitting diode; a package layer, covering the electrodes, the flip chip light emitting diode and the quantum dot interlayer; and a whitening adhesive layer, surrounding the package layer. The quantum dot interlayer is disposed to isolate the invasion of the external water and oxygen to the quantum dot layer and the light emitting diode chip to form an environment, in which the quantum dots are isolated from water and oxygen.
    Type: Grant
    Filed: June 18, 2018
    Date of Patent: December 10, 2019
    Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yong Fan
  • Patent number: 10477640
    Abstract: A system and method involving lighting fixtures, a control network, a controller and other devices such as light sensors, input devices and network adapters for coordinating precise brightness and color schedules among the lighting fixtures while maintaining a high color reliability including provisions for managing a plurality of lighting fixtures. The lighting fixtures contain lighting elements selected such that when controlled properly, operating along a daytime locus, the resultant light output closely resembles sunlight on a cloudless day in spectral characteristics, and wherein the total flux of blue light can be adjusted from a relative level of 1-100% the maximum blue flux of the lighting fixture by controlling individual lighting elements.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: November 12, 2019
    Assignee: Delos Living LLC
    Inventors: Eric Jon Eisele, Adam K. Fontecchio, Donald Sheldon
  • Patent number: 10381531
    Abstract: A quantum dot LED and a manufacturing method for the same are disclosed. The quantum dot LED includes a pair of electrodes disposed separately and side by side; an LED chip disposed on the pair of electrodes and electrically connected to the pair of electrodes; a quantum dot layer disposed on the LED chip; a glue layer disposed on the quantum dot layer; and an inorganic encapsulation layer that packages and covers the pair of electrodes, the LED chip, the quantum dot layer and the glue layer. The present invention can provide a water and oxygen isolation environment, which is beneficial to increase the luminous efficiency and life of the quantum dots. Adopting an atomic layer deposition method to form the inorganic encapsulation layer, the surface is smooth and even in thickness, the problem of cracking of the film layer will not generate.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: August 13, 2019
    Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yong Fan
  • Patent number: 10314140
    Abstract: A lighting control device that controls a lighting device includes: a brightness sensor that obtains brightness information indicating a current brightness of an illuminated surface; a storage that stores a brightness target value for the illuminated surface; a controller; a receiver via which the controller receives an energy-saving signal; and a transmitter that transmits, to the lighting device, a control signal generated by the controller. When the energy-saving signal is not being received, the controller determines a dimming rate for the lighting device based on the brightness target value and the brightness information. When the energy-saving signal is being received, the controller determines an energy-saving brightness target value smaller than the brightness target value by multiplying the brightness target value by a predetermined rate and determines an energy-saving dimming rate for the lighting device based on the energy-saving brightness target value and the brightness information.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: June 4, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yoshinobu Murakami, Atsuo Nanahara
  • Patent number: 10260688
    Abstract: A lighting device having a first configuration wherein a first light source is exposed and a second light source is covered and a second configuration wherein the first light source is exposed and the second light source is exposed. The light device is enclosed in a rigid enclosure securing the lighting device in the second configuration. A power source is electrically coupled to the lighting device to provide power to the first light source and the second light source. A switch is coupled to the power source and the first and second light sources. The switch is configured to permit propagation of power from the power source to the second light source when the lighting device is in the second configuration.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: April 16, 2019
    Assignee: Alliance Sports Group, L.P.
    Inventors: Gregory Lee Horne, Jimmy Prieto
  • Patent number: 10213616
    Abstract: A light therapy device is provided that emits both blue spectrum wavelength light and cyan spectrum wavelength light stimulate intrinsically photosensitive Retinal Ganglion Cell (ipRGC) receptors located in a human eye. The light therapy device may be attached or secured in an area of or directly to a consumer device, such as a computer, or laptop, etc., so that a user operating the consumer device may utilize the consumer device and the light therapy device at the same time. Further, settings of the light therapy device may be controlled utilizing an application that may be executing on a computing device.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: February 26, 2019
    Assignee: Sun LifeLight, Inc.
