Patents by Inventor Arunkumar Subramanian

Arunkumar Subramanian 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: 9128710
    Abstract: A read back bit sequence and charge constraint information are obtained. A lower bound on a number of bit errors associated with the read back bit sequence is determined based at least in part on the read back bit sequence and the charge constraint information. The lower bound and an error correction capability threshold associated with an error correction decoder are compared. In the event the lower bound is greater than or equal to the error correction capability threshold, an error correction decoding failure is predicted and in response to the prediction a component is configured to save power.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: September 8, 2015
    Assignee: SK hynix memory solutions inc.
    Inventors: Arunkumar Subramanian, Frederick K. H. Lee, Jason Bellorado, Xiangyu Tang, Lingqi Zeng
  • Patent number: 9064595
    Abstract: A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A slope and a y intercept are determined based at least in part on the first read threshold, the second read threshold, the first page number, and the second page number. The slope and the y intercept are stored with a block identifier associated with the block.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: June 23, 2015
    Assignee: SK hynix memory solutions inc.
    Inventors: Arunkumar Subramanian, Xiangyu Tang, Jason Bellorado, Lingqi Zeng, Frederick K. H. Lee
  • Publication number: 20150138894
    Abstract: A read is performed using a first iteration of a read threshold voltage that is set to a default voltage to obtain a first characteristic. A second iteration of the read threshold voltage is generated using the default voltage and an offset. A read is performed using the second iteration of the read threshold voltage to obtain a second characteristic. A third iteration of the read threshold voltage is generated using the first and second characteristics. A read is performed using the third iteration of the read threshold voltage to obtain a third characteristic. It is determined if the third characteristic is one of the two characteristics closest to a stored characteristic. If so, a fourth iteration of the read threshold voltage is generated using the two closest characteristics.
    Type: Application
    Filed: November 18, 2014
    Publication date: May 21, 2015
    Inventors: Xiangyu Tang, Lingqi Zeng, Jason Bellorado, Frederick K.H. Lee, Arunkumar Subramanian
  • Publication number: 20150085572
    Abstract: A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A slope and a y intercept are determined based at least in part on the first read threshold, the second read threshold, the first page number, and the second page number. The slope and the y intercept are stored with a block identifier associated with the block.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 26, 2015
    Inventors: Arunkumar Subramanian, Xiangyu Tang, Jason Bellorado, Lingqi Zeng, Frederick K.H. Lee
  • Publication number: 20150078084
    Abstract: A first bit position of a cell in solid state storage is read where a sorting bit is obtained using the read of the first bit position. A second bit position of the cell is read for a first time, including by setting a first read threshold associated with the second bit position to a first value and setting a second read threshold associated with the second bit position to a second value. The second bit position of the cell is read for a second time, including by setting the first read threshold to a third value and setting the second read threshold to a fourth value. A new value for the first read threshold and for the second read threshold is generated using the sorting bit, the first read, and the second read.
    Type: Application
    Filed: November 21, 2014
    Publication date: March 19, 2015
    Inventors: Frederick K.H. Lee, Jason Bellorado, Arunkumar Subramanian, Lingqi Zeng, Xiangyu Tang, Ameen Aslam
  • Patent number: 8937838
    Abstract: An expected value associated with stored values in solid state storage, as well as a set of three or more points are obtained where the three or more points include a voltage and a value associated with stored values. Two points having ratios closest to the expected value are selected from the set. A voltage is determined based at least in part on the selected two points and the expected value.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: January 20, 2015
    Assignee: SK hynix memory solutions inc.
    Inventors: Xiangyu Tang, Lingqi Zeng, Jason Bellorado, Frederick K. H. Lee, Arunkumar Subramanian
  • Patent number: 8923062
    Abstract: A next read threshold is determined by determining a first number of solid state storage cells having a stored voltage which falls into a first voltage range and determining a second number of solid state storage cells having a stored voltage which falls into a second voltage range. A gradient is determine by taking a difference between the first number of solid state storage cells and the second number of solid state storage cells. The next read threshold is determined based at least in part on the gradient.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: December 30, 2014
    Assignee: SK hynix memory solutions inc.
