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    Circuits with dynamically biased active loads
    1.
    发明授权
    Circuits with dynamically biased active loads 失效
    具有动态偏置有功负载的电路

    公开(公告)号：US5909127A

    公开(公告)日：1999-06-01

    申请号：US601628

    申请日：1996-02-14

    申请人： Dale Jonathan Pearson ,  Scott Kevin Reynolds

    发明人： Dale Jonathan Pearson ,  Scott Kevin Reynolds

    IPC分类号： H03K19/013 ,  H03K19/017 ,  H03K19/086 ,  H03K19/094 ,  H03K19/173

    CPC分类号： H03K19/01721 ,  H03K19/0136 ,  H03K19/086 ,  H03K19/09432 ,  H03K19/1738

    摘要： This invention provides a circuit and method to replace the passive resistive or statically biased active load devices with dynamically biased active load devices. This allows the load devices to present an effective load which varies depending on the state of the circuit output. The effective load and the time rate of change of the effective load can be dynamically optimized to improve circuit performance with changing conditions. The effective load is varied according to the state of the circuit by the use of time-delayed negative feedback. The biasing of the load devices is also capable to control the logic swing of the circuit. A bias generating circuit employing a dynamically biased active load is described. This provides a method for a family of logic circuits, especially CML circuits, to operate at low voltage and low power at high switching speeds, having symmetrical rise and fall times and well defined logic signal swings. The output is sampled and maintained at near ideal bias voltage with a voltage follower type circuit which provides a gain of less than unity and finite delay. Particular circuit implementations using various semiconductor technologies are described and many others are possible. Although the invention may find primary use in VLSI logic circuits, especially those requiring high speed and low power, it is also shown to be useful in analog circuits. Alternate circuit configurations for dynamically biased active load devices are described.

    摘要翻译： 本发明提供一种用动态偏置的有源负载装置代替被动电阻或静态偏置有源负载装置的电路和方法。 这允许负载装置呈现根据电路输出的状态而变化的有效负载。 可以动态优化有效负载和有效负载的时间变化率，以改善电路性能。 根据电路的状态通过使用时间延迟的负反馈来改变有效负载。 负载装置的偏置也能够控制电路的逻辑摆幅。 描述了采用动态偏置的有源负载的偏置发生电路。 这提供了一种用于一系列逻辑电路，特别是CML电路的方法，其以高开关速度在低电压和低功率下工作，具有对称的上升和下降时间以及良好定义的逻辑信号摆幅。 输出采用电压跟随器电路采样并保持在接近理想的偏置电压，该电路提供小于一个和有限延迟的增益。 描述使用各种半导体技术的特定电路实现方式，并且许多其他实施方式是可能的。 尽管本发明可能在VLSI逻辑电路中发现主要用途，特别是那些需要高速度和低功率的逻辑电路，但是它也被证明在模拟电路中是有用的。 描述了用于动态偏置的有源负载装置的备用电路配置。

    Digital instant camera having a printer
    4.
    发明授权
    Digital instant camera having a printer 失效
    具有打印机的数字即时相机

    公开(公告)号：US06628333B1

    公开(公告)日：2003-09-30

    申请号：US08967853

    申请日：1997-11-12

    申请人： Sudhir Muniswamy Gowda ,  Mary Yvonne Lanzerotti ,  Dale Jonathan Pearson ,  Hon-Sum Philip Wong

    发明人： Sudhir Muniswamy Gowda ,  Mary Yvonne Lanzerotti ,  Dale Jonathan Pearson ,  Hon-Sum Philip Wong

    IPC分类号： H04N5222

    CPC分类号： H04N1/2154 ,  H04N1/00347 ,  H04N1/0044 ,  H04N1/00538 ,  H04N1/2112 ,  H04N2101/00 ,  H04N2201/0082 ,  H04N2201/0084 ,  H04N2201/0089

    摘要： In an illustrative embodiment, an instant camera is provided which includes an imager for receiving an image of an object to be photographed. The imager outputs a signal corresponding to the received image, and a memory device stores the signal. A printer prints instant film photographs corresponding to received or stored images, and has the capability to print at least one image on a single piece of instant film. A preview unit has at least one display for displaying an image corresponding to a received or stored image. A controller, in communication with the imager, the memory device, the printer, and the preview unit, controls the transfer of the signal from the imager to the memory device, from the memory device to the printer, and from the memory device to the preview unit.

