Patents Assigned to Institute For Information Technology
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Patent number: 7414551Abstract: A method and apparatus for encoding and decoding data for a recording system. The method of encoding data involves encoding input data into a predetermined code and precoding the predetermined code so that output levels of a channel can be detected, the channel being defined by a predetermined channel polynomial.Type: GrantFiled: September 21, 2004Date of Patent: August 19, 2008Assignees: Samsung Electronics Co., Ltd., Institute for Information Technology AdvancementInventors: Jun Lee, Kyong-mi Lee
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Patent number: 7379276Abstract: Provided is a magnetic recording head including a return pole, a writing pole spaced by a predetermined distance from the return pole, an induction writing coil for inducing a magnetic field to be formed across the writing pole, and a plurality of shield layers formed on the writing pole. Accordingly, magnetic fields generated inside and outside the magnetic recording head are prevented from concentrating on the return pole, and information is effectively written on and erased from an information recording media.Type: GrantFiled: September 17, 2004Date of Patent: May 27, 2008Assignees: Samsung Electronics Co., Ltd., Institute for Information Technology AdvancementInventors: Young-hun Im, Yong-su Kim
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Patent number: 7355812Abstract: A disk drive having an anti-shock structure is provided. The disk drive includes: a base member; a spindle motor supported by a spindle motor support formed on the base member, the spindle motor rotating a data storage disk; an actuator rotatably coupled to an actuator pivot supported by a pivot support formed on the base member, the actuator moving a read/write head to a position on a recording surface of the disk; and slots formed in the base member around the circumference of each of the spindle motor support and the pivot support, the slots for partially controlling the stiffness of the base member. The slots include a first slot formed on a circumference region of the spindle motor support near the pivot support, and a second slot formed on a circumference region of the pivot support opposite to the spindle motor support. Due to the structure of the disk drive, the spindle motor and the actuator pivot are inclined in the same direction when an external impact is applied.Type: GrantFiled: October 14, 2004Date of Patent: April 8, 2008Assignee: Institute for Information Technology AdvancementInventors: Yong-kyu Byun, Dong-ho Oh, Min-pyo Hong, Jeong-seok Koh
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Patent number: 7336800Abstract: The present invention relates to a method, computer program product and a device for detecting watermarks in digital data for the purpose of electronic copyright management system. The invention includes transforming the original as well as unwatermarked data. Thereafter, tagging the resultant components of the transformed data using a pair of rows and columns. Then, selecting significant components in the said transformed data, transforming the suspected watermarked data and tagging the components in the transformed data. Further, selecting the tagged components from the transformed suspected watermarked data corresponding to those selected as significant in the original transformed data, and comparing said two groups of selected significant components to detect the watermarks.Type: GrantFiled: May 14, 2003Date of Patent: February 26, 2008Assignee: Indian Institute of Information TechnologyInventors: Trevor Miranda, Manindra Mohan
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Patent number: 7227890Abstract: Disclosed is a VDSL (very high bit-rate digital subscriber line) system on the DMT line coding method basis and a method for determining a length of cyclic prefix samples using the system. The VDSL system comprises a transmitter data including cyclic prefix samples through a channel; a receiver for receiving the data including the cyclic prefix samples; a controller for controlling the transmitter and the receiver to control an initialization operation including handshake, training, channel analysis, and exchange, and a data transmission operation after the initialization operation; and a cyclic prefix sample length estimator for estimating an optimized length of the cyclic prefix sample on the basis of the correlation between the cyclic prefix sample and other data.Type: GrantFiled: April 30, 2002Date of Patent: June 5, 2007Assignees: Huconex Co., Ltd., Institute Information Technology AssessmentInventors: Chan Moon, Hui-Chul Won, Tae-Hyoung Kim, Seung-Ho Choo, Gi-Hong Im
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Patent number: 7209471Abstract: A data transfer method transfers data between two bluetooth devices located in a bluetooth scatternet. The Upper Layer PDU to be transferred is divided into a group of packets which are suitable for baseband transmission. According to a link path table, a group of link identifications of the target device is selected. A link field length, link number and multiple link ID fields of the selected group of link identifications and bluetooth header are added into data packets. A dedicate link associated with link ID1 field of present transmitting data packet and transmitter queue which corresponding to the link is used to transfer the packet through baseband, radio frequency into wireless channel.Type: GrantFiled: May 9, 2003Date of Patent: April 24, 2007Assignee: Institute For Information TechnologyInventor: Alexander T. P. Hong
