JPH09149116A - Telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the telephone set of improved operability without errors by automatically originating a dial number to the opposite party no matter which of call origination and call termination the communication of a previous time is. SOLUTION: In the case that the call termination is present, when a user picks up a handset 6, a call-back flag(CBF) is set to a flag holding part 11. Simultaneously with it, a telephone number demodulated by a data demodulation part 3 is written in a buffer (DSB) 7 for dial sending out. On the other hand, when the user makes a telephone call by using ten keys 9, the CBF is reset. Simultaneously with it, the originated telephone number is written in the DSB 7. Also, when the user desires to call a person with whom communication is performed in the previous time, when a redialing and call-back key 10 is pressed, call-back is displayed when the CBF is set, redialing is displayed when it is reset at a display part 8 and the telephone number of the DSB 7 is automatically originated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telephone having a call back function for dialing the other party when an incoming call is received and a redial function for redialing the other party later when an outgoing call is made.

[0002]

2. Description of the Related Art In recent years, various functions have been added to telephones to make them highly functional, and telephone companies are providing new types of services. One of the services provided by telephone companies is the "caller telephone number sending service". This service is a service in which the exchange of the central office transmits the caller's telephone number to the receiving side telephone.

In Japan, Nippon Telegraph and Telephone Corporation is preparing for implementation of this service in a few years. In addition, the Ministry of Posts and Telecommunications is taking the lead in examining legislation. In addition, some American telephone companies in the United States and Canada have already implemented it. According to this service, the caller's telephone number as well as the time and the caller's name etc. are used as data at the communication speed of l200 bits per second during the first and second ringing pauses of the ringing tone (ringing signal). Will be sent.

Based on this data, the receiving telephone set
By displaying the telephone number, time, name, etc. on the display unit, the caller can be known before the operator responds. In addition, a telephone that has received this service can use the telephone number sent to make a return call (hereinafter referred to as a callback). A telephone having a callback function is provided with a memory for holding the transmitted telephone number and a dedicated callback button, and automatically transmits the held telephone number when the operator presses this button. It was

Further, as a similar function, there is a redial function that can automatically redial a telephone number that was called in a previous call. A telephone having a redial function is provided with a memory for holding a telephone number transmitted in a previous call and a dedicated redial button, and automatically transmits the telephone number held when the operator presses this button. Was.

[0006]

However, according to the telephone having both the call back function and the redial function, the telephone has the dedicated redial button and the call back button and functions independently of each other. Since it is necessary to properly determine whether to select, there is a problem that operability is poor. For example, when the user wants to dial the last call partner, if the last call came from the other party, the call back must be selected, and if the user made a call, redial must be selected. If the interval from a call is long or you are frequently exchanging calls with a large number of parties, you may be confused as to whether the last call was a call or a call, and you may be wrong. It may happen.

In particular, telephones in recent years tend to be equipped with many function buttons in accordance with the sophistication of functions, and it is difficult for the user to know what function is realized by which button, and there are many functions that are not used at all. However, operability tended to deteriorate as the functionality became higher. In view of the above problems, an object of the present invention is to provide a telephone having good operability that automatically dials a call partner of the previous time without the user being aware of whether the previous call was an outgoing call or an incoming call.

[0008]

In order to solve the above problems, the invention of claim 1 is a telephone having a call back function and a redial function, wherein a dial memory for storing dial numbers, a redial and a call back are provided. An operation unit having a dual-purpose key for receiving an instruction and a numeric key including a number from 0 to 9, a dial number of the dial memory is transmitted when the dual-purpose key is pressed, and when the numeric key is pressed, Dial transmission means for transmitting the specified dial number, demodulation means for demodulating the dial number of the other party based on the data transmitted from the exchange when receiving a call, and for each transmission, the dial number transmitted is overwritten in the dial memory. , Writing means for overwriting the demodulated dial number in the dial memory for each incoming call To.

The invention according to claim 2 is the telephone set according to claim 1, further comprising flag holding means for holding a flag indicating whether the content of the dial memory is a demodulated dial number or a transmitted dial number. And a flag setting means for setting a flag when the demodulated dial number is overwritten in the dial memory and resetting the flag when the dial number in the dial memory is transmitted, and a flag Display means for displaying that the call back is possible when set and displaying that the redial is possible when reset.

