Communications: electrical – Continuously variable indicating – With meter reading
Patent
1997-12-15
2000-02-01
Horabik, Michael
Communications: electrical
Continuously variable indicating
With meter reading
380 23, 235380, 902 4, G06F 704
Patent
active
060208260
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a finger ring with data storage unit.
It is already known to provide finger rings with an electronic data storage unit in order to have available at all times an information storage which is both reliable and easily handled, and constantly supervisable. For an exchange of information with a corresponding control device, it is necessary to transmit the information, for which contactless means, for instance optical means (DE-OS 35 07 381(E 05 B 49/00), DE-OS 42 11 386(G 08 B 25/12)), electromagnetic means (DE-OS 35 07 389(E 05 B 49/00), DE-OS 25 57 637(E 05 B 47/00), DE-AS 25 57 637(E 05 B 49/00), DE-OS 42 11 386(G 08 B 25/12)) as well as magnetic means (DE-OS 35 07 389(E 05 B 49/00)) have been proposed, in addition to electrical contacts (DE-OS 35 07 389(E 05 B 49/00)).
Contactless connections, to be sure, have the advantage of being conveniently handled, but the disadvantage that the information transmitted can be easily picked up by unauthorized persons, for instance by the use of an eavesdropping device which records scattered radiation. Direct electrical contact provides much greater security in this respect; the disadvantage here, however, lies in the necessity of placing the contacts on the finger ring in proper position with respect to the mating contacts on the control device and of assuring simultaneous contact of the corresponding pairs of contacts. DE-OS 25 57 637(E 05 B 47/00) and DE-AS 25 57 637(E 05 B 47/00) describe a finger ring which has a recess on its outer side within which there can be inserted a component which is provided on its surface with two contact surfaces of hard metallic material and within which there is an electronic circuit which contains key information. Detailed descriptions of the two contact surfaces are not given, but it can be noted from FIG. 1 of DE-OS 25 57 637 and DE-AS 25 57 637 that the two contacts form a common plane with the flat surfaces of the aforementioned component part or are arranged only slightly different therefrom. This arrangement has the disadvantage that, in order to obtain good contacting with the mating contacts, a comparatively complicated construction is required. Such a construction is described in connection with FIG. 2 and FIG. 3 of DE-OS 25 57 637 and DE-AS 25 57 637 where the mating contacts are seated elevated on a scanning surface having a shape which corresponds to that of the contact-containing component on the ring and are resiliently mounted. For the making of contact between finger ring and mating contacts, the finger ring must be positioned precisely on or in the scanning surface and possibly pressed therein. This process requires a steady hand, favorable external conditions (light, no vibrations) and possibly time, which is a great disadvantage of such a ring with respect to user-friendly use.
In general, the making of contact is cumbersome from a handling standpoint, and thus no longer very user-friendly, if the finger ring must be brought precisely into a given position in order to produce a suitable connection between contact and mating contact.
Furthermore, other information supports with electrical data transmission have also become known. In U.S. Pat. No. 3,806,874, an identification system is described in which inter alia an identification unit in the form of an arm band is shown. There are two contacts on the outside of the arm band. In order to identify the unit, the arm band is pressed against two V-shaped mating contacts. For this purpose, however, the contacts and mating contacts must be positioned precisely opposite each other, which can be achieved only by a precise approach and a correct untilted position of the wrist. In addition to these disadvantages, there are also disadvantageous demands on the mating contacts in the case of an arm band. Their size must correspond approximately to the diameter of the arm band and they must be arranged clearly free-standing on their fastening base so that they can be readily accessed by the arm, which may possibly be
REFERENCES:
patent: 3806874 (1974-04-01), Ehrat
Horabik Michael
Jeanglande Jean B.
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