Patents Examined by Thai Pham
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Patent number: 11369013Abstract: The present disclosure provides lighting systems suitable for generating white light. The lighting systems can have a first lighting channel configured to produce a first white light having a first color point and a first spectral power distribution, a second lighting channel configured to produce a second white light having a second color point and a second spectral power distribution, and a control system configured to independently change the intensity of each of the first lighting channel and the second lighting channel. The first lighting channels can have LEDs having an emission with a first peak wavelength of between about 440 nm and about 510 nm. The second lighting channels can have LEDs having an emission with a second peak wavelength of between about 380 nm and about 420 nm. The disclosure provides methods of generating white light using the lighting systems described.Type: GrantFiled: November 3, 2020Date of Patent: June 21, 2022Assignee: KORRUS, INC.Inventors: Raghuram L. V. Petluri, Paul Kenneth Pickard
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Patent number: 11363695Abstract: The specification discloses a flashing lamp circuit including (1) at least one LED, (2) a dual-BJT astable multivibrator, and (3) a BJT/MOSFET pair that functions as both (a) a switch between the multivibrator and the lamp and (b) a current regulator for the at least one LED.Type: GrantFiled: November 14, 2018Date of Patent: June 14, 2022Assignee: Innotec, Corp.Inventor: Thomas J. Veenstra
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Patent number: 11363696Abstract: The application relates to an over-temperature protection circuit of an LED driving power supply. The over-temperature protection circuit comprises a temperature detection circuit for sensing a temperature change; a switch control circuit connected to the output end of the temperature detection circuit and controlling the on-off of the circuit according to the output signal of the temperature detection circuit; a shunt circuit connected to an output end of the switch control circuit and shunting current when the switch control circuit is in an on state; a current detection circuit connected to an output end of the shunt circuit and changing a current detection signal according to an output current of the shunt circuit; the output end of the current detection circuit is connected with the feedback loop. The application has the advantages of low cost, stable performance, little environmental influence and high precision.Type: GrantFiled: April 1, 2019Date of Patent: June 14, 2022Assignee: SHENZHEN SOSEN ELECTRONICS CO., LTDInventors: Jiansheng Chen, Ping Dai, Chaoyang Zou
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Patent number: 11363694Abstract: A drive circuit 3 includes a power source 11; current control units 12-1 to 12-n configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unit 13 configured to change a duty ratio of a pulse modulation signal. The current control units 12-1 to 12-n include a first switching element 21 configured to be switched on/off in accordance with a pulse modulation signal; and a second switching element 22 configured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element 21; and an inductor 23. The first switching element 21 and the inductor 23 are serially connected between the power source and the light emitting element. The second switching element 22 is connected between ground 25 and a contact point 24 of the first switching element 21 and the inductor 23. The two or more current control units 12-1 to 12-n are connected in parallel.Type: GrantFiled: July 28, 2021Date of Patent: June 14, 2022Assignees: RICOH COMPANY, LTD., KYUSHU INSTITUTE OF TECHNOLOGYInventors: Tsuyoshi Ueno, Yuuki Oka, Tetsuya Satoh, Seiya Abe
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Patent number: 11355833Abstract: According to an aspect, a wireless communication device is wearable on a living body. The wireless communication device includes an antenna and an attachment. The antenna has a first conductor, a second conductor, at least one third conductor, a fourth conductor, and a feeding line. The first conductor and the second conductor are opposed to each other in a first axis. The third conductor is positioned between the first conductor and the second conductor. The third conductor extends in the first axis. The fourth conductor extends in the first axis. The feeding line is electromagnetically connected to any one of at least one third conductor. The first conductor and the second conductor are capacitively connected to each other through the third conductor. The attachment allows the fourth conductor to be opposed to the living body.Type: GrantFiled: November 2, 2018Date of Patent: June 7, 2022Assignee: KYOCERA CORPORATIONInventors: Nobuki Hiramatsu, Hiroshi Uchimura, Masato Fujishiro, Hiroshi Yamasaki, Shotaro Sugita, Takahiro Watanabe
