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    • 2. 发明授权
    • System and method for providing error correction coding with selectively variable redundancy
    • 用于提供具有选择性可变冗余度的纠错编码的系统和方法
    • US06606727B1
    • 2003-08-12
    • US09429065
    • 1999-10-29
    • Honda YangJohn T. Gill, III
    • Honda YangJohn T. Gill, III
    • H03M1300
    • H03M13/27H03M13/15H03M13/35
    • A system and method are disclosed for providing error correction coding having a selectively variable degree of redundancy. The system and method include generating extended check symbols by performing a Reed-Solomon operation on unused check symbols that do not form a portion of an interleaved code word. An extended check symbol is generated from the unused check symbols appearing in a column of the unused check symbols. The extended check symbols are stored with the interleaved code words in a data storage device. The extended check symbols are retrieved from the data storage device with the corresponding interleaved code words. Following the decoding of the interleaved code words and the identification of uncorrectable errors therein, the extended check symbols are decoded to recover the corresponding unused check symbols for the previously uncorrectable interleaved code words. The recovered unused check symbols are added to the previously uncorrectable interleaved code words so as to increase the error correcting capability thereof. The previously uncorrectable interleaved code words having the recovered unused check symbols are then decoded and errors therein corrected accordingly.
    • 公开了一种用于提供具有选择性可变度冗余度的纠错编码的系统和方法。 该系统和方法包括通过对未形成交错码字的一部分的未使用的校验符号执行Reed-Solomon操作来产生扩展校验符号。 从出现在未使用的检查符号的列中的未使用的检查符号生成扩展检查符号。 扩展检查符号与交织的码字一起存储在数据存储装置中。 从具有对应的交错码字的数据存储装置检索扩展检查符号。 在交错码字的解码和其中的不可校正错误的识别之后,对扩展的校验符号进行解码,以恢复先前不可校正的交错码字的相应的未使用的校验符号。 恢复的未使用的校验符号被添加到先前不可校正的交错码字,以增加其纠错能力。 然后对具有恢复的未使用的校验符号的先前不可校正的交错码字进行解码,并且相应地校正其中的错误。
    • 3. 发明授权
    • Parallel Chien search circuit
    • 平行Chien搜索电路
    • US06192497B1
    • 2001-02-20
    • US09141871
    • 1998-08-27
    • Honda YangJohn T. Gill, III
    • Honda YangJohn T. Gill, III
    • H03M1303
    • H03M13/6561H03M13/1515H03M13/1545H03M13/158
    • Disclosed is a Chien search circuit for determining roots to an error locator polynomial that is defined by a set of coefficients. The circuit includes N sub-Chien search circuits, each of which is configured to sequentially evaluate a subset of field elements from a specified set of field elements. Each sub-Chien search circuit includes a set of storage elements, a set of constant multipliers, an adder, and a comparator. The set of storage elements stores a set of values, and receives and stores the set of coefficients as the set of values. One storage element is associated with each coefficient. The set of constant multipliers is coupled to receive the set of values from the set of storage elements. One constant multiplier is associated with one storage element. Each of the constant multipliers is associated with a constant field element and is configured to multiply the received value and the constant field element to generate a product. Each of the constant multipliers is coupled to feed the product back to the associated storage element for storage. The adder is coupled to receive the stored set of values from the set of storage elements for generating a sum of the set of values for a current field element being evaluated. The comparator is coupled to receive the sum for comparing the sum to a specified constant value. The comparator generates a signal indicating that the current field element is a root when the sum is equal to the specified constant value.