    Inventors: Frederick K. H. Lee, Jason Bellorado, Arunkumar Subramanian, Lingqi Zeng, Xiangyu Tang, Ameen Aslam
  • Patent number: 8923066
    Abstract: A first read threshold associated with a first page in a block and a second read threshold associated with a second page in the block are received, where the first page has a first page number and the second page has a second page number. A slope and a y intercept are determined based at least in part on the first read threshold, the second read threshold, the first page number, and the second page number. The slope and the y intercept are stored with a block identifier associated with the block.
    Type: Grant
    Filed: March 28, 2013
    Date of Patent: December 30, 2014
    Assignee: SK hynix memory solutions inc.
    Inventors: Arunkumar Subramanian, Xiangyu Tang, Jason Bellorado, Lingqi Zeng, Frederick K. H. Lee
  • Publication number: 20140325320
    Abstract: A set of one or more component syndromes associated with a turbo product code (TPC) codeword is obtained from a component syndrome buffer. Component decoding is performed on the set of one or more component syndromes.
    Type: Application
    Filed: March 19, 2014
    Publication date: October 30, 2014
    Inventors: Arunkumar Subramanian, Naveen Kumar, Zheng Wu, Lingqi Zeng, Jason Bellorado
  • Publication number: 20140233317
    Abstract: A victim group of one or more cells is read using a first read threshold to obtain a first raw read which includes one or more values. The victim group of cells is read using a second read threshold to obtain a second raw read which includes one or more values. A neighboring read, corresponding to a neighboring group of one or more cells associated with the victim group of cells, is obtained. A composite read is generated, including by selecting from at least the first raw read and the second raw read based at least in part on the neighboring read.
    Type: Application
    Filed: November 4, 2013
    Publication date: August 21, 2014
    Inventors: Jason Bellorado, Arunkumar Subramanian, Marcus Marrow, Zheng Wu, Lingqi Zeng
  • Patent number: 8680723
    Abstract: A linear actuator includes a stationary part, a movable part moveably supported by the stationary part, and at least one elastic member disposed between the movable part and the stationary part. The stationary part includes a stator core with a pair of teeth extending inwardly there from, and a winding wound on each of the teeth. The movable part disposed between the teeth includes two pairs of permanent magnetic poles respectively facing the teeth and an output shaft projecting in a first direction. When the windings are electrified, the stationary part generates a magnetic field which interacts with the permanent magnetic poles to reciprocate the movable part relative to the stationary part in a second direction perpendicular to the first direction.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: March 25, 2014
    Assignee: Johnson Electric S.A.
    Inventors: Arunkumar Subramanian, HongTao Wang, JinHui Huang
  • Publication number: 20140013166
    Abstract: A read back bit sequence and charge constraint information are obtained. A lower bound on a number of bit errors associated with the read back bit sequence is determined based at least in part on the read back bit sequence and the charge constraint information. The lower bound and an error correction capability threshold associated with an error correction decoder are compared. In the event the lower bound is greater than or equal to the error correction capability threshold, an error correction decoding failure is predicted and in response to the prediction a component is configured to save power.
    Type: Application
    Filed: May 24, 2013
    Publication date: January 9, 2014
    Inventors: Arunkumar Subramanian, Frederick K.H. Lee, Jason Bellorado, Xiangyu Tang, Lingqi Zeng
  • Patent number: 8591398
    Abstract: A telescopic tilting device 12 comprises a telescopic arm 14 which is extendable and retractable along an arcuate path 16. Preferably, the telescopic arm 14 includes two arcuate members 22, 24 which are telescopically slidable relative to each other. More preferably, the device further comprises a drive unit 20 having a flexible belt 43 for moving the telescopic arm 14. There is also provided an endoscope holding device 10 which has such a telescopic tilting device 12.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: November 26, 2013
    Assignee: Johnson Electric S.A.
    Inventors: Arunkumar Subramanian, Kabilan Santhanam, Ning Tang
  • Publication number: 20130229867
    Abstract: A starting read threshold is received. A first offset and a second offset is determined. A first read is performed at the starting read threshold offset by the first offset to obtain a first hard read value and a second read is performed at the starting read threshold offset by the second offset to obtain a second hard read value. A soft read value is generated based at least in part on the first hard read value and the second hard read value.
