Communications: radio wave antennas – Antennas – Body-attached or connected
Reexamination Certificate
2000-07-28
2001-10-30
Phan, Tho (Department: 2821)
Communications: radio wave antennas
Antennas
Body-attached or connected
C235S382000, C340S522000
Reexamination Certificate
active
06310581
ABSTRACT:
This invention relates to a passage control device for non-contacting data carriers, having an antenna unit with a front wall extending in the passage direction and facing the passageway, the height of said wall corresponding to the different wearing heights of the data carriers, and said wall having disposed thereon at least one antenna for data transmission in the radio wave range, and a turnstile with an obliquely downward pointing hinge pin and barrier arms extending obliquely to said hinge pin.
Such a passage control device is known (DE 9490094 U1).
For non-contacting passage control the person to be checked wears a transponder, e.g. in the form of a watch or in the form of a card in a pocket of his clothing, as a data carrier to interact with a transceiver via the antenna in the radio wave range for power consumption and data transmission.
Data transmission is limited to the area directly in front of the antenna. The time the person to be checked takes to passes the antenna must therefore correspond to the transaction time necessary for data transmission, resulting in a relatively great length of the antenna unit of 30 cm to 80 cm for example. On the other hand, the antenna must also have a considerable height of 40 cm to 100 cm for example to take account of the different sizes of the persons to be checked (child/unusually tall adult) and the data carrier location at different heights on the person (trouser pocket/pocket on upper arm). In addition, at least part of the electronics of the transceiver is accommodated in the antenna unit so that it also has a certain depth.
The antenna unit thus forms a massive, fairly unattractive box. When a plurality of passageways with such antenna units are disposed side by side this considerably increases the impression of massiveness.
Various measures have been taken to give the antenna unit a more agreeable appearance. For example, as indicated by the prior art cited above, the antenna unit has been provided with a bulge having an axis of curvature extending in the passage direction. The resulting concave shape of the large-surface front wall suggests a technicity which does reduce the optical impression of massiveness, but not to a satisfactory degree. In addition, the bulged shape of the antenna unit involves considerable additional production effort.
To improve the appearance of the antenna unit, its front wall and its front and rear walls have further been given a transparent design. However, the two large transparent surfaces involve considerable costs. Also, they require an arrangement of all electronic components apart from the antenna in the edge area and thus an additional expenditure.
The problem of the invention is to provide a non-contacting passage control device with an optically agreeable antenna unit at low production cost.
This is obtained according to the invention in that the front wall of the antenna unit, together with at least one antenna, extends downward beyond the bearing of the turnstile, the turnstile is mounted on the area of the antenna unit on the front in the passage direction, and the front wall portion extending downward beyond the turnstile bearing extends obliquely rearward.
This forms a large effective antenna area, ensuring through its great length before the turnstile an accordingly long time of passage for the person to be checked from entrance into the range of the antenna up to the turnstile, and thus a long transaction time for data transmission, and ensuring through its great height that the data carriers can be worn by the persons going through the passageway at a great variety of heights (e.g. child/adult; e.g. trouser pocket/headwear). To prevent garments or the like from being jammed, the lower portion of the front wall of the antenna unit is inclined rearward.
The front wall of the antenna unit extending in the passage direction and facing the passageway is preferably formed at least in the upper area as an information surface for optical information. This gives the front wall an additional function, eliminating the optical impression of massiveness of the antenna unit. Perception of the information makes other impressions retreat into the background for the viewer.
The optical information provided on the front wall of the antenna unit can be designed in different ways. It may involve alphanumeric and/or pictorial information, or possibly moving pictures. If the passage control device is used for access to a lift or cable car, the front wall can be provided for example with a map of the particular area or be designed as an advertising surface. It is also possible, for example at a ski lift, to design the front wall as a mirror for the winter landscape.
The front wall can be provided with permanent information, for example a map, or with variable information. In the latter case the front wall can have clamping or magnetic holders for posters or spaced-apart guides with grooves for insertion of an information sign at its edges, for example. The front wall can further be designed so as to be illuminated, optionally also by interior lighting.
Further, the front wall of the antenna unit can be provided with a depression in which a poster, a sign or similar flat information material can be fastened. In particular if a plurality of passageways are disposed side by side, not only the front wall of the antenna unit can be designed as an information surface, but also the rear wall thereof.
In view of its agreeable appearance even when of large dimensions, the inventive antenna unit is very well suited for providing a plurality of antennas.
One uses non-contacting data carriers in which different carrier frequencies are used for data transmission in the radio range (10
4
-3.10
9
Hz). For example, there are data carriers working with 13.56 MHz, a carrier frequency provided according to an ISO standard, and others with a different, e.g. manufacturer-specific, carrier frequency. Data carriers are also known in which a change of frequency is effected, for example after card identification, for safer and faster data transmission (“frequency hopping”) (cf. EP-A-0642096).
REFERENCES:
patent: 4822990 (1989-04-01), Tamada et al.
patent: 5202550 (1993-04-01), Kocznar et al.
patent: 5478995 (1995-12-01), Wallerstorfer et al.
patent: 5634209 (1997-05-01), Prudhomme et al.
patent: 5886634 (1999-03-01), Muhme
patent: 94 90 094 (1996-02-01), None
patent: 0563 017 (1993-09-01), None
patent: 0 645 840 (1995-03-01), None
patent: 2 624 677 (1989-06-01), None
patent: 2 295 297 (1996-05-01), None
patent: WO 94/25939 (1994-11-01), None
patent: WO 95/01459 (1996-01-01), None
International Preliminary Examination Report, App. No. PCT/EP99/04083, Mar., 2000.
Flynn ,Thiel, Boutell & Tanis, P.C.
Phan Tho
SkiData AG
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