Patents by Inventor Jin-kyung Lee
Jin-kyung Lee 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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Publication number: 20090190453Abstract: In a near-field optical recording/reproducing system and a method of controlling a tilt, the near-field optical recording/reproducing system includes: a light source; an objective lens to focus light emitted from the light source to transmit near-field light to an information storage medium; a PD (photodetector) to receive a portion of the light that is transmitted from the objective lens to the information storage medium and is reflected from the information storage medium, to detect a GES (gap error signal) used for controlling an air gap formed between the objective lens and the information storage medium; a signal processor/determiner to obtain an edge voltage using the GES detected by the PD and determine a tilt control point using the edge voltage; and an adjuster to control a relative tilt between the objective lens and the information storage medium in the tilt control position.Type: ApplicationFiled: November 10, 2008Publication date: July 30, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Jin-kyung LEE, An-sik JEONG, Jong-hyun SHIN, Kyung-geun LEE
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Publication number: 20090059752Abstract: An optical disc apparatus, and a method of driving the same, includes a light focusing element disposed to focus light emitted from a light source onto a disc; an actuator to move the light focusing element toward or away from the disc according to a voltage applied to the actuator; a light intensity detection unit to detect the intensity of light reflected from the disc ; a servo unit to generate a gap error signal and a third voltage, the third voltage being the sum of a first voltage and a second voltage, and to apply the generated third voltage to the actuator; and a control unit to control the servo unit to perform a gap pull-in operation when the light focusing element is moved toward the disc according to the gap error signal and the third voltage.Type: ApplicationFiled: February 25, 2008Publication date: March 5, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: An-sik JEONG, Joon Jeong, Joong-gon Kim, Hyun-seok Yang, Chong-sam Chung, Noh-cheol Park, Kyung-geun Lee, Jin-kyung Lee, Jong-hyun Shin
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Publication number: 20090040906Abstract: A solid immersion lens (SIL) near-field system including: a radially polarized beam generator to generate a radially polarized beam; an SIL; an objective lens to focus the radially polarized beam on a bottom surface of the SIL; and a mask to shield a center portion of the radially polarized beam, the center portion being about an optical axis of the radially polarized beam.Type: ApplicationFiled: February 19, 2008Publication date: February 12, 2009Applicant: Samsung Electronics Co., Ltd.Inventors: Tao Hong, Tae-Kyung Kim, Jin-Kyung Lee
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Publication number: 20090016179Abstract: A near-field optical disk apparatus, which can perform stable focus pull-in even when overshoot occurs, and a focus pull-in method, of which the method includes: raising an actuator, and monitoring and determining whether light focused on a disk is near-field light; holding or storing a driving voltage of the actuator if the light focused on the disk is the near-field light; raising the actuator, and determining a maximum driving voltage of the actuator; and performing focus pull-in while lowering the actuator in an interval where a driving voltage of the actuator is between the maximum driving voltage and the held or stored driving voltage.Type: ApplicationFiled: December 20, 2007Publication date: January 15, 2009Applicant: Samsung Electronics Co.,Ltd.Inventors: An-sik Jeong, Jong-hyun Shin, Jin-kyung Lee
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Patent number: 7324424Abstract: A compatible optical pickup includes an optical disc, an objective lens, a diffractive device, and a divergent lens. The optical unit emits a short wavelength light beam corresponding to a high density optical disc and a long wavelength light beam corresponding to a low density optical disc. The objective lens forms a light spot on the high density optical disc and the low density optical disc and the diffractive device diffracts the short wavelength light beam to correct chromatism according to a change in a wavelength of the short wavelength light beam. The divergent lens refracts the long wavelength light beam toward the objective lens to increase a working distance with respect to the low density optical disc.Type: GrantFiled: November 15, 2002Date of Patent: January 29, 2008Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Chong-sam Chung, Hae-jung Suh, Jin-kyung Lee, Jong-bae Kim
