JPH08321868A - Calling device - Google Patents

Abstract

PURPOSE: To prevent a third person from knowing dial data after the depression of a tone key by not storing dial data after the tone key is depressed. CONSTITUTION: After the head address of a redial buffer in RAM 6B is obtained it is judged whether or not data of the head address is an end code and data for the portion of one byte is transferred from the redial buffer to a dial buffer unless it is a tone code. Then, one increment is executed in a pointer indicating the address of the redial buffer. When it is the tone code, data for the portion of one byte is transferred from the redial buffer to the dial buffer. Then, a pulse selecting signal is transmitted through the use of the pulse dialler of NCU 8 under the control of a control part 1 based on data of the dial buffer. Dial data at this time is stored as data expressing the depression of the tone key 4C for the ninth time and a dial is called concerning only data which is previously called by the pulse dialler.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is capable of switching dial signals to be transmitted by pressing a certain key, and further storing a dialed number and pressing a certain button. The present invention relates to a calling device having a function of calling again a previously dialed number.

[0002]

2. Description of the Related Art Conventionally, in this type of calling device, when a specific key (hereinafter referred to as a redial key) is pressed every time dialing, the same dial is made based on the data relating to the immediately preceding call. I was calling.

Further, when a certain specific key (hereinafter referred to as a tone key) is used, when a tone key is pressed in a calling device set for a pulse dial line, when the dial key is pressed thereafter, a tone is given. It will start sending signals.

[0004] In general, when making a call using a tone key, for example, when listening to the contents of an answering machine at home from outside, or when confirming the transfer status using a bank answer system. It is used.

[0005]

However, in the above-mentioned prior art, in the calling device set for the pulse dial line, the tone key is pressed, and the tone signal is transmitted by pressing the dial key thereafter. In this case, when the redial key is pressed in the next call, the previous dial data is sent as it is.

In this case, when the answer system of the bank is used with the tone keys as described above, the password and account number are stored by the redial function, and the password is pressed by pressing the redial key. There is a risk that the number and account number will be known to a third party.

It is an object of the present invention to provide a calling device capable of preventing the dial data by the tone key from being known to a third party by the two functions of the tone key and the redial key.

[0008]

According to the present invention, a dial key for selecting a selection signal to be sent to a line, a tone key for switching a selection signal to be sent to a line from a pulse to a tone, and a previously sent dial are sent again. A redial key, a calling means for transmitting a pulse or tone selection signal to the line, and a first storage means for storing that the connection to the pulse line is stored.
Second storage means for storing previously sent dial data, and third storage means for storing data for dialing
When the data including the tone key is stored in the previously transmitted dial data stored in the second storage means, the dial data is pressed by pressing the redial key means. When sending
Among the data stored in the second storage means, the data after pressing the tone key is not transferred to the third storage means.

[0009]

According to the present invention, since the dial data after pressing the tone key is not stored, the dial data after pressing the tone key will not be known to a third party.

Also in the tone line, by enabling this tone key and not storing the dial data after pressing the tone key, the dial data after pressing the tone key will not be known to a third party.

[0011]

1 is a block diagram showing the configuration of a facsimile apparatus according to an embodiment of the present invention.

The system control unit 1 is composed of, for example, a microcomputer 1A, a storage circuit, and the like, and has a ROM 1B in which the control program shown in FIG. 3 is stored in advance, a numeric keypad, a redial key, and a tone key in the operation unit. It includes.

The reading unit 2 is a contact sensor for reading a transmission document conveyed by a document table and document conveyance rollers,
A DS (Document Sensor) that determines the presence or absence of a document and a DES (Document E) that determines whether the document is at the reading position
After being subjected to image processing by the read image processing circuit GENESIS3, it is stored in the read buffer in the RAM 6B by the DMA controller which is a peripheral circuit of the microcomputer 1A. The image data stored in the read buffer is encoded line by line by the microcomputer 1A according to the control program, and stored in the RAM 6B as image data.

The recording unit 3 decodes one image stored in the RAM 6B line by line by the microcomputer 1A, and transfers data to a printer 3A such as an ink jet printer connected by an interface means such as a Centro interface. And the printer 3A performs a printing operation according to the sent data.

The operation section 4 has various operation keys arranged therein. FIG. 1B shows the appearance of the operation unit 4. The operation unit 4 includes a dial key 4A and a redial key 4 for performing a calling operation used in this embodiment.
B, tone key 4C, start key 4D are arranged, and L
The display unit 4E such as a CD is also a means for notifying a display by pressing a key or an operation status of the entire device.

