JPH05236081A - Automatic dialing device and paging receiver with automatic dialing function - Google Patents

Abstract

PURPOSE:To enable a call by means of a credit call only when making call to a specified address. CONSTITUTION:In a paging receiver, a plurality of call destination telephone numbers and credit call telephone numbers are stored in a telephone number storage memory section 32 and a discrimination flag indicating validity of the credit call use for the call destination telephone number in an identification flag area 32a. In the case of selecting and designating the telephone number in the section 32 at the time of transmission, the validity of credit call use is discriminated based on the identification code added to the telephone number, and performing the normal dialing operation or the auto-dialing operation by means of the credit call. Therefore, the use of credit call is enabled only when making call to the destination enabled by an identification flag, and the use of credit calls is inhibited for the other call destination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic dial device and a paging receiver having an automatic dial function.

[0002]

2. Description of the Related Art Recently, in a wireless paging system, not only a service for calling by a selective call signal but also a service for sending message information following the selective call signal and displaying this message information on a display unit of a receiver is provided. It is becoming popular. This system is widely used as a business contact means for outside workers, and the message information is often contact information such as a telephone number.

For this reason, there has been proposed a paging receiver with an automatic dial function, which is provided with a dial sound (dial signal sound used in a touch-tone telephone). This paging receiver with auto-dial function generates the dial tone of the contact telephone number received as message information or the telephone number selected from the telephone number memory, and inputs this dial tone from the mouthpiece of the touch-tone telephone. This makes it very convenient to make a call without operating the buttons of the touch-tone telephone. In particular, paging receivers with an auto-dial function equipped with a telephone number memory are not the telephone number itself as contact information, but a convention between the calling and called parties, such as a one-digit number for each telephone number. By allocating, the purpose can be achieved by sending only simple information.

[0004]

However, when the called party calls a contact specified by the calling party and uses a public telephone, a coin must be inserted into the telephone, which is extremely difficult. There is a problem that it is troublesome and that coins must always be prepared.

[0005] Further, there is a problem in that the telephone charges for making a phone call as a work are settled when returning to the office, but are unclear because they are self-reported. There is also a method in which the company supplies employees with a telephone card for business use,
It is not actually used because it may be used for private use.

Further, conventionally, as an auto dial device,
A phone number for credit calls is stored in advance to enable cashless calls, and a dial tone is generated by combining the credit call phone number and the phone number selected from the phone number memory when dialing. There is. However, this automatic dialing device can use credit calls for all telephone numbers stored in the telephone number memory, and thus, for example, when the company lends to an employee to use the telephone number. Credit calls may be abused.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic dialing device capable of making a call using a credit call only when calling a contact designated in advance. And

Further, according to the present invention, when a message is received from a caller to call a contact, only a contact permitted by the caller can be called using a credit call. It is intended to provide a paging receiver with an auto dial function that can be performed.

[0009]

According to the present invention, when writing the contact telephone number in a telephone number storage memory for storing a plurality of contact telephone numbers and credit call telephone numbers in an auto dial device. Add an identification flag indicating whether to use credit call to
When a telephone number in the above-mentioned telephone number storage memory is selected and designated at the time of transmission, whether or not a credit call can be used is judged by the identification code added to the telephone number, and a normal dial operation or a dial operation by a credit call is performed. It was done like this.

Therefore, the credit call can be used only when the contact is permitted by the identification flag, and the use of the credit call is prohibited for other contacts.

Further, according to the present invention, in the paging receiver with an auto dial function, when writing the contact telephone numbers to a telephone number storage memory for storing a plurality of contact telephone numbers and credit call telephone numbers, respectively. When an identification flag indicating whether or not a credit call can be used is added and a call is made to a contact in accordance with a message from the caller, the identification code attached to the telephone number is used to judge whether or not a credit call can be used. The dial operation or the dial operation by a credit call is performed.

