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1. 发明授权

US6088180A Head switching method for staggered servo and circuit thereof 失效
标题翻译：交错伺服及其电路的头切换方法
公开(公告)号：US6088180A
公开(公告)日：2000-07-11
申请号：US2351
申请日：1998-01-02
申请人： Kwang-heui Lee
发明人： Kwang-heui Lee
IPC分类号： G11B5/596 , G11B21/10 , G11B15/12 , G11B5/09
CPC分类号： G11B21/106 , G11B5/59627
摘要： A head-switching circuit for switching a first head operating on a first recording medium to a second head operating on a second recording medium so as to read out data written on a recording medium according to a staggered servo mechanism, includes a selector for selecting one of the recording media, a classifier 20, 30, 31, 32 and 33 for classifying the skew time of a recording medium selected by the selector and another recording medium selected by the selector, a sync signal generator 40, 41, 42, 50, 51, 60, 61, 62, 70, 71, 72 and 80 enabled by the output signal of the classifier and for generating a sync signal when the skew time is identical with a predetermined time, thereby generating a sync signal precisely during head-switching in staggered servo mechanism.
摘要翻译：一种头切换电路，用于将在第一记录介质上操作的第一头切换到在第二记录介质上操作的第二头，以便根据交错的伺服机构读出写在记录介质上的数据，包括一个选择器，用于选择一个记录介质的分类器20,30,31,32和33，用于分类由选择器选择的记录介质的偏移时间和由选择器选择的另一个记录介质;同步信号发生器40,41,42,50， 51,60,61,62,70,71,72和80由分类器的输出信号使能，并且当偏斜时间与预定时间相同时产生同步信号，从而在头切换期间精确地产生同步信号交错伺服机构。

2. 发明授权

US5805370A Head switching method for staggered servo and circuit thereof 失效
标题翻译：交错伺服及其电路的头切换方法
公开(公告)号：US5805370A
公开(公告)日：1998-09-08
申请号：US211526
申请日：1994-04-05
申请人： Kwang-heui Lee
发明人： Kwang-heui Lee
IPC分类号： G11B20/10 , G11B19/00 , G11B19/12 , G11B27/30 , G11B21/00
CPC分类号： G11B27/3027 , G11B19/00 , G11B19/12
摘要： A head-switching circuit for switching from a first head operating on a first recording medium to a second head operating on a second recording medium so as to read out data written on a recording medium according to a staggered servo mechanism, includes a selector for selecting one of the recording media, a classifier (20, 30, 31, 32, 33 and 34) for classifying the skew time of a recording medium selected by the selector and another recording medium selected by the selector, a sync signal generator (40, 41, 42, 50, 51), (60, 61, 62, 70, 71, 72 and 80) enabled by the output signal of the classifier for generating a sync signal when the skew time to is identical with a predetermined time, thereby generate a sync signal precisely during head-switching in staggered servo mechanism.
摘要翻译： PCT No.PCT / KR92 / 00069 Sec。 371日期1994年04月5日 102（e）日期1994年4月5日PCT 1991年11月30日PCT公布。第WO94 / 12981号公报日期1994年6月9日一种头切换电路，用于从在第一记录介质上操作的第一头切换到在第二记录介质上操作的第二头，以便根据交错伺服机构读出写在记录介质上的数据，包括用于选择记录介质之一的选择器，用于分类由选择器选择的记录介质的偏斜时间和由选择器选择的另一记录介质的分类器（20,30,31,32,33和34），同步信号发生器（40,41,42,50,51），（60,61,62,70,71,72和80），由分类器的输出信号使能，当偏斜时间与从而在交错伺服机构的头切换期间精确地产生同步信号。

3. 发明授权

US5825568A Servo address mark detection compensating circuit 失效
标题翻译：伺服地址标记检测补偿电路
公开(公告)号：US5825568A
公开(公告)日：1998-10-20
申请号：US424862
申请日：1995-04-18
申请人： Kwang-Heui Lee
发明人： Kwang-Heui Lee
IPC分类号： G11B20/18 , G11B5/596 , G11B5/09
CPC分类号： G11B5/596
摘要： A servo address mark (SAM) detection compensating circuit in a disk recording apparatus includes a servo address mark (SAM) detector that receives an end of sector (ENDS) signal indicating that the end of a prescribed recording region has been reached, generates a synchronizing signal (SYNC) when the servo address mark (SAM) is detected during a window enable interval, and generates an error detection signal when the servo address mark (SAM) is not detected during the window enable interval. A first storage device generates a first count value representative of a first time interval extending from when detection of the servo address mark (SAM) is expected to when a desired recording region is to be sampled, and a second storage device generates a second count value in response to the error detection signal. The second count value represents a second time interval extending from when detection of the servo address mark (SAM) is expected to when the window enable interval ends. A counter performs a counting operation from a starting point determined in dependence upon whether or not the servo address mark (SAM) is detected during the window enable interval, and maintains a current count value. A comparator compares the first count value stored in the first storage device with the current count value of the counter, and generates a sampling enable signal to accurately detect a desired recording region when the current count value and the first count value are equal.
摘要翻译：磁盘记录装置中的伺服地址标记（SAM）检测补偿电路包括：伺服地址标记（SAM）检测器，其接收指示已经到达规定的记录区域的结束的扇区结束（ENDS）信号，产生同步当在窗口使能间隔期间检测到伺服地址标记（SAM）时，产生信号（SYNC），并且在窗口使能间隔期间未检测到伺服地址标记（SAM）时产生错误检测信号。第一存储装置产生代表从预期伺服地址标记（SAM）的检测到当要对所需记录区域进行采样时延伸的第一时间间隔的第一计数值，并且第二存储装置产生第二计数值响应于错误检测信号。第二计数值表示从当窗口使能间隔结束时期望检测到伺服地址标记（SAM）的延长的第二时间间隔。计数器根据在窗口使能间隔期间是否检测到伺服地址标记（SAM）而确定的起点进行计数操作，并维持当前计数值。比较器将存储在第一存储装置中的第一计数值与计数器的当前计数值进行比较，并且当当前计数值和第一计数值相等时，生成采样使能信号，以精确地检测期望的记录区域。

