JP2823860B2 - Selection signal sending device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an optimum setting of a pause time required for transmission from a private telephone to an office line or switching from pulse signal transmission to tone signal transmission. The present invention relates to a selection signal transmission device that realizes a configuration and the like.

[Conventional technology]

Generally, in a selection signal transmitting device, as shown in FIG. 5, for example, when a specific telephone company or a destination telephone number is input by operating a key on a keyboard 2 provided in a key input section, the key input signal K _i Is converted by the key code conversion unit 4 of the selection signal sending IC 3 and the system control unit 6 gives a write command to the redial memory 8 in response to the key input. Is written to. The written key input is applied to the output control unit 10, and is applied to the pulse signal output unit 12 or the tone signal output unit 14, which is selected in advance according to the line or the partner system. At this time, when the pulse signal output unit 12 is selected, the pulse selection signal PULSE is output according to the key input, and when the tone signal output unit 14 is selected, the pulse selection signal PULSE is output. DTMF of the tone selection signal is transmitted. In either case, since the redial memory 8 stores selection signal data corresponding to the selection signal transmitted immediately before,
The reading is performed by operating the redial key R of the keyboard 2, and the pulse selection signal PULSE or the tone selection signal DTMF can be transmitted again.

In connection with the office line, a pause timer 16 for setting a pause time for the capture or a pause time necessary for switching from transmission of the pulse selection signal PULSE to transmission of the tone selection signal DTMF is provided. ing. That is, when the output control unit 10 detects the key input of the pause key _PA and outputs the pause detection signal SPA, the pause timer 16
Is set to the initial state by the pause detection signal _SPA ,
When dial data end signals DE ₁ and DE ₂ are added from the pulse signal output unit 12 or the tone signal output unit 14, the pause timer 16 starts to be activated from that point. During the pause time, the output wait signals W ₁ and W ₂ are added from the pause timer 16 to the pulse signal output unit 12 or the tone signal output unit 14, and during the period of the output standby signals W ₁ and W ₂ , Output is stopped.

The oscillator (OSC) 18 and the system clock circuit 2
0 forms clock pulses CK ₁ and CK ₂ for system control.

[Problems to be solved by the invention]

By the way, in the conventional selection signal transmission device, a pause operation for temporarily stopping the transmission of dial data is performed based on detection of pause data and mode switching data.
For example, as shown in FIG. 6A, after the dial "1" is inputted, the mode switching key T is operated to switch from the transmission of the pulse selection signal PULSE to the transmission of the tone selection signal DTMF. Next, when the dial “2” is operated,
The output of the pulse selection signal PULSE is, as shown in FIG. 6B, after the pulse selection signal PULSE of the dial "1" is transmitted, and as shown in FIG. _TPA is taken, and tone select signal DTMF is output. Incidentally, T _i denotes the interdigital pause.

When such a pause operation is performed, if there is a long blank during the operation of the dial key, and if the mode switching key is input, the pause data is obtained even though the required pause time has already been secured. Upon detection, a pause operation is performed, which is a dead time.

Further, in the conventional selection signal transmitting device, if there is no dial data after the pause data or the mode switching data, the pause operation is not performed. In this case, as shown in FIG. 7A, following the input of the dial "1", the tone selection signal DTM is converted from the pulse selection signal PULSE to the tone selection signal DTM.
When the mode switching key T for switching to F is operated, a pulse selection signal PULSE is output as shown in FIG. 7B, but after the mode switching key T is operated, a certain time interval is taken. When the dial "2" is operated, C in FIG.
As shown in (1), since the tone selection signal DTMF corresponding to the input of the dial "2" is immediately output, the required pause time _TPA is not secured, resulting in malfunction.

Accordingly, it is an object of the present invention to reduce the dead time during the pause operation and prevent the pause operation from being executed.

[Means for solving the problem]

Select signal transmission apparatus of this invention, as shown in FIG. 1, a pause timer 24 for setting the pause time T _PA in selection signal data transmitted in response to the pause input, the pause timer 24 based on the transmission end of the data When the key input at the time of data transmission is data input, the operation of the pause timer 24 is interrupted.
To maintain the operation of the pause timer 24 to the pause time T _PA termination, in which a pause control means for waiting for subsequent data transmission until the end of the pause time T _PA (pause control unit 26).

[Action]

The operation of measuring the pause time T _PA is performed from the time when the data transmission is completed, and the operation time is accumulated and the pause time T _PA is set. Is increased, and the pause time _TPA is reliably set, so that a malfunction due to non-execution of the pause can be prevented.

〔Example〕

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

Keyboard 2 installed in the key input unit, the pause key with a numeric keypad PA, redial key R, and a mode switching key T, and outputs an input signal K _i corresponding to the input operation.

The key input signal K _i are added to the selection signal delivery for IC3 as a main circuit part of the selection signal sending device, the key code conversion unit 4, a key input signal applied from the keyboard 2 K _i
Is converted into a data code representing a selection signal to be transmitted.

The redial memory 8 temporarily stores selection signal data to be transmitted, and stores final key input data and the like unless there is a next key input.