The RAM 6A registers communication data such as its own telephone number, user abbreviation and telephone number of the other party, and the type of line (pulse line or tone line) to which its own device is connected, and stores those data. It is a non-volatile RAM in which a checksum is registered. The RAM 6A uses a non-volatile memory backed up by a battery.

The RAM 6B is an image memory for storing communication data at the time of reception, a work area including a dial buffer and a redial buffer used by the control program, and a received or read image data.

Although volatile RAMs are used as these RAMs in this embodiment, hard disks may be used.

The modem (modulation / demodulation device) 7 modulates / demodulates a transmission / reception signal and also has a function of transmitting a tone selection signal. The image data stored in the RAM 6B as image data using the modem 7 is stored in a communication buffer in the RAM 6B while being decoded line by line by the microcomputer 1A. The data stored in the communication buffer is again encoded line by line and transferred to the modem 7 byte by byte, and the modem 7 modulates as a transmission signal and sends it to the NCU 8.

The NCU (network control unit) 8 has a function of transmitting a selection signal (pulse dialer) and an auxiliary handset 10.
On-hook and off-hook detection functions, automatic ringing operation by detecting ringing tone, and line control operation, and by the control of the system control unit 1, a selection signal is sent to the telephone line 9 to transfer data from the modem 7. Send to the line.

The reset circuit 11 is a watchdog timer circuit that operates by stopping the system clock from the system control unit 1, and outputs a reset signal to the system control unit 1 when the power is turned on or an abnormal operation occurs.

FIG. 2 shows the generation of dial data controlled by the control unit 1 when the redial key 4B is pressed when the auxiliary telephone 10 is off-hook next.

First, depending on the type of line stored in the RAM 6A, when the line to which the own device is connected is a pulse line and the attached telephone 10 is off-hook, the NCU
8 detects the off-hook, the dial data pressed by the dial key 4A is transferred to the dial buffer in the RAM 6B, and the NCU 8 is controlled under the control of the control unit 1.
The pulse selection signal is transmitted using the pulse dialer.

The dial data at this time is shown in FIG.
As shown in FIG. 9, if the data (0FH) representing the depression of the tone key 4C is stored in the ninth place, all the subsequent data will send the tone selection signal. Also,
When the on-hook of the attached telephone 10 is detected, the contents of the dial buffer are transferred to the redial buffer in the RAM 6B under the control of the control unit 1, and the end code (0FFH) representing the data is stored in the last 1 byte.

The dial operation in this system will be described below.
The operation of the tone key and the redial key will be described with reference to the redial data transfer flowchart shown in FIG.

First, in S1, the head address of the redial buffer in the RAM 6B is acquired. In S2, RA
Acquire the start address of the dial buffer in M6B.

Next, in S3, the data of the head address of the redial buffer in the RAM 6B is set to the end code (0
FFH). If it is an end code, the process proceeds to S9, and if it is not the end code, the process proceeds to S4.

At S4, it is determined whether the data is a tone key. If it is a tone code, the process proceeds to S8, and if it is not a tone code, the process proceeds to S5.

In S5, 1-byte data is transferred from the redial buffer to the dial buffer. And
In S6, the pointer indicating the address of the redial buffer is incremented by 1, and in S7, the pointer indicating the address of the dial buffer is incremented by 1, and S3
Move to.

In S8, 1-byte data is transferred from the redial buffer to the dial buffer. And
In S9, the end code is stored in the dial buffer.

Based on the data in the dial buffer, under the control of the control unit 1, the pulse dialer of the NCU 8 is used to send out a pulse selection signal. As shown in FIG. 2 (2), the dial data at this time stores the data (0FH) indicating that the tone key 4C is pressed at the ninth position, and since the next data is the end code, the dial dials the pulse dialer before. Only the data called by is called.

In the above embodiment, only the case where the data is not called after the tone key is pressed is described.
Not limited to this.

As a second embodiment, for example, in the dial data generated from the redial buffer in the RAM 6B, when the data is stored in the dial buffer, the data representing the tone key is replaced with, for example, the data representing the password input (0EH), and the subsequent tone is reproduced. When the dial data is also stored, a pulse selection signal is transmitted using the pulse dialer of NCU8.

