System having a character generator for printing encrypted messages
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United States of America Patent
Stats
-
Jan 13, 1987
Grant Date -
N/A
app pub date -
Jul 18, 1983
filing date -
Jul 18, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system for the metering of encrypted postage and similar indicia includes a device for printing such indicia and a device for reading such indicia. The printing is accomplished with a dot matrix printer driven by signals obtained from a character generator and an encryption circuit. The reading is accomplished by correlating received characters against a stored array of symbols to determine the presence of a symbol and the comparison of the separated coded data with a reference code to determine the accuracy of the printed material. Thereby, forgery and alteration is inhibited. Alphanumeric characters are utilized for both the data and the code, a group of characters for the data being separated from a group of characters for the code to allow for the reading of the data, while readily extracting the remaining characters for verification purposes.
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- Non-US Classification not provided for expired patents
Cited Art Landscape
Patent Citation Ranking
- Citation Ranking not provided for expired patents
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