Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Utility Patent
1998-03-20
2001-01-02
Hunter, Daniel S. (Department: 2749)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C455S557000, C455S575100, C455S343200, C455S426100, C340S870030
Utility Patent
active
06169908
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention is related to a telecommunication system comprising a telecommunication network and a terminal, said terminal comprising a radiotelephone section and a pager section, the pager section being detachable from the radiotelephone section.
A terminal for use in such a telecommunication system is described in “Patent Abstracts of Japan, Publication number: 08168080 A”. In this document, a terminal is described in which the pager section is carried separately from the radiotelephone section by a user. As soon as a call comes in, the user couples the pager section to the radiotelephone section and is hereby enabled to speak with the caller.
SUMMARY OF THE INVENTION
It is an aim of the invention to provide a telecommunication system, in which the coupling and uncoupling of the radiotelephone section and the pager section of the terminal has a different function than in the prior art telecommunication system.
The telecommunication system according to the invention is thereto characterised in that the telecommunication network comprises paging means for transmitting to the pager section calls from callers who form part of a preferred group if the pager section of the radiotelephone section is uncoupled, and that the terminal is provided with coupling detection means for detecting whether the pager section of the radiotelephone section is uncoupled and, if this is the case, for transmitting an indication signal hereof to the paging means. After receipt of the indication signal, the paging means are informed that the pager section and the radiotelephone section are uncoupled. As of that moment, only those calls are transmitted to the pager section which originate from callers from the preferred group. These calls can comprise a short message which indicates the reason for the call. The preferred group can be set by the user. Dependent upon the preference of the user, this preferred group can consist, for example, of relatives, friends or colleagues. Calls originating from callers who do not belong to the preferred group are not transmitted to the pager section. The pager section can be uncoupled from the radiotelephone section in situations, such as going out or visiting customers, in which the user does not want to take the whole terminal with him because conducting complete telephone calls in such situations is inconvenient or inappropriate. By only taking the pager section with him, the user is still reachable for the preferred group. Uncoupling the pager section and the radiotelephone section is a very easy and intuitive way of setting up said selective reachability.
A first form of embodiment of the telecommunication system according to the invention is characterised in that the telecommunication network is provided with message storage means for storing the messages of callers who do not form part of the preferred group if the pager section of the radiotelephone section is uncoupled. Later, when the pager section and the radiotelephone section are again coupled to each other, these messages can be listened to by the user of the terminal. The callers who do not belong to the preferred group are thus not switched through to the pager section, so that the user of the terminal can not be disturbed by them if the pager section of the radiotelephone section is uncoupled.
A second form of embodiment of the telecommunication system according to the invention is characterised in that the paging means are arranged for transmitting the calls via a radio channel for mobile telecommunication. The pager section must thus be provided with a receiver for mobile communication in order to be able to receive the calls. As soon as the pager section and the radiotelephone section are coupled to each other, this receiver can also be used for processing the calls conducted with the radiotelephone section via the mobile radio channel. In this way the receiver is used for two purposes, which is efficient.
A third form of embodiment of the telecommunication system according to the invention is characterised in that the paging means are arranged for transmitting the calls via a radio channel for paging. The pager section must therefore be provided with a paging receiver in order to be able to receive the calls. The use of a radio channel for paging has the advantage that the pager section uses little energy. The reason for this is that in paging systems, as opposed to in mobile telephone systems, there is only traffic from the network to the terminal, and not the other way around. This has as a result that, in a paging system, the terminal does not lose any energy in transmitting messages to the network. In mobile telecommunication systems, the terminal must periodically transmit registration messages to the network.
A fourth form of embodiment of the telecommunication system according to the invention is characterised in that the telecommunication network comprises storage means for storing telephone numbers of callers who form part of the preferred group, and comparison means for comparing the telephone number of a caller with the stored telephone numbers, in which the comparison means are arranged for emitting a confirmation signal to the paging means if the telephone numbers correspond. In this way it can, in a simple manner, already be determined in the telecommunication network whether a caller belongs to the preferred group and whether a call must be transmitted to the pager section.
A fifth form of embodiment of the telecommunication system according to the invention is characterised in that the terminal comprises storage means for storing telephone numbers of callers who form part of the preferred group, and comparison means for comparing the telephone number of a caller with the stored telephone numbers, in which the comparison means are arranged for emitting a confirmation signal to the paging means if the telephone numbers correspond. As Gil soon as a caller attempts to reach the terminal, the telephone number of the caller is passed on to the terminal. If the caller belongs to the preferred group, a confirmation signal is sent back from the terminal to the paging means, which subsequently transmits a call from the caller to the pager section. If the caller does not belong to the preferred group, the terminal transmits a message to this extent back to the paging means. These, of course, do not then transmit a call to the pager section, so that the user is not disturbed.
A sixth form of embodiment of the telecommunication system according to the invention is characterised in that the telecommunication network comprises storage means for storing a code, and comparison means for comparing a code, entered by a caller, with the stored code, in which the comparison means are arranged for emitting a confirmation signal to the paging means if the codes correspond. The caller distributes the code over a preferred group, such as friends, relatives or business relations. If someone from this group calls and the pager section and the radiotelephone section are disconnected from each other, the caller is requested to enter a code. If the code is correct, a call is transmitted to the pager section.
A seventh form of embodiment of the telecommunication system according to the invention is characterised in that the terminal comprises storage means for storing a code, and comparison means for comparing a code, entered by a caller, with the stored code, in which the comparison means are arranged for emitting a confirmation signal to the paging means if the codes correspond.
The invention is further related to a terminal for use in a telecommunication system which comprises a telecommunication network and at least one terminal, the terminal comprising a radiotelephone section and a pager section, in which the pager section of the radiotelephone section is detachable, characterised in that the terminal is provided with coupling detection means for detecting whether the pager section of the radiotelephone section is uncoupled and, if this is the case, for transmitting an indic
Hunter Daniel S.
Koninklijke PTT Nederland N.V.
Michaelson Peter L.
Michaelson & Wallace
Zewdu Meless
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