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公开(公告)号：US09813203B2
公开(公告)日：2017-11-07
申请号：US14302434
申请日：2014-06-12
发明人： Hyun Oh Oh , Jin Sam Kwak , Ju Hyung Son
CPC分类号： H04L5/0033 , H04L5/005 , H04L5/0073 , H04W84/18
摘要： Technologies are generally described for generating pilot signal patterns in a base station, such as a small-cell base station, or a self-organizing network (SON) in a mobile communication system. Example devices/systems described herein may include one or more of a storage unit, a control unit and/or a communication unit in a base station. The storage unit may be configured to store a pilot signal pattern corresponding to a power variation between a first power level and a second power level. The control unit may be coupled to the storage unit and configured to generate a pilot signal in accordance with the stored pilot signal pattern. Further, the communication unit may be coupled to the control unit and configured to transmit the generated pilot signal such that any nearby mobile stations (or user equipment) can use the signal to perform cell selection or re-selection.
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2.发明申请公开(公告)号：US20170186184A1
公开(公告)日：2017-06-29
申请号：US14980692
申请日：2015-12-28
发明人： Jin Sam Kwak , Geonjung Ko , Hyun Oh Oh , Ju Hyung Son
CPC分类号： G06T7/60 , G01B11/2513 , G06T7/521 , G06T2207/20056
摘要： Technologies are generally described for phase measuring profilometry (PMP) using structured light patterns based on orthogonal frequency division multiplexing (OFDM). In some examples, a composite structured light pattern generated using OFDM may be used to illuminate a surface of interest. The surface may reflect a phase-distorted version of the structured light pattern, and the phase-distorted structured light pattern may be processed to recover image and/or height information about the surface. In some embodiments, fast Fourier transform schemes may be used to generate the composite structured light pattern and process the phase-distorted structured light pattern.
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公开(公告)号：US20180224522A1
公开(公告)日：2018-08-09
申请号：US15947243
申请日：2018-04-06
发明人： Jin Sam Kwak , Hyun Oh Oh , Ju Hyung Son
CPC分类号： G01S5/10 , G01S1/08 , G01S5/02 , G01S5/0215 , H04W64/00
摘要： Technologies are generally described for identifying whether a propagation path between a mobile device and an access point is line-of-sight. In some examples, a method performed under control of a mobile device may include receiving, from an access point, a first signal transmitted at a first frequency band; receiving, from the access point, a second signal transmitted at a second frequency band; measuring a difference value between propagation properties of the first signal and the second signal; and identifying whether a propagation path between the mobile device and the access point is line-of-sight or non-line-of-sight based at least in part on the difference value.
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公开(公告)号：US09646699B2
公开(公告)日：2017-05-09
申请号：US14404002
申请日：2014-04-30
发明人： Hyun Oh Oh , Jin Sam Kwak , Ju Hyung Son
CPC分类号： G11C16/10 , G06F11/1076 , G11C11/56 , G11C11/5628 , G11C11/5642 , G11C16/26 , G11C16/349 , G11C29/50004 , G11C29/52
摘要： Technologies are generally described that relate to differential writing for life extension of portions of non-volatile memory that have a likelihood of error that satisfies a defined condition. An example method may include determining that at least two components of a memory device satisfy a defined condition; writing to a first component of the at least two components with first data having a first representation. The method may also include writing to a second component of the at least two components with second data having a second representation different from the first representation, wherein the second data comprises at least a portion that is bit inverted relative to the first data.
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公开(公告)号：US10323452B2
公开(公告)日：2019-06-18
申请号：US15218160
申请日：2016-07-25
发明人： Jin Sam Kwak , Geonjung Ko , Min Seok Noh , Hyun Oh Oh , Ju Hyung Son
摘要： Technologies are generally described for activation of actuators based on sensed user characteristics, such as orientation. In some examples, an access control system may be configured to activate an actuator upon determining that an activation device is both in proximity to and has a similar orientation to the actuator. The access control system may be configured to determine orientation similarity by determining an orientation associated with the activation device, determining an orientation associated with the actuator, and comparing a difference between the two orientations to an activation threshold. The actuator may be associated with an entryway such as a building doorway, a room doorway, or a vehicle door, or may be associated with a container such as a safe or vehicle trunk.