    Inventors: Gary D. Grimard, Alison C. Todd
  • Patent number: 10148064
    Abstract: A semiconductor laser driving apparatus for driving a semiconductor laser serving as a light source for optical scanning, the semiconductor laser driving apparatus includes: first and second switching elements that are each capable of switching energization of the semiconductor laser ON/OFF; a first pulse generation unit that intermittently outputs first driving pulses to the first switching element in a first time slot; and a second pulse generation unit that outputs a second driving pulse to the second switching element in a second time slot different from the first time slot.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: December 4, 2018
    Assignee: RICOH COMPANY, LTD
    Inventors: Kohji Sakai, Masataka Uehira, Shigeaki Imai, Tadashi Nakamura
  • Patent number: 10104479
    Abstract: The present invention proposes a method for operating a hearing device 1 which prevents battery leakage, especially in the case when the hearing device 1 is powered by a mercury-free battery 2. The method comprises monitoring a supply voltage of at least one of a plurality of electronic units 7, 8, 9 of the hearing device 1, initiating a low battery leakage shutdown state when a low supply voltage condition is identified based on the monitoring, wherein the initiating a low battery leakage shutdown state includes activating at least one power gate 10 to disconnect at least one of the plurality of electronic units 7, 8, 9 from the power supply when entering the low battery leakage shutdown state, and discharging a buffer capacitor 4 provided for stabilizing the battery voltage. Moreover, a hearing device 1 optimized for being powered by a mercury-free battery 2 is provided.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: October 16, 2018
    Assignee: Sonova AG
    Inventors: Fethi Cherigui, Jürg Sudan
  • Patent number: 9769904
    Abstract: A light-emitting device includes an autotransformer, a circuit module and a light-emitting module. The autotransformer includes a first positive conductive wire for receiving a first input voltage within a first predetermined voltage range, a second positive conductive wire for receiving a second input voltage within a second predetermined voltage range, and a common negative conductive wire electrically mated to the first positive conductive wire and the second positive conductive wire. The first predetermined voltage range is larger than the second predetermined voltage range. The circuit module includes a driver electrically connected to the autotransformer, and a predetermined operating voltage value for driving the driver is substantially within the second predetermined voltage range. The light-emitting module is electrically connected to the driver.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: September 19, 2017
    Assignee: LITE-ON TECHNOLOGY CORPORATION
    Inventors: Chien-Lung Wang, Shih-Chang Wang, Po-Chang Li, Li-Po Chang
  • Patent number: 9750110
    Abstract: Provided is a sensor system for an outdoor lighting system including at least one sensor physically connected with an external connector of a lighting fixture of the outdoor lighting system. The sensor performs sensing and wireless data and power connection, via a wireless power source and a wireless data source, with the outdoor lighting system.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: August 29, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Roland Batai, Gleb Geguine, Francois Giguere
  • Patent number: 9698574
    Abstract: In one embodiment, an igniter circuit may include a circuit to determine if the current through a load switch exceeds a threshold value, and to responsively disable a second switch that couples DC power to the igniter circuit.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: July 4, 2017
    Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
    Inventors: Yasunori Yamamoto, Mikio Yamagishi
  • Patent number: 9642209
    Abstract: A system and method involving lighting fixtures, a control network, a controller and other devices such as light sensors, input devices and network adapters for coordinating precise brightness and color schedules among the lighting fixtures while maintaining a high color reliability including provisions for managing a plurality of lighting fixtures. The lighting fixtures contain lighting elements selected such that when controlled properly, operating along a daytime locus, the resultant light output closely resembles sunlight on a cloudless day in spectral characteristics, and wherein the total flux of blue light can be adjusted from a relative level of 1-100% the maximum blue flux of the lighting fixture by controlling individual lighting elements.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: May 2, 2017
    Assignee: DELOS LIVING, LLC
    Inventors: Eric Jon Eisele, Adam K. Fontecchio, Donald Sheldon
  • Patent number: 9358360
    Abstract: In an illumination apparatus, a control unit starts lighting of a light source at a first time before a wake-up set time and executes a first control pattern to increase a dimming ratio of the light source from the first time to a second time determined based on the wake-up set time and a second control pattern to further increase the dimming ratio of the light source from the second time to a third time determined based on the wake-up set time. When a change curve of the dimming ratio in the first control pattern and the second control pattern is applied to a function represented by the equation: Y(t)=d+(a?d)/(1+(t/c)b), the time c becomes closer to the second time than the first time in the first control pattern, and becomes closer to the second time than the third time in the second control pattern.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: June 7, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Naohiro Toda, Kazuhiro Hatta
  • Patent number: 9320114
    Abstract: A lighting controller comprising a control module is disclosed. The control module transmits electrical current to various sets of lights in accordance with scheduling data for each set of lights. The scheduling data may include start data and stop data for each set of lights.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: April 19, 2016
    Assignee: Orbit Irrigation Products, Inc.