With the above configuration, when calling a contact according to a message from a caller, etc., it is possible to use a credit call only to a contact who has been authorized in advance, and the credit can be used. Abuse of calls is prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

First, the external structure of the paging receiver according to the present invention will be described with reference to FIG. 1 in the figure
Is a case, and the display unit 2 configured by using, for example, a liquid crystal display element is provided on the front surface of the case. The display unit 2 is composed of an upper display area 2a and a lower display area 2b, and can display the time, message and the like. Also,
On the front surface of the case 1, a keyboard 3 is provided below the display unit 2. This keyboard 3 has ten keys 4,
A shift key 5, a mode key 6, a memory read key 7, a transmission key 8, a paging function on / off switch 9, and an LED 10 for optically calling the paging receiver are provided.

The numeric keypad 4 is a double function key, and numerical values and alphabets can be switched by the shift key 5 and input. Mode key 6
By pressing the button, four modes of (1) .clock mode, (2) .message display mode, (3) .telephone number display mode, and (4) .telephone number writing mode are sequentially designated. The memory read key 7 is a key for sequentially reading the message information received or recorded or the registered name and its telephone number by designating the address of the internal memory. The memory read key 7 is also used as an address designation key when writing a telephone number in the memory. The transmission key 8 is a key for starting transmission of a designated telephone number by dial tone. The paging function on / off switch 9 is a switch for turning on / off only the message receiving function.

In the display unit 2, the mode key 6 is used to display (1). When the clock mode is designated, the current time is displayed in the upper display area 2a, and (2). The message display mode is designated. If the message is received in the upper display area 2a, the calling number of the memory, the call category information and the received message are displayed in the lower display area 2b. (3). If the telephone number display mode is specified, the upper display area Two
The name read from the memory is displayed in a, and the registered telephone number read from the memory is displayed in the lower display area 2b. (Four).
When the telephone number writing mode is designated, the name entered by key entry is displayed in the upper display area 2a, and the telephone number set by the numeric keypad 4 is displayed in the lower display area 2b.

Next, the electronic circuit provided in the case 1 will be described with reference to FIG. In the figure, reference numeral 11 denotes an antenna, which receives a radio wave output from a wireless base of a message service company and inputs it to the receiving unit 12. As the radio waves output from the wireless base of the message service company,
For example, FM radio waves of 280 MHz are used. This FM
The radio wave is modulated by the FSK signal (NRZ) system and contains information of a bit rate of 512 bits / sec.

The receiving section 12 is composed of a selection circuit for selecting a 280 MHz signal, a demodulation circuit for demodulating an FSK signal, etc., and demodulates the FM signal of the FSK to "0",
The signal of “1” is output to the decoder unit 13. Also,
An ID-ROM 14 storing its own identification code is connected to the decoder section 13. The decoder unit 1
3 refers to the ID-ROM 14 to determine whether or not it is the calling number of its own by analyzing the data by the POCSAG method, and if it is the calling number of its own, it is attached to the calling number. The CPU 15 outputs to the CPU 15 a reception fetch command for receiving the message data following the call type information and the call number. A key input unit 16 and a RAM 17 are connected to the CPU 15, and the display unit 2 is connected via a display buffer 18.

The key input unit 16 is used for the keyboard 3
CPU sends signals corresponding to the operation of each key
Enter in 15. The RAM 17 is a memory for storing a message from a caller and also for storing a plurality of telephone numbers or the like input from the ten-key pad 4, the details of which will be described later. In addition, the CPU 15 is provided with an LED drive unit 21, a sound signal generation unit 22, and a DTMF signal sound (Double signal).
Tone Multi Frequency: A dial signal tone generator 23 used in a touch-tone telephone and a buffer 24 for temporarily storing dial data are connected. And
The LED 10 is connected to the LED drive section 21, and the speaker 25 is connected to the sound signal generation section 22 and the DTMF signal sound generation section 23. The speaker 25 is provided on the back side of the case 1, for example. The sound signal generator 22
When the call from the caller is received, the CPU 15
The speaker 25 is driven in accordance with a command from the terminal to notify the incoming call, and the DTMF signal sound generator 23 generates a DTMF signal based on the dial data set in the buffer 24 and drives the speaker 25 to generate a dial sound. ..
After the dialing is completed, the DTMF signal tone generator 23 sends a CP
An end signal is sent to U15. Next, an outline of the poxag method used in the paging receiver will be described. 3A to 3D are data configuration diagrams of the Pokusag method.

