专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11057594B2 Light emission control device, light source device, and projection-type video display device 有权
公开(公告)号：US11057594B2
公开(公告)日：2021-07-06
申请号：US16879890
申请日：2020-05-21
申请人： Seiko Epson Corporation
发明人： Yuki Yamamoto
IPC分类号： H04N9/31 , H05B41/295 , H05B39/09 , H05B41/28 , H05B41/34 , H05B41/392
摘要： A light emission control device controls a first switching element of a light source circuit including a first resistor, a light emitting element, and the first switching element coupled in series between a first power supply node and a second power supply node set to a lower potential than the first power supply node. The light emission control device includes a second detection circuit that compares a first potential difference between both ends of the first resistor with a determination value, a light emission control circuit that outputs a first control signal that controls on/off of the first switching element, and a logic determination circuit that determines whether or not the first switching element is short-circuited. The light emission control circuit sets the first control signal to a first drive stoppage state that inactivates the first control signal, and when the second detection circuit has detected that the first potential difference is larger than the determination value, the logic determination circuit outputs an error signal.

2. 发明授权

US10375808B2 Discharge lamp drive device, light source device, projector, and discharge lamp drive method 有权
公开(公告)号：US10375808B2
公开(公告)日：2019-08-06
申请号：US16135274
申请日：2018-09-19
申请人： SEIKO EPSON CORPORATION
发明人： Junichi Suzuki , Masaru Kono
IPC分类号： H05B41/28 , H05B41/38 , H05B41/282 , H04N9/31 , G03B21/20 , H05B41/288
摘要： A discharge lamp drive device includes a discharge lamp driver adapted to supply a drive current to a discharge lamp, a control section adapted to control the discharge lamp driver, and a storage section adapted to store a plurality of drive patterns of the drive current. Each of the drive patterns has a plurality of drive parameters. The plurality of drive patterns includes a first drive pattern and a second drive pattern different from each other in a value of at least one of the plurality of drive parameters. The control section is configured to execute the first drive pattern and the second drive pattern in accordance with at least one of accumulated lighting time of the discharge lamp and an individual of the discharge lamp in a case in which an inter-electrode voltage of the discharge lamp is at a predetermined voltage value.

3. 发明授权

US10244609B2 Power line communication for lighting systems 有权
公开(公告)号：US10244609B2
公开(公告)日：2019-03-26
申请号：US15214273
申请日：2016-07-19
申请人： OSRAM SYLVANIA Inc.
发明人： Bernhard Siessegger
IPC分类号： H05B37/02 , H05B33/08 , H05B41/28 , H04B3/54
摘要： Techniques are provided for bi-directional communication between a power supply and one or more light engines (and/or other lighting system components) via the existing power lines so that no additional communication wires are needed. In particular, the power supply can transmit information by modulating its output (voltage or current) and the light engine (or other lighting componentry, such as a sensor) can communicate back by modulating how much power it draws from the power supply. Any suitable type of modulation scheme can be used, and a master-slave arrangement can be used to control the bi-directional communication if so desired, so as to avoid multiple devices communicating over the power line communication channel at the same time. Other embodiments allow a multiple simultaneous communications over the power line communication channel.