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Patent number: 7266074Abstract: An optical disc apparatus and a wobble signal detection method in which a light beam projected onto an optical disc and reflected by the optical disc is divided into at least four light regions in the direction corresponding to the radial direction of the optical disc to detect the light regions, and a wobble signal is detected by performing a subtraction on first and second difference signals, the first difference signal obtained by performing a subtraction on detection signals for the inner light regions of the divided and/or detected light beam and the second difference signal obtained by performing a subtraction on detection signals for the outer light regions of the divided and/or detected light beam.Type: GrantFiled: June 28, 2002Date of Patent: September 4, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Jong-bae Kim, Jin-kyung Lee, Chong-sam Chung
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Patent number: 7180846Abstract: A compatible optical pickup for recording and/or reproducing information on/from multiple kinds of optical discs having different thicknesses by selectively using source lights of respective different wavelengths corresponding to a kind of disc and using a common objective lens. At least one phase compensator, which compensates a phase of a light having a particular wavelength to correct for spherical aberration due to a thickness difference between the kinds of optical discs and/or chromatic aberration due to a wavelength difference between the required source lights, is positioned between the source lights and an entrance pupil of the objective lens. Each phase compensator compensates light of at least one wavelength and passes light of at least one other wavelength without significant relative phase alteration. By using two phase compensators, the optical pickup may be made compatible with at least three kinds of optical discs.Type: GrantFiled: October 31, 2002Date of Patent: February 20, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Hae-jung Suh, Jin-kyung Lee, Jong-bae Kim, Chong-sam Chung
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Publication number: 20060221803Abstract: A hybrid disk useable with a recording and or reproducible apparatus having an optical pickup. The hybrid disk includes a first recording layer having a first format on which data is recordable or readable by a first format beam and a second recording layer having a second format on which the data is recordable or readable by a second format beam. The transmivities and reflectivities of the first and second recording layers are interrelated to control relative intensities of the first and second format beams incident on the optical pickup.Type: ApplicationFiled: March 29, 2006Publication date: October 5, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Young-min Cheong, Jung-wan Ko, Jin-kyung Lee
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Publication number: 20060002281Abstract: A data reproducing method reproducing data recorded in a super resolution information storage medium in a form of marks having magnitudes less than a resolving power of an incident light beam, and an apparatus thereof. The data reproducing method includes irradiating a first beam having a resolving power causing a super resolution phenomenon and a second beam having a resolving power not causing a super resolution phenomenon into different places on the information storage medium, detecting a first reproduction signal based on the first beam and a second reproduction signal based on the second beam, and compensating for and calculating a temporal delay between the first reproduction signal and the second reproduction signal. Therefore, a signal reflected from a peripheral area of a reproduction beam spot other than a super resolution area can be excluded, thereby improving reproduction signal characteristics.Type: ApplicationFiled: June 29, 2005Publication date: January 5, 2006Applicant: Samsung Electronics Co., Ltd.Inventors: Jin-kyung Lee, Joo-ho Kim, Chong-sam Chung, In-oh Hwang, Kiu-hae Jung, Hyun-ki Kim
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Patent number: 6847499Abstract: An optical head includes a substrate, a laser diode, a photodetector, an objective lens, a prism, and an optical element. The laser diode is installed on the substrate and emits light. The photodetector is installed on the substrate and receives the light. The objective lens is installed on a first side of the substrate and focuses the light emitted from the laser diode onto a recording surface of a disc. The prism is installed on a second side of the substrate, transmits the light emitted from the laser diode toward the objective lens, and transmits the light reflected from the recording surface toward the photodetector. The optical element adjusts an optical path formed between the substrate and the prism.Type: GrantFiled: June 13, 2003Date of Patent: January 25, 2005Assignee: Samsung Electronics Co., Ltd.Inventors: Jong-chul Choi, Jin-kyung Lee, Chong-sam Chung, Tae-kyung Kim, Kwang Kim, Jin-won Lee
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Patent number: 6807144Abstract: An optical recording medium having groove tracks and land tracks, first wobbles formed along both sidewalls of each of the groove tracks, second wobbles formed along both sidewalls of each of the land tracks and which are independent of the formation of the first wobble. A middle portion is formed at a predetermined position on each of the sidewalls between adjacent pairs of the land and groove tracks. This optical recording medium can significantly reduce the non-recordable area as compared to conventional optical recording media, resulting in a great improvement in recording density.Type: GrantFiled: May 30, 2002Date of Patent: October 19, 2004Assignee: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Chong-sam Chung, Jin-kyung Lee, Jong-bae Kim, Du-seop Yoon
