JP2788665B2 - Facsimile receiver - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a facsimile receiver for receiving a facsimile signal transmitted using, for example, a communication satellite, and performing printing based on an image signal extracted from the facsimile signal. Related to the device.

[Related Art] In a communication system for transmitting a video signal and an audio signal using a communication satellite, if the communication is performed by scrambling the video signal and the audio signal, a receiving system including key information of the scramble and a descrambling device is provided. It is possible to normally transmit the video signal and the audio signal only to the communication destination having In such a communication system, information can be simultaneously transmitted from a single transmission side to a plurality of n communication destinations.

FIG. 8 shows the configuration of such a communication system. In the figure, 100 is a transmitting system, 200 is a communication satellite, and 300 is a receiving system.

The video signal SV and the audio signal SA are supplied to the scrambler 101 constituting the transmission system 100, and the respective signals are scrambled based on the control signal SC, and for example, the scramble key is changed. , A communication destination that can be transmitted normally is controlled.

Here, the audio signal SA is converted to PCM. Then, the PCM audio signal is scrambled using, for example, a pseudo random signal (PN signal). The video signal SV is scrambled by, for example, a signal switching method within a scanning line (line rotation) or a scanning line transition method (line permutation).

The video signal and the PC audio signal scrambled by the scrambler 101 are supplied to the modulator 102. In the modulator 102, the PCM audio signal is modulated by, for example, a four-phase DPSK method, and then combined with a video signal, and the combined signal is further FM-modulated.

The FM modulated signal from the modulator 102 is transmitted to a transmitter 103 for a communication satellite.
Is transmitted to the communication satellite 200 after the frequency conversion.

Further, the FM modulated signal from communication satellite 200 is received by CS antenna and CS converter 301 constituting receiving system 300, frequency-converted, and then supplied to CS tuner 302.

The tuner 302 demodulates the FM modulation signal of the selected channel to obtain a video signal and a four-phase DPSK modulation signal. Further, demodulation is performed on the four-phase DPSK modulation signal obtained by FM demodulation, and a bit stream signal is obtained.

The video signal and the bit stream signal from the tuner 302 are supplied to a descrambler 303 to be descrambled.

If the descrambling device 303 has key information for descrambling the video signal and the bit stream signal, the descrambling device 303 performs the descrambling normally, and returns the original video signal SV and the audio signal SA.
Are obtained, and are normally viewed by the monitor 304.

By the way, in recent years, with the demand for sophistication and diversification of information, in addition to video and audio information, type information (facsimile information) for complementing or providing detailed information has been required. ing.

Conventionally, such type information is transmitted by facsimile communication using a telephone line.

For example, as shown in FIG. 8, a facsimile apparatus 104 is provided on the transmitting system 100 side, and a facsimile apparatus 305 is provided on the receiving system 300 side as an individual communication destination.
And these facsimile machines 104 and 305 are
It is connected with a telephone line 400.

When transmitting type information, print information is transmitted from the facsimile apparatus 104 to the facsimile apparatus 305 of the communication destination via the telephone line 400. And the facsimile machine 30
From 5, a print screen (recording paper) 306 on which type information is recorded is output.

By the way, in the facsimile communication by the telephone line 400, although it is a broadcast communication, it is not strictly speaking that the communication is performed at the same time, but a time lag occurs. This time lag increases as the number of communication destinations increases.

In addition, as the number of communication destinations increases, the time required for communication increases, and the time required for communication increases, thereby increasing the cost required for communication. In addition, video signals and audio signals and type information are associated with each other. However, since the video signal and the audio signal are transmitted using a communication satellite, and the type information is transmitted separately by facsimile communication, transmission management becomes complicated.

Therefore, it has been considered that type information is transmitted using a communication satellite. In this case, the communication system is configured as shown in FIG. 9, for example.

In the figure, reference numeral 105 denotes a facsimile signal generator. Type information FI is supplied to the signal generator 105,
A facsimile signal SI is formed based on the type information FI. This facsimile signal SI is transmitted to the scrambler 101
Are supplied in synchronization with the clock CLK.

