DE3205853C2 - Circuit arrangement for a telephone station with message text output (answering machine) - Google Patents

Abstract

The invention relates to a circuit arrangement for a telephone station with message text output, the message text being stored in digital form in a voice memory via a voice synthesizer. With a certain switch position (contact s) of a telephone lock, the message text can be entered or changed. Due to the inventive arrangement of the hook switch contacts (Gu1, Gu2), a call evaluator (RA), a contact of a message button (MT) and the contact (r) of a bistable relay (R), a feed circuit (SP) can be connected to the subscriber line if necessary and in turn, provide the supply voltages necessary for a message text transmission or message text storage. This results in the advantage of a message text change lock for unauthorized persons, an automatic message text connection that can be switched off when a call comes in, as well as an indication of a message text transmission that is currently taking place.

Description

The invention relates to a circuit arrangement for a telephone station with the possibility of message texts to speak and to transmit to the calling subscriber, whereby a station circuit with speech synthesizer, digital voice memory and microprocessor, a feed circuit for the additional components of the Station switching, a piezo alarm clock, a telephone lock, a call evaluation and a message text button are provided are.

It is well known for the transmission of message texts to use magnetic tape recorders on a subscriber calling an unoccupied telephone station, which are switched on by an incoming call and the caller in human language one Send message. The disadvantage of such devices is to be seen in the fact that many movable mechanical Parts must be provided and that the space requirement is relatively large.

It is also generally known to digitally store words spoken via speech synthesizers in speech memories and to have it saved and transmitted by the calling party. Such a circuit arrangement is also known (DE-OS 10 745), the message text to be transmitted from individual text parts already present in the text memory can be put together.

The object of the invention is now to be, for a message text transmission device of the aforementioned Kind to find a simple circuit arrangement in a telephone station, with the help of which to The transmitted texts are saved via the handset and, above all, shows how the supply voltage the individual additional station equipment necessary for such a telephone station is supplied via the subscriber line and prevented unauthorized changing of the message text ίο can be.

This object is achieved in that when a message text is spoken via the handset, firstly the station switching via a first hook switch and secondly the feed switching via a ' second hook switch and an actuated telephone lock contact with the subscriber line are connected that when there is a call (handset on the top) and the message text key is pressed, the a first winding of a bistable relay controlling call evaluation via the message text button, a first layer a contact of the bistable relay, a signal lamp and the first hook switch contact with the subscriber connection line is connected and that after the call evaluation takes effect (reversing of relays

R) the feed circuit is connected to the subscriber line via the second hook switch contact, a second layer of the Koniaktes of the bistable relay, the signal lamp and the first hook switch contact and that the feed circuit for switching back the bistable relay at the end of the message is connected to a second opposite winding of the bistable relay .

This has the advantage that the telephone station also fed when a message text is output or saved via the subscriber line and that an unauthorized person cannot change the stored text. Additionally the status of the message text can be recognized when the handset is open.

The circuit arrangement according to the invention is explained with the aid of a figure.

The figure essentially consists of a station circuit SS, in which the functional units usually contained therein are provided on the outside with a voice synthesizer, a voice memory and a microprocessor, a feed circuit SP, a call evaluation RA, a piezo alarm clock PW, a bistable relay R with its contact r, a signal lamp, the contact of a message button MT, the contact of a telephone lock and the hook switch contacts Gu 1 and Gu 2.

The operation of the circuit arrangement is explained below.

First of all, a message text is to be stored in the voice memory of the station circuit SS by the operator at the subscriber station. To do this, the contact s must be activated using the key on the telephone lock. If the handset is removed, the feed circuit SP is connected to the subscriber line a / b via its input E, the hook switch contact Gu 2 and the telephone lock contact s . From the supply voltage applied via the subscriber line, the supply circuit SP generates the necessary supply voltage for the functional units contained in the station circuit 55, such as voice synchronizer, voice memory and microprocessor. The contact / of the bistable relay R is held in the 1 position. If a text is now spoken over the handset, it will be

digitized with the help of the speech synthesizer and microprocessor control and stored in the speech memory. (Any text that already exists at the storage location will be overwritten). If the storage is finished, the contact s is reset (opened) with the help of the key, which means that no further text input or text changes are possible.If a message text is not required for an incoming call, the contact of the message key M remains open. An incoming call reaches the piezo alarm clock PW via the rest position of the hook switch contact Gu 1 and the 1 position of the r contact. When the handset is then picked up, the station circuit SS is switched on via the hook switch contact Gu 1

If a message text is required for an incoming call, the locking key MT must be pressed. An incoming call thus reaches the signal lamp L and the 1 position of the r contact both to the piezo alarm clock PW and to the call evaluation A4 via the hook switch contact Gu 1. The call evaluation counts the incoming call intervals and switches the contact r into the 2-position via a first winding W 1 of the bistable relay R connected to it after a certain call duration that can be selected in a known manner. The / - contact remains in this position and connects the feed circuit SP via the non-actuated hook switch contacts Gu 1 and Gu 2 with the subscriber line a / b. The latter can thus supply the functional units in the station circuit necessary for a text announcement with voltage and the text transmission takes place via the feed circuit SP and the contacts Gu 2, r (2), Gu 1. The signal lamp L lights up so that an operator who has just returned, for example can recognize an ongoing text transmission. When the handset is picked up, the text transmission is interrupted and a normal voice connection is established.

At the end of the text transmission, a control pulse is emitted by the feed circuit to the winding w2 of the fl relay, which is polarized in opposite directions to the winding ηΊ, so that the contact λ goes into switch position 1 and thus paves the way for a new ringing tone to the piezo alarm clock and prepared for call evaluation RA.

From the above it can be seen that with the aid of the simple circuit arrangement according to the invention is possible to solve the given task.

1 sheet of drawings

Claims (1)

Claim: Circuit arrangement for a telephone station with the possibility of speaking in message texts and transmitting them to calling subscribers, whereby a station circuit with voice synthesizer, digital voice memory and microprocessor, a feed circuit for the additional components of the station circuit, a piezo alarm clock, a telephone lock, a call evaluation and a message text button are provided , characterized in that when a message text is spoken via the handset, firstly the station circuit (SS) via a first hook switch contact (Gu 1) and second the feed circuit (SP) via a second hook switch contact (Gu 2) and an actuated Tülefonschloßkontakt (s) with the Subscriber line (a / b) are connected, that when a call is pending (handset) and the message text key (MT) is pressed, the call evaluation (RA) controlling a first winding (w 1) of a bistable relay (R ) via the message text key (MT), a first layer (1) of a contact (r) d it is bistable relay (R), a signal lamp (L) and the first hook switch (Gu 1) is connected to the subscriber line (a / b) and that after the call evaluation (RA) takes effect (reversing relay R) the feed circuit via the second Hook switch contact (Gu 2), a second layer (2) of the contact (r) of the bistable relay (R), the signal lamp (L) and the first hook switch contact (Gu 1) is connected to the subscriber line (a / b) and that the Feed circuit (SP) for switching back the bistable relay (R) at the end of the message with a second opposite winding (w 2) of the bistable relay (T ^ is connected.