Polling system for a duplex communications link

Boots – shoes – and leggings

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

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.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Polling system for a duplex communications link does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polling system for a duplex communications link, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polling system for a duplex communications link will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2265426

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.