FIG. 10 shows a frame configuration of the facsimile signal SI.

The facsimile signal SI is composed of a data packet section PAC composed of 272 bits (34 bytes) of digital data, and a 16-byte (2 bytes) added at the beginning of the data packet section PAC.
(Byte) mode control unit MC and the packet format. One frame is composed of 32 packets,
A frame synchronization signal FC of 16 bits (2 bytes) is added to the head of the frame. In other words, one frame is 9232
It is composed of bits (1154 bytes).

In this case, whether or not the packet is the facsimile signal SI is determined by the mode control unit MC.

The packets of the facsimile signal SI include a control signal packet and an image signal packet. FIGS. 11A and 11B show the packet structures of the control signal and the image signal, respectively. In the figure, DAT is an information data part, PFX is a prefix for identifying the information data part DAT, CRC is an error detection code, and CHC is an error correction check code.

The prefix PFX determines whether the information data section DAT corresponds to a program selection signal, a page end signal, a program end signal, an image signal, a blank signal, or the like.

FIG. 12 shows the structure of a program selection signal. In this case, the information data part DAT is composed of 160 bits, DB1 to DB20 are set in byte units, and codes of control items such as program numbers and page numbers are assigned in byte units.

The facsimile signal SI is sequentially transmitted in frame units. In each frame, after transmitting 16 bits of the frame synchronization signal FC, a signal of 32 packets is transmitted by 4-bit interleaving.

That is, in order to protect data against a burst error, as shown by an arrow A in FIG. 10, the lower 4 bits of the first byte are sequentially transmitted from packet 1 to packet 32, and then the upper 4 bits of the first byte. Four bits are transmitted sequentially from packet 1 to packet 32, then the lower four bits of the second byte are transmitted sequentially from packet 1 to packet 32, and so on. The packets are sequentially transmitted up to 32.

It should be noted that the 16-bit frame synchronization signal FC does not vary with time, always has the same code pattern, and is not protected by the additional bit for error correction.

The facsimile signal SI from the signal generator 105 is inserted into a predetermined area of the audio data frame structure, and scrambled together with the PCM audio signal based on the control signal SC.

In the transmission system 100, the other configuration is the same as that of the example of FIG. 8, and the facsimile signal SI is modulated by the modulator 102 together with the PCM audio signal in the 4-phase DPSK system, and this is combined with the video signal and FM-modulated. FM modulated signal from transmitter 103
Transmitted to the communication satellite 200.

In the receiving system 300, similarly to the example in FIG. 8, the video signal and the bit stream signal from the CS tuner 302 are supplied to a descrambling device 303 and descrambled.

If the descrambling device 303 has key information for descrambling the video signal and the bit stream signal, the descrambling device 303 performs descrambling normally, and returns the original video signal SV, audio signal SA and A facsimile signal SI is obtained.

The video signal SV and the audio signal SA from the descrambling device 303 are supplied to the monitor 304, where the image and the audio are reproduced and viewed.

Reference numeral 307 denotes a print information recording device.
In 07, the facsimile signal S from the descrambler 303
I and clock C for sampling this signal SI
LK is supplied. This recording device 307 is configured, for example, as shown in FIG.

In the figure, a facsimile signal SI and a clock CLK from a descrambling device 303 are supplied to a data fetch unit 1. In this data acquisition unit 1, a facsimile signal
The frame synchronization signal FC is detected by the SI, the frame synchronization signal is reproduced, and data is fetched based on the reproduced frame synchronization signal to perform a deinterleave process.

The data that has been deinterleaved and output from the data acquisition unit 1 is supplied to the signal processing unit 2. The signal processing unit 2 performs error correction processing and processing such as discrimination between a control signal including a program number, a page number, and the like and an image signal.
Then, a necessary program and page image signals are supplied from the signal processing unit 2 to the image receiving unit 3 and printing is performed.

 FIG. 14 is a diagram showing the transmission order of the data of one program.

