Patents by Inventor Jeong-Seok Choi
Jeong-Seok Choi 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: 8995840Abstract: An apparatus and a method for providing synchronized data by using visible light communication includes, receiving a synchronization channel from a mobile communication base station using a specific mobile communication network, by a Light Emitting Diode (LED) lighting; analyzing the received synchronization channel, and extracting a synchronization signal for synchronizing the LED lighting with at least one LED lighting adjacent to the LED lighting; selecting a specific time slot of the synchronization signal based on IDentifications (IDs) of the LED lightings; and including a data frame of the LED lighting in the specific time slot, and transmitting the specific time slot, which includes the data frame of the LED lighting, to a mobile terminal.Type: GrantFiled: January 10, 2011Date of Patent: March 31, 2015Assignee: Samsung Electronics Co., LtdInventors: Hong-Seok Shin, Dae-Kwang Jung, Jeong-Seok Choi, Kyung-Woo Lee, Sung-Bum Park, Ki-Uk Song
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Patent number: 8982037Abstract: A display device for providing additional information using Visible Light Communication (VLC), including a decoder for dividing an input signal into a video signal and a data signal including additional information on at least one object included in an image output through the video signal; a display; a VLC controller for receiving the data signal from the decoder and encoding the data signal in accordance with a VLC protocol to output the data signal as a visible light signal through the VLC; light source blocks, which include light sources, back light the display, and output the data signal encoded in accordance with the VLC; and a control unit for controlling the encoded data signal including the additional information on the object, to be output as the visible light signal through a light source block at a position corresponding to the object from among the light source blocks.Type: GrantFiled: September 15, 2010Date of Patent: March 17, 2015Assignee: Samsung Electronics Co., LtdInventors: Kyung-Woo Lee, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Sung-Bum Park, Ki-Uk Song
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Patent number: 8866836Abstract: A data communication apparatus based on digital image processing includes a display that displays a color block array including color blocks corresponding to transmission data. The data communication apparatus also includes a camera that captures an image of a color block array displayed on a display of a transmitting side, and a storage that stores a code table including information about colors mapped to data values. The data communication apparatus further includes a Digital Signal Processor (DSP) that creates a color block array by converting transmission data to color blocks according to the code table during data transmission, identifies the color block array in the image captured by the camera, detects colors of color blocks in the color block array, and extracts data values corresponding to the detected colors during data reception.Type: GrantFiled: October 29, 2009Date of Patent: October 21, 2014Assignee: Samsung Electronics Co., LtdInventors: Kyung-Woo Lee, Yun-Je Oh, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Dong-Jae Shin, Sung-Bum Park
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Publication number: 20140049852Abstract: A display device including a pattern includes a plurality of color filters corresponding to one or more subpixels forming pixels of the display device, and a black matrix formed between the plurality of color filters, wherein the one or more subpixels include one or more marks representing absolute positions of the respective pixels of the display device, and each of the subpixels includes symmetric marks at a left side and a right side of the subpixel. Accordingly, the quantity of light emitted from each of Red, Green, and Blue subpixels is uniform, and the generated pattern has marks that are positioned where the pattern noise is minimized, is provided, thereby providing an improved image quality display device.Type: ApplicationFiled: August 16, 2013Publication date: February 20, 2014Applicant: Samsung Electronics Co., Ltd.Inventors: Jeong-Seok CHOI, In-Kuk Yun, Jeong-Seok Lee
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Patent number: 8601183Abstract: An apparatus and method for transmitting and receiving data in one-to-one communication are provided. A first buffer for temporarily storing file data and a second buffer for temporarily storing message data are connected to a data transmitter for transmitting data and a data receiver for receiving data, respectively or vice versa, according to a request for data transmission or reception. The buffer for storing file data and the buffer for storing message data are differently constructed, thereby reducing the waste of memories of the buffers and achieving the miniaturization and high-speed data transmission of a portable terminal device.Type: GrantFiled: September 17, 2010Date of Patent: December 3, 2013Assignee: Samsung Electronics Co., LtdInventors: Jeong-Seok Choi, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Ki-Uk Song
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Patent number: 8594509Abstract: 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: GrantFiled: July 21, 2008Date of Patent: November 26, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-Jae Shin, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Seong Hoon Hyun