FIG. 3A shows the entire transmission signal format, which is 576 in the poxag method.
Bit data of bits is composed of 101010, a preamble signal A that successively follows, and a plurality of batch signals B, C ,. The preamble signal is a signal for causing the paging receiver to recognize that data will be sent from now on and for bit synchronization, and the decoder unit 13 detects this preamble signal and prepares for receiving subsequent batch data.

FIG. 3B shows a batch format of the above batch data. This batch format has a 1-word sync code SC first, followed by eight frames CD1 to CD8 each of which is a 2-word code. Each codeword has a 32-bit structure, and the codeword includes an address codeword and a message codeword.

3C and 3D respectively show the structure of the address codeword and the message codeword. FIG. 3C shows an address code word, which has a message flag at the beginning, an address code, a function bit, a BCH parity, and an even parity.

The message flag is a flag for identifying whether the next code is an address code or a message code, and when "0", the address code word,
When it is "1", it represents a message codeword.
The 2nd to 19th bits after the message flag are the address code, which corresponds to the above-mentioned calling number. Furthermore, there are two function bits after this. This is a bit for indicating the display form and the report sound form, and there are four types of functions, for example, "00", "01", "10", and "11". This function information can be input by the caller using a touch-tone telephone by making a contract with the message company, and can also be used for identifying the caller.

In the Pokusag method, an error may occur inside one code, for example, an address code. In particular, when the reception state is bad, the demodulation of the FSK signal is not complete and an error occurs. To correct it, BCH parity is provided in bits 22-31. After that, an even parity bit is provided. This even parity indicates whether the total number of bits from the beginning to the end representing the number of "1" is an odd number or an even number.

In the case of the message codeword shown in FIG. 3D, a message bit is added after the message flag. This is in addition to the message from the calling party, for example the telephone number and other information. Similarly, BCH parity data and even parity data are added to the same codeword to form a message codeword.

FIG. 4 shows the details of the RAM 17 in FIG. In the RAM 17, a buffer register BU for temporarily storing the received message, a mode counter M for designating a mode, timers T1, T2, a RAM 17
A pointer P for designating an address of a specific area in the memory, a timing register 30, a FIFO for storing a received message
A system message register section 31, a telephone number storage memory section 32 for storing a telephone number input from the key input section 16, and a credit call memory section 33 for storing a credit call telephone number are provided.

The mode counter M is set to the clock mode when the count value is "0", the message display mode when the count value is "1", the telephone number display mode when the count value is "2", and the telephone number writing mode when the count value is "3". specify. The pointer P is
It is for designating each address of the clock register 30, the message register unit 31, and the telephone number storage memory unit 32. The timer T1 is for controlling the notification time of an incoming call by the LED 10 and the speaker 25 when a call signal from a caller is received, and measures the elapsed time of, for example, 8 seconds. The timer T2 is for controlling the display time of the received message when the call signal is received, and measures the elapse of 30 seconds, for example.

The clock register 30 is for counting the current time and is provided at the address 0 (relative address). Further, the message register unit 31
Is provided at addresses 1 to 30, and the call type information and the arrival time are stored in each address together with the received message. The message register section 31 has a FIFO type buffer structure. When the received message once stored in the buffer register BU is written in the register at address 1, the storage information of each register is sequentially transferred to the register at the next address. Shifted and final 3
The message held in the register at address 0 is pushed out and disappears.

Further, the telephone number storage memory unit 32 has three
It is provided at addresses 1 to 50 and stores the telephone number and the name input from the key input unit 16 in the writing mode, respectively. Further, at each address of the memory 32 for storing the telephone number, a credit call identification flag area 32 for determining whether or not the credit call can be used.
a is provided so that the identification flag can be set when writing the telephone number. In this case, the identification flag can be written in a secret manner on the side that lends the paging receiver to an employee or the like. For example, when the writing mode is designated by the mode key 6 and the telephone number of the contact is written in the telephone number storage memory section 32, the identification flag can be set in the identification flag area 32a by using the password. Becomes
When the identification flag is "1", the use of the credit call is permitted, and when the identification flag is "0", the use of the credit call is prohibited.

