Stanton M Keeler

US Patent:

6738333, May 18, 2004

Filed:

May 30, 2000

Appl. No.:

09/583448

Inventors:

Daniel R. Zaharris - Longmont CO
Lane W. Lee - Lafayette CO
Stanton M. Keeler - Longmont CO
Michael B. Propps - Loveland CO

Assignee:

DPHI Acquisitions, Inc. - Boulder CO

International Classification:

G11B 2736

US Classification:

369 5925, 3692753

Abstract:

A data storage disk includes a writeable area that allows a user to write data, wherein the data files are written from the outside diameter towards the inside diameter of the writeable area, while file system information is written from the inside diameter towards the outside diameter of the writeable area. This optimizes the use of the writeable area, whether a large number of small data files or a small number of large data files are being stored. To further optimize the use of the writeable area, information may be stored in two or more different error correction code (ECC) block sizes. Thus, information, such as the file system attributes and linking sectors, which contains few bytes may be stored in the smaller ECC block size, while the data may be stored in the larger ECC block size. The data storage disk, may also include a mastered content area.

US Patent:

6738924, May 18, 2004

Filed:

Jan 14, 2000

Appl. No.:

09/483341

Inventors:

Steven S. Williams - Longmont CO
Stanton M. Keeler - Longmont CO
Daniel S. Fisher - Longmont CO
Mike B. Propps - Loveland CO
Edward S. Hoskins - Longmont CO

Assignee:

Seagate Tech. LLC - Scotts Valley CA

International Classification:

G06F 1100

US Classification:

714 7, 714 8, 714 27

Abstract:

A disc drive includes a base and a disc rotatably attached to the base. A controller for a disc drive uses a system for mapping logical block addresses to actual location on a disc drive stores the number of skipped or defective sectors which occur prior to a target cylinder in a cylinder skip table. The system estimates a starting cylinder location for the selected logical block address. After estimating the cylinder location, a number of skipped defective sectors that have occurred prior to a cylinder start is determined. The starting location of the cylinder is slipped by this amount. A target track and associated head is also determined. Information in the track identification field is used to adjust the actual location on the track and to determine if a track seek to another track is needed.

US Patent:

6910174, Jun 21, 2005

Filed:

Jun 1, 2001

Appl. No.:

09/872060

Inventors:

Stanton M. Keeler - Longmont CO, US

Assignee:

DPHI Acquisitions, Inc. - Boulder CO

International Classification:

H03M013/00
G11C029/00

US Classification:

714769, 714755

Abstract:

An error correction code (ECC) block for a data storage disk, includes an array of data that is 88 rows by 172 columns. Each row includes ten bytes of inner parity code and each column includes sixteen bytes of outer parity making the array 104 rows by 182 columns. The ECC block is divided into eight sectors, each sector having eleven rows of data and two associated rows of outer parity, for a total of thirteen rows per sector. The ECC block in accordance with the present invention is half the size of a conventional ECC block but has a higher ratio of parity bytes to data. Consequently, the ECC block of the present invention is particularly advantageous with small form factor disks and first-surface media, i. e. , disks with the recording layer on the exterior of the disk or under a very thin transparent layer.

US Patent:

6912189, Jun 28, 2005

Filed:

Nov 18, 2002

Appl. No.:

10/299950

Inventors:

Michael B. Propps - Loveland CO, US
Lane W. Lee - Lafayette CO, US
Stanton M. Keeler - Longmont CO, US

Assignee:

DPHI Acquisitions, Inc. - Boulder CO

International Classification:

G11B005/09

US Classification:

369 5336, 369 5317, 369 4714

Abstract:

A method and system for managing a plurality of defects that may cause an error during a write operation in a write-once data storage disk is provided. A host system sends a write command to a disk drive that contains the storage disk. The process detects any errors that may occur during the write operation. When an error is detected, a “skip list” containing the addresses of physical sectors on the disk that are to be skipped during a read operation is updated, the write operation is suspended, and the process attempts to rewrite the data in another sector. If the rewrite is performed successfully, the write operation continues. Otherwise, the write operation is terminated and the host device is notified. While the disk drive is operative, the skip list is preferably maintained in a buffer memory, but periodically the entries in the skip list are copied to the disk for permanent storage. Before a read operation begins, the skip list is copied from the disk to the memory.

US Patent:

6990058, Jan 24, 2006

Filed:

Apr 3, 2000

Appl. No.:

09/542681

Inventors:

Curtis M. Pleiss - Longmont CO, US
Stanton M. Keeler - Longmont CO, US

Assignee:

DPHI Acquisitions, Inc. - Boulder CO

International Classification:

G11B 7/24

US Classification:

3692754

Abstract:

During manufacturing of optical disks, mastering equipment inserts marks (“high frequency wobble marks” or “HFWMs”) into the wobble of the groove on optical disks to store data. The presence of a HFWM at a zero crossing of the wobble indicates an active bit and the absence of the HFWM indicates an inactive bit. The zero crossing is, for example, a negative zero crossing. A matched filter is used to detect the shape of the HFWMs. If a HFWM is detected during a wobble cycle, an active bit is saved in a register or a memory. If a HFWM is not detected during a wobble cycle, an inactive bit is saved in a register or a memory. The active and inactive bits may be coded bits that must be decoded to data bits. The data bits include information such as a synchronization mark, a sector identification data, and an error detection code.

US Patent:

7099993, Aug 29, 2006

Filed:

Sep 24, 2003

Appl. No.:

10/670148

Inventors:

Stanton M. Keeler - Longmont CO, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

G06F 12/00

US Classification:

711113, 711112, 711122

Abstract:

A multi-level caching scheme for use in managing the storage of data on a data storage device is disclosed. The data is received by the data storage device as part of a write command issued by the sending interface and specifying one or more particular location(s) on the data storage device to which the data is/are to be stored. The data storage device utilizes a first level (L1) and a second level (L2) of cache memory to temporarily store the received data prior to commission to the specified storage location(s). In this embodiment, the data storage device first sends the data to the L1 cache memory, and subsequently thereafter, the data storage device transfers the data from the L1 cache memory to the L2 cache memory. Eventually, the data storage device transfers the data from the L2 cache memory to the specified storage location(s).

US Patent:

7536625, May 19, 2009

Filed:

Dec 22, 2006

Appl. No.:

11/615297

Inventors:

Edmun ChianSong Seng - Singapore, SG
UttHeng Kan - Singapore, SG
AC Lim - Singapore, SG
Det Hau Wu - Singapore, SG
Lin Nah Lim - Singapore, SG
Stanton M. Keeler - Longmont CO, US
Curtis M. Pleiss - Boulder CO, US

Assignee:

Seagate Technology LLC - Scotts Valley CA

International Classification:

H03M 13/00

US Classification:

714755

Abstract:

A method of recovering data on a storage medium is provided. A first error correction scheme is performed on a high risk region of the storage medium. A second error correction scheme is performed on a remaining portion of the storage medium.

US Patent:

8583986, Nov 12, 2013

Filed:

Dec 17, 2008

Appl. No.:

12/337133

Inventors:

Stanton MacDonough Keeler - Longmont CO, US
John Edward Moon - Superior CO, US

Assignee:

Seagate Technology LLC - Cupertino CA

International Classification:

G11C 29/00

US Classification:

714763

Abstract:

In a particular embodiment, a storage device is disclosed that includes a solid-state storage media. The storage device further includes a read/write circuit including an error correction coding (ECC) encoder/decoder adapted to write data and associated ECC information to the solid-state storage media without performing a read-verify operation.