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    • 1. 发明授权
    • LED control using modulation frequency detection techniques
    • LED控制采用调制频率检测技术
    • US08390205B2
    • 2013-03-05
    • US13077669
    • 2011-03-31
    • Ming LiKerry DenvirPhilip E. Moskowitz
    • Ming LiKerry DenvirPhilip E. Moskowitz
    • H05B37/02
    • H05B33/0869H05B33/0827H05B33/086
    • A light emitting diode (LED) controller for controlling a plurality of LED channels includes channel select circuitry, detection circuitry, and error processor circuitry. The channel select circuitry is configured to drive N−1 LED channels of a plurality of (N) LED channels at a nominal modulation frequency and to selectively drive a selected one of the N LED channels at a probe modulation frequency. The detection circuitry is configured to receive a composite brightness signal corresponding to brightness signals from the N LED channels. The detection circuitry is further configured to filter the composite bright signal and generate a selected brightness signal corresponding to a brightness of the selected LED channel at the probe modulation frequency. The error processor circuitry is configured to compare the selected brightness signal to user defined and/or preset photometric quantities and generate a control signal for adjusting the brightness of the selected LED channel.
    • 用于控制多个LED通道的发光二极管(LED)控制器包括通道选择电路,检测电路和误差处理器电路。 通道选择电路被配置为以标称调制频率驱动多个(N)个LED通道的N-1个LED通道,并且以探针调制频率选择性地驱动N个LED通道中选定的一个。 检测电路被配置为接收对应于来自N个LED通道的亮度信号的复合亮度信号。 检测电路还被配置为对复合亮信号进行滤波,并以探头调制频率产生对应于所选择的LED通道的亮度的所选择的亮度信号。 误差处理器电路被配置为将所选择的亮度信号与用户定义的和/或预设的光度量进行比较,并产生用于调节所选择的LED通道的亮度的控制信号。
    • 2. 发明申请
    • LED CONTROL USING MODULATION FREQUENCY DETECTION TECHNIQUES
    • 使用调制频率检测技术的LED控制
    • US20120049745A1
    • 2012-03-01
    • US13077669
    • 2011-03-31
    • Ming LiKerry DenvirPhilip E. Moskowitz
    • Ming LiKerry DenvirPhilip E. Moskowitz
    • H05B37/02
    • H05B33/0869H05B33/0827H05B33/086
    • A light emitting diode (LED) controller for controlling a plurality of LED channels includes channel select circuitry, detection circuitry, and error processor circuitry. The channel select circuitry is configured to drive N−1 LED channels of a plurality of (N) LED channels at a nominal modulation frequency and to selectively drive a selected one of the N LED channels at a probe modulation frequency. The detection circuitry is configured to receive a composite brightness signal corresponding to brightness signals from the N LED channels. The detection circuitry is further configured to filter the composite bright signal and generate a selected brightness signal corresponding to a brightness of the selected LED channel at the probe modulation frequency. The error processor circuitry is configured to compare the selected brightness signal to user defined and/or preset photometric quantities and generate a control signal for adjusting the brightness of the selected LED channel.
    • 用于控制多个LED通道的发光二极管(LED)控制器包括通道选择电路,检测电路和误差处理器电路。 通道选择电路被配置为以标称调制频率驱动多个(N)个LED通道的N-1个LED通道,并且以探针调制频率选择性地驱动N个LED通道中选定的一个。 检测电路被配置为接收对应于来自N个LED通道的亮度信号的复合亮度信号。 检测电路还被配置为对复合亮信号进行滤波,并以探头调制频率产生对应于所选择的LED通道的亮度的所选择的亮度信号。 误差处理器电路被配置为将所选择的亮度信号与用户定义的和/或预设的光度量进行比较,并产生用于调节所选择的LED通道的亮度的控制信号。
    • 4. 发明申请
    • LED CONTROL USING MODULATION FREQUENCY DETECTION TECHNIQUES
    • 使用调制频率检测技术的LED控制
    • US20120049743A1
    • 2012-03-01
    • US12874201
    • 2010-09-01
    • Philip E. Moskowitz
    • Philip E. Moskowitz
    • H05B37/02
    • H05B33/0869H05B33/0827H05B33/086
    • In one embodiment, the present disclosure provides a method for controlling a plurality of LED channels. The method includes receiving an LED brightness signal having a plurality of superimposed pulse width modulated (PWM) brightness signals each having a duty cycle and amplitude at a unique modulation frequency, each PWM brightness signal being proportional to the brightness of a respective LED channel. The method also includes determining a pulse area of each PWM brightness signal at each respective unique frequency. The pulse area is proportional to the product of the amplitude and the duty cycle. The method also includes generating pulse area signals proportional to the respective pulse area and comparing the respective pulse area signals to user defined and/or preset photometric values to generate respective error signals proportional to the difference between the respective pulse area signals and the user defined and/or preset photometric values.
