Patents by Inventor Thein Than Zaw
Thein Than Zaw has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10346096Abstract: Implementations disclosed herein include a method comprising receiving a TRIM request for a media cache in a storage media from a host, determining whether a TRIM range in the TRIM request overlaps with an active operation, invalidating the TRIM range responsive to determining that the TRIM range does not overlap with an active operation, and inserting at least one null node in the media cache. The method may comprise receiving a host read request, performing a media cache search for a read LBA range, and determining where data is located. If all the data is located in the media cache, the system reads from the media cache. If the data is located in a null node, patterning for the null node occurs. If the data is located partially in the main store, the media cache, or a null node, the data may be read, combined, and returned to the host.Type: GrantFiled: June 22, 2018Date of Patent: July 9, 2019Assignee: SEAGATE TECHNOLOGY LLCInventors: Yan Naing, Harry Tiotantra, PohGuat Bay, Thein Than Zaw, CheeHou Peng
-
Publication number: 20190187936Abstract: Implementations disclosed herein include a method comprising receiving a TRIM request for a media cache in a storage media from a host, determining whether a TRIM range in the TRIM request overlaps with an active operation, invalidating the TRIM range responsive to determining that the TRIM range does not overlap with an active operation, and inserting at least one null node in the media cache. The method may comprise receiving a host read request, performing a media cache search for a read LBA range, and determining where data is located. If all the data is located in the media cache, the system reads from the media cache. If the data is located in a null node, patterning for the null node occurs. If the data is located partially in the main store, the media cache, or a null node, the data may be read, combined, and returned to the host.Type: ApplicationFiled: June 22, 2018Publication date: June 20, 2019Inventors: Yan Naing, Harry Tiotantra, PohGuat Bay, Thein Than Zaw, CheeHou Peng
-
Patent number: 10275166Abstract: Systems and methods for saving critical data upon power loss are described. In one embodiment, the systems and methods include performing a write operation to a first track of a storage drive, monitoring a voltage level of a storage drive to detect power loss on the storage drive while performing the write operation, identifying a track ID of a second track adjacent to the first track upon detecting power loss on the storage drive, and storing the identified track ID in a non-volatile memory on the storage drive.Type: GrantFiled: May 4, 2018Date of Patent: April 30, 2019Assignee: SEAGATE TECHNOLOGY LLCInventors: Jin Quan Shen, Yong Peng Chng, Thein Than Zaw, Robertus Hartono
-
Publication number: 20180253241Abstract: Systems and methods for saving critical data upon power loss are described. In one embodiment, the systems and methods include performing a write operation to a first track of a storage drive, monitoring a voltage level of a storage drive to detect power loss on the storage drive while performing the write operation, identifying a track ID of a second track adjacent to the first track upon detecting power loss on the storage drive, and storing the identified track ID in a non-volatile memory on the storage drive.Type: ApplicationFiled: May 4, 2018Publication date: September 6, 2018Applicant: SEAGATE TECHNOLOGY LLCInventors: Jin Quan Shen, Yong Peng Chng, Thein Than Zaw, Robertus Hartono
-
Patent number: 10025534Abstract: Implementations disclosed herein include a method comprising receiving a TRIM request for a media cache in a storage media from a host, determining whether a TRIM range in the TRIM request overlaps with an active operation, invalidating the TRIM range responsive to determining that the TRIM range does not overlap with an active operation, and inserting at least one null node in the media cache. The method may comprise receiving a host read request, performing a media cache search for a read LBA range, and determining where data is located. If all the data is located in the media cache, the system reads from the media cache. If the data is located in a null node, patterning for the null node occurs. If the data is located partially in the main store, the media cache, or a null node, the data may be read, combined, and returned to the host.Type: GrantFiled: December 20, 2017Date of Patent: July 17, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Yan Naing, Harry Tiotantra, PohGuat Bay, Thein Than Zaw, CheeHou Peng
-
Patent number: 9983811Abstract: Systems and methods for saving critical data upon power loss are described. In one embodiment, the systems and methods include performing a write operation to a first track of a storage drive, monitoring a voltage level of a storage drive to detect power loss on the storage drive while performing the write operation, identifying a track ID of a second track adjacent to the first track upon detecting power loss on the storage drive, and storing the identified track ID in a non-volatile memory on the storage drive.Type: GrantFiled: May 25, 2016Date of Patent: May 29, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Jin Quan Shen, Yong Peng Chng, Thein Than Zaw, Robertus Hartono
