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1. 发明授权

US5896239A Magnetic disk writing method and a magnetic disk apparatus 失效
标题翻译：磁盘写入方法和磁盘装置
公开(公告)号：US5896239A
公开(公告)日：1999-04-20
申请号：US125311
申请日：1993-09-21
申请人： Shinichi Maki , Tatsuya Masuda , Kazunobu Tomiyama , Yoshihisa Matsumoto
发明人： Shinichi Maki , Tatsuya Masuda , Kazunobu Tomiyama , Yoshihisa Matsumoto
IPC分类号： G11B5/02 , G11B5/012 , G11B5/55 , G11B5/596 , G11B23/00 , G11B5/09
CPC分类号： G11B5/5526 , G11B5/012 , G11B23/0007 , G11B5/59605
摘要： A method and disk apparatus, for writing data disk apparatus, that reduces the adverse influence of noise caused by data head writing on a read signal of a servo head even though the data head and the servo head are collaterally paired with no disks there between. A magnetic disk apparatus comprises a plurality of magnetic disks that are stacked at predetermined intervals; a servo head for reading servo signals recorded on a servo surface of one of the magnetic disks; a plurality of data heads, one of which is provided for each data surface of the magnetic disks with a first data head being collaterally positioned with the servo head, with no intervening magnetic disk, and second data heads being positioned at other than the collateral position; and an actuator for supporting the servo head and the data heads and for positioning the servo head and the data heads by moving them radially relative to the magnetic disks. The method comprises the steps of: producing a write current whose value is varied by selecting either the first data head or one of the second data heads in consonance with a head select signal; and driving, at the write current value, the data head that is selected by the head select signal in consonance with write data. The magnetic disk apparatus further comprises a write circuit for varying a write current value by selecting either the first data head or one of the second data heads in consonance with a head select signal, and for driving the selected data head in consonance with write data.
摘要翻译：即使数据磁头和伺服磁头与其间没有磁盘成对配对，也可以减少数据磁头写入对伺服磁头的读取信号造成的噪声的不良影响的方法和磁盘装置。磁盘装置包括以预定间隔堆叠的多个磁盘; 用于读取记录在一个磁盘的伺服表面上的伺服信号的伺服头; 多个数据头，其中一个为磁盘的每个数据表面提供，第一数据头与伺服头相互定位，没有中间磁盘，第二数据磁头位于辅助位置之外 ; 以及用于支撑伺服头和数据头的致动器，并且用于通过相对于磁盘径向移动来定位伺服头和数据头。该方法包括以下步骤：通过根据头部选择信号选择第一数据头或第二数据头之一来产生其值被改变的写入电流; 并以写入当前值驱动由头部选择信号选择的与写入数据相符合的数据头。磁盘装置还包括写入电路，用于通过根据头部选择信号选择第一数据头或第二数据头中的一个来改变写入电流值，并且用于根据写入数据来驱动所选择的数据头。

2. 发明授权

US06449115B1 Memory unit having a plurality of heads controlled by a minimum number of connection lines 失效
标题翻译：存储单元，具有由最少数量的连接线控制的多个磁头
公开(公告)号：US06449115B1
公开(公告)日：2002-09-10
申请号：US09631066
申请日：2000-08-01
申请人： Shinichi Maki
发明人： Shinichi Maki
IPC分类号： G11B2102
CPC分类号： G11B33/122 , G11B5/012 , G11B5/09 , G11B33/121 , G11B2005/0018
摘要： A memory unit having a plurality of heads performing at least one of recording or reproducing operations on a storage medium is disclosed. The memory unit includes a first converter circuit for receiving head-selection signals as first parallel data and converting the head-selection signals to first serial data to be transmitted, and a second converter circuit for receiving the first serial data from the first converter circuit and converting the first serial data to second parallel data to be transmitted. The memory unit further includes a head control circuit for receiving the second parallel data from the second converter circuit and selectively driving the heads on the basis of the second parallel data.
摘要翻译：公开了一种存储单元，其具有在存储介质上执行记录或重放操作中的至少一个的多个磁头。存储单元包括：第一转换器电路，用于接收头部选择信号作为第一并行数据，并将头部选择信号转换成要发送的第一串行数据;以及第二转换器电路，用于从第一转换器电路接收第一串行数据;以及将第一串行数据转换成要发送的第二并行数据。存储单元还包括用于从第二转换器电路接收第二并行数据并基于第二并行数据选择性地驱动磁头的磁头控制电路。

3. 发明授权

US06201658B1 Memory unit having a plurality of heads controlled by a minimum number of connection lines 失效
标题翻译：存储单元，具有由最少数量的连接线控制的多个磁头
公开(公告)号：US06201658B1
公开(公告)日：2001-03-13
申请号：US08843835
申请日：1997-04-21
申请人： Shinichi Maki
发明人： Shinichi Maki
IPC分类号： G11B2102
CPC分类号： G11B33/122 , G11B5/012 , G11B5/09 , G11B33/121 , G11B2005/0018
摘要： A memory unit having a plurality of heads performing at least one of recording or reproducing operations on a storage medium is disclosed. The memory unit includes a first converter circuit for receiving head-selection signals as first parallel data and converting the head-selection signals to first serial data to be transmitted, and a second converter circuit for receiving the first serial data from the first converter circuit and converting the first serial data to second parallel data to be transmitted. The memory unit further includes a head control circuit for receiving the second parallel data from the second converter circuit and selectively driving the heads on the basis of the second parallel data.
摘要翻译：公开了一种存储单元，其具有在存储介质上执行记录或重放操作中的至少一个的多个磁头。存储单元包括：第一转换器电路，用于接收头部选择信号作为第一并行数据，并将头部选择信号转换成要发送的第一串行数据;以及第二转换器电路，用于从第一转换器电路接收第一串行数据;以及将第一串行数据转换成要发送的第二并行数据。存储单元还包括用于从第二转换器电路接收第二并行数据并基于第二并行数据选择性地驱动磁头的磁头控制电路。

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