In the credit call memory section 33, the credit call telephone number in which a stop code for stopping the generation of the dial tone for a predetermined time due to the second dial tone or the like is inserted at a predetermined position is written. This credit call telephone number can be written secretly in advance on the side that lends the paging receiver, as in the case of the above identification flag. For example, after the writing mode is designated by the mode key 6, the address of the credit call memory unit 33 is designated by using the password, and then the credit call telephone number can be written by the ten keys 4.

Next, the operation of the above embodiment will be described with reference to the flowchart of FIG. In the RAM 17, the caller side has a telephone number storage memory 32 and an identification flag indicating whether or not a credit call can be used together with the telephone number of the contact, and the credit call memory unit 33 receives a credit. It is assumed that the call telephone number is written. The CPU 15 (1) receives a call from the caller, (2) performs a timekeeping process, and (3)
When the key operation is performed, the processing shown in the flowchart of FIG. 5 is executed.

Now, assuming that the call from the calling party is received by the receiving unit 12 and the call is its own calling number, the decoder unit 13 sends a receiving and fetching command to the CPU 15. This causes an incoming call interruption and the CPU
Reference numeral 15 proceeds from the HALT state in step A1 in FIG. 5 to step A2, in which the call type information (function bit information described above) associated with the calling number, the message information and the arrival time information are fetched and the buffer register in the RAM 17 Temporarily store in BU. The information fetched in the buffer register BU is then transferred to the message register section 31 and stored in the address 1 (step A3). At this time, the information held up to that address of the message register unit 31 is sequentially shifted to the next address. That is, the latest reception information is always written and held in the address 1 of the message register unit 31.

Next, whether or not dialing is in progress, that is, DTM
The F signal sound generator 23 determines whether or not the dial operation is being performed (step A4). If not dialing, the CPU 15 sends an operation command to the sound signal generator 22 to cause the speaker 25 to operate at a predetermined frequency. It is driven to notify the incoming call (step A5). Further from CPU15 to L
An operation command is sent to the ED drive unit 21 to drive the LED 10 to emit light, and an incoming call notification is made by light (step A6).
). In this case, if dialing is in progress, the speaker 25 is not driven and only the LED 10 is driven to emit light to notify the incoming call. At this time, the timer T1 in the RAM 17 for controlling the notification time of the incoming call is set (step A).
7).

Then, it is judged whether the set mode at this time is the timepiece mode, that is, whether the count value of the mode counter M in the RAM 17 is "0" (step A8). Return to HALT state. When the clock mode is designated, the count value of the mode counter M is set to "+1" to set the message display mode (step A9), and the pointer P is set to "1" (step A10). In this state, the CPU 15 reads out the content of the address 1 of the message register section 31 indicated by the pointer P, outputs it to the display buffer 18, and displays it on the display section 2 (step A11).
In this case, the arrival time is displayed in the upper display area 2a of the display unit 2, and the call classification information and the message are displayed in the lower display area 2b. At this time, the timer T2 for controlling the message display time is set (step A12), and then the HALT state of step A1 is returned to.

When a clock interrupt occurs in this state, the process proceeds to step A13 to perform the clock processing. The above-mentioned clock interrupt is generated, for example, at an interval of 1 second, whereby the clock register 30
The timekeeping information therein is incremented by "+1". Then, it is judged whether or not the timer T1 is set (step A14), and if the timer T1 is set, the count value of the timer T1 is incremented by "+1" (step A15). Then, it is judged whether or not the measured value of the timer T1 has reached the set value, which is 8 seconds in this embodiment, and if it has not reached 8 seconds, it is judged whether or not the timer T2 is set (step A18).

If it is determined in step A14 that the timer T1 is not set, the process of measuring the timer T1 is not performed and the process immediately proceeds to step A18 to determine the set state of the timer T2. If the timer T2 is set, set the count value of the timer T2 to "+1".
After (step A19), it is judged whether or not the measured value reaches the set value, which is 30 seconds in this embodiment (step A2).
0), if it has not reached 30 seconds, HAL of step A1
Return to T state.

