Telecommunication terminal device with visual alarm

 

(57) Abstract:

The invention relates to a visual alarm phone call or other alarm. The technical result is the simplicity of the visual alarm. Telecommunication terminal device includes a visual alarm, which, on the one hand, can be connected through the first diode in the forward direction and the first fork switch with the first residential subscriber line, and on the other hand, it is connected through a second diode in the forward direction to the second conductor of the subscriber line. Between the first diode and a visual signaling device enabled the cathode of the third diode, the anode of which is through the second fork switch and the fourth diode with the same direction of polarity as that of the third diode, may be connected to the first conductor. This allows the visual alarm may be used for visual alarm when a call comes in, and for a different type of visual signaling, for example, alarms with message waiting. To implement solid visual alarm when a call arrives, the anode of the fifth diode is connected to the anode of the second diode and the cathode tool is atodo of the second diode. 8 C.p. f-crystals, 1 Il.

Art

The invention relates to a telecommunication terminal in accordance with the restrictive part of the main claim. From EP 0526715 A1 famous stand, which serves as a support for wireless handset and which through the use of translucent or transparent material can be highlighted by means of appropriately located within the telephone light source drive dialer and in some cases the pin-holder handset. Such lighting may be included, for example, continuously or be used for visual alarm when a call is received.

Advantages of the invention

The advantage of the proposed invention the telecommunication terminal according to the distinctive features of the main claim in comparison with the above device is that the device visual alarms not only signals the incoming call, but can also be used for alarm and in some other cases.

Preferred embodiments of the specified in the main claim of telecommunication is placed preferably the application of the rectifier bridge circuit, thanks to the visual signaling device to be permanently activated with both positive and negative half-wave ringing alternating voltage.

The use of light-emitting elements, in particular LEDs, visual signaling device according to PP. 3 and 4 claims at little cost, technical and financial resources provides a simple implementation of a visual alarm.

According to p. 5 formulas of the invention preferably use resistive-capacitive level (RC-link), which achieves the required visual alarm call is received, the separation circuit DC.

According to p. 6 claims to the anode of the third diode, it is preferable to connect the generator sound ringing pulses. Thanks in parallel with visual alarm when a call is also provided and acoustic alarm, which is due to the locking action of the third diode at other types of signaling and the corresponding polarity both lived subscriber line remains off.

According to p. 7 claims predpochtitelnei off audible and visual alarms.

The advantage of synchronization both fork switches according to p. 8 formulas of the invention is that it provides a definite switch from the alarm mode to talk mode.

Due to the current limitation according to p. 9 for the claims in the light-emitting element is protected from excessive heat, respectively, of the failure.

Description of drawing

Below the invention is explained more on the embodiments thereof with reference to the drawing. The drawing shows an electric circuit control device, a visual alarm.

The description of the example run

In the drawing the position of the 10 marked the first lived subscriber line 10, 11, connected through the first clevis switch 35 to the anode of the first diode 30. The cathode of the first diode 30 is connected through a first resistance 55 to the anode of the first led 1. Consistently the first led 1 is turned on, the second led 2, a third led 3 and the fourth led 4. All four of the light guide 1 to 4, which are one of the possible examples of the visual signaling device have the same direction of polarity. The cathode of the fourth led 4 is connected to the anode of the second diode 60 to the cathode of the third diode 15, the anode of which is in turn through the second fork switch 25 is connected to the cathode of the fourth diode 65. The anode of the fourth diode 65 is connected through a capacitor 45 and a second resistance 40 with the first 10 residential subscriber lines 10, 11. Through the first clevis switch 35 first lived 10 can be connected either with the anode of the first diode 30 or anode of the fourth diode 65. In the latter case, the second resistance 40 and the capacitor 45 are closed short. Through the second fork switch 25 to the cathode of the fourth diode 65 may be connected either with the anode of the third diode 15 or spoken circuit 50. To the anode of the third diode 15 connected to the generator 20 sound ringing pulses. With the anode of the second diode 60 is connected to the anode of the fifth diode 70, the cathode of which is connected to the anode of the fourth diode 65. With the cathode of the second diode 60 is connected to the anode of the sixth diode 75, the cathode of which is connected to the cathode of the fourth diode 65. Through the connection conductor 80 to the anode of the first diode 30 can be attached additional equipment. A second diode 60, the fourth diode 65, the fifth diode 70 and the sixth diode 75 form a rectifier 5 in a bridge circuit.

When unoccupied line first fork switch 35 is enabled in such a way that first the way the cathode of the fourth diode 65 is connected to the anode of the third diode 15. First lived 10 initially is under a negative potential, for example, 48 Century. Second wire 11 has a higher potential, for example 0 C. the First diode 30 is of such polarity in the locking direction, that neither the generator 20 sound ringing pulses or four LEDs 1, 2, 3 and 4 are not activated through the first diode. Since the capacitor 45 is a barrier element for DC, device 1, 2, 3, 4 visual alarm cannot be activated via the third diode 15. Similarly, the current cannot be fed through the second fork switch 25 to the generator 20 a ringing sound impulses.

If the subscriber line 10, 11 to apply a constant positive voltage so that, for example, the potential of the second conductor 11 will remain the same, and the potential of the first conductor 10 will change sign and, therefore, will be in this example, +48 V, then from the first conductor 10 through the first clevis switch 35, the first diode 30, the first resistance 55, four LEDs 1-4 and the second diode 60 will start to flow a current to the second conductor 11, and four LEDs 1-4 will light up. The first resistance 55 is used for the exhaust gas is on the drawing, the anode of the second diode 60 is connected to the reference potential, which must be installed so that the second diode 60 does not have a voltage, thereby preventing the output of this diode failure. Such alarm, due to the constant positive voltage on the subscriber line 10, 11, is used, for example, in alarm mode with message waiting. It is activated when the message is sent, for example an e-mail message. In this case, the alarm informs the subscriber that such a process took place. When the direction of polarity of the third diode 15 prevents the activation and generator 20 sound ringing pulses. The same applies to the condenser 45, which continues to act as a barrier element for DC and thereby prevents the passage of current to the generator 20 ringing sound pulses through the fourth diode 65 and the second fork switch 25.

