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    • 1. 发明授权
    • Recording/reproducing apparatus and servo-information recording method
    • 记录/再现装置和伺服信息记录方法
    • US5978170A
    • 1999-11-02
    • US865552
    • 1997-05-29
    • Yasunori IzumiyaGen OhshimaTaturo Sasamoto
    • Yasunori IzumiyaGen OhshimaTaturo Sasamoto
    • G11B20/12G11B5/55G11B5/596G11B21/08G11B21/10G11B27/10G11B5/09
    • G11B5/5526G11B5/59644G11B5/59655G11B5/59688
    • An index determining unit determines that a current position in a disk medium corresponds to a true index when reaching a true index pattern of servo information recorded in the disk medium. The determination is used for reading predetermined servo information so as to perform a servo control operation of a disk reading/writing head. The disk medium has the true index pattern in a first portion of the disk medium and also untrue index patterns of servo information in a predetermined number of second portions in proximity to the first portion along a track direction. The true index pattern and the untrue index patterns form a predetermined sequence. The index determining unit comprises a reading unit for reading the servo information recorded in the disk medium; a storing unit for storing the read servo information in series; and a determining unit for determining that a current position in the disk medium corresponds to the true index when the stored servo information includes a sequence which is different from the predetermined sequence by a predetermined error.
    • 索引确定单元当达到记录在盘介质中的伺服信息的真实索引模式时,确定盘介质中的当前位置对应于真实索引。 该确定用于读取预定的伺服信息,以执行盘读/写头的伺服控制操作。 磁盘介质在磁盘介质的第一部分中具有真实的索引图案,并且还沿着沿着磁道方向的第一部分附近的预定数量的第二部分中的伺服信息的索引图案是不正确的。 真实的索引图案和不真实的索引图案形成预定的顺序。 索引确定单元包括用于读取记录在盘介质中的伺服信息的读取单元; 存储单元,用于串行存储读取的伺服信息; 以及确定单元,用于当所存储的伺服信息包括与预定序列不同的序列预定误差时,确定盘介质中的当前位置对应于真实索引。
    • 2. 发明申请
    • STORAGE DEVICE, CONTROLLING METHOD FOR STORAGE DEVICE, AND CONTROL PROGRAM
    • 存储设备,存储设备的控制方法和控制程序
    • US20100005257A1
    • 2010-01-07
    • US12480458
    • 2009-06-08
    • Masaaki TamuraGen Ohshima
    • Masaaki TamuraGen Ohshima
    • G06F12/00G06F12/16G06F9/44
    • G06F3/0656G06F3/0613G06F3/0676
    • A storage device includes a first storage unit that stores data read from a recording medium based on an instruction received from a processing device, and transmitting the data stored in the first storage unit to the processing device. The storage device also includes a second storage unit that stores the instruction received from the processing device; a counter that counts the number of pieces of data stored in the first storage unit; and a control unit that transmits the data stored in the first storage unit to the processing device based on a count value of the counter and, when the data read upon the instruction is stored in the first storage unit, writes identification information indicating that storing data has been completed in the second storage unit and, based on the identification information, transmits the data stored in the first storage unit to the processing device.
    • 存储装置包括:第一存储单元,其基于从处理装置接收的指令来存储从记录介质读取的数据,并将存储在第一存储单元中的数据发送到处理装置。 存储装置还包括存储从处理装置接收的指令的第二存储单元; 对存储在第一存储单元中的数据数进行计数的计数器; 以及控制单元,其基于计数器的计数值将存储在第一存储单元中的数据发送到处理设备,并且当在指令上读取的数据被存储在第一存储单元中时,写入指示存储数据的识别信息 已经在第二存储单元中完成,并且基于识别信息,将存储在第一存储单元中的数据发送到处理装置。
    • 3. 发明授权
    • Semiconductor memory apparatus, data transmission device, and recording method
    • 半导体存储装置,数据传输装置和记录方法
    • US09064579B2
    • 2015-06-23
    • US13722361
    • 2012-12-20
    • Gen Ohshima
    • Gen Ohshima
    • G06F11/00G11C16/06G06F13/16G11C16/10G11C16/34
    • G11C16/16G06F13/16G06F2212/1036G06F2212/1041G11C16/06G11C16/102G11C16/32G11C16/349
    • According to one embodiment, a semiconductor memory apparatus includes a memory and a speed control unit. The speed control unit calculates a time-varying behavior of a permissible value of an accumulated amount of data written in the non-volatile semiconductor memory, where, after a start of a guaranteed period, data is written in the memory at a constant write speed so that the permissible value at an end time of the guaranteed period is equal to a sum of a first capacity and a second capacity. The first capacity is an accumulated amount of data written in the memory. The second capacity is an accumulated amount of data which is writable in the memory in a remaining time of the guaranteed period based on remaining rewritable times of existing blocks. The speed control unit controls a transmission speed of data from a host based on the permissible value.
    • 根据一个实施例,半导体存储装置包括存储器和速度控制单元。 速度控制单元计算写入非易失性半导体存储器的累积数据量的允许值的时变特性,其中在保证期间开始之后以恒定写入速度将数据写入存储器 使得在保证期间的结束时间的允许值等于第一容量和第二容量之和。 第一容量是写入存储器中的累积数据量。 第二容量是基于现有块的剩余可重写时间在保证期间的剩余时间内在存储器中可写入的数据的累积量。 速度控制单元基于允许值来控制来自主机的数据的传输速度。
    • 5. 发明授权
    • Disk unit performing control using sector pulses
    • 磁盘单元使用扇区脉冲执行控制
    • US5650882A
    • 1997-07-22
    • US342815
    • 1994-11-21
    • Hiroshi TsurumiGen OhshimaMasafumi SatoMasataka Shitara
    • Hiroshi TsurumiGen OhshimaMasafumi SatoMasataka Shitara
    • G11B20/10G11B5/55G11B19/02G11B20/12G11B27/30G11B5/09G11B5/596
    • G11B5/5547G11B19/02G11B20/1258G11B27/3027G11B2020/1282G11B2220/218G11B2220/2545
    • An object of the present invention is to minimize an overhead attributable to internal control and to provide a CDR type disk unit in which even when a head moves over a zone boundary, a sector pulse indicating a destination sector can be generated reliably without waiting for an index pulse. The disk unit includes a processing unit; a sector pulse generation unit which generates a sector pulse according to a signal written in the servo information on medium surface; and a format control unit which starts the formatting control when said sector pulse is received after a activating command is received from said processing unit; a target sector detection unit which detects the instant when said head reaches the target sector. The sector pulse generation unit stops outputting the sector pulses to the format control unit from when the access operation starts until a target pulse is received from the target sector detection unit.
    • 本发明的一个目的是最小化归因于内部控制的开销,并且提供一种CDR型盘单元,其中即使当一个头在区域边界上移动时,也可以可靠地产生指示目的地扇区的扇区脉冲而不等待 索引脉冲 盘单元包括处理单元; 扇区脉冲产生单元,其根据写在中间表面上的伺服信息中的信号产生扇区脉冲; 以及格式控制单元,当从所述处理单元接收到激活命令之后接收到所述扇区脉冲时,开始格式化控制; 目标扇区检测单元,其检测当所述头到达目标扇区时的瞬间。 扇区脉冲发生单元从访问操作开始直到从目标扇区检测单元接收到目标脉冲之后,停止向格式控制单元输出扇区脉冲。