Patents by Inventor KianSoon Yeo
KianSoon Yeo 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: 7872827Abstract: Various embodiments of the present invention are generally directed to protecting a device from damage due to an impact event at the conclusion of a free fall condition through the use of a biasing signal that maintains a retention force until the impact event is completed.Type: GrantFiled: July 27, 2007Date of Patent: January 18, 2011Assignee: Seagate Technology LLCInventors: JiaHong Shu, TzeMing Jimmy Pang, WeiSung Lee, KianKeong Ooi, KianSoon Yeo, Xiong Liu
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Patent number: 7715145Abstract: In a particular embodiment, a controller is adapted to control a spindle motor that controls rotation of at least one rotatable disc of a storage device. The controller is adapted to increase a spindle speed associated with the spindle motor to an unload spindle speed that is greater than an operating spindle speed during a ramp unload operation.Type: GrantFiled: September 16, 2008Date of Patent: May 11, 2010Assignee: Seagate Technology LLCInventors: KianKeong Ooi, ShuangQuan Min, KianSoon Yeo, WeiSoon Lee
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Publication number: 20100067138Abstract: In a particular embodiment, a controller is adapted to control a spindle motor that controls rotation of at least one rotatable disc of a storage device. The controller is adapted to increase a spindle speed associated with the spindle motor to an unload spindle speed that is greater than an operating spindle speed during a ramp unload operation.Type: ApplicationFiled: September 16, 2008Publication date: March 18, 2010Applicant: Seagate TechnologyInventors: KianKeong Ooi, ShuangQuan Min, KianSoon Yeo, WeiSoon Lee
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Publication number: 20090027798Abstract: Various embodiments of the present invention are generally directed to protecting a device from damage due to an impact event at the conclusion of a free fall condition through the use of a biasing signal that maintains a retention force until the impact event is completed.Type: ApplicationFiled: July 27, 2007Publication date: January 29, 2009Applicant: Seagate Technology LLCInventors: JiaHong Shu, TzeMing Jimmy Pang, WeiSung Lee, KianKeong Ooi, KianSoon Yeo, Xiong Liu
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Patent number: 7295395Abstract: A motion pattern of an actuator supporting a head is monitored during/after a disc spin-up. The monitor's signal is configured to generate a digital indication of where the head was just before the spin-up. The digital indication is optionally a single-bit indicator that is used directly as a decision of whether to continue a start-up operation.Type: GrantFiled: March 12, 2004Date of Patent: November 13, 2007Assignee: Seagate Technology LLCInventors: ChoonHoe Koh, HengChang Guo, WaiKhay Chan, JiaHong Shu, KianKeong Ooi, KianSoon Yeo, BengWee Quak, YuNang Zai, Kong Yaw Lucas Lee
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Patent number: 7190542Abstract: A method, apparatus, and combination for reducing acoustical noise at start-up of a device is disclosed. The method includes the steps of determining an internal temperature of the device, and unlatching an actuator of the device based on the determined internal temperature of the device, by steps for unlatching the actuator of the device. The apparatus includes a thermistor providing a resistance value to a controller that selects an unlatch process based on the resistance value of the thermistor, and an unlatch procedure programmed into the controller executing the selected unlatch process. The device combination includes a base deck supporting an actuator confined by a magnetic latch for periods of inactivity, and unlatched from the magnetic latch for periods of activity by steps for unlatching the actuator.Type: GrantFiled: February 20, 2004Date of Patent: March 13, 2007Assignee: Seagate Technology LLCInventors: KianSoon Yeo, JiaHong Shu, JackMing Teng, KianKeong Ooi
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Patent number: 7133227Abstract: A method of determining and monitoring head polarity of data heads comprises performing a head polarity detection routine. The head polarity detection routine comprises the step of setting a read gate period duration to a first value. The routine also comprises searching for a good address mark signal during a first read gate period with a channel polarity set to a first polarity. The routine further comprises identifying a polarity of a data head based upon the channel polarity when the good address mark is detected.Type: GrantFiled: January 21, 2004Date of Patent: November 7, 2006Assignee: Seagate Technology LLCInventors: TaiVie Chiang, WingKong Chiang, KianKeong Ooi, KianSoon Yeo, MingZhong Ding
