JPH0927846A - Portable telephone set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make dialing simples even when a public telephone set is in use when the portable telephone set is outside the service area. SOLUTION: The telephone set is provided with a DTMF signal generating circuit 59 generating a DTMF signal corresponding to a telephone number entered by a key 5 or stored in a memory 53. In the case of using a public telephone set or the like, a telephone number entered by a telephone number key 5 or stored in the memory 53 is designated, and a DTMF signal corresponding to the telephone number is outputted from a speaker 3. When the signal generating the DTMF signal is close to a handset of the public telephone set or the like, the telephone number is entered without direct entry of the telephone number to the public telephone set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device, and more particularly to a portable telephone device having a telephone number memory function.

[0002]

2. Description of the Related Art Mobile telephones have shifted from an analog system in which FM signals are initially FM-modulated for communication to a digital system in which voice signals are digitized and time-division multiplexed for communication. In addition, a simple mobile phone that uses a public phone or the like as a simple base station to reduce power consumption is becoming widespread. These mobile phones communicate using radio waves. Therefore, it is possible to make and receive calls from anywhere within the service area where radio waves reach, and further spread is expected.

By the way, a normal mobile phone is provided with a memory function for storing a telephone number. This memory function is such that, for example, if the telephone number of the other party is stored in correspondence with the abbreviated number, if the abbreviated number of the other party is input thereafter, the telephone number of the other party can be called.

A user who frequently uses a mobile phone is
Due to this memory function, it is no longer possible to carry around a memo pad with a telephone number written down. This is because if the telephone number of the other party is registered, when the user wants to make a call to the other party, all he / she has to do is enter the shortened number of the other party.

A mobile phone having a memory function of a telephone number has an advantage that a call can be made and received from anywhere as long as it is in a service area where radio waves reach, and it is also possible to carry a memo pad with the telephone number written down. There is an advantage that it is not necessary.

[0006]

However, mobile phones can communicate only within the service area where radio waves reach. You will not be able to make or receive calls outside the service area or in the underground or in buildings where radio waves do not reach. Expansion of service areas and expansion of facilities that allow mobile phones to be used in underground areas and buildings are being attempted, but the reality is that there are areas where mobile phones cannot be used.

[0007] In the underground or in a building where the radio wave does not reach or which is out of the service area, at present, it is necessary to give up the use of the mobile phone and use the public phone or the like. However, with a mobile phone that has a memory function for telephone numbers,
While this memory function can be used to easily make a call to the other party, in a public telephone or the like, when making a call, the telephone number of the other party must be entered. People who frequently use mobile phones often have a memory function of their mobile phones, so they often do not carry a memo pad with their phone numbers written down. If not, it becomes very difficult to enter the telephone number of the other party using a public telephone or the like.

Therefore, an object of the present invention is to provide a portable telephone device which can easily make a call even when using a public telephone or the like.

[0009]

According to the present invention, a storage means for storing a telephone number, a calling means for controlling a call to the inputted telephone number or a telephone number stored in the storage means, and an input The portable telephone device is provided with a tone signal forming means for forming a tone signal corresponding to the stored telephone number or the telephone number stored in the storing means, and a voice output means for outputting the tone signal.

When a telephone number is input or a telephone number stored in the storage means is designated, a tone signal corresponding to this telephone number is output from the voice output means. If this tone signal is brought close to a handset such as a public telephone, the telephone number can be input without directly inputting the telephone number into the public telephone.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an external configuration of a mobile phone to which the present invention is applied. In FIG. 1, reference numeral 1 denotes a mobile phone main body, and an antenna 2 is provided at the top of the mobile phone main body 1 so as to extend and contract. Also,
On the front surface of the mobile phone body 1, a speaker 3, a display panel 4, key buttons 5, an incoming call operation display unit 6, a microphone 7 are provided.
Is provided. The key buttons 5 include a call key 5A, a function key 5B, a DTMF generation key 5C, etc. in addition to the ten keys.

This mobile phone is provided with a memory function. With this memory function, the telephone number of the other party can be stored in association with the shortened number. At the time of making a call, the telephone number or abbreviated number of the other party is input using the ten-key pad of the key button 5. Here, when the call key 5A is pressed, a calling operation for connecting to the other party is performed. At the time of an incoming call, the incoming call operation display section 6 is turned on, and at the same time, a bell is rang to notify the incoming call. Here, when the call key 5A is pressed, the call state is set.

This mobile phone body 1 is composed of a DTMF (Dual T
It has the function of generating one Multi-Freqeucy signal. When this DTMF generation function is used, for example, by operating the DTMF generation key 5C, the D corresponding to the telephone number input
The speaker 3 can generate a TMF signal or a DTMF signal corresponding to a telephone number stored in advance by a memory function. This DTMF signal generation function can be used to easily enter a telephone number, for example, when a public telephone or the like is used outside the service area or in an underground or building where radio waves do not reach. .

