Image communication control method, image communication control program, and image communication apparatus
First Claim
1. An image communication control method for conducting image communication by using one of a plurality of different image communication systems via sending/receiving paths including an IP network, wherein a transmitter and receivers for conducting the image communication or devices for relaying the image communication existing in the sending/receiving paths include SDP media stream descriptions in an SIP message and send it on the basis of an SIP protocol, the SDP media stream descriptions comprising different image communication systems usable by the transmitter and the receivers for conducting the image communication and image communication control parameters described based on given syntaxes;
- and wherein the transmitter and the receivers for conducting the image communication select an image communication system for use in practical image communication and image communication control parameters to be used in the appropriate image communication system in given order of priority on the basis of the SDP media stream descriptions in the SIP message received from an apparatus in the opponent party and control the image communication and output processing in the image receiving party by using the selected image communication system and image communication control parameters.
1 Assignment
0 Petitions
Accused Products
Abstract
When image communication is conducted by using one of a plurality of different image communication systems via a sending/receiving path including an IP network (101), a transmitter (105) and receivers (108, 108a, 112, 115) or devices (gateway (111, 113) or an IP network interface (109)) for relaying the image communication existing in the sending/receiving path store SDP media stream descriptions, which include different image communication systems usable by the transmitter and receivers, in an SIP message and send the SIP message, and select an image communication system for use in practical image communication in given order of priority and image communication control parameters to be used in the appropriate image communication system, on the basis of the SDP media stream descriptions. Whereby, an appropriate image communication system can be automatically selected from various image communication system that can be used between a calling terminal and a called terminal, without a need for a complicated operating procedure or setup procedure.
101 Citations
9 Claims
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1. An image communication control method for conducting image communication by using one of a plurality of different image communication systems via sending/receiving paths including an IP network,
wherein a transmitter and receivers for conducting the image communication or devices for relaying the image communication existing in the sending/receiving paths include SDP media stream descriptions in an SIP message and send it on the basis of an SIP protocol, the SDP media stream descriptions comprising different image communication systems usable by the transmitter and the receivers for conducting the image communication and image communication control parameters described based on given syntaxes; - and
wherein the transmitter and the receivers for conducting the image communication select an image communication system for use in practical image communication and image communication control parameters to be used in the appropriate image communication system in given order of priority on the basis of the SDP media stream descriptions in the SIP message received from an apparatus in the opponent party and control the image communication and output processing in the image receiving party by using the selected image communication system and image communication control parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification