×

Telecommunications system and method

  • US 5,062,136 A
  • Filed: 09/12/1990
  • Issued: 10/29/1991
  • Est. Priority Date: 09/12/1990
  • Status: Expired due to Fees
First Claim
Patent Images

1. Apparatus for adapting video and digital signals to a computer in a telecommunications system to allow a plurality of terminals to engage in teleconferencing via a digital data network, comprising:

  • video input means for forming a standard video signal;

    a frame grabber connected to the video input means;

    a computer connected to the flame grabber to receive the video signal;

    means connected to the computer for encoding and compressing the video signal and producing a continuous, fixed rate digital data stream output signal that comprises a first sequence of picture lines to define a first picture to be transmitted having a gray scale, and for controlling horizontal resolution, and for controlling the update rate for the first pictures transmitted;

    means having an output connected as an input to said computer, for decoding and expanding digital signals from said data network, said means including a buffer for storing the first sequence of picture lines that comprise the first picture received by the means for encoding until the means for decoding receives a second sequence of picture lines that comprise the second picture received; and

    modulator/demodulator means for interfacing the output of the means for encoding and compressing and the input to said means for decoding and expanding with the digital data network.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×