JPH07123040A - Information transmission system - Google Patents

Abstract

PURPOSE:To distribute information from plural information sources to a designation equipment of a reception destination by sending the information through a communications satellite. CONSTITUTION:A data edit section 9 provides a code designating a distribution destination from a storage section 7 to information from an information source 2 to edit transmission data by adding information such as a transmission time designated by a setting section 8. Then the data are stored in a memory device 11 and multiplexed on a signal used for voice or the like at an independent data area by a modulation section 12 and a modulation section 12 conducts required modulation to the data to modulate the data into a required high frequency signal together with a video signal 1 and a CS station 13 sends the modulated signal to a communications satellite 14. A CS reception demodulation section 15 receives a signal from the communications satellite and data of the demodulated information are given to a storage device 16, in which the data are stored via a control section 19. Then the stored data are read and an identification section 18 compares the designated code provided to the information with data from the memory section 17 to identify an equipment corresponding to the code and the data are distributed to any of designated equipments 21-24 via the control section 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information transmission system, and more particularly to an information transmission system for transmitting information such as documents by a subcarrier signal of a communication satellite (CS) signal.

[0002]

2. Description of the Related Art In a broadcasting satellite signal, independent data can be multiplexed with a subcarrier signal for transmitting voice or the like. When a communication satellite is used for video distribution, the communication satellite can use the same method as the broadcasting satellite. Therefore, if the independent data multiplex area of the communication satellite is used, various information, such as a word processor device (hereinafter , A word processor), a facsimile document, or a small computer device (hereinafter abbreviated as a personal computer) can transmit information, and other information transmission means,
For example, there is a possibility that it can be transmitted at a lower cost than distribution using an integrated digital communication network or a public telephone line network. However, as described above, when there are a plurality of types of information, it is difficult to use the information effectively and efficiently without identifying the type of information.

[0003]

In view of the above, the present invention provides a code for designating a destination of information to each information on the transmitting side, and multiplexes this information in an independent data area such as a voice signal. Then, the subcarrier signal is PSK modulated (phase shift keying)
Then, it is transmitted together with the distributed video by a communication satellite. At the receiving side, the subcarrier signal of the received signal is PSK demodulated to take out the information, and the delivery destination designation code added to each information is decoded and received. It is to provide information that is distributed to a specified device.

[0004]

In order to solve the above-mentioned problems, the present invention solves the above-mentioned problems by providing a plurality of information sources, a storage section for storing codes for designating a delivery destination of each information, and a transmission time or transmission of each information. A setting unit for setting the order and the like, a data organization unit for organizing required transmission data by adding a delivery destination designation code read from the storage unit to each information from the information source based on a signal from the setting unit, and data. A memory device for recording information from the organization unit and a first control unit for controlling the storage unit, the setting unit, the data organization unit and the memory device, and the subcarrier signal is required by the information read from the memory unit. C, which outputs the information obtained by modulating the signal of the main carrier signal modulated by the video signal via the communication satellite and the signal from the above-mentioned transmitter device and demodulated from the subcarrier signal. A reception / demodulation section, an identification section for identifying a delivery destination designation code added to the information from the CS reception / demodulation section, and a second control section for controlling the CS reception / demodulation section and the identification section. It is intended to provide an information transmission system including a receiving side device for distributing information from the CS receiving / demodulating section to a designated device.

[0005]

With the above-mentioned configuration, in the information transmission system according to the present invention, the transmitting side gives a code for designating the distribution destination of each information to each information, and transmits the signal for transmitting the voice or the like. It is multiplexed in the independent data area, the subcarrier is modulated by a required modulation method, and the subcarrier is transmitted together with the main carrier signal modulated by the video signal by the communication satellite. On the receiving side, the signal received from the communication satellite is demodulated, the information in the multiplexed independent data area is taken out, the specified code is identified, and the received information is distributed to the device specified by the code.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an information transmission system according to the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram of essential parts of an embodiment of an information transmission system according to the present invention. In the figure, (a) is a transmitting side and (b) is a receiving side. 1 on the transmitting side (a) is a video signal source. 2 is an information source, 3 is a word processor, 4 is a facsimile, 5 is a personal computer,
6 is a LAN (local area communication network) or the like. A storage unit 7 stores a code designating a delivery destination of each information.
A setting unit 8 sets a transmission time of information or a transmission order when there are a plurality of information. Reference numeral 9 denotes a data organization unit, which assigns a delivery destination designation code read from the storage unit 7 to each information from the information source 2 and organizes the required transmission data based on the signal from the setting unit 8. A control unit 10 controls each unit. A memory device 11 is composed of, for example, a magneto-optical disk or the like, and records transmission data from the data organization unit 9. A modulator 12 performs PSK modulation of a subcarrier signal together with transmission data read from the memory device 11 and a PCM-modulated (pulse code modulated) audio signal, and the main carrier signal is generated by the video signal from the video signal source 1. Is FM-modulated (frequency-modulated), input to the transmitter of the CS station 13, modulated into a required high-frequency signal, and transmitted to the communication satellite 14.