    Inventors: Kent C. Ericksen, Stuart Eyring, Karl L. Connolly, Landon T. Gwilliam, Brad Wardle
  • Patent number: 9313836
    Abstract: A light bulb assembly comprises an electrical connection module, a driver circuit configured to provide electrical energy at a drive voltage, and a light source. The driver circuit converts electrical energy at an input voltage to the electrical energy at the drive voltage. A controller is configured to control the power converter to provide electrical energy at the drive voltage. The controller stops operation at an interruption of electrical energy to the driver circuit. The controller is configured to resume operation subsequent restoration of electrical energy to the driver circuit. The controller is configured to maintain the timing voltage above a first voltage level when the controller is in operation and to determine the duration of an interruption of electrical energy to the driver circuit.
    Type: Grant
    Filed: December 18, 2014
    Date of Patent: April 12, 2016
    Assignee: Dialog Semiconductor GmbH
    Inventor: Horst Knoedgen
  • Patent number: 9307615
    Abstract: Lighting control systems, control modules for contactors, and methods of operating a lighting control system are described. In one example, a control module for a lighting contactor includes a controller, a power supply, and a control mode selector. The controller is configured to control operation of a lighting contactor in response to at least one control signal. The controller is selectively operable in a plurality of control modes. The power supply is configured to receive the at least one control signal and provide power to the controller. The control mode selector is coupled to the controller and operable to operate the controller in a selected control mode of the plurality of control modes.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: April 5, 2016
    Assignee: General Electric Company
    Inventors: Daniel E. Civiello, David James Lesslie, Craig Benjamin Williams, Jeyaprakash Kandasamy, Babu Chinnasamy
  • Patent number: 9300930
    Abstract: A scanning projector includes a brightness compensation component. The brightness compensation component modifies pixel brightness as a function of instantaneous scan phase of a sinusoidally scanning mirror. The brightness compensation component uses different brightness compensation functions based on whether the instantaneous scan phase is above or below a threshold. The threshold may correspond to a knee of a maximum laser power limit curve.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 29, 2016
    Assignee: Microvision, Inc.
    Inventors: P. Selvan Viswanathan, Markus Duelli
  • Patent number: 9253851
    Abstract: This invention relates to an auto configuring runway lighting system. The auto configuring runway lighting system comprises a plurality of lighting apparatus. Each lighting apparatus comprises a means for determining geographic location information of the lighting apparatus. A central controller communicates with the plurality of lighting apparatus to obtain the geographic location information and controls the status of the plurality of lighting apparatus based on the geographic location information.
    Type: Grant
    Filed: November 28, 2012
    Date of Patent: February 2, 2016
    Assignee: BWT Property, Inc.
    Inventors: John Michael Hoffer, Jr., Sean Xiaolu Wang
  • Patent number: 9176314
    Abstract: A system and methods for automatically setting light intensity for covert operations are presented. Infra-red light is transmitted from at least one infra-red light source, and external ambient light is sensed substantially continually from at least one ambient light sensor coupled to a vehicle exterior to provide sensed ambient light. A sensed intensity of the sensed ambient light is compared to a sensitivity of a night vision goggles to provide a power adjustment value. An intensity level of the at least one infra-red light is controlled based on the power adjustment value such that the external ambient light is provided at a substantially optimal light level for the night vision goggles.