[0010]

1 is a block diagram showing the configuration of a telephone according to an embodiment of the present invention. The present telephone set includes an incoming call detection unit 2 that detects a ringing signal transmitted from a switch outside the drawing through a telephone line, and demodulates the telephone number of the caller from the data transmitted during the idle period of the detected ringing signal. A data demodulation unit 3, a hook control unit 4 for controlling a telephone line capturing / disconnecting operation depending on whether the handset 6 is on-hook or off-hook, a low-frequency amplifier unit 5 for amplifying a voice signal during a call after the off-hook, A handset 6 including a microphone for converting a user's voice into a voice signal and a speaker for converting a voice signal into a voice, a dial sending buffer 7 for storing one telephone number (dial number), and L
The control unit 1 includes a CD (liquid crystal display) panel and the like.
In accordance with the control of 1., when receiving a call, the telephone number of the other party demodulated by the data demodulating unit 3 and when displaying a call back or redial, the display unit 8 for displaying the call back or redial, and the user's An operation unit 12 that receives an operation instruction and a control unit 1 are provided.

This telephone is connected to a telephone exchange (not shown) or a telephone exchange (PBX: Private Branch Exchange) via a telephone line. Further, the exchange supports the "caller telephone number sending service", and transmits data including the caller telephone number during the idle period of the calling signal. The operation unit 12 includes numeric keys from 0 to 9 and other keys, and a ten-key (numerical key) 9 for receiving a dial number instruction from the user, and a redial and callback instruction by the user at the time of making a call. It has a redial / callback key (hereinafter abbreviated as a combined key) 10.

The control unit 1 has a flag holding unit 11 inside.
And controls the whole of the telephone as well as the redial function and the callback function. Specifically, when making a call, the control unit 1 sends the dial number in the dial sending buffer 7 when the dual-purpose key 10 is pressed,
When the ten key 9 is pressed, the dial number designated by the key is written in the dial sending buffer 7 and the dial number is transmitted. Further, when an incoming call is detected by the incoming call detection unit 2, the dial number demodulated by the data demodulation unit 3 is written in the dial sending buffer 7.

The flag holding unit 11 holds a callback flag indicating that the dial number in the dial sending buffer 7 is the dial number demodulated by the data demodulating unit 3. The callback flag is set when the demodulated dial number is written in the dial sending buffer 7 by the control unit 1, and is set when the dial number in the dial sending buffer 7 is transmitted. If it is reset.

FIG. 2 is a flowchart showing the operation contents of the telephone under the control of the control unit 1. When the incoming call detection unit 2 detects an incoming call (step 1), the data demodulation unit 3 receives the data transmitted from the exchange and demodulates the caller's telephone number (steps 2 and 3). The telephone number after demodulation is
It is displayed on the display unit 8 via the control unit 1. After that, when the hook control unit 4 detects an off-hook by the user (step 4), the control unit 1 sets a flag in the flag holding unit 11 (step 5) and writes the demodulated telephone number in the dial sending buffer 7. (Step 6). The call is started by the off-hook, and when the on-hook is detected thereafter, the call is ended (step 7).

When the hook control unit 4 detects off-hook (steps 1, 8) and the user specifies the dial number with the ten-key pad 9 (steps 9, 10), the control unit 1 The callback flag of the flag holding unit 11 is reset (step 11), the dial number is written in the dial sending buffer 7 (step 12), and the dial number in the dial sending buffer 7 is transmitted from the telephone line (step 13). . The call started after the transmission of this dial number ends when an on-hook is detected thereafter (step 14).

When the off hook is detected by the hook control unit 4 (steps 1 and 8), the user operates the dual-purpose key 10.
When is pressed (steps 9 and 15: yes), the control unit 1 causes the display unit 8 to display “Callback” if the callback flag of the flag holding unit 11 is set (step 16: yes). (Step 17) If it has been reset (Step 16: no), "Redial" is displayed on the display unit 8 (Step 18), and the callback flag is reset (Step 19). Then, as in steps 13 and 14, the call is terminated by on-hook.

In the above step 12, the dial number designated by the ten key 9 is written in the sending buffer 7. On the other hand, when the dual-use key 10 is pressed and the dial number is transmitted, the control unit 1 directly transmits the dial number held in the dial-out buffer 7, so that the writing in step 12 is not necessary. . Therefore, in the above-mentioned flow, the writing as in step 12 by the control unit 1 is prohibited in the dial transmission using the dual-purpose key 10.

