Apple patent application on videoconferencing

US published application 20080100693, titled Method, System, and Graphical User Interface for Making Conference Calls,

first claim: A computer-implemented method, comprising:establishing a first communication link between a first party and a user in response to a first action by the user;displaying a first image corresponding to the first party at an intensity that is greater than a threshold;while the first communication link is ongoing, establishing a second communication link between a second party and the user in response to a second action by the user;switching the user from the first communication link to the second communication link;while continuing to display the first image, displaying a second image corresponding to the second party; andvisually highlighting the second image so as to facilitate visual differentiation of the first and second images.

first inventor: Steven P. Jobs