公开(公告)号：US09093032B2

公开(公告)日：2015-07-28

申请号：US13251123

申请日：2011-09-30

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： H05B41/28 ,  G09G3/34

CPC分类号： G09G3/3406 ,  G09G2320/064 ,  G09G2330/02 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

摘要： Systems and methods for inaudible enhanced pulse width modulation (PWM) backlight dimming are provided. By way of example, an electronic display backlight system according to the present disclosure may include a backlight element and backlight driver circuitry. The backlight driver circuitry may drive the backlight element at various brightness levels using at least two individual duty cycles that occur immediately after one another. The backlight driver circuitry may vary the individual duty cycles such that none will ever reach 100% unless all are 100%, thereby preventing the occurrence of audible noise that might otherwise arise if an “on” PWM period from one individual duty cycle continued into the next.

摘要翻译： 提供用于无声增强型脉宽调制（PWM）背光调光的系统和方法。 作为示例，根据本公开的电子显示器背光系统可以包括背光元件和背光驱动器电路。 背光驱动器电路可以使用至少两个彼此之间立即发生的独立占空比驱动各种亮度级的背光元件。 背光驱动器电路可以改变单独的占空比，使得除非全部都为100％，否则将不会达到100％，从而防止如果从一个单独占空比的“导通”PWM周期持续到 下一个。

公开(公告)号：US09269305B2

公开(公告)日：2016-02-23

申请号：US13610067

申请日：2012-09-11

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： G09G3/34

CPC分类号： G09G3/3406 ,  G09G2320/0242 ,  G09G2330/021

摘要： Systems, devices, and methods for using a hot plug detect (HPD) signal to reduce turn on time of a backlight of a display are disclosed. The backlight controller may pre-charge the backlight based at least in part on receiving the HPD signal prior to receiving a BL_EN signal to turn on the backlight. The HPD signal may be a multipurpose signal used by components of a system in addition to the backlight driver. The backlight driver may turn on the pre-charged backlight immediately upon receiving the BL_EN signal. The backlight controller may maintain the pre-charge of the backlight while the device is in a sleep state to reduce the turn on time of the backlight from the sleep state. Embodiments of the HPD signal may also power down the display and backlight.

摘要翻译： 公开了使用热插拔检测（HPD）信号来减少显示器背光的打开时间的系统，设备和方法。 至少部分地，背光控制器可以在接收到BL_EN信号以接通背光之前接收HPD信号来预充电背光源。 除了背光驱动器之外，HPD信号可以是系统的组件使用的多用途信号。 背光驱动器可以在接收到BL_EN信号后立即打开预充电背光。 背光控制器可以在设备处于睡眠状态时保持背光的预充电，以减少背光源从睡眠状态的接通时间。 HPD信号的实施例也可以使显示器和背光源断电。

公开(公告)号：US08884867B2

公开(公告)日：2014-11-11

申请号：US13311474

申请日：2011-12-05

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： G01R31/00 ,  G09G3/36

CPC分类号： H05B33/0887 ,  Y02B20/341

摘要： Systems, methods, and devices are provided for detecting short circuits in a backlight assembly without a resistor-based current sensor. For example, an electronic display according to the present disclosure may include a display panel and a backlight assembly to illuminate the display panel. The backlight assembly may drive a backlight element to illuminate the display panel and may include backlight short-circuit detection circuitry. The backlight short-circuit protection circuitry may detect a feedback voltage associated with the backlight element and determine when a short circuit has occurred based at least in part on the feedback voltage.

摘要翻译： 系统，方法和设备被提供用于检测背光组件中的短路而不使用基于电阻器的电流传感器。 例如，根据本公开的电子显示器可以包括显示面板和用于照亮显示面板的背光组件。 背光组件可以驱动背光元件照亮显示面板，并且可以包括背光短路检测电路。 背光短路保护电路可以检测与背光元件相关联的反馈电压，并且至少部分地基于反馈电压来确定何时发生短路。

公开(公告)号：US20140071172A1

公开(公告)日：2014-03-13

申请号：US13610067

申请日：2012-09-11

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： G09G5/10

CPC分类号： G09G3/3406 ,  G09G2320/0242 ,  G09G2330/021

摘要： Systems, devices, and methods for using a hot plug detect (HPD) signal to reduce turn on time of a backlight of a display are disclosed. The backlight controller may pre-charge the backlight based at least in part on receiving the HPD signal prior to receiving a BL_EN signal to turn on the backlight. The HPD signal may be a multipurpose signal used by components of a system in addition to the backlight driver. The backlight driver may turn on the pre-charged backlight immediately upon receiving the BL_EN signal. The backlight controller may maintain the pre-charge of the backlight while the device is in a sleep state to reduce the turn on time of the backlight from the sleep state. Embodiments of the HPD signal may also power down the display and backlight.

