JPS62230247A - Automatic dialing device - Google Patents

Abstract

PURPOSE:To attain abbreviated dialing or the like without using an exclusive telephone set by using an external adaptor detecting/decoding a dial pulse of a telephone set and outputting a dial signal based on the result of decoding. CONSTITUTION:A DC detection circuit 11 detects a DC current flowing to a pulse telephone set and gives its output to a processing circuit 16. In receiving a detection output, the processing circuit 16 connects a traveling contact of a relay 15 to the position (a) and connects the traveling contact of a relay 14 to the position (b). Thus, a telephone line is connected to a dial signal sending circuit 13 and the telephone set is connected to a DC voltage source 12. In this state, in applying the dialing in response to each mode such as the direct dial mode, abbreviation dial mode or redial mode, the dial input is decoded automatically by the processing circuit 16, processed according to each mode and the dial signal is sent.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an auto-dial device for realizing a redial function and a speed dial function in a telephone communication system.

(Prior Art) In recent years, various functions have been added to telephone communication systems for the convenience of users. A speed dial function and a speed dial function are one example.

Here, the abbreviated dialing function is for dialing a telephone number using an abbreviated number. According to this, the number of dial operations is reduced, and efficient dial input becomes possible.

Furthermore, the redial function is a function in which the telephone number of the other party is memorized when the other party is "busy", and the stored data is used when making a redial call. This feature has the advantage that when making a call back, there is no need to dial the same number again, and the call can be made with a single touch.

゛In this way, the speed dial function and dial function are
Although this is very useful for subscribers in that it improves dialing efficiency, there is currently a problem in that this feature requires the purchase of a dedicated telephone. In other words, no device has been developed that allows you to obtain these functions using your regular telephone.

(Problems to be Solved by the Invention) As described above, in the past, there was a problem in that a dedicated telephone had to be prepared in order to obtain the speed dial function or the dial function.

Therefore, this invention utilizes a normal two-wire telephone,
An object of the present invention is to provide an auto-dial device capable of obtaining a speed dial function and a re-dial function.

[Structure of the invention] (Means for solving problems) In order to achieve the above object, this invention has the following objectives:

means for detecting a direct current flowing through a telephone of the speed dial system, means for decoding the detection output, means for outputting a dialing signal according to the decoding result, and a first means for connecting the telephone to a telephone line according to the decoding result. and a second state in which the telephone is connected to the DC voltage source and the telephone line is connected to the dial signal output means.

(Function) According to the above configuration, the state of the telephone can be detected by the direct current detection means. Therefore, the function of decoding dial input of the telephone can be added to the outside of the telephone rather than inside the telephone. As a result, speed dialing and dialing functions can be realized using a normal telephone without using a dedicated telephone.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention.

In the figure, 'r0. 'r is a terminal to which a pulse dial telephone is connected. Also, Ll, L.

is the terminal to which the telephone line is connected.

11 is a current detection circuit that detects the direct current flowing through the telephone. 12 is a DC voltage source. 13 is a dial signal sending circuit that outputs a dial signal of the telephone number of the other party.

14 is a relay that selectively connects the telephone to the telephone line side or the DC voltage source 12 side. Reference numeral 15 denotes a relay that selectively connects the telephone line to the telephone side or the dial signal sending circuit 13 side.

16 is the detection output of the DC detection circuit 11 and the dial is
2. The speaker is a processing circuit that performs various processes according to the operation of the button 18.

Here, the operation shown in FIG. 1 will be explained with reference to FIG. 2.

FIG. 2 is a flowchart showing the operation when calling the other party by dialing the telephone, that is, when calling the other party by picking up the receiver of the telephone (off-hook).

Figure 2 shows two cases: when calling the other party, you dial the other party's phone number as is (hereinafter referred to as direct dial mode), when you dial an abbreviated number (hereinafter referred to as speed dial mode), and when calling the other party. This assumes a case where the call is made again (hereinafter referred to as redial mode).

