Text information transferring method in visual telephone calling
A technology of text information and videophone, applied in image communication, television, electrical components, etc., can solve the problems of reduced efficiency, great effort, trouble, etc.
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[0024] In the present invention, the sending and receiving of text information is mainly realized by using the User Input Indication message (User Input Indication) in the ITU-T H245 multimedia control protocol supported by the videophone protocol stack. This function is mainly used in the current video phone application to realize the dual-tone multi-frequency (DTMF) function of the voice phone, that is, each time the user enters a character on the keyboard of the mobile phone, such as a number key, "*" or "#", H245 just sends these characters to the other party's terminal. At the same time, the user input indication message is also used for message indication between terminals. For example, one terminal can send a specific character string to the other party to notify the other party that the terminal is recording or taking pictures of the other party. The other party can perform corresponding processing after parsing.
[0025] The present invention utilizes the function of ...
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