-
Patent number: 9971645Abstract: Apparatus and method for managing a media cache of a data storage device. In some embodiments, a media cache master table is maintained in a memory as a data structure having a plurality of entries that describe data sets stored in a non-volatile media cache memory. A first timecode stamp value is written to respective first and second locations in the table at the commencement of a data transfer operation to transfer data associated with the plurality of entries in the table. The first location is updated with a new, second timecode stamp value responsive to detection of an error condition that interrupts the data transfer operation. An error recovery operation is subsequently performed responsive to a detected mismatch between the timecode stamp values in the first and second locations.Type: GrantFiled: August 23, 2016Date of Patent: May 15, 2018Assignee: Seagate Technology LLCInventors: Jian Qiang, WenXiang Xie, Thein Than Zaw, Brian T. Edgar
-
Publication number: 20180060162Abstract: Apparatus and method for managing a media cache of a data storage device. In some embodiments, a media cache master table is maintained in a memory as a data structure having a plurality of entries that describe data sets stored in a non-volatile media cache memory. A first timecode stamp value is written to respective first and second locations in the table at the commencement of a data transfer operation to transfer data associated with the plurality of entries in the table. The first location is updated with a new, second timecode stamp value responsive to detection of an error condition that interrupts the data transfer operation. An error recovery operation is subsequently performed responsive to a detected mismatch between the timecode stamp values in the first and second locations.Type: ApplicationFiled: August 23, 2016Publication date: March 1, 2018Inventors: Jian Qiang, WenXiang Xie, Thein Than Zaw, Brian T. Edgar
-
Patent number: 9875030Abstract: A method or system comprises determining an end data track of a write operation in response to a request for the write operation in a media storage device, saving data from an adjacent track following the end data track to a cache, performing the write operation. In one implementation, performing the write operation is comprises writing data to a plurality of data tracks in a band.Type: GrantFiled: July 29, 2015Date of Patent: January 23, 2018Assignee: SEAGATE TECHNOLOGY LLCInventors: Thein Than Zaw, Shen Feng
-
Publication number: 20170344279Abstract: Systems and methods for saving critical data upon power loss are described. In one embodiment, the systems and methods include performing a write operation to a first track of a storage drive, monitoring a voltage level of a storage drive to detect power loss on the storage drive while performing the write operation, identifying a track ID of a second track adjacent to the first track upon detecting power loss on the storage drive, and storing the identified track ID in a non-volatile memory on the storage drive.Type: ApplicationFiled: May 25, 2016Publication date: November 30, 2017Applicant: SEAGATE TECHNOLOGY LLCInventors: Jin Quan Shen, Yong Peng Chng, Thein Than Zaw, Robertus Hartono
-
Publication number: 20150331613Abstract: A method or system comprises determining an end data track of a write operation in response to a request for the write operation in a media storage device, saving data from an adjacent track following the end data track to a cache, performing the write operation. In one implementation, performing the write operation is comprises writing data to a plurality of data tracks in a band.Type: ApplicationFiled: July 29, 2015Publication date: November 19, 2015Inventors: Thein Than Zaw, Shen Feng
-
Patent number: 9171574Abstract: A disc data storage medium can include a shingled band of tracks, some of which do not map to host accessible logical block address. The tracks that do not map to host accessible logical block addresses (cache tracks) can store cache data and may map to disc accessible logical block addresses. Data operations can be performed on the data in the cache tracks, and the data may then be moved to storage regions mapped to host logical block addresses.Type: GrantFiled: November 22, 2013Date of Patent: October 27, 2015Assignee: Seagate Technology LLCInventors: Thein Than Zaw, Shen Feng
-
Publication number: 20150169460Abstract: A method or system comprises determining an end data track of a write operation in response to a request for the write operation in a shingled media storage device, saving data from an adjacent track following the end data track to a cache, performing the write operation.Type: ApplicationFiled: December 13, 2013Publication date: June 18, 2015Applicant: Seagate Technology LLCInventors: Thein Than Zaw, Shen Feng