JPH08274860A - Telephone set - Google Patents

Abstract

PURPOSE: To provide a telephone set for facilitating re-calling even for a terminated telephone call. CONSTITUTION: After call termination is detected in a call termination detection part 9, a microcomputer 3 detects the telephone number data of a call origination side from the demodulation data of modem signals outputted from a modem circuit 12. The microcomputer 3 extracts the telephone number data from the output data of a DTMF demodulation part 14 when the telephone number data of an opposite side are sent by DTMF signals during automatic recording or during communication. In addition to the telephone number data of the opposite side relating to calling, the obtained telephone number data of the opposite side, that is the telephone number data of the opposite side relating to the call termination, are stored in the redial area of a nonvolatile memory 16 as redial data. Also, the overlapping storage of the same redial data is inhibited. The recalling can be performed even for the terminated telephone call by performing a calling operation using the redial data and the recalling for the terminated telephone call is facilitated.

Description

Detailed Description of the Invention

[0001]

This invention relates to telephones. More specifically, the present invention relates to a telephone in which telephone number data of not only a call origination but also a call reception side is stored as redial data so that it is easy to redial a received call.

[0002]

2. Description of the Related Art Conventionally, a telephone having a redial function has been known. The redial function is a function in which the telephone number data of the previous call is stored as redial data in the data storage means and the redial data can be read from the data storage means to make a call operation when a call is made. When a plurality of redial data can be stored in the data storage means, when making a call operation based on the redial data, the plural redial data are searched while referring to the display on the display unit to obtain the desired redial data. After that, the calling operation is started. Such a redial function is very convenient because the user can search the telephone directory or the like for the telephone number of the other party and save time and effort for key-in of the telephone number.

[0003]

As described above, the telephone number data stored as redial data in the data storage means is limited to the telephone number data of the other party involved in the call. Therefore, when making a call back to the incoming call, it is still necessary to check the telephone number of the other party in a telephone directory or the like and key-in, which is very troublesome.

Therefore, the present invention provides a telephone which makes it easy to redial the incoming call.

[0005]

A telephone according to the present invention sequentially stores data storage means for storing telephone number data as redial data and telephone number data of the other party for making and receiving calls in the data storage means. And a data write control means for storing the data.

[0006]

In the data storage means, the telephone number data of the other party involved in the call is stored as redial data. Further, the telephone number data of the other party regarding the incoming call is also stored in this data storage means as redial data. The telephone number data of the other party relating to the incoming call is detected from the line signal, for example, when the incoming call is detected, and is transmitted in the form of a DTMF signal from the other party in a call-enabled state, for example.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In this example, the calling party's telephone number data is detected from the modem signal indicating the calling party's telephone number data inserted in the ringing signal transmitted via the telephone line, and the other party involved in the incoming call receives this. It is used as the telephone number data of. In this case, the modem signal indicating the telephone number data is inserted during the period when there is no signal in the intermittent signal as the calling signal. Whether or not the modem signal indicating such telephone number data is transmitted to the receiving side can be set by the transmitting side. Further, for example, the telephone number data transmitted in the form of a DTMF signal from the other party in a call-enabled state is detected and used as the telephone number data of the other party concerning the incoming call.

FIG. 1 shows the configuration of the telephone of this example. The telephone of this example includes a line control unit 1 for controlling connection and non-connection of lines, a voice path control unit 2 for controlling a voice signal path, and a microcomputer as a system controller (hereinafter, referred to as "microcomputer"). ) 3. The voice signal transmitted through the telephone line is supplied to the voice path control unit 2 through the line control unit 1, and is supplied from the voice path control unit 2 to the receiver (speaker) or the speaker 5 of the handset (handset) 4. It The voice path in the voice path control unit 2 is set by the microcomputer 3. In this case, the voice path controller 2 supplies a signal indicating the state of the voice path to the microcomputer 3, and the microcomputer 3 manages the voice path of the voice path controller 2 based on this signal.