The receiving side (b) 15 is a CS receiving / demodulating section,
It receives a signal from the communication satellite 14, outputs the FM demodulated video signal to the video signal circuit, and outputs the PSK demodulated information. Reference numeral 16 denotes a storage device, which is a CS reception / demodulation unit 15
Record information from. Reference numeral 17 denotes a memory unit, which stores a delivery destination designation code of preset information and a device corresponding to each code. An identification unit 18 identifies the device corresponding to the delivery destination designation code added to the information read from the storage device 16 by the data read from the memory unit 17. A control unit 19 delivers the information read from the storage device to the designated device based on the signal from the identification unit 18. Reference numeral 20 is an information delivery destination device group, 21 is a word processor, 22 is a facsimile, 23 is a personal computer, and 24 is a LAN or the like. Reference numeral 25 denotes a display unit, which displays a required item when the device at the delivery destination cannot input data due to power-off or the like.

Next, the operation of the information transmission system according to the present invention will be described. When transmitting information input via the word processor 3, the facsimile 4, the personal computer 5 or the LAN 6, for example, prior to the transmission, these information are organized into required transmission data by the data organization unit 9 and the data is transmitted by a magneto-optical disk or the like. The data is recorded in the configured memory device 11, and this memory device 11 is brought into the CS station 13 for transmission.

The organization of the transmission data by the data organization unit 9 is carried out by designating a delivery destination corresponding to each information input from the information source 2 via the control unit 10 and read from the storage unit 7 via the control unit 10. A code is added and organized into transmission data. The setting unit 8 sets the transmission time of the information, and the setting unit 8 sets the transmission order when there is a plurality of information.
Set by. For example, as shown in FIG. 2 (a), the packet structure of the transmission data is provided with a code for designating the delivery destination by using a part of 16 bits of the packet prefix area, and by using 190 bits of the following information bit area, information is provided. The error correction information is provided in the 82-bit error correction area, and the transmission data is generated using the required number of packets according to the amount of information. If the information is displayed at the same timing as the image from the image signal source 1,
Designation is performed using the other 16-bit part of the packet prefix area so that the transmission is started by the signal from the video signal source.

The modulator 12 FM-modulates the main carrier signal by the video signal from the video signal source 1 and PSK-modulates the sub carrier signal for transmitting voice and the like by the information from the memory device 11. Then, this modulated signal is transmitted by the CS station 13 to the required high frequency signal toward the modulation system and the communication satellite 14. For example, as shown in FIG. 2B, the signal for transmitting the voice or the like is provided with a control code indicating the voice mode, a voice data area, an independent data area, and an error correction data area, and a memory. Device 11
More information on the area allocated for independent data
Use 480b / s etc. Since this independent data area is expanded and contracted depending on whether the audio is in A mode or B mode, or whether it is high definition broadcasting, etc., it is necessary to respond appropriately according to the usage situation of radio waves. To do.

Receiving the radio wave from the communication satellite 14 (b)
The signal is received by the CS receiver / demodulator 15 of the
The demodulated video signal is input to the video signal processing circuit, the data of the information PSK-demodulated from the subcarrier signal is subjected to required processing based on the error correction information and output, and the storage device 16 is supplied via the control unit 19. Enter and record. After that, the control unit
The information recorded in the storage device 16 is read out via the storage device 16, the designated code in the packet prefix area is taken out, and the identification portion 18
To enter. The identification unit 18 stores the input code in the memory unit.
The delivery destination device corresponding to the designated code is identified by comparing with the data read from 17. Based on the signal from the identification unit 18, the information read from the storage device 16 is delivered to the destination device group.
Deliver to 20 applicable devices via their respective interfaces.

