Memory card, method for allotting logical address, and method for writing data
    21.
    发明授权
    Memory card, method for allotting logical address, and method for writing data 有权
    存储卡,分配逻辑地址的方法和写入数据的方法

    公开(公告)号:US06725322B1

    公开(公告)日:2004-04-20

    申请号:US09913963

    申请日:2001-08-21

    IPC分类号: G06F1200

    摘要: Blocks and clusters are brought to correspondence thereby to erase blocks of memory area efficiently. A flash memory has its physical addresses partitioned from address 0h sequentially into blocks each having eight sectors. The data area of logical address starts at address 4Dh, which is set to the starting physical address 50h of the block which is close to the top of data area, and the data area is set sequentially to the following physical addresses. The remaining logical addresses 3D7Dh-3D7Fh are brought back to the top of physical address and set to physical addresses 0h-2h. Consequently, clusters (a cluster has 4 k bytes or 2 k bytes) of data sent from a host unit correspond to blocks of physical addresses, enabling block erasure of the flash memory, whereby the number of times of erasing operation at data writing can be reduced significantly.

    摘要翻译: 块和簇被带到对应,从而有效地擦除存储区块。 闪速存储器的物理地址从地址0h顺序分割成具有八个扇区的块。 逻辑地址的数据区域从地址4Dh开始,该地址设置为接近数据区顶部的块的起始物理地址50h,数据区被顺序地设置为下列物理地址。 剩余的逻辑地址3D7Dh-3D7Fh返回到物理地址的顶部,并设置为物理地址0h-2h。 因此,从主机单元发送的数据的簇(簇具有4k字节或2K字节)对应于物理地址块,从而能够擦除闪速存储器,从而数据写入时的擦除操作次数可以是 显着减少。

    Film apparatus having magnetic recording surface
    30.
    发明授权
    Film apparatus having magnetic recording surface 失效
    具有磁记录面的胶片装置

    公开(公告)号:US5351102A

    公开(公告)日:1994-09-27

    申请号:US99311

    申请日:1993-07-30

    IPC分类号: G03B17/02 G03B17/30 G03B17/24

    摘要: A camera using a film having a magnetic surface for recording magnetic data thereon. The camera includes a magnetic head for writing magnetic data onto the magnetic surface and for reading magnetic data recorded thereon. A pad movable with respect to the magnetic head is opposed to the magnetic head. The film is sandwiched between the pad and the magnetic head when magnetic data is written onto the magnetic surface of the film and the magnetic data recorded thereon is read. The pad is driven by a motor for driving a film feeding mechanism so that the pad moves away from the film feeding path when data writing and data reading is not carried out. A planetary gear mechanism connects the motor selectively to a pad driving mechanism and a film feeding mechanism.

    摘要翻译: 一种使用具有用于在其上记录磁数据的磁性表面的胶片的照相机。 相机包括用于将磁数据写入磁表面并用于读取记录在其上的磁数据的磁头。 相对于磁头可移动的衬垫与磁头相对。 当将磁数据写入到胶片的磁性表面上并且读取记录在其上的磁数据时,胶片夹在磁鼓和磁头之间。 垫片由用于驱动胶片馈送机构的电动机驱动,使得当不执行数据写入和数据读取时,垫片从胶片馈送路径移开。 行星齿轮机构将电动机选择性地连接到衬垫驱动机构和胶片供给机构。