# US 8,787,829 B2 · Method and device for establishing communication link by selecting object from screen > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,787,829 B2 - Document ID: US8787829B2 - Status: Granted - Kind: B2 - Application number: 12/951,422 - Filed: 2010-11-22 - Published: 2011-05-26 - Granted: 2014-07-22 - Earliest claimed: 2009-11-25 - Assignees: Electronics and Telecommunications Research Instittue - Applicants: Seung Chan Bang; Young Hoon Kim; Don Sung Oh; Il Gyu Kim - Inventors: Seung Chan Bang; Young Hoon Kim; Don Sung Oh; Il Gyu Kim - Web page: https://patentgrep.com/patent/US8787829B2 ## CPC - H04M 1/72412: using two-way short-range wireless interfaces - H04W 4/029: Location-based management or tracking services - H04M 2250/52: including functional features of a camera - H04W 4/02: Services making use of location information - H04W 76/14: Direct-mode setup - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method for establishing a communication link of a first communication device includes: selecting a second communication device for establishing a communication link on a screen of the first communication device; transmitting a request for a communication link to the selected second communication device; receiving a communication link response from the second communication device; and establishing a communication link between the first communication device and the second communication device. ## Claims ### Claim 1 A method for establishing a communication link of a first communication device, the method comprising: selecting an image of a second communication device from a screen of the first communication device; calculating an actual position of the second communication device based on a position of the image of the second communication device within the screen of the first communication device; transmitting a request for a communication link including information regarding the establishment of a link on the basis of the first communication device required for establishing a communication link to the selected second communication device, wherein the first communication device comprises a plurality of antennas, and wherein the transmitting the request comprises transmitting the request toward the second communication device through beamforming using the plurality of antennas and the calculated actual position of the second communication device; receiving a communication link response including information regarding the establishment of a communication link on the basis of the second communication device required for establishing a communication link from the second communication device; and establishing a communication link between the first communication device and the second communication device by using the information regarding the establishment of a link on the basis of the first communication device and the information regarding the establishment of a link on the basis of the second communication device, wherein the information regarding the establishment of a link on the basis of the first communication device comprises at least one of absolute space coordinates of the first communication device or relative space coordinates between the first communication device and the second communication device. ### Claim 2 (depends on 1) The method of claim 1, wherein the link establishment information comprises at least one of an image of the first communication device, an image of the second communication device, or an image of the second communication device extracted from the screen. ### Claim 3 (depends on 1) The method of claim 1, wherein the information regarding the establishment of a link comprises a specific identifier which is at least one of a number, a barcode, a name, or an address that uniquely expresses the identity of the first communication device. ### Claim 4 (depends on 1) The method of claim 1, wherein, in the receiving of the communication link response, at least one communication link response is received, and the communication link response from the second communication device is extracted from the at least one communication link response. ### Claim 5 (depends on 4) The method of claim 4, wherein, in the extracting of the communication link response from the second communication device from the at least one communication link response, at least one of the information regarding the establishment of a link on the basis of the first communication device or the information regarding the establishment of a link on the basis of the second communication device included in the communication link response is used. ### Claim 6 (depends on 1) The method of claim 1, wherein, in the receiving of the communication link response, a reception direction of the communication link response from the second communication device to the first communication device is recognized. ### Claim 7 (depends on 1) The method of claim 1, wherein the calculating the actual position of the second communication device comprises calculating the actual position of the second communication device based on the position of the image of the second communication device within the screen of the first communication device, a size of the image of the second communication device within the screen of the first communication device, and an orientation of the image of the second communication device from a center of the first communication device. ### Claim 8 A method for establishing a communication link of a second communication device, the method comprising: receiving a request for a communication link including information regarding the establishment of a link on the basis of a first communication device required for establishing a communication link from the first communication device; transmitting a communication link response including information regarding the establishment of a link on the basis of the second communication device required for establishing a communication link to the first communication device, wherein the second communication device comprises a plurality of antennas, and wherein the transmitting the communication link response comprises transmitting the communication link response toward the first communication device through beamforming using the plurality of antennas; and establishing a communication link between the second communication device and the first communication device by using the information regarding the establishment of a link on the basis of the second communication device and the information regarding the establishment of a link on the basis of the first communication device, wherein the information regarding the establishment of a link on the basis of the second communication device comprises at least one of absolute space coordinates of the second communication device or relative space coordinates between the first communication device and the second communication device, wherein the first communication device comprises a first plurality of antennas, wherein the request is received by the second communication device as a result of the first communication device transmitting the request toward the second communication device through beamforming using the first plurality of antennas and an actual position of the second communication device, wherein the actual position of the second communication device is calculated