Patents by Inventor Chang Ko
Chang Ko 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: 8378896Abstract: A wide band antenna includes a radiation element, a ground surface, a dielectric element, a connector; a first microstrip feeder and a second microstrip feeder. The radiation element is a rectangle shaped and includes a first side and a second side. The lengths of the first side and the second side are not equal. The dielectric element is positioned between the radiation element and the ground surface. One end of the first microstrip feeder is connected to the first side of the radiation element. One end of the second microstrip feeder is connected to the second side of the radiation element, the other ends of the first and second microstrip feeder are connected to the connector.Type: GrantFiled: July 22, 2010Date of Patent: February 19, 2013Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Chih-Yuan Yang, Shih-Yen Peng, Chien-Tang Lin, Hung-Chang Ko
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Patent number: 8294373Abstract: An illumination apparatus is provided. The apparatus includes a power supply unit, a switch unit, a bulb, a wireless unit, and a control unit. The power supply unit is for supplying power. The switch unit is for opening or closing a circuit between the power source unit and the bulb. The wireless unit is for receiving wireless signals from an external control device, and generating a first control signal when receiving the wireless signals. The control unit is for generating a close signal according to the first control signal. The switch unit closes the circuit between the power source unit and the bulb according to the close signal to enable the bulb to keep emitting light; and opens the circuit between the power source unit and the bulb if no receiving the close signal, thereby keeping the bulb extinguishing. A related control device for controlling the apparatus is also provided.Type: GrantFiled: June 10, 2009Date of Patent: October 23, 2012Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Hung-Chang Ko, Suo-Bing Su, Po-Wei Kuo, Chih-Yuan Yang, Wen-Chun Chen, Li-Cheng Chiang
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Patent number: 8223664Abstract: Embodiments of the disclosure relate to method and apparatus for efficient wireless adaptive uplink protocols for communication networks.Type: GrantFiled: August 17, 2009Date of Patent: July 17, 2012Assignee: Empire Technology Development LLCInventors: You-Chang Ko, Sumit Roy
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Publication number: 20120134339Abstract: Provided are a system and method for setting an adaptive set of handoff parameters. The system includes a user terminal configured to transmit an authentication request to a network and receive a set of handoff parameters from the network; an access point (AP) belonging to the network and configured to receive the authentication request from the user terminal, transmit the authentication request to a central management server, receive the set of handoff parameters from the central management server, and transmit the set of handoff parameters to the user terminal; and the central management server, which is configured to store and manage a plurality of network-specific sets of handoff parameters for one or more networks, authenticate the user terminal using the authentication request received from the AP, and transmit a set of handoff parameters of a network to which the authenticated user terminal connects to the AP.Type: ApplicationFiled: November 23, 2011Publication date: May 31, 2012Applicant: SAMSUNG SDS CO., LTD.Inventors: Yang Hwan JOE, You Chang KO
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Publication number: 20120120948Abstract: Disclosed herein are an automatically-switchable network extension apparatus and a switching method thereof. An automatic connection mechanism is particularly introduced into the apparatus. Exemplarily, a random number scheme is used to generate a value to be a basis for configuring the apparatus functioned as a CO or CPE operational mode. Based on the value, the method is to perform a connection with the other network extension apparatus. According to the embodiment, a set of connection parameters and the randomly-generated value are generated after the apparatus is initialized. The apparatus may be configured as CO or CPE operational mode according to the value, and simultaneously detect the operational mode of the apparatus to be linked. The apparatus accomplishes the connection if the two apparatuses have different modes, or the value is generated again to perform the connection.Type: ApplicationFiled: November 12, 2010Publication date: May 17, 2012Applicant: ETHERWAN SYSTEMS, INC.Inventor: JEN-CHANG KO
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Patent number: 8174806Abstract: An electrostatic discharge (ESD) protection element includes a first diode, a second diode, and a poly resistor. The first diode is connected between a first voltage and an input/output (I/O) pad. The second diode is connected between the I/O pad and a second voltage. The poly resistor is formed on the second diode.Type: GrantFiled: February 12, 2010Date of Patent: May 8, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Suk-Jin Kim, Han-Gu Kim, Jae-Hyok Ko, Hyo-Cheol Ban, Min-Chang Ko, Kyoung-Ki Jeon
