JP3329866B2 - Digital data transmission / reception device using satellite communication - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transmission / reception terminal device for transmitting and receiving digitized service data, particularly in various information services utilizing satellite communication. Further, the present invention relates to a configuration for calculating a usage fee according to individual information and charging efficiently.

[0002]

2. Description of the Related Art Wired communication of voice, game data, and image signals digitized using a telephone line or an optical fiber in the background of high-speed and high-quality communication has been known. Further, also in satellite communication represented by wireless communication, techniques for digitizing and transmitting signals such as voice and game data are widely known.

[0003] As a method of calculating and collecting the information usage fee in satellite communication, a signal is scrambled at the time of transmission, and a demultiplexer for canceling the signal is separately provided on the receiving side, and this demultiplexer is installed. A system that collects a fixed monthly fee in the event of such a situation has become widespread.

[0004]

As described above, when information communication is performed by using wired communication such as a telephone line, in particular, when the amount of information when digitized, such as video, becomes huge, the connection ( The communication side is not suitable for large-capacity data communication on the receiving side, for example, a charging fee becomes high depending on time or a data amount exceeds an allowable range of the receiving apparatus. Further, when performing video communication by conventional satellite communication, the transmitting side separates video information into an audio signal and an image signal, digitizes the audio signal, converts the image signal into a video signal and converts it into an analog signal. Therefore, the receiving side requires a processing unit for simultaneously processing and synthesizing the digital signal and the analog signal separated at the time of reception, so that a large amount of expense is required for the receiving apparatus. Further, as a method of calculating and collecting the usage fee, it is assumed that the receiving side pays the reception fee voluntarily, and the efficiency of the fee collection is very poor.

An object of the present invention is to provide a digital data transmitting / receiving apparatus which converts all satellite signals during transmission and reception into digital signals and processes and executes the signals in accordance with various data signals. Is what you do. It is another object of the present invention to provide an apparatus for efficiently calculating and collecting the usage fee of the executed information among the received information.

[0006]

To achieve the above object, according to the solution to ## and the main unit of the transmission side comprising a host computer and a transmitter storing various data signals as digital sign-column binary, depending on the various types of data The main unit transmits the digitized data signal as a satellite signal by the FM system from the main unit,
A means for providing a digital signal processing unit for demodulating the received satellite signal into a digital signal in the receiving device and a control CPU for executing the digital signal for each data is used.

[0007] Further, as a usage fee charging method, identification data corresponding to the type is written in a signal frame of various data digitized on the transmission side, and the identification data is data for calculating the usage fee. There are two types, one for charging for each data unit and the other for charging based on usage time, and means for selectively performing calculation for charging in accordance with executed data among received data is used. .

[0008]

The main device and the receiving device communicate with each other by wireless communication represented by satellite communication, and transmit and receive karaoke data, game data, video data, and the like. The various data stored in the main device is digitized in advance, and is transmitted as a satellite signal by the conventional FM method at the time of transmission. After receiving the satellite signal, the receiving device decodes the digital signal into a digital signal in a digital signal processing unit, and processes the digital signal for each data. The digital signal processed for each type of data is executed by the control CPU in accordance with its content.

[0009] Further, the digital data receiving apparatus first determines whether the identification data written in the data frame is a charge for each data unit or a charge for each time unit, and charges according to the identification data on which the execution processing has been performed. Is to select.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a block diagram for transmitting radio waves from a main unit to a receiving terminal device using a communication satellite, wherein 1 is a communication satellite, 2 is a main device, and 3 is a receiving terminal device. As shown in FIG. 2, the main device 2 includes a transmission computer 4, a transmission database 5, and a transmitter 6 as main components. The transmission database 5 holds digital data in which identification data is written for each information. The transmitter 6 emits a radio wave from the antenna 7 to the communication satellite based on the digitized database. A large number of digital data are stored in the transmission database 5, and this is cyclically repeated for each packet.
Note that the type of data is not limited to a game, but may be a video, and other binary digital data is technically the same. In addition, it is free to prepare a plurality of channels for each information or to incorporate all information regardless of the type in one channel. Since the present invention is characterized by transmitting and receiving digitized information, a conventional method may be used for a transmitting and receiving method.

