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US 4,067,010 AGranted
Circuit for inhibition of autogenetic false alarms in a collision avoidance system
AssigneeRCA Corporation
InventorJames Robert Hall
Life of this patent
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Abstract
In a cooperative collision avoidance system, probe signals are inhibited for a predetermined time period to prevent autogenetic false alarms, that is, false replies to one's own interrogation probes.
Claims3
A circuit in a probe-reply station of a collision avoidance system for inhibiting autogenetic false alarm signals generated by said station, comprising the combination of:
- means for transmitting periodic probe signals including means for randomly selectively generating probe signals of different types and transmitting one probe signal of one of said types;
- normally operative probe reply means for transmitting a reply signal in response to received probe signals;
- and
- means responsive to said probe signal transmitting means indicative of the transmission of a probe signal for inhibiting said normally operative probe reply means from transmitting a reply signal for a predetermined but relatively short period of time following the transmission of each of said transmitted probes;
- wherein said probe reply means includes means for receiving said probe signals, and means responsive to received probe signals for generating a reply signal corresponding to each of said probe signal types;
- and
- wherein said inhibiting means includes means for inhibiting the transmission of said reply signals that correspond to said one probe signal type.
4 more elements
Dependencies are inferred from the claim text.