1974-09-30
1976-03-30
Claffy, Kathleen H.
179 18BC, H04M 356
Patent
active
039476391
ABSTRACT:
A method and apparatus for providing improved telephonic conferences is presented. A speaker is selected for each conferee from the signals of the other conferees. The peak values of the speaker signal establish a variable reference level which another conferee must first exceed in order to become the new speaker and establish a new reference level. The reference level is continuously allowed to decay so that new speakers may gain the floor when the current speaker's peak signals fall below the peak signals of another speaker. Both an analog and a digital embodiment of the invention are presented.
REFERENCES:
patent: 3601530 (1971-08-01), Edson et al.
patent: 3604855 (1971-09-01), Pommerening
patent: 3699264 (1972-10-01), Pitroda et al.
patent: 3755625 (1973-08-01), Maston
Kleitsch John C.
Nicholas David C.
Torgrim Willard J.
Claffy Kathleen H.
Crawford Robert J.
Lutz Bruce C.
Popek Joseph
Rockwell International Corporation
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