Patents by Inventor Chan Ahn

Chan Ahn 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).

  • Patent number: 8509697
    Abstract: An apparatus and a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.
    Type: Grant
    Filed: March 8, 2011
    Date of Patent: August 13, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Seob Hong, Byung-Chan Ahn, Hyun-Woo Lee, Seung-Joo Maeng
  • Patent number: 8396511
    Abstract: An apparatus and method in a broadband wireless communication system are provided. The apparatus includes a Base Station (BS) which includes a manager for increasing a set point associated with a Mobile Station (MS) if an error is detected in a burst received from the MS, a detector for incrementing a counter associated with the MS if a difference, between a maximum Transmission (Tx) power of the MS and a Tx power used by the MS when transmitting the burst in which the error was detected, is less than a difference threshold, and a determining unit for providing control such that a number of slots allocated to the MS decreases if the counter associated with the MS is greater than a counter threshold.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: March 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Chan Ahn, Jang-Won Park, Young-Soon Lee, Eun-Jin Lee, Soo-Yeul Oh
  • Patent number: 8284370
    Abstract: A mobile communication device comprises: a liquid crystal (LC) panel; a drive integrated circuit connected to the LC panel; a keypad printed circuit board (PCB) having a keypad connected to the drive integrated circuit; a flexible printed circuit board (FPCB) for connecting the drive integrated circuit and the keypad PCB to each other; a backlight assembly having an outer case, for supplying light to the LC panel; and a fixing member for fixing the FPCB and one end of the outer case of the backlight assembly by adhering to each other. The mobile communication device prevents a part of light emitted from an optical source from being displayed on a screen with a high brightness.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: October 9, 2012
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Hyoung Seo, Kook-Chan Ahn, Hye-Jeong Yoon, legal representative
  • Patent number: 8265620
    Abstract: An apparatus for use in a base station capable of checking whether a frequency is illegally used in a wireless communication system are provided. Operations of the base station for checking whether the frequency is illegally used includes setting a silence interval in which a resource is not allocated to a terminal, using silence interval setting information provided from a system manager; when the silence interval arrives, measuring RSSI; and transmitting the RSSI to the system manager to examine at least one of a frequency illegal use and a reception path error using the RSSI.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: September 11, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ki-Seob Hong, Seung-Joo Maeng, Byung-Chan Ahn
  • Publication number: 20120226134
    Abstract: A system for controlling a therapy machine is a method for controlling a therapy machine for irradiating radiation onto a patient whose body has been stabilized. The method acquires a video signal constituted by a plurality of pixels including information on the posture of the patient; converts the video signal to digital format, and generates video data including information on characteristic values of each of the plurality of pixels; and calculates, on the basis of the information, the number of pixels from among the plurality of pixels of which the characteristic values lie outside a predetermined range. Then, the therapy machine is controlled based on the calculated number. Thus, medical accidents due to inattention during observation by therapists may be prevented, and the accuracy of therapy through the therapy machine may be improved.
    Type: Application
    Filed: November 12, 2009
    Publication date: September 6, 2012
    Applicant: SAMSUNG LIFE WELFARE FOUNDATION
    Inventors: Sang Gyu Ju, Youngyih Han, Yong Chan Ahn, Jin Sung Kim
  • Publication number: 20120196642
    Abstract: An apparatus and a method control interference via inter-base station information exchange in a communication system. In a method for operating a serving base station, for controlling interference in a communication system, sum of yield loss amounts of terminals inside a neighbor base station by a power level rise of the serving base station is determined. Yield gain amounts of serving terminals by the power level rise of the serving base station are determined. The sum of the yield loss amounts of the terminals inside the neighbor base station by the power level rise of the serving base station is compared with the determined yield gain amounts of the serving terminals by the power level rise of the serving base station, so that a power level for each serving terminal is determined.
    Type: Application
    Filed: January 27, 2012
    Publication date: August 2, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Nam-Koo Kang, Jae-Hee Cho, Byung-Chan Ahn
  • Publication number: 20120195272
    Abstract: A method for avoiding interference of an interfering Base Station (BS) in an interfered BS of a mobile communication system includes determining an interference value of an interfering BS at a control region during a determination interval. When the interference value is greater than a threshold value, the method further includes operating in a modified Transmit/receive Transition Gap (TTG) mode. When the interference value is less than the threshold value, the method further includes operating in a general TTG mode.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 2, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Seob Hong, Sung-Han Lee, Il-Jin Youn, Jae-Hee Cho, Byung-Chan Ahn
  • Publication number: 20120191626
    Abstract: The FIVI may generate and manage forward-variance-sensitive financial indices and the associated portfolios of investment vehicles underlying them, as well as for construct tradable financial products based on the values of those indices. The FIVI may generate one or more indices reflective of a one-period (e.g., one-month) forward starting variance, which may provide exposure to implied volatility without significant exposure to realized volatility. The FIVI may replicate forward variance of an index by maintaining a portfolio of call and put options which may further employ delta-hedging. Maintenance of FIVI portfolios may further employ rolling, ongoing and/or periodic rebalancing.