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Patent number: 8510033Abstract: A method and apparatus for performing a navigation service in a mobile terminal is provided. Map information and an IDentification (ID) of an information spot, which is connected to a map server, are received from the information spot. A current position is determined. The map information and the current position are displayed A destination input by a user is received. An optimal path from the current position to the destination is calculated and displayed by using the map information. When the mobile terminal receives an ID of a general spot from the general spot, a current position of the mobile terminal is re-determined. When the re-determined current position is on the optimal path, the optimal path is updated and the updated optimal path from the re-determined current position to the destination is displayed.Type: GrantFiled: December 23, 2010Date of Patent: August 13, 2013Assignee: Samsung Electronics Co., LtdInventors: Sung-Bum Park, Dae-Kwang Jung, Hong-Seok Shin, Jeong-Seok Choi, Kyung-Woo Lee, Ki-Uk Song
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Patent number: 8463134Abstract: Provided is an apparatus and method for transmitting and receiving data in a visible light communication system, the apparatus including a visible light communication (VLC) transceiver for converting a visible light signal received from a counterpart into an electrical signal and outputting the electrical signal, by using a light receiving device during a reception operation, and converting an electrical signal containing information into a visible light signal and transmitting the visible light signal to the counterpart, by using a light emitting device during a transmission operation, a VLC controller comprising a visible frame engine (VFE) for generating a visible frame and outputting the visible frame to the VLC transceiver, in which the VFE generates the visible frame for transmission to a counterpart during non-transmission of respective frames for communication at a sender and a receiver in order to provide visibility to a communication link, and a host controller for controlling the VLC controller andType: GrantFiled: February 20, 2009Date of Patent: June 11, 2013Assignee: Samsung Electronics Co., LtdInventors: Jeong-Seok Choi, Yun-Je Oh, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park
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Patent number: 8452188Abstract: A Visible Light Communication (VLC) method in a VLC terminal, in which the VLC terminal requests initial access to an Access Point (AP) on a selected mini-slot among a plurality of mini-slots constituting a control slot, based on control information in a frame, sends an association request to the AP on an allocated uplink time slot, if the uplink time slot allocated to correspond to the selected mini-slot exists in control information in a next frame, and transmits data at a data rate appointed to the VLC terminal included in control information in the current frame using an association Identifier (ID) included in a response received in reply to the association request and the allocated uplink time slot.Type: GrantFiled: February 17, 2010Date of Patent: May 28, 2013Assignee: Samsung Electronics Co., LtdInventors: Hong-Seok Shin, Dae-Kwang Jung, Jeong-Seok Choi, Kyung-Woo Lee, Sung-Bum Park, Jae-Hun Cho
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Patent number: 8433207Abstract: Disclosed are an optical signal concentrator and an optical receiver for wireless optical communication. The concentrator includes a diffusion sheet and a light guide plate positioned below the diffusion sheet for guiding diffused optical signals perpendicularly to the incident direction the diffused optical signals, the light guide plate being formed with at least one concentric circle pattern facing the diffusion sheet. The receiver includes an optical signal concentrator including a diffusion sheet, a light guide plate positioned below the diffusion sheet for guiding the optical signals perpendicularly to the incident direction the diffused optical signals, one or more optical detectors for detecting light projected to the side of the light guide plate, and a reflection plate for reflecting light incident to the light guide plate.Type: GrantFiled: October 21, 2009Date of Patent: April 30, 2013Assignee: Samsung Electronics Co., LtdInventors: Dong-Jae Shin, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Basha Shaik
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Patent number: 8358935Abstract: 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: GrantFiled: July 10, 2008Date of Patent: January 22, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Jeong-Seok Choi, Dae-Kwang Jung, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin, Sung-Bum Park, Seong Hoon Hyun
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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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Publication number: 20120264489Abstract: A portable communication device having a flexible display unit to form a predetermined curvature or be unfolded includes a first housing, second and third housings rotatably coupled to both ends of the first housing, first and second hinge modules provided between the first, second, and third housings to enable the second and third housings to rotate. The flexible display unit is provided on the first, second, and third housings to form a curvature or be unfolded on the first, second, and third housings through rotation together with the second and third housings, first and second curvature space portions formed between the first, second, and third housings allow formation of the curvature of the flexible display unit.Type: ApplicationFiled: April 16, 2012Publication date: October 18, 2012Applicant: Samsung Electronics Co., Ltd.Inventors: Jeong-Seok CHOI, Byung-Jik Kim, Young-Min Lee, Kang-Ho Byun