For example, when the handset 4 is in the off-hook state and is in the use mode of the handset 4, the voice path is set so that the voice signal is supplied from the voice path control unit 2 to the handset of the handset 4. Further, when the speaker key described later is pressed and the speaker 5 is in the use mode, the audio path is set so that the audio path control unit 2 supplies the audio signal to the speaker 5. Also,
When the received voice signal is recorded in the state where the answering machine mode is set, the voice signal is supplied from the voice path control unit 2 to the voice recording / reproducing unit described later and also to the speaker 5. The voice route is set as follows. By supplying the audio signal to the speaker 5, the received audio signal recorded can be monitored.

A voice signal output from the transmitter (microphone) of the handset 4 or the microphone 6 is supplied to the line controller 1 through the voice path controller 2.
It is sent to the telephone line via the line control unit 1. In this case, when the handset 4 is in the use mode described above, the voice path is set so that the voice signal output from the transmitter of the handset 4 is supplied from the voice path control unit 2 to the line control unit 1. . Further, when the speaker 5 is in the use mode described above, the audio path is set so that the audio signal output from the microphone 6 is supplied from the audio path control unit 2 to the line control unit 1.

In addition, the telephone of this example corresponds to the telephone number of the other party by controlling the microcomputer 3 when the incoming call is detected and outputting the ringing tone, and by controlling the microcomputer 3 when calling. DTMF (Dual Tone Multiple Frequ
The DTMF modulator 8 which outputs the ency) signal, the DTMF signal sent from the other side in the call-enabled state is "*",
It has a DTMF demodulation unit 14 for converting received data corresponding to the special input key of "#" and the ten keys of "0" to "9".

The ringing tone output section 7 is configured to have a speaker and a buzzer. Further, the DTMF signal output from the DTMF modulator 8 at the time of calling is supplied to the telephone line via the voice path controller 2 and the line controller 1. The received data output from the DTMF demodulation unit 14 is supplied to the microcomputer 3.

Further, the telephone of this example has an incoming call (ringer) detecting section 9 for detecting an incoming call, a hook state detecting section 10 for detecting whether the handset 4 is in an on-hook state or an off-hook state, and a calling side ( Line disconnection detector 11 for detecting whether or not the line is disconnected at the calling side), modem circuit 12 for demodulating the modem signal sent through the telephone line to obtain a digital signal, and receiving in the answering mode A voice recording / playback unit 13 for recording a voice signal and playing back a recorded received voice signal or a prerecorded response message (voice signal) by operating a key input unit described later or by controlling the microcomputer 3 is provided. Have

A line signal is supplied to the incoming call detection unit 9 from the telephone line via the line control unit 1. The incoming call detection unit 9 detects a 16 Hz ringing signal intermittently supplied from the exchange, and forms a high level "H" incoming call detection signal during the ringing signal supply period. The incoming call detection signal output from the incoming call detection unit 9 is supplied to the microcomputer 3.

The hook state detecting section 10 is a hook switch HS (not shown in FIG. 1) arranged in the line control section 1.
It is configured to have a switch that operates in conjunction with. As is well known, the hook switch HS is in the ON state when the handset 4 is in the off-hook state, and the line is in the DC closed (DC loop closed) state, and when the handset 4 is in the on-hook state. It is turned off and the line is in the DC open (DC loop open) state. The hook state detection signal output from the hook state detection unit 10 is supplied to the microcomputer 3.

A line signal is supplied from the telephone line to the line disconnection detecting unit 11 via the line control unit 1. When the line is disconnected by the calling side, a 400 Hz continuous signal (dial tone signal) or a 400 Hz intermittent signal (busy tone signal) is sent from the exchange, or a silent state occurs. The line disconnection detector 11 detects a line disconnection by detecting one of the above-mentioned states from the line signal. The line disconnection detection signal output from the line disconnection detector 11 is supplied to the microcomputer 3.

A line signal is supplied to the modem circuit 12 from the telephone line through the line control unit 1. The modem signal transmitted from the exchange through the telephone line is the modem circuit 12
Is demodulated by and becomes digital data. Digital data output from the modem circuit 12 is supplied to the microcomputer 3. As will be described later, the microcomputer 3 detects the telephone number data of the other party from the digital data output from the modem circuit 12 at the time of detecting an incoming call. here,
As shown in FIG. 3, the telephone number data is sent in a format in which a start bit and a stop bit are added before and after the telephone number data, and a header indicating that the telephone number data is added before the start bit. come. The microcomputer 3 detects the telephone number data based on the information such as the header.