The operation of the telephone of the present embodiment configured as described above will be described. When there is an incoming call, when the user picks up the handset 6 (off-hook), the callback flag is set (step 1).
~ 5). This serves as a reminder that this call came in from outside and called a person having a phone number. At the same time, the telephone number demodulated by the data demodulation unit 3 is written in the dial transmission buffer 7 (step 6).

On the other hand, when the user makes a call from the telephone using the ten-key pad 9, the call back flag is reset (steps 8 to 11). At the same time, the telephone number sent is written in the dial transmission buffer 7 (step 12). When the user wants to make a call to the person who has called the previous call, he / she goes off-hook and presses the redial / callback key 10 (steps 8, 10-1).
5) If the callback flag is set, "Callback" is displayed on the display unit 8 (step 1
7) If it has been reset, "Redial" is displayed (step 18), and the telephone number in the dial buffer is automatically transmitted (step 13). The call back flag is also reset when making a call by "call back" (step 19), so if this key is pressed next time, "Redial" is displayed, and whether the call was made from this phone last time. You will understand.

In the above embodiment, the combined key 1 is used.
After pressing 0, "callback" or "redial" is displayed on the display unit 8.
The display timing may be before pressing the dual-purpose key 10 (step 15) or before off-hook (step 8).
For example, in the flowchart of FIG. 2, steps 16 to 18 can be realized by inserting each step between steps 8 and 9. This allows the user to know in advance whether it is a callback or redial.

Further, although the telephone set connected to the telephone line is shown in the above-mentioned embodiment, it can be easily applied to a cordless telephone of a parent-child type as long as it is a child unit having a display section. As described above, according to the present telephone, the user can dial the same party as the previous call with the one-use button, regardless of whether the last call was an outgoing call or an incoming call. And the operability is improved.

Also, there is a mark called "callback flag" for remembering that this time the call came from outside and had a telephone number, and "callback flag" depending on the state of the flag. By displaying the "redial", the user can know which is which. In addition, since the main purpose of both the call back function and the redial function is to make a call again to the other party, it is considered that there is not much need to separate the dedicated buttons.

In particular, "caller telephone number sending service"
Since the telephones that can be used with are equipped with a display to know who is calling, when dialing to the other party who made the previous call, whether it is a callback or redial is displayed. By providing the distinguishable display, the buttons can be used in common and the operability is improved.

[0024]

As described above, according to the first aspect of the present invention, by pressing one dual-purpose key, whether the previous communication is an outgoing call or an incoming call, the dialed number is given to the other party. Therefore, both the callback function and the redial function can be realized without depending on the user's memory, and the number of function buttons can be reduced, so that the operability is improved.

According to the invention of claim 2, in addition to the effect of claim 1, by displaying "callback" and "redial" in accordance with the state of the flag, the user can know which is which. it can.

[Brief description of the drawings]

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

FIG. 2 is a flowchart showing the operation contents of the telephone under the control of the control unit 1.

[Explanation of symbols]

 1 control unit 2 incoming call detection unit 3 data demodulation unit 4 hook control unit 5 amplification unit 6 handset 7 dial transmission buffer 8 display unit 9 numeric keypad 10 redial / callback key 11 flag holding unit 12 operation unit

Claims (2)

[Claims] 1. A telephone having a call back function and a redial function, comprising: a dial memory for storing dial numbers; a dual-purpose key for receiving redial and call back instructions; and a numeric keypad including numbers 0-9. With an operation unit, a dial transmission means that transmits the dial number of the dial memory when the dual-use key is pressed, and the dial number specified by the key when the numeric key is pressed, and the dial from the exchange when receiving a call. Demodulation means to demodulate the dialed number of the other party based on the data to be written, and writing means to overwrite the dialed dialed number in the dial memory for each outgoing call and the demodulated dialed number in the dial memory for each incoming call And a telephone. 2. The telephone according to claim 1, wherein the content of the dial memory is a demodulated dial number,
When the demodulated dial number is overwritten in the dial memory, the flag is set when the demodulated dial number is overwritten, and when the dial number in the dial memory is transmitted, A flag setting means for resetting the flag when it is set, and a display means for displaying that the callback is possible when the flag is set and displaying that the redial is possible when the flag is reset A telephone characterized by.