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Patent number: 11350505Abstract: A semiconductor light source includes multiple light-emitting elements coupled in series. A driving circuit receives an input voltage, and supplies a driving current to the semiconductor light source. A bypass circuit is coupled to a part of the multiple light-emitting elements. When a low-voltage state occurs, the bypass circuit is set to the enabled state, thereby bypassing the driving current. An auxiliary power supply circuit is coupled in series with the part of the multiple light-emitting elements. When an expected current does not flow through the auxiliary power supply circuit after the bypass circuit is set to the disabled state, a judgement unit judges that an open-circuit fault has occurred in the part of the multiple light-emitting elements.Type: GrantFiled: February 11, 2021Date of Patent: May 31, 2022Assignee: KOITO MANUFACTURING CO., LTD.Inventor: Tomoyuki Ichikawa
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Patent number: 11343888Abstract: Discussed herein are systems, devices, methods, and computer-readable media for reducing a number of undriven or underdriven uLEDs of a uLED die. A method can include identifying, by a controller of a micro light emitting diode (uLED) die, a dynamic series resistance (Rd) or forward voltage (Vf) of a uLED of the uLED die, selecting, by the controller and based on the identified Rd or Vf, a current level (IPWM_0) less than a maximum current level (IPWM_MAX) supplied by a uLED driver coupled to the uLED die, and causing, by the controller, current, at the selected current level, to be supplied to the uLED driver.Type: GrantFiled: December 15, 2020Date of Patent: May 24, 2022Assignee: Lumileds LLCInventors: Antonio Lopez Julia, Zhi Hua Song
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Patent number: 11343890Abstract: A control system for an LED array relies on defining a first and a second group of separately addressed LED pixels, with the first group including pixels with an average current no less than the current at a Q point and a second group including pixels with an average current less than the current at a Q point. An amplitude signal provided to the first group of separately addressed LED pixels is selectively modulated, while providing a DC mode 100% duty cycle. An amplitude signal provided to the second group of separately addressed LED pixels is fixed, and a modulated duty cycle is provided.Type: GrantFiled: August 19, 2020Date of Patent: May 24, 2022Assignee: Lumileds LLCInventors: Antonio Lopez Julia, Ronald Johannes Bonne, Zhi Hua Song
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Patent number: 11333340Abstract: A touch controller for an LED light string or light strip is disclosed. The touch controller includes a housing, an end cover connected with the housing, a liquid-sealed accommodating cavity being defined between the end cover and the housing, a printed circuit board positioned in the accommodating cavity, a light-emitting control circuit being arranged on the printed circuit board, a touch input unit positioned in the accommodating cavity, the touch input unit being electrically connected with the light-emitting control circuit, one part of the touch input unit being matched with the housing or the end cover, and when a touch behavior is applied to the part, matched with the touch input unit, of the housing or the end cover, a trigger signal is provided for the light-emitting control circuit through the touch input unit.Type: GrantFiled: August 11, 2020Date of Patent: May 17, 2022Assignee: CHANGZHOU JUTAI ELECTRONIC CO., LTD.Inventors: Jun Lin, Wei Huang, Chengqian Pan, Bin Chen
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Patent number: 11329396Abstract: An antenna package having a cavity structure is provided, wherein a cavity substrate having an accommodation portion formed therethrough is disposed on one surface of an antenna substrate having a signal processing element formed thereon, so as to prevent occurrence of deformation and breakage thereof in the process of mounting the antenna package. The provided antenna package having the cavity structure comprises: an antenna substrate, on the upper surface of which multiple radiation patches are formed and on the lower surface of which multiple signal processing elements are formed; and a cavity substrate which has an accommodation portion formed therethrough to receive the multiple signal processing elements and is disposed on the lower surface of the antenna substrate.Type: GrantFiled: October 18, 2018Date of Patent: May 10, 2022Assignee: AMOTECH CO., LTD.Inventors: Hyun Joo Park, Hyung Il Baek, Kyung Hyun Ryu, Se Ho Lee, Yun Sik Seo, Gwang Lyong Go, Han Ju Do
