JPH05130309A - Facsimile broadcast receiver - Google Patents

Abstract

PURPOSE:To effectively transmit a reserved and registered program by checking whether other reserved and registered programs are received at a reception buffer or not when the transmission of the image data is complete. CONSTITUTION:The facsimile data are sampled out of the broadcast radio waves received through an antenna 11, and these radio waves are transferred to a received data buffer part 13 and stored there. When the data are read out, the part 13 also attains a converting function between the data receiving and transmitting speeds of a telephone facsimile transmission/reception equipment 24. A control part 14 controls each component part of a facsimile multiple broadcast adaptor and also decides the reserved program data to the part 13 to control the breaking procedure. That is, it is checked whether other reserved and registered programs are received at the part 13 or not when the transmission of the image data on a certain program is complete. If not, the breaking procedure is carried out. In such a constitution, a buffer memory can be effectively used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facsimile broadcast receiving apparatus, which receives a radio wave in which facsimile image information is multiplexed, converts the image information extracted from this radio wave into an input signal of a telephone facsimile, and prints it on the telephone facsimile. The present invention relates to a facsimile broadcast receiving device.

[0002]

2. Description of the Related Art There is a service for transmitting video information and audio information by using radio waves from a satellite or the ground. In addition to this, there is a broadcast facsimile service that complements the video information and audio information, or multiplexes image (facsimile) information independent of these, and sends the service.

As an example of the broadcast facsimile, a case of facsimile multiplex broadcasting in which facsimile information is multiplexed with radio waves of terrestrial television broadcasting to provide a service will be described below. This transmission method was reported in February 1989 by the Telecommunications Technology Council as "technical conditions for facsimile broadcasting."

FIG. 3 shows an example of a facsimile multiplex broadcasting system. In FIG. 3, FIG. 3A shows the transmitting side, and FIGS. 3B, 3C and 3D show the receiving side.
On the transmitting side 100, 101 is a video signal transmitting device for transmitting a video signal Sv, 102 is an audio signal transmitting device for transmitting an audio signal Sa, and 103 is a facsimile signal transmitting device for transmitting facsimile data Sf. is there.

Video signals Sv, audio signals Sa, and facsimile data Sf sent from the sending devices 101 to 103.
Are supplied to the multiplexer 104 to be multiplexed. The signal multiplexed by the multiplexer 104 is modulated by the modulator 105 and then transmitted via the transmission antenna 106.

On the receiving side 200, FIG. 3A shows a receiver for exclusive use of facsimile multiplex broadcasting. A transmission signal from the transmission side is supplied to the receiving device via the antenna 211. From the received signal, the facsimile data extracting unit 212 extracts only the multiplexed facsimile data, the data processing unit 213 processes the facsimile data, and sends the image data to the print processing unit 214.
Here, the print control process is performed and the print output is performed on the recording paper 215.

As described above, in a broadcast facsimile receiving apparatus using radio waves, a signal is input by an antenna. Therefore, CCITT Recommendation T. 4 and T.S. A facsimile (hereinafter referred to as a telephone facsimile) signal standardized by 30, and using a generally widespread telephone line cannot be received by the facsimile multiplex broadcasting receiver 210.

An example of an integrated facsimile multiplex broadcasting receiver 220 shown in FIG. 3C is one that can also receive telephone facsimiles. This device 220 is provided with an antenna 221 and two input terminals from a telephone line 228, and switches the signal from each of them to print out one of the image data on a recording paper 215. When the antenna 221 is input, the switch 226 is connected to the a side, and the antenna 221
Facsimile data extraction unit 22 from the signal received by
Only the facsimile data multiplexed in 2 is extracted, the data processing unit 223 performs the data processing of the facsimile data, the image data is sent to the print processing unit 224, and the print control process is performed there to print out on the recording paper 215. ..

