JPH0681198B2 - Selection signal transmitter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selection signal transmitting device for transmitting a selection signal according to a dial operation of a telephone or the like, and particularly to a selection signal transmitted according to a dial operation. As a signal form, a pulse signal or DTMF (Dual Tone Modulated Fr
eqency) signal, or both.

[Conventional technology]

2. Description of the Related Art Conventionally, a selection signal transmitting device has been used for a telephone, which transmits a selection signal indicating a destination telephone number or other data in response to a dial operation on a keyboard.

This selection signal transmission device is roughly classified into a pulse signal and a DTMF signal (tone signal) as the selection signal to be transmitted. Furthermore, both the pulse signal and the DTMF signal can be transmitted. Also, a configuration (tone pulse dialer) in which either one can be selected by a switch has been put into practical use.

The selection signal transmitting device that can transmit both pulse signals and DTMF signals is compatible with various services using telephones, productivity improvement by common circuit unit of telephone makers, service to consumers, etc. In particular, long-distance telephone services, which are in high demand,
Seat reservation service for transportation such as railways and aircraft, correspondence with financial institutions, computer access, etc.
In order to respond to various telephone services, it is essential to send both pulse signals and DTMF signals as selection signals.

By the way, in this selection signal transmitting device, a redial memory is installed as a storage means for storing the operation content of the keyboard and preparing for the reoperation, and all the input data is stored in this redial memory. Also, this redial memory is composed of a circulating memory that has an appropriate storage capacity by sequentially circulating the stored data according to the input data, and a memory that prohibits writing of the input data when the input data reaches the maximum storage capacity. Has been done.

[Problems to be solved by the invention]

When dial operation is performed in such a selection signal transmitting device, all input data is stored in the redial memory, but when using various services, the calling number of various service providers and the secret code required to receive the service In addition to fixed input data such as, the non-fixed input data whose data content changes for each service such as a service code for instructing the specific service content is stored in the redial memory. is necessary.

Also, in services that require continuous multi-digit key input, there is a risk that the input data will be written to the redial memory if it exceeds the storage capacity, and if the storage capacity of the redial memory is exceeded, the previously stored data will be lost. There is a possibility that the redial function may not be obtained due to rewriting or prohibiting writing of redial data.

Therefore, the present invention is intended to provide a selection signal transmitting device which reduces the amount of data to be stored in the storage means and simplifies the redial operation.

[Means for Solving the Problems] As shown in FIG. 1, the selection signal transmitting device of the present invention has a selection signal data input means (keyboard 2 and keys for inputting arbitrary selection signal data by selecting a key. An input logic circuit 6) and a storage means (shortening / shortening means) for storing the selection signal data input from the selection signal data input means.
Redial memory 14) and data bypass means (data bypass circuit 16) forming a bypass to this storage means and sending the selection signal data to the output side of the storage means
And an input switch installed between the selection signal data input means and the input part of the data bypass means and the storage means for selectively switching the input of the selection signal data to the data bypass means or the storage means. Means (gate circuit 12) and mode detection means (mode detection / switching circuit) for generating a mode detection signal indicating whether the mode of the selection signal to be sent is a tone signal mode or a pulse signal mode.
28) and data write prohibition command means (keyboard 2) for prohibiting data write to the storage means in response to a selection operation.
MS key), and the data write prohibition command from the data write prohibition command means or the mode detection signal from the mode detection means to prohibit the data write to the storage means and enter the prohibition state. And a data switching control means (memory / gate control circuit 48) for switching the input switching means to send the selection signal data to the data bypass means when the transition is made.

[Work]

The selection signal transmitting apparatus of the present invention selects the storage means and the data bypass circuit according to the pulse signal mode or the tone signal mode, and for example, the storage means is switched from the pulse signal mode to the tone signal mode. The storage of the data into the storage means is prohibited, and the data is sent from the data bypass means to the output side of the storage means.

