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    Reducing false positives in configuration error detection for programmable devices
    3.
    发明授权
    Reducing false positives in configuration error detection for programmable devices 有权
    减少可编程器件配置错误检测中的误报

    公开(公告)号：US07620876B2

    公开(公告)日：2009-11-17

    申请号：US11407519

    申请日：2006-04-19

    Applicant: David Lewis ,  Robert Blake ,  Richard G. Cliff ,  Srinivas T. Reddy

    Inventor： David Lewis ,  Robert Blake ,  Richard G. Cliff ,  Srinivas T. Reddy

    IPC: G11C29/00

    CPC classification number: G11C29/42 ,  G06F11/1008 ,  G11C29/52

    Abstract: A device reduces false positive memory error detections by using a masking unit and sensitivity mask data to exclude unused portions of the memory from the error detection computations. A device includes an error detection unit to read data from the memory and verify data integrity. The sensitivity mask data indicates unused portions of the memory. Unused portions of the memory may correspond with configuration data for unused portions of a programmable device. Each bit of the sensitivity mask data may indicate the usage of one or more bits of the data from the memory. In response to the mask data, the masking unit sets data from the unused portions of the memory to values that do not change the result of the error detection computations. This prevents any errors in data from the unused portions of the memory from raising an error signal.

    Abstract translation: 设备通过使用掩蔽单元和灵敏度掩码数据来减少假阳性存储器错误检测，以从错误检测计算中排除存储器的未使用部分。 一种设备包括一个错误检测单元，用于从存储器读取数据并验证数据完整性。 灵敏度掩码数据指示存储器的未使用部分。 存储器的未使用部分可以对应于可编程设备的未使用部分的配置数据。 灵敏度掩码数据的每一位可以指示来自存储器的数据的一位或多位的使用。 响应于掩模数据，掩蔽单元将来自存储器的未使用部分的数据设置为不改变错误检测计算结果的值。 这防止来自存储器的未使用部分的数据中的任何错误引起错误信号。

    Programmable logic with programmable volatility
    7.
    发明授权
    Programmable logic with programmable volatility 有权
    具有可编程波动性的可编程逻辑

    公开(公告)号：US07154297B1

    公开(公告)日：2006-12-26

    申请号：US10905832

    申请日：2005-01-21

    Applicant: Rafael C. Camarota ,  Robert Blake

    Inventor： Rafael C. Camarota ,  Robert Blake

    IPC: H03K19/177 ,  G06F7/38

    CPC classification number: H03K19/1776

    Abstract: Volatility of a programmable logic device (PLD) or field programmable gate array (FPGA) is selectable to be volatile or nonvolatile. In the volatile mode, configuration or other data of the integrated circuit are lost once power is removed from the integrated circuit. In the nonvolatile mode, configuration or other data is retained even when power is removed from the integrated circuit. Upon power-up, in nonvolatile mode, the integrated circuit does not need external data. In an embodiment, the mode, whether volatile or nonvolatile, may be selected during manufacturing. In other embodiment, the mode may be selected by other means, such as by the user.

    Abstract translation: 可编程逻辑器件（PLD）或现场可编程门阵列（FPGA）的易失性可选择为易失性或非易失性。 在易失性模式中，一旦从集成电路移除电源，集成电路的配置或其他数据就会丢失。 在非易失性模式中，即使从集成电路去除电力，也保留配置或其他数据。 上电时，在非易失性模式下，集成电路不需要外部数据。 在一个实施例中，可以在制造期间选择无论是易失性还是​​非易失性的模式。 在另一个实施例中，可以通过其它方式，例如由用户来选择该模式。

    Electronically-controlled mechanically-damped off-resonant light beam scanning mechanism and code symbol readers employing the same
    10.
    发明申请
    Electronically-controlled mechanically-damped off-resonant light beam scanning mechanism and code symbol readers employing the same 失效
    电子控制的机械阻尼非共振光束扫描机构和采用其的代码符号读取器

    公开(公告)号：US20050236486A1

    公开(公告)日：2005-10-27

    申请号：US11098584

    申请日：2005-04-04

    Applicant: Robert Blake ,  Charles Naylor ,  Stephen Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

    Inventor： Robert Blake ,  Charles Naylor ,  Stephen Colavito ,  Thomas Amundsen ,  Thomas Carullo ,  C. Harry Knowles

    IPC: G02B5/08 ,  G02B26/00 ,  G06F17/30 ,  G06K7/10

    CPC classification number: G06K7/10643 ,  G06F17/30879

    Abstract: Disclosed is laser beam scanning apparatus in the form of an electronically-controlled mechanically-damped off-resonant laser beam scanning mechanism. The scanning mechanism comprises an etched scanning element having a small flexible gap region of closely-controlled dimensions disposed between an anchored base portion and a laser beam deflecting portion The light beam deflecting portion supports a permanent magnet and a light beam deflecting element (e.g., mirror or hologram). A reversible magnetic force field producing device (e.g., an electromagnet) is placed in close proximity with the permanent magnet so that it may be forcibly driven into oscillation in response to electrical current flowing through the electromagnet. The resonant frequency of oscillation of the laser beam deflecting portion relative to the anchored base portion is determined by the closely controlled dimensions of the flexible gap region set during manufacture. The steady-state frequency of oscillation of the laser beam deflecting portion is determined by the frequency of polarity reversal of the electromagnet, which is electronically controlled by the polarity of electrical current supplied thereto. In the illustrative embodiments, the forcing frequency of the electromagnet is selected to be at least ten percent off (i.e., greater or less than) the natural resonant frequency of the laser beam deflecting portion of the scanning element. The steady-state frequency of oscillation can be set at the time of manufacture to be any one of a very large range of values (e.g., 25-127 Hz) for use in both low-speed and high-speed laser scanning systems.

    Abstract translation: 公开了电子控制机械阻尼非共振激光束扫描机构形式的激光束扫描装置。 扫描机构包括蚀刻的扫描元件，其具有设置在锚定的基部和激光束偏转部分之间的紧密控制的尺寸的小的柔性间隙区域。光束偏转部分支撑永磁体和光束偏转元件（例如，镜 或全息图）。 可逆磁场产生装置（例如，电磁体）被放置成与永磁体紧密相邻，使得其可以响应于流过电磁体的电流被强制地驱动成振荡。 激光束偏转部分相对于锚定基部的振荡的谐振频率由制造期间设置的柔性间隙区域的紧密控制的尺寸确定。 激光束偏转部的振荡的稳态频率由电磁体的极性反转的频率决定，该电磁体由供给的电流的极性进行电子控制。 在说明性实施例中，电磁体的强制频率被选择为扫描元件的激光束偏转部分的固有谐振频率的至少百分之十（即大于或小于）。 振荡的稳态频率可以在制造时设定为用于低速和高速激光扫描系统的非常大范围的值（例如，25-127Hz）中的任何一个。

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