The above-mentioned time-interruption is carried out at regular time intervals, whereby the timer T1 is timed up, that is, 8 times.
When the elapsed time of seconds is measured, the CPU 15 sends a drive stop command to the LED drive unit 21 and the sound signal generation unit 22, and the incoming call notification operation by the LED 10 and the speaker 25 is stopped. Furthermore, after that, the timer T2 is up,
That is, if the elapsed time for 30 seconds is measured, the CPU 15
From this, the mode counter M is set to "0" to specify the clock mode, and the pointer P is set to "0". When "0" is set to this pointer P, the current time information is read from the clock register 30 at address 0
It is read out to the display buffer 18 via 5 and displayed in the upper display area 2a of the display unit 2 as shown in FIG. 1 (step A22). If the timer T2 is not set, the process proceeds from step A18 directly to step A22 to display the above-mentioned present time.

When a call from the caller is received as described above, the LED 10 and the speaker 25 notify the incoming call for 8 seconds, the received message is displayed on the display unit 2 for 30 seconds, and then the normal clock mode is resumed. To display the current time.

When a key operation signal is input to the CPU 15 from the key input unit 16, the HALT state at step A1 is advanced to step A23 to perform key processing. Details of this key processing will be described below with reference to the flowcharts of FIGS. The message information held in the message register unit 31 in the RAM 17 is displayed on the display unit 2
The message display mode is designated by the mode key 6 or the read key 7 is operated in the clock mode.

When the above key operation is performed, it is determined in step B1 whether or not the operation key is the mode key 6, and if it is the mode key 6, the count value of the mode counter M is "+1" (step B2). After that, it is judged whether or not the message display mode (mode counter M = 1) is set (step B3), and if the message display mode is set, "1" is set to the pointer P (step B4) and the timer T2 clocks. To start (step B5).
Then, the storage information of the address designated by the pointer P, that is, the address 1 in this case, that is, the call type information, the message, and the arrival time is read from the RAM 17 and displayed on the display unit 2 (step B6). That is, when the message display mode is designated by the mode key 6, the latest message information stored in the first address of the message register section 31 is first displayed on the display section 2.

When the read key 7 is operated in the clock mode, the process proceeds to step B7 through step B1 and it is determined whether the operation key is the read key 7. In this case, the read key 7 is used. Is being operated,
Further, in step B8, it is judged whether or not the time mode (M = 0). Since the clock mode is designated at this point, the contents of the mode counter M are incremented by "+1" to designate the message display mode (step B9), and the pointer P is set to "1" (step B10). Then, the above step B5 (start timer T2)
After that, the flow advances to step B6 to display the message information stored in the address 1 of the message register section 31 on the display section 2 as described above.

When the user wants to display the next message while the above message information is displayed, the read key 7
To operate. When the read key 7 is operated, the process proceeds to step B11 via steps B1, B7 and B8, and it is determined whether or not the message display mode is set. In this case, since the message display mode is set, the pointer P is moved to "+".
After 1 "(step B12), it is determined whether the value has reached" 31 "(step B13). If the value of the pointer P has not reached "31", the process proceeds to step B6 via step B5 and the above-mentioned message display processing is performed. That is, the storage information of the message register unit 31 designated by the value of the pointer P is read and displayed on the display unit 2.

In the same manner, every time the read key 7 is operated, the value of the pointer P is incremented by "+1", the designated address for the message register section 31 is updated, and the message information stored in the message register section 31 is updated. The data is sequentially read and displayed on the display unit 2. When the value of the pointer P exceeds the final address (address 30) of the message register section 31 by the operation of the read key 7 and becomes "31", this state is detected in step B13 and "1" is set to the pointer P. Is set. As a result, the designated address of the message register section 31 returns to the 1st address and the stored information is displayed on the display section 2. By operating the read key 7 as described above, the information stored in the message register section 31 is sequentially displayed on the display section 2. However, if no key operation is performed in this message display state, the timer T2 causes 30 It returns to the clock mode when the time is counted for a second.

