JP2002118647A - Facsimile apparatus with cordless telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an extension of a distance capable of transmitting and receiving between a master unit and a slave unit of a cordless telephone and to enable a transmission and a reception even when an obstacle for cutting off a radio wave exists between the master unit and the slave unit of a cordless telephone. SOLUTION: If the cordless slave unit 3 is not disposed in a range capable of transmitting and receiving with the master unit FAX 1, the unit FAX 1 transmits a command signal of the effect that transmitting and receiving radio waves of the unit FAX 1 and the slave unit 3 are routed via a cordless slave unit 2 to the slave unit 2 disposed in a range capable of transmitting and receiving with the unit FAX 1. When the unit 2 receives the command signal from the unit FAX 1, the unit 2 confirms that the slave unit 3 is disposed in a range capable of transmitting and receiving, transmits a response signal of the effect that the transmitting and receiving radio wave with the slave unit 2 can be routed via the slave unit 3 to the unit FAX 1, relays, amplifies and outputs the radio wave to be transmitted and received between the unit FAX 1 and the slave unit 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus with a cordless telephone, and more particularly to a facsimile apparatus with a cordless telephone connected to a telephone line to switch between facsimile communication and voice communication by a telephone.

[0002]

2. Description of the Related Art A conventional facsimile apparatus with a cordless telephone is operated by a facsimile (FA) by an operation or an incoming signal.
The network control circuit of the device connects the telephone line to a fax transmission / reception circuit or a base unit of a cordless telephone. Also,
The base unit of the cordless telephone performs outgoing / incoming processing through a telephone line and communicates with a plurality of cordless telephones through wireless lines.

[0003]

In the above-described conventional facsimile apparatus with a cordless telephone, the talkable distance between the base unit and the child unit of the cordless telephone is determined by the provisions of the Radio Law. The range of the radio wave is about 100 m.

[0004] However, some users have requested that transmission and reception can be performed over a longer distance. In order to satisfy this demand, it is conceivable to use a repeater. However, since the user has to purchase the repeater, there is a problem that the burden of equipment costs increases.

SUMMARY OF THE INVENTION It is an object of the present invention to extend the transmittable / receivable distance between a base unit and a slave unit of a cordless telephone, and to reduce the radio wave between the base unit and the slave unit even when there is an obstacle. An object of the present invention is to provide a facsimile apparatus with a cordless telephone that enables transmission and reception.

[0006]

A facsimile with a cordless telephone according to the present invention comprises: a base unit of a cordless telephone connected to a telephone line through a network control circuit of the facsimile apparatus;
A first cordless handset of a mobile cordless telephone that communicates with this master unit by radio waves, and when the radio wave attenuates between the master unit and the first slave unit and becomes insensitive, And a second handset of a cordless telephone that relays and amplifies the radio wave.

In the facsimile apparatus of the present invention, the base unit of the cordless telephone transmits a signal transmitted and received between a first wireless unit transmitting and receiving by a radio wave of a predetermined frequency and the first wireless unit. It has a modem for modulating or demodulating, and an electric field strength measuring circuit for detecting an insensitive state of a radio wave from the first handset of the cordless telephone.

In the facsimile apparatus with a cordless telephone according to the present invention, when the electric field strength measuring circuit detects an insensitive state of the radio wave through the first radio unit, the facsimile apparatus is connected to a second cordless handset of the cordless telephone. A command generating circuit for generating a command signal for performing relay amplification of the radio wave.

Further, in the facsimile apparatus with a cordless telephone according to the present invention, the second slave unit of the cordless telephone includes a second wireless unit for transmitting and receiving to and from the base unit of the cordless telephone by wireless radio waves of the predetermined frequency; And a third wireless unit that amplifies a signal transmitted and received by the second wireless unit to a prescribed level when receiving a command signal and transmits and receives the signal.

Also, in the facsimile apparatus with a cordless telephone according to the present invention, the second slave unit of the cordless telephone can transmit and receive with the first slave unit of the cordless telephone when detecting the first command. And transmitting a response signal indicating the result of the determination to the base unit of the cordless telephone, and the base unit starts communication with the second slave unit when the response signal indicates that transmission / reception is possible. It is characterized by.

Further, in the facsimile apparatus with a cordless telephone according to the present invention, when the first slave unit of the cordless telephone detects an insensitive state of the radio wave transmitted to the base unit of the cordless telephone, It is characterized in that a command signal is transmitted to a slave unit to relay and amplify a radio wave.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of one embodiment of the present invention.

