JPH0837506A - Information provision system - Google Patents

Abstract

(57) [Abstract] [Purpose] Even if data is updated, the latest information can be efficiently obtained without exchanging the recording medium such as a CD-ROM. [Structure] It is composed of a center as an information provider side and a terminal which is a user side terminal to receive information from the center, and a CD-RO is provided at the terminal TE side.
An M20a reading device 20 is arranged. And on the terminal TE side, this CD-ROM 20a
New information or CD-RO other than the information recorded in
Among the information recorded in the M20a, a request is made to the center CE for information that needs to be updated, and the requested center transmits the update information and the like to the terminal TE side through the communication line. To be done. Therefore, the user can efficiently obtain the latest information without exchanging the CD-ROM 20a even if the data is updated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information providing system composed of a center for providing information such as images and music and a plurality of terminals for receiving information from the center.

[0002]

2. Description of the Related Art As an information providing system composed of a center for providing information and a plurality of terminals for receiving information from the center, a user, that is, a user, A database system or a personal computer communication system in which desired information on the terminal side is taken out from the center side is widely used.

In this type of system, in order to retrieve and receive information required on the terminal side, the content display (directory information) of the information supplied from the center side to the terminal side is referred to while the line is connected. It is done by that. Such a database system, a personal computer communication system, or the like is suitable for an information providing service for extracting information such as text information that has a relatively small amount of information and an unlimited information transfer rate.

[0004]

However, in the case of a large amount of information such as video and music, the information transmission speed of the line becomes a bottleneck, and it takes more than real time for transmission. However, there was a problem that the line cost would increase.

When broadcasting is used as an information transmission medium, the transmission speed increases and the information transmission becomes easy. However, since the transmission direction is unidirectional, when the information sent once is to be updated, There was the problem of having to resend everything. In addition, it is practically impossible to update the partial information because it cannot be related to the previously sent information.

Further, in the case of a large-capacity recording medium such as a CD-ROM, it has been conventionally provided by the supplier to the user side by means of physical distribution, but since it is impossible to write on the recording medium, it is partially Even when updating the information, the recording medium (CD-ROM) itself must be replaced.

In recent years, especially, karaoke information consisting of video and music is transmitted to MIDI (Musical I
nstrument Digital Interfa
ce) signal is transmitted from the center to the terminal each time using an ISDN line or the like, so-called communication karaoke is being developed, but there is a problem that the line connection fee becomes expensive.

The present invention has been made in view of the above point, and in a user side terminal (terminal), normally necessary information is stored in a recording medium such as a CD-ROM on the terminal side. However, by collecting only the newly necessary information or the information to be updated from the center in the broadcast or cable line format to the terminal, running costs such as line connection charges can be reduced and desired information can be efficiently obtained. It is intended to provide an information providing system that can be withdrawn.

[0009]

An information providing system according to a first aspect of the present invention is a center for providing information (for example, a center CE shown in FIGS. 1 and 2) and a terminal for receiving information from the center ( For example, an information providing system including terminals TE shown in FIGS. 1 and 3,
On the terminal TE side, information reading means (for example, CD-RO shown in FIG. 3) for reading information from a recording medium (for example, CD-ROM 20a shown in FIG. 3) in which information is recorded in advance.
M reading device 20) and the terminal side first transmission for transmitting to the center the new information other than the information recorded on the recording medium or the request information requiring updating of the information recorded on the recording medium Means (for example, the communication interface section 30 shown in FIG. 3) and first terminal-side receiving means for receiving new information or update information transmitted from the center side (for example, the communication interface section 30 shown in FIG. 3)
And terminal-side information storage means (for example, the information storage device 22 shown in FIG. 3) for storing the reception information received by the terminal-side first reception means, and the center CE side stores the information to be provided. Information storage means (for example, information storage device 1 shown in FIG. 2), center first receiving means (for example, communication interface unit 9 shown in FIG. 2) for receiving request information from the terminal side, and center side first An information retrieval unit (for example, CPU 4 shown in FIG. 2) for retrieving the information stored in the center-side information accumulating unit based on the request information received by the receiving unit, and the information retrieved by the information retrieving unit to the terminal. Operations of the center-side first transmitting means (for example, the communication interface unit 9 shown in FIG. 2) for transmitting to the center, the center-side first receiving means, and the center-side first transmitting means. Wherein the central processing means for controlling the (e.g. CPU4 shown in FIG. 2) is provided.