    Type: Grant
    Filed: May 20, 2012
    Date of Patent: November 3, 2015
    Assignee: The Boeing Company
    Inventor: Mark Alan Hartwell
  • Patent number: 9173273
    Abstract: In order to control of dimming of solid state lighting devices (SSL) a driver circuit drives the SSL subject to an input voltage using a phase-cut dimmer. The driver circuit comprises a transistor operable in two modes, either alternating between on/off states or continuously controlling a current through the transistor. A power converter network provides a switched-mode power converter in conjunction with the transistor when operated in the first mode generating a drive voltage for the SSL. The control unit controls the transistor to selectively operate in one of the two modes; to control the transistor to determine that the input voltage exceeds an input voltage threshold; and to control a drive current through the SSL based on a measurement of a phase-cut angle thereby controlling an illumination level of the SSL device.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: October 27, 2015
    Assignee: Dialog Semiconductor GmbH
    Inventors: Stefan Zudrell-Koch, Nebojsa Jelaca
  • Patent number: 9173261
    Abstract: A single magnetic storage element is used to provide power to multiple lighting devices, which may be strings of light-emitting diodes (LEDs) of different color. A switching circuit controls alternating application of energy among the multiple lighting devices and another switching circuit may charge the primary winding to different energy levels to control the intensity of the multiple lighting devices. In particular, the multiple lighting devices may be controlled to provide a desired color profile while dimming the lighting devices, while requiring only a single magnetic storage element for supplying energy to the lighting devices.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: October 27, 2015
    Inventors: Wesley L. Mokry, John L. Melanson
  • Patent number: 9167217
    Abstract: A scanning laser projector drives laser light sources with waveforms for higher efficiency. Optical light power values for pixels are mapped to amplitude/duration pairs. Laser diodes are driven with electrical currents having the amplitude for time period specified by the duration. For increasing optical light power values, amplitude values are increased, and then durations are increased.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: October 20, 2015
    Assignee: Microvision, Inc.
    Inventors: Scott Woltman, Robert James Jackson, Christopher Brian Adkins
  • Patent number: 9161410
    Abstract: A pulse width modulation control unit multiplies a value of a user side setting signal by a value of a dimming signal to obtain a pulse width modulation output current control signal. The pulse width modulation control unit sends the pulse width modulation output current control signal to a light emitting diode driving unit. The light emitting diode driving unit multiplies a value of the pulse width modulation output current control signal by a value of a maximum output current of the light emitting diode driving unit to obtain a light emitting diode pulse width modulation driving current. The light emitting diode driving unit drives a light emitting diode by the light emitting diode pulse width modulation driving current.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: October 13, 2015
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Chao-Wei Tsai, Jyun-Ping Wang, Hung-Ta Shih
  • Patent number: 9137859
    Abstract: An LED module includes a light-emitting unit composed of a plurality of LEDs connected in series to one another, a sensor unit, a power interrupt circuit inserted into a power supply path through which the light-emitting unit is supplied with power from an external power source, and a control circuit that controls the power interrupt circuit according to output of the sensor unit. The LED module further includes a secondary battery and a voltage supply circuit. The voltage supply circuit supplies the control circuit with voltage equivalent to voltage drop between the ends of a group of LEDs included in the plurality of LEDs that constitute the light-emitting unit while the external power source is supplying power to the light-emitting unit, and supplies the control circuit with voltage output from the secondary battery while power interrupt circuit is interrupting the power from the external power source to the light-emitting unit.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: September 15, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Kei Mituyasu, Katunobu Hamamoto, Koji Saeki
  • Patent number: 9137877
    Abstract: Embodiments relate to controlling a lighting control according to at least one of received signal strength indication (RSSI) and a preset lighting mode. Brightness or/and color temperature of the lighting device may be automatically controlled to two or more levels according to the RSSI and a user's taste. A switch application of the lighting device using the RSSI is operated to facilitate a control by a user, and On/Off or/and brightness of the lighting device are controlled according to the RSSI.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: September 15, 2015
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Dae Hun Kim
  • Patent number: 9035565
    Abstract: The invention relates to a method for operation of an actively clocked PFC circuit with a directly or indirectly connected load circuit at the output of the PFC circuit, wherein the load circuit has a lighting means, in particular one or more LEDs, wherein the PFC circuit is supplied at least with a measurement signal which reflects the power consumption of the load circuit or with an external control signal which indicates the power consumption, and a control circuit adjusts the mode of operation of the PFC circuit continuously or preferably in two or more steps, depending on the control signal or measurement signal.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: May 19, 2015
    Assignee: Tridonic GmbH & Co. KG
    Inventors: Michael Zimmermann, Dominique Combet
  • Patent number: 9030130
    Abstract: From a start of a lighting until a predetermined time period passes, a high-pressure discharge lamp is supplied with a constant current (Ib) until the lamp power reaches a predetermined wattage (Plow). When the lamp power reaches the wattage (Plow), current is supplied to maintain the lamp power at the wattage (Plow). After another predetermined time period passes, current is supplied to maintain the lamp power at a rated lamp wattage (Pr). While this lamp power is being maintained, the size of the lamp current is limited to a current limit (Ia). The current (Ib) and the wattage (Plow) satisfy a relationship Ia·0.7?Ib?Ia·0.9 and Pr·0.5 Plow?Pr·0.9 to accelerate an initial building of luminous flux while reducing drainage to the electrodes.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: May 12, 2015
    Assignee: Panasonic Corporation
    Inventors: Masahiro Yamamoto, Syunsuke Ono
  • Patent number: 9024545
    Abstract: An independently functioning or centrally controlled wall light switch is configured to operate in normal mode and a Jewish holiday mode wherein the state of the light is fixed, regardless of the user's physical manipulation of the light switch. The control system automatically activates holiday mode by combining a geographically determined Jewish religious clock executed by software and hardware that utilizes the current time, date and geographical location of the apparatus in accordance with the Jewish definition of time and laws for calculating numerous religiously significant shifting daily points in time. The control system further incorporates several energy saving and preference modes by utilizing a particular day's calculated religious points in time in conjunction with holiday behavior patterns common to most Jewish families to provide the user with a greatly simplified means of programming an automatically adjusting on/off light timer and dimming overlay functionality during holiday mode.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: May 5, 2015
    Assignee: United Electric Systems Corp.