That is, as shown in FIG.
When making a call with 1, the mobile phone body 1 is brought close to the handset 12 of the public phone 11. And
The DTMF generating function of the mobile phone body 1 causes the speaker 3 to generate a DTMF signal corresponding to the telephone number.
This DTMF signal is the handset 12 of the public telephone 11.
Is entered from

In a public telephone or the like, a DTMF signal corresponding to the inputted telephone number is generated, and the calling work is performed by transmitting the DTMF signal to the exchange through the telephone line. Therefore, the DTMF signal is generated externally. Calling can be performed by inputting the sound of the DTMF signal.

In this way, the calling operation can be performed without directly inputting the telephone number into the public telephone 11. Since a plurality of telephone numbers can be registered in advance in the mobile phone main body 1 by the memory function, the public telephone 11 can easily make a call using the mobile phone main body 1.

The function of generating the DTMF signal is
In addition to the generation by the F generation key 5C, the generation may be controlled depending on whether or not the mobile phone can be used. That is, when the caller's telephone number or abbreviated number is input to make a call, if the mobile phone body 1 is available, a normal call operation is performed, and the caller leaves the service area or the radio wave In the underground or in a building that cannot be reached, a DTMF signal corresponding to the telephone number is generated from the speaker 3.

Further, in addition to the DTMF signal corresponding to the telephone number registered in advance by the memory function, a DTMF signal corresponding to the appropriately processed telephone number may be generated according to a user's instruction. That is, for example, a number obtained by removing the area code from a pre-registered telephone number, or a pre-registered telephone number that is a mobile phone identification number 03
The telephone number is appropriately processed so that the number becomes 0 or 040. This is due to the difference in conditions such as the approximate distance between the incoming and outgoing telephones or whether or not the incoming and outgoing telephones are in the same city. This is because the method of making a call, that is, the number to be input to each telephone is changed, and this change is dealt with.

FIG. 3 shows an internal structure of a mobile phone body 1 to which the present invention is applied. The mobile phone body 1 is configured as an analog mobile phone.

In FIG. 3, reference numeral 51 is a call control circuit. The call control circuit 51 controls the entire mobile phone such as processing at the time of making or receiving a call and setting the frequency. An input is given to the call control circuit 51 from the key 5. As described above, the key 5 includes a ten-key for inputting a telephone number and the like, a call key 5A, a function key 5B, a DTMF generation key 5C and the like.

The call control circuit 51 includes a memory 53.
Is provided. The memory 53 is prepared for realizing the telephone number memory function. In this memory 53, it is possible to store the telephone numbers of a plurality of destinations corresponding to the shortened numbers.

The display output of the call control circuit 51 is supplied to the display panel 4 via the driver 64. The display panel 4 is, for example, a liquid crystal display. The display panel 4 displays operating states such as incoming and outgoing calls and telephone numbers.

Reference numeral 54 is a transmitter circuit, and 55 is a receiver circuit.
A voice signal is supplied from the microphone 7 to the transmitting circuit 54. The transmitter circuit 54 amplifies the input audio signal under the control of the call control circuit 51. The output of the transmission circuit 54 is supplied to the modulation / demodulation circuit 58.

The receiver circuit 55 is provided with the speaker 3. The reception circuit 55 amplifies the reception signal from the modulation / demodulation circuit 58 and supplies it to the speaker 3. Also, the receiving circuit 55
Amplifies the DTMF signal from the DTMF generating circuit 59 and supplies it to the speaker 3. From the speaker 3, the voice or the DTMF signal from the other party is output.

The DTMF generating circuit 59 is used by the call control circuit 5
DTM corresponding to the telephone number input by the key 5 or the telephone number stored in the memory 53 under the control of 1.
Generate an F signal.

The modulation / demodulation circuit 58 modulates the input audio signal and demodulates the received signal. In an analog mobile phone, FM modulation is used as a modulation system.

At the time of transmission, the output of the modulation / demodulation circuit 58 is supplied to the radio wave transmission / reception circuit. Further, at the time of reception, the output of the radio wave transmitting / receiving circuit 60 is supplied to the modulation / demodulation circuit 58. At the time of transmission, the radio wave transmission / reception circuit 60 converts the transmission signal into a signal of a predetermined frequency, for example, 800 MHz band, amplifies the power, and transmits the signal. At the same time, upon reception, a reception signal of a predetermined frequency is selected and converted into a predetermined intermediate frequency. The transmission signal is
It is output from the antenna 2. The received signal is received by the antenna 2.

Reference numeral 62 is an incoming call detection circuit. The incoming call detection circuit 62 detects an incoming call from the received signal and gives this detection signal to the call control circuit 51. When an incoming call is detected by the incoming call detection circuit 62, the incoming call operation display section 6 is turned on and at the same time a bell is sounded to notify the incoming call. Then, when the call key 5A is pressed, the call state is set.

Reference numeral 63 is a reception strength detection circuit. The received signal strength circuit 63 detects the strength of the received signal. The output of the received signal strength detection circuit 63 is supplied to the call control circuit 51. The call control circuit 51 determines whether or not a call is possible based on the reception strength.

A memory 53 is provided in the mobile phone to which the present invention is applied. In this memory 53, for example, a telephone number can be stored in correspondence with the abbreviated number.