When the telephone number stored in the telephone number storage memory section 32 of the RAM 17 is displayed on the display section 2, the telephone number display mode is designated by the mode key 6. When the mode key 6 is operated, steps B1 and B
After step 2, the process proceeds to step B3, where it is judged whether the message display mode is set or not. In this case, since the telephone number display mode is designated, the determination result in step B3 is NO, and the process proceeds to step B15 to determine whether the telephone number display mode or the telephone number storage mode is designated. When the telephone number display mode or the telephone number storage mode is designated, "31" is set to the pointer P, and then the process proceeds from step B5 to step B6 for display processing.

That is, the pointer P designates the address "31" of the memory unit 32 for storing the telephone number, and the address "3" is designated.
The name, telephone number and identification flag stored in the 1 "address are read out to the display buffer 18 via the CPU 15,
A name is displayed in the upper display area 2a of the display unit 2, and a telephone number is displayed in the lower display area 2b. At this time, the CPU 15
It is determined whether or not the identification flag is "1", and if it is "1", the display information is flushed to notify the user that the telephone number being displayed can use the credit call.

When another telephone number stored in the telephone number storage memory 32 is read and displayed, the read key 7 is operated in this state. When the read key 7 is operated, the process proceeds to step B11 via steps B1, B7 and B8, and it is determined whether or not the message display mode is set. In this case, since the message display mode is not set, the determination result is NO, and the process proceeds to step B17 to increment the pointer P by "+1". Next, it is judged whether or not the value of the pointer P has reached "51", that is, whether or not the last address of the telephone number storage memory unit 32 has been exceeded. Proceed to. In step B6, the stored information in the telephone number storage memory section 32 whose address is designated by the value of the pointer P is read out and displayed on the display section 2.

As described above, in the telephone number display mode, the value of the pointer P is "+" every time the read key 7 is operated.
1 ”, the name and the telephone number stored in the telephone number storage memory unit 32 are sequentially read and displayed on the display unit 2. Then, by operating the read key 7, the value of the pointer P is changed to the final address (5
When it reaches "51" beyond the address 0), the state is detected in step B19, and the value of "31" is set to the pointer P. As a result, the address designation of the memory unit 32 for storing the telephone number is returned to the first address, and the stored information is displayed on the display unit 2.

In the telephone number writing mode, the stored information in the telephone number storage memory section 32 is displayed on the display section 2 as in the telephone number display mode. It can be corrected or rewritten and written in the corresponding address of the telephone number storage memory unit 32.

When the mode key 6 is operated to switch to the timepiece mode from the message display mode or telephone number display mode, the steps B3 and B are performed.
All the determination results of 15 are NO, the process proceeds to step B20, and "0" is set to the pointer P. Then timer T
2 is turned off (step B21) and the process returns to the display process of step B6. As a result, the pointer P designates the clock register 30 at address 0, and the clock information is displayed in the display buffer 1.
8 and is displayed on the display unit 2.

When auto dialing,
The message display mode or the telephone number display mode is designated, and the transmission key 8 is operated with the desired telephone number displayed on the display unit 2. In particular, if you want to use a credit call, in the phone number display mode, select a desired phone number to display it on the display unit 2, and check the display state, that is, whether or not to make a credit call by the presence or absence of flushing, Then, the transmission key 8 is operated. When the transmission key 8 is operated, the determination results of steps B1 and B7 are both NO, and the process proceeds to step B22, and it is determined whether or not the operation key is the transmission key 8.

If the operation key is the send key 8, it is further determined in step B23 whether or not the message display mode is set. If the message display mode is specified,
At that time, the telephone number displayed on the display unit 2 is set in the buffer 24 (step B24), and the CPU 1
An operation command is sent from 5 to the DTMF signal sound generator 23. As a result, the DTMF signal tone generator 23 operates and the DTM signal tone generator 23 operates according to the telephone number set in the buffer 24.
The F signal is generated to drive the speaker 25 (step B
twenty five).

When the dial operation is completed, the DTMF signal sound generator 23 outputs an end signal to the CPU 15. When the send key 8 is operated in the message display mode as described above, the credit call is not used and the normal dial operation is performed.