System control unit 6 gives a writing or reading command C ₂ with respect to the redial memory 8 in response to the key input detection signal C _1, such as controlling readout order, performs system control for all functional units.

The output control unit 10 controls the output of the selection signal of the pulse signal output unit 12 and the tone signal output unit 14, and for example, selects the pulse selection signal PULSE or the tone selection signal DTMF according to the other party. Based on the pulse signal output unit 12
Alternatively, output commands C ₃ and C ₄ are given to the tone signal output unit 14. The carry signals C ₅ and C ₆ are sent from the pulse signal output unit 12 and the tone signal output unit 14 to the redial memory 8.
Has been added.

Further, the output side of the redial memory 8 is pause detection unit 22 for detecting the pause input is provided, the dial data detection signal DA and pause enable signal EA ₁ is obtained from the pause detection unit 22, the pause enable signal EA ₁
Is added to a pause timer 24, and a dial data detection signal DA is applied to a pause control unit 26.

Pause timer 24 is for setting the desired pause time T _PA based on the pose enable signal EA _1, for example, a counter configured in such. C ₇ is a carry signal for the redial memory 8.

Further, the pause control unit 26 includes output end signals E ₁ and E ₂ indicating the end of transmission of data from the pulse signal output unit 12 or the tone signal output unit 14, a dial data detection signal DA from the pause detection unit 22, a redial memory. The start of the pause timer 24 is started on the basis of the busy signal BY from the controller 8 and the operation of the pause timer 24 is interrupted when the key input at the time of data transmission is data input. Is maintained until the end of the pause time, and the subsequent data transmission is waited until the end of the pause time.

Then, for example, as shown in FIG. 2, the pause control unit 26 includes a pulse signal output unit 12 and a tone signal output unit 14.
Output end signals E ₁ and E ₂ from the OR circuit 261 as set inputs of a flip-flop (FF) circuit 262 through a OR circuit 261, and a dial data detection signal DA and a busy signal BY from the redial memory 8 are added to an AND circuit 263 and logically ANDed Take that an
The D output is used as the redial input of the FF circuit 262, and the FF circuit 262
A logic circuit to obtain the pause enable signal EA ₂ shown in FIG. 3 for controlling the pause timer 24 from the inverted output of. The pause enable signal EA ₂ is a pulse signal that rises (H) in synchronization with the end of output (time t ₁ ) and falls (L) at time t ₂ when dial data is detected.
_TPA represents the required pause time.

Therefore, in such a selection signal transmitting device, the fourth
As shown in A of FIG.
Is input, a pulse selection signal PULSE is output as shown in FIG. 4B. After the inter-digital pause _Ti is taken after the pulse selection signal PULSE, the end of the data is detected at this point, and the pause timer 24 is started from this point.

Then, during the pulse count of the pause timer 24, that is, during the clocking operation, the dial "2" is input following the input of the mode switching key T for switching from the transmission of the pulse selection signal PULSE to the transmission of the tone selection signal DTMF. If, by the mode switching key input, counting operation is continued, the necessary pause counting time T _PA is performed.

As shown in C of FIG. 4, after the pause time T _PA, tone selection signal DTMF representing the dial "2" is obtained and outputted from the tone signal output section 14.

In this case, the pause operation is continued because the pause input is given after the input of the dial “1”. However, when the dial “2” is operated after the input of the dial “1”, that is, when the data input is performed. In this case, the timing operation of the pause timer 24, which is a pause operation at that time, is interrupted, and data transmission is immediately performed.

In the embodiment, the pause when switching from the pulse selection signal PULSE to the tone selection signal DTMF has been described. However, a minimum pause time can be secured by a similar operation in a pause such as a normal local line capture.

〔The invention's effect〕

As described above, according to the present invention, the start of the pause timer is started based on the end of data transmission, and when the key input at the time of data transmission is data input, the operation of the pause timer is interrupted. For pause input,
The operation of the pause timer is maintained until the end of the pause time,
Since the subsequent data transmission is made to wait until the end of the pause time, the pause operation can be performed with a minimum pause time, and the efficiency, the shortest, and the optimization of the data transmission including the pause operation can be achieved. Since the pause time can be ensured, it is possible to prevent a malfunction due to the pause and a wrong call.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a selection signal transmitting device according to the present invention. FIG. 2 is a circuit diagram showing a specific configuration example of a pause control unit in the selection signal transmitting device shown in FIG. 4 is a diagram showing the output of the pause control unit shown in FIG. 2, FIG. 4 is a diagram showing the operation of the selection signal transmitting device shown in FIG. 1, and FIG. 5 is a block diagram showing a conventional selection signal transmitting device. FIGS. 6, 6 and 7 show the operation of the selection signal transmitting device shown in FIG. 22: Pause detection unit 24: Pause timer 26: Pause control unit (pause control means)

Claims (1)

(57) [Claims] 1. A pause timer for setting a pause time for selection signal data transmission in response to a pause input, and a start of a pause timer based on completion of data transmission, wherein a key input at the time of data transmission is data input. ,
A pause control means for suspending the operation of the pause timer, and in the case of a pause input, maintaining the operation of the pause timer until the end of the pause time and waiting for the subsequent data transmission until the end of the pause time. apparatus.