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

US06967807B2 Selecting physical cylinders in a disc drive employing discs with pre-written servo patterns 失效
标题翻译：选择使用预先写入伺服模式的光盘的光盘驱动器中的物理柱面
公开(公告)号：US06967807B2
公开(公告)日：2005-11-22
申请号：US10642909
申请日：2003-08-18
申请人： Chris Thomas Settje , David Louis Schell , Daniel Eugene Hobson , Teck Khoon Lim , Patrick TaiHeng Wong , Beng Wee Quak , Ming Zhong Ding , Soon Wah Leow
发明人： Chris Thomas Settje , David Louis Schell , Daniel Eugene Hobson , Teck Khoon Lim , Patrick TaiHeng Wong , Beng Wee Quak , Ming Zhong Ding , Soon Wah Leow
IPC分类号： G11B5/55 , G11B5/596 , G11B15/12
CPC分类号： G11B5/59627 , G11B5/5526
摘要： An apparatus and method for selecting physical cylinders (cylinders accessible for read/write operations) in a disc drive is provided. The disc drive includes at least one rotatable disc. The disc drive also includes a first head, which is positionable adjacent a first disc surface, and a second head, which is positionable adjacent a second disc surface. The first disc surface has a first plurality of greycode tracks and the second disc surface has a second plurality of greycode tracks. Each greycode track of the second plurality of greycode tracks corresponds to a different greycode track of the first plurality of greycode tracks, thereby forming a plurality of greycode cylinders, with each greycode cylinder of the plurality of greycode cylinders including a pair of corresponding greycode tracks. The physical cylinders are a subset (less than all) of the plurality of the greycode cylinders. The method of selecting the physical cylinders includes determining whether the first plurality of greycode tracks or the second plurality of greycode tracks demonstrates greater track eccentricity, to thereby obtain a maximum track eccentricity surface and a corresponding maximum eccentricity head. The maximum track eccentricity surface is one of the first and second disc surfaces and the maximum eccentricity head is a corresponding one of the first and second heads. The maximum eccentricity head is used to locate at least one of the physical cylinders.
摘要翻译：提供了一种用于选择盘驱动器中的物理气缸（用于读/写操作可读取的气缸）的装置和方法。盘驱动器包括至少一个可旋转盘。盘驱动器还包括可邻近第一盘表面定位的第一头和可邻近第二盘表面定位的第二头。第一盘表面具有第一多个灰色轨道，第二盘表面具有第二多个灰色轨迹。第二多个灰色轨道的每个灰度轨道对应于第一多个灰色轨迹的不同的灰度轨道，从而形成多个灰色圆柱体，其中多个灰色圆柱体的每个灰度圆柱体包括一对相应的灰度轨道。物理气缸是多个气缸中的子集（小于全部）。选择物理气缸的方法包括确定第一多个灰色轨道或第二多个灰色轨道是否表现出更大的轨道偏心度，从而获得最大轨道偏心面和相应的最大偏心头。最大轨道偏心面是第一和第二盘表面之一，最大偏心头是第一和第二磁头中相应的一个。最大偏心头用于定位至少一个物理气缸。

2. 发明授权

US06445653B1 Implementation of variable bit density in storage disc drives 有权
标题翻译：在存储盘驱动器中实现可变位密度
公开(公告)号：US06445653B1
公开(公告)日：2002-09-03
申请号：US09714025
申请日：2000-11-15
申请人： Wei Loon Ng , Teck Khoon Lim , Beng Wee Quak , Wing Hung Chan , Myint Ngwe
发明人： Wei Loon Ng , Teck Khoon Lim , Beng Wee Quak , Wing Hung Chan , Myint Ngwe
IPC分类号： G11B700
CPC分类号： G11B27/105 , G11B5/012 , G11B20/10 , G11B2005/001 , G11B2220/20 , G11B2220/2516
摘要： The present invention pertains to an apparatus and method for recording data in a data storage medium. The data storage medium includes a number of discs, each having at least one recording surface. Each recording surface is associated with a read/write head that records and accesses data from the surface. Each recording surface is partitioned into a number of zones. Each zone is vertically aligned with a same zone on each surface of each disc. The zone boundaries on all surfaces of the disc drive are the same. The recording frequency for each zone on all surfaces can differ for each read/write head in order to compensate for a read/write head that cannot meet the BPI error rate threshold.
摘要翻译：本发明涉及用于在数据存储介质中记录数据的装置和方法。数据存储介质包括多个盘，每个盘具有至少一个记录表面。每个记录表面与记录和访问来自表面的数据的读/写头相关联。每个记录表面被划分成多个区域。每个区域与每个盘的每个表面上的相同区域垂直对准。磁盘驱动器的所有表面上的区域边界是相同的。所有表面上的每个区域的记录频率对于每个读/写头可能不同，以补偿不能满足BPI错误率阈值的读/写头。