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Patent number: 8171165Abstract: A file conversion system is capable of transmitting via a network a file provided by a file providing end in a format supported by a file receiving end to the file receiving end. The file conversion system includes a receiving module for receiving the file provided by the file providing end; a conversion module for converting the format of the file provided by the file providing end into a format supported by the file receiving end; a database module for recording a profile of the file receiving end, with the profile including the format supported by the file receiving end; and a transmission module for transmitting the file to the file receiving end via the network. If the format of the file is not supported by the file receiving end, the conversion module may, in accordance with the profile of the file receiving end, convert the format of the file into the format supported by the file receiving end so as to allow the transmission module to transmit the file to the file receiving end.Type: GrantFiled: December 26, 2007Date of Patent: May 1, 2012Assignee: Ubitus Inc.Inventors: Wei-Hao Peng, Shien-Chang Ko, Shu-Fan Chen
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Publication number: 20120099869Abstract: An optical LNB capable of fast position-adjusting is employed in an LNBF. The optical LNB includes a down-converting device coupled to an OMT of the LNBF for down-converting a polarized signal for generating a first intermediate frequency signal, a branching device for branching the first intermediate frequency signal for generating a second and a third intermediate frequency signals, an electrical/optical converting device coupled to the branching device for converting the second intermediate frequency signal into an optical signal, and a power end for receiving power from a power supply and outputting the third intermediate frequency signal.Type: ApplicationFiled: December 15, 2010Publication date: April 26, 2012Inventors: Che-Ming Wang, Chih-Chang Ko
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Patent number: 8009106Abstract: A dual frequency antenna includes a first scythe-shaped arm and a second scythe-shaped arm. The first scythe-shaped arm is configured for operating in a first band. The second scythe-shaped arm is configured for operating in a second band and includes an inverted-T-shaped strip with a foot of the inverted-T-shaped strip connected to the second scythe-shaped arm. The first scythe-shaped arm is attached to the second scythe-shaped arm at an apex. A head of the inverted-T-shaped strip is closer to the apex than the foot. A communication system is also provided.Type: GrantFiled: April 14, 2009Date of Patent: August 30, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Chih-Yuan Yang, Po-Wei Kuo, Suo-Bing Su, Hung-Chang Ko, Wen-Chun Chen
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Patent number: 7971756Abstract: A filtering device includes an isolation substrate including a first plane and a second plane, a micro-strip line deposited on the first plane of the isolation substrate for transmitting signals, and a ground metal layer deposited on the second plane of the isolation substrate for providing grounding. A meander-shaped resonating cavity is formed in an area of the ground metal layer corresponding to an area of the micro-strip line, for generating a rejection band on the micro-strip line.Type: GrantFiled: June 1, 2009Date of Patent: July 5, 2011Assignee: Wistron NeWeb CorporationInventors: Tsan-Chou Wu, Wen-Tsai Tsai, Chih-Chang Ko
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Publication number: 20110156961Abstract: A wide band antenna includes a radiation element, a ground surface, a dielectric element, a connector; a first microstrip feeder and a second microstrip feeder. The radiation element is a rectangle shaped and includes a first side and a second side. The lengths of the first side and the second side are not equal. The dielectric element is positioned between the radiation element and the ground surface. One end of the first microstrip feeder is connected to the first side of the radiation element. One end of the second microstrip feeder is connected to the second side of the radiation element, the other ends of the first and second microstrip feeder are connected to the connector.Type: ApplicationFiled: July 22, 2010Publication date: June 30, 2011Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: CHIH-YUAN YANG, SHIH-YEN PENG, CHIEN-TANG LIN, HUNG-CHANG KO
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Patent number: 7916093Abstract: A multiband antenna includes a conductive sheet, a feeding point, and a grounding point. The conductive sheet defines a first slot, a second slot, a third slot, a fourth slot, a fifth slot, a sixth slot, and a seventh slot thereon. The second slot and the third slot extend from a same short side of the first slot and are parallel to each other. The fourth slot, the fifth slot, the sixth slot, and the seventh slot extend perpendicularly from a short side of the third slot away from the first slot in sequence. The feeding point is formed on the conductive sheet at a long side of the first slot away from the third slot. The grounding point is formed on the conductive sheet at a margin of the slots different from the location of the feeding point.Type: GrantFiled: September 30, 2008Date of Patent: March 29, 2011Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Li-Cheng Chiang, Chih-Yuan Yang, Hung-Chang Ko, Po-Wei Kuo, Suo-Bing Su, Wen-Chun Chen
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Publication number: 20110039545Abstract: Embodiments of the disclosure relate to adaptive uplink protocols for communication networks.Type: ApplicationFiled: August 17, 2009Publication date: February 17, 2011Inventors: You-Chang Ko, Sumit Roy