At this time, if the destination device cannot be input due to power-off or the like, the information data in the storage device 16 is stored, and this signal is input to the display unit 25 via the control unit 19 to obtain the undelivered information. Is displayed with the device name added, and distribution is tried at any time until the distribution destination device is switched to be enterable.

[0013]

As described above, according to the information transmission system of the present invention, a code for designating a delivery destination for delivery information input from a plurality of information sources, for example, word processor, facsimile, personal computer or LAN. Is given
There are multiple information sources and multiple distribution destinations, since the signals are multiplexed in the independent data area of the transmission signal such as voice and transmitted by the communication satellite, and the specified code is identified and distributed by the reception destination. Even if it automatically identifies the delivery destination,
Since the received information is not manually divided, there is no risk of confusion such as mistaken delivery destinations. Since this system uses communication satellites for transmission, it is useful when communication satellites are used as means for video distribution.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an embodiment of an information transmission system according to the present invention.

FIG. 2 is an example of data of the information transmission system according to the present invention, in which (a) is a packet configuration and (b) is a data channel format.

[Explanation of symbols]

 B Sending side B Reception side 1 Video signal source 2 Information source 7 Storage section 8 Setting section 9 Data organization section 10 Control section 11 Memory unit 12 Modulating section 13 CS station 14 Communication satellite 15 CS receiving / demodulating section 16 Storage unit 17 Memory section 18 Identification unit 19 Control unit 20 Information distribution destination device group

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Minor Haga Minoru 1116 Suenaga, Takatsu-ku, Kawasaki City, Fujitsu General Ltd.

Claims (5)

[Claims] 1. A plurality of information sources, a storage unit for storing a code or the like for designating a distribution destination of each information, and a distribution destination designation code read from the storage unit is added to each information from the information source as required. A data organization unit for organizing transmission data, a memory device for recording information from the data organization unit, the storage unit,
A data control unit and a first control unit for controlling the memory device, and performs a required modulation of the subcarrier signal based on the information read from the memory device and the like via a communication satellite together with the main carrier signal modulated by the video signal. An information transmission system that is designed to be transmitted. 2. A setting unit for setting the transmission time or transmission order of each information is provided, and the data organization unit reads each information from the information source from the storage unit based on the signal from the setting unit. The information transmission system according to claim 1, wherein a delivery destination designation code is added to organize the required transmission data. 3. A CS receiving / demodulating section for receiving a signal from the communication satellite and outputting information demodulated from a subcarrier signal, and a delivery destination designation code added to the information from the CS receiving / demodulating section. And a second control unit that controls the CS receiving / demodulating unit and the identifying unit, and distributes information from the CS receiving / demodulating unit to a designated device based on a signal from the identifying unit. The information transmission system according to claim 1, wherein the information transmission system comprises the receiving side device. 4. A CS receiving / demodulating unit that receives a signal from the communication satellite and outputs information demodulated from a subcarrier signal, a storage device that temporarily records the information from the CS receiving / demodulating unit, and a storage device. An identification unit that identifies the delivery destination designation code added to the read information and a second control unit that controls the CS reception / demodulation unit, the storage device, and the identification unit, and is based on the signal from the identification unit. The information read from the storage device is delivered to the designated device, and if the delivery destination device cannot be input, the information is stored in the recording device,
The information transmission system according to claim 1, further comprising: a receiving side device that reads out and stores the stored information when input is possible. 5. A CS receiving / demodulating unit that receives a signal from the communication satellite and outputs information demodulated from a subcarrier signal, a storage device that temporarily records information from the CS receiving / demodulating unit, and a storage device. An identification unit for identifying a delivery destination designation code added to the read information, a display unit for displaying information, etc., and a second control unit for controlling the CS reception / demodulation unit, storage device, identification unit and display unit. The information read out from the storage device is distributed to the designated device based on the signal from the identification unit, and when the distribution destination device cannot be input, the information is stored in the recording device, and The information transmission system according to claim 1, wherein the information is displayed on a display unit, and the receiving side device is configured to read out and distribute the stored information when input is possible.