Contention interference detection in data communication receiver
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United States of America Patent
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-
Jun 2, 1981
Grant Date -
N/A
app pub date -
Jun 7, 1979
filing date -
Jun 7, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When a plurality of transmitters share a common communication medium or radio frequency channel, collision interference will result when two or more transmissions overlap in time. An interference detector apparatus is used to sense this simultaneous transmission. The use of code redundancy in transmitting data over the medium in conjunction with a code classifying decoder apparatus permits interference to be detected within the receiver. The interference detector signal interrupts its own transmitter or a plurality of transmitters, when collision interference is present on the medium. This truncation of transmission improves the channel capacity of the shared medium. The interference signal can also be used to inhibit a receiver from generating erroneous data during the interference duration.
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