Data Transmission Method and Mobile Device Adapted Thereto

1. A method for transmitting data in a mobile device, the method comprising: searching, by the mobile device, for external mobile devices near the mobile device; connecting to at least one of the external mobile devices; transmitting a location information request message to the at least one external mobile device connected to the mobile device; receiving the location information from each of the at least one external mobile device connected to the mobile device; responsive to recognizing at least one of a movement direction or strength level of motion of the mobile device, determining, by the mobile device, at least one target mobile device from among the external mobile devices as a function of (i) the recognized at least one of the movement direction or strength level of motion of the mobile device and (ii) a distance and an azimuth of the external mobile devices with respect to a current location of the mobile device, the distance and the azimuth of the external mobile devices being calculated from the received location information of the external mobile devices; and transmitting data to the determined at least one target mobile device.

2. The method of claim 1 , wherein acquiring the location information comprises: measuring the current location of the mobile device; calculating the distance and the azimuth for each of the at least one external mobile device connected to the mobile device as a function of the current location of the mobile device; and storing the calculated distance and azimuth.

3. The method of claim 1 , further comprising: displaying a data writing menu; setting data entered by a user as the data to be transmitted; displaying a data transmission mode setting menu including a single mode and a multi mode; and setting the data transmission mode as one of the single mode and the multi mode, according to a user's selection.

4. The method of claim 3 , wherein determining the at least one target mobile device comprises: measuring the direction of motion of the mobile device; and setting, as the at least one target mobile device, at least one of the external mobile devices that is in the measured direction of motion.

5. The method of claim 3 , wherein determining the at least one target mobile device comprises: measuring the direction and the strength level of motion input by the user; detecting at least one of the external mobile devices in the measured direction of motion; when more than one of the external mobile devices are detected in the measured direction of motion and the mobile device is in a single mode, setting one of the external mobile devices located at a distance corresponding to the measured strength level of motion as the at least one target mobile device; and when one of the external mobile devices is detected in the measured direction of motion, setting the detected external mobile device as the at least one target mobile device.

6. The method of claim 3 , wherein determining the at least one target mobile device comprises: measuring a strength level and a range of motion input by a user; determining whether the measured range of motion is not less than a preset azimuth range; determining the data transmission mode when the measured range of motion is not less than a preset azimuth range; and determining, as the at least one target mobile device, at least one of the external mobile devices in the range of motion when the data transmission mode is set to a multi mode.

7. The method of claim 6 , further comprising: determining, as the at least one target mobile device, one of the external mobile devices that is closest to the mobile device, when the data transmission mode is set to a single mode.

8. The method of claim 1 , further comprising: determining whether a data sharing mode of the mobile device is set to an active state; and operating, when the data sharing mode is set to the active state, a short-range communication unit, a location measurement module, a geomagnetic sensor, and an acceleration sensor in the mobile device.

9. The method of claim 1 , wherein setting the at least one target mobile device to receive the data as a function of the detected change of the mobile device comprises setting the at least one target mobile device to receive the data as a function of a sensed direction of the detected change of the mobile device.

10. A mobile device comprising: a short-range communication unit configured to search for external mobile devices near the mobile device, receive location information from the each external mobile device, and transmit data to at least one target mobile device, connect to at least one of the external mobile devices, transmit a location information request message to the at least one external mobile device connected to the mobile device, and receive the location information from each of the at least one external mobile device connected to the mobile device; a controller configured to, responsive to recognizing at least one of a movement direction or strength level of motion of the mobile device, determine the at least one target mobile device from among the external mobile devices as a function of (i) the recognized at least one of the movement direction or strength level of motion of the mobile device and (ii) a distance and an azimuth of the external mobile devices with respect to a current location of the mobile device, the distance and the azimuth of the external mobile devices being calculated from the received location information of the external mobile devices.

11. The mobile device of claim 10 , wherein the controller is further configured to control a motion sensing unit configured to measure the current location of the mobile device, calculate the distance and the azimuth for each of the at least one external mobile device connected to the mobile device as a function of the measured current location of the mobile device, and store the calculated distance and azimuth in a storage unit.

12. The mobile device of claim 11 , further comprising a display unit, wherein the controller is further configured to control the display unit to display a data writing menu on the display unit, set data entered by a user as the data to be transmitted, display a data transmission mode setting menu including a single mode and a multi mode on the display, and set the data transmission mode as one of the single mode and the multi mode, according to a user's selection.

13. The mobile device of claim 12 , wherein the motion sensing unit comprises: a geomagnetic sensor configured to measure the direction of motion of the mobile device; and an acceleration sensor configured to measure the strength level of motion of the mobile device.

14. The mobile device of claim 10 , wherein the short-range communication unit comprises at least one of a Bluetooth communication module, a WiFi communication module, a Zigbee communication module, an infrared communication module, a Near Field Communication (NFC) communication module, and a Radio Frequency Identification (RFID) communication module.

15. The mobile device of claim 13 , wherein the controller is further configured to set at least one of the external mobile devices that is in the measured direction of motion as the at least one target mobile device.

16. The mobile device of claim 12 , wherein the controller comprises a data setting unit configured to set the data transmission mode as one of the single mode and the multi mode.

17. The mobile device of claim 13 , wherein the controller comprises a target mobile device setting unit configured to detect external mobile devices in the measured direction of motion, set one of the external mobile devices located at a distance corresponding to the measured strength level of motion as one of the at least one target mobile device when more than one of the external mobile devices are detected in the measured direction of motion and the mobile device is in a single mode, and set the detected external mobile device as the at least one target mobile device when one of the external mobile devices is detected in the measured direction of motion.

18. The mobile device of claim 16 , wherein the motion sensing unit is further configured to measure a range of motion of the mobile device.

19. The mobile device of claim 12 , wherein the controller comprises a target mobile device setting unit configured to determine whether a measured range of motion is not less than a preset azimuth range, determine the data transmission mode when the measured range of motion is not less than a preset azimuth range, and determine, as the at least one target mobile device, at least one of the external mobile devices in the range of motion when the data transmission mode is set to a multi mode.

20. The mobile device of claim 19 , wherein the target mobile device setting unit is further configured to determine, as the at least one target mobile device, one of the external mobile devices that is closest to the mobile device, when the data transmission mode is set to a single mode.

21. The mobile device method of claim 10 , wherein the controller is further configured to determine whether a data sharing mode of the mobile device is set to an active state, and operate the location measurement module, the geomagnetic sensor, and the acceleration sensor when the data sharing mode is set to the active state.