Television – Basic receiver with additional function – Multimode
Patent
1994-12-27
1997-08-19
Hsia, Sherrie
Television
Basic receiver with additional function
Multimode
348558, 348473, 348358, H04N 546
Patent
active
056593694
ABSTRACT:
A video transmission apparatus for a video teleconference terminal for displaying video signals with a proper aspect ratio in a video teleconference terminal which transmits and receives video signals representing pictures of different aspect ratios. The video transmitter determines, from among the video signals generated by the cameras having different aspect ratios, which signal should be transmitted to the receiving terminal by a key operation on the operation pad. The result of selection by the operation pad is sent via a video controller to a transmission video signal selector, which selects one of the outputs from the cameras according to the result. The video signal from the selected camera is output to a video signal transmitter as a transmission video signal. A CPU of the video controller recognizes the selecting operation on the operation pad and, accordingly, generates a display control signal which indicates an aspect ratio corresponding to the camera thus selected. The display control signal generated is output to the video signal transmitter via a transmission display control interface. The video signal transmitter multiplexes the display control signal and the transmission video signal and sends the resultant signal over a communication network.
REFERENCES:
patent: 5111292 (1992-05-01), Kuriacose
patent: 5280540 (1994-01-01), Addeo et al.
patent: 5365276 (1994-11-01), Imai et al.
patent: 5420632 (1995-05-01), Yamagiwa
patent: 5444492 (1995-08-01), Kihara
patent: 5475442 (1995-12-01), Matsushita
Mitsubishi Denki Giho, vol. 64, No. 8, 1990, Socio-Tech, pp. 45(657)-88(700).
Hsia Sherrie
Mitsubishi Denki & Kabushiki Kaisha
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