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    • 26. 发明申请
    • LIGHTING A CHOLESTERIC LIQUID CRYSTAL DISPLAY APPARATUS
    • 照明液晶液晶显示器
    • US20090174643A1
    • 2009-07-09
    • US12301659
    • 2007-05-18
    • Amir Ben ShalomChristopher John Hughes
    • Amir Ben ShalomChristopher John Hughes
    • G09G3/36
    • G09G3/18G09G3/2011G09G3/2014G09G3/3406G09G3/36G09G2300/023G09G2300/0486G09G2310/061G09G2310/065G09G2320/0238G09G2320/0247G09G2360/144
    • A display apparatus comprises a cholesteric liquid crystal display device having cells comprising a layer of cholesteric liquid crystal material and an electrode arrangement capable of providing independent driving of a plurality of pixels across the layer of cholesteric liquid crystal material. A drive circuit generates drive signals supplied to the pixels to drive them into states reflectances in accordance with an image signal. The drive signals may have a waveform shaped to drive the respective pixels into the homeotropic state and the planar state alternately within successive drive periods for respective periods of time which are varied to provide an average reflectance as perceived by a viewer in accordance with the image signal. A light source illuminates the display device and is supplied with power by a power circuit. The power circuit supplies either: a) DC power, or b) AC power at a supply frequency FS in accordance with the equation |2FS−FH|≧FT where FH is the frequency at which the pixels are driven into the planar state. This reduces the perception of flicker in a displayed image and FT is the flicker fusion threshold.
    • 显示装置包括胆甾醇型液晶显示装置,其具有包含胆甾醇型液晶材料层的电池单元和能够在胆甾型液晶材料层上独立驱动多个像素的电极装置。 驱动电路产生提供给像素的驱动信号,以根据图像信号驱动它们进入状态反射。 驱动信号可以具有波形,以在相应的驱动周期期间交替地将各个像素驱动到垂直状态和平面状态,这些时间段被改变以提供根据图像信号的观察者感知的平均反射率 。 光源照亮显示装置,并由电源电路供电。 电源电路还提供:a)直流电源,或b)根据等式| 2FS-FH |> = FT的电源频率FS的交流电源,其中FH是像素驱动进入平面状态的频率。 这降低了显示图像中闪烁的感知,FT是闪烁融合阈值。
    • 27. 发明申请
    • Retromodulation-based data communication
    • 基于重新调制的数据通信
    • US20070177880A1
    • 2007-08-02
    • US10598910
    • 2005-03-15
    • Nir KarasikovMichael SlatkinAmir Ben-ShalomDavid Tamir
    • Nir KarasikovMichael SlatkinAmir Ben-ShalomDavid Tamir
    • H04B10/00
    • H04B10/2587H04B10/1121
    • A data communication system comprising a transceiver unit for retromodulated optical communication with at least one of a plurality of retromodulator units, the transceiver unit comprising at least one of a plurality of transceivers, the transceivers transmitting diffused radiant energy at different angles covering a predetermined three-dimensional area, wherein each transceiver is enabled to set up and execute communication with at least one retromodulator unit located within its coverage area. Furthermore, a retromodulator comprising multiple arrays of lenslets or spherically arranged lenslets is provided for achieving a wide angle of acceptance. Further more a number of novel applications based on the data communication system are provided, including a remote wireless network connection for a portable computing device, a smart card for remote wireless identification, remote data collection, and remote downloading of digital photographs.
    • 一种数据通信系统,包括用于与多个重调谐器单元中的至少一个重新调制光通信的收发器单元,所述收发器单元包括多个收发器中的至少一个收发器,所述收发器以不同的角度发射扩散的辐射能量, 其中每个收发器能够建立并执行与位于其覆盖区域内的至少一个解调器单元的通信。 此外,提供了包括多个小透镜阵列或球形布置的小透镜的再调节器,以实现广角的接受。 提供了更多的基于数据通信系统的新颖应用,包括用于便携式计算设备的远程无线网络连接,用于远程无线识别的智能卡,远程数据采集和数字照片的远程下载。