Patents by Inventor Yuen Lai
Yuen Lai 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).
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Patent number: 10395683Abstract: A heater power of a heat-assisted magnetic recording head is set based on an initial head-medium clearance estimate in response to the heater power. For a plurality of iterations, an optimum laser power of the recording head is determined and a heater power is set for a next iteration that results in an optimum heater power for the optimum laser power. If differences in the heater and laser powers between two subsequent iterations are below thresholds, the iterations are stopped and the optimum heater power and the optimum laser power for one of the subsequent iterations are used as an operational heater power and an operational laser power.Type: GrantFiled: September 20, 2018Date of Patent: August 27, 2019Assignees: Seagate Technology LLC, SAE Magnetics (Hong Kong) LimitedInventors: Tim Rausch, Tatsuya Shimizu, Wai Yuen Lai, Kai Chiu Cheung
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Publication number: 20190019531Abstract: A heater power of a heat-assisted magnetic recording head is set based on an initial head-medium clearance estimate in response to the heater power. For a plurality of iterations, an optimum laser power of the recording head is determined and a heater power is set for a next iteration that results in an optimum heater power for the optimum laser power. If differences in the heater and laser powers between two subsequent iterations are below thresholds, the iterations are stopped and the optimum heater power and the optimum laser power for one of the subsequent iterations are used as an operational heater power and an operational laser power.Type: ApplicationFiled: September 20, 2018Publication date: January 17, 2019Inventors: Tim Rausch, Tatsuya Shimizu, Wai Yuen Lai, Kai Chiu Cheung
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Patent number: 9169291Abstract: The invention relates to covalent conjugates between endoperoxides and small peptides and organic compounds that bind to molecular cavities on the transferrin or lactoferrin receptor, and the use of compositions comprising these conjugates to treat cancer, hyperproliferative disorders, inflammatory diseases, and infections.Type: GrantFiled: February 14, 2011Date of Patent: October 27, 2015Assignee: University of WashingtonInventors: Tomikazu Sasaki, Henry Chiu-Yuen Lai, Narendra Pal Singh, Steve J. Oh
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Patent number: 8531138Abstract: A method includes receiving a sense signal having multiple pulses, where the sense signal is based on an output of a dimmer. The method also includes, for each of multiple sampling periods, sampling a subset of the pulses in the sense signal during that sampling period. The method further includes generating a holding current for the dimmer during the sampling of the subset of pulses in at least one of the sampling periods. In addition, the method includes, for each of the sampling periods, generating an output value identifying a duty cycle for driving one or more light emitting diodes (LEDs). The subset of pulses in each of the sampling periods includes multiple pulses during that sampling period but not one or more initial pulses at a beginning of that sampling period.Type: GrantFiled: October 14, 2010Date of Patent: September 10, 2013Assignee: National Semiconductor CorporationInventors: Steven M. Barrow, James H. Masson, Daniel R. Herrington, Irwin R. Nederbragt, Chi Yuen Lai
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Patent number: 8107200Abstract: A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnections between upper and lower shields of the read head and a grounded slider substrate and a low resistance interconnection between the lower pole piece of the write head and the substrate. The capacitances between the pole piece and the upper shield, the upper shield and the lower shield and the lower shield and the substrate are made equal by either forming the shields and pole piece with equal surface areas and separating them with dielectrics of equal thicknesses, or by keeping the ratio of area to insulator thicknesses equal.Type: GrantFiled: June 19, 2008Date of Patent: January 31, 2012Assignees: Headway Technologies, Inc., SAE Magnetics (HK) Ltd.Inventors: Eric Cheuk Wing Leung, Anthony Wai Yuen Lai, Pak Kin Wong, David Hu, Moris Dovek, Rod Lee
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Publication number: 20110150830Abstract: The invention relates to covalent conjugates between endoperoxides and small peptides and organic compounds that bind to molecular cavities on the transferrin or lactoferrin receptor, and the use of compositions comprising these conjugates to treat cancer, hyperproliferative disorders, inflammatory diseases, and infections.Type: ApplicationFiled: February 14, 2011Publication date: June 23, 2011Applicant: WASHINGTON, UNIVERSITY OFInventors: Tomikazu Sasaki, Henry Chiu-Yuen Lai, Narendra Pal Singh, Steve J. Oh
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Publication number: 20110115395Abstract: A method includes receiving a sense signal having multiple pulses, where the sense signal is based on an output of a dimmer. The method also includes, for each of multiple sampling periods, sampling a subset of the pulses in the sense signal during that sampling period. The method further includes generating a holding current for the dimmer during the sampling of the subset of pulses in at least one of the sampling periods. In addition, the method includes, for each of the sampling periods, generating an output value identifying a duty cycle for driving one or more light emitting diodes (LEDs). The subset of pulses in each of the sampling periods includes multiple pulses during that sampling period but not one or more initial pulses at a beginning of that sampling period.Type: ApplicationFiled: October 14, 2010Publication date: May 19, 2011Applicant: NATIONAL SEMICONDUCTOR CORPORATIONInventors: Steven M. Barrow, James H. Masson, Daniel R. Herrington, Irwin R. Nederbragt, Chi Yuen Lai
