LED driver with dynamic power management
    141.
    发明授权
    LED driver with dynamic power management 有权
    LED驱动器具有动态电源管理功能

    公开(公告)号:US07825610B2

    公开(公告)日:2010-11-02

    申请号:US12056237

    申请日:2008-03-26

    CPC classification number: H05B33/0827 H05B33/0815 Y02B20/347

    Abstract: Power management in a light emitting diode (LED) system having a plurality of LED strings is disclosed. A voltage source provides an output voltage to drive the LED strings. An LED driver monitors the tail voltages of the active LED strings to identify the minimum, or lowest, tail voltage and adjusts the output voltage of the voltage source based on the lowest tail voltage. The LED driver can adjust the output voltage so as to maintain the lowest tail voltage at or near a predetermined threshold voltage so as to ensure that the output voltage is sufficient to properly drive each active LED string with a regulated current in view of pulse width modulation (PWM) performance requirements without excessive power consumption.

    Abstract translation: 公开了具有多个LED串的发光二极管(LED)系统中的电源管理。 电压源提供输出电压来驱动LED串。 LED驱动器监视有源LED串的尾部电压,以识别最小或最低的尾部电压,并根据最低的尾部电压调节电压源的输出电压。 LED驱动器可以调节输出电压,以将最低的尾部电压保持在预定阈值电压处或接近预定阈值电压,以便确保输出电压足以根据脉宽调制来适当地驱动具有调节电流的每个有源LED串 (PWM)性能要求,而无需过多的功耗。

    Circuit for providing an approximately constant resistance and/or current and method therefor
    142.
    发明授权
    Circuit for providing an approximately constant resistance and/or current and method therefor 有权
    用于提供近似恒定的电阻和/或电流的电路及其方法

    公开(公告)号:US07804258B2

    公开(公告)日:2010-09-28

    申请号:US11929194

    申请日:2007-10-30

    Applicant: Bin Zhao

    Inventor: Bin Zhao

    CPC classification number: H05B33/0812 Y02B20/345

    Abstract: A circuit can provide an approximately constant resistance value that is virtually independent of process and temperature variations. A current control circuit may use a device that tracks the changes in a corresponding device over process and temperature variations. As a result, the behavior of device may be used to help determine the control information provided to device in order to maintain an approximately constant resistance Rm over process and temperature variations. The approximately constant resistance Rm may be used to provide an approximately constant current ILED. A wide variety of applications, not just LED drivers, may benefit from the use of an approximately constant resistance and/or current.

    Abstract translation: 电路可以提供几乎不变的过程和温度变化的近似恒定的电阻值。 电流控制电路可以使用跟踪过程和温度变化的对应装置中的变化的装置。 结果,可以使用装置的行为来帮助确定提供给装置的控制信息,以便在过程和温度变化上保持大致恒定的电阻Rm。 可以使用大致恒定的电阻Rm来提供近似恒定的电流ILED。 各种应用,不仅仅是LED驱动器,可能受益于使用近似恒定的电阻和/或电流。

    LED DRIVER WITH DYNAMIC HEADROOM CONTROL
    143.
    发明申请
    LED DRIVER WITH DYNAMIC HEADROOM CONTROL 有权
    LED驱动器与动态HEADROOM控制

    公开(公告)号:US20100194308A1

    公开(公告)日:2010-08-05

    申请号:US12363607

    申请日:2009-01-30

    CPC classification number: H05B33/0815 H05B33/0827 Y02B20/347

    Abstract: A voltage source provides an output voltage to drive a plurality of light emitting diode (LED) strings. A LED driver adjusts the level of the output voltage so as to maintain the lowest tail voltage of the LED strings at or near a predetermined threshold voltage so as provide sufficient headroom voltages for current regulators for the LED strings. The LED driver operates in an operational mode and a calibration mode, which can be implemented in parallel with, or part of, the operational mode. During the calibration mode, the LED driver determines, for each LED string, a code value representative of the level of the output voltage necessary to maintain the tail voltage of the corresponding LED string at or near the predetermined threshold voltage. In the operational mode, the code values from the calibration mode are used to control the voltage source to provide an appropriate level for the output voltage.

