Telecommunications system and method

Details Telecommunications system and method Telecommunications system and method

1990-09-12

1991-10-29

Buczinski, Stephen C.

Cryptography

Key management

Having particular key generator

358 85, 358426, 358146, 3649191, 379100, H04N 144, H04N 714, H04N 712

Patent

active

050621360

ABSTRACT:
A teleconferencing system includes desktop computers, external cameras and eripheral apparatus to allow interconnection of two or more terminals to engage in teleconferencing via digital data networks. A frame grabber interfaces each camera with its computer. Signals output from the computer are encoded and compressed before being input to a telephone line via a modulator/demodulator. A decoder is connected between the modulator/demodulator and the computer for decoding compressed video signals received by the modulator/demodulator means from the telephone line so that the signals may be displayed on a video display connected to the computer.

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patent: 4979028 (1990-12-01), Minematsu et al.
patent: 4996594 (1991-02-01), Murayama

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