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Publication number: 20040174621Abstract: An optical head includes a substrate, a laser diode, a photodetector, an objective lens, a prism, and an optical element. The laser diode is installed on the substrate and emits light. The photodetector is installed on the substrate and receives the light. The objective lens is installed on a first side of the substrate and focuses the light emitted from the laser diode onto a recording surface of a disc. The prism is installed on a second side of the substrate, transmits the light emitted from the laser diode toward the objective lens, and transmits the light reflected from the recording surface toward the photodetector. The optical element adjusts an optical path formed between the substrate and the prism.Type: ApplicationFiled: June 13, 2003Publication date: September 9, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Jong-Chul Choi, Jin-kyung Lee, Chong-sam Chung, Tae-kyung Kim, Kwang Kim, Jin-won Lee
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Publication number: 20030107979Abstract: A compatible optical pickup includes an optical disc, an objective lens, a diffractive device, and a divergent lens. The optical unit emits a short wavelength light beam corresponding to a high density optical disc and a long wavelength light beam corresponding to a low density optical disc. The objective lens forms a light spot on the high density optical disc and the low density optical disc and the diffractive device diffracts the short wavelength light beam to correct chromatism according to a change in a wavelength of the short wavelength light beam. The divergent lens refracts the long wavelength light beam toward the objective lens to increase a working distance with respect to the low density optical disc.Type: ApplicationFiled: November 15, 2002Publication date: June 12, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Chong-sam Chung, Hae-jung Suh, Jin-kyung Lee, Jong-bae Kim
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Publication number: 20030095334Abstract: A compatible optical pickup for recording and/or reproducing information on/from multiple kinds of optical discs having different thicknesses by selectively using source lights of respective different wavelengths corresponding to a kind of disc and using a common objective lens. At least one phase compensator, which compensates a phase of a light having a particular wavelength to correct for spherical aberration due to a thickness difference between the kinds of optical discs and/or chromatic aberration due to a wavelength difference between the required source lights, is positioned between the source lights and an entrance pupil of the objective lens. Each phase compensator compensates light of at least one wavelength and passes light of at least one other wavelength without significant relative phase alteration. By using two phase compensators, the optical pickup may be made compatible with at least three kinds of optical discs.Type: ApplicationFiled: October 31, 2002Publication date: May 22, 2003Applicant: Samsung Electronics Co., LtdInventors: Tae-kyung Kim, Young-man Ahn, Hae-jung Suh, Jin-kyung Lee, Jong-bae Kim, Chong-sam Chung
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Publication number: 20030021217Abstract: An optical disc apparatus and a wobble signal detection method in which a light beam projected onto an optical disc and reflected by the optical disc is divided into at least four light regions in the direction corresponding to the radial direction of the optical disc to detect the light regions, and a wobble signal is detected by performing a subtraction on first and second difference signals, the first difference signal obtained by performing a subtraction on detection signals for the inner light regions of the divided and/or detected light beam and the second difference signal obtained by performing a subtraction on detection signals for the outer light regions of the divided and/or detected light beam.Type: ApplicationFiled: June 28, 2002Publication date: January 30, 2003Applicant: Samsung Electronics Co., Ltd.Inventors: Tae-kyung Kim, Young-man Ahn, Jong-bae Kim, Jin-kyung Lee, Chong-sam Chung
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Publication number: 20030002430Abstract: An optical recording medium having groove tracks and land tracks, first wobbles formed along both sidewalls of each of the groove tracks, second wobbles formed along both sidewalls of each of the land tracks and which are independent of the formation of the first wobble. A middle portion is formed at a predetermined position on each of the sidewalls between adjacent pairs of the land and groove tracks. This optical recording medium can significantly reduce the non-recordable area as compared to conventional optical recording media, resulting in a great improvement in recording density.Type: ApplicationFiled: May 30, 2002Publication date: January 2, 2003Inventors: Tae-kyung Kim, Young-man Ahn, Chong-sam Chung, Jin-kyung Lee, Jong-bae Kim, Du-seop Yoon