×

Transmitting binary data files using electronic mail

  • US 5,136,291 A
  • Filed: 11/30/1990
  • Issued: 08/04/1992
  • Est. Priority Date: 11/30/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. In an electronically implemented method for transmitting binary a data using a data communication system which restricts the number of acceptable characters for transmission, the steps of:

  • converting each of a predetermined plurality of bits of the binary data to be transmitted into a predetermined plurality of digits in a predetermined base,deriving a corresponding acceptable character for transmission on said data communication means in response to each digit produced by said converting, each digit of said predetermined base corresponding to a different acceptable character; and

    producing binary signals representing the derived acceptable characters for transmission on said system, said predetermined base being chosen so that the number of bits constituted by the binary signals produced for transmission of each predetermined plurality of digits is no more than 25% greater than said predetermined plurality of bits.

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