    Type: Application
    Filed: January 22, 2013
    Publication date: September 5, 2013
    Applicant: LINK_A_MEDIA DEVICES CORPORATION
    Inventors: Xiangyu Tang, Frederick K.H. Lee, Jason Bellorado, Arunkumar Subramanian, Lingqi Zeng
  • Patent number: 8414470
    Abstract: An endoscope device comprises a replaceable endoscope probe, a carriage for holding the endoscope probe, a zoom unit, a tilting unit, and a rotation unit. Preferably, the tilting unit comprises a telescopic arm which is extendable and retractable along an arcuate path, the telescopic arm includes two rigid arcuate members which are telescopically slidable relative to each other, wherein the tilting device is rotatable about an axis of rotation which passes through the fixed point, so that the telescopic arm is movable in a plane perpendicular to the axis of rotation.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: April 9, 2013
    Assignee: Johnson Electric S.A.
    Inventors: Arunkumar Subramanian, Kabilan Santhanam, Ning Tang
  • Publication number: 20120227269
    Abstract: A linear actuator includes a stationary part, a movable part moveably supported by the stationary part, and at least one elastic member disposed between the movable part and the stationary part. The stationary part includes a stator core with a pair of teeth extending inwardly there from, and a winding wound on each of the teeth. The movable part disposed between the teeth includes two pairs of permanent magnetic poles respectively facing the teeth and an output shaft projecting in a first direction. When the windings are electrified, the stationary part generates a magnetic field which interacts with the permanent magnetic poles to reciprocate the movable part relative to the stationary part in a second direction perpendicular to the first direction.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 13, 2012
    Inventors: Arunkumar SUBRAMANIAN, Hong Tao Wang, JinHui Huang
  • Publication number: 20120227531
    Abstract: A telescopic tilting device 12 comprises a telescopic arm 14 which is extendable and retractable along an arcuate path 16. Preferably, the telescopic arm 14 includes two arcuate members 22, 24 which are telescopically slidable relative to each other. More preferably, the device further comprises a drive unit 20 having a flexible belt 43 for moving the telescopic arm 14. There is also provided an endoscope holding device 10 which has such a telescopic tilting device 12.
    Type: Application
    Filed: May 23, 2012
    Publication date: September 13, 2012
    Inventors: Arunkumar SUBRAMANIAN, Kabilan Santhanam, Ning Tang
  • Publication number: 20120175995
    Abstract: A motor stator includes a plurality of separate core segments, a plurality of coils, and a fixing ring. Each core segment includes a yoke and a tooth extending from the yoke. The yokes are connected to form a substantially circular core, with the teeth extending inwards. Each coil is wound around a corresponding tooth. The fixing ring is fixed to the outer surface of the core.
    Type: Application
    Filed: December 27, 2011
    Publication date: July 12, 2012
    Inventors: Bao Ting LIU, Xiao Peng Ma, Arunkumar Subramanian
  • Publication number: 20090241705
    Abstract: A telescopic tilting device 12 comprises a telescopic arm 14 which is extendable and retractable along an arcuate path 16. Preferably, the telescopic arm 14 includes two arcuate members 22, 24 which are telescopically slidable relative to each other. More preferably, the device further comprises a drive unit 20 having a flexible belt 43 for moving the telescopic arm 14. There is also provided an endoscope holding device 10 which has such a telescopic tilting device 12.
    Type: Application
    Filed: March 27, 2009
    Publication date: October 1, 2009
    Inventors: Arunkumar Subramanian, Kabilan Santhanam, Ning Tang
  • Patent number: 7329853
    Abstract: A spectrally tunable optical detector and methods of manufacture therefore are provided. In one illustrative embodiment, the tunable optical detector includes a tunable bandpass filter, a detector and readout electronics, each supported by a different substrate. The substrates are secured relative to one another to form the spectrally tunable optical detector.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: February 12, 2008
    Assignee: Honeywell International Inc.
    Inventors: Barrett E. Cole, Robert E. Higashi, Arunkumar Subramanian, Subash Krishnankutty