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Patent number: 7181101Abstract: The disclosure is an optical measuring system and the method thereof for precisely measuring physical characteristics of light emitted from waveguides, such as beam size, pattern, strength, focusing, collimation degree, and divergence angle, by means of a plane optical detector in which a plurality of pixels formed by a semiconductor fabrication process are arranged in an array, without specific measuring means. The light is incident into ends of the arrayed waveguides with uniform time intervals and emitted from the other ends of the waveguides to reach the optical detectors through which the physical characteristics of the light are obtained and defined arithmetically.Type: GrantFiled: July 12, 2002Date of Patent: February 20, 2007Assignees: Hantech Co., Ltd., Institute of Information Technology AssessmentInventors: Gwan Chong Joo, Jae Shik Choi, Ki Woo Chung, Do Hoon Kim
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Patent number: 7174544Abstract: A JAVA program language compile-on-demand service system and method for accelerating a processing speed of a JAVA program in a data processing system having a relatively low performance is provided. The JAVA COD service system compiles a JAVA class file to be executed in a data processing system into a pattern which can be executed more speedily on the data processing system, and then transmits the compiled result, upon a request of the data processing system connected via a network in order to execute the JAVA program at a relatively faster speed. The system includes JAVA program providing servers, data processing systems, and a compile-on-demand server for receiving a service request, downloading a requested JAVA class file, compiling the downloaded JAVA class file, and transmitting the compiled result.Type: GrantFiled: March 14, 2002Date of Patent: February 6, 2007Assignees: Interwise Co., Ltd., Institute of Information Technology AssessmentInventor: Dae Hoon Zee
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Patent number: 7159211Abstract: The present invention provides system and methods for executing a sequential in parallel. Parallel procedures, specified in the program, are executed as parallel slave processes. A process when actually accessing a ‘synchronous object’ that does not contain the data value same as in program's sequential run gets blocked till the right value is received. Object value transfer takes place through an ownership queue. Synchronization over referred objects along with run-time alterations in the linkage structure of the objects is also supported. In the event of a fault, aborted processes are rescheduled and redundancy in data storage is avoided.Type: GrantFiled: August 28, 2003Date of Patent: January 2, 2007Assignee: Indian Institute of Information TechnologyInventors: Abhinav Jalan, Retesh Chadha
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Patent number: 7152145Abstract: The present invention provides a method of improving the speed of processing of a system and optimizing system performance in RTOS by searching for a task on which occupancy time is the longest in a system mode and transferring a stack from an armored memory to an embedded memory, and by reallocating the stack pointers. According to the present invention, since a microprocessor which has an expensive and large embedded memory does not have to be mounted, costs of manufacturing in mass production can be lowered.Type: GrantFiled: April 23, 2003Date of Patent: December 19, 2006Assignees: Hoseotelnet Co. Ltd., Institute of Information Technology AssessmentInventors: Lang Ki Kim, Kyeong Chang Choi
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Patent number: 6937097Abstract: The present invention relates to a high-frequency power amplifier having differential inputs, and more specifically to a high-frequency power amplifier having differential inputs, in which a structure of an output port of a communication system for 2.4 GHz ISM frequency band can be simplified by designing and producing the high-frequency power amplifier having differential inputs for 2.4 GHz ISM frequency band using a silicon germanium (SiGe) microwave monolithic integrated circuit (MMIC), thereby decreasing the number of components of a transmission unit and reducing a price of the communication system.Type: GrantFiled: September 24, 2003Date of Patent: August 30, 2005Assignees: Tachyonics Corp., Institute of Information Technology AssessmentInventors: Jae Hong Joo, Kyong Ryol Kim, Kee Cheol Ahn, Jin Sung Choi
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Patent number: 6859176Abstract: The present invention relates to a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar dielectric substrate has two parallel surfaces. The first conductive pattern is arranged on one surface of the substrate, and is provided with a first feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the first feeder line and designed such that some of them operate in a high frequency band (4.9 to 5.85 GHz frequency band), and others thereof operate in a low frequency band (2.4 to 2.5 GHz frequency band).Type: GrantFiled: March 18, 2003Date of Patent: February 22, 2005Assignees: Institute Information Technology AssessmentInventor: Jong-In Choi
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Publication number: 20040183727Abstract: The present invention discloses a dual-band omnidirectional antenna for wireless LANs. The antenna has a planar dielectric substrate, and first and second conductive patterns. The planar dielectric substrate has two parallel surfaces. The first conductive pattern is arranged on one surface of the substrate, and is provided with a first feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the first feeder line and designed such that some of them operate in a high frequency band (4.9 to 5.85 GHz frequency band), and others thereof operate in a low frequency band (2.4 to 2.5 GHz frequency band). The second conductive pattern is arranged on the other surface of the substrate, and provided with a second feeder line arranged on a longitudinal central line of the substrate and a plurality of radiating elements connected to the second feeder line and up-down symmetrically arranged with respect to the radiating elements on the first conductive pattern.Type: ApplicationFiled: March 18, 2003Publication date: September 23, 2004Applicants: SUNWOO COMMUNICATION CO., LTD., INSTITUTE INFORMATION TECHNOLOGY ASSESSMENTInventor: Jong-In Choi
