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    • 1. 发明授权
    • Zone miss recovery system for disk drives using a modified constant
angular velocity (MCAV) method of data recording
    • 使用改进的恒定角速度(MCAV)数据记录方法的磁盘驱动器的区域未命中恢复系统
    • US5245595A
    • 1993-09-14
    • US520
    • 1993-01-04
    • Masaaki Yasukawa
    • Masaaki Yasukawa
    • G11B7/007G11B7/085G11B11/105G11B20/00
    • G11B20/00G11B11/105G11B11/10563G11B11/10595G11B7/00745G11B7/08505G11B2020/10916
    • A disk drive zone access method for recovering from a zone miss of a disk drive head(s) is used with media that has a plurality of zones each having different data recording frequencies. Data is read with a variable reference synchronizing frequency that can be set to match any one of the data recording frequencies. The method comprises 1) defining a memory space to stores zone miss history in alternative memory spaces according to the head seek direction at the time of a zone miss; 2) referencing the one zone miss history that corresponds to the present head seek direction; 3) estimating a candidate zone where the head is/are most likely to be, based on the zone miss history; 4) setting the variable reference synchronizing frequency to the data recording frequency of the candidate zone; and 5) updating zone miss history in the memory space with the present zone miss data according to the head seek direction at the time of the zone miss.
    • 用于从磁盘驱动器磁头的区域恢复的磁盘驱动器区域访问方法与具有多个区域的介质一起使用,每个区域具有不同的数据记录频率。 用可变参考同步频率读取数据,可以将其设置为匹配数据记录频率中的任一个。 该方法包括:1)根据区域丢失时的头部搜索方向,定义存储器空间以将区域丢失历史存储在备用存储器空间中; 2)参考对应于当前头部搜索方向的一个区域丢失历史; 3)基于区域遗漏历史来估计头部/最有可能的候选区域; 4)将可变参考同步频率设置为候选区域的数据记录频率; 以及5)根据区域丢失时的头部搜索方向,更新存储器空间中的区域未命中历史,并使用当前区域丢失数据。
    • 2. 发明授权
    • Method of reproducing image data in network projector system, and network projector system
    • 网络投影机系统中再现图像数据的方法和网络投影仪系统
    • US06437786B1
    • 2002-08-20
    • US09342219
    • 1999-06-29
    • Masaaki Yasukawa
    • Masaaki Yasukawa
    • G06T1570
    • G06F3/14
    • The invention provides a method of reproducing image data in a network projector system, and a network projector system, which can conveniently process image data that includes moving pictures at low cost and display images through a projector. A network projector system of this invention is structured by servers, a projector, and a network which connects the servers and the projector. While deleting unnecessary data, the projector downloads parts of image data to be displayed and an application from specified servers, processes the image data, and forms and displays an image.
    • 本发明提供一种在网络投影仪系统中再现图像数据的方法,以及网络投影仪系统,其可以方便地以低成本处理包括运动图像的图像数据并通过投影仪显示图像。 本发明的网络投影仪系统由服务器,投影仪和连接服务器和投影机的网络构成。 在删除不必要的数据的同时,投影机将从指定的服务器下载部分要显示的图像数据和应用程序,处理图像数据,并形成和显示图像。