JP2000349890A - Portable phone and callback control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct callback control without the need of a large-scale system and troublesome operations. SOLUTION: A telephone number collation/storage section 14 registers one or a plurality of telephone numbers of fixed network telephone sets. When the portable phone receives a signal from a telephone set, the portable phone decides whether or not a telephone number of the telephone set sending the received signal is coincident with any of telephone numbers of fixed network telephone sets to be registered. When the telephone number of a caller is matched with the telephone number of the fixed network telephone set registered in advance in the telephone number collation/storage section 14, a CPU 6 calls back the fixed telephone set of the caller. Callback control is conducted without provision of a specific system in a radio channel fixed network 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, and in particular, when a portable telephone receives a call from a fixed-line telephone, temporarily disconnects the call and calls the fixed-line telephone again (callback). ) To reduce a call charge.

[0002]

2. Description of the Related Art When a call is made between a mobile phone and a fixed network telephone, a call charge when a call is made from the fixed network telephone to the mobile phone and a call when a call is made from the mobile telephone to the fixed network telephone. Fees may vary. If the call charge when calling from the fixed network phone to the mobile phone is higher than the call charge when calling from the mobile phone to the fixed network phone, the mobile phone receives the call from the fixed network phone. By temporarily disconnecting the call and calling back to the fixed network telephone, the call charge can be reduced. Such control is called callback control.

FIG. 2 shows a portable telephone 23 for performing a conventional callback control method.

[0004] The conventional portable telephone 23 has a microphone 1
, Speaker 2, and a linear codec unit (Codec unit)
c) 3, an audio processing unit (DSP) unit 4 for compressing and expanding the digitized audio signal, and a TDMA (Time).
Division Multiple Accesses
s) Processing unit 5, CPU 16, transmitting / receiving unit 7, RF
(Radio Frequency) unit 8 and antenna 9.

Further, a mobile telephone system is constituted by a base station 10, which establishes a wireless line for communication with a portable telephone 23, a telephone line fixed network 21, and a fixed network telephone 12. . In the telephone line fixed network 21, a callback system 22 is provided.
In the callback system 22, telephone numbers of one or a plurality of fixed network telephones for which a callback is desired are registered in advance for each mobile telephone.

In this conventional mobile telephone system, when a call is made from the fixed network telephone 12 to the mobile telephone 23, the callback system 22 sets the telephone number of the fixed network telephone 12 to the mobile telephone 23 in advance. It is determined whether or not the telephone is registered. If the telephone is registered, the telephone calls back to the telephone
2 and the mobile phone 23 were connected.

[0007] The callback system 22 needs to be realized by a repeater having a circuit dedicated to receiving and a circuit dedicated to calling, and the mobile telephone system becomes a large-scale system. In addition, the telephone number of the fixed network telephone that performs the callback must be registered in the callback system 22 in advance. Therefore, when the registration is changed, a complicated operation is required, so that the degree of freedom is low.

[0008]

However, the following problems arise when the callback control is performed by the above-described conventional callback control method and the portable telephone. (1) Since a callback system must be provided in the telephone line fixed network, a large-scale system is required. (2) The fixed network telephone that performs the callback must be registered in the callback system in the telephone line fixed network, and the operation is complicated, and the degree of freedom is low.

It is an object of the present invention to provide a callback control method and a portable telephone which do not require a large-scale system and do not require complicated operations even when performing callback control.

[0010]

In order to achieve the above object, a portable telephone according to the present invention has a telephone number of one or more fixed network telephones registered therein, and a telephone number of a telephone which has transmitted a received signal. Telephone number checking / holding means for determining whether the telephone number matches the telephone number of the registered fixed network telephone, and the signal is originated from the registered fixed telephone by the telephone number / holding means. If it is determined that the call is the one, a call-back control unit is provided to call back the fixed network telephone after disconnecting the line once.

[0011] In the portable telephone of the present invention, the telephone number of the fixed network telephone to be called back is registered in advance in the telephone number collating / holding means, and the signal transmitted from the fixed network telephone of the registered telephone number is registered. Is received from the portable telephone to the fixed network telephone. Therefore, the callback control can be realized without requiring a large-scale system and without requiring a complicated operation.

In another portable telephone of the present invention, it is determined whether or not the telephone number of the telephone that originated the received signal matches the telephone number of the fixed network telephone registered in the connected module. Telephone number collating / holding means, and if the telephone number / holding means determines that the signal is originated from the registered fixed telephone set, the line is temporarily disconnected and then the fixed network It has callback control means for making a callback to the telephone.

In the portable telephone of the present invention, the telephone number of the fixed network telephone to be called back is stored not in the portable telephone but in a module connected to the portable telephone.

Further, another portable telephone according to the present invention is characterized in that, when the telephone number collating / holding means determines that the signal is originated from the registered fixed telephone, the call is made. There is further provided a means for setting whether to perform backing. According to the mobile phone of the present invention, the user can select whether or not to perform the callback.

[0015]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. (First Embodiment) FIG. 1 is a block diagram showing a configuration of a portable telephone 13 for performing a callback control method according to a first embodiment of the present invention. Components denoted by the same reference numerals in FIG. 2 indicate the same components.

The mobile phone 13 in the present embodiment is obtained by replacing the CPU 16 with the CPU 6 in the conventional mobile phone 23 shown in FIG.
6 is provided with a telephone number collating / holding unit 14.