3. 发明授权

US06182250B2 Implementation of variable bit density recording in storage disc drives 失效
标题翻译：在存储盘驱动器中实现可变位密度记录
公开(公告)号：US06182250B2
公开(公告)日：2001-01-30
申请号：US09167808
申请日：1998-10-07
申请人： Wei Loon Ng , Teck Khoon Lim , Beng Wee Quak , Wing Hung Chan , Myint Ngwe
发明人： Wei Loon Ng , Teck Khoon Lim , Beng Wee Quak , Wing Hung Chan , Myint Ngwe
IPC分类号： G06F1100
CPC分类号： G11B27/105 , G11B5/012 , G11B20/10 , G11B2005/001 , G11B2220/20 , G11B2220/2516
摘要： The present invention pertains to an apparatus and method for recording data in a data storage medium. The data storage medium includes a number of discs, each having at least one recording surface. Each recording surface is associated with a read/write head that records and accesses data from the surface. Each recording surface is partitioned into a number of zones. Each zone is vertically aligned with a same zone on each surface of each disc. The zone boundaries on all surfaces of the disc drive are the same. The recording frequency for each zone on all surfaces can differ for each read/write head in order to compensate for a read/write head that cannot meet the BPI error rate threshold.
摘要翻译：本发明涉及用于在数据存储介质中记录数据的装置和方法。数据存储介质包括多个盘，每个盘具有至少一个记录表面。每个记录表面与记录和访问来自表面的数据的读/写头相关联。每个记录表面被划分成多个区域。每个区域与每个盘的每个表面上的相同区域垂直对准。磁盘驱动器的所有表面上的区域边界是相同的。所有表面上的每个区域的记录频率对于每个读/写头可能不同，以补偿不能满足BPI错误率阈值的读/写头。

4. 发明授权

US06560052B2 Implementation of variable bit density recording in storage disc drives 有权
标题翻译：在存储盘驱动器中实现可变位密度记录
公开(公告)号：US06560052B2
公开(公告)日：2003-05-06
申请号：US09351737
申请日：1999-07-12
申请人： Wei Loon Ng , Beng Wee Quak , Wing Hung Chan , Swee Kieong Choo , Choon Wei Ng , Teck Khoon Lim
发明人： Wei Loon Ng , Beng Wee Quak , Wing Hung Chan , Swee Kieong Choo , Choon Wei Ng , Teck Khoon Lim
IPC分类号： G11B509
CPC分类号： G11B20/1258 , G11B5/012 , G11B5/09 , G11B20/1816 , G11B27/105 , G11B2005/001 , G11B2220/20 , G11B2220/2516
摘要： The present invention pertains to an apparatus and method for recording data in a variable bit density disc drive. The disc drive includes a recording surfaces, each having a corresponding head for recording data on the recording surface. At least one head is operated at a different recording frequency from the other heads, creating a variable bit density for the different recording surfaces. The combination of head recording frequencies is determined following an error testing operation and a unique physdisc lookup table is created based on the determined recording frequencies. The physdisc lookup table is used to allocate data sectors and to convert between logical and physical block addresses.
摘要翻译：本发明涉及一种用于在可变位密度盘驱动器中记录数据的装置和方法。盘驱动器包括记录表面，每个记录表面具有用于在记录表面上记录数据的相应头部。至少一个头部以与其他头部不同的记录频率操作，为不同的记录表面创建可变位密度。头部记录频率的组合在误差测试操作之后确定，并且基于所确定的记录频率创建唯一的物理查找表。 physdisc查找表用于分配数据扇区，并在逻辑块和物理块地址之间进行转换。