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Patent number: 11320103Abstract: Systems and methods for adaptive energy storage in an illumination system are disclosed herein. An example method includes (1) obtaining, by one or more processors, data stored at a memory of a illumination unit; (2) obtaining, by one or more processors, a temperature value from a temperature sensor; (3) analyzing, by one or more processors, the obtained data and the temperature value to determine a minimum capacitor voltage to operate LEDs in accordance with an illumination cycle; and (4) control, by one or more processors, a voltage controller to convert an input voltage to the voltage controller to the determined minimum capacitor voltage, wherein the voltage controller is configured to apply the determined minimum capacitor voltage to a capacitor.Type: GrantFiled: February 9, 2021Date of Patent: May 3, 2022Assignee: Zebra Technologies CorporationInventors: Joseph S. Slowik, Christopher P. Klicpera
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Patent number: 11324087Abstract: A method for driving a set of light emitting diodes (LEDs) may include receiving a write access frame by a driver via a bus configured for connection with a controller and the driver. The write access frame includes brightness information. The method may further include controlling, by the driver, the set of LEDs based on the brightness information and determining, by the driver, safety information while controlling the set of LEDs based on the brightness information. The method may further include outputting, by the driver and at the bus, the safety information to acknowledge receipt of the write access frame.Type: GrantFiled: December 23, 2020Date of Patent: May 3, 2022Assignee: Infineon Technologies AGInventors: Hans-Peter Kreuter, Christof Michenthaler, Franco Mignoli, Salvatore Sanna, Alfonso Nasciuti, Andrea Scenini
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Patent number: 11322857Abstract: A chip antenna module array includes a first chip antenna module including: a first solder layer disposed below a first dielectric layer; a first feed via disposed in the first dielectric layer; a first patch antenna pattern disposed above the first dielectric layer and having a first resonant frequency; and a first coupling pattern spaced apart from the first patch antenna pattern, and not vertically overlapping the first patch antenna pattern. The chip antenna module array includes a second chip antenna module including: a second solder layer disposed below a second dielectric layer; a second feed via disposed in the second dielectric layer; a second patch antenna pattern disposed above the second dielectric layer and having a second resonant frequency; and a second coupling pattern disposed above and vertically overlapping the second patch antenna pattern. The first and second chip antenna modules are disposed spaced apart on a connection member.Type: GrantFiled: March 18, 2020Date of Patent: May 3, 2022Assignee: Samsung Electro-Mechanics Co., Ltd.Inventors: Ju Hyoung Park, Young Sik Hur, Sung Yong An, Myeong Woo Han, Kyu Bum Han, Dae Ki Lim
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Patent number: 11316281Abstract: An antenna apparatus may include: a feed via; a patch antenna pattern electrically connected to the feed via; and coupling patterns spaced apart from the patch antenna pattern and spaced apart from each other. At least one of the coupling patterns may protrude in a direction in which the at least one of the coupling patterns is spaced apart from the patch antenna pattern.Type: GrantFiled: October 24, 2019Date of Patent: April 26, 2022Assignees: Samsung Electro-Mechanics Co., Ltd., Research & Business Foundation Sungkyunkwan UniversityInventors: Myeong Woo Han, Dae Ki Lim, Keum Cheol Hwang, Sung Woo Lee, Jeong Ki Ryoo
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Patent number: 11306887Abstract: Systems and methods for an adaptive power drive in an illumination system are disclosed herein. An example method includes (1) analyzing, by one or more processors data in a memory to determine a configuration of one or more LEDs; (2) obtaining, by one or more processors, illumination control instructions for operating the one or more LEDs during one or more illumination cycles; (3) controlling, by one or more processors, one or more switches of an illumination unit in accordance with illumination control instructions; (4) determining, by one or more processors, a current requirement for operating the one or more LEDs in accordance with the illumination control instructions; and (5) setting, by one or more processors, a current control set point of an LED driver to the current requirement.Type: GrantFiled: February 8, 2021Date of Patent: April 19, 2022Assignee: Zebra Technologies CorporationInventors: Joseph S. Slowik, Christopher P. Klicpera