Here, the calling number of each service providing company and the secret code for receiving the service are always fixed input data, but the service code for receiving the specific service after entering the secret code is for each service. It is non-fixed input data that changes to. Then, in such fixed input data and non-fixed input data,
Fixed input data is given in the pulse signal mode.
Therefore, in the selection signal transmitting device of the present invention, the storage of the key input data in the storage means is controlled in accordance with the mode switching from the pulse signal mode to the tone signal mode, and only the fixed input data is stored. Has been achieved.

In the selection signal transmitting device of the present invention, for example, the switching control means outputs a switching signal in response to a specific key operation from the input means or a mode switching input from the external switching circuit to switch the switching means. By doing so, it is possible to easily set the pulse signal mode or the tone signal mode to an arbitrary mode corresponding to a telephone line or the like and perform a call.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of the selection signal transmitting apparatus of the present invention.

In FIG. 1, a keyboard 2 provided as a data input means for selecting signal data is provided with
Key, # key, a pause (P _A) key tone pulses (TP) selection key, a memory write inhibit as a data write inhibit command means (MS) key, a plurality of keys comprising function keys, such as redial (RD) Key Is installed, and in the case of this embodiment, a total of 16 keys are arranged in 4 rows and 4 columns. On this keyboard 2, the ten (10) key, * key, #
Key numeric input, such as the destination telephone number and personal identification number, the pause (P _A) key pause time input in exchange connection with the outside line in the case of a private telephone system, tone pulse (TP)
The selection key is used to switch between tone signal mode and pulse signal mode, the memory write-protect (MS) key is used to write to the memory, the redial (RD) key is used to redial, and the input data of the operated key is , Position information on the horizontal and vertical axes of each key.

The key input data obtained by operating each key of the keyboard 2 is added to a selection signal sending unit 4 which converts the destination telephone number and other information from the key position information into a selection signal and outputs the selection signal.

In this selection signal transmission unit 4, key input data from the keyboard 2 is added to the key input logic circuit 6,
In the key input logic circuit 6, in synchronization with a clock pulse applied from the reference oscillation circuit 8, selection signal data corresponding to a ten-key input at a specific time interval or a signal corresponding to another key input, for example, a memory write inhibit signal. MS,
Outputs tone / pulse selection signal T / P, memory write signal WR, etc. The oscillation frequency of the reference oscillation circuit 8 is set by the natural oscillation frequency of the crystal oscillation element 10 externally attached to the selection signal transmission unit 4.

Then, the selection signal data output from the key input logic circuit 6 is added to a gate circuit 12 as an input switching means for selectively switching the output direction of the data, and the selection signal data passing through the gate circuit 12 has various types. To a data bypass circuit 16 installed as a data bypass means, for example, added to a shortening / redial memory 14 (hereinafter simply referred to as memory 14) installed as a storage means for storing the data of Sent out.

A write pointer 18 for designating a write address for writing data and a read pointer 20 for designating a read address for reading stored data are connected to the memory 14 via a bus line. Light pointer 18
Stores the selection signal data from the gate circuit 12 in a predetermined address of the memory 14 in response to the memory write signal WR applied from the key input logic circuit 6 as a write start signal. The read pointer 20 is installed on the output side of the memory 14 and sequentially reads the selection signal data, which is the stored content, from the memory 14 in response to a read start signal applied from the read circuit 22 that reads the stored data.

The read circuit 22 includes the select signal data read from the memory 14 or the gate circuit 12 to the data bypass circuit 16.
In addition to obtaining the selection signal data output via the private branch telephone, the private branch exchange captures the external line by pressing the pause (P _A ) key after the external line capture signal (for example, 0 dial) when making an external line call from the private branch telephone. The pause control circuit 23 sets the pause time required to
Temporary dial output is stopped. After the pause time, the pause control from the pause control circuit 23 is released and the dial output is restarted.

