Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1993-08-17
1995-08-29
Hajec, Donald
Registers
Systems controlled by data bearing records
Credit or identification card systems
235441, 34082506, 34082554, 307127, G06K 500
Patent
active
054462657
ABSTRACT:
An environmentally tolerant personal identification, access control and monitoring system including a dual contact limb-worn identification (ID) code-producing unit and a multiple-physical contact arrayed ID code reader are described. Momentary physical contact between the unit's dual contacts, in any position and orientation, and the reader's arrayed multiple contacts is detected by sequentially energizing contact pairs of the array until a characteristic low-impedance is sensed and then the indicated contact pair is reverse-energized to read the ID code from the ID unit. Preferably, the contact array geometry is of closely spaced, nickel-plated, planar, hexagonally shaped conductors that are group-encoded and -energized to minimize the input/output port requirements of a microprocessor and associated drive/sense electronics that accomplish the scanning of the array and the reading of the ID unit. False-positive indications of physical contact by an ID unit are avoided by the preferred sensing method, which can distinguish therefrom a condition in which adjacent contacts in the array incidentally are bridged, e.g. by a buildup of ice on the ID reader's contact array. ID codes may be used to collect person-tracking information, as well as to limit access to a person wearing a properly encoded ID unit.
REFERENCES:
patent: 3851314 (1974-11-01), Hedin
patent: 3891980 (1975-06-01), Lewis et al.
patent: 4048986 (1977-09-01), Ott
patent: 4129855 (1978-12-01), Rodrian
patent: 4189712 (1980-02-01), Lemelson
patent: 4204236 (1980-05-01), Nakasho
patent: 4354189 (1982-10-01), Lemelson
patent: 4453161 (1984-06-01), Lemelson
patent: 4591854 (1986-05-01), Robinson
patent: 4602351 (1986-07-01), Shimamura et al.
patent: 4845351 (1989-07-01), Hara et al.
patent: 5004897 (1991-04-01), Biggio et al.
patent: 5182466 (1993-01-01), Ohkubo
patent: 5194758 (1993-03-01), Ver Meer
First Tracks, Inc.
Hajec Donald
Lee Michael G.
LandOfFree
Personal identification, access control and monitoring system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Personal identification, access control and monitoring system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Personal identification, access control and monitoring system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1821122