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Patent number: 11297702Abstract: A dimmer interface circuit includes a buffer stage circuit and a PWM control circuit. The buffer stage circuit converts a dimming input signal to a dimming buffer signal. The buffer stage circuit includes: a power rail generation circuit, which generates a power rail according to the dimming input signal adaptively, so that the dimming input signal is between a high level voltage and a low level voltage of the power rail; and an amplification circuit, which receives the dimming input signal, to generate the dimming buffer signal. The power rail supplies electrical power to the amplification circuit, wherein the amplification circuit operates within a range between the high level voltage and the low level voltage. The PWM control circuit converts the dimming buffer signal to a PWM dimming signal, so as to adjust a brightness of an LED module.Type: GrantFiled: September 30, 2020Date of Patent: April 5, 2022Assignee: RICHTEK TECHNOLOGY CORPORATIONInventors: Yu-Wen Chang, Leng-Nien Hsiu, Isaac Y. Chen
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Patent number: 11291145Abstract: An antenna device may include an antenna element, a planar grounding element, a first connecting element, and a second connecting element. The antenna element includes a radiator arm, a shorting arm, and a feeder arm, the shorting arm and the feeder arm being coplanar to and extending from a first edge of the radiator arm, the feeder arm extending parallel to the shorting arm. The first connecting element connects the shorting arm of the antenna element to the planar grounding element to position the antenna element and the planar grounding element in separate parallel planes. The second connecting element extends from and perpendicular to the feeder arm of the antenna element.Type: GrantFiled: May 29, 2019Date of Patent: March 29, 2022Assignee: Hewlett Packard Enterprise Development LPInventors: Kuanyue Li, Hongli Zhang, Yuhai Guo
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Patent number: 11289916Abstract: A lighting system has a set of multiple LED luminaires, and combines solar panel power and external grid power. A solar converter converts the output from the solar panel into a first power. Each luminaire is associated with a driver to inject current into the LED lighting unit from the external grid power supply. The LED lighting units of the luminaires are connected together to the solar converter and are thereby driven together by the first power simultaneously. This simplifies the structure.Type: GrantFiled: January 28, 2019Date of Patent: March 29, 2022Assignee: SIGNIFY HOLDING B.V.Inventors: Goutam Maji, Priya Ranjan Mishra, Srikanth Tunga
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Patent number: 11287724Abstract: An automatic illumination control apparatus for adjusting an output of an illumination device depending upon a distance between a subject and the illumination device, includes: a distance measuring sensor installed at a position close to the illumination device to measure distance information between the illumination device and the subject; and an illumination managing unit configured to generate a management signal including an illumination intensity of illumination which is outputted from the illumination device according to the distance information, and send the management signal to the illumination device. With the present invention, even though the subject comes toward or away from the main illumination device and thus the distance between the subject and the illumination is changed, the illumination intensity indicative of the subject and the space around the subject and the color temperature can be constantly maintained, thereby obtaining the still picture or the motion picture with constant quality.Type: GrantFiled: October 19, 2017Date of Patent: March 29, 2022Assignee: HYUNDAI FOMEX CO., LTD.Inventor: Jae Kyun Yoo
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Patent number: 11291100Abstract: A lamp driver circuit for driving a lamp is provided. The lamp driver circuit includes: an under voltage protection circuit; a control circuit coupled to the under voltage protection circuit; and a driver transistor coupled to the control circuit for driving the lamp under the control of the control circuit. The under voltage protection circuit detects an operation voltage. When the operation voltage is lower than a threshold, the under voltage protection circuit outputs an enable signal. The control circuit receives the enable signal to shut down the control circuit and shut down the driver transistor.Type: GrantFiled: March 31, 2021Date of Patent: March 29, 2022Assignee: Qisda CorporationInventor: Chih-Hsiang Wu