Samsung Electronics Co., Ltd.

Sun-Gi Gu

Eun-Tae Won

Jae-Seung Son

Tae-Han Bae

Do-Young Kim

Young-Kwon Cho

Seung-Hoon Park

Noh-Gyoung Kang

Gyu-Bong Oh

Chi-Hong Cho

Clint F Chaplin

Do-young Kim

Hwa-Joong Kim

Provided is an apparatus and method for searching for address book information. To this end, the present invention, upon receiving a search request message for searching address book information from a client, checks a search preference, searches for the address book information based on the checked search preference, applies a priority to the found address book information to create a final search result, creates a response message including the created final search result, forwards the response message to the client, and updates the preset search preference based on the final search result, thereby providing a search result optimized for a user.

Apparatus and method for searching for address book information

Provided is an apparatus and method for setting disposition with respect to document information share. To this end, once a transmission-side server forwards a document forward request message including a document disposition rule with respect to a document to a reception-side server, the reception-side server checks a preference with respect to the document forward request message by using a preset user preference to notify a document change, and stores document data together with a disposition rule regarding the document data, such that efficient management and disclosure of private information forwarded to a user become possible and thus a CAB service can be easily and rapidly provided according to user's selection.

Apparatus and method for setting disposition with respect to document share

The present invention relates to a position compensation device using visible light communication and a method thereof. To this end, the present invention receives a visible light signal which includes lighting position information from a lighting device to extract the lighting position information from the received visible light signal, and calculates a compensated position of a position compensation device by using the extracted lighting position information if a request for position compensation exists, thereby providing an exact position of a user indoors.

Position compensation device using visible light communication and method thereof

Proposed is a method for providing additional information to a mobile communication terminal by means of visible light communication in an information display device having an LED backlight unit. For this purpose, the method of the present invention comprises the steps of: receiving, from a mobile communication terminal, a request for additional information on an object in a content image when a content image is being displayed on a screen of an information display device; determining whether or not there exists additional information corresponding to the request; and controlling, if said additional information does exist, the light emission of the LED backlight unit so as to transmit said additional information in the form of visible light to the mobile communication terminal. Further, according to the present invention, it is possible to provide various additional information corresponding to the request from the mobile communication terminal.

Visible light communication method in an information display device having an LED backlight unit, and information display device for the method

Methods and apparatuses are provided for operating multi-type beacons by a first terminal connected with a second terminal through wireless communication. The first terminal receives, from the second terminal, information required for allocating a beacon type. The first terminal selects a beacon type for the second terminal from predetermined beacon types based on at least one variable in the information. The at least one variable includes at least one of a channel condition of a communication link between the first terminal and the second terminal, a traffic period of the communication link, and a security level of transmission and reception data. Each variable includes a priority. The first terminal allocates a beacon to the second terminal based on the priority of each variable. The beacon has the beacon type. The beacon allocated to the second terminal is transmitted from the first terminal to the second terminal.

Method for operating multi-type beacons

Disclosed is a control method of a communication system including at least one sensor that a user wears, a wireless communication apparatus and a coordinator. The control method of the communication system includes: in the coordinator, receiving a proxy authority request for proxy with respect to the at least one sensor and the coordinator from the wireless communication apparatus, and granting the proxy authority to the wireless communication apparatus; in the wireless communication apparatus, creating a user identifier corresponding to the user; in the wireless communication apparatus, searching for the at least one sensor that the user wears, and forming a pairing with the at least one found sensor; in the wireless communication apparatus, making a request to the at least one found sensor for association information for the association with the coordinator and the sensor, and receiving the association information; in the wireless communication apparatus, making a request to the coordinator for association proxy for an association between the at least one found sensor and the coordinator, and receiving the association proxy in response to the request; and in the coordinator, requesting data by forming an association with the at least one found sensor, and receiving data corresponding to the data request.

Proxy communication system and control method thereof in ban environment

The present disclosure relates to an apparatus and a method for identifying location information by using visible light communication and a GPS (Global Positioning System). The apparatus includes: a GPS signal processor for receiving a GPS signal, and identifying location information; a visible light signal processor for receiving a visible light signal, and identifying location information; a GPS/visible light selector for identifying strengths of signals provided by the GPS signal processor and the visible light signal processor, and controlling an operation of the GPS signal processor and an operation of the visible light signal processor; and a location information output unit for outputting the at least one location information provided by the GPS signal processor and the visible light signal processor.

Apparatus and method for identifying location information using visible light communication and GPS

Methods and apparatus are provided for measuring a position of a mobile terminal. A first position is calculated by using a GPS signal. A visible light communication mode of the mobile terminal is activated, when the first position exceeds a predetermined error range. Visible light communication device position information is received. A third position is calculated by using a second position, which corresponds to a position prior to the first position, and the visible light communication device position information.

Apparatus and method for measuring position using GPS and visible light communication

Provided is a method for operating multi-type beacons by a first terminal connected with at least one second terminal through short-range communication. The method includes checking at least one variable related to the second terminal, allocating one selected from a plurality of beacons having different characteristics to the second terminal, taking into account the checked variable, and transmitting the beacon allocated to the second terminal.

A method and device for determining an output of a visible frame in at Visible Light Communication (VLC) device are provided. A first VLC device determines whether to permit a second VLC device to generate visible frames, and transmits, to the second VLC device, visible frame information indicating whether the second VLC device is permitted to generate the visible frames.

Method and device for determining output of visible frame in visible light communication system

A method and apparatus for supporting mobility of a mobile terminal in a Visible Light Communication (VLC) system. The method includes activating only necessary light sources for VLC considering the mobility of the mobile terminal, instead of using total light sources for VLC. Consequently, power consumption can be significantly reduced.

Apparatus and method for supporting mobility of a mobile terminal that performs visible light communication

A method and apparatus for supporting mobility of a mobile terminal in a Visible Light Communication (VLC) system. The method includes searching, by the VLC device, for a first mobile terminal in a plurality of cells; locating the first mobile terminal in a first cell among the plurality of cells; exchanging data with the first mobile using a light source of the first cell; determining whether a response signal corresponding to data reception is received from the first mobile terminal in the first cell; searching for the first mobile terminal in a neighboring cell of the first cell, if the response signal is not received; and determining the neighboring cell as a second cell for visible light activation, if the first mobile terminal is located in the neighboring cell.

A visible light communication method and terminal are provided for communicating with a visible light coordinator which discriminates between at least one communication area cell that includes at least one light source and a boundary area positioned between the communication area cell and another communication area cell adjacent to the communication cell area, and which provides time division visible light communication. Data of the visible light communication terminal is received from the visible light coordinator using a first time slot in a first communication area cell determined according to a position of the visible light communication terminal. The visible light coordinator is communicated with using a second time slot assigned from the visible light coordinator, when the visible light communication terminal is located in a boundary area of the first communication area cell. The second time slot has not been assigned to the visible light communication terminal.

Visible light communication method and apparatus

A method and an apparatus are provided for guaranteeing terminal mobility in a time division visible light communication system. In resource assignment in a position where the visible light communication terminal changes a cell, the terminal is assigned a resource to be used in a next cell in a cell boundary area from a communication coordinator, thereby guaranteeing the continuous mobility. The visible light communication system informs the terminal of cell boundary notice information for easily informing the terminal of the cell definition so that the terminal can recognize that the terminal is currently located in the cell boundary and is necessary to change the resource.

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Yongin-si, South Korea

Sun-Gi Gu