JPH05327974A - Facsimile broadcasting receiver - Google Patents

Abstract

PURPOSE:To transmit that a telephone line is under usage to a call originator by receiving an terminating call once and transmitting busy sound to the telephone line for the terminating call of a telephone system while printing a facsimile broadcasting. CONSTITUTION:When facsimile reception is started while a facsimile 12 is conducting telephone system communication, a received facsimile signal is stored in a buffer memory 5. When the completion of telephone system communication is detected by a DC detecting circuit 15, a switch 11 is changed-over to a b-side and the signal is read from the memory 5, inputted to the facsimile 12 and printed. When the terminating call is detected from the telephone line 9 during the reception and printing of the facsimile, the switch 11 is kept as it is, the DC circuit of the line 9 is closed by a busy sound generating circuit 14 and the busy sound of 400Hz is transmitted to the line 9. At this time, the printing of the facsimile signal is continued till one program or one page ends. Thus, a call originating side recognizes that the other party is under calling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shared type facsimile receiving apparatus for receiving a facsimile broadcast signal multiplexed in a television broadcast and a facsimile communication signal sent through a telephone line. As the facsimile receiving apparatus, an integrated terminal type facsimile receiving apparatus including a printer and an adapter type facsimile receiving apparatus connected to a normal facsimile apparatus can be considered.

[0002]

2. Description of the Related Art Since the 1940s, the telecommunications technology council and others have proposed a facsimile multiplex broadcasting system in which fixed images such as characters, figures, and photographs are transmitted using television broadcasting waves and reproduced and recorded at the receiving side. (The Journal of the Television Society of Japan 1
(February 987 reference), and in February 1989, two methods, analog and digital, were reported to the Minister of Posts and Telecommunications (Telecommunications Technology Council Advisory Advisory No. 15). In January 1991, the Ministry of Posts and Telecommunications Ministerial Ordinance was promulgated and enforced regarding digital methods.

This digital facsimile signal is
A control signal and an error correction code are added to an image signal compressed and encoded by a method similar to that of a G3 facsimile of a wired communication system (telephone system) and transmitted at a speed of 16 kbps. For the broadcasting system, refer to the magazine "Communication Technology 1989.
, May issue ". As described above, the image signal of the digital facsimile transmission is compressed and encoded by the same method (CCITT recommendation T.4) as that of the telephone (wired) facsimile.

Therefore, it is conceivable to use a conventional facsimile machine (FAX) compatible with the G3 standard for printing out the facsimile broadcast. An adapter type facsimile broadcasting receiver for this purpose is disclosed in Japanese Patent Laid-Open No. 3-48564 (H04N1 / 0).
0) etc. FIG. 3 shows a conventional adapter device (1
3).

(1) is a television antenna. (2) is a tuner that selectively receives TV radio waves of a predetermined channel and detects an audio signal. (3) is a demodulation circuit. The demodulation circuit (3) extracts the facsimile signal received by the television antenna (1) and multiplexed with the television broadcast audio signal selected by the tuner (2), and converts it into a digital signal sequence.

(4) is a signal processing circuit. The signal processing circuit (4) detects frame timing from the digital signal sequence, performs error correction, etc., and separates it into a control signal and an image signal. (5) is a buffer memory. The buffer memory (5) is used for accumulating the facsimile code string extracted by the signal processing circuit (4) and matching the communication speed. The buffer memory (5) can also be used to store a signal of a facsimile broadcast received while the FAX (12) is performing wired facsimile communication.

(6) is a voice band modem. The voice band modem (6) sends out a facsimile code string to the G3 FAX (12) connected to print an image of a facsimile broadcast. (7) is a network control circuit that activates the G3 FAX (12). (8) is a CPU that controls the overall operation of the adapter device.

(9) is a telephone line. Reference numeral (10) is an incoming call detection circuit for detecting an incoming signal from the telephone line (9).
Reference numeral (11) is a switch that can be appropriately switched between the telephone line (9) side and the network control circuit (7) side. This switch is CPU (8)
Controlled by. (12) is a conventional normal G3 standard facsimile machine (FAX).

