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1. 发明授权

US07760431B2 Method of and apparatus for modifying polarity of light 失效
标题翻译：修改光的极性的方法和装置
公开(公告)号：US07760431B2
公开(公告)日：2010-07-20
申请号：US11123562
申请日：2005-05-05
申请人： David L. Williams , Michael Goldstein , James P. Kardach
发明人： David L. Williams , Michael Goldstein , James P. Kardach
IPC分类号： G02B27/28
CPC分类号： G02B27/286
摘要： A method of modifying polarity of light is provided. The light propagates through a first transverse plane and has known polarization states in respective cells of the first transverse plane. A first retardation compensator having respective waveplates matching the cells then changes the polarity of the light so that light propagating through a second transverse plane is circularly polarized across the entire second transverse plane. A second retardation compensator includes a plurality of quarter waveplates that change the polarization of the circularly polarized light, so that light passing through a third transverse plane is linearly polarized. The crystal alignment of the quarter waveplates and their shape and configuration are selected so that the direction of the polarization is normal to a radius from a single point.
摘要翻译：提供了改变光的极性的方法。光通过第一横向平面传播并且在第一横向平面的相应单元中具有已知的偏振状态。具有与单元匹配的各个波片的第一延迟补偿器然后改变光的极性，使得通过第二横向平面传播的光在整个第二横向平面上被圆偏振。第二延迟补偿器包括改变圆偏振光的偏振的多个四分之一波片，使得穿过第三横向平面的光线性偏振。选择四分之一波片的晶体对准及其形状和结构，使得偏振方向垂直于单个点的半径。

2. 发明授权

US06886954B2 System and method for processing light in an electronic display system 失效
标题翻译：用于在电子显示系统中处理光的系统和方法
公开(公告)号：US06886954B2
公开(公告)日：2005-05-03
申请号：US10326162
申请日：2002-12-23
申请人： David L Williams , James P. Kardach
发明人： David L Williams , James P. Kardach
IPC分类号： F21V8/00 , G02F1/13357 , F21V9/14
CPC分类号： G02B6/0018 , G02B6/0021 , G02B6/0056 , G02B6/0073 , G02F1/13362
摘要： Embodiments of the present invention relate to a device for polarizing light in a backlighting system of an electronic display to conserve energy. Embodiments of the invention may comprise an optically transparent material that includes an interface therein to separate randomly polarized light into vertically polarized and horizontally polarized components. The optically transparent material may have a re-polarizing layer thereon to change a polarization of one of the separated components, and a reflective edge disposed at an angle substantially parallel to the interface.
摘要翻译：本发明的实施例涉及一种用于偏振电子显示器的背光系统中的光以节约能量的装置。本发明的实施例可以包括光学透明材料，其包括其中的界面以将随机偏振光分离成垂直偏振和水平偏振分量。光学透明材料可以在其上具有重新偏振层，以改变分离的组分中的一个的偏振，以及以基本平行于界面的角度设置的反射边缘。

3. 发明授权

US09865233B2 Hybrid graphics display power management 有权
公开(公告)号：US09865233B2
公开(公告)日：2018-01-09
申请号：US12346759
申请日：2008-12-30
申请人： Seh W. Kwa , James P. Kardach
发明人： Seh W. Kwa , James P. Kardach
IPC分类号： G09G5/36 , G09G5/00
CPC分类号： G09G5/36 , G09G5/003 , G09G2320/103 , G09G2330/021 , G09G2360/06 , G09G2360/10 , G09G2360/18
摘要： Some embodiments describe techniques that relate to hybrid graphics display power management. In one embodiment, data corresponding to one or more image frames of a video stream are stored in a local frame buffer. A display device (e.g., an LCD) may then be driven based on the stored data in the local frame buffer or a video stream from a graphics controller. Other embodiments are also described.