When it is determined in step B23 that the message display mode is not set, step B is further executed.
At 26, it is determined whether the telephone number display mode is set. In the telephone number display mode, it is determined whether or not the identification flag for the telephone number read from the telephone number storage memory unit 32 and displayed on the display unit 2 at that time is "1". If the identification flag is not "1", that is, if the use of the credit call is not permitted, the process directly proceeds to step B24 and the normal dialing operation for the telephone number displayed on the display unit 2 is performed.

However, if it is determined in step B27 that the identification flag is "1", the credit call memory section 33 is transferred from the RAM 17 to the RAM 17 as shown in step B28.
The credit call telephone number stored in is CPU1
5, is set in the buffer 24 in combination with the telephone number displayed on the display unit 2, and C
An operation command is sent from the PU 15 to the DTMF signal sound generator 23. As a result, the DTMF signal sound generator 23 operates to generate a DTMF signal according to the credit call and contact telephone numbers set in the buffer 24 to drive the speaker 25 (step B25). As described above, the identification flag area 32a of the memory 32 for storing the telephone number
Only when the identification flag "1" is set in, the use of the credit call is permitted. If it is determined in step B26 that the telephone number display mode is not set, the dial operation is not performed and the process directly returns to step A1 in FIG.

In addition, for setting a telephone number, etc., the numeric keypad 4,
When the shift key 5 or the like is operated, steps B1 and B7
, B22 are both NO, step B29
Then, the process corresponding to the operation key is executed.

In the above embodiment, the case where the paging receiver with the auto dial function is used has been described, but it is also applicable to the auto dial device which automatically generates the dial tone based on the telephone number stored in the memory. The same effect can be obtained by carrying out the same operation as in the above embodiment.

[0057]

As described above in detail, according to the present invention,
In the auto dial device and the paging receiver with the auto dial function, an identification flag indicating whether or not the credit call can be used is added to the telephone number storage memory that stores the call number for the call when writing the contact telephone number. , When a telephone number in the telephone number storage memory is selected and specified at the time of transmission, whether or not the credit call can be used is judged by the identification code added to the telephone number, and normal dial operation or dial operation by credit call is performed. Since this is done, it is possible to dial by credit call only to the contact specified in advance, and the use of credit call to other telephone numbers is prohibited. Therefore, it is possible to reliably prevent the abuse of credit calls.

[Brief description of drawings]

FIG. 1 is a front view showing an external configuration of a paging receiver according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit configuration in the embodiment.

FIG. 3 is a diagram showing a data structure of a Pokusag method.

4 is a diagram showing an internal configuration of a RAM in FIG.

FIG. 5 is a flowchart for explaining the operation of the paging receiver.

FIG. 6 is a flowchart showing details of key processing in FIG.

FIG. 7 is a flowchart showing details of key processing in FIG.

[Explanation of symbols]

1 ... Case, 2 ... Display unit, 3 ... Keyboard,
4 ... Numeric keypad, 5 ... Shift key, 6 ... Mode key, 7 ... Read key, 8 ... Send key, 9 ...
Paging function on / off switch, 10 ... LE
D, 11 ... Antenna, 12 ... Receiver, 13
... Decoder section, 14 ... ID-ROM, 15 ... C
PU, 16 ... Key input section, 17 ... RAM,
18 ... Display buffer, 21 ... LED driver, 2
2 ... Sound signal generation unit, 23 ... DTMF signal sound generation unit, 24 ... Buffer, 25 ... Speaker, 3
0 ... Clock register, 31 ... Message register section,
32 ... Memory part for storing telephone number, 33 ... Memory part for credit call.

Claims (2)

[Claims] 1. A telephone number storage memory for storing a plurality of contact telephone numbers and credit call telephone numbers, and means for adding an identification flag indicating whether or not a credit call can be used to each of the contact telephone numbers stored in this memory. And a judgment means for judging whether or not the credit call can be used by the identification code added to the telephone number when the telephone number in the telephone number storage memory is selected and designated at the time of transmission, and the judgment result of this means. And an automatic dial means for performing a normal dial operation or a credit call dial operation. 2. A paging receiver with an auto dial function, comprising the auto dial device according to claim 1.