An information providing system according to a second aspect of the present invention is a center for providing information (for example, the center CE shown in FIGS. 1 and 6) and a terminal for receiving information from the center (for example, FIG. 1, An information providing system configured by a terminal TE shown in FIG. 7, wherein information reading means for reading information from a recording medium (for example, a CD-ROM 20a shown in FIG. 7) on which information is previously recorded is provided on the terminal TE side. (For example, the CD-ROM reading device 20 shown in FIG. 7) and information storage means (for example, the information storage device 22 shown in FIG. 7) that receives information sequentially transmitted from the center side by the second transmission means and stores the received information. , 32)
And the terminal-side first transmitting means for transmitting new information other than the information stored in the recording medium or the information accumulating means and request information requiring updating to the center (for example, the communication interface unit 30 shown in FIG. 7). And a terminal-side first receiving means (for example, the communication interface unit 30 shown in FIG. 7) that receives new information or update information transmitted from the center side, and the received information received by the terminal-side first receiving means. An information storage means (for example, information storage devices 22 and 32 shown in FIG. 7) is provided, and an information storage means (for example, information storage device 1 shown in FIG. 6) for storing information to be provided is provided on the center side. , Second transmitting means for selecting from the information storing means and sequentially transmitting the selected information to the terminal (for example, satellite line interface section 10 shown in FIG. 6) , A center side first receiving means (for example, the communication interface section 9 shown in FIG. 6) for receiving request information from the terminal side, and a request information received by the center side first receiving means, and stored in the information storing means. Information retrieval means for extracting the stored information (for example, CPU 6 shown in FIG. 6), and center-side first transmission means for transmitting the information retrieved by the information retrieval means to the terminal (for example, communication interface section 9 shown in FIG. 6) ) And a central processing means (for example, CPU 6 shown in FIG. 6) for controlling the operation of the center side first receiving means, the center side first transmitting means, and the second transmitting means.

Further, in the information providing system according to the third aspect, the first transmitting means (for example, the communication interface section 9 in FIGS. 6 and 7) and the first receiving means (for example, the communication interface section 9 in FIGS. 6 and 7). ) Is a line transmission format using a cable as a medium (for example, CA in FIG. 1), and the second transmitting means (for example, satellite line interface section 10 in FIG. 6) and second receiving means (for example, FIG. 76
The transmission format used for the satellite line interface section 31) is a broadcast format using an antenna radio wave (for example, S in FIG. 1).
A) is a feature.

In the information providing system according to the fourth aspect, the medium identification ID of the recording medium, the information identification ID of each information recorded in the recording medium, and the update time of each terminal are recorded on the terminal side. It is characterized by having management information (for example, FIG. 8).

According to another aspect of the information providing system of the present invention, the central processing means (for example, the CPU 4 shown in FIG. 4) receives the request information from the terminal and extracts the terminal ID (for example, shown in FIG. 4). (Step S101)
And a step of determining whether the information service is available from the extracted terminal ID (for example, step S102 shown in FIG. 4), and extracting an ID for identifying the recording medium used on the terminal side. Step (for example, step S104 shown in FIG. 4), step for extracting the ID of the information requested by the terminal side (for example, step S105 shown in FIG. 4), and information corresponding to the ID of the information is retrieved from the information storage means. It is characterized by including steps (for example, step S106 shown in FIG. 4) and steps for transmitting the retrieved information to the terminal that issued the request information (for example, step S108 shown in FIG. 4).

In the information providing system according to the sixth aspect, the central processing means (for example, the CPU 4 shown in FIG. 4) receives the request information from the terminal and receives new information or update information for the recording medium held by the terminal. Is transmitted, a step (for example, step S109 shown in FIG. 4) of charging the terminal that issued the request information is provided.

In the information providing system according to the seventh aspect, karaoke information is recorded on a recording medium (for example, the CD-ROM 20a shown in FIG. 7) and transmitted from the center to the terminal by the second transmitting means. The information is characterized as being new karaoke information.

In the information providing system according to the eighth aspect, the second transmitting means for transmitting the karaoke information from the center to the terminal is a control means for periodically performing transmission control (for example, the CPU 4 and the CPU 4 shown in FIG. 6). It is characterized by being controlled by a timer 4a).

[0017]

In the information providing system according to the first aspect of the present invention, a CD-recorded information is previously recorded on the terminal TE side.
A CD-ROM reading device 20 for reading information from the ROM 20a is prepared, and new information or CD-ROM other than the information recorded in the CD-ROM 20a is prepared.
Information that requires updating among the information recorded in 20a is requested to the center CE. Center C that received the request
The E extracts the request information from the information storage device 1 and transmits it to the terminal TE side.

