Patents by Inventor Jae-hoon Cho
Jae-hoon Cho 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: 8773772Abstract: A lens optical system includes first, second, third, and fourth lenses that are arranged between an object and an image sensor, in order from an object side, wherein the first lens has positive refractive power and an incident surface that is convex toward the object, the second lens has negative refractive power and both surfaces of which are concave, the third lens has positive refractive power and a meniscus shape that is convex toward the image sensor, and the fourth lens has negative refractive power and at least one of an incident surface and an exit surface of which is an aspherical surface, wherein the system satisfies the inequality, 3.0<TTL/BL<3.4, wherein TTL is a distance from the incident surface of the first lens to the image sensor and BL is a distance from the exit surface of the fourth lens to the image sensor.Type: GrantFiled: August 17, 2012Date of Patent: July 8, 2014Assignee: Kolen Co., Ltd.Inventors: Chi Ho An, Pil Sun Jung, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang
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Publication number: 20140184877Abstract: An imaging lens system includes, sequentially from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a third lens having a negative refractive power, wherein a viewing angle ? satisfies following condition, 0.3<|tan ?|<0.8.Type: ApplicationFiled: October 30, 2013Publication date: July 3, 2014Applicant: KOLEN CO., LTD.Inventors: Chi Ho Ahn, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang, Se Jin Kim
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Publication number: 20140184895Abstract: First, second, third, and fourth lenses (in order from an object side) are arranged between the object and an image sensor where an image of the object is formed. The first lens may have a positive refractive power and both surfaces thereof may be convex. The second lens may have a negative refractive power and both surfaces thereof may be concave. The third lens may have a positive refractive power and have a meniscus shape that is convex toward the image sensor. The fourth lens may have a negative refractive power and at least one of an incident surface and an exit surface thereof may be an aspherical surface. A sagittal depth SAG1 of an incident surface of the second lens along an optical axis and a sagittal depth SAG2 of an exit surface of the second lens along the optical axis may satisfy Inequality |SAG1|>|SAG2|.Type: ApplicationFiled: December 31, 2013Publication date: July 3, 2014Applicant: KOLEN CO., LTDInventors: Chi Ho Ahn, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang, Se Jin Kim
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Publication number: 20140184875Abstract: An imaging lens system includes, sequentially from an object side to an image side: a first lens having a positive refractive power; a second lens having a negative refractive power; and a third lens having a positive refractive power or a negative refractive power, wherein a viewing angle ? satisfies following condition,Type: ApplicationFiled: October 31, 2013Publication date: July 3, 2014Applicant: KOLEN CO., LTD.Inventors: Chi Ho Ahn, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang, Se Jin Kim
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Publication number: 20140184880Abstract: First, second, third, and fourth lenses (in order from an object side) are arranged between the object and an image sensor where an image of the object is formed. The first lens may have a positive refractive power and may be a meniscus lens that is convex toward the object. The second lens may have a positive refractive power and may be a meniscus lens that is convex toward the image sensor. The third lens may have a positive refractive power and may be a meniscus lens that is convex toward the image sensor. At least one of an incident surface and an exit surface of the fourth lens may be an aspherical surface. The fourth lens may have a negative refractive power or a positive refractive power. A viewing angle ? of the lens optical system may satisfy a conditional expression, 2.5<|tan ?|<3.5.Type: ApplicationFiled: December 31, 2013Publication date: July 3, 2014Applicant: KOLEN CO., LTD.Inventors: Chi Ho Ahn, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang, Se Jin Kim
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Patent number: 8736985Abstract: A lens optical system includes first to fourth lenses that are sequentially arranged from an object, and which are between the object and an image sensor on which an image of the object is formed. The first lens has a positive refractive power and an incident surface that is convex toward the object. The second lens has a negative refractive power and both surfaces that are concave. The third lens has a positive refractive power and has a meniscus shape that is convex toward the image sensor. The fourth lens has a negative refractive power and at least one of an incident surface and an exit surface thereof is an aspherical surface. The lens optical system may satisfy an inequality that 0.5<|tan ?|/f<1.5, where “?” denotes an angle of view of the lens optical system and “f” denotes a focal length of the lens optical system.Type: GrantFiled: June 29, 2011Date of Patent: May 27, 2014Assignee: Kolen Co., Ltd.Inventor: Jae Hoon Cho
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Publication number: 20140063596Abstract: A lens optical system including first, second, third, fourth, and fifth lenses sequentially arranged between an object and an image sensor on which an image of the object is formed, in order from a side of the object. The first lens has a positive (+) refractive power and is biconvex. The second lens has a negative (?) refractive power and a meniscus shape convex toward the object. The third lens has a negative (?) refractive power. The fourth lens has a positive (+) refractive power and a meniscus shape convex toward the image sensor. The fifth lens has a negative (?) refractive power, and at least one of an incident surface and an exit surface of the fifth lens is an aspherical surface. A focal length f1 of the first lens and a total length TL of the lens optical system satisfies inequality: 0.5<f1/TL<1.0.Type: ApplicationFiled: September 5, 2012Publication date: March 6, 2014Inventors: Pil Sun Jung, Hyoung Bae Park, Chi Ho An, Jae Hoon Cho, Ji Eun Kim