Each data obtained by the read circuit 22 is added to the pulse output circuit 24 and the DTMF output circuit 26. In this case, in the pulse signal mode, the pulse output circuit 24 is the mode detection / switching circuit 28 as the mode detection means.
Read-out circuit controlled by the switching signal from
A pulse corresponding to each data from 22 is generated, and this pulse is sent from the output terminal 30 to a telephone line (not shown) as a selection signal. Further, in the tone signal mode, the operation of the pulse output circuit 24 is stopped, the DTMF output circuit 26 forms a DTMF signal according to the selection signal data added from the read circuit 22, and the DTMF signal is output from the output terminal 32 as the selection signal. And is similarly sent to the telephone line.

Here, the DTMF output circuit 26 will be described in detail. A frequency divider 34 that divides the clock pulse from the reference oscillation circuit 8 is installed at the input portion of the DTMF output circuit 26, and the divided output is the selection signal data from the read circuit 22. Is added to the high group programmable frequency divider 36A (hereinafter simply referred to as frequency divider 36A) and the low group programmable frequency divider 36B (hereinafter simply referred to as frequency divider 36B) whose frequency division ratio is set by each frequency divider 36A. , 36B are converted into signal data of different frequencies determined by the division ratio set to 36B. In this case, the high group frequencies are f _H1 , f _H2 , f _H3 from the left in correspondence with the horizontal positions of the keys of the keyboard 2, and the low group frequencies are from the top in accordance with the vertical positions of the keys of the keyboard 2. If f _L1 , f _L2 , f _L3 , and f _L4 are set, the frequency division ratios corresponding to the operation keys are set in the frequency dividers 36A and 36B by the selection signal data from the reading circuit 22, so that the operation keys are set in the horizontal direction. Of the high group frequency f _{H1 to} f _H3 representing the position of the group and a clock pulse having a frequency of any of the low group frequencies f _{L1 to} f _L4 representing the position of the vertical direction. Is output. The high group frequency f _{H1 to} f _H3 clock pulses are applied to the high group sine wave counter 38A, and the low group frequency f _{L1 to} f _L4 clock pulses are applied to the low group sine wave counter 38B. the counting of clock pulses 38A in the high group frequency f _H1 ~f _H3, digital sine wave of high frequency group f _H1 ~f _H3 is formed, also in the low group sine wave counter 38B low group frequencies f _L1 ~f _L4 By counting the clock pulses of, the digital sine waves of the low group frequencies f _{L1 to} f _L4 are formed. These high-group and low-group sine waves are individually converted into analog signals by digital / analog converters (D / A) 40A and 40B, and then combined by an adder 42 to form a tone signal. The tone signal is amplified by the output amplifier 44 and taken out from the output terminal 32 as a selection signal.
In this case, the output amplifier 44 is selectively switched to the pulse output circuit 24 by the switching signal of the mode detection / switching circuit 28, and is controlled to the operating state in the tone signal mode. Therefore, in the tone signal mode, the selection signal including the tone signal is output.

Further, the mute output circuit 27 generates a mute signal for prohibiting the transmitter input of the transmitter so that noise from the transmitter does not affect the tone signal when the tone signal is transmitted, and also outputs the pulse signal. At this time, a mute signal for inhibiting the switching noise generated for switching the line from being output to the handset is output, and each mute signal is output from the output terminal 25.

The mode detecting / switching circuit 28 is provided with tone / pulse selection data T / P from the key input logic circuit 6, tone / pulse selection data T / P from the reading circuit 22, or switching provided as external switching means. Either the pulse signal mode (P) or the tone signal mode (T) is detected by any of the tone / pulse selection data T / P from the circuit 46, and the switching signal corresponding to each mode is detected by the pulse output circuit 24 and the output amplifier. 44 together with gate circuit 12 and memory 14 depending on the mode
Is added to the memory / gate control circuit 48 for controlling the control circuit, and a control state according to each mode is set.

The memory gate control circuit 48 includes a mode detection / switching circuit 28.
The output signal of the gate circuit 12 is switched by a switching signal from the key input signal, and the writing of the memory 14 is prohibited by the memory write inhibition signal MS from the key input logic circuit 6.

