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    • 93. 发明授权
    • Dynamic multifocal spectacle frame
    • 动态多焦镜架
    • US07316478B2
    • 2008-01-08
    • US11694632
    • 2007-03-30
    • Parikumar PeriasamySadagopan Karthiekeyan Arcot
    • Parikumar PeriasamySadagopan Karthiekeyan Arcot
    • G02C7/08
    • G02C5/00G02C7/06G02C7/08G02C9/02G02C2200/08
    • This invention pertains to an attachment for bifocal eyeglasses which is a dynamic frame fitted with the lens for intermediate vision which will lie in front of the middle one third of the bifocal lens during computer use providing three zones of vision at a time without changing the head position or changing to a separate computer eye glass. This attachment along with the bifocal eye glass enables the optical centers of the distant vision and intermediate vision lens to overlap with each other falling on the visual axis, coinciding with the pupillary center of the eye at the primary head position overcoming strain, distortions and aberrations. This dynamic frame is locked at the side of the main frame with the help of press locks when ‘not in use’. This invention makes long hours of computer work comfortable and helps to overcome computer vision syndrome.
    • 本发明涉及一种用于双焦点眼镜的附件,其是装配有用于中间视觉的透镜的动态框架,其在计算机使用期间将位于双焦点透镜的中间三分之一的前面,一次提供三个视觉区域而不改变头部 位置或更换为单独的计算机眼镜。 这种附件与双焦眼镜一起使得远视觉和中间视觉透镜的光学中心彼此重叠,落在视轴上,与克服应变,畸变和像差的主要头部位置处的眼睛的瞳孔中心重合 。 当“不使用”时,通过按压锁,该动态框架锁定在主框架的侧面。 本发明使计算机工作长时间舒适,有助于克服计算机视觉综合征。
    • 99. 发明授权
    • 3-D rendering engine with embedded memory
    • 具有嵌入式内存的3-D渲染引擎
    • US07248266B2
    • 2007-07-24
    • US10776032
    • 2004-02-10
    • Mika Henrik Tuomi
    • Mika Henrik Tuomi
    • G09G5/39G06F13/14G06F12/10
    • G06T1/60G06T15/005
    • A 3-D rendering engine with embedded memory a graphics engine. A graphics engine is disclosed that includes a rendering engine for receiving graphics primitives and converting them to pixel information for transfer to a display, The rendering engine is operable to access memory locations with multiple memory access requests for a Read or a Write operation and operable in a first address space. A plurality of memory blocks are provided, each individually accessible and all configured in a virtual address space different than said first address space. A memory mapping device is provided for mapping each of the memory requests to the virtual address space. A pipeline engine is operable to pipeline the mapped memory access requests for both Read and Write operations in accordance with a predetermined pipelining scheme. The memory access requests are received in parallel and processed asynchronously, such that access to more than one of the memory blocks can occur at substantially the same time.
    • 具有嵌入式内存的3-D渲染引擎和图形引擎。 公开了一种图形引擎,其包括用于接收图形原语并将其转换为用于传送到显示器的像素信息的渲染引擎。该渲染引擎可操作以访问具有用于读取或写入操作的多个存储器访问请求的存储器位置,并且可操作 第一个地址空间。 提供了多个存储块,每个存储块可单独访问,并且全部配置在与所述第一地址空间不同的虚拟地址空间中。 提供存储器映射设备用于将每个存储器请求映射到虚拟地址空间。 流水线引擎可操作以根据预定的流水线方案来管理对读和写操作的映射的存储器访问请求。 存储器访问请求被并行地接收并且被异步地处理,使得对多个存储器块的访问可以在大致相同的时间发生。
    • 100. 发明授权
    • PID based controller for DC—DC converter with post-processing filters
    • 基于PID的控制器,用于具有后处理滤波器的DC-DC转换器
    • US07245512B2
    • 2007-07-17
    • US11096598
    • 2005-03-31
    • Ka Y. LeungKafai LeungJinwen Xiao
    • Ka Y. LeungKafai LeungJinwen Xiao
    • H02M3/335
    • H02M3/3376H02M3/33561H02M3/33592H02M2001/0012Y02B70/1475
    • A digital PID controller for controlling the operation of a switching power converter is disclosed. A data converter is provided for converting the analog sense voltage to a digital sense voltage. A difference circuit then determines the difference between the digital sense voltage and a reference voltage as a digital error voltage, which reference voltage represents a desired output DC voltage for the power converter. A digital compensator processes the digital error voltage. The digital compensator includes a PID compensation network for compensating the digital error signal with a discrete time PID control law and a postprocessing filter for processing the output of the PID compensation network, comprised of a sinc filter with variable parameters to define the operating characteristics thereof, such that a first notch associated therewith can be placed at a desired frequency. A switching control signal generator generates switching control signals for controlling the operation of the power converter, wherein the digital compensator and the switching control signal generator operate to minimize the digital error signal. A controller for controls the operation the digital compensator to define the operating characteristics of the sinc filter.
    • 公开了一种用于控制开关电源转换器的操作的数字PID控制器。 提供了一种数据转换器,用于将模拟检测电压转换为数字检测电压。 然后,差分电路将数字感测电压和参考电压之间的差作为数字误差电压确定,该参考电压表示功率转换器的期望的输出直流电压。 数字补偿器处理数字误差电压。 数字补偿器包括用于利用离散时间PID控制定律补偿数字误差信号的PID补偿网络和用于处理PID补偿网络的输出的后处理滤波器,其包括具有可变参数的sinc滤波器以限定其操作特性, 使得与其相关联的第一切口可以以期望的频率放置。 开关控制信号发生器产生用于控制功率转换器的操作的开关控制信号,其中数字补偿器和开关控制信号发生器操作以最小化数字误差信号。 控制器,用于控制数字补偿器的操作,以定义正弦滤波器的工作特性。