The telephone number collating / holding unit 14 registers the telephone numbers of one or more fixed network telephones and matches the telephone number of the fixed network telephone in which the telephone number of the telephone that issued the received signal is registered. It is determined whether or not to do. The telephone number of the telephone that has called the received signal can be known on the receiving side by using a number notification system. In this case, the telephone number of the telephone that called the received signal may be displayed on a display panel or the like (not shown).

In the mobile telephone system according to the present embodiment, the telephone line fixed network 11 is replaced with the telephone line fixed network 21 in the conventional mobile telephone system shown in FIG.
It is provided with. The telephone line fixed network 11 is obtained by removing the callback system 22 from the telephone line fixed network 21.

Next, the operation of the mobile phone according to the present embodiment will be described in detail with reference to the drawings.

The signal received by the TDMA processing unit 5 is processed after being divided into two signals, an information channel for transmitting voice and user information and a control channel for transmitting control information. These channels include the telephone number of the transmission source of the received signal. The signal is detected, and an inquiry is made to the telephone number stored in the telephone number collating / holding unit 14 in the CPU 6. If the telephone number of the transmission source matches the telephone number of the fixed network telephone registered in the telephone number collating / holding unit 14 in advance, the CPU
6, a callback is made to the fixed telephone of the transmission source.

By using the mobile phone 13 of the present embodiment, the call fee varies depending on the call direction (from the mobile phone to the fixed network phone or from the fixed network phone to the mobile phone), and the call fee from the fixed network phone to the mobile phone is reduced. If the price is high, the mobile phone detects and selects the call direction, performs a call back, eliminates complicated operations and waiting time of the user, and can reduce the call charge. Further, it is not necessary to add or construct new hardware or a large-scale and complicated repeater only by using the telephone number notification system.

Furthermore, the present invention is not limited to the case where the callback is always performed when the telephone number of the received signal is stored in the telephone number collating / holding unit 14, but the callback is not always performed. The user may be able to select whether or not to perform.

(Second Embodiment) Next, a callback control method according to a second embodiment of the present invention will be described.

In the present embodiment, callback control is realized by connecting a module to an external input / output terminal (16 cores) provided in a mobile phone. In this module, a TDMA processing unit and a CPU are separately provided, and a reception signal of the mobile phone is processed in this module to realize callback control. In the present embodiment, it is possible to select whether or not to perform the callback based on whether or not the module is connected.

As described above, according to the callback control method of the present invention, since the telephone number of the fixed network telephone to be called back is registered in each portable telephone, the callback control is performed. Even in such a case, there is an effect that a large-scale system is not required and a complicated operation is not required.

[Brief description of the drawings]

FIG. 1 is a mobile phone 1 according to a first embodiment of the present invention.
FIG. 3 is a block diagram showing a configuration of No. 3;

FIG. 2 is a block diagram showing a configuration of a conventional mobile phone 23.

[Explanation of symbols]

 Reference Signs List 1 microphone 2 speaker 3 linear codec unit (Codec) 4 audio processing unit (DSP) 5 TDMA processing unit 6 CPU 7 transmitting / receiving unit 8 RF unit 9 antenna 10 base station 11 telephone line fixed network 12 fixed network telephone 13 mobile telephone 14 telephone Number collation / holding unit 16 CPU 21 Fixed telephone line network 22 Callback system 23 Mobile phone

Claims (6)

[Claims] 1. The fixed-network telephone in which telephone numbers of one or more fixed-network telephones are registered in advance in the mobile telephone, and a telephone number of a telephone that has transmitted a received signal is registered in the mobile telephone. It is determined whether or not the telephone number matches the telephone number, and if it is determined that the signal is originated from the registered fixed network telephone, the line is temporarily disconnected and then the fixed network telephone is A callback control method that performs callback. 2. A telephone number of one or a plurality of fixed network telephones is registered in a module in advance, and a telephone number of a telephone which has issued a received signal is registered in the module connected to the mobile telephone. It is determined whether or not the telephone number matches the telephone number of the fixed network telephone, and if it is determined that the signal is originated from the registered fixed network telephone, the line is temporarily disconnected and then the fixed telephone is disconnected. A callback control method for making a callback to a network telephone. 3. The method according to claim 1, wherein when it is determined that the signal is originated from the registered fixed-network telephone, a setting as to whether or not to perform a callback can be performed. Callback control method. 4. The telephone number of one or a plurality of fixed network telephones is registered, and it is determined whether or not the telephone number of the telephone that has issued the received signal matches the telephone number of the registered fixed network telephone. Telephone number collating / holding means; and if the telephone number / holding means determines that the signal originated from the registered fixed telephone set, the line is temporarily disconnected and then the fixed network A mobile phone having callback control means for making a callback to the telephone. 5. A telephone number collating / holding means for determining whether a telephone number of a telephone which has issued a received signal matches a telephone number of a fixed network telephone registered in a connected module, and If it is determined by the telephone number / holding means that the signal originated from the registered fixed network telephone, a call for once disconnecting the line and calling back to the fixed network telephone A mobile phone having a back control means. 6. The telephone number checking / holding means,
6. The apparatus according to claim 4, further comprising means for setting whether or not to perform a callback when it is determined that the signal is originated from the registered fixed network telephone. Mobile phone.