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Publication number: 20140063625Abstract: Provided are a lens assembly and an optical system including the same. The lens assembly may include a first lens having a groove region, a second lens having an insertion region that is inserted into the groove region, and a light blocking member between the first lens and the second lens. The light blocking member may be disposed between a first surface portion of the first lens and a second surface portion of the second lens, and the light blocking member may be separated from at least one of the first surface portion and the second surface portion. The lens assembly may further include at least one additional lens. The lens assembly may be applied to various optical systems.Type: ApplicationFiled: September 4, 2013Publication date: March 6, 2014Applicant: Kolen Co., Ltd.Inventors: Ji Eun Kim, Pil Sun Jung, Chi Ho Ahn, Jae Hoon Cho, Yang Hee Han
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Publication number: 20140063620Abstract: A lens optical system including first, second, third, fourth, and fifth lenses that are sequentially arranged between an object and an image sensor on which an image of the object is formed. The first lens may have a positive refractive power and may be biconvex. The second lens may have a negative refractive power and may have a meniscus shape that is convex toward the object. The third lens may have a positive refractive power. The fourth lens may have a positive refractive power and may have a meniscus shape that is convex toward the image sensor. The fifth lens may have a negative refractive power, and at least one of an incident surface and an exit surface of the fifth lens may be an aspherical surface.Type: ApplicationFiled: September 5, 2012Publication date: March 6, 2014Inventors: Pil Sun Jung, Hyoung Bae Park, Chi Ho An, Jae Hoon Cho, Ji Eun Kim
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Publication number: 20140043698Abstract: In a lens optical system having first, second, and third lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, the first lens has a positive (+) refractive power and is convex toward the object, the second lens has a negative (?) refractive power and is convex toward the image sensor, and the third lens has a positive (+) refractive power and at least one of an incident surface and an exit surface of the third lens has at least one inflection point between a center portion and an edge thereof. The lens optical system satisfies the following inequality that 0.5<f1/f<0.8, in which f1 is a focal length of the first lens and f is a total focal length of the lens optical system.Type: ApplicationFiled: August 8, 2012Publication date: February 13, 2014Inventors: Pil Sun Jung, Hyong Bae PARK, Chi Ho AN, Jae Hoon CHO, Ji Eun KIM
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Publication number: 20130265652Abstract: A lens optical system includes first, second, third, and fourth lenses that are arranged between an object and an image sensor, in order from an object side, wherein the first lens has positive refractive power and an incident surface that is convex toward the object, the second lens has negative refractive power and both surfaces of which are concave, the third lens has positive refractive power and a meniscus shape that is convex toward the image sensor, and the fourth lens has negative refractive power and at least one of an incident surface and an exit surface of which is an aspherical surface, wherein the system satisfies the inequality, 3.0<TTL/BL<3.4, wherein TTL is a distance from the incident surface of the first lens to the image sensor and BL is a distance from the exit surface of the fourth lens to the image sensor.Type: ApplicationFiled: August 17, 2012Publication date: October 10, 2013Inventors: Chi Ho An, Pil Sun Jung, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang
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Publication number: 20130242411Abstract: A lens optical system includes first, second, third, fourth, and fifth lenses that are arranged between an object and an image sensor where an image of the object is formed, in order from an object side, wherein the first lens has a positive (+) refractive power and an incident surface that is convex toward the object, the second lens has a negative (?) refractive power and a meniscus shape that is convex toward the object, the third lens has a positive (+) refractive power and both convex surfaces, the fourth lens has a positive (+) refractive power and a meniscus shape that is convex toward the image sensor, and the fifth lens has a negative (?) refractive power and an incident surface and an exit surface, at least one of the incident surface and the exit surface is an aspherical surface.Type: ApplicationFiled: August 17, 2012Publication date: September 19, 2013Inventors: Chi Ho An, Pil Sun Jung, Jae Hoon Cho, Ji Eun Kim, Chan Goo Kang
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Patent number: 8520325Abstract: A photographic lens optical system including: a first lens, a second lens, and a third lens sequentially arranged from a side of an object toward an image sensor, wherein the first lens has a positive (+) refractive power and an incident surface that is convex toward the object, the second lens has a negative (?) refractive power and is convex toward the image sensor, the third lens has a negative (?) refractive power, and at least one of an incident surface and an exit surface thereof is aspherical, and wherein an angle of view (?) of the lens optical system, and a focal length (f) of the lens optical system satisfy the following inequality: 1.0<|tan ?|/f<2.0.Type: GrantFiled: June 16, 2011Date of Patent: August 27, 2013Assignee: Kolen Co., Ltd.Inventors: Hyong Bae Park, Chi Ho An, Jae Hoon Cho