In this embodiment, in FIG. 1, a base unit FAX (facsimile) 1 includes a radio unit 11 comprising a transmission circuit 12 and a reception circuit 13, a modem 14, a transmission / reception circuit 15, a network control circuit 16, a FAX transmission / reception circuit 17, Having.

The network control circuit 16 responds to a signal from a connected telephone line by a facsimile transmission / reception circuit 17 or a modem 1
4 and output. The modem 14 is connected to the network control circuit 1
6 and a transmission / reception circuit 15 for modulating a control signal and a voice signal and outputting the modulated signal to the radio unit 11, demodulating a signal from the radio unit 11 and outputting the signal to the transmission / reception circuit 15 or the network control circuit 16.

The transmission circuit 12 of the radio unit 11 transmits (radiates) a signal from the modem 14 from the antenna A1 by radio waves of a predetermined frequency. Further, the radio wave from the antenna A2 is received and detected by the receiving circuit 13 of the radio unit 11 and output to the modem 14.

FIG. 2 is a detailed block diagram of the radio unit 11. The electric field strength measuring circuit 18 outputs a control signal when the level in the receiving circuit 13 becomes lower than a preset value. The command generation circuit 19 transmits a command signal for causing the cordless handset 2 to perform relay transmission / reception with the cordless handset 3 from the antenna A1 through the transmission circuit 12 according to the control signal from the electric field strength measurement circuit 18.

The cordless handset 3 has a wireless unit 31 including a transmission circuit 32 and a reception circuit 33, a modem 34, and a transmission / reception circuit 35. The transmission circuit 32 emits a signal from the modem 34 from the antenna B1 by a radio wave of a predetermined frequency. The receiving circuit 33 receives and detects the radio wave from the antenna B2, and outputs the detected radio wave to the modem. The transmission and reception circuit 35 transmits and receives signals to and from the modem 34.

The cordless handset 2 has a radio unit 21 including a transmission circuit 22 and a reception circuit 23, a radio unit 26 including a transmission circuit 27 and a reception circuit 28, a modem 24, and a transmission / reception circuit 25.

The receiving circuit 23 of the radio unit 21 transmits the radio wave from the antenna A1 of the master unit FAX1 to the antenna C2.
Then, the signal is received and detected, and output to the transmission circuits 27 and 24 of the wireless unit 26. Transmission circuit 22 of wireless unit 21
Transmits a signal from the reception circuit 28 of the wireless unit 26 that has received and detected the radio wave from the antenna D2 or a signal from the modem 24 from the antenna C1 to the antenna A2 of the master unit FAX1 by a radio wave of a predetermined frequency. Wireless unit 26
The transmitting circuit 27 transmits a signal from the receiving circuit 23 of the wireless unit 21 from the antenna D1 by a radio wave of a predetermined frequency.

FIG. 3 is a detailed block diagram of the wireless unit 21 of the present embodiment. The command receiving circuit 29 supplies power to the wireless unit 26 via the control circuit 30 when the receiving circuit 23 detects a command signal from the parent device FAX1 to make the wireless unit 26 operative. The transmitting circuit 27 of the wireless unit 26 supplied with power amplifies the signal from the receiving circuit 23 to a certain level and transmits a relay radio wave from the antenna D1.

The receiving circuit 28 amplifies the relay signal received from the antenna D2 to a certain level and outputs the signal to the transmitting circuit 22 of the wireless unit 21. The transmission circuit 22 transmits the relay signal from the antenna C1 as a radio wave.

Next, the operation of this embodiment will be described. When the cordless handset 3 is in a range where transmission and reception can be performed with the base unit FAX1, the radio wave transmitted from the transmission circuit 12 in the radio unit 11 of the base unit FAX1 is transmitted from the antenna A1 to the radio unit of the cordless handset 3 through the antenna B2. 31
Is received by the receiving circuit 33. Conversely, cordless handset 3
The radio wave transmitted from the transmitting circuit 32 in the wireless unit 31 is received by the receiving circuit 13 in the wireless unit 11 of the base unit FAX1 from the antenna B1 through the antenna A2.