This adapter device (13) operates as follows. The television radio wave received from the antenna (1) is selected by the tuner (2). The digital signal sequence of the facsimile broadcast extracted by the demodulation circuit (3) is input to the signal processing circuit (4) and error correction is performed. CPU
When detecting the program selection signal, (8) switches the switch (11) to the b side, activates the FAX (12) by the network control circuit (7), and starts transmission. The image signal stored in the buffer memory (5) is transmitted to the FAX (12) through the modem (6) and printed.

By the way, in such a shared adapter type facsimile broadcasting receiver (13), of course, the telephone line
The contents of (9) facsimile communication and the contents of facsimile broadcast reception cannot be output at the same time. Therefore, it is conceivable to give priority to telephone-based facsimile communication over reception of facsimile broadcast. Therefore, if an incoming call detection circuit (10) is provided and an incoming call from the telephone line (9) is detected during printing of a facsimile broadcast signal, printing is immediately interrupted and the switch (11) is switched to the a side, (12) is connected to the telephone line (9) to enable telephone type facsimile communication. Received signals of a facsimile broadcast during telephone-type facsimile communication are stored in a buffer memory (5) and, after the telephone-type communication is completed, sent to a FAX (12) for printing. 3-224349).

As described above, in the processing in which the telephone system is prioritized, the facsimile broadcast program being printed is interrupted on the way, and the print result becomes very difficult to see.
There is an adverse effect such as waste of paper. Therefore, as shown in JP-A-2-202262 (H04N1 / 00) and JP-A-2-202263 (H04N1 / 00), priority is given to facsimile broadcast reception over telephone line facsimile communication, and telephone line It is also possible to ignore the incoming call from (9).

[0012]

When the broadcasting system is prioritized and the incoming call of the telephone system is ignored, the calling side (sender or calling side facsimile machine) does not receive a response from the other party,
Is the other party's FAX (12) not connected, or
It becomes impossible to know if something is wrong.

That is, in the mode in which the facsimile broadcast is preferentially printed, even if there is an incoming telephone call during the printing of the facsimile broadcast, the printing is continued. Therefore, it is unknown why the telephone sender does not connect. Is.

[0014]

According to the present invention, while a facsimile broadcast is being printed, when a telephone system receives an incoming call,
Accepts an incoming call and sends a busy tone to the telephone line (9).

[0015]

In the present invention, the busy tone is returned to the incoming call of the telephone system to notify the outgoing call that it is in use.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIG. This example shows an example in which the present invention is used in an adapter type facsimile broadcast receiving apparatus. In FIG. 1, the same parts as those in FIG. 3 are designated by the same reference numerals. (11) is a switch for connecting either the telephone system or the broadcasting system to the FAX (12).

(14) is a busy tone generating circuit. This busy-sound generation circuit (14) controls the CPU (8) after the incoming call is detected, and then closes the DC circuit of the telephone line (9).
Send 00Hz busy tone to the telephone line (9). (15) detects FA by detecting the direct current flowing through the telephone line (9).
Detects whether X (12) is performing telephone communication, and
This is a DC detection circuit for leaving it in PU (8).

This operation will be described. Normally, the switch (1
1) is connected to the a side so that the FAX (12) can communicate via the telephone line (9). When receiving and printing a facsimile broadcast, the switch (11) is switched to the b side and the facsimile code sequence of the facsimile broadcast output from the signal processing circuit (4) is input to the FAX (12).

If reception of a facsimile broadcast is started while the FAX (12) is performing telephone-based communication,
Buffer memory for received facsimile broadcast signals (5)
Remember. Then, after detecting the end of telephone communication by the DC detection circuit (15), the switch (11) is switched to the b side, and the facsimile broadcast signal is read from the buffer memory (5) and input to the FAX (12). And print.

