JPH05327613A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To provide a cordless telephone set by which a desired line interface is selected in response to a kind of a transmission signal and high speed and high quality copy transmission is attained while suppressing a communication error at copy transmission. CONSTITUTION:A slave set 102 of the cordless telephone set has a control signal transmission reception section 14, and a master set 101 has a facsimile hybrid 4, a speech network 5, a cordless telephone control section 7 which receives a control signal from the control signal transmission reception section 14, selects any line interface of the speech network 5 or the facsimile hybrid 4 and outputs a selection signal representing the selected result, and a changeover device 3 which receives the selection signal from the cordless telephone control section 7 to connect only the selected line interface between a telephone line 1 and a reception section 8 or between the line 1 and a transmission section 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone, and for example, a slave unit has a facsimile transmission / reception function, and is communicated with a partner terminal device via a master unit that wirelessly exchanges signals with the slave unit. The present invention relates to a cordless telephone that can send and receive image signals.

[0002]

2. Description of the Related Art Conventionally, a cordless telephone of this type is shown in FIG. In this cordless telephone, the voice signal received from the other terminal device via the telephone line 31 is transmitted from the transmitting unit 37 of the parent device 201 to the child device 202 via the speech network 33 as a line interface. The handset 202 receives the voice signal at the receiving unit 49 via the antenna 51, and transmits the voice signal to the telephone unit 41.

A voice signal input from the telephone unit 41 of the child device 202 is transmitted from the transmitting unit 50 to the parent device 201 and is received by the receiving unit 36 of the parent device 201, and the speech network 33 and the telephone line 31 are received. Is transmitted to the terminal device of the other party via the.

Furthermore, the cordless telephone handset 20
The reference numeral 2 is provided with a copy transmission section constituted by a modem (modulation / demodulation apparatus) 42, an image processing section 43, a reading section 46 and a printing section 47, and communicates with the other terminal device via the master unit 201 and the telephone line 31. You can send and receive image signals with.

[0005]

By the way, in the above-mentioned conventional cordless telephone, when a user uses the copying transmission section to transmit and receive an image signal to and from the other party's terminal device, this image is transmitted. The speech network 33 is used as a line interface for signals.

However, the above speech network 33
Is a line interface configured to perform optimum signal conversion for a voice signal during a voice call, and the signal conversion characteristic is not appropriate for an image signal. Therefore, the conventional cordless telephone, which uses the speech network 33 as a line interface for converting the image signal during the copy transmission, has a problem that communication errors frequently occur during the copy transmission. There is a problem that it becomes difficult.

Therefore, an object of the present invention is to select a desired line interface according to the type of a transmission signal, and especially to suppress a communication error at the time of copying transmission, and to realize high-speed copying transmission with high quality. It is to provide a cordless telephone that can.

[0008]

To achieve the above object, in the cordless telephone set forth in the first aspect of the present invention, each of the master unit and the slave unit has a wireless means, and the master unit is connected to a telephone line. In the cordless telephone in which signals are wirelessly exchanged between the master unit and the slave unit, the slave unit has control signal transmitting means for transmitting a control signal to the master unit via the wireless means. , The master unit is connected between the telephone line and the wireless unit, and has a plurality of different line interfaces for converting signals exchanged between the telephone line and the wireless unit, and the slave unit of the slave unit. By receiving the control signal from the control signal transmitting means via the wireless means,
Selection means for selecting one line interface from the plurality of line interfaces based on the control signal and outputting a selection signal representing the selected line interface; and receiving the selection signal, the selection means. It is characterized in that it has switching means for connecting only one line interface between the telephone line and the wireless means.

According to the second aspect of the present invention, each of the master unit and the slave unit has a wireless unit, the slave unit has a copy transmission unit, and the master unit is connected to a telephone line. In a cordless telephone that wirelessly exchanges signals between a master unit and a slave unit, the slave unit has a control signal transmitting unit that transmits a control signal to the master unit via the wireless unit, and the master unit is An image signal line interface configured to convert an image signal exchanged between the telephone line and the wireless means, the image signal line interface being connected between the telephone line and the wireless means, A voice signal line interface connected between the telephone line and the wireless means, the voice signal interface being adapted to convert a voice signal exchanged between the telephone line and the wireless means; Control signal sending hands Receiving a control signal from the wireless means through the wireless means, and based on the control signal, selects one of the audio signal line interface and the image signal line interface, and selects the selected line interface. It has a selection means for outputting a selection signal representing an interface and a switching means for receiving the selection signal and connecting only the selected one line interface between the telephone line and the wireless means. There is.