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Patent number: 8199817Abstract: A method and apparatus for error concealment in decoding of a moving picture. The method includes the steps of determining an erroneous macro block in a present frame when the moving picture is decoded, finding a first macro block having a highest similarity to the erroneous macro block and a second macro block having a next highest similarity to the erroneous block in a previous frame by comparing adjacent pixels of respective blocks in the previous frame with adjacent pixels of the erroneous block in the present frame; and replacing the erroneous block by using an average between the found macro blocks having the highest similarity and the second highest similarity to thereby conceal the erroneous macro block. The apparatus includes a parser, an entropy decoder, an inverse quantizer, an inverse converter, and a concealment unit that uses motion compensation from a previous frame to correct a macro block in a current frame.Type: GrantFiled: September 18, 2007Date of Patent: June 12, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Yong-Deok Kim, Young-O Park, Kwang-Pyo Choi, Jeong-Seok Choi, Young-Hun Joo, Kwan-Woong Song, Chang-Su Kim
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Patent number: 8169967Abstract: A system and method for performing a handover of a mobile station (MS) by considering Quality of Service (QoS) in a broadband mobile communication system. The method can include the steps of: receiving information about one or more neighbor base stations and reception strengths for the neighbor base stations from a Serving Radio Access System (RAS) currently communicating with the MS; extracting a value of a specific field from the received information about the neighbor base stations; combining the extracted value of the specific field with the reception strengths to thereby obtain combined values, and selecting a maximum value among the combined values; and transmitting a handover (handoff) request message to a base station corresponding to the selected maximum value. The system includes an MS that analyzes information about neighbor stations received in a Mobile Neighbor Base-station Advertisement (MOB_NBR_ADV) message to select a target RAS.Type: GrantFiled: March 18, 2008Date of Patent: May 1, 2012Assignees: Samsung Electronics Co., Ltd, Korea University Industrial & Academic Collaboration FoundationInventors: Chang-Hyun Lee, Sung-Jea Ko, Yun-Je Oh, Tae-Sung Park, Jeong-Rok Park, Jeong-Seok Choi, Young-Hun Joo, Hye-Soo Kim, Kyung-Ho Chae
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Patent number: 8117006Abstract: Provided is a method of measuring the position of a portable terminal, comprising detecting indoor illuminating light, and outputting an electric signal corresponding to the detected indoor illuminating light, obtaining a plurality of data frames from the output electrical signal, and calculating a position of the portable terminal based on information regarding the position of a corresponding reference light source included in each data frame and an identifier corresponding to the reference light source included in said each frame and a reception time of said each data frame.Type: GrantFiled: January 14, 2010Date of Patent: February 14, 2012Assignee: Samsung Electronics Co., LtdInventors: Kyung-Woo Lee, Yun-Je Oh, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Sung-Bum Park
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Patent number: 8059112Abstract: Provided is a method for broadcasting visible light information in visible light communication. The method includes determining a time interval for a simultaneous signal and a time interval for an individual signal of information to be displayed on a display device; simultaneously modulating output signals of three Red-Green-Blue (RGB) Light Emitting Diodes (LEDs) making up one pixel, and transferring the modulated information to the display device; individually modulating output signals of the three RGB LEDs and transferring the modulated information to the display device; and displaying the modulated information for any selected one of the time interval for the simultaneous signal and the time interval for the individual signal.Type: GrantFiled: February 23, 2009Date of Patent: November 15, 2011Assignee: Samsung Electronics Co., LtdInventors: Sung-Bum Park, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Dong-Jae Shin
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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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Publication number: 20110176803Abstract: A system for performing indoor positioning using a Light Emitting Diode (LED) lighting unit is provided. The system includes the LED lighting unit for determining whether transmission packet data exists in a frame to be transmitted, modulating the transmission packet data in accordance with a predetermined method in order to maintain a uniform brightness of the LED lighting unit when the transmission packet data exists, and transmitting the frame including the modulated transmission packet data. The system also includes a mobile terminal for receiving the frame, demodulating the modulated transmission packet data to determine the transmission packet data, and performing indoor positioning by using the demodulated transmission packet data and information included in the frame.Type: ApplicationFiled: January 18, 2011Publication date: July 21, 2011Applicant: Samsung Electronics Co., Ltd.Inventors: Ki-Uk Song, Dae-Kwang Jung, Jeong-Seok Choi, Hong-Seok Shin, Kyung-Woo Lee, Sung-Bum Park, Jae-Gwang Shim