During reception / printing of facsimile broadcast, the switch (11) is connected to the side b. Telephone line during this
When an incoming call from (9) is detected, the switch (11) is left as it is and the DC circuit of the telephone line (9) is closed by the busy tone generation circuit (11) and the busy tone of 400 Hz is output. Send to telephone line (9). At this time, printing of the facsimile broadcast signal continues until one program or page is completed.

As described above, in this embodiment, the calling side recognizes that the other party is busy by sending the busy tone to the telephone line (9). Many fax machines are equipped with an auto redial feature, which means that if the other party is busy,
After a few minutes, the calling operation is automatically performed again. Therefore, after the printing of the facsimile broadcast program is completed and the FAX (12) is released, the call is received again and the telephone system communication can be performed.

In the first embodiment of FIG. 1, an explanation has been given by taking an adapter type receiving device for printing a facsimile broadcast program by using the existing G3 facsimile device (12) as an example. The same applies to the terminal type. FIG. 2 shows a second embodiment of the present invention. In this example, the present invention is applied to an integrated terminal type. In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals.

(5) is a buffer memory. The buffer memory (5) stores the facsimile code string via the CPU (8). (6) is a voice band modem. The voice band modem (6) sends a facsimile signal to the telephone line (9). (7) is a network control circuit (NCU) of the FAX (12).

(8) is a CPU for controlling the overall operation of the apparatus
Is. (21) is coding / compression for compressing / decompressing the image signal
It is a decoding circuit. The encoding / decoding circuit (21)
Forms selective output means for selectively outputting the output of the signal processing circuit (4) and the input signal from the telephone line (9) under the control of the CPU (8). (22) is a printer for printing the received facsimile image.

Reference numeral (23) is a scanner for reading a document to be transmitted through the telephone line (9). When receiving an image signal by telephone-based facsimile communication, the facsimile signal sent from the telephone line (9) is converted to a digital signal by the modem (6), and the compression-encoded signal is received, as in the conventional facsimile device. The decoding circuit (21) restores the original image signal after decompressing it, and then the printer (22) prints it.

Further, when receiving a facsimile broadcast, as in the case of FIG. 1, the facsimile code received by the tuner (2), the demodulation circuit (3) and the signal processing circuit (4) is converted into a decoding circuit ( Extend in 21) and print. Unlike the adapter type of FIG. 1, it is not necessary to match the speed in the buffer memory (5). Also in this example, a buffer memory (5) is prepared, and a signal of a facsimile broadcast received during wired communication is temporarily stored in this buffer memory (5).
After the telephone communication is completed, the data is sequentially read and printed.

When an incoming telephone call occurs during reception / printing of a facsimile broadcast, the incoming call detection circuit (10) detects the incoming call, and then the busy tone generation circuit (15)
After closing the DC circuit of the telephone line (9), send a 400Hz busy tone to the telephone line (9). This allows the calling party to
A few minutes after judging that the other party is busy, call again.

[0028]

According to the present invention, when there is an incoming telephone call during wired communication and printing of facsimile broadcast, a busy tone is emitted to the originating side, and the originating side retries the call after a few minutes. It will be.

[Brief description of drawings]

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

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

FIG. 3 is a diagram showing an example of a conventional facsimile broadcast receiving apparatus.

[Explanation of symbols]

 (4) Signal processing circuit (signal processing means), (8) CPU, (9) telephone line, (10) incoming call detection circuit, (11) switch (selective output means), (15) busy tone generation circuit, ( 21) Encoding / decoding circuit (selection output means).

Claims (1)

[Claims] 1. A signal processing means for receiving and processing a facsimile broadcasting signal of a broadcasting system multiplexed in a television broadcasting wave.
(4), and a selection output means (11, 21) for selectively outputting the output signal of the signal processing means (4) and the input signal from the telephone line (9), in the facsimile broadcast receiving device, A busy tone generation circuit that sends a busy tone to the telephone line (9) when a facsimile broadcast signal is being output by the selective output means (11, 21) in response to the incoming call of the telephone line (9). A facsimile broadcast receiving apparatus comprising (15).