[0010]

According to the invention described in claim 1, the control signal transmitted by the control signal transmitting means of the slave unit is received by the selection signal generating means of the master unit, and the selection signal generating means converts the control signal into the control signal. Based on this, one line interface is selected from the plurality of line interfaces, and a selection signal representing the selected line interface is output. Then, the switching means receives the selection signal from the selection means, and connects only the selected one line interface between the telephone line and the wireless means.

That is, according to the first aspect of the present invention, by transmitting the control signal from the slave unit to the master unit, communication is performed with the partner terminal device from a plurality of line interfaces provided in the master unit. It becomes possible to select one line interface having a signal conversion characteristic suitable for the type of transmission signal to be used, and connect this selected line interface between the telephone line and the wireless means. Therefore, the communication error of the transmission signal is suppressed, and high-speed and high-quality signal transmission is possible.

According to the second aspect of the invention, the control signal transmitted by the control signal transmitting means of the slave unit is received by the selection signal generating means of the master unit, and the selection signal generating means is
Based on the control signal, one of the audio signal line interface and the image signal line interface is selected, and a selection signal representing the selected line interface is output. Then, the switching means receives the selection signal from the selection means, and connects only the selected one line interface between the telephone line and the wireless means.

That is, according to the second aspect of the present invention, by transmitting the control signal from the slave unit to the master unit, the transmission signal is an audio signal or an image signal,
It becomes possible to select either the voice signal line interface or the image signal line interface and connect the selected line interface between the telephone line and the wireless means. Therefore, the communication error of the audio signal and the image signal can be suppressed, and particularly, the communication error at the time of copy transmission can be suppressed, and high-speed and high-quality copy transmission can be performed.

[0014]

The present invention will be described in detail below with reference to the embodiments shown in the drawings.

FIG. 1 is a block diagram showing the basic construction of an embodiment of the cordless telephone of the present invention. In this embodiment, a master device 101 and a slave device 102 are used.
The base unit 101 is connected to the telephone line 1 and the other terminal device (not shown) which is also connected to the telephone line 1
The transmission and reception of image signals and audio signals and various control signals performed between the slave unit 102 and the slave unit 102 are performed. On the other hand, the child device 102 is configured to wirelessly exchange signals with the parent device 101, and transmits image signals and audio signals to and from the other terminal device via the parent device 101 and the telephone line 1. Sends and receives signals (communication).

As shown in FIG. 1, the base unit 101 includes a hook switch unit 2, a switching unit 3, a facsimile hybrid 4, a speech network 5, a control signal transmission / reception unit 6, a cordless telephone control unit 7, a reception unit 8 and a transmission unit. The unit 9 and the antenna 10 are provided.

The receiving unit 8 converts the voice signal received from the slave unit 102 via the antenna 10 into the speech network 5.
The image signal received from the child device 102 is given to the facsimile hybrid 4 and the control data received from the child device 102 is given to the control data transmission / reception unit 6.

The facsimile hybrid 4 is a line interface designed so as to be adapted for signal conversion of an image signal, and is an image signal sent from the line 1 to the slave unit 102 and an image sent from the slave unit 102 to the line 1. The signal is converted to 4-line to 2-line. Further, the speech network 5 is a line interface designed to be suitable for converting a voice signal into a signal, and transmits a voice signal from the line 1 to the handset 102 and a voice signal from the handset 102 to the line 1. Convert 4-line to 2-line.

The control signal transmitting / receiving unit 6 secures a channel for wireless communication with the slave unit 102, and transmits / receives a control signal to / from the slave unit 102 via the receiving unit 8 and the transmitting unit 9. .. The cordless telephone control unit 7 as a selection unit selects either the facsimile hybrid 4 or the speech network 5 based on the control signal from the control data transmission / reception unit 6, and a selection indicating the selected result. The signal is output to the switch 3.