摘要翻译： 公开了使用热插拔检测（HPD）信号来减少显示器背光的打开时间的系统，设备和方法。 至少部分地，背光控制器可以在接收到BL_EN信号以接通背光之前接收HPD信号来预充电背光源。 除了背光驱动器之外，HPD信号可以是系统的组件使用的多用途信号。 背光驱动器可以在接收到BL_EN信号后立即打开预充电背光。 背光控制器可以在设备处于睡眠状态时保持背光的预充电，以减少背光源从睡眠状态的接通时间。 HPD信号的实施例也可以使显示器和背光源断电。

公开(公告)号：US20130141322A1

公开(公告)日：2013-06-06

申请号：US13311474

申请日：2011-12-05

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： G01R31/00 ,  G09G3/36

CPC分类号： H05B33/0887 ,  Y02B20/341

摘要： Systems, methods, and devices are provided for detecting short circuits in a backlight assembly without a resistor-based current sensor. For example, an electronic display according to the present disclosure may include a display panel and a backlight assembly to illuminate the display panel. The backlight assembly may drive a backlight element to illuminate the display panel and may include backlight short-circuit detection circuitry. The backlight short-circuit protection circuitry may detect a feedback voltage associated with the backlight element and determine when a short circuit has occurred based at least in part on the feedback voltage.

摘要翻译： 系统，方法和设备被提供用于检测背光组件中的短路而不使用基于电阻器的电流传感器。 例如，根据本公开的电子显示器可以包括显示面板和用于照亮显示面板的背光组件。 背光组件可以驱动背光元件照亮显示面板，并且可以包括背光短路检测电路。 背光短路保护电路可以检测与背光元件相关联的反馈电压并且至少部分地基于反馈电压来确定何时发生短路。

公开(公告)号：US20130082618A1

公开(公告)日：2013-04-04

申请号：US13251123

申请日：2011-09-30

申请人： Asif Hussain ,  Manisha P. Pandya

发明人： Asif Hussain ,  Manisha P. Pandya

IPC分类号： H05B37/02

CPC分类号： G09G3/3406 ,  G09G2320/064 ,  G09G2330/02 ,  H05B33/0815 ,  H05B33/0818 ,  Y02B20/346

摘要： Systems and methods for inaudible enhanced pulse width modulation (PWM) backlight dimming are provided. By way of example, an electronic display backlight system according to the present disclosure may include a backlight element and backlight driver circuitry. The backlight driver circuitry may drive the backlight element at various brightness levels using at least two individual duty cycles that occur immediately after one another. The backlight driver circuitry may vary the individual duty cycles such that none will ever reach 100% unless all are 100%, thereby preventing the occurrence of audible noise that might otherwise arise if an “on” PWM period from one individual duty cycle continued into the next.

摘要翻译： 提供用于无声增强型脉宽调制（PWM）背光调光的系统和方法。 作为示例，根据本公开的电子显示器背光系统可以包括背光元件和背光驱动器电路。 背光驱动器电路可以使用至少两个彼此之间立即发生的独立占空比驱动各种亮度级的背光元件。 背光驱动器电路可以改变各个占空比，使得除非全部都为100％，否则不会达到100％，从而防止如果从一个单独占空比的导通PWM周期继续进入下一个可能会出现可听见的噪声。

公开(公告)号：US08355409B2

公开(公告)日：2013-01-15

申请号：US13341600

申请日：2011-12-30

申请人： Asif Hussain ,  Manisha Pandya ,  Farzan Roohparvar ,  John Perzow

发明人： Asif Hussain ,  Manisha Pandya ,  Farzan Roohparvar ,  John Perzow

IPC分类号： H04L12/28 ,  H02J7/34

CPC分类号： H04L12/66 ,  Y10T307/549

摘要： A system and method of analyzing a powered device (PD) in a Power-over-Ethernet (PoE) system are presented. The system includes an Ethernet interface having a physical layer (PRY) chip capable of providing a signal pulse in addition to physical layer 1 functions. The system further includes a pulse transformer, coupled to the PRY chip, capable of relaying the signal pulse provided by the PRY chip to the PD via the transmit line and a second PRY chip. The first PRY chip receives one or more return pulse signals from the PD, analyzes characteristics such as voltage and/or frequency of the return pulse signal(s), and determines attributes of the PD based on those characteristics. The attributes can include powered device validity and power classification. A method of supplying power to a PD is also presented.

摘要翻译： 提出了一种分析以太网供电（PoE）系统中的供电设备（PD）的系统和方法。 该系统包括具有能够提供除物理层1功能之外的信号脉冲的物理层（PHY）芯片的以太网接口。 该系统还包括连接到PHY芯片的脉冲变压器，其能够经由传输线路将PHY芯片提供的信号脉冲中继到PD，以及第二PHY芯片。 第一PHY芯片从PD接收一个或多个返回脉冲信号，分析诸如返回脉冲信号的电压和/或频率的特性，并且基于这些特性来确定PD的属性。 属性可以包括有源设备的有效性和功率分类。 还提供了向PD供电的方法。