The voice recording / reproducing unit 13 is configured to have, for example, a semiconductor memory as a voice signal storage means. The operation of the voice recording / playback unit 13 is controlled by the microcomputer 3, and the voice recording / playback unit 13 supplies a signal indicating the operating state to the microcomputer 3. The voice recording / reproducing unit 13 records a received voice signal when the voice recording / reproducing unit 13 is set to the voice recording mode by the operation of the key input unit described later. The audio signal reproduced by the audio recording / reproducing unit 13 is supplied to the speaker 5 via the audio path control unit 2, and the reproduced sound is output from the speaker 5.

Further, at a predetermined address of the semiconductor memory of the voice recording / reproducing unit 13, a response message to be transmitted to the calling side (calling side) in the recorded message mode is recorded in advance. The response message reproduced by the voice recording / playback unit 13 under the control of the microcomputer 3 is sent to the telephone line via the voice route control unit 2 and the line control unit 1. This response message is
For example, it is a message telling that the message is set to be recorded in the answering machine mode.

Further, the microcomputer 3 includes a ten-key pad for inputting a telephone number and the like, cursor movement keys for left, right, up and down, a speaker key for setting a speaker 5 usage mode, an operation key for registering telephone directory data, A mode setting key for setting the answering machine mode, an operation key for operating the reproduction operation of the voice recording / reproducing unit 13, a stop key for forcibly returning from each operation mode to the standby mode, redial data and a telephone directory. A key that has a call key for switching to calling operation after searching data, and a character sending key for reading character message data written in a nonvolatile memory described later and displaying the character message on the display unit. The input unit 15 is connected.

Further, the microcomputer 3 has a nonvolatile memory 16 for storing setting information of an answering machine mode, redial data, telephone directory data, character message data and the like, a display section 17 including a liquid crystal display element, a counter. A timer 18 composed of, etc. is connected. The display unit 17 displays a telephone number input by operating the key input unit 15 at the time of making a call, data contents when retrieving redial data or telephone directory data, a system state, and the like. The phonebook data of each case stored in the nonvolatile memory 16 includes name data,
It includes telephone number data and registration number data.

Although not shown in FIG. 1, the line control unit 1
The connection switch is arranged in parallel with the hook switch HS. The on / off of the connection switch is controlled by the microcomputer 3. For example, when the speaker key of the key input unit 15 is pressed to enter the use mode of the speaker 5, the connection switch is turned on, and the line is in the DC closed state even when the handset 4 is in the on-hook state. It is said that Further, for example, after a lapse of a predetermined time after detecting an incoming call in the answering machine mode, the above-mentioned connection switch is automatically turned on and the line is put into a DC closed state. The speaker 5
When the speaker switch of the key input unit 15 is pressed while the connection switch is turned on and the line is in the DC closed state in the use mode of 1, the connection switch is turned off and the line is opened to DC. It becomes a state.

FIG. 2 shows a configuration example of the line control unit 1 and the like. As shown, the telephone line is a 2-wire / 4-wire conversion circuit 1
It is connected to the voice path control unit 2 via a. Further, the hook switch HS described above is inserted and connected to the telephone line, and the connection switch 1b whose on / off is controlled by the microcomputer 3 is connected in parallel with the hook switch HS. Further, a telephone line is connected to each of the incoming call detecting unit 9, the line disconnection detecting unit 11 and the modem circuit 12 via a DC cut capacitor 1c, whereby the incoming call detecting unit 9,
A line signal is supplied to the line disconnection detector 11 and the modem circuit 12.

Further, the hook state detecting section 10 is a connection switch 10 which is turned on / off in conjunction with the hook switch HS.
a. One end of the connection switch 10a is connected to the power supply terminal, and the other end is grounded via the resistor 10b. Then, the connection switch 10a and the resistor 1
The signal obtained at the connection point of 0b is supplied to the microcomputer 3 as a hook state detection signal.