Based on the selection signal received from the cordless telephone control unit 7, the switching unit 3 cooperates with the hook switch unit 2 to select either the hybrid 4 or the speech network 5 selected. Telephone line 1
It is designed to connect to.

On the other hand, the slave unit 102 includes a telephone unit 11 and a modem.
(Modulator / demodulator) 12, image processing unit 13, control signal transmitting / receiving unit 14, cordless telephone control unit 15, reading unit 16, printing unit 17, facsimile control unit 18, receiving unit 19, and transmitting unit 2.
0 and the antenna 21.

The receiving unit 19 gives the image signal received from the parent device 101 via the antenna 21 to the image processing unit 13,
The audio signal received from the base unit 101 via the antenna 21 is given to the telephone unit 11, and the base unit 101 is supplied via the antenna 21.
The control signal received from the control signal transmitting / receiving unit 14 is applied.

The transmitting section 20 receives a voice signal, an image signal and a control signal from the telephone section 11, the image processing section 13 and the control signal transmitting / receiving section 14, respectively, and receives these signals from the antenna 21.
To the base unit 101 via the.

The telephone section 11 wirelessly exchanges a voice signal with the speech network 5 of the base unit 101. Further, the image processing unit 13 wirelessly exchanges image signals with the facsimile hybrid 4 of the parent device 101. In addition, the control signal transmission / reception unit 14 is provided in the base unit 10
Control signals are wirelessly exchanged with the control signal transmitting / receiving unit 6 of No. 1. The facsimile control unit 18 is the image processing unit 13.
To control.

The operation of the cordless telephone having the above structure will be described below.

First, in the case of making a telephone call using a normal telephone, an outside line capturing operation is performed on the operation panel of the handset 102, and the cordless telephone control unit 15 of the handset 102 transmits the base unit 101 via the transmitting unit 20. The control signal for telephone call is transmitted to the receiving unit 8 of. Then, the control signal received by the master device 101 side is transmitted to the control signal transmitting / receiving unit 6 of the master device 101.
Via the cordless telephone control unit 7 of the base unit 101. Then, the cordless telephone control unit 7 outputs a control signal to the hook switch unit 2 to cause the hook switch unit 2 to operate.
Turn on. Further, the cordless telephone control unit 7
Selects the speech network 5 and outputs a selection signal representing this selection to the switch 3. Then, the switch 3 receiving the selection signal connects only the speech network 5 to the telephone line 1 side. That is, at this time, only the speech network 5 that has passed the conversion of the voice signal is connected between the receiving unit 8 and the transmitting unit 9 and the telephone line 1.
You can make good phone calls.

Next, during a telephone call, an operation for facsimile transmission / reception is performed on the operation panel of the handset 102, and the facsimile control section 18 of the handset 102 is operated via the control signal transmitting / receiving section 14 and the transmitting section 20. , Base unit 101
A control signal for facsimile transmission / reception is transmitted to the receiving unit 8 of. Then, the control signal received on the base unit 101 side is transmitted to the cordless telephone control unit 7 via the control signal transmitting / receiving unit 6 of the base unit 101. Then, the cordless telephone control unit 7 selects the facsimile hybrid 4 and outputs a selection signal representing the selected facsimile hybrid 4 to the switch 3. Then, the switch 3 connects only the facsimile hybrid 4 to the telephone line 1 side. Therefore, the image signal transmitted to the parent device 101 via the reading unit 16, the image processing unit 13, the modem 12, and the transmitting unit 20 of the child device 102 does not pass through the speech network 5 and is suitable for converting the image signal. After passing through the facsimile hybrid 4, it is transmitted from the telephone line 1 to the other terminal device. That is, at this time, only the facsimile hybrid 4 suitable for converting the image signal is connected between the receiving unit 8 and the transmitting unit 9 and the telephone line 1. Further, the image signal sent from the above-mentioned terminal device on the other party side via the telephone line 1 is wirelessly transmitted from the transmitting unit 9 to the slave unit 102 via the hybrid 4 for facsimile. Then, the image signal received by the receiving unit 19 of the child device 102 is transmitted to the printing unit 17 via the modem 12 and the image processing unit 13, and is subjected to signal processing by the printing unit 17.