    • 公开了一种用于确定由一组系数定义的误差定位多项式的根的Chien搜索电路。 该电路包括N个子Chien搜索电路,每个子搜索电路被配置成从指定的一组场元素顺序地评估场元素的子集。 每个子Chien搜索电路包括一组存储元件,一组常数乘法器,一个加法器和一个比较器。 该组存储元件存储一组值,并且接收并存储该组系数作为该组值。 一个存储元件与每个系数相关联。 该组常数乘法器被耦合以从该组存储元件接收该组值。 一个常数乘数与一个存储元件相关联。 常数乘法器中的每一个与常数场元素相关联,并且被配置为将接收的值和常量场元素相乘以生成乘积。 每个常数乘法器被耦合以将产品反馈回相关联的存储元件用于存储。 加法器被耦合以从该组存储元件接收存储的一组值,以产生被评估的当前场元素的值集合的总和。 比较器被耦合以接收用于将和与指定的常数值进行比较的和。 当和等于指定的常数值时,比较器产生指示当前场元素为根的信号。
    • 7. 发明申请
    • Biometric authentication card and method of fabrication thereof
    • 生物识别卡及其制造方法
    • US20080067247A1
    • 2008-03-20
    • US11901093
    • 2007-09-14
    • Travis M. McGregorChristopher M. McGregorGregory M. McGregorJohn T. GillG. Frederick RennerGeorge K. Lund
    • Travis M. McGregorChristopher M. McGregorGregory M. McGregorJohn T. GillG. Frederick RennerGeorge K. Lund
    • G06K5/00G06K7/00
    • G06K19/07G06K19/0704G06K19/0718G06K19/07703
    • A credit card size authentication card is manufactured using innovative sensor technology, processor technology, power generation and storage, panel display and integration technology. The front of the card has a data display and an exposed, biometric sensor. Internally the card has one or more flex boards that carry low profile, surface-mounted electronic components including a processor that provides the control functions and mathematical calculations to generate a series of random personal identification numbers (PINs) in the display. The random PINs are derived from a biometric seed number obtained during initialization of the card by a discrete user. The electronic circuitry controlling and interconnecting the processor, the sensor and the display is powered by a power system including a thin film battery, a thin film power generator and a low profile power regulator. The thin film power generator preferably comprises a thin film solar collector or RF antenna circuit for energy harvesting. The thin film power generator and thin film battery are layered and preferably docked to the flex board carrying the primary components of the card. The card panels are formed from panel sheets which may be reverse printed with the top or front panel sheets having clear or translucent windows for the data display and solar collectors and die cut to expose the sensor elements.
    • 使用创新的传感器技术,处理器技术,发电和存储,面板显示和集成技术制造信用卡大小认证卡。 卡的前部具有数据显示和暴露的生物特征传感器。 在内部,卡具有一个或多个柔性板,其具有低轮廓的表面安装的电子部件,包括提供控制功能和数学计算的处理器,以在显示器中生成一系列随机个人识别号码(PIN)。 随机PIN由离散用户在卡的初始化期间获得的生物特征种子号导出。 控制和互连处理器,传感器和显示器的电子电路由包括薄膜电池,薄膜发电机和薄型功率调节器的电力系统供电。 薄膜发电机优选地包括用于能量收集的薄膜太阳能收集器或RF天线电路。 薄膜发电机和薄膜电池分层并且优选地对接到承载卡的主要部件的柔性板。 卡板由面板片形成,面板可以反向印刷,顶板或前面板具有用于数据显示的透明或半透明窗口,并且太阳能收集器和模切以露出传感器元件。
    • 9. 发明授权
    • Apparatus and method for generating interleave erasure locations from thermal asperity erasure pointers
    • 用于从热粗糙度擦除指针产生交错擦除位置的装置和方法
    • US06389571B1
    • 2002-05-14
    • US09192913
    • 1998-11-16
    • Honda YangJohn T. Gill, III
    • Honda YangJohn T. Gill, III
    • G11C2900
    • G11B20/1866G11B5/012G11B20/10009G11B20/24
    • Disclosed is a thermal asperity pointer processing apparatus and method for processing apparatus for generating erasure locations from a thermal asperity signal. The thermal asperity signal indicates an error burst in an interleaved data sector. The apparatus includes a thermal asperity pointer recorder, a storage unit, and a thermal asperity pointer processing unit. The thermal asperity pointer recorder is adapted to receive a thermal asperity signal and is configured to generate a thermal asperity event information associated with the thermal asperity signal. The thermal asperity event information includes a thermal asperity duration, a starting interleave number, and a starting interleave address of the thermal asperity signal in the interleaved data sector. The storage unit is configured to receive the thermal asperity event information from the thermal asperity pointer recorder and is configured to store the thermal asperity duration, starting interleave number, and starting interleave address associated with the thermal asperity signal. The thermal asperity pointer processing unit is coupled to receive the thermal asperity event information from the storage unit and is adapted to generate the erasure locations for interleaves corresponding to the error burst in the data sector.
    • 公开了一种用于从热凹凸信号产生擦除位置的处理装置的热凹凸指针处理装置和方法。 热绝缘信号表示交错数据扇区中的错误突发。 该装置包括热凹凸指针记录器,存储单元和热凹凸指针处理单元。 热凹凸指针记录器适于接收热凹凸信号,并被配置为产生与热凹凸信号相关联的热凹凸事件信息。 热绝缘事件信息包括交错数据扇区中的热不平坦信号的热凹凸持续时间,起始交织数和起始交织地址。 存储单元被配置为从热凹凸指针记录器接收热凹凸事件信息,并且被配置为存储热凹凸持续时间,开始交织编号和与热凹凸信号相关联的起始交织地址。 热绝缘指针处理单元被耦合以从存储单元接收热不平坦事件信息,并适于产生与数据扇区中的错误突发相对应的交织的擦除位置。