JPH11249984A - Data distribution system and data distribution method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the configurational simplicity of the entire system, to reduce costs and to make a data storage hard disk small by receiving the data broadcasting of ground waves/satellite waves by a server PC and distributing it to each client PC. SOLUTION: In this data distribution system and this data distributing method which receive data broadcasting from ground waves and satellite waves, the system comprises a server PC 6 that receives the data broadcasting, a storage medium connected to the PC 6 and plural client PCs 10 to 13 which constitute a network together with the PC 6 and transmit and receive data of the data broadcasting and the PCs 10 to 13 activate receiving software and receive the data of the data broadcasting through the network.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data distribution system and a data distribution method for a data broadcast receiving terminal, and more particularly to a data distribution system capable of acquiring the latest data via a common server PC when receiving a data broadcast. The present invention relates to a system and a data distribution method.

[0002]

2. Description of the Related Art In a conventional terrestrial / satellite wave data broadcast receiving system, as shown in FIG. 6, a receiving board is required for all receiving terminals. That is, in this conventional system, a UHF wave modulated by a data signal is output from a broadcasting station, emitted from a parabolic antenna 2, and a broadcasting satellite 1 receives the UHF wave and relays or converts the frequency to perform a specific direction of the earth. To broadcast the UHF wave of the data signal. The UHF wave of the data signal is received by the parabolic antenna 4 and received by the terminals 21 to 23 to demodulate the data signal. Also,
As for the terrestrial wave, a VHF wave or a UHF wave modulated with a data signal from a broadcasting station is broadcast from a terrestrial antenna 3,
The VHF wave or the UHF wave is received by a Yagi antenna or the like, and received by each of the terminals 21 to 23 to be demodulated into a data signal. At this time, the satellite wave and the terrestrial wave received by the parabolic antenna 4 and the Yagi antenna and the like are transmitted through the antenna cable 8 to each terminal 21 to 2.
The terminals are connected to one another via a network cable 9 as a LAN or WAN. In this way, the terminals 21 to 23 that individually receive data broadcasts,
A receiving board for receiving each data broadcast is connected to each of the receiving terminals 21 to 21.
In preparation for 23, each of the receiving terminals 21 to 23 selects a desired channel and receives desired data. The conventional system having such a configuration is provided with each receiving terminal 2
A receiving board is set in each of the terminals 1 to 23, and an antenna and an antenna line corresponding to terrestrial / satellite wave broadcasting are connected to the terminals 21 to 23, respectively, thereby enabling reception of data broadcasting.

[0003]

The prior art has the following problems.

First, the first problem is that each receiving terminal needs a receiving board and an antenna line even in a system on the same network. This is because it is designed on the assumption that each client, which is an individual receiver, receives a data broadcast.

[0005] The second problem is that the cost is very high. This is because receiving boards and antenna lines are required for all receiving terminals that receive data broadcasting. Further, the third problem is that each client needs to have the same data.
This is because each individual client receives a data broadcast and saves the data on its own hard disk.

An object of the present invention is to receive a terrestrial / satellite wave data broadcast from a server PC and distribute the data of the data broadcast to each client PC in real time.
By distributing past data, it is possible to simplify the configuration of the entire system, reduce cost, and activate a data storage hard disk.

[0007]

SUMMARY OF THE INVENTION The present invention provides a configuration in which data can be distributed from one data broadcast receiving terminal (server PC) to a terminal (client PC) on a network.

The present invention relates to a data distribution system for receiving data broadcasts from terrestrial waves and satellite waves, a server PC for receiving the data broadcast, a recording medium connected to the server PC, and a network connected to the server PC. And a plurality of client PCs for transmitting and receiving the data broadcast data, wherein the client PC activates receiving software and receives the data broadcast data via the network.

The present invention also provides a server PC for receiving a data broadcast, a recording medium connected to the server PC, and a plurality of client PCs which form a network with the server PC and transmit / receive data to / from the server PC. The client PC activates receiving software, detects the presence of the server PC, requests the server PC to start data distribution,
Displaying the latest data including a plurality of contents stored in the recording medium of the server PC on a display;
Desired data is obtained from the latest data, sequentially displayed on the display, and the receiving software is terminated.

Further, the present invention provides a server PC for receiving a data broadcast, a recording medium connected to the server PC,
In a data distribution method for a network including a server PC and a plurality of client PCs that transmit and receive data to and from the server PC by combining a network including a public line, the client PC activates receiving software, and executes the reception software via the public line. Detecting the presence of the server PC, requesting the server PC to start data distribution,
Displaying the latest data or a plurality of previous data including a plurality of contents stored in the recording medium on a display, and downloading desired data from the latest data or the previous data.