As described above, according to the above-described embodiment, when the telephone call is performed, the voice signal is the voice signal.
Since the image signal is converted by the facsimile hybrid 4 during facsimile transmission / reception, it is possible to suppress a communication error during image signal transmission, and to transmit the image signal at high speed and high quality. You can

[0029]

As is apparent from the above description, according to the invention of claim 1, the control signal transmitted by the control signal transmitting means of the slave unit is received by the selection signal generating means of the master unit, and the selection is performed. The signal generating means selects one line interface from the plurality of line interfaces based on the control signal, and outputs a selection signal representing the selected line interface. The switching means receives the selection signal from the selection means,
Only the selected one line interface is connected between the telephone line and the wireless means.

That is, according to the first aspect of the present invention, by transmitting the control signal from the slave unit to the master unit, communication is performed with the partner terminal device from the plurality of line interfaces provided in the master unit. It becomes possible to select one line interface having a signal conversion characteristic suitable for the type of transmission signal to be used, and connect this selected line interface between the telephone line and the wireless means. Therefore, the communication error of the transmission signal is suppressed, and high-speed and high-quality signal transmission is possible.

According to the second aspect of the invention, the control signal transmitted by the control signal transmitting means of the slave unit is received by the selection signal generating means of the master unit, and the selection signal generating means is
Based on the control signal, one of the audio signal line interface and the image signal line interface is selected, and a selection signal representing the selected interface is output. Then, the switching means receives the selection signal from the selection means, and connects only the selected one line interface between the telephone line and the wireless means.

That is, according to the second aspect of the present invention, by transmitting the control signal from the slave unit to the master unit, the transmission signal is either an audio signal or an image signal,
It becomes possible to select either the voice signal line interface or the image signal line interface and connect the selected line interface between the telephone line and the wireless means. Therefore, the communication error of the audio signal and the image signal can be suppressed, and particularly, the communication error at the time of copy transmission can be suppressed, and high-speed and high-quality copy transmission can be performed.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of a cordless telephone of the present invention.

FIG. 2 is a block diagram of a conventional cordless telephone.

[Explanation of symbols]

1 Telephone line 2 Hook switch section 3 Switcher 4 Hybrid for fax 5 Speech network 6,14 Control signal transmission / reception section 7,15 Cordless telephone control section 8,19 Reception section 9,20 Transmission section 10,21 Antenna 11 Telephone section 18 Facsimile Control unit 101 Master unit 102 Slave unit

Claims (2)

[Claims] 1. A cordless telephone in which each of the master unit and the slave unit has a wireless means, the master unit is connected to a telephone line, and the master unit and the slave unit wirelessly exchange signals. The slave unit has a control signal transmitting unit for transmitting a control signal to the master unit via the wireless unit, and the master unit is connected between the telephone line and the wireless unit to connect the telephone unit. A plurality of different line interfaces for converting a signal exchanged between a line and the wireless means, and a control signal from the control signal transmitting means of the slave unit are received via the wireless means and converted into the control signal. Based on the above, one line interface is selected from the plurality of line interfaces, and a selection means for outputting a selection signal representing the selected line interface; Cordless telephone characterized in that it comprises a switching means for connecting only one line interface, which is between the telephone line and the radio unit. 2. The master unit and the slave unit each have a wireless means, the slave unit has a copy transmission means, the master unit is connected to a telephone line, and the master unit and the slave unit are wireless. In the cordless telephone for exchanging signals, the slave unit has a control signal transmitting unit for transmitting a control signal to the master unit via the wireless unit, and the master unit includes the telephone line and the wireless unit. An image signal line interface configured to be suitable for converting an image signal exchanged between the telephone line and the wireless means, and between the telephone line and the wireless means. And a control signal from the control signal transmission means of the slave unit, which is configured to be suitable for converting a voice signal exchanged between the telephone line and the wireless means, and is connected between the telephone line and the wireless means. The above radio Receiving through the stage, selects one of the audio signal line interface and the image signal line interface based on the control signal, and outputs a selection signal representing the selected line interface. A cordless telephone, comprising: a selection unit for selecting and a switching unit for receiving only the selected one line interface between the telephone line and the wireless unit in response to the selection signal.