×

Headend processing for a digital transmission system

  • US 5,550,825 A
  • Filed: 11/19/1991
  • Issued: 08/27/1996
  • Est. Priority Date: 11/19/1991
  • Status: Expired due to Fees
First Claim
Patent Images

1. A headend apparatus comprising:

  • a first input for receiving plurality first digital time division multiplexed channels of program information from a first program source;

    a second input for receiving one or more second digital channels of program information from a second program source;

    a demultiplexing circuit coupled to said first input for demultiplexing the first channel of digital time division multiplexed program information into a plurality of demultiplexed digital channels of program information;

    a switching circuit to which the plurality of demultiplexed digital channels and the and second digital channels of programs information are applied; and

    a switch control for controlling said switching circuit to output third channels of program information comprising combinations of programs information of the first and second channels for distribution to subscriber.

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