Therefore, this selection signal transmitting device outputs a selection signal according to the key input data from the keyboard 2 as a pulse signal or a tone signal according to the switching, and from the time when the pulse signal mode is switched to the tone signal mode, The storage of the selection signal data in the memory 14 is prohibited, and the data is sent to the output side of the memory 14 via the data bypass circuit 16. This data is applied to the frequency dividers 36A and 36B of the DTMF output circuit 26, and the frequency dividers 36A and 36B are supplied.
Since the frequency division ratio is set in accordance with the data, the tone signal mode selection signal is output from the output terminal 32. As a result, the storage content to be stored in the memory 14 can be reduced, and the storage capacity of the memory 14 can be reduced.

Further, in this case, even in the pulse signal mode, the stored data can be reduced by selecting and storing only the fixed data portion of the key input data by operating the MS key.

FIG. 2 shows an example of a key input operation and a selection signal transmission program of the selection signal transmission device of the present invention.

In FIG. 2, as in step S ₁ , the handset is removed from the telephone body and the hook switch is turned off (OFF HOOK), or a so-called speakerphone or other handset is integrally formed with the telephone body. When a hook switch is provided separately from the handset such as a telephone, the telephone and the telephone line are connected when the hook switch is turned off. In this state, the calling number of the destination is input from the keyboard 2 in step S ₂ .

Here, the key input data from the keyboard 2 is written in the memory 14 via the key input logic circuit 6 and the gate circuit 12. At this time, if the MS key is not pressed, the memory write inhibit signal MS is not output from the key input logic circuit 6, so that the gate circuit 12 receives the data input to the memory 14 by the gate control signal from the memory gate control circuit 48. Allowed

Then, it is determined whether or not busy by a signal sent from the telephone line to handset in step S _3. For busy, as in step S _4, return the handset to the telephone main body (ON HOO
K), or turn on the hook switch provided separately, and re-input from step S ₁ .

In step S _3, the case is not busy, setting the tone signal mode (T) by the operation of the external switching circuit 46 in step S _5, setting the tone signal mode by the operation of the TP key, or the operation of the MS key, the memory 14 Prohibit storing key input data to. In this case, in step S _6, pressing the MS key on the keyboard 2, a memory write inhibit signal MS from the key input logic circuit 6 is applied to the memory gate control circuit 48, the gate circuit from the memory gate control circuit 48 12 Gate control signal is added to the gate circuit 12
The data passing direction is switched to the data bypass circuit 16. As a result, the key input data from the keyboard 2 after operating the MS key is output from the gate circuit 12 through the data bypass circuit 16 to the output side of the memory 14 across the memory 14.

Then, after operating the MS key, for example a step S ₇ from the keyboard 2, for receiving a particular service, entering the personal identification number set by the agreement with the other party. Step S ₈ based on whether the security code by the recognition means, such as the destination computer is correct is recognized. in this case,
If the PIN is incorrect, enter it again. When the authorized personal identification number has been entered, the service code of the other party is entered in step S ₉ in response to a message from the other party, and a predetermined service is received.

Confirmed the completion of the service in step S _10, if the service is not completed, the process returns to step S _9, enter the service code again, they receive services. Step S
If the service is confirmed to be finished in ₁₀ returns the handset to the telephone body in step S ₁₁ (ON HOOK), or to complete the call in the ON state a hook switch provided separately.

Then, again dial input at step S _12, namely,
It determines whether to redial, if not redial is terminated the selection signal delivery program, in the case of redialing, in step S _13, by entering the destination number just before the completion of the call If you decide whether to make a call and do not output the number of the last party,
Return to step S ₁ and input from the called number of the other party.

Further, when outputting the destination number of the immediately preceding After calls, the handset removed in step S ₁₄ (OFF HOOK), or, in the OFF state a hook switch which is provided separately, the keyboard 2 in step S ₁₅ By operating the RD key of, the operations from step S ₁ to step S ₆ can be omitted and a call with the other party can be started.