    • 在一个实施例中,本公开提供了一种用于控制多个LED通道的方法。 该方法包括接收具有多个叠加的脉冲宽度调制(PWM)亮度信号的LED亮度信号,每个亮度信号具有唯一调制频率的占空比和幅度,每个PWM亮度信号与相应LED通道的亮度成比例。 该方法还包括在每个相应的唯一频率下确定每个PWM亮度信号的脉冲面积。 脉冲面积与幅度和占空比的乘积成比例。 该方法还包括产生与各个脉冲区域成比例的脉冲区域信号,并将相应的脉冲区域信号与用户定义的和/或预设的光度值进行比较,以产生与各个脉冲区域信号和用户定义的差异成正比的各个误差信号, /或预设的光度值。
    • 6. 发明申请
    • PULSE-EXCITED MERCURY-FREE LAMP SYSTEM
    • 无刺激的无汞灯泡系统
    • US20140252979A1
    • 2014-09-11
    • US13788611
    • 2013-03-07
    • Philip E. Moskowitz
    • Philip E. Moskowitz
    • H05B41/30
    • H05B41/288Y10S315/07
    • A pulse-excited mercury-free lamp system, and method of sustaining the emission of light emission from such a lamp, is provided. The system includes a light-transmissive envelope having an inner surface and a phosphor layer coated thereon. A discharge-sustaining gaseous mixture of a noble gas, at a low pressure, and a metal halide, is retained inside the light-transmissive envelope. An electrical system provides a plurality of pulses to the discharge-sustaining gaseous mixture, resulting in a discharge, which causes the lamp system to emit light. The emission of light is maintained by turning the discharge on during a pulse width of each pulse in the plurality of pulses and by turning the discharge off during a remainder of each period in the plurality of pulses. Particularly in systems where the metal halide is indium-based, this maintains an efficient emission of light without the use of mercury.
    • 提供了脉冲激发的无汞灯系统以及维持这种灯发光的方法。 该系统包括具有涂覆在其上的内表面和荧光体层的透光外壳。 惰性气体在低压下和金属卤化物的放电维持气体混合物保持在透光外壳内。 电系统向放电维持气体混合物提供多个脉冲,导致放电,这导致灯系统发光。 通过在多个脉冲中的每个脉冲的脉冲宽度期间接通放电并且在多个脉冲的每个周期的剩余时间期间关闭放电来保持光的发射。 特别是在金属卤化物为铟系的系统中,这种保持有效的光发射而不使用汞。
    • 8. 发明授权
    • Pulse-excited mercury-free lamp system
    • 脉冲激光无汞灯系统
    • US08994288B2
    • 2015-03-31
    • US13788611
    • 2013-03-07
    • Philip E. Moskowitz
    • Philip E. Moskowitz
    • H05B41/30H05B41/288
    • H05B41/288Y10S315/07
    • A pulse-excited mercury-free lamp system, and method of sustaining the emission of light emission from such a lamp, is provided. The system includes a light-transmissive envelope having an inner surface and a phosphor layer coated thereon. A discharge-sustaining gaseous mixture of a noble gas, at a low pressure, and a metal halide, is retained inside the light-transmissive envelope. An electrical system provides a plurality of pulses to the discharge-sustaining gaseous mixture, resulting in a discharge, which causes the lamp system to emit light. The emission of light is maintained by turning the discharge on during a pulse width of each pulse in the plurality of pulses and by turning the discharge off during a remainder of each period in the plurality of pulses. Particularly in systems where the metal halide is indium-based, this maintains an efficient emission of light without the use of mercury.
    • 提供了脉冲激发的无汞灯系统以及维持这种灯发光的方法。 该系统包括具有涂覆在其上的内表面和荧光体层的透光外壳。 惰性气体在低压下和金属卤化物的放电维持气体混合物保持在透光外壳内。 电系统向放电维持气体混合物提供多个脉冲,导致放电,这导致灯系统发光。 通过在多个脉冲中的每个脉冲的脉冲宽度期间接通放电并且在多个脉冲的每个周期的剩余时间期间关闭放电来保持光的发射。 特别是在金属卤化物为铟系的系统中,这种保持有效的光发射而不使用汞。