    Abstract translation: 电压源提供输出电压以驱动多个发光二极管(LED)串。 LED驱动器调节输出电压的电平,以便将LED串的最低尾电压保持在预定阈值电压处或接近预定阈值电压,以便为LED串的电流调节器提供足够的净空电压。 LED驱动器在操作模式和校准模式下操作,其可以与操作模式并行或部分实现。 在校准模式期间,LED驱动器针对每个LED串确定代表将相应LED串的尾部电压保持在或接近预定阈值电压所需的输出电压电平的代码值。 在操作模式下,来自校准模式的代码值用于控制电压源以为输出电压提供适当的电平。

    BATTERY LATCHING DEVICE FOR PORTABLE ELECTRONIC DEVICE
    144.
    发明申请
    BATTERY LATCHING DEVICE FOR PORTABLE ELECTRONIC DEVICE 失效
    用于便携式电子设备的电池锁定装置

    公开(公告)号:US20100119924A1

    公开(公告)日:2010-05-13

    申请号:US12475667

    申请日:2009-06-01

    CPC classification number: H01M2/1066

    Abstract: A battery latching device is using for accommodating a battery and includes a housing, two opposite latching portions, a resisting portion, and a stopping member. The housing has a bottom wall and configured for accommodating the battery therein. The latching portions are formed on the bottom wall of the housing, and are configured for limiting the two opposite sides of the battery. The resisting portion are formed on the bottom wall of the housing and aligned with one end of the latching portions. The stopping member is retained to the bottom wall of the housing and aligned with another end of the latching portions. The two opposite ends of the battery are hold between the resisting portion and the stopping portion. When detaching the battery from the housing, the stopping member is capable of being pressed toward the bottom wall to release the battery.

    Abstract translation: 电池闭锁装置用于容纳电池并且包括壳体,两个相对的闩锁部分,阻力部分和止动部件。 壳体具有底壁并且构造成用于将电池容纳在其中。 闩锁部分形成在壳体的底壁上,并且被配置为限制电池的两个相对侧。 抵抗部分形成在壳体的底壁上并与闩锁部分的一端对齐。 止动构件被保持到壳体的底壁并与闩锁部分的另一端对准。 电池的两个相对端保持在阻力部分和止动部分之间。 当将电池从外壳分离时,止动件能够被压向底壁以释放电池。

    PEER-TO-PEER MESSAGING SYSTEM
    146.
    发明申请
    PEER-TO-PEER MESSAGING SYSTEM 审中-公开
    对等呼叫系统

    公开(公告)号:US20080250110A1

    公开(公告)日:2008-10-09

    申请号:US12059926

    申请日:2008-03-31

    Applicant: Bin Zhao

    Inventor: Bin Zhao

    Abstract: In one embodiment, a distributed environment for supporting on-line collaborative meetings among a plurality of users includes a plurality of applications executing on different client machines. A sequence of messages is transmitted from a first application of the distributed environment to a second application of the distributed environment, using a multicast form of delivery. A request for re-transmission is received from the second application specifying at least one message of the sequence that was not received by the second application. In response to the request, the specified at least one message of the sequence is retransmitted from the first application to the second application using a reliable unicast form of delivery.

    Abstract translation: 在一个实施例中,用于支持多个用户之间的在线协作会议的分布式环境包括在不同客户端机器上执行的多个应用程序。 使用多播形式的传送将消息序列从分布式环境的第一应用发送到分布式环境的第二应用。 从第二应用程序接收到重新发送的请求,指定序列的至少一个未被第二应用接收的消息。 响应于该请求,使用可靠的单播传送形式将序列的指定的至少一个消息从第一应用重新发送到第二应用。

    Voltage up-conversion circuit
    147.
    发明申请
    Voltage up-conversion circuit 有权
    电压上变频电路

    公开(公告)号:US20080246457A1

    公开(公告)日:2008-10-09

    申请号:US12157241

    申请日:2008-06-09

    Applicant: Bin Zhao

    Inventor: Bin Zhao

    CPC classification number: H02M3/07

    Abstract: According to one exemplary embodiment, a voltage up-conversion circuit includes a modulated voltage generator circuit, where the modulated voltage generator circuit is configured to receive an input voltage and generate a modulated voltage, and where the modulated voltage generator circuit includes at least one transistor. The voltage up-conversion circuit further includes a switching circuit coupled to the modulated voltage generator circuit, where the switching circuit is configured to couple the modulated voltage to a load capacitor when the modulated voltage is at a high level and decouple the modulated voltage to the load capacitor when the modulated voltage is at a low level. In the voltage up-conversion circuit, the load capacitor reaches a voltage greater a breakdown voltage of the at least one transistor in the modulated voltage generator circuit. The breakdown voltage can be a reliability breakdown voltage.

