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Cable modem optimized for high-speed data transmission from the home to the cable head

  • US 5,986,691 A
  • Filed: 12/15/1997
  • Issued: 11/16/1999
  • Est. Priority Date: 12/15/1997
  • Status: Expired due to Term
First Claim
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1. A transmitter for use with a cable system including a cable, the cable being coupled between the transmitter and a cable-head end, the transmitter comprising:

  • a terminal; and

    a data modulator coupled to the terminal, the data modulator providing modulated data signals on a television channel in a frequency band between 50-550 MHz across the cable, wherein the modulated data signals are transmitted so as not to interfere with the simultaneous reception of cable television signals on the television channel, wherein the modulated data signals are provided on vestigial sidebands of the cable television signals.

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