Next, the internal configuration of the digital data receiving apparatus will be described with reference to FIG. In the figure, 8 is a receiving antenna, 9 is a tuner for receiving a satellite signal, and is a device for receiving a signal transmitted from the main device 2. It is assumed that the data to be transmitted can be digitized such as video, karaoke, and games. Reference numeral 10 denotes a digital data processing unit such as a buffer memory, which decodes a satellite signal transmitted from the tuner 9 into a valid digital signal, processes a data sequence used for communication such as a header and a footer, and processes necessary information. Is a block for performing processing such as taking out only the data string of. Reference numeral 11 denotes a control CPU for controlling the entire receiving device. Reference numeral 12 denotes a signal processing circuit in which signal processing circuits corresponding to information types, such as a digital video signal processing unit 12a, a digital karaoke signal processing unit 12b, and a digital game signal processing unit 12c, are provided in parallel. The output of each processing circuit is connected to the output terminal 13, and if it is a video terminal, a display can be connected, and if it is a game terminal, a desired game can be performed simply by connecting to a computer game machine. . In addition, 1
Reference numeral 4 denotes an operation panel for selecting desired information by key operation based on a list of information displayed on the display panel 15 or the like.

Next, a configuration for charging an information usage fee will be described. In FIG. 1, reference numeral 16 denotes a usage status storage unit which counts and stores the usage status in the signal processing circuit 12 for each circuit. Then, using the accumulated result, the total usage fee for the period is appropriately calculated. Here, in the signal frame of each digital data, identification data corresponding to various information data is written as billing information. This will be described with reference to FIG. 4. There is digital data containing information of A to D in one channel.
A is audio data, B is game data, C is video data,
D is karaoke data. The video data C is also digitized image data. Inside the data is the data body 17a, header 17b and footer 17c
In the header 17b, identification data as billing information is written together with control information. Further, the identification data is data that can identify two types, that is, charging based on information or charging based on time. For example, for information having a relatively small data amount, such as game data, it is easy and indispensable for the receiving side to read all of the data and execute the processing. Add identification data. On the other hand, for information with a large data amount, such as video, it is inefficient to read and execute all of the data, so that it is a data sequence that can be automatically interrupted when execution is interrupted, and charging is also performed in chronological order. The corresponding identification data is added. The described identification data is determined by the digital data processing unit, and among the received information, only the identification data of the information executed and processed by the control CPU 11 is stored in the usage status storage 16 for each type. Once the usage fee is calculated based on the transmission-side fee conversion data, once the usage fee data is uploaded to the transmission side using a telephone line or the like and billed at regular intervals, or the IC card held by the receiving side The collection method does not matter, for example, a prepaid system is used.

[0013]

According to the present invention, various types of information digitized as described above are transmitted and received. Therefore, the transmitting side (provider) can easily transmit and manage digital data as a digital data even on a medium having a large amount of information including video information and the like, which leads to higher speed and higher quality of communication. In addition, the receiving side (user) can process and execute the received data at high speed, and the application range of the received data is expanded.

In addition, the identification data for each information is written in the transmission signal, and at the same time, the use status storage is provided in the receiving device, and only the identification data executed during the reception is stored. An effective billing system was achieved, such as charging and paying for fees.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a communication mode using a communication satellite.

FIG. 2 is a block diagram of a transmission device.

FIG. 3 is a block diagram of a receiving device.

FIG. 4 is a schematic diagram showing a data structure transmitted and received;

[Description of sign]

 REFERENCE SIGNS LIST 1 communication satellite 2 transmission device 3 reception terminal device 4 transmission computer 5 transmission database 6 transmitter 7 antenna 8 reception antenna 9 tuner 10 digital data processing unit 11 control CPU 12 signal processing circuit 12 a digital video signal processing unit 12 b digital karaoke signal Processing unit 12c Digital game signal processing unit 13 Output terminal 14 Operation panel 15 Display panel 16 Usage status storage 17a Data body 17b Header 17c Footer

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-4-175025 (JP, A) JP-A-4-363924 (JP, A) 1992 IEICE Spring Conference B-230, March 1992 15 Takayuki Hamasaki, “Pay-to-TV System and Key Management System”, IEICE Technical Report, IEICE, September 19, 1991, Vol. 91, No. 225, No. 49 -56, ISEC91-28 Tadashi Isobe, "Development of Satellite Data Broadcasting and ISDB", NHK STRL Newsletter, Japan Broadcasting Research Institute, Japan Broadcasting Corporation, May 1, 1992, No. 28, No. 6-10 Page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04L 12/14 H04B 7/15

Claims (1)

(57) [Claims] 1. A consists of a main unit of the transmission side comprising a host computer and a transmitter storing various data signals as digital sign-column binary, a receiving apparatus that processes executed in accordance with the various data, the main A digital signal processor for transmitting the digitized data signal from the apparatus as a satellite signal by the FM method, demodulating the satellite signal received in the receiving apparatus into a digital signal, and executing the digital signal for each data A digital data transmitting / receiving apparatus provided with a control CPU for processing, wherein a digital
The signal frame of various types of data
Write another data and calculate the usage fee based on the above identification data
Data for data transfer.
There are two types of billing, time of use,
Out of charge for selective billing according to the executed data
Digital data using satellite communication that performs calculations
Transmitter / receiver .