Here, one frame synchronization signal is a signal including only the frame synchronization signal FC for establishing frame synchronization. That is, the data packet part PAC in each frame
Are all "0" signals. The program selection signal is a signal for transmitting a program number, a page number, and the like, and is configured by a control signal packet in which the information data portion DAT includes the program selection signal (see FIG. 12). The image signal is configured by a packet of the image signal in which the information signal DAT includes the image signal. The page end signal is a signal indicating the end of the image signal for one page, and the information data portion DA
It is configured by a control signal packet in which T includes a page end signal. The program end signal is a signal indicating the end of the image signal of the last page of the program, and is composed of a control signal packet including a program end signal in the information data portion DAT.

In the signal processing unit 2 of FIG. 13, a reservation memory (not shown)
Next, the program number and page number of a plurality of programs to be printed are stored in advance by the user.

At the time of actual reception, the program number and the page number included in the program selection signal of the deinterleaved facsimile signal SI from the data acquisition unit 1 are stored in the program number and the page number stored in the reservation memory in advance. When the two match, an image signal is extracted, and the image signal is supplied to the image receiving unit 3 to start printing. When the page end signal or the program end signal is received, printing of the image receiving unit 3 is stopped, and the recording paper is cut.

[Problems to be Solved by the Invention] According to the method of printing only the program number and page number stored in advance in the reservation memory, a specific communication destination is premised on the assumption that all transmitted programs are printed. In the case of transmission limited to the program number, it is necessary to store in advance the program numbers and page numbers of all programs in the reservation memory,
It was very troublesome for users.

In addition, the program number and page number stored in the reservation memory can be confirmed only once or several at a time on, for example, a liquid crystal display device attached to the facsimile receiving apparatus main body, and all the reservation contents can be confirmed at a time. Can be.

Thus, the present invention provides a facsimile receiving apparatus which eliminates the above-mentioned inconveniences and improves the usability of the user.

Means for Solving the Problems The present invention receives a facsimile signal in which a program selection signal having program information including at least a program number and an image signal are sequentially transmitted correspondingly, and an image signal extracted from the facsimile signal A facsimile receiving apparatus that performs printing based on a program, discriminates a reservation memory for storing program information of the program to be printed, and program information of the received facsimile signal, and extracts an image signal of the program to be stamped. The microprocessor includes a microprocessor and an external input device connected to the microprocessor to perform an operation input.

The microprocessor determines the program selection signal and the image signal of the received facsimile signal, and extracts the program information from the program selection signal determined by the determination means and compares the extracted program information with the program information in the reservation memory. Comparing means for storing program information extracted from a program selection signal in the reservation memory according to a comparison result by the comparing means, the program information being stored in the reservation memory; Reservation canceling means for setting a cancel flag in accordance with the program information stored in the reservation memory in response to a reservation cancel operation by the device;
Depending on the operation of canceling reservation cancellation by the external input device,
In accordance with the result of comparison by the reservation canceling canceling means for canceling the cancellation flag set by the booking canceling means, and the comparison result by the comparing means, if the program is a program to be printed, an image signal is extracted and output, and if the program should not be stamped, For example, it has signal extracting means for eliminating image signals and converting means for converting the program information in the reserved memory into a character pattern signal in response to an operation of printing the program information in the reserved memory by the external input device.

The signal extracting means stores the program to be printed in the case where the program information extracted from the program selection signal is not stored in the reservation memory and the program information extracted from the program selection signal in the reservation memory. A program that is not to be printed, and a program that is not to be printed is a program when the program information extracted from the selection signal is stored in the reservation memory and the cancellation flag is set. Is what you do.

[Operation] In the above configuration, the program information of the received program that is not stored in the reservation memory by the registration means, that is, the program information of the newly received program is automatically stored in the reservation memory. Therefore, at the time of next reception, the program does not become a new program, and a new received program can always be detected. Then, a new program can be printed by the signal sampling means.

The reservation canceling means and the reservation canceling canceling means allow the user to change the program to be printed from the contents of the reservation memory by a simple operation of setting a cancel flag.