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Publication number: 20120002302Abstract: A lens optical system includes first to fourth lenses that are sequentially arranged from an object, and which are between the object and an image sensor on which an image of the object is formed. The first lens has a positive refractive power and an incident surface that is convex toward the object. The second lens has a negative refractive power and both surfaces that are concave. The third lens has a positive refractive power and has a meniscus shape that is convex toward the image sensor. The fourth lens has a negative refractive power and at least one of an incident surface and an exit surface thereof is an aspherical surface. The lens optical system may satisfy an inequality that 0.5<|tan ?|/f<1.5, where “?” denotes an angle of view of the lens optical system and “f” denotes a focal length of the lens optical system.Type: ApplicationFiled: June 29, 2011Publication date: January 5, 2012Inventor: Jae Hoon Cho
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Publication number: 20110320088Abstract: The present invention features a system and method for displaying a power status of a hybrid vehicle, which can provide more extensive and detailed information such as a power status of a motor and an engine, a battery charge/discharge status, an operational status of an engine brake, etc. during running of the hybrid vehicle. In embodiments of the present invention, the power ratio of the motor and the engine is displayed using a bar graph including a bar and a separator. In further embodiments, the status information of the motor and the engine, such as a battery charge/discharge status by a motor, an operational status of an engine brake, etc., is displayed in different colors, thereby allowing a driver to visually and easily recognize the displayed information.Type: ApplicationFiled: November 18, 2010Publication date: December 29, 2011Applicants: Kia Motors Corporation, Hyundai Motor CompanyInventors: Ki Tae Eom, Jae Hoon Cho, Teh Hwan Cho
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Publication number: 20110310493Abstract: A photographic lens optical system including: a first lens, a second lens, and a third lens sequentially arranged from a side of an object toward an image sensor, wherein the first lens has a positive (+) refractive power and an incident surface that is convex toward the object, the second lens has a negative (?) refractive power and is convex toward the image sensor, the third lens has a negative (?) refractive power, and at least one of an incident surface and an exit surface thereof is aspherical, and wherein an angle of view (?) of the lens optical system, and a focal length (f) of the lens optical system satisfy the following inequality: 1.0<|tan ?|/f<2.0.Type: ApplicationFiled: June 16, 2011Publication date: December 22, 2011Inventors: Hyong Bae Park, Chi Ho An, Jae Hoon Cho
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Patent number: 7656948Abstract: A transcoding system and method effectively synchronize segmentation metadata with A/V content when converting an MPEG stream to another format stream using a segment browser. The transcoding system includes a timing synchronizer, which adjusts the timing parameters so that the video data can be synchronized with segmentation metadata even after the transcoding process, a transcoding condition determiner, which determines transcoding conditions suitable for an end user environment, and an encoder, which compresses a video sequence reconstructed from the video data according to the transcoding conditions determined by the transcoding condition determiner and records a presentation time stamp, which is one of the adjusted timing parameters, in the compressed video sequence.Type: GrantFiled: February 10, 2005Date of Patent: February 2, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Yeong-kyeong Seong, Hyo-seop Shin, In-sun Kang, Gil-more Koo, Hye-soo Lee, Jae-hoon Cho
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Patent number: 7649817Abstract: A method and an apparatus for recording and/or reproducing data in which a recording and/or reproduction velocity is be reduced when a data recording and/or reproduction error occurs due to a defect of an optical disc during recording of data on and/or reproduction of data from the optical disc. The method includes: recording data on an optical disc that is rotating at a predetermined constant angular velocity; determining whether a data recording error occurs; and if it is determined that a data recording error has occurred, recording data on the optical disc that is rotating at a constant angular velocity which is lower than the predetermined constant angular velocity.Type: GrantFiled: March 12, 2004Date of Patent: January 19, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-yeob Choo, Jae-hoon Cho
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Publication number: 20050190872Abstract: A transcoding system and method effectively synchronize segmentation metadata with A/V content when converting an MPEG stream to another format stream using a segment browser. The transcoding system includes a timing synchronizer, which adjusts the timing parameters so that the video data can be synchronized with segmentation metadata even after the transcoding process, a transcoding condition determiner, which determines transcoding conditions suitable for an end user environment, and an encoder, which compresses a video sequence reconstructed from the video data according to the transcoding conditions determined by the transcoding condition determiner and records a presentation time stamp, which is one of the adjusted timing parameters, in the compressed video sequence.Type: ApplicationFiled: February 10, 2005Publication date: September 1, 2005Inventors: Yeong-kyeong Seong, Hyo-seop Shin, In-sun Kang, Gil-more Koo, Hye-soo Lee, Jae-hoon Cho
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Publication number: 20040179443Abstract: A method and an apparatus for recording and/or reproducing data in which a recording and/or reproduction velocity is be reduced when a data recording and/or reproduction error occurs due to a defect of an optical disc during recording of data on and/or reproduction of data from the optical disc. The method includes: recording data on an optical disc that is rotating at a predetermined constant angular velocity; determining whether a data recording error occurs; and if it is determined that a data recording error has occurred, recording data on the optical disc that is rotating at a constant angular velocity which is lower than the predetermined constant angular velocity.Type: ApplicationFiled: March 12, 2004Publication date: September 16, 2004Applicant: Samsung Electronics Co., Ltd.Inventors: Chang-yeob Choo, Jae-hoon Cho