公开(公告)号：US20050063265A1

公开(公告)日：2005-03-24

申请号：US10938146

申请日：2004-09-10

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B20/10 ,  G11B5/09 ,  G11B7/00 ,  G11B7/004 ,  G11B7/005 ,  G11B7/007 ,  G11B20/12 ,  G11B20/18

CPC分类号： G11B20/18 ,  G11B7/0053 ,  G11B7/00736 ,  G11B2020/10972

摘要： A reproducing device includes a detection circuit and an integration circuit. The detection circuit detects a push-pull signal PP. The integration circuit carries out integration processing with respect to one or greater frames of the push-pull signal, and carries out binarization processing with respect to integration results thus obtained, thereby detecting sub data. In the integration circuit, the more the frames to be used for detecting sub data is, the higher the accuracy of the detected sub data is. The reproducing device further includes a control circuit for controlling the total number of the frames to be used for generating valid sub data in the integration circuit. The control circuit controls the total number of the frames in accordance with a result of an error correction made by an error correction circuit.

摘要翻译： 再现装置包括检测电路和积分电路。 检测电路检测推挽信号PP。 积分电路相对于推挽信号的一个或多个帧进行积分处理，并对所得到的积分结果进行二值化处理，从而检测子数据。 在积分电路中，用于检测子数据的帧越多，检测到的子数据的精度越高。 再现装置还包括控制电路，用于控制用于在积分电路中产生有效子数据的帧的总数。 控制电路根据由纠错电路进行的纠错的结果来控制帧的总数。

公开(公告)号：US06065094A

公开(公告)日：2000-05-16

申请号：US900173

申请日：1997-07-25

申请人： Jun Akiyama

发明人： Jun Akiyama

IPC分类号： G11B20/00 ,  G11B20/10 ,  G06F13/16

CPC分类号： G11B20/10527 ,  G11B20/00007

摘要： A compressed data storage apparatus is provided with a compressing circuit for generating compressed data by compressing digital data from a camera section, a buffer memory for storing the compressed data temporarily, a disk device for storing the compressed data stored in the buffer memory at a rate faster than a rate at which the buffer memory stores the compressed data, and a system controller for increasing a compression ratio of the compressing circuit when detecting that the disk device has become unable to record the data. According to the above arrangement, in the event that the disk device becomes unable to store the data due to vibrations or an impact, the data compression ratio is increased, whereby the rate at which the buffer memory stores the data is reduced. Consequently, the capacity of the buffer memory can be reduced, and therefore, it has become possible to provide an inexpensive compressed data storage apparatus with excellent resistance to vibrations.

摘要翻译： 压缩数据存储装置具有压缩电路，用于通过压缩来自相机部分的数字数据，用于临时存储压缩数据的缓冲存储器来产生压缩数据，用于以一定速率存储缓冲存储器中的压缩数据的盘装置 比缓冲存储器存储压缩数据的速率快;以及系统控制器，用于在检测到盘装置不能记录数据时增加压缩电路的压缩比。 根据上述结构，在磁盘装置由于振动或冲击而不能存储数据的情况下，数据压缩率增加，缓冲存储器存储数据的速率降低。 因此，可以减少缓冲存储器的容量，因此，可以提供具有优异的抗振动性的便宜的压缩数据存储装置。