Further, by performing a reserved printing operation with an external input device, the contents of the reserved memory are converted into a character pattern signal,
The reserved program list is printed. Therefore, it is possible to confirm the reservation contents at a time when changing the program to be printed.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a signal processing unit 2 in this example.
13 shows the configuration of the main part (see FIG. 13).

In FIG. 1, reference numeral 11 denotes a data storage memory. The data storage memory 11 stores the facsimile signal SI for one frame which has been captured and deinterleaved by the data capturing unit 1.

Reference numeral 12 denotes a reservation memory. The reservation memory 12 stores a program number and a page number of a program to be printed.

13 is a microprocessor (MPU). In the microprocessor 13, an image signal of a program to be supplied to the image receiving section 3 (see FIG. 13) and printed is extracted.

As modes for extracting image signals, a mode for extracting all image signals of a received program (hereinafter, referred to as a “first mode”) and a mode for extracting only image signals of a reserved program (hereinafter, “second mode”). Mode) is set. Switching between these modes is performed according to the operation of the external input device 14 connected to the microprocessor 13.

In the first mode, the program number and page number are extracted from the program selection signal of the facsimile signal SI stored in the data storage memory 11 and compared with the contents stored in the reservation memory 12, and the program number and page number of the program received for the first time are extracted. The number is stored in the reservation memory 12. In addition, a process of extracting image signals of all received programs is performed.

In the second mode, the program number and the page number are extracted from the program selection signal of the facsimile signal SI stored in the data storage memory 11 and compared with the contents of the reservation memory,
The program number and the page number of the program received for the first time are stored in the reservation memory 12, and the image signal of the program is extracted. If the program has not been received for the first time, it is determined whether the reservation has been canceled. If the reservation has been canceled, the image signal of the received program is excluded. Otherwise, the image signal of the received program is sampled. Perform processing.

Further, in the microprocessor 13, processes such as reservation cancellation and reservation cancellation cancellation are performed in accordance with the program number and the page number stored in the reservation memory 12. These processes are performed in accordance with the operation of the external input device 14.

Further, the microprocessor 13 performs a process of converting the contents of the reservation memory 12 into a character pattern signal.
This process is performed in response to a reservation printing operation of the external input device 14. Note that the character pattern signal is supplied to the image receiving unit 3, and the reserved program list is printed.

The microprocessor 13 performs image signal sampling processing, reservation cancellation and reservation cancellation release processing, character pattern signal conversion processing, and the like, as described above.
The following means are constituted (see FIG. 2).

That is, a discriminating means 131 for discriminating a program selection signal and an image signal of the received facsimile signal SI, and a program number and a page number are extracted from the program selection signal discriminated by the discriminating means 131 and compared with the contents of the reservation memory 12. A means for extracting the image signal if the program is to be printed, and a signal extracting means for removing the image signal if the program is not to be printed, according to the comparison result in the comparing means. In accordance with the result, the registration means 134 stores the program number and page number of the program received for the first time in the reservation memory 12, and the program number and page number stored in the reservation memory 12 in response to the operation of canceling the reservation by the external input device 14. A reservation canceling means 135 for setting a canceling flag in accordance with the page number; Reservation canceling means 136 for canceling the canceled cancel flag, mode switching means 137 for switching between the first mode and the second mode and controlling the operation of the signal sampling means 133, and a reservation printing operation by the external input device 14. Conversion means for converting the contents of the reservation memory 12 into a character pattern signal in accordance with
138.

Next, the operation of the microprocessor 13 will be described with reference to FIGS.
Description will be made based on the drawings.

FIG. 3 is a flowchart of the program receiving process in the first mode, and FIG. 4 is a flowchart of the program receiving process in the second mode.

At the time of startup, the mode is the first mode, and the processing shifts to the processing in FIG.

In the figure, at step n1, the program selection signal and the image signal are determined by the prefix PFX of each packet constituting the facsimile signal SI stored in the data storage memory 11, and the program selection and the page program are determined from the program selection signal. Extraction and comparison with the contents of the reservation memory 12 are performed.