In the above structure, the handset 4 is put into the off-hook state, or the speaker key of the key input unit 15 is pressed to bring the line into the DC closed state,
When the telephone number of the other party is input by the key operation of the key input unit 15, the calling operation is performed. In addition, by pressing the call key of the key input unit 15 after searching the redial data or the telephone book data, the calling operation using the redial data or the telephone book data is performed. That is, a DTMF signal corresponding to the telephone number of the other party is output from the DTMF modulating section 8 under the control of the microcomputer 3, and the DTMF signal is transmitted through the voice path control section 2 and the line control section 1 and further through the telephone line ( (Not shown). As a result, the line with the other party is connected and a call is possible. The telephone number data of the other party involved in the call is stored as redial data in the redial area of the non-volatile memory 16.

When a ringing signal is transmitted through the telephone line in the standby state, an incoming call is detected by the incoming call detecting section 9 and the ringing tone output section 7 outputs a ringing tone under the control of the microcomputer 3. When this incoming call is detected, the telephone number data of the calling side is detected by the microcomputer 3 from the output data of the modem circuit 12. When the telephone number data of the calling side is detected by the microcomputer 3, the telephone number based on the telephone number data is displayed on the display unit 17 under the control of the microcomputer 3. When the phonebook data stored in the phonebook area of the non-volatile memory 16 has the same phone number data as the detected phone number data, the name data included in the phonebook data is displayed on the display unit 17. Based on the caller's name is also displayed at the same time. In this way, the telephone number data of the calling side detected by the microcomputer 3 is the telephone number data of the other party regarding the incoming call, and is stored in the redial area of the non-volatile memory 16 as redial data.

In addition, while the ringing tone is being output from the ringing tone output section 7, the handset 4 can be turned off hook or the speaker key of the key input section 15 can be pressed to respond. By this response operation, the hook switch HS or the connection switch 1b is turned on, and the line is closed by direct current. As a result, the line with the other party is connected and a call is possible.
When the line is connected and in a callable state, the line is disconnected by putting the handset 4 in the on-hook state or pressing the speaker key of the key input unit 15.

When the answering machine mode is set, the connection switch 1b is automatically turned on after the ringing tone output operation described above has been performed for a predetermined time, and the line is in a DC closed state. , The line with the other party is connected and the call is ready. Then, after the response message indicating that the received voice signal is recorded is transmitted to the calling side, the voice recording / reproducing unit 13 starts recording. In this case, since the received voice signal is supplied from the voice path control unit 2 to the speaker 5 as described above, the received voice signal recorded by the speaker 5 can be monitored.

Even when the voice recording / reproducing unit 13 is recording the received voice signal in this manner, the handset 4 is put in the off-hook state or the speaker key of the key input unit 15 is pressed. Then, a call can be made using the handset 4, or the speaker 5 and the microphone 6. In this case, the recording by the voice recording / reproducing unit 13 is ended under the control of the microcomputer 3.

Further, when character message data by a DTMF signal is sent from the other party during an answering machine or during a call, the received data output from the DTMF demodulation unit 14 is converted into a conversion format (under the control of the microcomputer 3). (Not shown) is converted into character data, the character data is written in the character message area of the non-volatile memory 16, and a character message based on the character data is displayed on the display unit 17.

Similarly, when telephone number data is sent by a DTMF signal from the other party during voice recording or during a telephone call, the telephone number data is extracted by the microcomputer 3 from the received data output from the DTMF demodulation section 14. It This telephone number data is written in the redial area of the non-volatile memory 16 as the telephone number data of the other party regarding the incoming call, and the telephone number based on the telephone number data is displayed on the display unit 17. Although not mentioned above, a telephone number data transmission command (eg * 5 * 5) is placed before the telephone number data.
And the telephone number data transmission end command (for example, * 8 * 8) is placed after the telephone number data, the microcomputer 3 can extract only the telephone number data well.