4. 发明授权

US5583708A Circuit for detecting unrecorded portion of recording medium 失效
标题翻译：用于检测记录介质的未记录部分的电路
公开(公告)号：US5583708A
公开(公告)日：1996-12-10
申请号：US211530
申请日：1994-04-05
申请人： Kwang-heui Lee
发明人： Kwang-heui Lee
IPC分类号： G11B5/02 , G11B19/04 , G11B27/22 , G11B27/30 , G11B27/36 , G11B5/09
CPC分类号： G11B27/22 , G11B19/04 , G11B27/3027 , G11B27/36 , G11B5/02
摘要： Disclosed is a circuit for detecting an unrecorded portion of a recording medium, which has a window counting portion (10) for receiving an input signal, for recognizing if the input signal comes from an unrecorded portion of the recording medium and for counting a predetermined time to generate a window signal. The circuit also has a sync signal generator (20) which is enabled by the window signal, in which, if the number of pulses of the input signal equals or exceeds a predetermined number, the generator recognizes that the current input signal comes from a data region of the recording medium and therefore generates a sync signal. If the number of pulses of the input signal is less than the predetermined number of pulses, the generator recognizes that the current input signal is due to noise from an unrecorded region of the recording medium, and therefore does not generate the sync signal. The unrecorded portion is accurately detected since no sync signals are generated due to noise included in the unrecorded portion of the recording medium.
摘要翻译： PCT No.PCT / KR92 / 00070 Sec。 371日期1994年04月5日 102（e）日期1994年4月5日PCT 1991年11月30日PCT公布。公开号WO94 / 12982 日期1994年6月9日公开了一种用于检测记录介质的未记录部分的电路，其具有用于接收输入信号的窗口计数部分（10），用于识别输入信号是否来自记录介质的未记录部分，用于计数预定时间以产生窗口信号。该电路还具有通过窗口信号使能的同步信号发生器（20），其中如果输入信号的脉冲数等于或超过预定数量，则发生器识别出当前输入信号来自数据因此产生同步信号。如果输入信号的脉冲数小于预定脉冲数，则发生器识别出当前输入信号是由于来自记录介质的未记录区域的噪声引起的，因此不产生同步信号。由于记录介质的未记录部分中包含的噪声不产生同步信号，所以准确地检测未记录部分。

5. 发明授权

US5852522A Data recording apparatus for fast detection of servo sectors and correction of track address using a divided gray code and a parity bit 失效
标题翻译：数据记录装置，用于快速检测伺服扇区，并使用分割的灰度代码和奇偶校验位来校正轨道地址
公开(公告)号：US5852522A
公开(公告)日：1998-12-22
申请号：US661492
申请日：1996-06-11
申请人： Kwang-Heui Lee
发明人： Kwang-Heui Lee
IPC分类号： G11B20/02 , G11B5/55 , G11B5/596 , G11B20/12 , G11B21/10 , G11B27/30 , G11B5/09
CPC分类号： G11B21/10 , G11B21/106 , G11B27/3027 , G11B5/5526 , G11B5/59655 , G11B5/59688 , G11B20/1217
摘要： A servo sector forming method for fast detection and corresponding track address correcting method. The track address correcting method for a disk driving/recording apparatus uses as a recording medium a disk comprised of a plurality of track groups. A plurality of tracks are incorporated in each group, each having a data sector and a servo sector with a gray code field separated into a higH.sub.-- gray code field and a low-gray code field, a gap field for supplying the synchronization point of time and a parity bit field in which a group change information is recorded. The gray code read from the higH.sub.-- gray code field and low-gray code field is decoded during a track detection to detect a read address. A correction value for correcting a track address according to the track detection direction is added to the read address to detect the track address. Therefore, track detection time can be maintained in a high-capacity hard disk drive, irrespective of extension of a gray code field.
摘要翻译：一种用于快速检测的伺服扇区形成方法和相应的轨道地址校正方法。盘驱动/记录装置的轨道地址校正方法使用由多个轨道组构成的盘作为记录介质。每个组中并入有多个磁道，每个磁道具有数据扇区和具有灰色码字段的伺服扇区，灰色码字段被分成高灰度码字段和低灰度码字段，间隙字段用于提供同步时间点以及其中记录组改变信息的奇偶校验位字段。在高字节码字段和低灰度码字段中读取的灰色码片在轨道检测期间被解码以检测读取地址。将用于根据轨道检测方向校正轨道地址的校正值添加到读取地址以检测轨道地址。因此，无论灰度代码字段的扩展如何，都可以在高容量硬盘驱动器中维持跟踪检测时间。

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