The present invention will be described more specifically with reference to the drawings. FIG. 1 shows an arrangement in which a server PC 6 (receiving board and server version data broadcast receiving software is installed) is installed on a network 9 and data broadcast is distributed to client PCs 10 to 13 (client version data broadcast receiving software is installed). ing. And the server P
C6 distributes the transmitted data only to the specific PCs 10 to 12 (data broadcast receiving clients). That is, the data broadcast is received by the server, and is distributed only to the client PCs 10 to 12 in which the data broadcast receiving software (client version) is installed.

In other words, this distribution system corresponds to a CATV system for distributing video information. The CATV system has a general broadcast channel and a pay broadcast channel. An example of connecting to a telephone line using a cable has just begun in the general market, and differs from the concept of a client PC and a server PC and an example of transmitting and receiving data between each other.

[0013] In this manner, it is possible to view data broadcasting even in a terminal on which a receiving board / antenna line on the network is not set.

[0014]

Embodiments of the present invention will be described in detail with reference to the drawings.

[First Embodiment] (Configuration of the present embodiment) The configuration of the first embodiment will be described with reference to FIG. The data distribution system of the data broadcast receiving terminal according to the present embodiment is configured such that the server PC 6 receives a data broadcast and distributes the data broadcast to the client PCs 10 to 13, and includes the server PC 6 and the client PCs 10 to 13 which receive the data distribution.

First, data broadcasting is performed on a carrier frequency from a broadcasting station, through a parabolic antenna 1 and a geostationary satellite or a rotating satellite for relay or frequency conversion as a satellite wave, and through a terrestrial high-band antenna 3 as a terrestrial wave. Demodulation processing is performed by the server PC 6 via the antenna line 8 from the terrestrial wave antenna 5 / satellite wave antenna 4 for reception, and LA
N and other networks in real time,
It is displayed on the display on the server PC 6 and the server PC 6
Are stored in a specific directory in the form of a tree on the hard disk 7 connected to the. The hard disk 7 as a recording medium includes not only a magnetic disk but also a DR.
Any recording medium may be used, including semiconductor memories such as AM and SDRAM, optical disks and magneto-optical disks, optical cards and magnetic cards, and magnetic tapes.

When the contents of the received data are complete (when the server PC 6 displays new information), the server PC 6 performs data distribution to the client PCs 10 to 13 in real time, for example, in HTML format.
The client PCs 10 to 13 display information sequentially updated on the receiving software on a display. At this time, the client PC can trace related data from the displayed data, for example, like a Web page on the Internet. That is, the client PC can view and obtain the data broadcast as if it were directly receiving the data broadcast on its own personal computer.

The previously displayed information is stored in the server P
Since the information is stored in the hard disk 7 of C6, the client PCs 10 to 13 referring to the information can individually access the server PC 6 and obtain the information.

(Operation of the Present Embodiment) Next, FIGS.
The overall operation of the present embodiment will be described in detail with reference to flowcharts describing operations of the server PC 6 and the client PCs 10 to 13.

First, referring to FIG. 2, a server PC
The flowchart on the sixth side will be described. The server PC 6 always receives and obtains the data broadcast from the antennas 4 and 5 (S1).
0), the received data is analyzed (S11), and the server PC
6 stores the information in its own hard disk 7 (S12),
Distribute the data to the registered client (S1
3).

In FIG. 2, client PCs 10 to 10
13 (S21), the client P
If a request to start data distribution is accepted from C10 to C13 (S20), the client PC that has requested the start is
Are registered as the client PCs 10 to 13 for data distribution (S22), and the client PC is notified that the registration has been successful and the processing has been completed (S23).

Then, the reception of one content is completed,
When the data is displayed on the server PC itself, the data is distributed to the registered client via the network (S1).
3).

Next, in FIG. 2, when there is an access to the end request from the client PCs 10 to 13 (S30, S31), the client PCs 10 to 13 having the end request are deleted from the registration (S32) and deleted. Is notified to the client PCs 10 to 13 (S33).

Then, in FIG. 2 again, when the reception of another content is completed and the content is displayed on the server PC itself, the data is distributed to the registered client via the network. This is repeated.

Next, referring to FIG.
The flowchart on the C10-13 side will be described. Data on the display displayed by the client PCs 10 to 13 is stored in the server PC 6.

