Boots – shoes – and leggings
Patent
1978-12-08
1981-02-17
Nusbaum, Mark E.
Boots, shoes, and leggings
370 96, 455 53, G06F 304, H04J 600, H04Q 500
Patent
active
042518652
ABSTRACT:
Channel efficiency in a communications link between a controller and multiple portable units is increased by polling the active units and a set number of inactive units in a sequence where a "poll" consists of sending the binary coded address of the portable unit. The stream of transmitted data bits is only interrupted by a response from the portable unit, then resumed at the end of the response or a given portion of the response. During the reception of the response, certain other types of messages can be sent out by the controller. Portable responses can be automatic responses as to status, etc., or can be data initiated by the operator of the portable unit keyboard and stored in the portable unit memory until "armed" by the operator, then automatically transmitted to the controller when the portable unit address is received.
REFERENCES:
patent: 3582896 (1971-06-01), Silber
patent: 3725864 (1973-04-01), Clark et al.
patent: 3787627 (1974-01-01), Abramson et al.
patent: 3790717 (1974-02-01), Abramson et al.
patent: 3919483 (1975-11-01), Gindi et al.
patent: 4047162 (1977-09-01), Dorey et al.
patent: 4100533 (1978-07-01), Napolitano et al.
patent: 4138735 (1979-02-01), Allocca et al.
Bass Robert H.
Moore Morris A.
Gillman James W.
Motorola Inc.
Nusbaum Mark E.
Parker Margaret Marsh
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