When a call subscriber line 10, 11 is under the ringing alternating voltage, which is superimposed on the DC voltage of unemployed line. In this case, the capacitor 45 "filter out the DC component of the current, and when crystals 10 through the second resistance 40, the capacitor 45, the second diode 65, the second fork switch 25, the third diode 15, the first resistance 55, four LEDs 1-4 and the second diode 60 to the second conductor 11, and four LEDs 1-4 are lit. Current also flows through the second fork switch 25 to the generator 20 sound ringing pulses, activating it. If the potential on the second conductor 11 is sufficiently higher than the potential on the first conductor 10, the current flows from the second cores 11 through sixth diode 75, the second fork switch 25, the third diode 15, the first resistance 55, four LEDs 1-4, the fifth diode 70, the capacitor 45 and the second resistance 40 to the first conductor 10, and four LEDs 1 to 4 will also be lit. In this case, the current generator 20 is also fed through the second fork switch 25, activating the generator. Because when the alarm caused by the call arrives, the voltage is alternating, alternating change of the potentials on both veins 10 and 11 of the subscriber line 10, 11 leads to such voltages, which is insufficient for current flow through the respective diodes. However, corresponding to the frequency of the ringing alternating voltage and due to the inertia of LEDs 1-4 last AC voltage in absolute value sufficiently exceeds the imposed constant component voltage Unallocated line, equal in this case, -48, temporarily perhaps the passage of current from the first conductor 10 through the first clevis switch 35, the first diode 30, the first resistance 55, four LEDs 1-4 and the second diode 60 to the second conductor 11. However, this does not have a negative impact, because it is expressed only in transient increases in brightness. The brightness of the visual signaling device also depends on the number of LEDs. Obviously, the visual alarm is needed is a single led, however, to increase the brightness increases. As a visual alarm devices can be applied to other light emitting elements such as incandescent lamps. As a visual alarm devices instead of the light-emitting elements can be used and other elements, as, for example, differently colored surface, which, depending on the type of alarm are visible and which, for example, deposited on a rotating cube or a circular disk, and one or the other surface of the cube or the segment of the disk with the appropriate color, for example, visible through the peephole.

Through the connection conductor 80 to the anode of the first diode 30 can be to the connecting conductor 80, you can call recorder or answering machines, which are used for recording the incoming call when not used, respectively, in the unoccupied mode the first line using a switch 35.

You can also forego the use of the fifth diode 70 and/or the sixth diode 75, so that when a sufficiently high potential to the second conductor 11 in comparison with the first housing 10, the current flowing through four LEDs 1-4 impossible. In this case, four diode 1-4 with visual alarm call blinking with a frequency of the ringing alternating voltage, which is an alternative type of visual signaling. The advantage of this type of alarm is that the attention of the subscriber to the incoming call involved would be more effective, accordingly faster.

If, for example, when a call arrives, the user answers the call of the telecommunication terminal, there will be simultaneous switching of both fork switches 25 and 35. Additional equipment connected via the connecting conductor 80, in this case is disconnected from the first conductor 10, and thus from the subscriber line 10, 11, so that when using tape recorders, respectively autoresponders talk is estwenno audible alarm cannot. Due to the switching fork switches 25 and 35 device 1-4 visual alarm and generator 20 a ringing sound impulses are electrically disconnected, in addition, from the subscriber line 10, 11, and thereby turns off. At the same time speaking circuit 50 connects with. the subscriber line 10, 11, so that the subscriber can receive the incoming call via the established communication. Since both fork switch 25 and 35 are synchronized with each other, perhaps a certain mode alarm mode of conversation.

1. Telecommunication terminal with a visual signaling device, wherein the visual alarm device connected through the first clevis switch and the first diode with the first residential subscriber line, and through a second diode in the forward direction is connected with the second residential subscriber lines and between the cathode of the first diode and a visual signaling device enabled the cathode of the third diode, the anode of which is through the second fork switch is connected to the cathode of the fourth diode, the anode of which is connected with the first residential subscriber lines.

2. Telecommunications terminal under item 1, characterized in that the anode of the fifth di connected to the cathode of the fourth diode, and the anode connected to the cathode of the second diode.

3. Telecommunications terminal under item 1 or 2, characterized in that the visual signaling device has at least one light-emitting element.

4. Telecommunication terminal according to any one of paragraphs.1 to 3, characterized in that the light-emitting element is an led.

5. Telecommunication terminal according to any one of paragraphs.1 to 4, characterized in that the first lived subscriber line is connected through a resistive-capacitive link with the anode of the fourth diode, and the second forked switch configured to short out the resistor-capacitive link.

6. Telecommunication terminal according to any one of paragraphs.1 to 5, characterized in that the anode of the third diode connected to the sound generator outside impulses.

7. Telecommunication terminal according to any one of paragraphs.1 - 6, characterized in that the second fork switch configured to disable the generator sound ringing pulses and visual alarm device and connection conversational circuit with the subscriber line.

8. Telecommunication terminal according to any one of paragraphs.1 to 7, characterized in that both fork switch system, for current limiting in front of the light-emitting element is a resistor.

 

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