×

System and method for transporting data

  • US 4,580,276 A
  • Filed: 08/05/1983
  • Issued: 04/01/1986
  • Est. Priority Date: 08/05/1983
  • Status: Expired due to Fees
First Claim
Patent Images

1. A private data network including some localized transmission medium, at least one master modem, at least one slave modem, and means for encoding, transmitting and receiving signals among said modems according to a data encoding and transmission scheme whereby a first analog frequency is selected to represent logical one by being both transmitted and received by a modem for a period of time equivalent to no more than one-half the bit period of said logical one and whereby a second analog frequency is selected to represent logical zero by being transmitted and received by a modem for a period of time equivalent to no more than half the bit period of said logical zero for the purpose of exchanging data throughout the area served by said localized transmission medium.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×