    Abstract translation: 根据一个示例性实施例,电压上变换电路包括调制电压发生器电路,其中调制电压发生器电路被配置为接收输入电压并产生调制电压,并且其中调制电压发生器电路包括至少一个晶体管 。 电压上变换电路还包括耦合到调制电压发生器电路的开关电路,其中开关电路被配置为当调制电压处于高电平时将调制电压耦合到负载电容器,并将调制电压去耦到 当调制电压处于低电平时加载电容。 在电压上变换电路中,负载电容器达到调制电压发生器电路中至少一个晶体管的击穿电压更大的电压。 击穿电压可以是可靠性击穿电压。

    Voltage up-conversion circuit using low voltage transistors
    148.
    发明授权
    Voltage up-conversion circuit using low voltage transistors 有权
    使用低压晶体管的升压转换电路

    公开(公告)号:US07408330B2

    公开(公告)日:2008-08-05

    申请号:US11448651

    申请日:2006-06-06

    Applicant: Bin Zhao

    Inventor: Bin Zhao

    CPC classification number: H02M3/07

    Abstract: According to one exemplary embodiment, a voltage up-conversion circuit includes a modulated voltage generator circuit, where the modulated voltage generator circuit is configured to receive an input voltage and generate a modulated voltage, and where the modulated voltage generator circuit includes at least one transistor. The voltage up-conversion circuit further includes a switching circuit coupled to the modulated voltage generator circuit, where the switching circuit is configured to couple the modulated voltage to a load capacitor when the modulated voltage is at a high level and decouple the modulated voltage to the load capacitor when the modulated voltage is at a low level. In the voltage up-conversion circuit, the load capacitor reaches a voltage greater a breakdown voltage of the at least one transistor in the modulated voltage generator circuit. The breakdown voltage can be a reliability breakdown voltage.

    Abstract translation: 根据一个示例性实施例,电压上变换电路包括调制电压发生器电路,其中调制电压发生器电路被配置为接收输入电压并产生调制电压,并且其中调制电压发生器电路包括至少一个晶体管 。 电压上变换电路还包括耦合到调制电压发生器电路的开关电路,其中开关电路被配置为当调制电压处于高电平时将调制电压耦合到负载电容器,并将调制电压去耦到 当调制电压处于低电平时加载电容。 在电压上变换电路中,负载电容器达到调制电压发生器电路中至少一个晶体管的击穿电压更大的电压。 击穿电压可以是可靠性击穿电压。

    Distributed network system architecture for collaborative computing

    公开(公告)号:US07130883B2

    公开(公告)日:2006-10-31

    申请号:US09751424

    申请日:2000-12-29

    CPC classification number: H04L12/1827 H04L67/1095 H04L69/329 H04L69/40

    Abstract: A distributed collaborative computer system is provided that comprises a plurality of server computers interconnected via a high-speed link. Client computers can connect to any available server computer and start or join a conference hosted on either the server computer to which the client computer is connected or any other server in the system. As a result, the system and method of the present invention is easily scalable to support an arbitrary number of participants to a conference by merely adding the appropriate number of server computers to the system. In addition, by replicating the conference information on more than one server computer, the single point of failure limitation is eliminated. In fact, if a server hosting or participating in a conference malfunctions, the failure is detected by other server computers and the client computer is able to reconnect to the conference through a new server computer.

    Video editing GUI with layer view
    150.
    发明授权
    Video editing GUI with layer view 有权
    具有层次视图的视频编辑GUI

    公开(公告)号:US07073127B2

    公开(公告)日:2006-07-04

    申请号:US10188463

    申请日:2002-07-01

    CPC classification number: G11B27/34 G11B27/034

    Abstract: A graphical user interface for editing a video story includes a storyboard pane, a timeline pane, and a layer pane. The storyboard pane displays video clips of the video story and their transitions. The timeline pane displays tracks including a video track, a video overlay track, a text track, an effect track, and at least one audio track. The layer pane displays layers of a selected video clip from the video track. Each layer displays one layer clip. The layer clip can be a video layer clip, a text layer clip, or an audio layer clip. The layers in the layer pane show how the layer clips overlay each other (or not) in time to compose the selected video clip. A user uses the storyboard pane and the timeline pane to layout the video story, and the layer pane to layout the video clips in the video story.

    Abstract translation: 用于编辑视频故事的图形用户界面包括故事板窗格,时间轴窗格和图层窗格。 故事板窗格显示视频故事及其过渡的视频剪辑。 时间轴窗格显示包括视频轨道,视频覆盖轨道,文本轨道,效果轨道和至少一个音频轨道的轨道。 图层窗格从视频轨道显示所选视频剪辑的图层。 每层显示一层剪辑。 层剪辑可以是视频层剪辑,文本层剪辑或音频层剪辑。 图层窗格中的图层显示了层次剪辑如何及时叠加(或不及时)组合所选视频剪辑。 用户使用故事板窗格和时间轴窗格布局视频故事,以及图层窗格,以在视频故事中布局视频剪辑。

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