5. 发明授权

US06446156B1 Proposal of capacity tuning in the production process of storage disc drives 有权
标题翻译：存储盘驱动器生产过程中的容量调整方案
公开(公告)号：US06446156B1
公开(公告)日：2002-09-03
申请号：US09475530
申请日：1999-12-30
申请人： Kok Hoe Chia , Teck Khoon Lim , Beng Wee Quak , Kok Seng Lim , Song Wee Teo
发明人： Kok Hoe Chia , Teck Khoon Lim , Beng Wee Quak , Kok Seng Lim , Song Wee Teo
IPC分类号： G06F1200
CPC分类号： G11B5/455 , G11B5/012 , G11B5/09 , G11B20/1816 , G11B27/36 , G11B2005/001 , G11B2220/20
摘要： A disc drive production process automatically configures the disc drive to a suitable capacity based upon the data transfer capability of each of the head/disc surface combinations in the drive. The error rate of each of the head/disc surface combinations is determined as a function of the bit density of the disc surface. Based on the data transfer capability of the head/disc surface combinations, one of three drive configuration schemes is selected. A variable BPI (bits per inch) scheme reduces the data rate of a weak head/disc surface combination while increasing the data rate of a strong head/disc surface combination. If the drive contains one very weak head/disc surface combination, a head depopulation scheme disables the very weak head. If the drive contains two or more very weak heads, a de-frequency scheme reduces the overall capacity of the drive.
摘要翻译：基于驱动器中的每个磁头/磁盘表面组合的数据传输能力，磁盘驱动器生产过程自动地将磁盘驱动器配置为合适的容量。根据盘表面的位密度确定每个头/盘表面组合的误差率。基于头/盘表面组合的数据传输能力，选择三种驱动器配置方案之一。可变BPI（每英寸位数）方案降低了弱磁头/磁盘表面组合的数据速率，同时增加了强磁头/磁盘表面组合的数据速率。如果驱动器包含一个非常弱的头/盘表面组合，则头部排泄方案会禁用非常弱的头部。如果驱动器包含两个或多个非常弱的磁头，则去频方案会降低驱动器的总体容量。

6. 发明授权

US06636049B1 Disc drive power-up process including head mapping 失效
标题翻译：光盘驱动器启动过程包括头映射
公开(公告)号：US06636049B1
公开(公告)日：2003-10-21
申请号：US09553076
申请日：2000-04-20
申请人： Teck Khoon Lim , Swee Kieong Choo , Kok Hoe Chia , Song Wee Teo
发明人： Teck Khoon Lim , Swee Kieong Choo , Kok Hoe Chia , Song Wee Teo
IPC分类号： G01R3102
CPC分类号： G11B19/00 , G11B5/012 , G11B5/455 , G11B27/36 , G11B2005/0018 , G11B2220/20
摘要： A logical-to-physical head map is built upon each power up of a disc drive. After powering the controller and disc drive spindle motor, a bias current is iteratively supplied to the read heads in succession. A representation of the voltage across each read head is stored in a fault register for comparison to a threshold and a “good” or “bad” fault status is stored for each head. A logical-to-physical head map is defined based on the number of logical heads, which in turn is based on the disc drive serial number. Each of the logical heads in the logical-to-physical head map is associated to a respective one of the heads having a “good” fault status to construct the logical-to-physical head map in the controller memory.
摘要翻译：每个磁盘驱动器上电后，建立逻辑到物理磁头映射。在给控制器和磁盘驱动器主轴电机供电之后，将偏置电流依次迭代地提供给读取头。每个读取头上的电压的表示被存储在故障寄存器中用于与阈值进行比较，并且为每个头部存储“良好”或“坏”故障状态。基于逻辑头的数量来定义逻辑到物理头映射，逻辑头依次是基于盘驱动器序列号。逻辑到物理头映射中的每个逻辑头与具有“良好”故障状态的相应头之一相关联，以构成控制器存储器中的逻辑到物理头映射。

7. 发明授权

US06633442B2 Adjusting track density and bit density to provide limited excess capacity in a storage device 失效
标题翻译：调整轨道密度和位密度，以在存储设备中提供有限的过剩容量
公开(公告)号：US06633442B2
公开(公告)日：2003-10-14
申请号：US09873579
申请日：2001-06-04
申请人： BengWee Quak , KokHoe Chia , Tien Hiong Lee , Teck Khoon Lim , Kwee Teck Say
发明人： BengWee Quak , KokHoe Chia , Tien Hiong Lee , Teck Khoon Lim , Kwee Teck Say
IPC分类号： G11B2736
CPC分类号： G11B27/36 , G11B5/59633 , G11B20/10 , G11B2220/20
摘要： A method sets bit densities and track densities for a plurality of heads in a data storage device. The method includes determining an initial bit density and an initial track density for each head. An initial total capacity for the storage device is determined based on the initial track densities and the initial bit densities. A desired capacity for the storage device is selected and the initial total capacity and the desired capacity are compared. One of either a bit density or a track density is then adjusted so that the data storage device has an adjusted capacity that provides some excess capacity over the desired capacity where the excess capacity is less than any excess capacity that was present between the initial capacity and the desired capacity. A data storage device formed through this method is also provided.
摘要翻译：一种方法设置数据存储装置中的多个磁头的位密度和磁道密度。该方法包括确定每个头部的初始位密度和初始轨道密度。基于初始轨道密度和初始比特密度来确定存储设备的初始总容量。选择存储设备的期望容量，并比较初始总容量和期望容量。然后调整位密度或磁道密度之一，使得数据存储设备具有经调整的容量，其在超过容量小于存在于初始容量和初始容量之间的任何过剩容量的期望容量上提供一些过剩容量所需容量。还提供了通过该方法形成的数据存储设备。

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