METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR DIAGNOSING A SCAN CHAIN FAILURE EMPLOYING FUSES COUPLED TO THE SCAN CHAIN
    21.
    发明申请
    METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR DIAGNOSING A SCAN CHAIN FAILURE EMPLOYING FUSES COUPLED TO THE SCAN CHAIN 失效
    用于诊断与扫描链耦合的熔丝的扫描链失败的方法,装置和计算机程序产品

    公开(公告)号:US20080091999A1

    公开(公告)日:2008-04-17

    申请号:US11956480

    申请日:2007-12-14

    IPC分类号: G01R31/28 G06F11/25

    CPC分类号: G06F11/2215

    摘要: A method, apparatus and computer program product are provided implementing a scan chain diagnostics technique. The diagnostics technique includes employing fuses coupled to latches of the scan chain to load a known logic value into the latches at known locations of the scan chain, and then unloading values from the scan chain, and if the scan chain is defective (for example, based on the unloaded logic values), then localizing a defect in the scan chain from the unloaded logic values by comparison thereof with the known locations of the latches of the scan chain loaded with the known logic value via the fuses. The scan chain may be predesigned with fuses spaced periodically across the chain every n latches to facilitate subsequent localization of a detected defect in the scan chain.

    摘要翻译: 提供了实现扫描链诊断技术的方法,装置和计算机程序产品。 诊断技术包括使用耦合到扫描链的锁存器的熔丝将已知逻辑值加载到扫描链的已知位置处的锁存器中,然后从扫描链中卸载值,并且如果扫描链有缺陷(例如, 基于卸载的逻辑值),然后通过与已加载逻辑值的扫描链中的缺陷通过经由保险丝加载了已知逻辑值的扫描链的锁存器的已知位置进行比较来定位扫描链中的缺陷。 可以使用每n个锁存器在链上周期性间隔的保险丝对扫描链进行预先设计,以便于扫描链中检测到的缺陷的随后定位。

    Disk drive with fast error correction validation
    24.
    发明授权
    Disk drive with fast error correction validation 失效
    具有快速纠错验证的磁盘驱动器

    公开(公告)号:US5691994A

    公开(公告)日:1997-11-25

    申请号:US436516

    申请日:1995-05-08

    IPC分类号: G11B20/18 G11C29/00

    CPC分类号: G11B20/1866

    摘要: An intelligent disk drive employing a controller which performs high speed error correction and miscorrection detection using a finite field processor. The error correction code is defined over a finite field and the error detection code is defined over an extension field of the finite field. The finite field processor performs calculation over both the finite field and extension field to provide high speed error correction and correction validation.

    摘要翻译: 一种采用控制器的智能磁盘驱动器,其使用有限场处理器执行高速误差校正和误差检测。 纠错码是在有限域上定义的,错误检测码是在有限域的扩展域上定义的。 有限域处理器对有限域和扩展域进行计算,以提供高速纠错和校正验证。