In the case of the telephone line 228 input, the switch 226 is connected to the b side, and the signal from the telephone line 228 is processed by the telephone facsimile signal processing unit 227 for the telephone facsimile signal processing and the image data is printed out on the recording paper 215. To do. Further, it goes without saying that the switch 226 can be connected to the side b to read the image information of the original and output the facsimile signal to the telephone line.

Further, in the case of the receiving apparatus of the type described above, when a new facsimile multiplex broadcast is to be received, a facsimile transmission / reception apparatus using a telephone line (hereinafter referred to as a telephone facsimile transmission / reception apparatus) has already been widely spread. However, it is necessary to prepare a similar device for facsimile multiplex broadcasting, which is a problem in terms of installation location.

On the other hand, a device capable of utilizing a telephone facsimile is a facsimile multiplex broadcast receiving adapter 230 shown in FIG. 3 (d). Since the telephone facsimile transmission / reception device 240 is effectively used for printing output, there is no need to have a printing mechanism with a large volume of parts, and the size can be reduced. This type of device 230 includes an antenna 231 and a telephone line 236.
From the line connection terminal by switching the signal from each of them.

In the case of input from the telephone line 236, the switch 235 is connected to the side b, and the input signal is directly output to the telephone facsimile transmission / reception device 240, where it is processed and recorded / printed according to the processing of the telephone facsimile. .. In the case of input from the antenna 231, the switching device 2
35 is connected to the side a, and the facsimile data extracting unit 232 extracts only the multiplexed facsimile data from the signal received by the antenna 231, and the data processing unit 2
33 performs data processing of the facsimile data, converts the image data into a telephone facsimile signal by the signal conversion unit 234 and outputs the telephone facsimile signal to the telephone facsimile transmission / reception device 240, where the recording paper 24 is processed according to the telephone facsimile processing.
1 is recorded and printed.

Further, it goes without saying that the switch 235 can be connected to the side b so that the telephone facsimile transmission / reception device 240 can read the image information of the original and output the facsimile signal to the telephone line.

Now, the transmission system of the facsimile multiplex broadcasting described in the report “Technical conditions for facsimile broadcasting” of the Telecommunications Council will be described. Facsimile data constitutes one frame with 32 packets as shown in FIG. 5, and is transmitted at a data transmission rate of 16 kbps. One packet is 288 bits, of which the mode control (MC) code that identifies the 16-bit packet mode is 1
The error correction check code is a prefix (PFX) for identifying 4-bit facsimile data, 176-bit data, and 82-bit (272, 180) shortened difference set cyclic code.

In the MC, "0000" is used for facsimile multiplex broadcasting.
The code “101001101111” (transmission order) is assigned. The code assignment of PFX is as shown in FIG. 6, and the part other than the image signal is commonly called a control signal. Information such as a program number is assigned to the data of the program selection signal of the control signal. The sequence in which these facsimile multiplex broadcast signals are transmitted is as shown in FIG. When the transmission of the facsimile multiplex data is started, as shown in FIG. 5, a 6-frame network signal or a blank signal for establishing synchronization of the receiver is sent first, and then information for assisting the receiver in selecting a program. The program selection signal of 6 frames including the program number, the image signal which is the image data for one page, the page end signal when there is the next page, and the program end signal when the last page are transmitted in this order. To be done.

The compression coding method of the image data in the image signal includes a one-dimensional coding method (MH) and a two-dimensional coding method (M).
R) and is recommended by CCITT T.R. 4 and T.S. This is the same method as the image data compression encoding method of a facsimile which is transmitted using a telephone line standardized by 30.

Further, the telephone facsimile transmitting / receiving apparatus 240 connected to the facsimile multiplex broadcasting receiving adapter starts the receiving operation after detecting the ringer signal generated by the exchange of the ordinary telephone line. Then CCITT Recommendation T. Thirty
According to the facsimile transmission procedure shown in, the functions such as image data transmission speed and minimum image data transmission time per line (minimum scanning line time) are adjusted with the sending side, and the image data is received along with it and the recording paper is received. To print out.