4. 发明申请

US20180317307A1 UP AND DOWN CONVERSION SYSTEMS FOR PRODUCTION OF EMITTED LIGHT FROM VARIOUS ENERGY SOURCES INCLUDING RADIO FREQUENCY, MICROWAVE ENERGY AND MAGNETIC INDUCTION SOURCES FOR UPCONVERSION 审中-公开
公开(公告)号：US20180317307A1
公开(公告)日：2018-11-01
申请号：US16012901
申请日：2018-06-20
申请人： IMMUNOLIGHT, LLC. , DUKE UNIVERSITY
发明人： Frederic A. BOURKE, JR. , Zakaryae Fathi , Ian Nicholas Stanton , Michael J. Therien , Paul Rath Stauffer , Paolo Maccarini , Katherine Sarah Hansen , Diane Renee Fels , Cory Robert Wyatt
IPC分类号： H05B41/28 , A61L2/10 , A61N1/40 , A61N1/44 , H01J65/04 , C02F1/32 , A61N5/10 , A61N2/00
CPC分类号： H05B41/2806 , A61L2/10 , A61N1/40 , A61N1/44 , A61N2/00 , A61N5/10 , C02F1/32 , H01J65/042 , Y02B20/22 , Y02W10/37
摘要： Methods and systems for producing a change in a medium. A first method and system (1) place in a vicinity of the medium at least one upconverter including a gas for plasma ignition, with the upconverter being configured, upon exposure to initiation energy, to generate light for emission into the medium, and (2) apply the initiation energy from an energy source including the first wavelength λ1 to the medium, wherein the emitted light directly or indirectly produces the change in the medium. A second method and system (1) place in a vicinity of the medium an agent receptive to microwave radiation or radiofrequency radiation, and (2) apply as an initiation energy the microwave radiation or radiofrequency radiation by which the agent directly or indirectly generates emitted light in the infrared, visible, or ultraviolet range to produce at least one of physical and biological changes in the medium.

5. 发明申请

US20180059163A1 QUICK-ACTION LEAKAGE DETECTION PROTECTION CIRCUIT HAVING REGULAR SELF-CHECKING FUNCTION 审中-公开
公开(公告)号：US20180059163A1
公开(公告)日：2018-03-01
申请号：US15691999
申请日：2017-08-31
申请人： Wenzhou Van-sheen Electric Appliance Co.,Ltd
发明人： Jinhe Huang
IPC分类号： G01R31/02 , H02H3/347 , H05B41/28 , H02H3/16 , G01R15/18 , H02H3/32 , H02J13/00
CPC分类号： G01R31/025 , G01R15/185 , G01R31/44 , H02H3/16 , H02H3/162 , H02H3/32 , H02H3/33 , H02H3/347 , H02J13/00 , H05B41/2813
摘要： A quick-action leakage detection protection circuit with a regular self-checking function is provided. The quick-action leakage detection protection circuit may include a power input end, a power load end, a power user end, twin induction coils for detecting leakage current and low resistance failure, a control chip, a trip coil in which an iron core is disposed, a reset button, a self-checking chip, and a self-checking silicon controlled rectifier. The reset button may be linked with a main circuit switch, an analog path switch, and a normally-open self-checking path switch. The main circuit switch may include a pair of dynamic contact levers extended from the power load end, a first pair of static contact ends extended from the power input end passing through the twin induction coils, and a second pair of static contact ends extended from the power user end. In some embodiments, a first end of the trip coil may be connected to a live line end of the power input end and to the live line of the power load end via the first normally-closed switch. And, a second end of the trip coil may be connected to a neutral line end of the power load end via a second normally-closed switch.

6. 发明授权

US09661714B2 Systems, apparatus, and methods for converting a bi-level lighting system to a dimmable lighting system 有权
公开(公告)号：US09661714B2
公开(公告)日：2017-05-23
申请号：US15167978
申请日：2016-05-27
申请人： ABL IP HOLDING, LLC
发明人： William J. Fassbender , Stephen H. Lydecker , Glen A. Kruse , Ryan A. Zaveruha , David M. Behnke
IPC分类号： H05B41/28 , H05B33/08 , H05B37/02 , H05B41/39 , H05B39/08 , H05B41/36
CPC分类号： H05B33/0854 , B23P6/00 , H05B33/0815 , H05B33/0845 , H05B33/0851 , H05B37/0209 , H05B37/0227 , H05B37/0254 , H05B39/086 , H05B41/36 , H05B41/39 , Y02B20/40 , Y02B20/46
摘要： A dimmable lighting system may replace a bi-level lighting system without having to modify or supplement the existing wiring between a bi-level control unit and one or more light fixtures. The dimmable lighting system may include a dimming controller that may be configured to replace a bi-level control unit in situ (i.e., e.g., in a wall-mounted dual-gang switch box). The dimmable lighting system may also include a dimming driver that may be coupled to the dimming controller via the existing wiring of the bi-level lighting system. The dimming controller may output to the dimming driver a 0-10 volt DC dimming signal referenced to an AC utility voltage. In response, a dimmable lighting device coupled to the dimming driver may output light over a wide range of dimming light levels. Methods of replacing a bi-level lighting system with a dimmable lighting system are also provided, as are other aspects.

