Patents by Inventor Yoo Jeong Hyun
Yoo Jeong Hyun 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: 8320768Abstract: A system and method for continuing a communication link while maintaining visibility in visible light communication. A frame is transmitted by a sender for establishing a communication link before data transmission to a receiver by a sender. A receiver sends a response frame that reports on establishment of the communication link prior to data transmission by the sender. A data frame containing information is transmitted by the sender to the receiver. An acknowledgment frame is transmitted to the sender in response to the data frame. A disconnect frame is transmitted by the sender which is acknowledged by the receiver. A visible sequence is transmitted during a time period when the sender and the receiver do not transmit respective frames for communication to maintain visibility between two devices that may be communicating otherwise by, for example, infrared communication.Type: GrantFiled: July 7, 2008Date of Patent: November 27, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Jae Shin, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun, legal representative
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Patent number: 8204383Abstract: A wireless communication interface for a portable wireless terminal and a system for wirelessly communicating by a portable wireless terminal with another device via a free space. The interface facilitates aligning the portable wireless device with another devices for improved communication. The interface including: a light source for generating a data-modulated visible light signal and outputting the visible light signal to the free space; an optical detector for generating an electrical signal by photoelectrically converting the visible light signal input from the free space, and for outputting the electrical signal. A demodulation unit demodulates the electrical signal input from the optical detector, and outputs a data signal.Type: GrantFiled: October 30, 2007Date of Patent: June 19, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Jae Shin, Dae-Kwang Jung, Hong-Seok Shin, Hyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun, legal representative
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Patent number: 8019230Abstract: A method of providing a visible light communication in a data link layer of a visible light communication system adopting an infrared communication link connection protocol includes: broadcasting a discovery exchange station identification (D-XID) frame; generating a visible frame to provide a visibility to a link for a specified waiting time period for responding to the broadcast D-XID frame; exchanging a set normal response mode (SNRM) frame and an unnumbered acknowledgement (UA) frame for requesting a link setting between the transmitting and receiving terminals; generating visible frames for a waiting time for receiving the SNRM frame and the UA frame; exchanging an information transfer frame (I-frame) and a receive ready (RR) frame, which is a response to the I-frame, between the transmitting and receiving terminals; and generating visible frames for a specified waiting period for receiving the I-frame and the RR frame.Type: GrantFiled: July 25, 2008Date of Patent: September 13, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-Seok Choi, Dae-Kwang Jung, Yun-Je Oh, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun, legal representative
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Patent number: 8005366Abstract: A reconnection method and device for a peripheral interface using VLC provide a protocol for when a communication link between a primary device and a secondary device is disconnected. The primary device generates an R-XID message including reconnection information and a warning indication signal indicating the disconnection. The secondary device aligns the communication link with the primary device using the warning indication signal, receives the R-XID message from the primary device by the secondary device, and transmits an R-XID response message for the R-XID message to the primary device.Type: GrantFiled: July 8, 2008Date of Patent: August 23, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hong-Seok Shin, Dae-Kwang Jung, Jeong-Seok Choi, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun, legal representative
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Patent number: 7663501Abstract: An apparatus and method for controlling the emitted color of visible light according to the current communication state in a visible light communication (VLC) device. The method includes storing one or more communication states and emitting colors that are correspondingly matched to the one or more communication states to indicate each of the various communication states. The VLC also checks, which can be based upon selection of a VLC mode, the current communication state and an emits a color that corresponds to the current communication state and emits the checked color of light to provide a visible light signal that indicates communication status to a user.Type: GrantFiled: October 22, 2007Date of Patent: February 16, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Yoo Jeong Hyun, Seong Hoon Hyun, legal representative, Yun-Je Oh, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park
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Publication number: 20090196622Abstract: A reconnection method and device for a peripheral interface using VLC provide a protocol for when a communication link between a primary device and a secondary device is disconnected. The primary device generates an R-XID message including reconnection information and a warning indication signal indicating the disconnection. The secondary device aligns the communication link with the primary device using the warning indication signal, receives the R-XID message from the primary device by the secondary device, and transmits an R-XID response message for the R-XID message to the primary device.Type: ApplicationFiled: July 8, 2008Publication date: August 6, 2009Inventors: Hong-Seok Shin, Dae-Kwang Jung, Jeong-Seok Choi, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun
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Publication number: 20090185802Abstract: A method for generating a visible signal for a data transmission frame in a visible-light communication system includes: receiving specific data constituted by a plurality of frames from a sender; checking and converting a received signal strength indication (RSSI) signal measured from the sender; whenever each frame of the specific data is consecutively received, checking the converted RSSI, determining a level of a visible signal for distinctively displaying a state of a corresponding communication channel, and transmitting the level of the visible signal to the sender; and when reception of the specific data has finished, transmitting a corresponding response message to the sender, according to whether the specific data has been successfully received.Type: ApplicationFiled: July 10, 2008Publication date: July 23, 2009Inventors: Jeong-Seok Choi, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun
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Publication number: 20090028558Abstract: A method of providing a visible light communication in a data link layer of a visible light communication system adopting an infrared communication link connection protocol includes: broadcasting a discovery exchange station identification (D-XID) frame; generating a visible frame to provide a visibility to a link for a specified waiting time period for responding to the broadcast D-XID frame; exchanging a set normal response mode (SNRM) frame and an unnumbered acknowledgement (UA) frame for requesting a link setting between the transmitting and receiving terminals; generating visible frames for a waiting time for receiving the SNRM frame and the UA frame; exchanging an information transfer frame (I-frame) and a receive ready (RR) frame, which is a response to the I-frame, between the transmitting and receiving terminals; and generating visible frames for a specified waiting period for receiving the I-frame and the RR frame.Type: ApplicationFiled: July 25, 2008Publication date: January 29, 2009Inventors: Jeong-Seok Choi, Dae-Kwang Jung, Yun-Je Oh, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun
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Publication number: 20090022496Abstract: A method and apparatus for arranging communication links in visible light communication increases the user visibility of the system. The method includes the steps of: (a) synchronizing, by a visible light communication (VLC) exchange identification (XID) frame, (b) transmission timing of a primary device and a secondary device in an allocated time slot, and securing time so as to allow the primary device and the secondary device to perform an operation required for transmitting data; (c) transmitting an XID command frame from the primary to the secondary device and (d) transmitting an XID response frame from the secondary receiving the XID command frame to the primary; and (e) filling remaining space of the allocated time slot with a visibility field so as to increase visibility of the remaining space of the allocated time slot after receiving the XID command frame or the XID response frame.Type: ApplicationFiled: July 21, 2008Publication date: January 22, 2009Inventors: Dong-Jae SHIN, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun
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Publication number: 20090010654Abstract: A system and method for continuing a communication link while maintaining visibility in visible light communication. A frame is transmitted by a sender for establishing a communication link before data transmission to a receiver by a sender. A receiver sends a response frame that reports on establishment of the communication link prior to data transmission by the sender. A data frame containing information is transmitted by the sender to the receiver. An acknowledgment frame is transmitted to the sender in response to the data frame. A disconnect frame is transmitted by the sender which is acknowledged by the receiver. A visible sequence is transmitted during a time period when the sender and the receiver do not transmit respective frames for communication to maintain visibility between two devices that may be communicating otherwise by, for example, infrared communication.Type: ApplicationFiled: July 7, 2008Publication date: January 8, 2009Inventors: Dong-Jae Shin, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun, Seong Hoon Hyun
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Publication number: 20080131140Abstract: A method for communication link connection in a data transmission between devices using visible light communication (VLC) that can provide a visible indication prior to establishing a communication link between the devices. The method includes activating a VLC mode by a first VLC apparatus in order to transmit the data; scanning other apparatuses to establish a communication link with a second VLC apparatus; requesting a communication link to the second VLC apparatus in order to transmit the data; and receiving a response, indicating whether data can be received from the second VLC apparatus, and establishing communication link connection. A user can easily recognize the visual indication before the establishment of the communication link, providing an opportunity for the user to arrange the apparatus for optimal communication distance/angle from another device, and for a status of the communication.Type: ApplicationFiled: November 29, 2007Publication date: June 5, 2008Inventors: Dong-Jae Shin, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun
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Publication number: 20080102893Abstract: A wireless communication interface for a portable wireless terminal and a system for wirelessly communicating by a portable wireless terminal with another device via a free space. The interface facilitates aligning the portable wireless device with another devices for improved communication. The interface including: a light source for generating a data-modulated visible light signal and outputting the visible light signal to the free space; an optical detector for generating an electrical signal by photoelectrically converting the visible light signal input from the free space, and for outputting the electrical signal. A demodulation unit demodulates the electrical signal input from the optical detector, and outputs a data signal.Type: ApplicationFiled: October 30, 2007Publication date: May 1, 2008Inventors: Dong-Jae Shin, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Yoo-Jeong Hyun
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Publication number: 20080094244Abstract: An apparatus and method for controlling the emitted color of visible light according to the current communication state in a visible light communication (VLC) device. The method includes storing one or more communication states and emitting colors that are correspondingly matched to the one or more communication states to indicate each of the various communication states. The VLC also checks, which can be based upon selection of a VLC mode, the current communication state and an emits a color that corresponds to the current communication state and emits the checked color of light to provide a visible light signal that indicates communication status to a user.Type: ApplicationFiled: October 22, 2007Publication date: April 24, 2008Inventors: Yun-Je Oh, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Yoo-Jeong Hyun
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Publication number: 20070189772Abstract: Provided is a hybrid Passive Optical Network (PON) using a wireless communication.Type: ApplicationFiled: November 17, 2006Publication date: August 16, 2007Inventors: Yoo-Jeong Hyun, Dong-Jae Shin, Dae-Kwang Jung
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Publication number: 20070177873Abstract: Disclosed is a hybrid PON including: a central office, remote terminal and a plurality of optical network units arranged in groups, the central office for outputting downstream optical signals, the remote node for wavelength-division-demultiplexing the downstream optical signals input from the central office, splitting the demultiplexed downstream optical signals, respectively, to generate multiple downstream optical signals, outputting the multiple downstream optical signals to optical network units of a corresponding group, generating corresponding upstream optical signals modulated into upstream subcarriers of a corresponding group input from the optical network units of the group, and outputting the generated upstream optical signals to the central office, and the optical network units for obtaining downstream subcarriers of a corresponding group from corresponding downstream optical signals input from the remote node, obtaining corresponding downstream subcarriers by filtering the downstream subcarriersType: ApplicationFiled: January 11, 2007Publication date: August 2, 2007Inventors: Yoo-Jeong Hyun, Dae-Kwang Jung