When the cordless handset 3 is not within the range in which transmission / reception is possible with the base unit FAX1, the level of the received signal received by the electric field strength measurement circuit 18 shown in FIG. And outputs a control signal. The command generation circuit 19 controls the cordless slave unit 2 within a range that can be transmitted and received with the master unit FAX 1 by the input control signal.
The transmission circuit 12 transmits a radio wave of a command signal for causing the cordless handset 3 to pass (relay) a radio wave transmitted / received between the base unit FAX 1 and the cordless handset 2 via the antenna A.
1 to the cordless handset 2 via the antenna C2.

The cordless handset 2 transmits a radio wave of a command signal from the base unit FAX1 to the radio unit 2 from the antenna C2.
When the reception circuit 23 receives the signal, the cordless handset 2 confirms that the cordless handset 3 is within the range in which the cordless handset 3 can transmit and receive. The wireless unit 2 sends a response signal to the effect
One transmission unit 22 is connected to the antenna A2 from the antenna C1.
Circuit 1 of the wireless unit 11 of the base unit FAX1 through
Send to 3.

The transmission circuit 12 of the base unit FAX 1 that has received the response signal transmits a radio wave to be transmitted from the antenna A 1 to the cordless handset 3 through the antenna C 2, and the cordless handset 2 transmits the radio wave from the antenna C 2 in the radio unit 21. Is received by the receiving circuit 23 and output to the transmitting circuit 27 of the wireless unit 26.
Is transmitted from the antenna D1 to the receiving circuit 33 of the wireless unit 31 of the cordless handset 3 through the antenna B2. The receiving circuit 33 of the cordless handset 3 receives the radio wave relayed by the cordless handset 2 and outputs it to the modem 34, and the modem 34 outputs the demodulated voice signal to the transmission / reception circuit 35.

Conversely, the voice signal from the transmitting / receiving circuit 35 is
Radio waves modulated by the modem 34 and transmitted from the transmission circuit 32 of the wireless unit 31 of the cordless device 3 are radiated from the antenna B1. The radio wave from antenna B1 is antenna D2
The relay signal received by the receiving circuit 28 in the wireless unit 26 of the cordless handset 2 is output to the wireless unit 21 through. The transmission circuit 22 in the wireless unit 21 transmits a radio wave of a relay signal from the antenna C1. Parent machine FA
The receiving circuit 13 of the wireless unit 11 of X1 has an antenna C
1 is received through the antenna A2 and output to the modem 14. The modem 14 outputs a voice signal obtained by demodulating the signal from the receiving circuit 13 to the transmitting / receiving circuit 15. In this way, even when the distance between the base unit FAX1 and the cordless handset 3 is long or the radio wave does not reach due to an obstacle, the cordless handset 2 can realize transmission and reception by relaying the radio wave.

In the description of the present embodiment, it is assumed that the command signal for transmitting the radio wave to the cordless handset 2 is transmitted by the base unit FAX1. When the cordless handset 3 operates before the FAX 1, the command signal may be transmitted from the cordless handset 3 to the cordless handset 2.

FIG. 4 is a block diagram showing a second embodiment of the present invention. The master FAX 101 is the master FAX 1 of FIG.
Cordless handsets 201, 20
2 and 301 also have the same internal circuit as cordless handset 2 of FIG. When the cordless handset 301 is not within the range that can be transmitted and received with the base FAX 101, the base FAX 101
A command signal for causing the cordless slave units 201 and 202 to perform a relay operation of transmission to the cordless slave unit 301 is:
It is transmitted to the cordless handset 201. Cordless cordless handset 20
When receiving the command signal from the parent machine FAX 101, the device 1 confirms that the cordless child machine 301 is within a transmittable range, and returns a response signal to the parent machine FAX 101.

Similarly, master device FAX 101 performs the relay operation of reception from cordless slave device 301 by cordless slave device 2.
02 to the cordless slave unit 2
02. The cordless child device 202 is a parent device FAX
When the command signal is received from the base unit F, it is confirmed that the cordless handset 301 is within a receivable range.
A response signal is sent back to AX101.

Next, the transmission circuit 12 of the parent machine FAX 101
Transmits the radio wave transmitted to the cordless handset 301 to the wireless unit 221 of the cordless handset 201. When receiving the radio wave from the base unit FAX1, the receiving circuit 223 of the cordless handset 201 outputs the radio wave to the transmitting circuit 227 through the modem 224A, and the transmitting circuit 227 transmits the radio wave to the cordless handset 301. Cordless cordless handset 301
Receives the radio wave from the cordless handset 201.