The dial data at this time is shown in FIG.
As shown in, when the data (0EH) indicating the password is pressed is stored in the ninth position, a message prompting the user to enter the password is displayed at this data, and when the password is entered here, the previous tone is dialed. The tone data will not be called unless the correct password is entered.

Further, in the above embodiment, the data is stored in another storage means for transmitting the data after the redial key is pressed, but the present invention is not limited to this. For example, as a third embodiment, it may be considered that the data after the tone key is pressed cannot be called in the redialing buffer.

In the third embodiment, the case where the data is not called after the tone key is pressed is described, but the present invention is not limited to this.

For example, as a fifth embodiment, if there is data representing a tone key in the dial data generated from the redial buffer in the RAM 6B, NC
A pulse selection signal is transmitted using the U8 pulse dialer.

The dial data at this time is shown in FIG.
As shown in, if the 9th data (0EH) representing the tone key press is stored, a message prompting the user to enter the password is displayed at this data, and if the password is entered here, the previous tone is dialed. The tone data is not called unless the correct data is transmitted and the correct password is entered.

Further, in order to send the data after pressing the redial key, the data is stored in another storage means, but the present invention is not limited to this. There may be a case where the data after pressing the tone key cannot be called in the redial buffer.

Further, in the above-mentioned embodiment, the tone key is used for switching from the pulse dial to the tone dial, but it is not limited to this. For example, as a fifth embodiment,
By enabling the tone key on the tone line,
It is also possible not to call the dial after pressing the tone key or to prompt for a password.

[0041]

As described above, according to the present invention,
By not storing the dial after pressing the tone key, it is possible to prevent the dial data after pressing the tone key from being known to a third party.

[Brief description of drawings]

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

FIG. 2 is an explanatory diagram showing contents of a dial buffer of the above embodiment.

FIG. 3 is a flowchart showing the operation of the above embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... System control part, 2 ... Reading part, 3 ... Recording part, 4 ... Operation part, 6 ... RAM, 7 ... Modem, 8 ... NCU, 9 ... Telephone line, 10 ... Attached telephone, 11 ... Reset circuit.

Claims (4)

[Claims] 1. A dial key means for selecting a selection signal to be sent to a line, a tone key means for switching a selection signal to be sent to a line from a pulse to a tone, and a redial key means for sending a previously sent dial again. A calling means for sending a pulse or tone selection signal to the line, a first storage means for storing that the connection to the pulse line is stored, and a dial data previously sent. A second storage means for storing the dial data, and a third storage means for storing data for dialing, and the tone key is included in the previously sent dial data stored in the second storage means. When data including means is stored, when the dial data is transmitted by pressing the redial key means, the data is stored in the second storage means. Calling device, characterized in that the not transferred to the third memory means data after pressing the tone key means of data being. 2. A dial key means for selecting a selection signal to be sent to the line, a tone key means for switching the selection signal to be sent to the line from a pulse to a tone, and a redial key means for sending the previously sent dial again. A calling means for sending a pulse or tone selection signal to the line, a first storage means for storing that the connection to the pulse line is stored, and a dial data previously sent. The second storage means, the third storage means for storing data for dialing, and the fourth storage means for storing password data. When the data including the tone key means is stored in the previously sent dial data stored, the redial key means is pressed to press the dial key. When sending a Rudeta, calling device, characterized in that not transmitted have to enter the password data after pressing the tone key means among data stored in said second storage means. 3. A dial key means for selecting a selection signal to be sent to the line, a tone key means for switching the selection signal to be sent to the line from a pulse to a tone, and a redial key means for sending the previously sent dial again. A calling means for sending a pulse or tone selection signal to the line, a first storage means for storing that the connection to the pulse line is stored, and a dial data previously sent. And a second storage means for storing the redial key means when the data including the tone key means is stored in the previously transmitted dial data stored in the second storage means. Data after pressing the tone key means among the data stored in the second storage means when dial data is transmitted by pressing Calling apparatus characterized by not transmitted. 4. A dial key means for selecting a selection signal to be sent to a line, a tone key means for switching the selection signal to be sent to a line from a pulse to a tone, and a redial key means for sending a previously sent dial again. A calling means for sending a pulse or tone selection signal to the line, a first storage means for storing that the connection to the pulse line is stored, and a dial data previously sent. A second storage means for storing the tone key means in the tone line.
A calling device characterized in that, when the redial key means is pressed, the data after pressing the tone key means is not called.