专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5347410A Sensitivity correcting circuit of servo signal detection on data surface and offset measuring circuit in magnetic disk unit 失效
标题翻译：磁盘单元数据表面伺服信号检测灵敏度校正电路及偏移测量电路
公开(公告)号：US5347410A
公开(公告)日：1994-09-13
申请号：US875647
申请日：1992-04-28
申请人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
发明人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04
CPC分类号： G11B5/59627 , G11B19/04 , G11B5/5565
摘要： A sensitivity correcting circuit offsets a data head outwardly from an ontrack position by a given quantity (X1), reads first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V1) between the peak values of the signals. Also, the system offsets the data head inwardly from the ontrack position by a given quantity (X2), reads the first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V2) between the peak values of the signals (V.sub.A,V.sub.B). The circuit then computes a proportional coefficient K according to the detected values (V1, V2), and according to the proportional coefficient, finds an offset specific to the data head. Or an offset measuring circuit comprises an offset detector for detecting offsets of data heads relative to a servo head according to servo information read by the data heads on data surfaces of the disk media; a measurement timing setting circuit for instructing the offset detector to start a detection process according to a predetermined time schedule; and an interrupter for interrupting, if the command control section decodes an access command such as a read or write command provided by the host unit, the offset detection process, executing the access command at first, and resuming the offset detection process after the access command is completed when the detection process by the offset detector is executed.
摘要翻译：灵敏度校正电路将数据头从导轨位置向外偏移给定量（X1），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第一和第二伺服信息信号的峰值。此外，系统将数据头从入口位置向内偏移给定量（X2），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第二和第二伺服信息（VA，VB）之间的差（V2）信号的峰值（VA，VB）。然后，电路根据检测值（V1，V2）计算比例系数K，并根据比例系数找到数据头特有的偏移量。或者偏移测量电路包括偏移检测器，用于根据由磁盘介质的数据表面上的数据头读取的伺服信息来检测数据磁头相对于伺服磁头的偏移; 测量定时设定电路，用于指示偏移检测器根据预定时间表开始检测处理; 以及用于中断的断续器，如果命令控制部分解码由主机单元提供的诸如读或写命令之类的访问命令，则偏移检测处理首先执行访问命令，并且在访问命令之后恢复偏移检测处理在执行偏移检测器的检测处理时完成。

2. 发明授权

US06178053B1 Storage apparatus for reducing a read error caused by a thermal asperity of a magneto-resistive head 失效
标题翻译：用于减小由磁阻头的热不均匀性引起的读取误差的存储装置
公开(公告)号：US06178053B1
公开(公告)日：2001-01-23
申请号：US08951460
申请日：1997-10-16
申请人： Teruyuki Narita
发明人： Teruyuki Narita
IPC分类号： G11B509
CPC分类号： G11B20/10009 , G11B5/012 , G11B5/59683 , G11B20/24
摘要： For a read demodulating unit for demodulating read data and servo data which is used for head positioning from a reproduction waveform signal of a magneto-resistive head, a thermal asperity fault detecting unit for setting a predetermined threshold for the reproduction waveform signal and for generating a fault signal when the reproduction waveform signal exceeds the threshold is provided. When a thermal asperity fault is detected by the thermal asperity fault detecting unit, an increase in cut-off frequency of a high pass filter, an automatic gain control lock by an automatic gain control holding circuit, and a phase lock loop lock by a phase lock loop holding circuit are executed in an error avoiding unit.
摘要翻译：对于用于从磁阻头的再生波形信号中解调用于磁头定位的读取数据和伺服数据的读取解调单元，用于设置再现波形信号的预定阈值并用于产生提供再现波形信号超过阈值时的故障信号。当热凹凸故障检测单元检测到热粗糙度故障时，高通滤波器的截止频率增加，自动增益控制保持电路的自动增益控制锁定和相位锁相环锁定锁定回路保持电路在错误避免单元中执行。

