Patents by Inventor Ju-wha Jin
Ju-wha Jin 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: 7480220Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.Type: GrantFiled: January 26, 2007Date of Patent: January 20, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Patent number: 7317671Abstract: An apparatus and a method of playing an optical recording medium, including a method of compensating for a tilt by a real time tilt detection before and during a playing operation of the optical recording medium. A tilt compensating apparatus includes an optical pickup, a tilt adjuster which adjust a tilt of the optical pickup, a jitter detector which detects a jittering amount of a playing signal generated from the optical pickup, and a tilt controller which controls operations of the tilt adjuster so as to have the jittering amount become minimum by comparing the jittering amount detected before a reproduction of a content of the optical recording medium with a first jittering reference value, and comparing the jittering amount detected during the reproducing of the optical recording medium, per a certain period, with a second reference value. Since the reproduction of the optical recording medium is performed after a tilt compensation, it takes a shorter time to start the reproduction operation.Type: GrantFiled: November 20, 2002Date of Patent: January 8, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Patent number: 7283437Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.Type: GrantFiled: May 16, 2003Date of Patent: October 16, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Patent number: 7272090Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.Type: GrantFiled: April 11, 2006Date of Patent: September 18, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Soo-yul Jung, Ju-wha Jin
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Publication number: 20070121455Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.Type: ApplicationFiled: January 26, 2007Publication date: May 31, 2007Applicant: SAMSUNG ELETRONICS CO., LTD.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Patent number: 7065020Abstract: A method for compensating for tilt in reproducing an optical reproducing medium is performed by determining an initial tilt driving direction so as to not interrupt a reproducer when tilt compensation is performed on the optical recording medium. The tilt compensation method involves comparing the amount of jitter detected over a certain period of time when the optical recording medium is reproduced with a reference value; determining the direction of tilt compensation in the direction of reproducing a track of the optical recording medium, before performing tilt compensation, when the amount of jitter detected, according to a comparison result of the comparator, exceeds a reference value; and resuming reproduction of the optical recording medium after performing tilt compensation so that the jitter decreases in the direction of the determined tilt compensation.Type: GrantFiled: February 26, 2003Date of Patent: June 20, 2006Assignee: Samsung Electronics Co., Ltd.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Publication number: 20040017754Abstract: A tilt adjusting method and apparatus use jitter feedback. The tilt adjusting apparatus includes a jitter detection unit, which detects the jitter quantity of a reproduction signal picked up by a pickup unit, a jitter data preprocessing unit, which filters the jitter quantity in a predetermined window interval unit and obtains a value of an objective function from the filtered jitter data in each predetermined time unit, and a tilt control unit, which obtains a tilt adjusting value by performing tilt control using the value of the objective function and feeds the obtained tilt adjusting value back to a tilt driving unit. According to the tilt-adjusting method and apparatus, when data on an optical disc with a tilt defect is reproduced, quantified jitter values being fed back are adjusted.Type: ApplicationFiled: April 14, 2003Publication date: January 29, 2004Applicant: SAMSUNG Electronics Co., Ltd.Inventors: Ju-Wha Jin, Soo-Yul Jung, Dong-Ki Hong, Jee-Hyung Park
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Publication number: 20030227845Abstract: A tilt compensating device and method of performing normal tilt compensation in the event of a servo emergency which may occur during reproduction of data from an optical recording medium are provided. The tilt compensating device includes: an optical pickup; a tilt adjusting unit that adjusts a tilt angle of the optical pickup; a jitter detecting unit that detects an amount of jitter in a reproduction signal output from the optical pickup; and a controlling unit that monitors speed at which the optical recording medium operates using a phase-locked loop (PLL) signal generated from the reproduction signal and the degree of focus of the optical pickup, performs an operation to return to a normal state if any abnormality occurs, and controls operation of the tilt adjusting unit by comparing an amount of jitter detected at regular intervals against a reference.Type: ApplicationFiled: May 16, 2003Publication date: December 11, 2003Applicant: Samsung Electronics Ltd Co.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Publication number: 20030223336Abstract: A method for compensating for tilt in reproducing an optical reproducing medium is performed by determining an initial tilt driving direction so as to not interrupt a reproducer when tilt compensation is performed on the optical recording medium. The tilt compensation method involves comparing the amount of jitter detected over a certain period of time when the optical recording medium is reproduced with a reference value; determining the direction of tilt compensation in the direction of reproducing a track of the optical recording medium, before performing tilt compensation, when the amount of jitter detected, according to a comparison result of the comparator, exceeds a reference value; and resuming reproduction of the optical recording medium after performing tilt compensation so that the jitter decreases in the direction of the determined tilt compensation.Type: ApplicationFiled: February 26, 2003Publication date: December 4, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Jee-hyung Park, Dong-ki Hong, Soo-yul Jung, Ju-wha Jin
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Publication number: 20030210628Abstract: An apparatus and a method of playing an optical recording medium, including a method of compensating for a tilt by a real time tilt detection before and during a playing operation of the optical recording medium. A tilt compensating apparatus includes an optical pickup, a tilt adjuster which adjust a tilt of the optical pickup, a jitter detector which detects a jittering amount of a playing signal generated from the optical pickup, and a tilt controller which controls operations of the tilt adjuster so as to have the jittering amount become minimum by comparing the jittering amount detected before a reproduction of a content of the optical recording medium with a first jittering reference value, and comparing the jittering amount detected during the reproducing of the optical recording medium, per a certain period, with a second reference value. Since the reproduction of the optical recording medium is performed after a tilt compensation, it takes a shorter time to start the reproduction operation.Type: ApplicationFiled: November 20, 2002Publication date: November 13, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Jee-Hyung Park, Dong-Ki Hong, Soo-Yul Jung, Ju-Wha Jin