Transmitting binary data files using electronic mail

Details Transmitting binary data files using electronic mail Transmitting binary data files using electronic mail

1990-11-30

1992-08-04

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from mixed base codes

341 55, 341 90, 3642844, H03M 706

Patent

active

051362910

ABSTRACT:
Improved means and methods are provided for transmitting binary data on a communication system, such as E-mail, which restricts the number of acceptable characters that can be transmitted. In a preferred embodiment, the binary data to be transmitted is first subjected to a Welch compression and then converted into base-85 digits for transmission. At the receiving end, the received base-85 digits are converted back into compressed binary and then subjected to Welch decompression to obtain the original binary data.

REFERENCES:
patent: 3736412 (1973-05-01), Wright
patent: 4342027 (1982-07-01), Hanson
patent: 4752765 (1988-06-01), Larson
patent: 4789852 (1988-12-01), Bailey et al.
Manukyan, et al., "A Code Converter for Data Transmission Over Communications Channels", Telecommunications and Radio Engineering Part l, vol. 31, No. 6, Jun. 1977.

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