Conversely, the transmission circuit 3 of the cordless handset 301
Reference numeral 32 sends a radio wave to be transmitted to the parent device FAX 101 to the cordless child device 202. The receiving circuit 228 of the cordless handset 202 receives the radio wave from the cordless handset 301 and outputs it to the transmitting circuit 222 through the modem 224B. I do. Receiving circuit 113 of parent machine FAX 101 receives the radio wave.

In this way, the first and (second) embodiments correspond to the master FAX 1 (101) and the cordless slave 3
Cordless handset 2 (202)
And relaying the transmission / reception radio waves, the communication distance between the master unit and the slave unit can be extended.

[0033]

As described above, according to the present invention, the first effect is that when wireless communication between the base unit of the cordless telephone and the first cordless handset performing the call becomes impossible, By making the second cordless handset perform the relay operation, the communication distance can be extended.

[0034] The reason is that transmission / reception can be performed via (relaying) via a slave unit disposed between the slave unit and the master unit used by the user and different from the slave unit used by the user. It is.

The second effect is that even if there is an obstacle that blocks radio waves between the base unit and the slave unit of the cordless telephone, transmission and reception can be performed so as to bypass the obstacle.
The reason is that transmission / reception can be performed via a cordless telephone handset arranged so as to bypass an obstacle.

[Brief description of the drawings]

FIG. 1 is a block diagram of a first embodiment of the present invention.

FIG. 2 is a detailed block diagram of a wireless unit 11 according to the embodiment.

FIG. 3 is a detailed block diagram of a wireless unit 21 of the present embodiment.

FIG. 4 is a block diagram of a second embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 parent machine FAX 2 cordless cordless handset 3 cordless cordless handset 11 wireless unit 12 transmission circuit 13 reception circuit 14 modem 15 transmission / reception circuit 16 network control circuit 17 fax transmission / reception circuit 18 electric field strength measurement circuit 19 command generation circuit 21 wireless unit 22 transmission circuit 23 Receiving Circuit 24 Modem 25 Transmitting and Receiving Circuit 26 Wireless Unit 27 Transmitting Circuit 28 Receiving Circuit 29 Command Receiving Circuit 30 Control Circuit

Claims (6)

[Claims] 1. A cordless telephone base unit connected to a telephone line through a network control circuit of a facsimile apparatus, a mobile cordless telephone first slave unit communicating with the base unit by radio waves, A cordless telephone comprising: a cordless telephone second handset that relays and amplifies the radio wave when the radio wave is attenuated and becomes insensitive between the handset and the first handset. Facsimile machine with. 2. A base unit of the cordless telephone, comprising: a first wireless unit for transmitting and receiving by radio waves of a predetermined frequency; a modem for modulating or demodulating a signal to be transmitted and received between the first wireless unit; 2. The facsimile apparatus with a cordless telephone according to claim 1, further comprising: an electric field strength measuring circuit for detecting a state of inactivity of a radio wave from the first cordless handset of the cordless telephone. 3. When the electric field strength measuring circuit detects a dead state of the radio wave through the first radio unit, the circuit performs relay amplification of the radio wave to a second slave unit of the cordless telephone. 3. A facsimile apparatus with a cordless telephone according to claim 2, further comprising a command generation circuit for generating a command signal to be transmitted. 4. A second wireless unit for transmitting and receiving to and from the base unit of the cordless telephone using the radio wave of the predetermined frequency, and a second wireless unit for transmitting and receiving the command signal. 4. A facsimile apparatus with a cordless telephone according to claim 2, further comprising a third wireless unit for amplifying a signal transmitted and received by said wireless unit to a prescribed level and transmitting and receiving the signal. 5. A second handset of the cordless telephone determines whether or not transmission / reception with the first handset of the cordless telephone is possible when detecting the command signal, and indicates a result of the determination. The cordless telephone according to claim 4, wherein a response signal is transmitted to a base unit of the cordless telephone, and the base unit starts communication with the first handset when the response signal indicates that transmission / reception is possible. Facsimile machine. 6. A first handset of the cordless telephone transmits a command signal to the second handset when detecting a dead state of a radio wave transmitted to a base unit of the cordless telephone. 3. A facsimile apparatus with a cordless telephone according to claim 1, wherein the radio wave is relayed and amplified.