7. 发明授权

US09572219B1 Hue and dimming control circuits for lamps or LED arrays 有权
标题翻译：用于灯或LED阵列的色调和调光控制电路
公开(公告)号：US09572219B1
公开(公告)日：2017-02-14
申请号：US14853633
申请日：2015-09-14
申请人： Hamilton Sundstrand Corporation
发明人： John A. Dickey
IPC分类号： H05B41/28 , H05B41/39 , H05B33/08 , B64D11/00
CPC分类号： H05B33/0851 , B64D11/00 , B64D2011/0053 , H04B3/546 , H04B2203/5412 , H04B2203/5416 , H04B2203/5458 , H04B2203/547 , H05B33/0815 , H05B33/0857 , H05B33/0866 , H05B37/0263 , Y02B20/346
摘要： A lighting system includes a light-emitting diode (LED) that emits light having a hue that varies in response to variations in a voltage applied to the LED and an intensity that varies in response to variations in a duty cycle of the applied voltage. The lighting system includes a controller configured to receive a command signal having a periodic peak voltage and a periodic valley voltage. The controller includes a peak detector and a valley detector that detects the peak voltage and the valley voltage, respectively. The controller includes a pulse generator that generates a pulse stream having a pulse-voltage magnitude substantially equal to the detected peak voltage and a pulse-voltage duty cycle substantially equal to the ratio of the detected valley voltage to the detected peak voltage. The generated pulse stream is applied to the LED resulting in light emission of the controlled hue and of the controlled intensity.
摘要翻译：一种照明系统包括发光二极管（LED），该发光二极管发出具有响应于施加到LED的电压的变化而变化的色调的光，以及响应于施加电压的占空比的变化而变化的强度。照明系统包括被配置为接收具有周期性峰值电压和周期性谷值电压的命令信号的控制器。控制器包括分别检测峰值电压和谷值电压的峰值检测器和谷值检测器。该控制器包括脉冲发生器，该脉冲发生器产生具有基本上等于检测到的峰值电压的脉冲电压幅度和基本上等于检测到的谷值电压与检测到的峰值电压的比率的脉冲电压占空比的脉冲流。产生的脉冲流被施加到LED，导致受控色调和受控强度的发光。

8. 发明申请

US20160320693A1 DISCHARGE LAMP DRIVING DEVICE, PROJECTOR, AND DISCHARGE LAMP DRIVING METHOD 有权
标题翻译：放电灯驱动装置，投影仪和放电灯驱动方法
公开(公告)号：US20160320693A1
公开(公告)日：2016-11-03
申请号：US15139022
申请日：2016-04-26
申请人： SEIKO EPSON CORPORATION
发明人： Shun SATO , Junichi SUZUKI , Satoshi KITO
IPC分类号： G03B21/20 , H04N9/31 , H05B41/38 , H05B41/28 , G03B21/00
CPC分类号： G03B21/2053 , G03B21/006 , G03B21/2026 , H04N9/3155 , H04N9/317 , H04N9/3194 , H04N9/3197 , H05B41/2886 , H05B41/2887 , H05B41/38 , Y02B20/202
摘要： A discharge lamp driving device includes a discharge lamp driving unit configured to supply a driving current to a discharge lamp including electrodes, a controller configured to control the discharge lamp driving unit, and a voltage detection unit configured to detect an inter-electrode voltage of the discharge lamp, in which the controller controls the discharge lamp driving unit so that the driving current includes a hybrid period in which a first period for supplying an AC current with a first frequency to the discharge lamp and a second period for supplying a DC current to the discharge lamp are alternately repeated, in which the first frequency includes a plurality of different frequencies, and in which the controller changes the first frequency on the basis of at least one of the detected inter-electrode voltage and driving power supplied to the discharge lamp.
摘要翻译：放电灯驱动装置包括：放电灯驱动单元，被配置为向包括电极的放电灯提供驱动电流;控制器，被配置为控制放电灯驱动单元;以及电压检测单元，被配置为检测所述放电灯驱动单元的电极间电压放电灯，其中控制器控制放电灯驱动单元，使得驱动电流包括混合时段，其中向放电灯提供具有第一频率的AC电流的第一周期和用于将DC电流提供给第二周期交替地重复放电灯，其中第一频率包括多个不同的频率，并且其中控制器基于检测到的电极间电压和提供给放电灯的驱动功率中的至少一个来改变第一频率。