First, when each of the client PCs 10 to 13 starts the data broadcast receiving software (S40), the server PC
It is determined whether or not the server PC 6 exists (S41).
Is determined not to exist, the process ends as an error occurrence such as receiving software or network connection (S47).
If it is determined that the data is present, the server PC 6 is requested to start data distribution (S42), and the latest data stored in the cache or the hard disk of the server PC 6 that is updated hourly and time is displayed (S43). The displayed data is sequentially displayed (S44). At that time, the server PC6
The latest information (the information displayed at that time by the data from the server PC 6) is displayed. In step S43, a list of information stored in the server PC 6 is displayed, for example, in a selectable menu format (S50).
The required data is selected from the information list (S51), the server PC 6 is accessed to acquire the data, and displayed on the display (S52).

Then, when the server PC 6 obtains the next information, the new information is distributed one after another via the network 9 and is displayed sequentially (S44).

Further, the information stored in the server PC can be grasped by the client PC based on a list of stored information, and the data obtained by the server PC 6 and the data obtained by the client PCs 10 to 13 can be made the same. .

Then, the client PCs 10 to 13
When the user wants to display certain information, the server PC 6 accesses the server PC 6 via a network to acquire and display the information.

It should be noted that the server PC may be configured to distribute the data to the client PC by a push technique. Push technology is a technology for automatically sending information from a server PC to a client PC without operating the client PC. When the server PC updates information or adds new information, the client PC sends the information to the client PC. A mechanism to understand the update and addition, for example, changing the color of the icon, displaying a message box and transmitting the message. Also, server P
The information provided by C is called a channel, and a channel is a concept of specifying information in the same way as a URL (Uniform Resource Locator) of WWW. It is not necessary to describe a protocol or directory like a URL. It is effective as a channel.

[Second Embodiment] Next, a second embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 4, this embodiment includes a server PC 6 for receiving a data broadcast, a network 9 to which the server PC 6 belongs, a dial-up connection router 20 installed on the network 9, a public line, 30 and a client PC 32 connected to the mobile phone 31 or PHS via a PHS or a mobile phone 31 enabling a dial-up connection using wireless.

First, the data broadcast is stored in the hard disk 7 of the server PC 6 from the terrestrial / satellite wave antennas 4 and 5 via the antenna line 8.

When the client PC 32 makes a dial-up connection through a public line, the server PC 32
Get the latest information from 6.

Further, the previous information stored in the hard disk 7 of the server PC 6 can also be obtained.

Further, the client PC 32 can refer to information even when dial-up is disconnected.
It is also possible to download information to the client PC 32 itself.

Next, FIG. 5 shows a flowchart for explaining the operation of the client PC. The operation of the server PC 6 is the same as that of the embodiment shown in FIG.

First, the client PC 32 makes a dial-up connection to the network to which the data broadcast receiving server PC 6 belongs.

Then, the data broadcast receiving software is started (S60), and it is determined whether or not the server PC exists (S60).
61) If it does not exist, the process ends as an error in the receiving software or the public line, the server PC, etc. (S66).
2) The latest data stored in the server PC 6 is displayed on a display in a selectable menu format, for example (S
63), necessary data is selected and obtained, and the server PC 6
The data is repeatedly obtained until the end of the distribution is requested (S64). When the data reception is completed, the receiving software is terminated (S65), and the reception is terminated.

Next, regarding the repeated data acquisition in step 64, first, after step S63, it is determined from the menu-like display whether or not the previous data is to be referred to (S71). The displayed data is sequentially displayed (S75). When referencing, the information list stored in the server PC 6 is displayed (S72), and necessary data is selected from the information list (S7).
3) Access the server PC 6 to acquire data, and display the data on a display (S74). Thereafter, it is determined whether or not to download the data information. If so, necessary data stored by the server PC 6 is downloaded (S77),
Also, as in the case where no download is performed in step S76,
The process returns to step 70 again and repeats (S78).

Thereafter, every time the server PC obtains the latest information, the server PC 6 → network 9 → dial-up router 20 → public line → mobile phone 21 → client P
Since the latest information is delivered one after another in the order of C32, the information is sequentially displayed.

The information stored in the hard disk 7 of the server PC 6 can also be grasped by the client PC 32 based on a list of stored information and the like, and all of the information stored in the hard disk 7 can be similarly displayed on the display of the client PC 32. Can also be stored on the hard disk in the client PC 32.

Then, each time the client PC desires to display certain information, the client PC accesses the server PC via a dial-up connection every time to acquire and display the information.

Furthermore, if the displayed information is downloaded to its own hard disk, it is possible to refer to it even after dial-up connection is completed.

