Western Digital Technologies, Inc.

Western Digital Ventures, Inc.

Kenneth J Smith

Jonathan Lee Hanmann

Anil Sareen

Chun Sei Tsai

Carl E Barlow

Sang Huynh

William Bernard Boyle

Heon Ho Chung

Anil Sareem

Johnathan C Lloyd

Grease wear leveling in a disk drive including an actuator for moving a head over a disk as part of a seek operation. A count of seek operations is maintained and when the count of seek operations exceeds a first threshold number, one or more full stroke seek (FSS) operations are performed until a count of the FSS operations performed reaches a predetermined number. The FSS operation includes moving the head through a substantially wide range of motion. For each of the one or more FSS operations performed, the count of FSS operations performed is adjusted based on whether the most recent FSS operation was performed within a time window. The time window is based at least on a number of interval seek operations performed since a previously performed FSS operation.

Grease wear leveling for a disk drive

A method to enable defect margining of a disk drive may comprise executing a data access command on a target sector on the disk drive. Upon encountering a data access error at the target sector, an address of the target sector may be added to an error list. The address of the target sector in the error list may then be converted to a physical location on the disk drive. A thermal asperity scan may be performed at and around the physical location and, upon detecting a thermal asperity, and at least sectors around the detected thermal asperity may be margined, and the data stored within the margined sectors may be relocated. Instead of sectors, entire tracks may be margined and the data stored therein relocated to a spare or reserve location, one track at a time.

Methods and devices for preventing potential media errors from growing thermal asperities

Systems and methods for performing refresh operations using write/read commands are provided. In one embodiment, a disk drive comprises a disk partitioned into a plurality of refresh zones, a head configured to write data to and read data from the disk, and a controller. The controller is configured to receive an access command, to read data from at least one of the refresh zones using the head in response to the access command, to check a condition of the read data, and to determine whether to refresh the at least one refresh zone based on the condition of the read data, wherein the read data includes data from a portion of the at least one refresh zone not being accessed by the access command.

Refresh operations using write/read commands

A disk drive is disclosed comprising a disk having a plurality of data sectors, wherein a physical block address (PBA) is associated with each data sector. When a write command is received from a host to write user data to the disk, and the write command comprises an unformatted logical block address (LBA), the user data is written to a first data sector, and the first data sector is write verified. A second data sector is defect scanned, and after the second data sector passes the defect scan, the user data is migrated from the first data sector to the second data sector and the LBA is formatted to the second data sector.

Disk drive write verifying unformatted data sectors

The present invention may be regarded as a method of operating a mobile terminal during a synchronization session. A plurality of data types, including a first data type and a second data type, are identified to synchronize with the mobile terminal. A rule base is applied to assign the first data type to a first communication channel and the second data type to a second communication channel. Synchronization data of the first data type is exchanged over the first communication channel, and synchronization data of the second data type is exchanged over the second communication channel.

Using multiple communication channels to synchronize a mobile terminal based on data type

A method of operating a mobile terminal comprising a local memory and a screen is disclosed. The method comprises the steps of receiving a first component of a document over a first communication channel, receiving a second component of the document over a second communication channel, and combining the first and second components of the document at the mobile terminal. In an alternative embodiment, the first component of the document is received during a first synchronization session, and the second component of the document is received during a second synchronization session.

Mobile terminal synchronizing components of a document separately

A method and apparatus for remotely synchronizing a mobile terminal to a target computer is disclosed. A user's operation of the mobile terminal is monitored and a computer program is executed for adapting ordering and filtering synchronization rules in response to the user's operation of the mobile terminal to generate a modified set of synchronization rules. Synchronization data is exchanged between the target computer and the mobile terminal using the modified set of synchronization rules.

Remotely synchronizing a mobile terminal by adapting ordering and filtering synchronization rules based on a user's operation of the mobile terminal

A method of operating a mobile terminal comprising a local memory and a screen is disclosed. Web pages are received by the mobile terminal and stored in the local memory. A cache status of each web page identified by each link is determined, wherein the cache status is evaluated to control the display of the links of a web page on the screen of the mobile terminal.

Modifying web page links for display on a mobile terminal to indicate the cache status of linked web pages

A method and apparatus are disclosed for transmitting advertising information to a mobile terminal over a first connection during a synchronization session and storing the advertising information in a local memory of the mobile terminal. A rich text document is transmitted to the mobile terminal over a second connection, wherein the rich text document comprises conditional code comprising advertising display criteria including a first identifier for retrieving selected advertising information stored in the local memory of the mobile terminal and a second identifier for downloading the selected advertising information from the Internet.

Mobile terminal for displaying a rich text document comprising conditional code for identifying advertising information stored locally or on the internet

A method and apparatus are disclosed for transmitting advertising information comprising a plurality of banner ads to a mobile terminal over a first connection during a synchronization session and storing the advertising information in a local memory of the mobile terminal. A web page is transmitted to the mobile terminal over a second connection, wherein the web page comprises web page content including a banner ad display area for displaying a banner ad. During a first time interval, a first one of the banner ads is retrieved from the local memory and the web page content is displayed on the screen of the mobile terminal together with the first one of the banner ads in the banner ad display area. During a second time interval, a second one of the banner ads is retrieved from the local memory and the web page content is displayed on the screen of the mobile terminal together with the second one of the banner ads in the banner ad display area.

Growing community of inventors

Corona, CA, United States of America

Kenneth J Smith