In the case where the telephone number data of the calling party and the telephone number data of the calling party are stored as redial data in the redial area of the non-volatile memory 16 as described above, the non-volatile memory 16 When the redial data already stored in the redial area has the same telephone number data as the telephone number data to be stored, duplicated storage is prohibited.
When the phonebook data stored in the phonebook area of the non-volatile memory 16 has the same phone number data as the phone number data to be stored, the corresponding name data is read from the phonebook area. Stored in the redial area together with the telephone number data.

In this example, the microcomputer 3 controls the operation of storing redial data (telephone number data) at the time of making a call or detecting an incoming call in accordance with the flowchart of FIG.

First, during standby, step ST101
In step ST10, it is determined whether or not there is a calling operation.
In step 2, it is determined whether an incoming call has been detected. Step ST1
When a calling operation is made in step 01, the redial data storage mode is set in step ST103, and step ST10
In step 4, it is determined whether the redial data stored in the redial area of the non-volatile memory 16 has the same data as the telephone number data relating to the call.

When it is determined in step ST104 that the same data does not exist, it is determined in step ST105 whether or not the maximum number has been stored. After erasing old redial data, step ST10
Proceed to 7. When it is determined in step ST104 that the maximum number has not been stored, the process directly proceeds to step ST107.
If it is determined in step ST104 that the same data exists, the redial data, which is the same data as the telephone number data related to the call, is deleted from the redial area in step ST108, and then the process proceeds to step ST107.

In step ST107, it is determined whether or not the telephone book data stored in the telephone book area of the non-volatile memory 16 has the same data as the telephone number data relating to the call. If it is determined that the same data is present, the telephone number data relating to the call is stored in the redial area as the newest redial data in step ST109, and the corresponding name data is read from the telephone directory area and stored with the telephone number data. Then, the storing operation is finished.
On the other hand, when it is determined that the same data does not exist, the telephone number data relating to the call is stored in the redial area as the newest redial data in step ST110, and the storage operation ends.

When an incoming call is detected in step ST102, it is determined in step ST111 whether the telephone number data of the calling side is detected from the output data of the modem circuit 12. If it is determined that the telephone number data is not detected, the operation is terminated without setting the redial data storage mode. On the other hand, when it is determined that the telephone number data is detected, the redial data storage mode is set in step ST103, and thereafter, the telephone number data is detected from the output data of the modem circuit 12 in the same manner as the storage operation of the telephone number data relating to the calling. The storage operation of the telephone number data of the calling side is performed.

It should be noted that the flow chart of FIG.
This shows the operation of storing redial data when an incoming call is detected. As described above, the telephone number data of the other party sent by the DTMF signal from the other party during the absence recording or during the call is stored in the nonvolatile memory 16. In the case of storing in the redial area, the microcomputer 3 similarly executes the operation after step ST103 in the flowchart of FIG.

As described above, in this example, all the telephone number data of the other party relating to the call or the call is stored in the redial area of the non-volatile memory 16 as redial data. In this case, when the redial data already stored in the redial area of the non-volatile memory 16 has the same data as the telephone number data to be stored, the telephone number data to be stored in the redial area is stored. After the redial data which is the same data as is deleted, the telephone number data is stored in the redial area as the newest redial data. Also,
When the phonebook data stored in the phonebook area of the non-volatile memory 16 has the same data as the phone number data to be stored, the corresponding name data is read out from the phonebook area and stored as the phone number data. It is stored together in the redial area.

Further, in this example, the microcomputer 8 operates as shown in FIG.
According to the flowchart of FIG. 6, the search operation of the redial data stored in the redial area of the non-volatile memory 16 and the phonebook data stored in the phonebook area is controlled.

First, when the upward cursor movement key ("↑" key) or the downward cursor movement key ("↓" key) is pressed during standby in step ST11, redialing from standby mode is performed in step ST12. Switch to data search mode. Then, in step ST13, it is determined whether or not there is redial data (telephone number data) in the redial area of the nonvolatile memory 16.