Further, for example, in FIG.
13 does not sign a data acquisition contract with a specific broadcasting station, the receiving software of the client cannot decrypt the specific encryption in the data of the specific broadcasting station. Since the data of this specific broadcasting station is not displayed, the data cannot be obtained. In this case, the eavesdropping and data acquisition are disabled by determining whether or not a contract has been made with the receiving software, but it may be determined whether or not distribution is possible with the server PC 6.

[0046]

According to the present invention, the data broadcast receiving board may be mounted only on the server PC, and the client PC
Since there is no need to install a board, the capital investment can be reduced. In other words, to the client PC,
You only need to supply software. Also, in an environment, an antenna for receiving data broadcast may be pulled even in the server PC, and data distribution to the client PC may be performed by using the existing LAN as it is.

Further, since all the processing is performed by the server PC, the burden on the client PC can be minimized. That is, the server PC receives the data broadcast, stores it on its own hard disk, and distributes it to the client. Then, the client PC only needs to display the distributed data. Also, since the server PC also stores the past data, the client P
C is the server P only when displaying necessary past data
It is sufficient to access C to acquire and display data, and the degree of freedom in acquiring received data increases. In other words, there is no need to store data in the client PC, and there is no need to provide a large storage capacity such as a hard disk or a DVD-RAM, so that a low-cost client PC can be used.

[Brief description of the drawings]

FIG. 1 is a schematic system diagram of a data broadcast receiving system according to an embodiment of the present invention.

FIG. 2 is a flowchart of a server PC of the data broadcast receiving system according to the embodiment of the present invention.

FIG. 3 is a flowchart of a client PC of the data broadcast receiving system according to the embodiment of the present invention.

FIG. 4 is a schematic system diagram of a data broadcast receiving system according to an embodiment of the present invention.

FIG. 5 is a flowchart of a server PC of the data broadcast receiving system according to the embodiment of the present invention.

FIG. 6 is a schematic system diagram of a data broadcast receiving system according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Broadcast satellite 2 Parabolic antenna 3 Terrestrial antenna 4 Parabolic antenna 5 Yagi antenna 6 Server PC 7 Hard disk 8 Antenna cable 9 Network cable 10, 11, 12, 13 Client PC 20 Dial-up connection router 21, 22, 23, 32 Client PC 30 Public wireless line 31 Mobile phone

Claims (7)

[Claims] 1. A data distribution system for receiving a data broadcast from a terrestrial wave and a satellite wave, comprising: a server PC for receiving the data broadcast; and a server PC for receiving the data broadcast.
And a plurality of client PCs which form a network with the server PC and transmit and receive data of the data broadcast.
C is a data distribution system which starts receiving software and receives the data of the data broadcast via the network. 2. The data distribution system according to claim 1, wherein the client PC displays a plurality of data of the data broadcast stored in the recording medium on a display, selects desired data, and thereafter selects the desired data. A data distribution system characterized by acquiring the data of 3. The data distribution system according to claim 1, wherein the server PC is connected to the client PC when the contents of the data in the data of the data broadcast are prepared.
A data distribution system that completes preparation for distribution to the client PC, transmits selection menu screen data in response to access from the client PC, and transmits the data in response to data selection by the client PC. 4. A network comprising a server PC for receiving a data broadcast, a recording medium connected to the server PC, and a plurality of client PCs which form a network with the server PC and transmit / receive data to / from the server PC. In the data distribution method, the client PC activates receiving software, detects the presence of the server PC, requests the server PC to start data distribution, and stores a plurality of contents stored in the recording medium of the server PC. Display the latest data including on the display, obtain the desired data in the latest data,
A data distribution method, wherein the data is sequentially displayed on the display and the receiving software is terminated. 5. The data distribution method according to claim 4, wherein when displaying the latest data, a data list of the latest data is displayed, necessary data is selected from the data list, and the required data is obtained. A data distribution method. 6. The data distribution method according to claim 4, wherein the server PC updates a distribution screen to the client PC while receiving data from a data broadcast, and stores the data on the recording medium. A data distribution method, wherein a distribution screen of past data to the client PC is updated. 7. A server PC for receiving a data broadcast, a recording medium connected to the server PC, and a plurality of client PCs which form a network including the server PC and a public line and transmit and receive data to and from the server PC. The client PC activates receiving software, detects the presence of the server PC via the public line, requests the server PC to start data distribution, and A data distribution method comprising: displaying latest data or a plurality of previous data including a plurality of contents stored in a recording medium on a display; and downloading desired data from the latest data or the previous data.