    Inventors: Yonason Bloch, Herbert Klein
  • Patent number: 9024541
    Abstract: A power distribution system includes controller of a switching power converter to control the switching power converter and determine one or more switching power converter control parameters. In at least one embodiment, the switching power converter utilizes a transformer to transfer energy from a primary-side of the transformer to a secondary-side of the transformer. In at least one embodiment, the switching power converter control parameters includes a secondary-side conduction time delay that represents a time delay between when the primary-side ceases conducting a primary-side current and the secondary-side begins to conduct a secondary-side current. In at least one embodiment, determining and accounting for this secondary-side conduction time delay increases the prediction accuracy of the secondary-side current value and accurate delivery of energy to a load when the controller does not directly sense the secondary-side current provided to the load.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: May 5, 2015
    Assignee: Cirrus Logic, Inc.
    Inventors: Yanhui Xie, Michael A. Kost, John L. Melanson, Zhaohui He, Chris M. Franklin
  • Patent number: 9024533
    Abstract: A switching current regulator controls a load current flowing through a load. The switching current regulator switches a switch to an ON state after applying a regulating signal to the switch. During an integration period while the switch is in the ON state, the switching current regulator integrates an output voltage based on a sense voltage based on the load current and a reference voltage; at the end of the integration period, the switching current regulator outputs an integrated output voltage. The switching current regulator compares the integrated output voltage to a predetermined value. Based on a result of comparing the integrated output voltage and the predetermined value, the switching current regulator adjusts the regulating signal.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: May 5, 2015
    Assignee: Atmel Corporation
    Inventors: Juergen Gossehelweg, Ingo Ruhm
  • Publication number: 20150115845
    Abstract: A method of illuminating livestock with artificial light sources. The method includes generating a first light having a first light output that provides white light at typical lumen levels for workers. Then by using a dimming device the light source can be dimmed to provide a blue light at under 3 lumen in order to provide artificial light to the diurnal avians representative of moonlight to cause the occurrence of a predetermined characteristic visual spectral response of the diurnal avian substantially enclosed habitat for diurnal avians.
    Type: Application
    Filed: November 3, 2014
    Publication date: April 30, 2015
    Inventor: Zdenko Grajcar
  • Publication number: 20150115801
    Abstract: A programmable light timer for implementing a timing pattern is described. The programmable light timer comprises a memory storing a plurality of timing patterns, each timing pattern being associated with a unique timing pattern code and having one or more on/off settings for a time period; and a user interface enabling the selection of a timing pattern code associated with a timing pattern of the plurality of timing patterns.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Inventor: John Joseph King
  • Patent number: 9018854
    Abstract: A system for generating light with reduced physioneural compression. The system includes a first light source operable to emit light within a first wavelength range corresponding to a first photoreceptor and a second light source operable to emit light within a second wavelength range corresponding to a second photoreceptor. The system includes a controller functionally coupled to each of the first light source and the second light source. The controller is configured to alternately operate one of the first light source and the second light source with a duty cycle that is less than a response time of the visual cortex, but greater than a response time of physioneural cells, optionally including a latency between operation of light sources. The system may further include a third light source corresponding to a third photoreceptor.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: April 28, 2015
    Assignee: Biological Illumination, LLC
    Inventors: Fredric S. Maxik, David E. Bartine, Robert R. Soler, Eliza Katar Grove, Matthew Regan
  • Patent number: 9013116
    Abstract: An LED (Light Emitting Device) light source (100), a pulse controller or pulse control module (130) for an LED light source, and a method are provided, for controlling relative timing and phase of LED light pulse generation and operation of peripheral devices, relative to a common timing reference. A system is provided comprising a pulse controller (130) for controlling synchronization of multiple LEDs (144) and/or other devices and peripherals (164), relative to a common timing reference. The pulse controller (130) comprises a processor (131) that programmatically executes a time based sequence of digital control signals (141) from received inputs (121) indicative of a pulse generation sequence.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: April 21, 2015
    Assignee: Excelitas Canada, Inc.