In step ST13, if one or more redial data items are stored in the redial area, X is set to 1 in step ST14, and then step ST1 is set.
The display unit 17 is controlled by 5 to control the Xth redial data,
Therefore, the telephone number based on the first redial data (newest redial data) is displayed. When displaying the telephone number of the other party by the redial data on the display unit 17, if the name data is stored together with the redial data in the redial area, the display unit 17 displays the other party's telephone number based on the name data. Display the name as well. Although not described, the same applies to the following.

After resetting the timer 18 in step ST16 to start the counting operation, it is determined in step ST17 whether or not the "↑" key is pressed.
If it is determined that the "↑" key has been pressed, step S
At T18, it is determined whether X matches the number Xmax of redial data stored in the redial area,
If they do not match, X is incremented in step ST19, and then the process returns to step ST15 and the display unit 17
The X-th redial data, that is, the telephone number based on the immediately preceding redial data is displayed.

When it is determined in step ST17 that the "↑" key is not pressed, it is determined in step ST20 whether the "↓" key is pressed. When it is determined that the "↓" key has been pressed, X is selected in step ST21.
Is determined to be 1. When it is determined that X is not 1, after decrementing X in step ST22, the process returns to step ST15 and the display unit 17 displays the X-th redial data, that is, the telephone number by the redial data immediately after one in time. .

When it is determined in step ST20 that the "↓" key is not pressed, it is determined in step ST23 whether the stop key is pressed, and when it is determined that the stop key is pressed. Switches to the standby mode from the redial data search mode in step ST24.
When it is determined in step ST23 that the stop key is not pressed, in step ST25 a predetermined time (for example, 30
Second) has elapsed, and if a predetermined time has elapsed, the redial data search mode is set to the standby mode in step ST24.

When it is determined in step ST25 that the predetermined time has not elapsed, it is determined in step ST26 whether or not an incoming call is detected, and when it is determined that an incoming call is detected, the redial data search mode is selected in step ST27. Then, the ringing tone is output by controlling the ringing tone output section 7 by setting the ringing tone. When it is determined in step ST26 that the incoming call is not detected, it is determined in step ST28 whether or not the call key is pressed, and when it is determined that the call key is not pressed, the process returns to step ST17. Step ST28
If it is determined in step ST29 that the call key has been pressed, the redial data search mode is set in the calling mode in step ST29, and the selected redial data (display unit 17
(Displayed in) is executed.

When it is determined in step ST13 that there is no redial data, or when it is determined in step ST18 that X matches the number of redial data items Xmax, the telephone directory data is retrieved from the redial data search mode in step ST31. Switch to search mode. Then, in step ST32, it is determined whether or not there is phonebook data in the phonebook area of the non-volatile memory 16.

When it is determined in step ST32 that there is phonebook data in the phonebook area, N is set to 1 in step ST33, and the display unit 17 is controlled in step ST34 to control the Nth phonebook data, The registration number, name, telephone number, etc. based on the first telephone directory data (first telephone directory data) are displayed. Then, after the timer 18 is reset to start the counting operation in step ST35, it is determined in step ST36 whether or not the "↑" key is pressed. When it is determined that the "↑" key has been pressed, it is determined in step ST37 whether N matches the number Nmax of telephone directory data stored in the telephone directory area, and it is determined that they do not match. Step ST3
After incrementing N by 8, the process returns to step ST34 and the display unit 17 is caused to display the Nth telephone directory data, that is, the next telephone directory data.

When it is determined in step ST36 that the "↑" key has not been pressed, it is determined in step ST39 whether the "↓" key has been pressed. If it is determined that the "↓" key has been pressed, in step ST40 N
Is determined to be 1. When it is determined that N is not 1, after decrementing N in step ST41, the process returns to step ST34 and the display unit 17 is caused to display the Nth phonebook data, that is, the previous phonebook data.

When it is determined in step ST39 that the "↓" key is not pressed, it is determined in step ST42 whether the stop key is pressed, and when it is determined that the stop key is pressed. Switches to the standby mode from the telephone directory data search mode in step ST43. When it is determined in step ST42 that the stop key has not been pressed, in step ST44 a predetermined time (for example, 30
Second) has elapsed, and when a predetermined time has elapsed, a standby mode is set from the telephone directory data search mode in step ST43.