Normally, the movable contacts of relays 14 and 15 are terminals a and 15, respectively.
Connected to the b side. This causes the phone to relay 1
It is connected to the telephone line via 4.15 and is waiting for an incoming call.

When the receiver of the telephone is picked up from this state (step S1 in FIG. 2), a direct current flows into the telephone via the telephone line. This means that when on-hook (hanging up the handset),
This is because when the direct current resistance value of a telephone set is IMΩ or more, no current flows through it, but when off-hook (the receiver is picked up), the direct current resistance value drops to 50Ω to 300Ω.

This current is detected by the DC detection circuit 11 (step S
,). This detection output is given to the processing circuit 16. Upon receiving the detection output, the processing circuit 16 first connects the movable contact piece of the relay 15 to the terminal a, and then connects the movable contact piece of the relay 14 to the terminal a.

Accordingly, the telephone line is connected to the dial signal sending circuit 136, and the telephone set is connected to the DC voltage source 12 (Ss, Sm).

By connecting the telephone to the DC voltage source 12, a direct current continues to flow through the telephone. In this state, when a dial operation is performed according to each mode of direct dial mode, speed dial mode, or redial mode, the DC detection circuit 11 detects this, and the dial input is automatically decoded by the processing circuit 16. Then, processing according to each mode is performed (steps, steps S, ~S1°).

That is, the telephone exhibits a high resistance value in a state in which it sends out a dial pulse in response to a dial operation. Therefore, when dial pulses are sent out (in the break state), no current flows through the telephone, and the current detection circuit 11 does not detect any current. Here, the number of dial pulses corresponds to the dialed digits. In other words, the number of periods during which no current flows corresponds to the number dialed in. Processing circuit 16 uses this to decipher the dialed digits.

Each mode is identified according to the codes shown in the table below.

When there is a dial input indicating the code "1", the table processing circuit 16 sends the subsequent dial input, that is, the telephone number of the other party, to the dial signal sending circuit 13. On the other hand, if the code "2" is dialed, the phone number corresponding to the subsequent dialing input, ``-1), and the dialing input of the abbreviated number is read from the memory.
to the dial output path. Further, when a code "3" is dialed, the last sent telephone number is stored in the memory, so it is read out and sent to the dial signal sending circuit 13.

The dialing signal sending circuit 13 sends the dialing signal of the telephone number given from the processing circuit 16 to the telephone line via the relay 15. Thereafter, the processing circuit 16 connects the movable contact piece of the relay 15 to the terminal A, and the movable contact piece of the relay 14 to the terminal a (S1.

SL,). This connects your phone to the phone line and
You can start talking as soon as the other party answers (Step 5)
13).

As described above, in this embodiment, the speed dial function and the dial function are possible, so that the operability of the dial is improved.

Further, this embodiment has an on-hook dialing function in addition to the above-mentioned speed dialing function and continuous dialing function. This uses a dial button that is installed separately from the telephone to call the other party without leaving the receiver on the hook.

Next, the operation when performing this on-hook dialing function will be explained with reference to the flowchart shown in FIG.

If you want to call the other party while on-hook, first,
The sub-kage tongue 18 shown in FIG. 1 is pressed.

Speaker? When the button 18 is pressed, the processing circuit 16 energizes the relay 14.15 to connect the telephone line to the dial signal sending circuit 13 and the telephone to the DC voltage source 12, as shown in FIG.゜S,). After that, when the telephone number of the other party is dialed from the dial button 17, that information is given to the dial signal sending circuit 13 from the processing circuit 16, and the corresponding dial signal is sent from this circuit 13 via the telephone line. is given to the other party (steps 83-84). At this time, the ring tone and the other party's response are played from the speaker 19 (step S).

