JP3001478B2 - Facsimile machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile apparatus, and more particularly to a facsimile apparatus which accommodates two lines and uses PB from both lines.
The present invention relates to a facsimile apparatus capable of detecting a signal.

[0002]

2. Description of the Related Art Conventionally, a facsimile apparatus of this type detects a PB signal by transmitting a dual tone (PB signal) from an external telephone as shown in Japanese Unexamined Patent Publication No. 3-101360. Or
It is used to notify the communication status.

Further, as disclosed in Japanese Patent Application Laid-Open No. 5-48817, when a facsimile and an external device are connected to one line, a PB signal from the line is detected and a connection destination is automatically selected. It is used for the purpose.

[0004]

In the above-mentioned conventional facsimile apparatus, the first problem is that, in a facsimile apparatus capable of accommodating two lines, PB signals of both lines are monitored by a PB selector in PB detection at the time of transfer reception. Therefore, when detecting the PB tone, the detection of the PB signal fails due to the switching interval of the selector. The reason is P
This is because the B detector has several tens of ms to detect the PB signal, and if the selector is switched within several tens of ms, the PB signal detection will fail.

A second problem is that the PB signal is erroneously detected due to noise at the time of switching the selector. The reason is,
This is because the PB detector cannot correctly detect the PB signal due to noise.

An object of the present invention is to improve the reliability of a PB signal in detecting a PB signal in a facsimile apparatus capable of accommodating two lines.

[0007]

SUMMARY OF THE INVENTION A facsimile apparatus according to the present invention comprises a telephone set connected to an external telephone connected to a plurality of lines.
A synthesizing circuit for synthesizing and outputting the B signal, a PB detector for identifying the PB signal from the synthesizing circuit, an interface unit for outputting a reception number transferred by the user for each line, and a number already registered. A number registration unit for storing the reception number in a memory when the reception number is different; and a transfer reception control unit for causing a communication control unit to perform a facsimile reception operation when a PB signal from the PB detector matches the reception number in the memory. And characterized in that:

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a first embodiment of the present invention.

[0009] The external telephones 1 and 2 are branched and connected to lines 3 and 4 accommodated in the apparatus, respectively, to perform incoming call transfer or remote operation of the apparatus by a PB signal.

A synthesizing circuit 5 synthesizes and outputs PB signal amplifiers A1 and A2 from the external telephones 1 and 2.
The PB detector 6 outputs a transfer number identifying the PB signal from the combining circuit 5.

The number registration unit 7 checks whether or not the transfer reception number for transfer input from the interface unit 8 by the operator in advance is a registered number. Remember.

The transfer / reception control unit 10 includes a PB detector 6
When the transfer number notified from the server and the transfer reception number registered in the memory 9 coincide with each other, the communication controller 11 instructs the line selector 12 to connect to the line 3 or the line 4, and at the same time, the communication controller 11
Is instructed to perform a facsimile reception or transmission operation.

FIG. 2 is a block diagram of a second embodiment of the present invention. The external telephones 1 and 2 are respectively branched and connected to the lines 3 and 4 accommodated in the apparatus, and perform the transfer of a call or the remote control of transmission and reception of the apparatus by a PB signal.

The synthesizing circuit 5a includes external telephones 1 and 2
Is output via the gated amplifiers B1 and B2. The PB detector 6a outputs a transfer number identifying the PB signal from the combining circuit 5a.

The number registration unit 7 checks whether or not the transfer reception number for transfer input from the interface unit 8 by the operator in advance is a registered number. Remember.

The transfer / reception control unit 10a includes a PB detector 6
If the transfer number notified from the server and the transfer reception number registered in the memory 9 match, the communication control unit 11 is instructed to perform facsimile transmission or transmission operation, and at the same time, the line selector is switched to the line 3 or 4 to which the PB signal is transmitted. 12a is connected. At the same time, when the PB signal is input to the amplifier B1 of the synthesizing circuit 5a, the operation of the amplifier B2 is stopped for a predetermined time, and when the PB signal is input to the amplifier B2, the amplifier B2 is stopped.
Operation 1 is stopped for a predetermined time.

In this manner, the PB from the external telephone
In a facsimile capable of accommodating two lines equipped with a transfer reception function that shifts to a facsimile reception operation by detecting a signal, a line 3, an external telephone 1, a line 4, and an external telephone 2 are connected. A synthesizing circuit for synthesizing a PB signal input from the external telephone 2, a PB detector 6 for detecting the PB signal, an interface unit 8 for a user to register a transfer reception number for each line, and a memory 9 for registration. A number registration unit 7 for checking whether there is a conflict with the transfer reception number of the other registered line, and if there is no conflict, a number registration unit 7 for registering the transfer reception number in the memory 9 and a PB detector 6
A transfer reception control unit 10 that compares a PB signal notified from the server with a transfer reception number registered in the memory 9 to check whether they match, and a communication that performs facsimile reception when the transfer reception number matches. Since the control unit 11 is provided, the PB signal input from the external telephone passes not through the selector but through the synthesizing circuit. Can be avoided. In addition, the exclusive control of transfer reception number registration can prevent the same transfer reception number from being used on both lines.

[0018]

As described above, according to the present invention, when a PB signal is detected by monitoring a PB signal of both lines by a PB selector in a PB detection at the time of transfer reception in a facsimile apparatus capable of accommodating two lines, PB detection failure due to the selector switching interval can be avoided. The reason is that the PB detector is
This is because the selector switching does not occur within the time required to detect the signal.

Also, PB due to noise at the time of selector switching
False detection can be avoided. The reason is that noise is not generated by switching the PB selector by using the combining circuit instead of the PB selector.

[Brief description of the drawings]

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

FIG. 2 is a block diagram of a second embodiment of the present invention.

[Explanation of symbols]

 1, 2 external telephone 3, 4 line 5, 5a synthesis circuit 6 PB detector 7 number registration unit 8 interface unit 9 memory 10, 10a transfer reception control unit 11 communication control unit 12, 12a line selector

Claims (3)

(57) [Claims] 1. A means for accommodating a plurality of lines and simultaneously transmitting and receiving a facsimile, a means for connecting to each of said lines and performing a call transfer or a remote operation by a PB signal of an external telephone, A facsimile apparatus comprising: means for synthesizing the PB signal from the line, and means for identifying the synthesized PB signal and connecting the incoming line to a communication control unit. 2. A means for checking whether the numbers corresponding to the PB signals from the plurality of lines do not conflict with each other and registering them in a memory in advance, and determining whether a PB signal from the external telephone is registered in the memory. 2. The facsimile apparatus according to claim 1, further comprising: means for causing said communication control unit to receive a facsimile when the numbers match. 3. A synthesizing circuit for synthesizing and outputting a PB signal from an external telephone connected to each of a plurality of lines, a PB detector for identifying a PB signal from the synthesizing circuit, and a user transferring each of the lines. An interface unit for outputting a reception number to be received, a number registration unit for storing the reception number in a memory when the reception number is different from the already registered number, and a PB signal from the PB detector matching the reception number in the memory. A facsimile apparatus having a transfer / reception control unit for causing the communication control unit to perform a facsimile reception operation at the time of (1).