| 摘要 |
A system includes an input, a character set mapping function and a character set compression function. The input receives binary data that includes a plurality of binary data bits that may be organized into a plurality of binary data bytes. The character set mapping function maps the binary data bits into a predetermined character set to produce a plurality of characters. The character set compression function compresses the plurality of characters using a character set compression algorithm to produce a plurality of compressed characters. After compression of the character set data, the plurality of compressed characters may be modulated via a modem and transmitted across a data link to a receiving location. At the receiving location, a demodulator receives the modulated data and demodulates the modulated data to produce the plurality of compressed characters. Then, a character set decompression function decompresses the plurality of compressed characters to produce a plurality of characters. A binary data extraction function then extracts the binary data from the plurality of characters. In mapping the binary data bits into the predetermined character set to produce the plurality of characters, each N bytes of binary data are expanded into M one byte characters where N is an integer, M is an integer and M is larger than N. In a described embodiment, N is equal to three and M is equal to 4.
|