3. 发明授权

US5986842A Magnetic disk apparatus with circuit capable of identifying individual specification 失效
标题翻译：带电路的磁盘设备，能够识别各种规格
公开(公告)号：US5986842A
公开(公告)日：1999-11-16
申请号：US951192
申请日：1997-10-15
申请人： Akira Matsumoto , Teruyuki Narita
发明人： Akira Matsumoto , Teruyuki Narita
IPC分类号： G11B5/09 , G11B5/00 , G11B5/012 , G11B19/12 , G11B25/04 , G11B33/10 , G11B15/18
CPC分类号： G11B25/043 , G11B19/12 , G11B33/10 , G11B2005/001 , G11B2005/0013 , G11B5/012
摘要： A magnetic disk apparatus is disclosed, in which the product specifications such as the number of heads, the number of disks and the information on the destination of the apparatus can be efficiently, accurately identified by a single circuit. The magnetic disk apparatus comprises an identification circuit that can identify the performance specification information. The identification circuit includes a first resistor circuit arranged on a cable connecting a head actuator and a printed board, a second resistor circuit formed on the printed board and having an end thereof connected to a reference voltage and the other end thereof connected in series to the first resistor circuit, an A/D converter for converting the voltage value at the junction point of the first and second resistor circuits into a digital value of a predetermined number of bits, and a memory for storing in advance the performance specification information and the control information of the magnetic disk apparatus corresponding to a digital value of a predetermined number of bits. The control circuit on the printed board can thus control the magnetic disk apparatus by judging the performance specification information of the magnetic disk apparatus from the output value of the A/D converter and the value stored in the memory.
摘要翻译：公开了一种磁盘装置，其中可以通过单个电路精确地识别诸如磁头数量，磁盘数量和设备目的地信息的产品规格。磁盘装置包括能够识别性能规格信息的识别电路。识别电路包括布置在连接头致动器和印刷电路板的电缆上的第一电阻器电路，形成在印刷电路板上并具有连接到参考电压的一端的第二电阻器电路，并且其另一端与第一电阻器电路，用于将第一和第二电阻器电路的连接点处的电压值转换为预定位数的数字值的A / D转换器，以及用于预先存储性能指定信息和控制的存储器对应于预定位数的数字值的磁盘装置的信息。因此，印刷电路板上的控制电路可以通过从A / D转换器的输出值和存储在存储器中的值判断磁盘装置的性能指定信息来控制磁盘装置。

4. 发明授权

US5426544A Sensitivity correcting circuit of servo signal detection on data surface and offset measuring circuit in magnetic disk unit 失效
标题翻译：磁盘单元数据表面伺服信号检测灵敏度校正电路及偏移测量电路
公开(公告)号：US5426544A
公开(公告)日：1995-06-20
申请号：US194256
申请日：1994-02-10
申请人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
发明人： Teruyuki Narita , Atsushi Sato , Masao Tsunekawa , Hideaki Tanaka
IPC分类号： G11B5/55 , G11B5/596 , G11B19/04
CPC分类号： G11B5/59627 , G11B19/04 , G11B5/5565
摘要： A sensitivity correcting circuit offsets a data head outwardly from an ontrack position by a given quantity (X1), reads first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V1) between the peak values of the signals. Also, the system offsets the data head inwardly from the ontrack position by a given quantity (X2), reads the first and second servo information (A, B) to provide signals (V.sub.A, V.sub.B), and detects a difference (V2) between the peak values of the signals (V.sub.A, V.sub.B). The circuit then computes a proportional coefficient K according to the detected values (V1, V2), and according to the proportional coefficient, finds an offset specific to the data head. Or an offset measuring circuit comprises an offset detector for detecting offsets of data heads relative to a servo head according to servo information read by the data heads on data surfaces of the disk media; a measurement timing setting circuit for instructing the offset detector to start a detection process according to a predetermined time schedule; and an interrupter for interrupting, if the command control section decodes an access command such as a read or write command provided by the host unit, the offset detection process, executing the access command at first, and resuming the offset detection process after the access command is completed when the detection process by the offset detector is executed.
摘要翻译：灵敏度校正电路将数据头从导轨位置向外偏移给定量（X1），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第一和第二伺服信息信号的峰值。此外，系统将数据头从入口位置向内偏移给定量（X2），读取第一和第二伺服信息（A，B）以提供信号（VA，VB），并且检测第二和第二伺服信息（VA，VB）之间的差（V2）信号的峰值（VA，VB）。然后，电路根据检测值（V1，V2）计算比例系数K，并根据比例系数找到数据头特有的偏移量。或者偏移测量电路包括偏移检测器，用于根据由磁盘介质的数据表面上的数据头读取的伺服信息来检测数据磁头相对于伺服磁头的偏移; 测量定时设定电路，用于指示偏移检测器根据预定时间表开始检测处理; 以及用于中断的断续器，如果命令控制部分解码由主机单元提供的诸如读或写命令之类的访问命令，则偏移检测处理首先执行访问命令，并且在访问命令之后恢复偏移检测处理在执行偏移检测器的检测处理时完成。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式