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Patent number: 6995946Abstract: Methods relating to compensating a pre-defined seek profile for use in a data storage device, such as a disc drive, to manage the internal temperature of the device are disclosed. One embodiment disclosed is related to determining a seek profile compensation value that can be used to compensate the pre-defined seek profile for temperature. Another embodiment is a method of using a seek profile compensation value during device operation to maintain the data storage device operating temperature below an operating temperature threshold. Yet another embodiment of the present invention may be thought of as a controller for a data storage device. The controller comprises a microprocessor having a pre-determined seek profile and a means for compensating the pre-determined seek profile based on a current operating temperature.Type: GrantFiled: June 27, 2003Date of Patent: February 7, 2006Assignee: Seagate Technology LLCInventors: Mingzhong Ding, KianSoon Yeo, JianYi Wang, KianKeong Ooi, BengWee Quak
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Publication number: 20050201000Abstract: A motion pattern of an actuator supporting a head is monitored during/after a disc spin-up. The monitor's signal is configured to generate a digital indication of where the head was just before the spin-up. The digital indication is optionally a single-bit indicator that is used directly as a decision of whether to continue a start-up operation.Type: ApplicationFiled: March 12, 2004Publication date: September 15, 2005Inventors: ChoonHoe Koh, HengChang Guo, WaiKhay Chan, JiaHong Shu, KianKeong Ooi, KianSoon Yeo, BengWee Quak, YuNang Zai, Kong Lee
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Publication number: 20050157415Abstract: A method of determining and monitoring head polarity of data heads comprises performing a head polarity detection routine. The head polarity detection routine comprises the step of setting a read gate period duration to a first value. The routine also comprises searching for a good address mark signal during a first read gate period with a channel polarity set to a first polarity. The routine further comprises identifying a polarity of a data head based upon the channel polarity when the good address mark is detected.Type: ApplicationFiled: January 21, 2004Publication date: July 21, 2005Inventors: TaiVie Chiang, WingKong Chiang, KianKeong Ooi, KianSoon Yeo, MingZhong Ding
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Publication number: 20050046992Abstract: A method, apparatus, and combination for reducing acoustical noise at start-up of a device is disclosed. The method includes the steps of determining an internal temperature of the device, and unlatching an actuator of the device based on the determined internal temperature of the device, by steps for unlatching the actuator of the device. The apparatus includes a thermistor providing a resistance value to a controller that selects an unlatch process based on the resistance value of the thermistor, and an unlatch procedure programmed into the controller executing the selected unlatch process. The device combination includes a base deck supporting an actuator confined by a magnetic latch for periods of inactivity, and unlatched from the magnetic latch for periods of activity by steps for unlatching the actuator.Type: ApplicationFiled: February 20, 2004Publication date: March 3, 2005Inventors: KianSoon Yeo, JiaHong Shu, JackMing Teng, KiangKeong Ooi
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Publication number: 20040264036Abstract: Methods relating to compensating a pre-defined seek profile for use in a data storage device, such as a disc drive, to manage the internal temperature of the device are disclosed. One embodiment disclosed is related to determining a seek profile compensation value that can be used to compensate the pre-defined seek profile for temperature. Another embodiment is a method of using a seek profile compensation value during device operation to maintain the data storage device operating temperature below an operating temperature threshold. Yet another embodiment of the present invention may be thought of as a controller for a data storage device. The controller comprises a microprocessor having a pre-determined seek profile and a means for compensating the pre-determined seek profile based on a current operating temperature.Type: ApplicationFiled: June 27, 2003Publication date: December 30, 2004Applicant: Seagate Technology LLCInventors: Mingzhong Ding, KianSoon Yeo, JianYi Wang, KianKeong Ooi, BengWee Quak