Patents by Inventor Ji-Soo Park
Ji-Soo Park 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: 8183667Abstract: A device includes an epitaxially grown crystalline material within an area confined by an insulator. A surface of the crystalline material has a reduced roughness. One example includes obtaining a surface with reduced roughness by creating process parameters which result in the dominant growth component of the crystal to be supplied laterally from side walls of the insulator. In a preferred embodiment, the area confined by the insulator is an opening in the insulator having an aspect ratio sufficient to trap defects using an ART technique.Type: GrantFiled: June 2, 2009Date of Patent: May 22, 2012Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventor: Ji-Soo Park
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Patent number: 8173551Abstract: Lattice-mismatched epitaxial films formed proximate non-crystalline sidewalls. Embodiments of the invention include formation of facets that direct dislocations in the films to the sidewalls.Type: GrantFiled: September 7, 2007Date of Patent: May 8, 2012Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.Inventors: Jie Bai, Ji-Soo Park, Anthony J. Lochtefeld
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Publication number: 20120098034Abstract: A device includes an epitaxially grown crystalline material within an area confined by an insulator. A surface of the crystalline material has a reduced roughness. One example includes obtaining a surface with reduced roughness by creating process parameters which result in the dominant growth component of the crystal to be supplied laterally from side walls of the insulator. In a preferred embodiment, the area confined by the insulator is an opening in the insulator having an aspect ratio sufficient to trap defects using an ART technique.Type: ApplicationFiled: January 3, 2012Publication date: April 26, 2012Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventor: Ji-Soo Park
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Publication number: 20120068226Abstract: Methods and structures are provided for formation of devices on substrates including, e.g., lattice-mismatched materials, by the use of aspect ratio trapping and epitaxial layer overgrowth. A method includes forming an opening in a masking layer disposed over a substrate that includes a first semiconductor material. A first layer, which includes a second semiconductor material lattice-mismatched to the first semiconductor material, is formed within the opening. The first layer has a thickness sufficient to extend above a top surface of the masking layer. A second layer, which includes the second semiconductor material, is formed on the first layer and over at least a portion of the masking layer. A vertical growth rate of the first layer is greater than a lateral growth rate of the first layer and a lateral growth rate of the second layer is greater than a vertical growth rate of the second layer.Type: ApplicationFiled: September 23, 2011Publication date: March 22, 2012Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Jennifer Hydrick, Jizhong Li, Zhiyuan Cheng, James G. Fiorenza, Jie Bai, Ji-Soo Park, Anthony Lochtefeld
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Patent number: 8034697Abstract: Methods and structures are provided for formation of devices, e.g., solar cells, on substrates including, e.g., lattice-mismatched materials, by the use of aspect ratio trapping (ART) and epitaxial layer overgrowth (ELO). In general, in a first aspect, embodiments of the invention may include a method of forming a structure. The method includes forming a first opening in a masking layer disposed over a substrate that includes a first semiconductor material. A first layer, which includes a second semi-conductor material lattice-mismatched to the first semiconductor material, is formed within the first opening. The first layer has a thickness sufficient to extend above a top surface of the masking layer. A second layer, which includes the second semiconductor material, is formed on the first layer and over at least a portion of the masking layer.Type: GrantFiled: September 18, 2009Date of Patent: October 11, 2011Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: James Fiorenza, Anthony Lochtefeld, Jie Bai, Ji-Soo Park, Jennifer Hydrick, Jizhong Li, Zhiyuan Cheng
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Publication number: 20110121310Abstract: Solid state lighting devices with selected thermal expansion and/or surface characteristics, and associated methods are disclosed. A method in accordance with a particular embodiment includes forming an SSL (solid state lighting) formation structure having a formation structure coefficient of thermal expansion (CTE), selecting a first material of an interlayer structure to have a first material CTE greater than the substrate CTE, and selecting a second material of the interlayer structure based at least in part on the second material having a second material CTE less than the first material CTE. The method can further include forming the interlayer structure over the SSL formation structure by disposing (at least) a first layer of the first material over the SSL formation structure, a portion of the second material over the first material, and a second layer of the first material over the second material.Type: ApplicationFiled: August 23, 2010Publication date: May 26, 2011Applicant: Micron Technology, Inc.Inventor: Ji-Soo Park
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Patent number: 7940734Abstract: A mobile communication system structured in a radio access network having a base station, a control station, and a switch network for matching a mobile station and a core network, the control station comprising a traffic signal process; a control signal processor; a call process load controller; and a call processor, wherein the call process load controller refers to information on call process volume included in a call process volume request message sent from the call processor and the traffic signal processor, selects the corresponding call processor and traffic signal processor according to weight estimated based on software and hardware performance, and sends the call control service request message containing information on the selected traffic signal processor to the selected call processor.Type: GrantFiled: May 17, 2005Date of Patent: May 10, 2011Assignee: Electronics and Telecommunications Research InstituteInventors: Ji-Soo Park, Moon-Soo Jang, In-Seong Park, Pyeong-Jung Song