9. 发明授权

US09426869B2 Multi-output electronic ballast 有权
标题翻译：多输出电子镇流器
公开(公告)号：US09426869B2
公开(公告)日：2016-08-23
申请号：US13231337
申请日：2011-09-13
申请人： Ching-Ho Chou , Yung-Chuan Lu
发明人： Ching-Ho Chou , Yung-Chuan Lu
IPC分类号： H05B37/02 , H05B41/28 , H05B41/295
CPC分类号： H05B41/28 , H05B41/295
摘要： A multi-output electronic ballast is disclosed. The multi-output electronic ballast is used to drive a plurality of lamp assemblies and includes an AC/DC converter, a first inverter, a second inverter, an auxiliary voltage generator, and a control circuit. The AC/DC converter converts an AC input voltage to a high DC voltage. The first inverter converts the high DC input voltage to a first AC voltage selectively. The second inverter converts the high DC voltage to a second AC voltage. The auxiliary voltage generator generates an auxiliary voltage. The control circuit receives the auxiliary voltage generating circuit and outputs a control signal to the first inverter according to the switching operation of a first external switch. When the control signal is transmitted to the first inverter, the first inverter comes into operation and converts the high DC voltage to the first AC voltage.
摘要翻译：公开了一种多输出电子镇流器。多输出电子镇流器用于驱动多个灯组件，包括AC / DC转换器，第一逆变器，第二逆变器，辅助电压发生器和控制电路。 AC / DC转换器将交流输入电压转换为高直流电压。第一个逆变器将高直流输入电压选择性地转换成第一交流电压。第二个逆变器将高直流电压转换成第二交流电压。辅助电压发生器产生辅助电压。控制电路接收辅助电压产生电路，并根据第一外部开关的切换操作向第一反相器输出控制信号。当控制信号被发送到第一反相器时，第一反相器进入工作状态并将高直流电压转换成第一交流电压。

10. 发明授权

US09232575B2 LCD backlight driving circuit and liquid crystal device 有权
标题翻译： LCD背光驱动电路和液晶装置
公开(公告)号：US09232575B2
公开(公告)日：2016-01-05
申请号：US14233150
申请日：2013-11-29
申请人： Shenzhen China Star Optoelectronics Technology Co., Ltd.
发明人： Xianming Zhang
IPC分类号： H05B33/08 , H05B41/28 , G02F1/1335 , G09G3/34
CPC分类号： H05B33/0803 , G02F1/133603 , G02F2001/133612 , G09G3/3406
摘要： A LED backlight driving circuit is disclosed. The LED backlight driving circuit includes a driving module, a detecting module, and an adjusting module. The driving module receives a control voltage generated by a voltage control module, receives a feedback voltage generated by a feedback voltage module, and generates driving signals to a LED unit. The detecting module generates adjusting signals for the adjusting module according to a detected value of the driving signals. The adjusting module controls the feedback voltage according to the adjusting signals generated by the detecting module so as to adjust the driving signals. In this way, not only the current precision within the LED unit is enhanced, but also the light source is kept stable. Also, the life cycle of the LED units is also increased. In addition, a LED backlight driving circuit includes the above LED backlight driving circuit is also disclosed.
摘要翻译：公开了一种LED背光驱动电路。 LED背光驱动电路包括驱动模块，检测模块和调整模块。驱动模块接收由电压控制模块产生的控制电压，接收由反馈电压模块产生的反馈电压，并向LED单元产生驱动信号。检测模块根据驱动信号的检测值产生调整模块的调整信号。调节模块根据由检测模块产生的调节信号来控制反馈电压，以便调节驱动信号。以这种方式，不仅提高了LED单元内的当前精度，而且光源保持稳定。此外，LED单元的生命周期也增加。此外，LED背光驱动电路还包括上述LED背光驱动电路。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式