Receiving of such facsimile multiplex broadcasting is normally performed by waiting for reservation (when all incoming programs are received, it is considered that all programs are reserved and registered). Therefore, the facsimile multiplex broadcasting reception adapter 230 reserves and registers the program number of the program to be received in advance, and starts sending the image data to the telephone facsimile transmission / reception device 240 with the same program selection signal as the reserved program number.

Further, as described above, since the signal transmission unit of the facsimile multiplex broadcasting is processed in program units,
The transmission was ended by the program end signal of the corresponding program. That is, the facsimile multiplex broadcasting adapter 230 connects the telephone facsimile transmission / reception device 240 with the same program selection signal as the reserved program number, and the telephone facsimile transmission / reception device 2
A ringer signal is generated to 40 to activate it, and then the function adjustment is performed according to the functional condition sent from the telephone facsimile transmission / reception device 240, and then one page of image data is sent out.

Next, if the transmitted image data is a page in the middle of the program, a multi-page procedure is performed with the telephone facsimile transmission / reception device 240, and if it is the last page of the program, an end procedure is performed and a line with the telephone facsimile transmission / reception device 240. Had been disconnected.

[0021]

Here, the facsimile multiplex broadcast receiving adapter 230 generates the ringer signal as described above and sends the telephone facsimile sending / receiving apparatus 24 before sending the image data to the telephone facsimile sending / receiving apparatus 240.
0, and then the telephone fax machine 24
It is necessary to adjust the function according to the function condition sent from 0. Depending on the connected facsimile, the procedure until such image data transmission takes about 20 seconds depending on the connected facsimile.

If the reservation-registered programs arrive sparsely, even if the image is transmitted after the telephone facsimile transmission / reception device 240 is activated on a program-by-program basis, the time required for the transmission preparation procedure does not matter. There wasn't. However, when the reserved-registered programs successively arrive, the transmission of the image data is delayed for about 20 seconds due to the period for preparing the transmission of the first program, so that the transmission to the telephone facsimile transmission / reception device 240 is delayed. The signal of the next program has already arrived at the reception buffer at the time of completion. Even when sending this data,
Since there is time to perform the pre-sending procedure, there is a problem that received data is accumulated in the receiving buffer more and more and a large capacity memory is required.

The present invention solves the problems of the conventional apparatus and provides a facsimile broadcast receiving apparatus capable of efficiently transmitting a program registered for reservation.

[0024]

In order to achieve the above object, the present invention determines whether or not another reserved program is received in the reception buffer when the transmission of the image data of one program is completed. A check process is provided, and the disconnection procedure is performed only when no other signal is received to disconnect the line.

[0025]

Even when the reserved-registered programs arrive consecutively, the time required for preparation for transmitting image data in program units can be saved, so that the receiving buffer memory having a predetermined capacity can be effectively used.

[0026]

1 shows a facsimile multiplex broadcast receiving adapter according to an embodiment of the present invention. In the figure, antenna 1
In the broadcast radio wave received in 1, the MC code is checked in the facsimile data extracting unit 12, and the facsimile data is extracted by detecting the code assigned to the facsimile multiplex broadcast. The extracted facsimile data is transferred to the reception data buffer unit 13,
Remembered. The reception data buffer unit 13 is composed of a semiconductor memory, an IC card, etc., and also has a function of converting a reception speed and a transmission speed between the telephone facsimile transmission / reception device 24 in reading data.

The control unit 14 including an MPU or the like not only controls each component of the facsimile multiplex broadcast adapter, but also executes judgment of reserved program data with a reception data buffer, which will be described later, and performs a disconnection procedure. Control. The adapter of this embodiment is provided with a program number input means 15 such as a keyboard for inputting the program number of the facsimile multiplex broadcast to be received, and the input information including the information for reservation is given to the control section 14. Be done.