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Patent number: 7894815Abstract: The present invention relates to a device for providing a quality of service (QoS) of a hand-off between heterogeneous networks, and a method thereof. According to the present invention, the device includes a device for performing a QoS management function for each access system and a device for performing a QoS management function between heterogeneous access systems in a network including a plurality of interlocked access systems. The device for performing the QoS management function for each access system manages a user service session, a local QoS of the access system, and a QoS context of the service session. The device for performing the QoS management function between the heterogeneous access systems negotiates the QoS of the service session and manages the QoS context when the hand-off is performed between the heterogeneous access systems, and performs a QoS mapping operation.Type: GrantFiled: October 5, 2006Date of Patent: February 22, 2011Assignees: Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd., KT CorporationInventors: Seung-Kwon Baek, Bong-Ju Lee, Jae-Su Song, Won-Ik Kim, Ji-Soo Park, Soo-Chang Kim, Sung-gu Choi, Hyung-Sub Kim, Yeon-Seung Shin
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Publication number: 20100302997Abstract: A system and method for reassembling packets in a packet relay node are provided. A packet relay node located between a transmitting node (i.e., a source node) and a receiving node (i.e., a destination node) inspects received packets to see if they are fragmented packets and reassembles a series of packets decided to be fragmented packets into an original packet, thereby reducing overhead and radio resource waste caused by duplicate transmission of IP headers having the same fragmented-packet information.Type: ApplicationFiled: July 16, 2008Publication date: December 2, 2010Applicants: Electronics and Telecommunications Research Insti tute, Samsung Electronics Co. LTD.Inventors: Ji-Soo Park, Cheol-Hye Cho, Sung-Hee Kim, Yeong-Jin Kim, Young-Jick Bahg
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Patent number: 7843832Abstract: In a bandwidth allocation method and/or apparatus for adaptively allocating radio channels in a mobile communication system, a token bucket is periodically filled with an amount of tokens that corresponds to a requested amount of bandwidth, and a bandwidth is allocated in accordance with the amount of tokens in the token bucket. In a further bandwidth allocation method and/or apparatus for adaptively allocating radio channels in a mobile communication system, a packet classification module classifies received packets on the basis of one of an Internet Protocol address, a port, and an upper layer protocol, a packet scheduler module receives the classified packet from a buffer module for transmission to a mobile station, and a bandwidth allocation module forms the buffer module for bandwidth allocation and processes traffic services by inter-working with the packet scheduler module when the bandwidth allocation is requested.Type: GrantFiled: September 28, 2006Date of Patent: November 30, 2010Assignees: Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd., KT CorporationInventors: Sung-gu Choi, Ji-Soo Park, Soon-Gi Park, Jae-Su Song, Sang-Woo Nam, Yeon-Seung Shin, Yeong-Jin Kim
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Publication number: 20100216277Abstract: Methods and structures are provided for formation of devices, e.g., solar cells, on substrates including, e.g., lattice-mismatched materials, by the use of aspect ratio trapping (ART) and epitaxial layer overgrowth (ELO). In general, in a first aspect, embodiments of the invention may include a method of forming a structure. The method includes forming a first opening in a masking layer disposed over a substrate that includes a first semiconductor material. A first layer, which includes a second semi-conductor material lattice-mismatched to the first semiconductor material, is formed within the first opening. The first layer has a thickness sufficient to extend above a top surface of the masking layer. A second layer, which includes the second semiconductor material, is formed on the first layer and over at least a portion of the masking layer.Type: ApplicationFiled: September 18, 2009Publication date: August 26, 2010Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: James Fiorenza, Anthony Lochtefeld, Jie Bai, Ji-Soo Park, Jennifer Hydrick, Jizhong Li, Zhiyuan Cheng
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Patent number: 7733871Abstract: In a QoS information controller and method, the QoS information controller is used in a multi-cell environment to determine the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource, and to control the QoS information. In addition, a QoS requested by a user may be achieved since the traffic characteristic, the mobile communication system characteristic, the traffic processing capacity, and the radio resource are determined and the QoS information is controlled to efficiently process the QoS information for the multimedia traffic in the multi-cell environment.Type: GrantFiled: September 22, 2006Date of Patent: June 8, 2010Assignees: Electronics and Telecommunications Research Institute, SK Telecom Co., Ltd., KT CorporationInventors: Sung-gu Choi, Soo-Chang Kim, Ji-Soo Park, Seung-Kwon Baek, Won-Ik Kim, Yeon-Seung Shin, Yeong-Jin Kim
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Publication number: 20100091734Abstract: A method for forwarding packets in handover between base stations (eNBs) is provided. A source eNB confirming handover success sends control data indicating an EOD of a forwarding packet to a target eNB when there are no more packets to be forwarded to the target eNB, and the target eNB receiving the control data recognizes from the control data that there are no more packets to be forwarded from the source eNB, thus preventing delay in the handover between the eNBs.Type: ApplicationFiled: July 28, 2008Publication date: April 15, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co. LtdInventors: Ji-soo Park, Cheol-hye Cho, Yeong-jin Kim, Young-jick Bahg
