| US 7,542,066 B2 | ||
| Communication terminal and method for controlling the same | ||
| Yosuke Ezumi, Ohta-ku (Japan); Yukio Nohata, Yokohama (Japan); Atsushi Takahashi, Kawasaki (Japan); Muneki Nakao, Yokohama (Japan); and Shinya Kogure, Ota (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on May 23, 2005, as Appl. No. 11/134,884. | ||
| Claims priority of application No. 2004-169279 (JP), filed on Jun. 08, 2004. | ||
| Prior Publication US 2005/0271062 A1, Dec. 08, 2005 | ||
| Int. Cl. H04N 7/14 (2006.01); H04W 4/00 (2006.01) | ||
| U.S. Cl. 348—14.01 [348/14.02; 348/14.08] | 8 Claims |
| 1. A communication terminal for performing interactive audiovisual communication or audio communication using Internet Protocol
(IP) telephony over an IP network, the communication terminal comprising:
a base;
a wireless handset;
a transferring unit adapted to transfer an audio communication channel or an interactive audiovisual communication channel
between the base and the wireless handset;
a detecting unit; and
a controlling unit,
wherein the base includes,
an image inputting and outputting unit adapted to input and output images for the interactive audiovisual communication; and
an audio inputting and outputting unit adapted to input and output audio for the interactive audiovisual communication or
the audio communication,
wherein the wireless handset includes,
a connecting unit adapted to connect to the base via a wireless connection; and
an audio inputting and outputting unit adapted to input and output audio for at least the audio communication,
wherein the transferring unit transfers the audio communication channel or the interactive audiovisual communication channel
in accordance with a status of the wireless handset,
wherein the detecting unit detects a distance between the wireless handset and the base as the status of the wireless handset
while an interactive audiovisual communication is performed in which images are input and output by the image inputting and
outputting unit of the base and audio is input and output by the audio inputting and outputting unit of the wireless handset,
and
wherein, according to the detected distance, the controlling unit discontinues said interactive audiovisual communication
and moves communication to an audio communication in which audio is input and output by the audio inputting and outputting
unit of the wireless handset when the wireless handset is at a predetermined distance or greater from the base.
|