4. 发明申请

US20140185156A1 POWER CONSERVATION BASED ON HARD DISK ROTATIONAL INERTIA 有权
标题翻译：基于硬盘旋转运算的功率保护
公开(公告)号：US20140185156A1
公开(公告)日：2014-07-03
申请号：US13729221
申请日：2012-12-28
申请人： James P. Kardach , KIRSTY MACDONALD , PETER GIBSON
发明人： James P. Kardach , KIRSTY MACDONALD , PETER GIBSON
IPC分类号： G11B19/28
CPC分类号： G11B19/28
摘要： Various embodiments are generally directed recurringly cycling the driving of a platter media of a hard drive with a motor, allowing rotation of the platter media to slow only to a threshold rotational speed to balance power conservation with delays in accessing data. A method comprises driving platter media of a hard drive to rotate at a selected normal rotational speed, retrieving data stored on the platter media when the platter media rotates at the normal rotational speed, ceasing to drive the platter media to rotate to allow the platter media to rotate under rotational inertia imparted to the platter media, monitoring a current rotational speed of the platter media, and resuming driving the platter media to rotate based on the current rotational speed falling to a lower threshold rotational speed selected to be less than the normal rotational speed. Other embodiments are described and claimed.
摘要翻译：各种实施例通常定期循环利用电动机驱动硬盘驱动器的盘片介质，允许盘片介质的旋转仅减慢到阈值旋转速度以平衡功率节省与访问数据的延迟。一种方法包括驱动硬盘驱动器的盘式介质以选定的正常转速旋转，当盘式介质以正常转速旋转时检索存储在盘片介质上的数据，停止驱动盘式介质旋转以允许盘片介质在旋转惯性下旋转到盘片介质上，监测盘片介质的当前旋转速度，并且基于当前旋转速度下降到低于正常旋转的较低阈值旋转速度，重新开始驱动盘片介质旋转速度。描述和要求保护其他实施例。

5. 发明授权

US08484488B2 Dynamic core swapping 有权
公开(公告)号：US08484488B2
公开(公告)日：2013-07-09
申请号：US12326775
申请日：2008-12-02
申请人： Brian V. Belmont , Animesh Mishra , James P. Kardach
发明人： Brian V. Belmont , Animesh Mishra , James P. Kardach
IPC分类号： G06F1/00 , G06F1/32
CPC分类号： G06F9/4418 , G06F1/3228 , G06F1/3275 , G06F1/3293 , G06F9/3867 , G06F9/4401 , G06F12/0842 , G06F13/4282 , G06F15/80 , Y02D10/151
摘要： An embodiment of the present invention is a technique to dynamically swap processor cores. A first core has a first instruction set. The first core executes a program at a first performance level. The first core stops executing the program when a triggering event occurs. A second core has a second instruction set compatible with the first instruction set and has a second performance level different than the first performance level. The second core is in a power down state when the first core is executing the program. A circuit powers up the second core after the first core stops executing the program such that the second core continues executing the program at the second performance level.

6. 发明授权

US08156351B2 Dynamic core swapping 有权
公开(公告)号：US08156351B2
公开(公告)日：2012-04-10
申请号：US12326775
申请日：2008-12-02
申请人： Brian V. Belmont , Animesh Mishra , James P. Kardach
发明人： Brian V. Belmont , Animesh Mishra , James P. Kardach
IPC分类号： G06F1/00 , G06F1/32
摘要： An embodiment of the present invention is a technique to dynamically swap processor cores. A first core has a first instruction set. The first core executes a program at a first performance level. The first core stops executing the program when a triggering event occurs. A second core has a second instruction set compatible with the first instruction set and has a second performance level different than the first performance level. The second core is in a power down state when the first core is executing the program. A circuit powers up the second core after the first core stops executing the program such that the second core continues executing the program at the second performance level.

7. 发明申请

US20100083013A1 Various Methods and Apparatuses for Power States in a Controller 审中-公开
标题翻译：控制器中功率状态的各种方法和装置
公开(公告)号：US20100083013A1
公开(公告)日：2010-04-01
申请号：US12632548
申请日：2009-12-07
申请人： James P. Kardach , Barnes Cooper , Seh Kwa , Animesh Mishra , Paul Diefenbaugh
发明人： James P. Kardach , Barnes Cooper , Seh Kwa , Animesh Mishra , Paul Diefenbaugh
IPC分类号： G06F1/00 , G06F1/32
CPC分类号： G06F1/3203 , G06F1/325
摘要： Various methods, apparatuses, and systems are described in which a chipset controller has circuitry to control communications with a peripheral device in a computing device. The chipset controller has logic configured 1) to detect a plug-in event when the peripheral device connects to the chipset controller and 2) to transition the chipset controller from a low power consumption state to a higher power consumption state based on the logic detecting the plug-in event.
摘要翻译：描述了各种方法，装置和系统，其中芯片组控制器具有控制与计算设备中的外围设备的通信的电路。芯片组控制器具有逻辑配置1）当外围设备连接到芯片组控制器时检测插件事件，以及2）基于逻辑检测来将芯片组控制器从低功耗状态转换到更高功耗状态插件事件。