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Publication number: 20100072515Abstract: A surface of the first semiconductor crystalline material has a reduced roughness. A semiconductor device includes a low defect, strained second semiconductor crystalline material over the surface of the first crystalline material. A surface of the strained second semiconductor crystalline material has a reduced roughness. One example includes obtaining a surface with reduced roughness by creating process parameters that reduce impurities at an interfacial boundary between the first and second semiconductor crystalline materials. In one embodiment, the first semiconductor crystalline material can be confined by an opening in an insulator having an aspect ratio sufficient to trap defects using Aspect Ratio Trapping techniques.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Applicant: AMBERWAVE SYSTEMS CORPORATIONInventors: Ji-Soo Park, James G. Fiorenza
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Publication number: 20100002632Abstract: A method for scheduling packets from a plurality of radio bearers by a scheduler of a first layer includes calculating a virtual scheduling time for the radio bearers by using a packet delay variation of the radio bearers, and transmitting the packet of the radio bearer having the greatest virtual scheduling time from among the plurality of radio bearers to a second layer.Type: ApplicationFiled: November 30, 2007Publication date: January 7, 2010Applicants: Electronics and Telecommunications Research Institute, Samsung Electronics Co., Ltd.Inventors: Ji-Soo Park, Han-Jun Yoon, Dong-Jin Shin, Cheol-Hye Cho, Moon-Soo Jang, Chang-Ki Kim, Young-Jick Bahg
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Publication number: 20100003999Abstract: A mobile communication system structured in a radio access network having a base station, a control station, and a switch network for matching a mobile station and a core network, the control station comprising a traffic signal process; a control signal processor; a call process load controller; and a call processor, wherein the call process load controller refers to information on call process volume included in a call process volume request message sent from the call processor and the traffic signal processor, selects the corresponding call processor and traffic signal processor according to weight estimated based on software and hardware performance, and sends the call control service request message containing information on the selected traffic signal processor to the selected call processor.Type: ApplicationFiled: May 17, 2005Publication date: January 7, 2010Applicant: Electronics and Telecommunications Research InstituteInventors: Ji-Soo Park, Moon-Soo Jang, In-Seong Park, Pyeong-Jung Song
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Publication number: 20090321882Abstract: A device includes an epitaxially grown crystalline material within an area confined by an insulator. A surface of the crystalline material has a reduced roughness. One example includes obtaining a surface with reduced roughness by creating process parameters which result in the dominant growth component of the crystal to be supplied laterally from side walls of the insulator. In a preferred embodiment, the area confined by the insulator is an opening in the insulator having an aspect ratio sufficient to trap defects using an ART technique.Type: ApplicationFiled: June 2, 2009Publication date: December 31, 2009Applicant: Amberwave Systems CorporationInventor: Ji-Soo Park
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Publication number: 20080099785Abstract: Lattice-mismatched epitaxial films formed proximate non-crystalline sidewalls. Embodiments of the invention include formation of facets that direct dislocations in the films to the sidewalls.Type: ApplicationFiled: September 7, 2007Publication date: May 1, 2008Applicant: AmberWave Systems CoporationInventors: Jie Bai, Ji-Soo Park, Anthony Lochtefeld
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Publication number: 20080069086Abstract: The present invention relates to an internet protocol (IP) mobile communication system and a session initiation method thereof. In the IP mobile communication system, a session initiation process using a session initiation protocol is performed for real-time mobile multimedia communication. At this time, not only multimedia codec but also session and quality of service (QoS) information is negotiated from a transmitting terminal to a receiving terminal, and is negotiated between relating network elements. An access manager controls a mobile access router which is a gateway of an access network according to the negotiated session and QoS information. Therefore an additional QoS negotiation process is not necessary for a session guaranteeing the QoS between a terminal and the mobile access router, between the mobile access routers, and between the mobile access router and the receiving terminal.Type: ApplicationFiled: November 22, 2005Publication date: March 20, 2008Inventors: Dong-Jin Shin, Ji-Soo Park, In-Seong Park, Moon-Soo Jang, Pyeong-Jung Song
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Publication number: 20070133407Abstract: The present invention relates to a bandwidth allocation apparatus and a method thereof. The present invention provides a method for adaptively allocating and controlling radio channels to multimedia traffic having various characteristics. Particularly, the present invention proposes a method for maximizing a system resource use rate while satisfying a communication QoS requirement for individual video traffic. Therefore, the adaptive bandwidth allocation method according to the present invention guarantees system performance and user-required communication QoS.Type: ApplicationFiled: September 28, 2006Publication date: June 14, 2007Inventors: Sung-gu Choi, Ji-Soo Park, Soon-Gi Park, Jae-Su Song, Sang-Woo Nam, Yeon-Seung Shin, Yeong-Jin Kim