Patents by Inventor Chang Yong Jang
Chang Yong Jang 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: 7869834Abstract: A mobile terminal including a first body having a first surface and a second surface and a second body having a first surface and a second surface. In addition, the first body includes a first display located at the first surface and configured to display at least one icon, the at least one icon being selectable by touching the first display where the icon is displayed, a second display located at the second surface and configured to display information, and a receiver located in the first body and configured to transmit sound through the first surface. The second body includes an input device located at the first surface thereof to input information and is rotatably connected to the first body such that the first body can be rotated from a first state to a second state.Type: GrantFiled: October 25, 2007Date of Patent: January 11, 2011Assignee: LG Electronics Inc.Inventors: Won-Seok Seol, Min-Soo Kim, Byoung-Wook Kim, Chang-Yong Jang, Ho-Myoung Shin
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Patent number: 7854602Abstract: A rotary compressor for changing a compression capacity of the compressor includes a driving shaft being rotatable clockwise and counterclockwise, and having an eccentric portion of a predetermined size; a cylinder forming a predetermined inner volume; a roller installed rotatably on an outer circumference of the eccentric portion so as to contact an inner circumference of the cylinder; a vane installed elastically in the cylinder to contact the roller continuously; a first bearing installed in the cylinder, for rotatably supporting the driving shaft; a second bearing installed in the cylinder, for rotatably supporting the driving shaft and guiding the fluid into the fluid chamber; discharge ports communicating with the fluid chamber; and a valve assembly having openings separated by a predetermined angle from each other, the valve assembly having a center which is eccentrically installed by a predetermined distance from a center of the cylinder.Type: GrantFiled: April 27, 2004Date of Patent: December 21, 2010Assignee: LG Electronics Inc.Inventors: Ji Young Bae, Chul Gi Roh, Kyoung Jun Park, Chang Yong Jang, Jong Bong Kim, Young Hwan Ko
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Patent number: 7816873Abstract: The present invention discloses an apparatus and method for controlling a linear compressor which can actively handle load and efficiently perform an operation, by synchronizing an operation frequency with a natural frequency of a movable member varied by the load.Type: GrantFiled: August 30, 2004Date of Patent: October 19, 2010Assignee: LG Electronics Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20100035669Abstract: A mobile terminal is provided. The mobile terminal includes an upper body, a lower body, and a slide module connecting the upper and lower bodies, where the slide module is configured to slidably move the upper body in a first linear motion relative to the lower body and to tilt the upper body at an angle relative to the lower body in a second motion. The slide module includes an upper slide member fixed to the upper body, a lower slide member fixed to the lower body, and at least one cam portion formed on the upper slide member such that the at least one cam portion is configured to contact the lower slide member when the upper slide member is moved toward an open configuration using the first motion, wherein the contact causes the upper slide member to tilt when the upper slide member is moved to the open configuration using the second motion.Type: ApplicationFiled: July 22, 2009Publication date: February 11, 2010Inventors: Chang-Yong Jang, Min-Soo Kim
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Publication number: 20100004027Abstract: A slide type mobile terminal having a first body and a second body is provided. The first body includes a display and a first slide member. The second body includes a key pad and is slidably coupled to the first body. The second body includes a second slide member to slidably engage the corresponding first slide member of the first body to allow movement of the first body and the second body to enable one of closed or tilted configurations. One of the first and second slide members has a curvature along at least one end such that when the first body is extended from the second body, the first body is tilted at a predetermined angle with respect to the second body. The first body receives a portion of the second body and the second body receives a portion of the first body in the closed position.Type: ApplicationFiled: February 26, 2009Publication date: January 7, 2010Inventors: Chang-Yong JANG, Choong-Hyoun CHO, Won-Seok JOO
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Publication number: 20090316354Abstract: An open/close mechanism of a portable terminal is provided. The portable terminal is configured such that when applying a force to an upper body in a horizontal direction with respect to a lower body, a slide-slip module allows the upper body subsequently to slide in the horizontal direction and slip in a longitudinal thickness direction with respect to the lower body so as to implement an open state, whereby a step generation between an upper surface of the upper body and an upper surface of the lower body can be minimized, so as to achieve a structurally stable portable terminal.Type: ApplicationFiled: December 12, 2008Publication date: December 24, 2009Inventor: Chang-Yong JANG
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Publication number: 20090286573Abstract: A portable terminal is provided where the portable terminal has an upper body including an upper surface and a lower surface, a lower body having an upper surface, the upper body being slidably connected to the lower body for movement between a closed position and an open position to expose a portion of the upper surface of the second body, and a first moving unit connected between the upper body and the lower body, the first moving unit being configured to permit tilting of the upper body with respect to the lower body such that a portion of the lower surface of the upper body is lower than the exposed portion of the upper surface of the second body.Type: ApplicationFiled: September 30, 2008Publication date: November 19, 2009Inventors: Chang-Yong JANG, Won-Seok Joo