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Patent number: 7764468Abstract: Provided is a smear-removing method that can remove smear of a manufactured thin-film magnetic head. The method is performed to a thin-film magnetic head including an MR effect element for reading data having two electrode layers sandwiching an MR effect multilayer as a magneto-sensitive portion therebetween. The method comprises the step of applying a stress voltage less than a breaking voltage of the MR effect element between the two electrode layers to burn off smear. In the method, it is preferable that the stress voltage is applied while an electric resistance or an output voltage of the MR effect element is measured, and the stress voltage is increased until the value of the electric resistance or the output voltage reaches an upper limit specified value specified from a value of an electric resistance or an output voltage in a normal case where smear is not present.Type: GrantFiled: April 16, 2007Date of Patent: July 27, 2010Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.Inventors: Yoshikazu Sawada, Norio Takahashi, Masaru Hirose, Mitsuo Otsuki, Shoji Toyoda, Anthony Wai Yuen Lai
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Slider with improved structure for adjusting flying height thereof and hard disk drive with the same
Publication number: 20080273267Abstract: A slider has a slider substrate, a read sensor, a top shield and a bottom shield sandwiching the read sensor, and a write shield. The slider substrate is electrically connected to a substrate electrical connection which is adapted to provide a flying height control voltage to the slider substrate for realizing EFH control so that the bottom shield and the write shield both are electrically connected to a ground electrical connection to eliminate pits on shields of the slider as well as reduce electrostatic discharge (ESD) damage and noise during EFH operation. The slider also employs a bottom plate, a heater and a shunting circuit with shunting resistances to optimum reading and/or writing performance by further better preventing noise, cross-talk and ESD. The present invention also discloses a hard disk drive with the slider for adjusting the slider's flying height.Type: ApplicationFiled: May 1, 2007Publication date: November 6, 2008Applicant: SAE Magnetics (H.K.) Ltd.Inventor: Anthony Wai Yuen Lai -
Publication number: 20080259506Abstract: A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnections between upper and lower shields of the read head and a grounded slider substrate and a low resistance interconnection between the lower pole piece of the write head and the substrate. The capacitances between the pole piece and the upper shield, the upper shield and the lower shield and the lower shield and the substrate are made equal by either forming the shields and pole piece with equal surface areas and separating them with dielectrics of equal thicknesses, or by keeping the ratio of area to insulator thicknesses equal.Type: ApplicationFiled: June 19, 2008Publication date: October 23, 2008Inventors: Eric Cheuk Wing Leung, Anthony Wai Yuen Lai, Pak Kin Wong, David Hu, Moris Dovek, Rod Lee
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Publication number: 20080251099Abstract: Provided is a smear-removing method that can remove smear of a manufactured thin-film magnetic head. The method is performed to a thin-film magnetic head including an MR effect element for reading data having two electrode layers sandwiching an MR effect multilayer as a magneto-sensitive portion therebetween. The method comprises the step of applying a stress voltage less than a breaking voltage of the MR effect element between the two electrode layers to burn off smear. In the method, it is preferable that the stress voltage is applied while an electric resistance or an output voltage of the MR effect element is measured, and the stress voltage is increased until the value of the electric resistance or the output voltage reaches an upper limit specified value specified from a value of an electric resistance or an output voltage in a normal case where smear is not present.Type: ApplicationFiled: April 16, 2007Publication date: October 16, 2008Applicants: TDK CORPORATION, SAE Magnetics (H.K.) Ltd.Inventors: Yoshikazu SAWADA, Norio Takahashi, Masaru Hirose, Mitsuo Otsuki, Shoji Toyoda, Anthony Wai Yuen Lai
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Patent number: 7392579Abstract: A slider mounted CPP GMR or TMR read head sensor is protected from electrostatic discharge (ESD) damage and from noise and cross-talk from an adjacent write head by means of a balanced resistive/capacitative shunt. The shunt includes highly resistive interconnections between upper and lower shields of the read head and a grounded slider substrate and a low resistance interconnection between the lower pole piece of the write head and the substrate. The capacitances between the pole piece and the upper shield, the upper shield and the lower shield and the lower shield and the substrate are made equal by either forming the shields and pole piece with equal surface areas and separating them with dielectrics of equal thicknesses, or by keeping the ratio of area to insulator thicknesses equal.Type: GrantFiled: March 7, 2005Date of Patent: July 1, 2008Assignees: Headway Technologies, Inc., SAE Magnetics (HK) Ltd.Inventors: Eric Cheuk Wing Leung, Anthony Wai Yuen Lai, Pak Kin Wong, David Hu, Moris Dovek, Rod Lee
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Publication number: 20070231300Abstract: The invention relates to covalent conjugates between endoperoxides and small peptides and organic compounds that bind to molecular cavities on the transferrin or lactoferrin receptor, and the use of compositions comprising these conjugates to treat cancer, hyperproliferative disorders, inflammatory diseases, and infections.Type: ApplicationFiled: March 28, 2007Publication date: October 4, 2007Applicant: WASHINGTON, UNIVERSITY OFInventors: Tomikazu Sasaki, Henry Chiu-Yuen Lai, Narendra Pal Singh, Steve J. Oh
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Publication number: 20070164108Abstract: A foldable calculator comprising: (i) a main body having an upper cover with a rectangular recess on the outer surface of the upper cover, a lower cover; and a hinge joining the upper cover and the lower cover together, (ii) a display screen, (iii) a keyboard having a first key set (frequently used keys) with relatively large key pressing areas and a second key set (infrequently used keys) with relatively smaller key pressing areas, and (iv) a retractable support member, wherein the upper cover is openable at an angle from the lower cover suitable for a user to view the display screen when the retractable support member is open, and the retractable support member is retractable into the rectangular recess on the outer surface of the upper cover when the retractable support member is not in use.Type: ApplicationFiled: July 6, 2006Publication date: July 19, 2007Applicant: Truly Electronics Manufacturing LimitedInventors: Kan Tam, Shi Zou, Yuen Lai, Ka Au