Since it is necessary to satisfy a predetermined transmission system as a facsimile signal, the minimum bit number latch unit for one line which sets the minimum number of bits required for the data amount of one line of image data by the information from the control unit 14 16 are provided. The received facsimile image data is the control unit 14
EOL detection / fill bit insertion unit 17 input via
According to the clock from the modem unit 18
The image data is output to the image data. At this time, the data amount of each line of the image data is checked and the number of bits is 1
When the value is smaller than the value set in the minimum bit number latch unit 16 of the line, the fill bit (0) is inserted and output until the bit number becomes the same.

The modem unit 18 is controlled by the control unit 14, supplies a clock to the EOL detection / fill bit insertion unit 17 to receive image data, and receives CCITT recommendation T.264. 4 and T.S. Data modulation / demodulation of a facsimile signal using a telephone line according to 30 is performed. The power supply / ringer generation unit 19 controlled by the control unit 14 performs power supply so as to create the same state as the telephone line when transmitting a signal to the line connection terminal of the connected telephone facsimile transmission / reception device 24, or the telephone facsimile transmission / reception device. A ringer signal is generated to trigger 24.

The adapter device of this embodiment is further provided with a switcher 20 for connecting and disconnecting the signal system of the modem section 18, and a switch for switching the connection with the telephone facsimile 24 to either facsimile multiplex broadcasting or telephone line. An incoming call detection unit 22 is provided which detects whether or not the telephone facsimile transmission / reception device 24 is receiving an incoming call based on the loop current of the device 21 and the line.

Next, in the embodiment having the above structure,
The telephone facsimile device 24 has an image data transmission speed of 9
The operation when performing transmission in the G3 transmission procedure when the minimum scanning time is 10 mS / line at 600 bps will be described.

The processing of the control unit 14 will be described along the processing flow shown in FIG. The process starts when the power is turned on, and in step 61, the line switching device 20 is turned off and the switching device 21 is connected to the b side for initial setting to enter a standby state. In this state, the telephone facsimile machine 24 can receive from the telephone line 23 and make a call to the telephone line 23. Further, here, the program number of the facsimile multiplex broadcast to be received from the program number input means 15 such as a keyboard is reserved and registered.

In step 62, the received data buffer unit 13 extracted by the facsimile data extracting unit 12
Among the facsimile data stored in, the program selection signal is checked to determine whether or not there is the same program number as the reservation registered. If not, the data is discarded and step 62 is repeated. If there is, the process proceeds to step 63.

In step 63, it is judged whether or not the telephone / facsimile transmitting / receiving device 24 is communicating through the telephone line 23. If the incoming call detecting portion 22 detects the loop current, the incoming call is in progress, so the step 63 is repeated to find the loop current. If it is not detected, it means that the incoming call is not made, so that the process proceeds to step 64. In step 64, the switch 21 is connected to the a side. In step 65, the power feeding / ringer generating section 19 is caused to generate a ringer signal.

In step 66, the telephone / facsimile transmitter / receiver 24 detects the ringer signal to determine whether or not the incoming state has been entered. If the loop current is not detected in the incoming call detecting section 22, the incoming call is not detected. Returning to step 65, if the loop current is detected, the incoming call is detected, so the process proceeds to step 67. In step 67, the switch 20 is turned on. In step 68, the modem unit 1
8 is set to 300 bps and CCITT recommendation T.8. According to the transmission procedure of 30, the function is adjusted with the telephone facsimile transmission / reception device 24, and the image data transmission speed R (9600 in this example).
bps) and the minimum scan line time S (10 mS / l in this example)
ine). In step 69, the minimum bit number L of one line is calculated from the obtained R and S by the following equation: L = R × S = 9600 × 10/1000 = 96 bits / line, and the minimum bit number latch unit of one line is calculated. Set to 16.