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Publication number: 20100214705Abstract: An electrostatic discharge (ESD) protection element includes a first diode, a second diode, and a poly resistor. The first diode is connected between a first voltage and an input/output (I/O) pad. The second diode is connected between the I/O pad and a second voltage. The poly resistor is formed on the second diode.Type: ApplicationFiled: February 12, 2010Publication date: August 26, 2010Applicant: Samsung Electronics Co., Ltd.Inventors: Suk-Jin Kim, Han-Gu Kim, Jae-Hyok Ko, Hyo-Cheol Ban, Min-Chang Ko, Kyoung-Ki Jeon
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Publication number: 20100178278Abstract: A formable bioceramic including hydroxyapatite nanocrystals, gelatin, and sol-gel-containing material is described. Also described is a process for making and using the bioceramic. The formable bioceramic displays superior mechanical strength, elasticity, biocompatibility and forming capabilities and is targeted for bone repairs and template-assisted tissue engineering applications.Type: ApplicationFiled: January 12, 2010Publication date: July 15, 2010Applicant: THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILLInventors: Tzy-Jiun Mark Luo, Ching-Chang Ko, Camilla Tulloch
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Patent number: 7733897Abstract: A channel allocating method for random access is disclosed, which is suitable for allocation of uplink RACH in a radio access network and by which random access processing performance in a radio access network is enhanced using RACH of new structure. The present invention includes the steps of setting up a channel area (Ic) dedicated for new access attempt among random access channels of a prescribed frame (t) and allowing a mobile terminal to attempt access to an access point via a prescribed random access channel corresponding to the channel area (Ic).Type: GrantFiled: May 31, 2005Date of Patent: June 8, 2010Assignee: LG Electronics Inc.Inventors: You Chang Ko, Choong Ho Cho, Hyong Woo Lee
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Publication number: 20100073109Abstract: A filtering device includes an isolation substrate including a first plane and a second plane, a micro-strip line deposited on the first plane of the isolation substrate for transmitting signals, and a ground metal layer deposited on the second plane of the isolation substrate for providing grounding. A meander-shaped resonating cavity is formed in an area of the ground metal layer corresponding to an area of the micro-strip line, for generating a rejection band on the micro-strip line.Type: ApplicationFiled: June 1, 2009Publication date: March 25, 2010Inventors: Tsan-Chou Wu, Wen-Tsai Tsai, Chih-Chang Ko
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Publication number: 20090322638Abstract: A multiband antenna includes a conductive sheet, a feeding point, and a grounding point. The conductive sheet defines a first slot, a second slot, a third slot, a fourth slot, a fifth slot, a sixth slot, and a seventh slot thereon. The second slot and the third slot extend from a same short side of the first slot and are parallel to each other. The fourth slot, the fifth slot, the sixth slot, and the seventh slot extend perpendicularly from a short side of the third slot away from the first slot in sequence. The feeding point is formed on the conductive sheet at a long side of the first slot away from the third slot. The grounding point is formed on the conductive sheet at a margin of the slots different from the location of the feeding point.Type: ApplicationFiled: September 30, 2008Publication date: December 31, 2009Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Li-Cheng Chiang, Chih-Yuan Yang, Hung-Chang Ko, Po-Wei Kuo, Suo-Bing Su, Wen-Chun Chen
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Patent number: 7639200Abstract: An antenna includes a ground plane, a match portion, and a radiation portion. The ground plane is used for grounding. The match portion is parallel to the ground plane, and is connected to the ground plane. The radiation portion is connected to one end of the match portion, and extends upwardly with respect to the ground plane. The radiation portion can be a spiral element or a meandrous element. The radiation portion can also include a main body extending upwardly with respect to the ground plane, and a plurality of branches extending parallelly along a same direction from the main body.Type: GrantFiled: December 29, 2007Date of Patent: December 29, 2009Assignee: Hon Hai Precision Industry Co., Ltd.Inventors: Chih-Yuan Yang, Po-Wei Kuo, Suo-Bing Su, Hung-Chang Ko, Wen-Chun Chen
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Publication number: 20090315466Abstract: An illumination apparatus is provided. The apparatus includes a power supply unit, a switch unit, a bulb, a wireless unit, and a control unit. The power supply unit is for supplying power. The switch unit is for opening or closing a circuit between the power source unit and the bulb. The wireless unit is for receiving wireless signals from an external control device, and generating a first control signal when receiving the wireless signals. The control unit is for generating a close signal according to the first control signal. The switch unit closes the circuit between the power source unit and the bulb according to the close signal to enable the bulb to keep emitting light; and opens the circuit between the power source unit and the bulb if no receiving the close signal, thereby keeping the bulb extinguishing. A related control device for controlling the apparatus is also provided.Type: ApplicationFiled: June 10, 2009Publication date: December 24, 2009Applicant: HON HAI PRECISION INDUSTRY CO., LTD.Inventors: HUNG-CHANG KO, SUO-BING SU, PO-WEI KUO, CHIH-YUAN YANG, WEN-CHUN CHEN, LI-CHENG CHIANG