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Publication number: 20040172626Abstract: The present invention provides system and methods for executing a sequential in parallel. Parallel procedures, specified in the program, are executed as parallel slave processes. A process when actually accessing a ‘synchronous object’ that does not contain the data value same as in program's sequential run gets blocked till the right value is received. Object value transfer takes place through an ownership queue. Synchronization over referred objects along with run-time alterations in the linkage structure of the objects is also supported. In the event of a fault, aborted processes are rescheduled and redundancy in data storage is avoided.Type: ApplicationFiled: August 28, 2003Publication date: September 2, 2004Applicant: Indian Institute of Information TechnologyInventors: Abhinav Jalan, Retesh Chadha
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Publication number: 20040062394Abstract: The present invention relates to a method, computer program product and a device for detecting watermarks in digital data for the purpose of electronic copyright management system. The invention includes transforming the original as well as unwatermarked data. Thereafter, tagging the resultant components of the transformed data using a pair of rows and columns. Then, selecting significant components in the said transformed data, transforming the suspected watermarked data and tagging the components in the transformed data. Further, selecting the tagged components from the transformed suspected watermarked data corresponding to those selected as significant in the original transformed data, and comparing said two groups of selected significant components to detect the watermarks.Type: ApplicationFiled: May 14, 2003Publication date: April 1, 2004Applicant: Indian Institute of Information TechnologyInventors: Trevor Miranda, Manindra Mohan
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Patent number: 6694437Abstract: Two stages of PPP negotiations are adopted for users to access a virtual private network (VPN). The access concentrator for providing PPP connections is designed to provide the two-stage connection. In the first stage, a user is verified as an authenticated VPN user, and a first network address is assigned. In the second stage, a service requested by the authenticated user is decoded for determining either the service being a VPN service or a non-VPN service. If the service is a non-VPN service, the request is processed by reference to the network address. Otherwise, a second PPP negotiation is executed between the access concentrator and a server in a VPN, and then the server of the VPN assigns the user a VPN address for providing VPN service.Type: GrantFiled: June 22, 1999Date of Patent: February 17, 2004Assignee: Institute for Information TechnologyInventors: Lih-Gwo Pao, Wei-Yuan Do, Isaac Yi-Yuan Lee
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Publication number: 20030171951Abstract: An apparatus and method for automatically ordering medical goods in an electronic commerce site. The automatic medical goods ordering apparatus and method can automatically order medical goods from a medical goods provider using an electronic commerce site in order to smoothly supply medical goods which consumers desire. Namely, in order to smoothly supply medical goods which consumers desire to purchase, the automatic medical goods ordering apparatus and method are capable of previously checking a purchase quantity of medical goods and automatically ordering necessary medical goods from a provider of the medical goods and holding expected optimum stocks of the medical goods. As a result, the present invention is highly efficient in that the consumers such as hospitals and pharmacies can easily purchase the medical goods, and, on the other hand, it is possible to minimize economic loss due to maintaining unnecessarily large stocks of the medical goods.Type: ApplicationFiled: March 11, 2002Publication date: September 11, 2003Applicant: Institute of Information Technology AssesmentInventors: Hyun Jung Cho, Dong Il Lim
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Patent number: 6572414Abstract: A modular jack includes a housing, a first signal pair, and a second signal pair. The first signal pair passes through the housing and includes a first conductor and a second conductor. A first imaginary plane contains the first and the second conductor. The second signal pair passes through the housing and includes a third conductor and a fourth conductor. A second imaginary plane contains the third and the fourth conductor, which are bent at least one time to cross each other inside the housing. The first and the second imaginary plane form a first angle of 80 to 90 degrees inside the housing before the crossing of the third and the fourth conductor while they form a second angle of 0 to 10 degrees inside the housing after the crossing thereof.Type: GrantFiled: December 21, 2001Date of Patent: June 3, 2003Assignees: Korea Telecom, The Institute of Information Technology AssessmentInventors: Jeong-Gyun Ahn, Taeseok Suh, Sangjo Kim, Junggon Kim, Sung Hyuk Joo, Byoung-Wook Kang, Noh-Hoon Myung, Jung-Ho Yoon