In step 70, the image data transmission rate R (960 in this example) obtained by adjusting the function of the modem section 18 is used.
0 bps). Then, the modem unit 18 outputs a clock so that the image data can be taken in from the EOL detection / fill bit insertion unit 17. In step 71, the image data of the reserved program in the reception data buffer unit 13 is sent to the EOL detection / fill bit insertion unit 17. Then, the EOL detection / fill bit insertion unit 17
Is EO from the image data sent as shown in FIG.
L is detected, and the number of bits B between the head of the first EOL and the head of the next EOL is counted, and if B is the set value L of the minimum bit number latch unit 16 of one line (96 in this example)
If it is smaller, a fill bit (0) of (LB) bits is inserted after the image data as shown in FIG. 7B, and if B ≧ L, it is output to the modem unit 18 as it is in synchronization with the clock. Then, the modem unit 18 modulates the input image data and outputs it to the telephone facsimile transmission / reception device 24.

In step 72, it is judged whether or not all the image data of the corresponding page of the reserved program in the reception data buffer section 13 has been sent to the EOL detection / fill bit insertion section 17, and if it has not been sent out. If it has been sent to step 71, the process proceeds to step 73. In step 73, the control signal after the image signal of the corresponding page of the reserved program in the received data buffer unit 13 is checked to determine whether there is a next page. If the control signal is the program end signal, the next page is determined. No, so step 74
If the control signal is the page end signal, there is the next page, so the routine proceeds to step 75.

At step 74, the reserved program information set in the control section 14 is checked by the input means 15, it is judged whether or not the next reserved program has already been received in the reception data buffer section 13, and the program is received. If the program selection signal is the reserved program number, the line disconnection procedure is not performed and the process proceeds to step 75. If not, the process proceeds to step 76 to disconnect the line.

In step 75, the modem section 18 is set to 300
After setting to bps, the multi-page processing procedure is performed with the telephone / facsimile transmitting / receiving apparatus 24, and the process proceeds to step 70. Step 7
In 6, the modem unit 18 is set to 300 bps, the disconnection processing procedure is executed in cooperation with the telephone / facsimile transmitting / receiving apparatus 24, the image transmission is ended, the process proceeds to step 61, and the reception waiting state is resumed.

In this way, the facsimile multiplex broadcast signal is printed and output to the telephone facsimile transmission / reception device through the facsimile multiplex broadcast adapter.

[0041]

According to the present invention, there is provided a process for checking whether or not another reserved program is received in the reception buffer when the transmission of the image data of one program is completed.
By performing the disconnection procedure only when other programs are not received, even if the programs registered for reservation arrive continuously,
Since the time required for the image data pre-transmission procedure performed for each program can be saved, the effect that the reception buffer memory having a fixed capacity can be effectively used can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram of an adapter device showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining the operation of the embodiment.

FIG. 3 is a system diagram of a facsimile multiplex broadcasting system.

FIG. 4 is a frame configuration diagram of a facsimile multiplex broadcast signal.

FIG. 5 is a time-series configuration diagram of a facsimile multiplex broadcast signal.

FIG. 6 is a diagram showing PFX code assignment of a facsimile signal.

FIG. 7 is a diagram showing a correction relationship between image data and the minimum number of bits in one line in the embodiment.

[Explanation of symbols]

 12 Facsimile Data Extraction Unit 13 Received Data Buffer Unit 14 Control Unit 16 Minimum Latch Bit Number for One Line 17 EOL Detection / Fill Bit Insertion Unit 20, 21 Switching Unit 23 Telephone Line 24 Telephone Facsimile Transmission / Reception Device

Claims (1)

[Claims] 1. A facsimile broadcast receiving apparatus for extracting facsimile data from a received facsimile multiplex broadcast, converting the facsimile data into a telephone facsimile signal and supplying the same to a telephone facsimile transmitting / receiving apparatus, which holds facsimile data extracted from received radio waves. A data buffer section, an input means for making a reservation input of selection information of a facsimile multiplex broadcast to be received, and the reservation information set by the input means are stored, and the received data buffer section stores facsimile broadcast data corresponding to the reservation information. A multi-destination facsimile receiving adapter device comprising: a control unit for forming a signal for controlling connection of a line by judging whether it has arrived.