    Type: Application
    Filed: November 4, 2011
    Publication date: July 26, 2012
    Inventors: Chan Ahn, Edin Buturovic, Ramanujachary Kumanduri
  • Publication number: 20120142117
    Abstract: The present invention provides a biosensor having a code electrode, a method for manufacturing the same, and a method for obtaining sensor information on the same, in which a code electrode for providing sensor information such as correction information, the type of biosensor, etc. is provided in each biosensor such that a measuring device can obtain necessary information on each biosensor from the code electrode, thus solving a variety of conventional problems. According to the present invention, since the biosensor includes the code electrode in itself and thus can directly provide a variety of information to the measuring device during the use of the biosensor, it is possible to solve the problems associated with the use of a bar code or scanner. Moreover, it is possible to improve the product value of biosensors. Further, since each biosensor can provide accurate sensor information to the measuring device, it is possible to improve the accuracy of measurement.
    Type: Application
    Filed: June 30, 2009
    Publication date: June 7, 2012
    Applicant: ALL MEDICUS CO., LTD.
    Inventors: Yon Chan Ahn, Mi Suk Park, Min Seok Cha, Hye Sook Jung
  • Publication number: 20120013821
    Abstract: A mobile communication device comprises: a liquid crystal (LC) panel; a drive integrated circuit connected to the LC panel; a keypad printed circuit board (PCB) having a keypad connected to the drive integrated circuit; a flexible printed circuit board (FPCB) for connecting the drive integrated circuit and the keypad PCB to each other; a backlight assembly having an outer case, for supplying light to the LC panel; and a fixing member for fixing the FPCB and one end of the outer case of the backlight assembly by adhering to each other. The mobile communication device prevents a part of light emitted from an optical source from being displayed on a screen with a high brightness.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Inventors: Young-Hyoung Seo, Kook-Chan Ahn, Hye-Jeong Yoon
  • Publication number: 20110268065
    Abstract: An apparatus and a method for scheduling resources in a wireless communication system are provided. A Modulation and Coding Scheme (MCS) level of resource allocation information of one or more terminals is determined. A temporary MCS level for resource allocation information of a frame is determined by considering an MCS level for resource allocation information of a k-th terminal of the set of terminals. A resource amount for allocating data is determined by considering the temporary MCS level. Whether a resource is allocable to the k-th terminal is determined by considering the resource amount for the data allocation. And when the resource is allocable to the k-th terminal, the MCS level of the resource allocation information of the frame is determined by considering the MCS level of the resource allocation information of the k-th terminal.
    Type: Application
    Filed: May 3, 2011
    Publication date: November 3, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hye-Mi Park, Jae-Ho Jeon, Byung-Chan Ahn, Nam-Koo Kang
  • Publication number: 20110249715
    Abstract: An apparatus and method reduce power consumption in a broadband wireless communication system. A transmitting end apparatus that includes a plurality of transmit (Tx) antennas includes a control block, a Processor (DSP) block, a modem block, and at least one power controller. The control block determines a traffic amount based on an amount of used resources. The Digital Signal Processor (DSP) block performs scheduling by using a subset of Tx antennas and a subset of resources on a frequency axis if the traffic amount is less than a threshold. The modem block applies boosting to a signal transmitted using the subset of resources. And at least one controller turns off an operation of at least one power amplifier that corresponds to at least one Tx antenna that is not included in the subset of Tx antennas.
    Type: Application
    Filed: April 13, 2011
    Publication date: October 13, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun-Seok Choi, Seung-Joo Maeng, Byung Chan Ahn
  • Patent number: 8031315
    Abstract: A mobile communication device comprises: a liquid crystal (LC) panel; a drive integrated circuit connected to the LC panel; a keypad printed circuit board (PCB) having a keypad connected to the drive integrated circuit; a flexible printed circuit board (FPCB) for connecting the drive integrated circuit and the keypad PCB to each other; a backlight assembly having an outer case, for supplying light to the LC panel; and a fixing member for fixing the FPCB and one end of the outer case of the backlight assembly by adhering to each other. The mobile communication device prevents a part of light emitted from an optical source from being displayed on a screen with a high brightness.