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Publication number: 20090286574Abstract: A portable terminal is provided where the portable terminal includes a lower body, an upper body connected to the lower body, the upper body being slidably moveable in a first direction with respect to the lower body between a closed position and an open position, and a first moving unit connected between the upper body and the lower body to move the upper body in a second direction different from the first direction. The first moving unit is configured to move the upper body toward the lower body along the second direction when the upper body is moved from the closed position to the open position and to move the upper body away from the lower body along the second direction when the upper body is moved from the open position to the closed position.Type: ApplicationFiled: September 30, 2008Publication date: November 19, 2009Inventors: Min-Soo KIM, Chang-Yong Jang
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Patent number: 7597547Abstract: A rotary compressor having two different compression capacities is provided. The rotary compressor may include a driving shaft that is rotatable in both a clockwise and counterclockwise direction, and having an eccentric portion at an end thereof. The compressor may also include cylinder having a predetermined inner volume, and a roller rotatably installed on an outer circumferential portion of the eccentric portion so as to contact an inner circumference of the cylinder and form a fluid chamber therebetween. A vane is elastically installed in the cylinder and contacts the roller, and upper and lower bearings are respectively installed at upper and lower portions of the cylinder so as to rotatably support the driving shaft and hermetically seal the inner volume of the cylinder. Suction and discharge ports communicate with the fluid chamber based on a rotational direction of the driving shaft so as to provide a different compression capacity depending on the rotational direction of the driving shaft.Type: GrantFiled: May 3, 2004Date of Patent: October 6, 2009Assignee: LG Electronics Inc.Inventors: Sam Chul Ha, Ji Young Bae, Kyoung Jun Park, Chang Yong Jang, Hyeon Kim
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Publication number: 20090245933Abstract: A mobile terminal including a first body, a second body slidably moveable with respect to the first body such that the first body is moved between a closed position and an open position, a connector electrically connecting the first body to the second body, and a slide module connecting the first body to the second body to allow the second body to move with respect to the first body between the closed position and the open position is provided. The slide module includes a cover unit to prevent exposure of the connector when the first body is in the open position.Type: ApplicationFiled: February 17, 2009Publication date: October 1, 2009Inventor: Chang-Yong Jang
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Publication number: 20090247247Abstract: A mobile terminal including a first body, a second body slidably moveable with respect to the first body such that the first body is moved between a closed position and an open position, a connector electrically connecting the first body to the second body, and a slide module connecting the first body to the second body to allow the second body to move with respect to the first body between the closed position and the open position is provided. The slide module includes a first slide member connected to the first body, a second slide member connected to the second body, the second slide member being slidably connected to the first slide member, and a cover unit disposed between the first and second slide members, the cover unit being configured to prevent exposure of the connector when the first body is in the open position.Type: ApplicationFiled: March 6, 2009Publication date: October 1, 2009Inventor: Chang-Yong Jang
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Publication number: 20090232666Abstract: The present invention discloses a linear compressor in which a piston is driven by a linear motor and linearly reciprocated inside a cylinder to suck, compress and discharge refrigerants. Even though load is varied, the linear compressor performs the operation in a resonance state by estimating a natural frequency of the piston and synchronizing an operation frequency of the linear motor with the natural frequency of the piston, and efficiently handles the load by varying a compression capacity by changing a stroke of the piston.Type: ApplicationFiled: August 30, 2004Publication date: September 17, 2009Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Hyun Kim, Jong-Min Shin, Chang-Yong Jang, Shin-Hyun Park, Young-Hoan Jeon, Chul-Gi Roh
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Patent number: 7588427Abstract: A rotary compressor that has two compression capacities is provided. The rotary compressor includes a driving shaft having an eccentric portion and being rotatable in both clockwise and counterclockwise directions, a cylinder having a predetermined inner volume, and a roller rotatably installed on an outer circumferential surface of the eccentric portion so as to contact an inner circumferential surface of the cylinder. The roller performs a rolling motion along the inner circumferential surface of the cylinder and forms a fluid chamber therewith. A vane is elastically installed in the cylinder, contacting the roller, and upper and lower bearings are respectively installed at upper and lower portions of the cylinder to rotatably support the driving shaft and hermetically seal the inner volume of the cylinder. A compression mechanism forms different sizes of compressive spaces in the fluid chamber based on a rotational direction of the driving shaft.Type: GrantFiled: May 3, 2004Date of Patent: September 15, 2009Assignee: LG Electronics Inc.Inventors: Ji Young Bae, Kyoung Jun Park, Chang Yong Jang, Hyeon Kim