8. 发明申请

US20090083554A1 DYNAMIC CORE SWAPPING 有权
标题翻译：动态核心切换
公开(公告)号：US20090083554A1
公开(公告)日：2009-03-26
申请号：US12326775
申请日：2008-12-02
申请人： Brian V. Belmont , Animesh Mishra , James P. Kardach
发明人： Brian V. Belmont , Animesh Mishra , James P. Kardach
IPC分类号： G06F1/26 , G06F12/08 , G06F1/32
CPC分类号： G06F9/4418 , G06F1/3228 , G06F1/3275 , G06F1/3293 , G06F9/3867 , G06F9/4401 , G06F12/0842 , G06F13/4282 , G06F15/80 , Y02D10/151
摘要： An embodiment of the present invention is a technique to dynamically swap processor cores. A first core has a first instruction set. The first core executes a program at a first performance level. The first core stops executing the program when a triggering event occurs. A second core has a second instruction set compatible with the first instruction set and has a second performance level different than the first performance level. The second core is in a power down state when the first core is executing the program. A circuit powers up the second core after the first core stops executing the program such that the second core continues executing the program at the second performance level.
摘要翻译：本发明的实施例是用于动态地交换处理器核心的技术。第一个核心有一个第一个指令集。第一个核心以第一个性能级别执行程序。当触发事件发生时，第一个内核停止执行程序。第二核心具有与第一指令集兼容的第二指令集，并且具有与第一性能级别不同的第二性能级别。当第一个核心执行程序时，第二个内核处于掉电状态。在第一核心停止执行程序之后，电路对第二核心供电，使得第二核心继续在第二性能级别执行程序。

9. 发明授权

US6018803A Method and apparatus for detecting bus utilization in a computer system based on a number of bus events per sample period 失效
标题翻译：基于每个采样周期的总线事件数量来检测计算机系统中的总线利用的方法和装置
公开(公告)号：US6018803A
公开(公告)日：2000-01-25
申请号：US768913
申请日：1996-12-17
申请人： James P. Kardach
发明人： James P. Kardach
IPC分类号： G06F1/32 , G06F11/34
CPC分类号： G06F1/3228 , G06F1/3215 , G06F11/349 , G06F2201/81
摘要： A bus utilization detection circuit and method. An input is configured to be coupled to a bus to detect bus events. A circuit coupled to the input determines a number of bus events during a first sample period to indicate a percent bus utilization. If the number of bus events during the first sample period meets a first predetermined threshold value, then an activity event is generated. In another embodiment, an activity event is generated only if during a second sample period, the number of first sample periods for which the percent bus utilization meets the first threshold value meets a second threshold value.
摘要翻译：一种总线利用检测电路及方法。输入被配置为耦合到总线以检测总线事件。耦合到输入的电路确定在第一采样周期期间的总线事件数量，以指示百分比总线利用率。如果在第一采样周期期间总线事件的数量满足第一预定阈值，则生成活动事件。在另一个实施例中，仅当在第二采样周期期间，百分比总线利用率满足第一阈值的第一采样周期的数量满足第二阈值时才产生活动事件。

10. 发明授权

US6014751A Method and apparatus for maintaining cache coherency in an integrated circuit operating in a low power state 失效
标题翻译：用于在低功率状态下工作的集成电路中保持高速缓存一致性的方法和装置
公开(公告)号：US6014751A
公开(公告)日：2000-01-11
申请号：US841858
申请日：1997-05-05
申请人： James P. Kardach , John Horigan , Ravi Eakambaram , Tosaku Nakanishi , Chih-Hung Chung , Borys S. Senyk
发明人： James P. Kardach , John Horigan , Ravi Eakambaram , Tosaku Nakanishi , Chih-Hung Chung , Borys S. Senyk
IPC分类号： G06F1/04 , G06F1/32 , G06F12/08 , G06F1/10
CPC分类号： G06F1/3237 , G06F1/3203 , G06F1/324 , G06F12/0835 , Y02B60/1217 , Y02B60/1221
摘要： A method and apparatus for operating an integrated in a reduced-power consumption state are described. The apparatus comprises power-reduction logic which, to place the integrated circuit in the reduced-power consumption state, gates a clock signal to both first and second sets of functional units within the integrated circuit. The first set of functional units is distinguished in that it is required to perform cache coherency operations within integrated circuit. The apparatus includes an input which is coupled to receive a signal indicating a memory access, to a memory resource accessible by the integrated circuit, by a further device external to the integrated circuit. In response to the assertion of this signal, the power-reduction logic propagates the clock signal to the first set of functional units, to enable this set of functional units to perform a cache coherency operation which may be necessitated by the memory access by the external device.
摘要翻译：描述用于操作集成在降低功耗状态的方法和装置。该装置包括功率降低逻辑，为了将集成电路置于降低功耗状态，将集成电路中的第一组和第二组功能单元的时钟信号置于门限。第一组功能单元的特征在于需要在集成电路内执行高速缓存一致性操作。该装置包括输入，该输入被耦合以通过集成电路外部的另外的设备将指示存储器访问的信号接收到由集成电路可访问的存储器资源。响应于该信号的断言，功率降低逻辑将时钟信号传播到第一组功能单元，以使得该组功能单元能够执行高速缓存一致性操作，这可能由外部存储器访问所必需设备。

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