Videophone video and audio transfer system, mobile communication terminal, and videophone video and audio transfer method used for the same

• US 7,456,857 B2
• Filed: 03/02/2005
• Issued: 11/25/2008
• Est. Priority Date: 03/03/2004
• Status: Active Grant

• Current Assignee: Lenovo Innovations Ltd Hong Kong (Lenovo Group Ltd.)
• Original Assignee: NEC Corporation
• Inventors: Yamamoto, Hikaru
• Primary Examiner(s): Ramakrishnaiah; Melur
• Application Number:
  US11/068,974
• Publication Number:
  US 20050195273A1
• Time in Patent Office: 1,364 Days
• Field of Search: 348 1401- 1408, 348/14.09, 348/14.1, 348/14.11, 348/14.12, 348/14.13, 348/14.16
• US Class Current: 348/14.02
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04N 2007/145 Handheld terminals
• CPC Class Codes: H04N 7/142 Constructional details of the terminal equipment, e.g. arrangements of the camera and the display
• CPC Class Codes: H04W 52/0267 by controlling user interface components
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

The invention provides a mobile communication terminal in which the operating time can be prolonged when the videophone function is used, and a videophone with many persons involved therein can be realized while maintaining the freedom of the movement. A TRX unit receives video and audio data sent from a base station. A radio processing LSI performs the A/D conversion of the video and audio data. A CPU extracts the received video and audio data from a compressed state by use of MPEG or the like, and then outputs the resulting data to a built-in LCD and a built-in loudspeaker. When the data output destination is changed to a Bluetooth control LSI by manipulating operation keys, the built-in LCD and built-in loudspeaker are turned off. By using a Bluetooth TRX unit, the Bluetooth control LSI sends the compressed data through a Bluetooth receiver to an external display and loudspeaker.

Claims

1. A videophone video and audio transfer system comprising a mobile communication terminal which has a videophone function and internal output means outputting video and audio data obtained by the videophone function, wherein the mobile communication terminal has transfer means for transferring the video and audio data obtained by the videophone function to an external output device by use of short range wireless communication,

wherein the mobile communication terminal includes means for cutting the power supply to the internal output means when the video and audio data are transferred to the external output device by the transfer means.

2. The videophone video and audio transfer system according to claim 1, wherein:

the mobile communication terminal includes an imaging device for capturing images and an input device for picking up sounds; and

in the mobile communication terminal, the power supply to the imaging device and input device is cut when the video and audio data are transferred to the external output device by the transfer means.

3. The videophone video and audio transfer system according to claim 1, wherein the internal output means and the external output device each include a display for displaying the video data and a loudspeaker for outputting the audio data.

4. The videophone video and audio transfer system according to claim 1, wherein the short range wireless communication is a Bluetooth.

5. A mobile communication terminal comprising:

a videophone function and internal output means for outputting video and audio data obtained by the videophone function;

transfer means for transferring the video and audio data obtained by the videophone function to an external output device by use of short range wireless communication; and

means for cutting the power supply to the internal output means when the video and audio data are transferred to the external output device by the transfer means.

6. The mobile communication terminal according to claim 5, including an imaging device for capturing images and an input device for picking up sounds, wherein the power supply to the imaging device and input device is cut when the video and audio data are transferred to the external output device by the transfer means.

7. The mobile communication terminal according to claim 5, wherein the internal output means and the external output device each include a display for displaying the video data and a loudspeaker for outputting the audio data.

8. The mobile communication terminal according to claim 5, wherein the short range wireless communication is a Bluetooth.

9. A videophone video and audio transfer method in a videophone video and audio transfer system comprising a mobile communication terminal which has a videophone function and internal output means outputting video and audio data obtained by the videophone function, said method comprising:

a step of transferring the video and audio data obtained by the videophone function from the mobile communication terminal to an external output device by use of short range wireless communication; and

a step of cutting the power supply to the internal output means when the video and audio data are transferred to the external output device.

10. The videophone video and audio transfer method according to claim 9, wherein:

the mobile communication terminal includes an imaging device for capturing images and an input device for picking up sounds; and

in the mobile communication terminal, the power supply to the imaging device and input device is cut when the video and audio data are transferred to the external output device.

11. The videophone video and audio transfer method according to claim 9, wherein the internal output means and the external output device each include a display for displaying the video data and a loudspeaker for outputting the audio data.

12. The videophone video and audio transfer method according to claim 9, wherein the short range wireless communication is a Bluetooth.