    Inventors: Thomas Blair Porter, Stewart Andrew Clark
  • Patent number: 9013115
    Abstract: A power supply circuit (4) is responsive to an activating signal by supplying a discharge lamp (2) with an operating voltage on which a high voltage is temporality superposed. An insufficient current detecting circuit (46) detects abnormality of an output current supplied to the discharge lamp (2) from the power supply circuit (4). A CPU (52) stops the operation of the power supply circuit (4) in response to detection of abnormality by the insufficient current detecting circuit (46). An output nullification time period timer (50) nullifies the output of the insufficient current detecting circuit (46) for a predetermined time period measured from the supplying of the activating signal.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: April 21, 2015
    Assignee: Sansha Electric Manufacturing Company, Limited
    Inventors: Tatsuya Kawabata, Hiroki Morimoto
  • Patent number: 9006992
    Abstract: Various apparatuses and methods for starting a thyristor are disclosed herein. For example, some embodiments provide an apparatus for controlling power to a load. The apparatus includes a thyristor, a secondary load switchably connected to an output of the thyristor, and a sensor connected to the secondary load. The sensor is adapted to connect the secondary load to the thyristor when the output of the thyristor falls below a predetermined level.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: April 14, 2015
    Assignee: InnoSys, Inc.
    Inventors: Laurence P. Sadwick, William B. Sackett
  • Patent number: 9006978
    Abstract: A driving circuit with an over-voltage protection device for modulating an electrical parameter of a driven device includes at least a boost circuit, a signal processing circuit, an over-voltage protection device, a modulation device and a control circuit. The output terminal of the boost circuit is electrically coupled in series to a driven device, a transistor and a grounded feedback resistor sequentially, wherein the output terminal of the boost circuit is further electrically coupled to a voltage dividing circuit for outputting a voltage dividing signal. The signal processing circuit is provided for outputting a processing signal to the over-voltage protection device and the modulation device according to the voltage dividing signal and a modulation signal. The control circuit is provided for turning on the transistor or not according to an output signal of the over-voltage protection device and an output signal of the modulation device.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 14, 2015
    Assignee: Power Forest Technology
    Inventors: Po-Jen Ke, Yang-Tai Tseng
  • Patent number: 9000686
    Abstract: It is provided an LED lighting device calibratable to 0 to 100% of wide range about a chromaticity and luminance of a illumination light by a simple configuration, and a driving method for the LED lighting device. The LED lighting device is provided with a first light-emitting unit and a second light-emitting unit differing a color temperature mutually, and a control circuit for executing a cyclic light/quench control of the first light-emitting unit and the second light-emitting unit, and for executing a light control of the first light-emitting unit and the second light-emitting unit by a PNM (Pulse Number Modulation) control in a fixed cycle so as to have a lighting period Ton for lighting/quenching the first light-emitting unit and the second light-emitting unit complementarily, and a quenching period Toff for quenching both the first light-emitting unit and the second light-emitting unit.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: April 7, 2015
    Assignee: Rohm Co., Ltd.