When it is determined in step ST44 that the predetermined time has not elapsed, it is determined in step ST45 whether an incoming call has been detected. If it is determined that an incoming call has been detected, a telephone directory data search is performed in step ST46. The ringing mode is set from the mode, and the ringing tone output unit 7 is controlled to output the ringing tone. When it is determined that the incoming call is not detected in step ST45, it is determined in step ST47 whether or not the call key is pressed. When it is determined that the call key is not pressed, the process returns to step ST36. When it is determined in step ST47 that the call key is pressed, step S47
At T48, switch from phonebook data search mode to calling mode,
The calling operation based on the selected telephone directory data (displayed on the display unit 17) is executed.

If it is determined in step ST32 that there is no telephone directory data in the telephone directory area, step ST49.
It is determined whether or not there is redial data in the redial area. If it is determined that there is no redial data, the telephone directory data search mode is changed to the standby mode in step ST50.

If it is determined in step ST37 that N matches the number Nmax of telephone directory data stored in the telephone directory area, or if it is determined in step ST49 that there is redial data, step ST5.
After switching from the phonebook data search mode to the redial data search mode in step 1, the process returns to step ST14 to set X to 1, and in step ST15, the display unit 17 is controlled to control the Xth redial data, and thus the first redial data. Display the phone number based on the data (latest redial data). Then, the process proceeds to step ST16.

When it is determined in step ST21 that X = 1, the redial data search mode is switched to the telephone directory data search mode in step ST52.
Then, in step ST53, it is determined whether or not there is phonebook data in the phonebook area of the non-volatile memory 16. When it is determined in step ST53 that there is phonebook data in the phonebook area, N is set to Nmax in step ST54, and then the display unit 17 is controlled in step ST34 to control the Nth phonebook data, that is, Nmaxth data. Display the registration number, name, and phone number based on the phonebook data (last phonebook data). Then, the process proceeds to step ST35.

When it is determined in step ST53 that there is no telephone book data in the telephone directory area, it is determined in step ST55 whether or not there is redial data in the redial area.
If it is determined that there is no redial data, step S
At T56, the phonebook data search mode is changed to the standby mode.

If it is determined in step ST40 that N is 1, or if there is redial data in step ST55, the telephone directory data search mode is switched to the redial data search mode in step ST57. In step ST58, X is set to Xmax, and in step ST15, the display unit 17 is controlled to display the X-th redial data, that is, the telephone number based on the Xmax-th redial data (oldest redial data). Then, the process proceeds to step ST16.

As described above, in this example, when the "↑" key or the "↓" key is pressed during standby, the redial data search mode is entered and the redial data search is started, and the redial of the nonvolatile memory 16 is started. When there is redial data in the area, the telephone number of the first redial data (newest redial data) is displayed on the display unit 17.

When the "↓" key is pressed while the first redial data (the newest redial data) is searched and the telephone number is displayed on the display unit 17, the redial data search is completed. Then, the mode automatically shifts to the phonebook data search mode and the search of the phonebook data is started. If there is phonebook data in the phonebook area of the non-volatile memory 16, the Nmax-th phonebook data (last phonebook data) The name, telephone number, and registration number according to (data) are displayed on the display unit 17.

When the Xmax-th redial data (oldest redial data) is searched and the telephone number is displayed on the display unit 17 and the "↑" key is pressed, the search for redial data is completed. Then, the mode automatically shifts to the phonebook data search mode and the search for the phonebook data is started. If there is phonebook data in the phonebook area of the non-volatile memory 16, the first phonebook data (first phonebook data The name, telephone number, and registration number according to (data) are displayed on the display unit 17.

Further, when the “↑” key is pressed while the Nmax-th telephone directory data is searched and the name, telephone number, and registration number are displayed on the display unit 17, the telephone directory data is searched. When the redial data search mode is completed and the redial data search is started, and there is redial data in the redial area of the non-volatile memory 16, the telephone number of the first redial data is displayed on the display unit 17. To be done.