Regarding the transmission of such a selection signal, an example of various service forms is as follows.

(A) Long-distance telephone service Long-distance telephone company Call number input (pulse signal or tone signal) → MS key operation (in pulse signal mode) →
Personal identification number (tone signal) → destination call number (tone signal) In this case, the long-distance telephone company call number (pulse signal or tone signal) is fixed data, so it is stored in the memory 14, and other data is bypassed. It is sent to the output side of the memory 14 via the circuit 16.

(B) Business services of financial institutions (banks, securities companies, etc.) Input of calling number (pulse signal or tone signal) of financial institutions → MS key operation (in pulse signal mode) → PIN (tone signal) → Service Code (tone signal) In this case, since the calling number (pulse signal or tone signal) of the financial institution is fixed data, it is stored in the memory 14,
Other data is stored in memory via the data bypass circuit 16.
Send to 14 outputs.

(C) Services such as seat reservations for transportation facilities such as railroads and aircrafts Input of calling number (pulse signal or tone signal) such as seat reservation → MS key operation (in pulse signal mode) → Service code (tone signal) Since the calling number (pulse signal or tone signal) such as seat reservation is fixed data, it is stored in the memory 14,
Other data is stored in memory via the data bypass circuit 16.
Send to 14 outputs.

(D) Computer access Input of computer company call number (pulse signal or tone signal) → MS key operation (in pulse signal mode) →
Personal identification number (tone signal) → data (modem) In this case, since the computer company calling number (pulse signal or tone signal) is fixed data, it is stored in the memory 14, and other data is stored in the memory via the data bypass circuit 16. Send to 14 outputs.

Needless to say, in addition to these various services, it is possible to talk with the other party by a normal dial operation.

Further, although the embodiment has been described in which both the tone signal and the pulse signal can be transmitted as the form of the selection signal and both are selectable, the present invention is fixed so that only one of them is transmitted. It can also be applied to food items.

〔The invention's effect〕

As described above, according to the present invention, the storage means and the data bypass means are selected according to the pulse signal mode or the tone signal mode. For example, when the pulse signal mode is switched to the tone signal mode, Since the data is prohibited from being stored in the storage means and the data is sent from the data bypass means to the output side of the storage means, only the necessary data portion such as fixed data in the input data is selected and stored. Because it can be
The data to be stored in the storage means can be reduced, and the storage means with a small storage capacity can be used. Also, even in various services that require multi-digit input, there is no inconvenience such as rewriting of the stored content or write protection, and redial operation can be performed. Simplification can be realized.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a selection signal transmitting apparatus of the present invention, and FIG. 2 is a flow chart showing its operation and a selection signal transmitting program. 2 ... Keyboard (selection signal data input means) 6 ... Key input logic circuit (selection signal data input means) 12 ... Gate circuit (input switching means) 14 ... Shortening / redial memory (storage means) 16 ... Data Bypass circuit (data bypass means) 28 …… Mode detection / switching circuit (mode detection means) MS …… Memory write inhibit key (data write inhibit command means) 48 …… Memory / gate control circuit (data switch control means)

Claims (1)

[Claims] 1. A selection signal data input means for inputting arbitrary selection signal data by selecting a key, a storage means for storing the selection signal data input from the selection signal data input means, and a storage means for the storage means. Is installed between the data bypass means for forming a bypass and sending the selection signal data to the output side of the storage means, and the selection signal data input means and the input part of the data bypass means and the storage means. Input switching means for selectively switching the input of the selection signal data to the data bypass means or the storage means, and a mode detection signal indicating whether the mode of the selection signal to be sent is a tone signal mode or a pulse signal mode. Mode detection means, and data write prohibition command means for prohibiting data write to the storage means in response to a selection operation In response to the data write prohibition command from the data write prohibition command means or the mode detection signal from the mode detection means, the data write to the storage means is prohibited, and when the prohibited state is entered, the input And a data switching control means for switching the switching means to send the selection signal data to the data bypass means side.