    Inventor: Jun Mizuno
  • Patent number: 8994280
    Abstract: A driving circuit includes a first PWM driving module and a second PWM driving module. The first PWM driving module generates a first square-wave signal to drive a first illumination unit according to a first data signal of a data stream, wherein the first square-wave signal, having a rising edge located at the beginning of the display cycle, represents an illumination period of the first illumination unit in a display cycle. The second PWM driving module generates a second square-wave signal to drive a second illumination unit according to a second data signal of the data stream, wherein the second square-wave signal, having a falling edge located at the end of the display cycle and having a rising edge being behind the rising edge of the first square-wave signal, represents an illumination period of the second illumination unit in the display cycle.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 31, 2015
    Assignee: Princeton Technology Corporation
    Inventors: Ching-Piao Su, Chiung-Hung Chen, Chien-Te Hsu
  • Patent number: 8994278
    Abstract: A device serves to control an electrical load of at least two single loads connected in series. Each of the at least two single loads is connected in parallel to a controllable switch, so that each of the at least two single loads can be switched independently of one another. In addition, a driver stage that drives a current into the electrical load is present. The controllable switches can be controlled by the control unit. A dummy load is connected in series to the at least two single loads.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: March 31, 2015
    Assignee: Lear Corporation GmbH
    Inventors: Klaus-Dieter Grebner, Michael Reier
  • Publication number: 20150084524
    Abstract: A lighting system comprising a light source, a controller operably coupled to the light source, and a timekeeping device operably coupled to the controller. The controller is configured to receive a selected action time associated with an agricultural product. The agricultural product includes an associated circadian rhythm defining an optimal action time range. The controller is configured to determine a lighting schedule responsive to the selected action time, the optimal action time range, and a time of day indicated by the timekeeping device, the lighting schedule being configured to impose a circadian rhythm on the agricultural product to shift the optimal action time range such that the selected action time coincides with the optimal action time range. The controller is configured to operate the light source according to the lighting schedule.
    Type: Application
    Filed: September 16, 2014
    Publication date: March 26, 2015
    Applicant: BIOLOGICAL ILLUMINATION, LLC
    Inventors: Fredric S. Maxik, Robert R. Soler, David E. Bartine, Eliza Katar Grove, Neil Yorio, Anthony Crawford
  • Patent number: 8988014
    Abstract: A wake-up system includes an illumination apparatus and an interface apparatus. A wake-up time is input to the interface apparatus. The illumination apparatus varies output and color temperature of wake-up light that it irradiates. The output of the irradiated wake-up light is increased from a wake-up operation start time to the wake-up time. Color temperature of the wake-up light is controlled to become higher in one period than in another period between the wake-up operation start time to the wake-up time.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: March 24, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Naohiro Toda, Hiroki Noguchi
  • Patent number: 8988006
    Abstract: A projector includes: a discharge lamp; a discharge lamp driving unit that drives the discharge lamp by supplying a driving power to the discharge lamp through supply of a driving current thereto; and a control unit that controls the discharge lamp driving unit based on plural operating modes in which maximum values of the driving power are different from one another, wherein the control unit switches the operating mode through a transition period and controls the discharge lamp driving unit so that an average value of a frequency of the driving current in the former half of the transition period becomes larger than an average value of a frequency of the driving current in the latter half of the transition period.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: March 24, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Tetsuo Terashima, Shun Sato
  • Patent number: 8988008
    Abstract: A system and method for controlling the dimming of a lighting element, or other electrical load, that uses a timer synchronized to the AC waveform is disclosed. The timer is set up to repeatedly count at a rate equal to twice the frequency of the AC waveform. An output from the timer logic is asserted when the timer value exceeds a predetermined value, stored in a compare register. This output is connected to the gate of a triac, which controls the passage of current from the AC power source to the electrical load. A capture register is used to determine the temporal relationship between the restart of the timer and the AC waveform. This system and method reduces the real time requirements of an associated processing unit, and improves consistency, thereby reducing flicker.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 24, 2015
    Assignee: Silicon Laboratories Inc.
    Inventor: DeWitt C. Seward, IV
  • Patent number: 8981661
    Abstract: A circuit for powering high-efficiency lighting devices from a thyristor-controlled dimmer operates a switching power circuit during active portions of half-cycles of the AC line voltage source that supplies the dimmer. A control circuit determines the durations of the active portions such that sufficient energy is transferred to operate the lighting devices until a next half-cycle of the AC line voltage, at which time the active portion of the half-cycle is terminated. A high impedance level is presented to the output of the dimmer until the next half-cycle commences.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: March 17, 2015
    Assignee: Cirrus Logic, Inc.
    Inventors: John L. Melanson, Eric King
  • Publication number: 20150061546
    Abstract: A programmable timer for controlling two outlets that may be switched on and off in response to a programmed schedule where said programmable timer comprises an input device, a microprocessor, two switches and two outlets.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Michael STACK, Grady SCHENCK, Eric CHEN