Communication means with transducer physically spaced from interior wall of secure housing
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United States of America Patent
Stats
-
Jan 12, 1982
Issued Date -
N/A
app pub date -
Aug 3, 1979
filing date -
Jul 14, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved input/output channel for linking a computer control unit for an electronic postal meter to input/output units. The invention includes a converter for converting unit-output electrical signals to non-conductive carrier signals and for converting the non-conductive carrier unit-input signals back to electrical signals. Non-conducting means are used to transmit the signals between the meter and the input/output units so that any attempts to interfere with meter operation will, of necessity, involve physical evidence of tampering, observable to an inspector.
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Family
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