    摘要翻译： 在说明性实施例中，提供了一种即时相机，其包括用于接收待拍摄对象的图像的成像器。 成像器输出与接收到的图像相对应的信号，存储器件存储信号。 打印机打印对应于接收或存储的图像的即时胶片照片，并且能够在单片即时胶片上打印至少一幅图像。 预览单元具有用于显示与所接收或存储的图像相对应的图像的至少一个显示器。 与成像器，存储设备，打印机和预览单元通信的控制器控制从成像器到存储器设备的信号从存储设备到打印机以及从存储设备传输到存储设备 预览单元。

    Transmissive liquid crystal cell with trench capacitor
    5.
    发明授权
    Transmissive liquid crystal cell with trench capacitor 失效
    带沟槽电容器的透射式液晶单元

    公开(公告)号：US6014189A

    公开(公告)日：2000-01-11

    申请号：US749746

    申请日：1996-11-15

    申请人： Russell Alan Budd ,  George Liang-Tai Chiu ,  Dale Jonathan Pearson

    发明人： Russell Alan Budd ,  George Liang-Tai Chiu ,  Dale Jonathan Pearson

    IPC分类号： G02F1/1362 ,  G02F1/1343

    CPC分类号： G02F1/136213 ,  G02F1/136286

    摘要： An apparatus and method for providing a display cell structure based on the transmissive liquid crystal technology with a useful aperture ratio even as the cell size shrinks to less than 20 microns. The invention overcomes a problem of the prior art wherein the fractional area transmitting the light of the conventional designs becomes unacceptably low due to the aperture reducing opaque storage capacitor. This reduction in aperture ratio is removed in this invention by hiding the trench capacitor below the row and column x,y lines. The cell storage capacitor is formed using a vertical trench capacitor in SOI. Although useful even in standard display sizes and configurations, the invention is particularly useful for head-mounted displays and/or optical projection displays at the UXGA form factor for both monochromatic and color displays. Alternate capacitor configurations are described.

    摘要翻译： 一种用于提供基于透射型液晶技术的显示单元结构的装置和方法，其具有有用孔径比，即使单元尺寸缩小到小于20微米。 本发明克服了现有技术的问题，其中透射传统设计的光的分数区域由于减小不透明存储电容器的孔径而变得不可接受地低。 在本发明中通过将沟槽电容器隐藏在行和列x，y线下方来消除开口率的减小。 在SOI中使用垂直沟槽电容器形成电池存储电容器。 尽管在标准显示器尺寸和配置中也是有用的，但本发明对于单色和彩色显示器的UXGA外形尺寸下的头戴式显示器和/或光学投影显示器特别有用。 描述备用电容器配置。

    Transmissive cell for ultra small pixel applications
    7.
    发明授权
    Transmissive cell for ultra small pixel applications 失效
    用于超小像素应用的透射单元

    公开(公告)号：US5999234A

    公开(公告)日：1999-12-07

    申请号：US834183

    申请日：1997-04-15

    申请人： Russell Alan Budd ,  George Liang-Tai Chiu ,  Dale Jonathan Pearson

    发明人： Russell Alan Budd ,  George Liang-Tai Chiu ,  Dale Jonathan Pearson

    IPC分类号： G02F1/1334 ,  G02F1/1343 ,  G02F1/1362

    CPC分类号： G02F1/134363 ,  G02F1/1334 ,  G02F1/136213 ,  G02F2001/13347

    摘要： A method and structure is presented for a display with reduced size pixels while retaining the transmissive approach. This enables continued use the least expensive transmission optics available. In an embodiment, it employs back-end-of-the-line vertical cells built on top of the row and column x, y lines of the pixels. In a PDLC type display embodiment each vertical cell is filled with PDLC which operates in a normally black mode known as the PDLC reverse mode. When the pixel control voltage is set ON, the liquid crystal is perpendicular to the light path resulting in a light pass through providing a bright state. When the control voltage is set OFF, the liquid crystals are randomly oriented, only the scattered light goes through the cell, so the pixel is in its OFF state. PDLC used here has two advantages. Firstly, the PDLC requires no rubbing. It is difficult to rub individual cell walls. Secondly, the use of both polarizations by the PDLC increases its luminous efficiency. Various embodiments are described for implementing vertical active electrodes and common ground electrodes. Advantages are described for employing the vertical electrodes with various implementations of a hidden storage capacitor.

    摘要翻译： 为保持透射方式的像素尺寸减小的显示器提供了一种方法和结构。 这使得可以继续使用可用的最便宜的传输光学器件。 在一个实施例中，它使用构建在像素的行和列x，y行的顶部上的后端行垂直单元。 在PDLC型显示实施例中，每个垂直单元填充有PDLC，PDLC以常规黑模式工作，称为PDLC反向模式。 当像素控制电压设置为ON时，液晶垂直于光路，导致光通过，提供亮状态。 当控制电压设定为OFF时，液晶随机取向，只有散射光通过电池，因此像素处于关闭状态。 这里使用的PDLC有两个优点。 首先，PDLC不需要摩擦。 难以擦拭单个细胞壁。 其次，通过PDLC的两极化的使用增加了发光效率。 描述了用于实现垂直有源电极和公共接地电极的各种实施例。 描述了采用具有隐藏存储电容器的各种实施方式的垂直电极的优点。