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Publication number: 20090047154Abstract: The present invention discloses a linear compressor which can rapidly overcome load and improve compression efficiency, by synchronizing an operation frequency of a linear motor with a natural frequency of a movable member varied by the load and varying a stroke of the movable member according to the load. The linear compressor includes a fixed member having a compression space inside, a movable member linearly reciprocated in the fixed member in the axial direction, for compressing refrigerants sucked into the compression space, one or more springs installed to elastically support the movable member in the motion direction of the movable member, spring constants of which being varied by load, and a linear motor installed to be connected to the movable member, for linearly reciprocating the movable member in the axial direction, and varying a stroke of the movable member according to a predetermined refrigeration force, so that the movable member can be linearly reciprocated to reach a top dead center.Type: ApplicationFiled: August 30, 2004Publication date: February 19, 2009Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20080261659Abstract: A mobile communication terminal including a first body, a second body slidably connected to the first body and moveable between a first position and a second position, and a slide module connecting the first body to the second body. The slide module is configured to guide the second body along a curved path between the first position and the second position such that the second body moves in both a lateral and longitudinal direction with respect to the first body.Type: ApplicationFiled: October 24, 2007Publication date: October 23, 2008Inventors: Chang-Yong JANG, Yong-Hee LEE, Min-Soo Kim
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Publication number: 20080242359Abstract: A mobile terminal including a first body having a first surface and a second surface and a second body having a first surface and a second surface. In addition, the first body includes a first display located at the first surface and configured to display at least one icon, the at least one icon being selectable by touching the first display where the icon is displayed, a second display located at the second surface and configured to display information, and a receiver located in the first body and configured to transmit sound through the first surface. The second body includes an input device located at the first surface thereof to input information and is rotatably connected to the first body such that the first body can be rotated from a first state to a second state.Type: ApplicationFiled: October 25, 2007Publication date: October 2, 2008Inventors: Won-Seok Seol, Min-Soo Kim, Byoung-Wook Kim, Chang-Yong Jang, Ho-Myoung Shin
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Publication number: 20080213108Abstract: The present invention discloses a linear compressor in which a piston is driven by a linear motor and linearly reciprocated inside a cylinder to suck, compress and discharge refrigerants. The linear compressor synchronizes an operation frequency of the linear motor with a natural frequency of the piston, considering that an elastic force of a mechanical spring and a gas spring which elastically support the piston in the motion direction is varied by load. Even if the load is varied, the linear motor is operated in the resonance state, to maximize efficiency. The linear compressor varies a stroke of the piston according to the load, thereby actively handling and rapidly overcoming the load and reducing power consumption.Type: ApplicationFiled: August 30, 2004Publication date: September 4, 2008Applicant: LG Electronics, Inc.Inventors: Bong-Jun Choi, Chang-Yong Jang, Man-Seok Cho, Shin-Hyun Park, Hyun Kim, Jong-Min Shin, Young-Hoan Jeon, Chul-Gi Roh
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Publication number: 20080200222Abstract: A slide module includes a first slide member configured to slide upwardly and downwardly, a second slide member slidably mounted to the first slide member, an elastic force unit disposed between the first slide member and the second slide member, and having a plurality of elastic members mounted between a first rotation bar and a second rotation bar, wherein an elastic force is generated when the first rotation bar and the second rotation bar are rotated.Type: ApplicationFiled: December 5, 2007Publication date: August 21, 2008Inventors: Chang-Yong Jang, Heui-Il Jeong
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Publication number: 20080131196Abstract: A slide module includes a first slide member configured to slide upwardly and downwardly, a second slide member slidably mounted to the first slide member, and an elastic force unit disposed between the first slide member and the second slide member, and having an elastic member mounted between a first rod and a support member, and between a second rod and the support member, wherein an elastic force is generated when the first slide member is slid upwardly and downwardly with respect to the second slide member.Type: ApplicationFiled: December 5, 2007Publication date: June 5, 2008Inventor: Chang-Yong Jang
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Publication number: 20080107556Abstract: Disclosed is a rotary compressor having two compression capacities according to the two different rotational directions of the driving shaft (300). The rotary compressor includes: a driving shaft (300) with an eccentric portion (310) on which a roller (400) rotates along an inner circumference of the cylinder (100), a vane (110) installed in the cylinder (100) to contact the roller (400) continuously, an upper (210) and one lower (220) bearing respectively disposed on top and bottom of the cylinder (100), a disc shaped valve (820) rotates between two positions and has at least one suction port (710 or 720) for selectively supplying refrigerant inside the compression chamber (100) according to the rotational direction of the driving shaft (300) and at least one discharge port (621 or 611) communicating with the compression chamber (100) for discharging the compressed refrigerant. The refrigerant is supplied through a communication hole (102) to a port (730) formed on the outer valve (810).Type: ApplicationFiled: April 26, 2004Publication date: May 8, 2008Applicant: LG Electronics, Inc.Inventors: Ji Young Bae, Chul Gi Roh, Kyoung Jun Park, Chang Yong Jang, Jong Bong Kim