When it is confirmed that the other party is answering and the receiver is picked up (step S), current flows through the telephone and is detected by the DC detection circuit 11 (Stella f8.). As a result, the processing circuit 16 excites V-14° 15 and connects the telephone to the telephone line (steps ss, so). Therefore, the subscriber can talk to the other party by simply picking up the receiver (step S1°).

Here, an example of a specific configuration of the above-mentioned processing circuit 16 will be explained with reference to FIG. 4.

In FIG. 4, the detection output of the DC detection circuit 11 is input to an arithmetic circuit 161 and a count circuit 162. Arithmetic circuit 161 provides control information for relays 14 , 15 to decoder 164 via state storage circuit 163 when the receiver is picked up and direct current flows. For this purpose, decoder 16
Control signals for relays 14 and 15 are output from 4.

The count circuit 162 counts the number of dial 2 pulses sent out using the DC detection output as a clock during a period when no DC current flows. At this time, the pause period is detected based on the control clock. In this case, the numbers dialed on the telephone are sequentially given to the arithmetic circuit 161 as the count value of the counter 162.

If the information given from the counter 162 is of the direct dial mode, the arithmetic circuit 16 inputs the information from the counter 16.
The telephone number is decoded from the output of 2 and sent to the dial signal sending circuit 13 via the decoder 164. If it is in the abbreviated dial mode, the abbreviated number is decoded from the output of the counter 162, and the corresponding telephone number is read out from the memory circuit 165.

This is then sent to the dial signal sending circuit 13 via the decoder 164. In the redial mode, the previously stored telephone number is read from the memory circuit 165 and sent to the dial signal sending circuit 13 via the decoder 164.

Moreover, the arithmetic circuit 161 is a speaker? When button 18 is pressed, a control signal for relays 14 and 15 is outputted via decoder 163. When the dial button 17 is operated, the telephone number is decoded from the dial input and sent to the dial signal sending circuit 13 via the decoder 164.

To explain the state storage circuit 163 in more detail, this circuit 163 is a circuit that temporarily stores the state currently being processed in the flowchart shown in FIG. 2 or 3. The arithmetic circuit 161 is the state storage circuit 1
Based on the current state stored in 63, the state storage circuit 163 is requested to process data from the DC detection circuit 11, dial button 1, and speaker getter 18 as necessary, and output the next state information. do. State memory circuit 1
63 outputs the next status information to the arithmetic circuit 161 according to the request.
and the decoder 164. The decoder 164 decodes the input status information and provides it to the relays 14.15 and the dial signal sending circuit 13.

As described in detail above, this embodiment decodes the state of the telephone by detecting the direct current flowing through the telephone. Therefore, in this embodiment, dialing inputs such as speed dialing and dialing can be decoded outside the telephone. As a result, the circuit shown in Fig. 1 can be configured as a telephone adapter, and an ordinary telephone can be used to implement speed dialing and dialing functions.In addition, in this embodiment, Since the circuit configuration is simple, it has the advantage that it can be integrated into an information terminal such as a Videotex system.

Note that, of course, the present invention is not limited to the above embodiments.

[Effects of the Invention] According to the present invention, it is possible to provide an auto-dial device that can implement a speed dial function and a dial function using an ordinary telephone.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG.
3 and 3 are flowcharts for explaining the operation of FIG. 1, and FIG. 4 is a circuit diagram showing a specific configuration of a part of FIG. 1. 11... DC detection circuit, 12... DC voltage source, 13
...Dial signal sending circuit, 14.15...Relay, 16...Processing circuit, 17...Dial butane, 1
8...Subikadetan, 19...Speaker.

Claims (1)

[Scope of Claims] Direct current detection means for detecting a direct current flowing through a pulse dial telephone; decoding means for decoding the number of dial pulses from the detection output of the direct current detection means; and dialing signal according to the decoding result of the decoding means. a first state in which the telephone is connected to a telephone line according to the decoding result; a first state in which the telephone is connected to a DC voltage source and the telephone line is connected to the dial signal output means; and a second state.