Data transfer device

Abstract

In a cellular telephone, a music data transfer control unit and a remote control unit control a close-range radio communications unit to establish a remote control session and a data transfer session, between the music data transfer control unit, remote control unit and an audio device, and transfer audio data to the audio device. If the data transfer session is not established during predetermined periods (W1+W2) after the establishment of the remote control session, a control unit disconnects the remote control session.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention, and together with the general description given above and the detailed description of the embodiments given below, serve to explain the principles of the invention.

FIG. 1 shows an illustration of a data transfer device according the an embodiment of the present invention and a system to which the data transfer device is applied;

FIG. 2 shows an illustration of sequences of information exchange executed between the data transfer device shown in FIG. 1 and an external device; and

FIG. 3 shows an illustration of a modified example of the system to which the data transfer device of the present invention is applied.

Claims

1. A data transfer device, comprising: first communications means for establishing a first session with an external device to make communications therewith;second communications means for establishing a second session with the external device to make communications therewith; andcontrol means for disconnecting the first session if the second communications means does not establish the second session with the external device during a preset period t1 after the first communications means establishes the first session with the external device.

2. The data transfer device according to claim 1, wherein if the second communications means does not establish the second session with the external device during a preset period t2 (<t1) after the first communications means establishes the first session with the external device, the control means controls the second communications means to request the external device to establish the second session.

3. The data transfer device according to claim 1, further comprising a memory for storing data, wherein the first communications means receives a request from the external device over the first session, andwherein in response to the request received by the first communications means, the second communications means sends the data stored in the memory to the external device over the second session.

4. The data transfer device according to claim 1, wherein both the first session and the second session are used to transfer data, and the first session and the second session are established successively.

5. The data transfer device according to claim 1, wherein the first session is used to control the external device and the second session is used to transfer data to the external device.

6. A data transfer device, comprising: first communications means for establishing a first session with a first device to make communications therewith;second communications means for establishing a second session with a second device to make communications therewith; andcontrol means for disconnecting the first session if the second communications means does not establish the second session with the second device during a preset period t1 after the first communications means establishes the first session with the first device.

7. The data transfer device according to claim 6, wherein if the second communications means does not establish the second session with the second device during a preset period t2 (<t1) after the first communications means establishes the first session with first device, the control means controls the second communications means to request the second device to establish the second session.

8. The data transfer device according to claim 6, further comprising memory for storing data, wherein the first communications means receives a request from the first device over the first session, andwherein in response to the request received by the first communications means, the second communications means sends the data stored in the memory to the second device over the second session.

9. The data transfer device according to claim 6, wherein both the first session and the second session are used to transfer data, and the first session and the second session are established successively.

10. The data transfer device according to claim 6, wherein the first session is used to control the external device and the second session is used to transfer data to the external device.