by the first communication device based on a position of an image of the second communication device within a screen of the first communication device. ### Claim 9 (depends on 8) The method of claim 8, wherein the link establishment information comprises at least one of an image of the first communication device, an image of the second communication device, or an image of the second communication device extracted from the screen. ### Claim 10 (depends on 8) The method of claim 8, wherein the information regarding the establishment of a link comprises a specific identifier which is at least one of a number, a barcode, a name, or an address that may uniquely express the identity of the first communication device. ### Claim 11 (depends on 8) The method of claim 8, wherein, in the receiving of the request for a communication link, the direction in which the request for a communication link is received from the first communication device to the second communication device is recognized. ### Claim 12 (depends on 8) The method of claim 8, wherein the actual position of the second communication device is calculated by the first communication device based on the position of the image of the second communication device within the screen of the first communication device, a size of the image of the second communication device within the screen of the first communication device, and an orientation of the image of the second communication device from a center of the first communication device. ### Claim 13 A first communication device comprising: a camera unit configured to collect an image of a second communication device; a display unit configured to display the collected image of the second communication device on a screen; a transmission unit configured to transmit a request for a communication link including information regarding the establishment of a link on the basis of the first communication device required for establishing a communication link to the second communication device, wherein the transmission unit comprises a plurality of antennas, and wherein the transmission unit is configured to transmit the request toward the second communication device through beamforming using the plurality of antennas and an actual position of the second communication device; a reception unit configured to receive a communication link response including information regarding the establishment of a link on the basis of the second communication device required for establishing a communication link from the second communication device; and a controller configured to select the collected image of the second communication device displayed on the screen of the display unit, calculate the actual position of the second communication device based on a position of the collected image of the second communication device within the screen, generate the request for a communication link, analyze the communication link response, and establish a communication link between the first communication device and the second communication device by using the information regarding the establishment of a link on the basis of the first communication device and the information regarding the establishment of a link on the basis of the second communication device, wherein the information regarding the establishment of a link on the basis of the first communication device comprises at least one of absolute space coordinates of the first communication device or relative space coordinates between the first communication device and the second communication device. ### Claim 14 (depends on 13) The first communication device of claim 13, wherein the link establishment information comprises at least one of an image of the first communication device, an image of the second communication device, or an image of the second communication device extracted from the screen. ### Claim 15 (depends on 13) The first communication device of claim 13, wherein the controller is configured to calculate the actual position of the second communication device based on the position of the collected image of the second communication device within the screen, a size of the collected image of the second communication device within the screen, and an orientation of the collected image of the second communication device from a center of the first communication device. ### Claim 16 A second communication device comprising: a reception unit configured to receive a request for a communication link including information regarding the establishment of a link on the basis of a first communication device required for establishing a communication link from the first communication device; a transmission unit configured to transmit a communication link response including information regarding the establishment of a link on the basis of the second communication device required for establishing a communication link to the first communication device, wherein the transmission unit comprises a plurality of antennas, and wherein the transmission unit is configured to transmit the communication link response toward the first communication device through beamforming using the plurality of antennas; and a controller configured to analyze the received request for a communication link, generate the communication link response, and establish a communication link between the second communication device and the first communication device by using the information regarding the establishment of a link on the basis of the second communication device and the information regarding the establishment of a link on the basis of the first communication device, wherein the information regarding the establishment of a link on the basis of the second communication device comprises at least one of absolute space coordinates of the second communication device or relative space coordinates between the first communication device and the second communication device, wherein the first communication device comprises a first plurality of antennas, wherein the request is received by the second communication device as a result of the first communication device transmitting the request toward the second communication device through beamforming using the first plurality of antennas and an actual position of the second communication device, wherein the actual position of the second communication device is calculated by the first communication device based on a position of an image of the second communication device within a screen of the first communication device. ### Claim 17 (depends on 16) The second communication device of claim 16, wherein the link establishment information comprises at least one of an image of the first communication device, an image of the second communication device, or an image of the second communication device extracted from the screen. ### Claim 18 (depends on 16) The second communication device of claim 16, wherein the actual position of the second communication device is calculated by the first communication device based on the position of the image of the second communication device within the screen of the first communication device, a size of the image of the second communication device within the screen of the first communication device, and an orientation of the image of the second communication device from a center of the first communication device.