Normally, when making a call, a telephone number is input by the key 5 or a telephone number stored in advance in the memory 53 is called. When the call key 5A is pressed, the call control circuit 51 generates a command for connecting to this telephone number. This command is transmitted from the antenna 2 via the transmission circuit 54, the modulation / demodulation circuit 58, and the radio wave transmission / reception circuit 60. Then, a calling operation for connecting to the other party is performed.

For example, when it is necessary to use a public telephone or the like outside the service area or in an underground or building where radio waves do not reach, the DTMF function is used. In this case, at the time of calling, the telephone number is input by the key 5 or the telephone number previously stored in the memory 53 is selected. Then, the DTMF generating circuit 59 generates a DTMF signal corresponding to this telephone number. This D
The TMF is output from the speaker 3.

That is, FIG. 4 is a flow chart showing an example of the control at this time. In this example, the DTMF generation key 5C is operated to generate a DTMF signal when a call is made.

As shown in FIG. 4, in the standby state, it is determined whether a telephone number is input or a telephone number stored in advance in the memory 53 is selected (step S1). When the telephone number is input or the telephone number stored in advance in the memory 53 is selected, it is determined whether the call key 5A has been pressed (step S2).

If the call key 5A is pressed, a normal call operation is performed (step S3), and when the call operation is completed (step S4), the call state is set (step S).
5).

If the call key 5A is not pressed in step S2, it is determined whether the DTMF generation key 5C is pressed (step S6). When the DTMF generation key 5C is pressed, the telephone number data is processed as needed (step S7), and the DTMF signal corresponding to this telephone number is generated (step S8). Then, the initial standby state is restored.

In step S1, the telephone number is input or the telephone number prestored in the memory 53 is selected.
If it is determined in step S2 that the call key 5A has not been pressed, and if it is determined in step S6 that the DTMF generation key 5C has not been pressed, then it is determined whether a predetermined time has elapsed (step S9). Then, if there is no input after a predetermined time has passed, the input is reset (step S1
0), the initial standby state is returned.

FIG. 5 is a flowchart showing another example of control. In this example, a DTMF signal is generated when a call is made depending on whether the mobile phone is usable.

As shown in FIG. 5, in the standby state, it is determined whether a telephone number is input or a telephone number stored in advance in the memory 53 is selected (step S11).
When the telephone number is input or the telephone number stored in advance in the memory 53 is selected, it is determined whether or not the call key 5A is pressed (step S12).

When the call key 5A is pressed, it is determined whether a call can be made (step S13). Whether or not a call can be made can be determined from the output of the received signal strength detection circuit 63.

When it is judged that the call can be made, a normal call operation is performed (step S14), and when the call operation is completed (step S15), the call state is set (step S16).

If it is determined in step S13 that the call cannot be made, the telephone number data is processed as needed (step S17), a DTMF signal corresponding to this telephone number is generated (step S18), and the system returns to the standby state. Be done.

In step S11, the telephone number is input or the telephone number stored in advance in the memory 53 is selected, but it is determined in step S12 that the call key 5A has not been pressed, and whether or not a predetermined time has elapsed. It is determined (step S19). Then, if there is no input after a predetermined time has elapsed, the input is reset (step S20) and the initial standby state is restored.

In the above description, the mobile phone is of analog type, but the present invention can be similarly applied to the mobile phone of digital type.

[0045]

According to the present invention, when the telephone number of the other party is designated, the DTMF signal corresponding to this telephone number is output. When this DTMF signal is brought close to a handset such as a public telephone, the telephone number can be input without directly inputting the telephone number into the public telephone. For this reason, even if you cannot use your mobile phone outside the service area or in the basement or building where the radio wave does not reach, you can use the memory function of the mobile phone to enter the phone number with a public phone. .

[Brief description of drawings]

FIG. 1 is a plan view showing an external configuration of a mobile phone to which the present invention is applied.

FIG. 2 is a perspective view used for explaining a mobile phone to which the present invention is applied.

FIG. 3 is a block diagram showing an internal configuration of a mobile phone to which the present invention is applied.

FIG. 4 is a flowchart used to describe an example of a mobile phone to which the present invention is applied.

FIG. 5 is a flowchart used for explaining another example of the mobile phone to which the present invention is applied.

[Explanation of symbols]

 1 Mobile Phone Main Body 3 Speaker 7 Microphone 51 Call Control Circuit 53 Memory 59 DTMF Generation Circuit

Claims (3)

[Claims] 1. A storage means for storing a telephone number, a calling means for controlling a call to the input telephone number or a telephone number stored in the storage means, and the input telephone number or the above A portable telephone device provided with tone signal forming means for forming a tone signal corresponding to the telephone number stored in the storing means, and voice output means for outputting the tone signal. 2. At the time of calling, the calling control operation to the telephone number by the calling means and the tone signal forming operation corresponding to the telephone number by the tone signal forming means are selectively performed. The mobile phone device according to claim 1. 3. A call enable detection means for detecting whether or not a call can be made is provided, and when a call is made, a call control operation to a telephone number by the call means and a telephone number by the tone signal forming means are supported. The mobile telephone device according to claim 1, wherein the tone signal forming operation for selectively performing the operation is selectively performed according to the detection result of the call detection means.