Next, when it is determined in step n2 that the program is the first received program, that is, when it is determined that the program number and page number are not stored in the reservation memory 12, the process proceeds to step n3, and the program is stored in the reservation memory 12. The number and the page number are stored, and the routine goes to Step n4.

In step n4, an image signal for one screen of the received program is extracted and captured. This captured image signal is
It is sent to the image receiving unit 3 and printed out.

When it is determined in step n2 that the program has already been received, that is, when it is determined that the program number and the page number are stored in the reservation memory 12, the process proceeds to step n4 and the received program is determined. The image signal for one screen is extracted and taken in. The captured image signal is sent to the image receiving unit 3 and printed out.

If the mode is switched from the first mode to the second mode by the mode switching means 137 in response to the operation of the external input device 14, the processing shifts to the processing in FIG.

In FIG. 4, at step n1, the program selection signal and the image signal are determined by the prefix PFX of each packet constituting the facsimile signal SI stored in the data storage memory 11, and the program number and page number are determined from the program selection signal. The number is extracted and compared with the contents of the reservation memory 12.

Next, when it is determined in step n2 that the program is the first received program, that is, when it is determined that the program number and page number are not stored in the reservation memory 12, the process proceeds to step n3, and the program is stored in the reservation memory 12. The number and the page number are stored, and the routine goes to Step n5.

In step n5, an image signal for one screen of the received program is extracted and imported. This captured image signal is
It is sent to the image receiving unit 3 and printed out.

When it is determined in step n2 that the program has already been received, that is, when it is determined that the program number and the page number are stored in the reservation memory 12, the process proceeds to step n4.

If it is determined in step n4 that the reservation has not been canceled, that is, if it is determined that the cancellation flag has not been set in correspondence with the program number and page number stored in the reservation memory 12, the process proceeds to step n5. An image signal for one screen of the received program is extracted and captured. The captured image signal is sent to the image receiving unit 3 and printed out.

If it is determined in step n4 that the reservation has been canceled, that is, if it is determined that the cancellation flag has been set corresponding to the program number and page number stored in the reservation memory 12, the process proceeds to step n6. The image signal for one screen of the received program is excluded.

As described above, in the first mode, all the image signals of the received program are extracted by the microprocessor 13, sent to the image receiving unit 3, and printed out. Therefore, by setting the first mode by the mode switching means 137, all the received programs can be printed out without the user previously storing the program number and page number of the program to be printed in the reservation memory 12. it can.

In the second mode, the microprocessor
In step 13, the image signal of the program whose program number and page number are stored in the reservation memory 12 and whose reservation has not been canceled is extracted, sent to the image receiving section 3, and printed out. Therefore, the second mode is set by the mode switching means 137, and the reservation canceling means 135 and the reservation canceling canceling means 1
By arbitrarily setting the program whose reservation is to be canceled by 36, only the program desired by the user can be printed out. In the second mode, if the received program is the first one, the program is always printed out. As a result, the content of the program can be confirmed.

FIG. 6 shows an example of the contents of the reservation memory 12, in which a reservation cancellation flag is stored together with the program number and the page number. For example, the program with the program number 011 and the page number 01 whose reservation cancellation flag is “1” has been canceled. Although the figure shows program numbers and page numbers in decimal numbers for the sake of simplicity, the actual reservation memory
The program numbers and page numbers stored in 12 are expressed in binary numbers.

FIG. 5 is a flowchart of a printing process of a reserved program list.

When a reservation printing operation is performed by the external input device 14, the processing shifts to the processing of FIG.

In the figure, in step n1, it is determined whether or not reception printing is being performed, and if it is determined that reception printing is being performed, the process ends.

If it is determined in step n1 that the reception printing is not being performed, the process proceeds to step n2.

In step n2, the program number and the page number are rearranged in ascending order, and the process proceeds to step n3.

In step n3, the rearranged program numbers and page numbers are converted into character pattern signals, and the process proceeds to step n4.