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公开(公告)号：US09971016B2
公开(公告)日：2018-05-15
申请号：US14785650
申请日：2014-04-30
发明人： Jin Sam Kwak , Hyun Oh Oh , Ju Hyung Son
CPC分类号： G01S5/10 , G01S1/08 , G01S5/02 , G01S5/0215 , H04W64/00
摘要： Technologies are generally described for identifying whether a propagation path between a mobile device and an access point is line-of-sight. In some examples, a method performed under control of a mobile device may include receiving, from an access point, a first signal transmitted at a first frequency band; receiving, from the access point, a second signal transmitted at a second frequency band; measuring a difference value between propagation properties of the first signal and the second signal; and identifying whether a propagation path between the mobile device and the access point is line-of-sight or non-line-of-sight based at least in part on the difference value.
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公开(公告)号：US09730170B2
公开(公告)日：2017-08-08
申请号：US14298973
申请日：2014-06-09
发明人： Jin Sam Kwak , Hyun oh Oh , Ju Hyung Son
CPC分类号： H04W56/001 , H04W16/32 , H04W36/04 , H04W36/165 , H04W48/16 , H04W84/12
摘要： Technologies generally described herein relate to connection of a mobile device to an access point in a wireless communication system. Example mobile devices may include a receiver, a decoder and a data communication module. The receiver may be configured to receive a downlink synchronization signal from an access point through a cellular band. In some embodiments, the downlink synchronization signal is synchronized based on a signal from a base station. The decoder may be coupled to the receiver and configured to decode the received downlink synchronization signal to obtain information regarding the access point. The data communication module may be coupled to the decoder and configured to connect to the access point based, at least in part, on the obtained information regarding the access point.
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公开(公告)号：US10234931B2
公开(公告)日：2019-03-19
申请号：US15308611
申请日：2014-05-05
发明人： Hyun Oh Oh , Jin Sam Kwak , Ju Hyung Son
IPC分类号： G06F1/32 , G11C5/14 , G11C14/00 , H02J7/00 , G11C11/4074 , H02J7/34 , G06F1/3287 , G06F1/3234
摘要： Technologies are generally described for selectively charging a capacitor coupled to a memory. Example electronic devices described herein may include a memory; a capacitor coupled to the memory; a power supply configured to supply power at least to the capacitor; a switch coupled between the power supply and the capacitor; and a switch controller coupled to the switch and configured to: determine whether the electronic device is in a safety mode or in a normal mode, and control an operation of the switch, based on the determination. So, the supply of the power from the power supply to the capacitor is selectively controlled.
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公开(公告)号：US10104497B2
公开(公告)日：2018-10-16
申请号：US15128957
申请日：2014-03-25
发明人： Jin Sam Kwak , Hyun Oh Oh , Ju Hyung Son
摘要： Technologies are generally described for detecting proximity of a client device to a base station in a wireless communication system. Example base station may include a proximity detector and an operation mode controller. The proximity detector may analyze a property of a signal transmitted by a client device to detect an envelope of the signal including a buzz-type waveform. If the envelope of the signal is determined to include a buzz-type waveform, the client device is determined to be within communication range of the base station. Further, the operation mode controller may convert a current operation mode of the base station to a particular operation mode that enables the base station to support communication by the client device. In some embodiments, the buzz-type waveform may be a waveform of an uplink control signal that is transmitted by the client device when it is not actively engaged in communication.
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公开(公告)号：US10295649B2
公开(公告)日：2019-05-21
申请号：US15947243
申请日：2018-04-06
发明人： Jin Sam Kwak , Hyun Oh Oh , Ju Hyung Son
摘要： Technologies are generally described for identifying whether a propagation path between a mobile device and an access point is line-of-sight. In some examples, a method performed under control of a mobile device may include receiving, from an access point, a first signal transmitted at a first frequency band; receiving, from the access point, a second signal transmitted at a second frequency band; measuring a difference value between propagation properties of the first signal and the second signal; and identifying whether a propagation path between the mobile device and the access point is line-of-sight or non-line-of-sight based at least in part on the difference value.
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