    Type: Grant
    Filed: June 13, 2008
    Date of Patent: October 4, 2011
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Hyoung Seo, Kook-Chan Ahn, Hye-Jeong Yoon, legal representative
  • Publication number: 20110218002
    Abstract: An apparatus and a method for controlling uplink interference in a wireless communication system. The method for controlling the uplink interference includes determining at least one interference signal power threshold determined by at least one neighbor Base Station (BS). The method also includes determining a transmit power offset for at least one serviced Mobile Station (MS) using the at least one interference signal power threshold. The method further includes sending the transmit power offset for the at least one MS to the at least one MS.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 8, 2011
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ki-Seob Hong, Byung-Chan Ahn, Hyun-Woo Lee, Seung-Joo Maeng
  • Publication number: 20110194512
    Abstract: A method and an apparatus for resource allocation scheduling in a wireless communication system are provided. The apparatus includes a scheduler for, if an UpLink (UL) scheduling for scheduling an allocation order of UL resources is performed prior to a DownLink (DL) scheduling for scheduling an allocation order of DL resources, setting a size ? representing a size in which a DL burst region is maximally allocated in a DL sub frame, for, if the DL scheduling is performed prior to the UL scheduling, setting a size ? representing a size in which the DL burst region is maximally allocated in the DL sub frame, for determining whether to discard a DL Medium Access Control (MAC) management message to be transmitted by using the size ?, and for, if it is not determined to discard the DL MAC management message, determining a priority of a DL scheduling and a UL scheduling by using the size ? and first performing one of the DL scheduling and the UL scheduling in accordance with the determined priority.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 11, 2011
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Hye-Mi PARK, Jeong-Heon KIM, Byung-Chan AHN, Won-Young PARK, Sung-Ha KIM, Seung-Joo MAENG
  • Publication number: 20110182258
    Abstract: A method and base station are provided for allocating a Hybrid Automatic Repeat Request (HARQ) channel according to service flow types. The method allocates a DownLink (DL) HARQ channel by a base station to a mobile station which can be provided with data corresponding to at least one Service Flow (SF) in a wireless communication system. At least one of a plurality of HARQ channels is mapped to a first SF. It is determined whether to allocate the mapped at least one HARQ channel as a dedicated HARQ channel of the first SF based on whether traffic of the first SF exists in a transmission queue corresponding to the first SF. Therefore, dedicated HARQ channels for a delay intolerant SF, such as a Voice over Internet Protocol (VoIP) SF, can be managed without loss of a maximum throughput for a delay tolerant SF such as a Best Effort (BE) SF.
    Type: Application
    Filed: January 25, 2011
    Publication date: July 28, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Pil-Jae MOON, Byung-Chan Ahn
  • Patent number: 7974198
    Abstract: Apparatus and method for guaranteeing a Quality of Service (QoS) traffic rate in a mobile communication system are provided. The scheduling method for guaranteeing a QOS traffic rate in a mobile communication system includes calculating a total sum of traffic rates based on a channel change and a total sum of sustained traffic rates; calculating a weighted traffic rate using the traffic rate based on the channel change and the sustained traffic rate when the sustained traffic rate does not meet the QoS traffic rate; and determining a service priority using the weighted traffic rate. Therefore, the minimum reserved traffic rate and the maximum sustained traffic rate can be assured.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: July 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byung-Chan Ahn, Jang-Won Park, Young-Soon Lee, Eun-Jin Lee, Soo-Yeul Oh
  • Publication number: 20110111488
    Abstract: Disclosed herein is a biosensor, in which sensing electrodes are formed on an upper insulating substrate and a lower insulating substrate such that, using the sensing electrodes, a measuring device can determine whether a sample (e.g., blood) injected through a sample injection port is completely filled in a sample path and determine a time point at which the sample is injected and a time point at which the sample is completely filled. Therefore, it is possible to estimate the flow characteristics of the sample and the flow rate and use the estimated values to correct the measurement result, thus obtaining a more accurate measurement result.
    Type: Application
    Filed: May 20, 2009
    Publication date: May 12, 2011
    Applicant: ALL MEDICUS CO., LTD.
    Inventors: Yon Chan Ahn, Yong Bok Choi, Mi Suk Park
  • Patent number: 7781102
    Abstract: Electrodes comprising an alkali metal, for example, lithium, alloyed with nanostructured materials of formula SizGe(z-1), where 0<z?1; formula SizGe(z-1), where 0<z<1; and/or germanium exhibit a combination of improved capacities, cycle lives, and/or cycling rates compared with similar electrodes made from graphite. These electrodes are useful as anodes for secondary electrochemical cells, for example, batteries and electrochemical supercapacitors.
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: August 24, 2010
    Assignees: California Institute of Technology, Centre National de la Recherche Scientifique (C.N.R.S.)
    Inventors: Jason A. Graetz, Brent T. Fultz, Channing Ahn, Rachid Yazami
  • Patent number: 7778217
    Abstract: An uplink scheduling system and method in a wireless broadband internet communication system includes calculating priorities of mobile stations (MSs) taking into account headroom size indicating transmission power additionally available for each of the MSs; and determining a transmission format of an MS selected to be preferentially allocated a slot as a result of the priority calculation, taking into account headroom size reported by the selected MS and a margin determined depending on a variation in channel state between the selected MS and a base station (BS).
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: August 17, 2010
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Young-Soon Lee, Byung-Chan Ahn, Il-Jin Youn, Jang-Won Park