In step n4, the program number and page number converted into the character pattern signal are sent to the image receiving unit 3, and a list of reserved programs is printed out.

FIG. 7 shows an example of a reserved program list printed out.

Note that the reservation cancellation flag may be displayed in the reservation program list in addition to the program number and the page number.

In the above-described embodiment, both the program number and the page number are stored in the reservation memory 12, but the present invention is also applicable to the case where only the program number is stored and the reservation is performed only by the program number. Can be applied. In this case, only the program number is displayed in the reserved program list.

[Effects of the Invention] As described above, according to the present invention, program information of a received program that is not stored in the reservation memory by the registration means, that is, program information of a newly received program is automatically stored in the reservation memory. Therefore, at the time of next reception, the program does not become a new program, and a new received program can always be detected. Since the image signal of a new received program can be extracted and printed by the signal extracting means, it is not necessary to store a new program that has not been reserved in the reservation memory, and the operation of the user can be simplified. .

Further, the program whose reservation is to be canceled by the reservation canceling means and the reservation canceling canceling means can be arbitrarily set only by setting the cancel flag, so that only the program desired by the user is printed without changing the contents of the reservation memory. Can be operated easily.

Further, by performing a reservation printing operation by the external input device, a list of program information of the reserved programs stored in the reservation memory is printed, so that the user can easily confirm all the reserved programs. Can be.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a functional block diagram of a microprocessor, and FIGS.
FIG. 5 is a flowchart of a program receiving process, FIG. 5 is a flowchart of a reserved program list printing process, FIG. 6 is a diagram showing an example of contents of a reserved memory, FIG. 7 is a diagram showing an example of a reserved program list, 8 and 9 are diagrams showing a configuration of a communication system using a communication satellite, FIG. 10 is a diagram showing a frame configuration of a facsimile signal, FIG. 11 is a diagram showing a packet configuration, and FIG. 12 is a program selection signal. FIG. 13 is a diagram showing the configuration of a print information recording apparatus, and FIG. 14 is a diagram showing the data transmission order of one program. DESCRIPTION OF SYMBOLS 1 ... Data acquisition part 2 ... Signal processing part 3 ... Image receiving part 11 ... Data storage memory 12 ... Reserved memory 13 ... Microprocessor 14 ... External input device

Claims (1)

(57) [Claims] 1. A facsimile receiver for receiving a facsimile signal in which a program selection signal having program information including at least a program number and an image signal are sequentially transmitted in correspondence with each other, and performing printing based on the image signal extracted from the facsimile signal. In the apparatus, a reservation memory for storing program information of the program to be printed, a microprocessor for determining program information of the received facsimile signal, and extracting an image signal of the program to be printed, An external input device for connecting and performing an operation input, wherein the microprocessor is configured to determine a program selection signal and an image signal of the received facsimile signal and a program based on the program selection signal determined by the determination means. Comparing means for extracting information and comparing the program information in the reservation memory; Registering means for storing the program information in the reservation memory when the program information extracted from the program selection signal is not stored in the reservation memory in accordance with the comparison result by the comparing means; In response to the operation of, the reservation cancellation means for setting a cancellation flag corresponding to the program information stored in the reservation memory, in response to the operation of canceling the reservation cancellation by the external input device,
A program canceling means for canceling a cancel flag set by the program canceling means; and a program which, if it is a program to be printed, extracts and outputs an image signal if it is a program to be printed and does not print a program according to the comparison result of the comparing means. Signal extracting means for excluding an image signal, and converting means for converting the program information in the reserved memory into a character pattern signal in response to an operation of printing the program information in the reserved memory by the external input device, The signal extracting means includes a program to be printed, a program in the case where the program information extracted from the program selection signal is not stored in the reservation memory, and a program information extracted from the program selection signal in the reservation memory. The program information that has not been printed and which is not to be printed is extracted from the selection signal. Facsimile receiving apparatus, characterized in that the program If erected is and revocation flags are stored in directory.