When the "↓" key is pressed while the first phonebook data is searched and the name, phone number, and registration number are displayed on the display unit 17, the phonebook data is searched. When it finishes, it automatically shifts to the redial data search mode and starts searching for redial data.
When there is redial data in the redial area of the non-volatile memory 16, the telephone number based on the Xmax-th redial data is displayed on the display unit 17.

FIG. 7 shows the "↑" key as described above,
The transition state between the redial data search mode and the telephone directory data search mode by pressing the "↓" key is shown.

According to this example, all the telephone number data of the other party relating to the call or the call reception is stored as redial data in the redial area of the non-volatile memory 16. Therefore, it is possible to make a call operation using the redial data for the incoming call and redial it.
There is an advantage that it is easy to redial.

When the redial data already stored in the redial area of the non-volatile memory 16 has the same data as the telephone number data to be stored,
After the redial data which is the same as the telephone number data to be stored in the redial area is deleted, the telephone number data is stored in the redial area as the newest redial data. for that reason,
The same redial data is not redundantly stored in the redial area of the nonvolatile memory 16, and the storage capacity of the redial area can be effectively utilized.

If the phonebook data stored in the phonebook area of the non-volatile memory 16 has the same phone number data as the phone number data to be stored in the redial area, the corresponding name data is called. It is read from the book area and stored in the redial area together with the telephone number data. Therefore, in the redial data search operation, when the telephone number of the other party is displayed on the display unit 17 based on the redial data, the name of the other party can be displayed at the same time based on the name data. Can be specified accurately and easily.

In the above embodiment, the telephone number data is transmitted by the modem signal, but the present invention is an ISDN (Integrated Services Digital Network) to which the telephone number data of the calling side is transmitted. Needless to say, the same can be applied to telephones, mobile phones, and the like.

[0067]

As described above, according to the present invention, not only the call origination but also the telephone number data of the other party relating to the incoming call is stored as the redial data, so that the calling operation using the redial data is performed for the incoming call. It can be redone.
Therefore, there is no need to perform an operation such as checking the telephone number of the other party in a telephone directory or the like and inputting a key, and it is possible to easily redial the incoming call. Further, when the redial data stored in the data storage means has the same data as the telephone number data to be stored, it is possible to prohibit the same redial data from being recorded in duplicate in this data storage means. The storage capacity of the data storage means can be effectively utilized.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of a telephone according to the present invention.

FIG. 2 is a system diagram showing a configuration example of a line control unit and the like.

FIG. 3 is a diagram for explaining a configuration of telephone number data.

FIG. 4 is a flowchart for explaining a redial data storage operation when a call is made and when an incoming call is detected.

FIG. 5 is a flowchart (1/2) for explaining a search operation of redial data and telephone directory data.

FIG. 6 is a flowchart (2/2) for explaining a redial data and telephone directory data search operation.

FIG. 7 is a diagram showing a transition state between a redial data search mode and a telephone directory data search mode.

[Explanation of symbols]

 1 line control unit 2 voice path control unit 3 microcomputer 4 handset 5 speaker 6 microphone 7 ringing tone output unit 8 DTMF modulation unit 9 incoming call detection unit 10 hook state detection unit 11 line disconnection detection unit 12 modem circuit 13 voice recording and reproduction unit 14 DTMF demodulation unit 15 key input unit 16 non-volatile memory 17 display unit 18 timer

Claims (4)

[Claims] 1. A data storage means for storing telephone number data as redial data, and a data writing control means for sequentially storing telephone number data of the other party for making and receiving a call in the data storage means. A telephone characterized by. 2. The telephone according to claim 1, wherein the telephone number data of the other party relating to the incoming call is detected from the line signal when the incoming call is detected. 3. The telephone according to claim 1, wherein the telephone number data of the other party concerning the incoming call is transmitted from the other party in a DTMF signal format in a callable state. 4. When the telephone number data stored as redial data in the data storage means has the same data as the telephone number data of the other party involved in the calling and receiving, the same telephone number in the data storage means 2. The telephone according to claim 1, further comprising a data write prohibition unit that prohibits the duplicate storage of the number data.