公开(公告)号：US08205099B2

公开(公告)日：2012-06-19

申请号：US11783401

申请日：2007-04-09

申请人： Asif Hussain ,  Manisha Pandya ,  Wael William Diab

发明人： Asif Hussain ,  Manisha Pandya ,  Wael William Diab

IPC分类号： G06F1/26

CPC分类号： H04L12/40045

摘要： In a Power over Ethernet (POE) system, a power source equipment (PSE) device configured to deliver power to one or more powered devices (PDs) over a plurality of Ethernet transmission lines. The PSE interface includes a multi-port transmission line connector capable connecting to multiple Ethernet transmission lines, and a power source equipment (PSE) controller module integrated with the multi-port transmission line connector. The PSE controller module is capable of semi-automatic mode and legacy detection of one or more of the PDs that are coupled to the Ethernet transmission lines. The PSE controller module includes a plurality of PSE controllers corresponding to the Ethernet transmission lines, including a master PSE controller and plurality of slave PSE controllers coupled to the master PSE controller. The master PSE controller controls the slave PSE controllers, so as to provide power management to said corresponding PD devices, without an external microcontroller. In another embodiment, the PSE controller(s) inside the connector are configured for fully automatic mode, and include the feature of independent power management.

摘要翻译： 在以太网供电（POE）系统中，电源设备（PSE）设备被配置为通过多个以太网传输线路向一个或多个供电设备（PD）传送电力。 PSE接口包括可连接多个以太网传输线的多端口传输线连接器，以及与多端口传输线连接器集成的电源设备（PSE）控制器模块。 PSE控制器模块能够半耦合到以太网传输线的一个或多个PD的半自动模式和传统检测。 PSE控制器模块包括对应于以太网传输线的多个PSE控制器，包括主PSE控制器和耦合到主PSE控制器的多个从PSE控制器。 主PSE控制器控制从PSE控制器，以便在没有外部微控制器的情况下向所述相应的PD设备提供电源管理。 在另一个实施例中，连接器内部的PSE控制器被配置为全自动模式，并且包括独立电源管理的特征。

公开(公告)号：US20080098240A1

公开(公告)日：2008-04-24

申请号：US11582371

申请日：2006-10-18

申请人： Asif Hussain ,  Manisha Pandya

发明人： Asif Hussain ,  Manisha Pandya

IPC分类号： G06F1/00

CPC分类号： H04L12/66

摘要： A system and method for communicating information using Layer 1 from a powered device to power source equipment via Ethernet. In one embodiment, Layer 1 information such as power management, classification, temperature, and disconnect information is transmitted from a powered device to power source equipment using an AC signal that has a cycle defining a first time period during which the AC signal is turned on and a second time period during which the AC signal is turned off. A type of information being sent by the powered device can be determined based on characteristic on/off times of the AC signal cycle.

摘要翻译： 一种用于通过以太网将第1层从有源设备传送到电源设备的信息的系统和方法。 在一个实施例中，诸如功率管理，分类，温度和断开信息之类的层1信息使用AC信号从供电设备发送到电源设备，该AC信号具有定义AC信号接通的第一时间段的周期 以及关闭AC信号的第二时间段。 由供电设备发送的一种类型的信息可以基于AC信号周期的特征开/关时间来确定。

公开(公告)号：US08842018B2

公开(公告)日：2014-09-23

申请号：US12906102

申请日：2010-10-17

申请人： Asif Hussain ,  Joshua Chien ,  Sushil Dhiman

发明人： Asif Hussain ,  Joshua Chien ,  Sushil Dhiman

IPC分类号： G08B21/00 ,  G11C16/34 ,  G06K19/00 ,  G06F21/86

CPC分类号： G11C16/349 ,  G06F21/86 ,  G06K19/00 ,  G11C16/3495

摘要： Methods and/or devices are provided for monitoring life-expectancy and/or useful life of an optical transceiver module by tracking an insertion cycle count of an optical transceiver module. An alarm/warning indicator may be generated or the optical transceiver module can be disabled completely if the insertion cycle count exceeds a predefined threshold. The host device first detects the insertion of the optical transceiver module and then reads the cycle count along with an identifier value from the non-volatile memory of the optical transceiver module. The host device then increments the insertion cycle count by one, to account for the current insertion, and stores this new cycle count into a non-volatile memory of the optical transceiver module. The insertion cycle count value may be encrypted and/or the non-volatile memory of the optical transceiver module may be password-protected to avoid accidental and/or unauthorized access to the non-volatile memory of the optical transceiver module.

摘要翻译： 提供了用于通过跟踪光收发器模块的插入周期计数来监视光收发器模块的寿命和/或使用寿命的方法和/或设备。 如果插入周期数超过预定义的阈值，则可能会产生警报/警告指示灯，或者可以完全禁用光收发模块。 主设备首先检测光收发器模块的插入，然后从光收发器模块的非易失性存储器读取周期计数以及标识符值。 然后，主机设备将插入周期计数递增1，以考虑当前插入，并将该新周期计数存储到光收发器模块的非易失性存储器中。 可以加密插入周期计数值和/或光收发器模块的非易失性存储器可被密码保护，以避免意外和/或未经授权地访问光收发器模块的非易失性存储器。