Telephonic communications – Having light wave or ultrasonic link for speech or paging... – Including fiber optic link within telephone network
Patent
1990-02-02
1992-12-08
Dwyer, James L.
Telephonic communications
Having light wave or ultrasonic link for speech or paging...
Including fiber optic link within telephone network
358 85, H04N 712, H04N 714
Patent
active
051704277
ABSTRACT:
An audio and video communications terminal, of the type comprising a housing, a camera provided with an optical system, a display screen, a microphone, a loudspeaker, and a central unit including a sound and image information encoder and decoder, and an interface in association with the elements for communication with another terminal of the same type via a digital transmission network, the terminal further comprising electric motors and clutches for adjusting at least one camera parameter; a manual control suitable for generating control information for adjusting the parameter(s); and a switch for switching between a local adjustment mode in which the control information is applied to the electric motors and clutches, and a remote adjustment mode in which the control information is sent to the other terminal over the digital network in parallel with the sound and image information, and in which control information received from the other terminal, likewise over the digital network and in parallel with sound and image information, is applied to the electric motors and clutches. The invention is applicable to improving user comfort with video telephones.
REFERENCES:
patent: 4485400 (1984-11-01), Lemelson et al.
patent: 4891837 (1990-01-01), Walker et al.
patent: 5008924 (1991-04-01), Guichard et al.
I.E.E.E. Journal on Selected Areas in Communications, vol. SAC-4, No. 4, Jul. 1986, pp. 625-632, M. Tasto, "Terminals for Broad-Band Office Communications".
Review of the Electrical Communications Laboratories, vol. 36, No. 2, Mar. 1988, pp. 233-237 G. Suzuki "Small Screen Video Communication Terminal".
Buchner Georges
Guichard Jacques
Isckia Alain
Dwyer James L.
L'Etat Francais
Woo Stella L.
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