In the information providing system according to the second aspect of the present invention, a CD in which information is recorded in advance on the terminal TE side.
A CD-ROM reader 20 for reading information from the ROM 20a is prepared, and an information storage device 22 for storing information sequentially transmitted from the center CE is provided on the terminal TE side. And CD-ROM 20
It requests the center CE for new information or information that needs updating other than the information recorded in a and the information stored in the information storage device 22. Upon receiving the request, the center CE extracts the request information from the information storage device 1 and transmits it to the terminal TE side.

Further, in the information providing system according to the third aspect of the invention, there is provided the first system between the center CE and the terminal TE.
A line transmission means using a cable as a medium is used as the transmission / reception means, and a transmission means in a broadcasting format using an antenna radio wave is used as the second transmission / reception means between the center CE and the terminal TE.

Further, in the information providing system according to claim 4, on the terminal TE side, a medium identification ID indicating the type of recording medium, an information identification ID for each information recorded on the recording medium, and the terminal It is configured to retain management information that records the time of each update.

In the information providing system according to the fifth aspect, the CPU 4 receives the request information from the terminal TE, and first determines whether or not the terminal can use the information service. When available, the ID for identifying the recording medium used on the terminal side and the ID of the information requested on the terminal side are extracted, and the information is transmitted to the terminal that issued the request information. To be done.

In the information providing system according to the sixth aspect, when the CPU 4 receives the request information from the terminal and sends new information or update information to the recording medium held by the terminal, the request information is issued. It is arranged to charge the terminal that has

In the information providing system according to the seventh aspect, karaoke information is recorded in the CD-ROM 20a, and the new karaoke information is transmitted from the center in a broadcast format.

In the information providing system according to the eighth aspect, when the karaoke information is transmitted from the center to the terminal in the broadcast format, the transmission control is periodically performed by the timer 4a.

[0025]

The present invention will be described below based on the embodiments shown in the drawings. FIG. 1 is a block diagram showing the basic configuration of the information providing system of the present invention.

The information providing system of the present invention, as shown in FIG. 1, has a center CE and a center C on the information provider side.
It is composed of a terminal TE which is a user side terminal to which information from E is provided. Then, on the center CE side, information is transmitted to the communication satellite SA by the antenna radio wave RF1. On the other hand, the communication satellite SA is configured to retransmit information to the terminal TE by the retransmit radio wave RF2. As a result, a satellite broadcasting network using the antenna radio waves for providing information from the center CE side to the terminal TE side is constructed.

Further, a communication network using a cable CA such as ISDN as a medium is constructed between the center CE and the terminal TE and relates to new information or information that needs updating specified on the terminal TE side. The information is transmitted from the center CE to the terminal TE in the line transmission format using the cable CA as a medium.

FIG. 2 shows a cable C as means for transmitting information.
1 is a block diagram showing a configuration of a center CE in a first embodiment of the present invention which utilizes a communication network using A as a medium. That is, in the center CE, the information storage device 1 as information storage means that stores information to be provided to each terminal TE, billing information for each user, update history information, user's telephone number, etc. An information storage device 2 for storing data, an encryption circuit 3 for encrypting transmission information, a central processing unit (CPU) 4 for executing a control program, a RAM 5 for storing the current status, and an execution program for the CPU 4. The ROM 6 which stores the management information of the information storage device 1 is a system bus 7 of the CPU 4 which includes a data bus, an address bus, a control bus, etc.
Connected to each other.

A conversion circuit 8 for converting the transmission information so that it can be transmitted to the line is connected to the encryption circuit 3, and a communication interface unit 9 for outputting information to the cable line is connected to the conversion circuit 8. It is connected.

FIG. 3 is a block diagram showing the configuration of the terminal TE in the first embodiment of the present invention. CD with pre-recorded information on the terminal TE
-CD-ROM reading device 2 as information reading means for reading information from a recording medium 20a including a ROM
0, a decryption circuit 21 for decrypting encrypted information obtained from the center CE, an information storage device 22 for storing the information received from the cable line decrypted by the decryption circuit 21, and temporary information for the control program. A RAM 23 to be copied, a display circuit 24 for converting information stored in the information storage device 22 into display character information, an operating device 25 for operating a terminal, a CPU 26 for executing a control program, an execution program and a terminal TE. The ROM 27 storing the management information has a data bus,
They are mutually connected to the system bus 28 of the CPU 26, which includes an address bus, a control bus, and the like.

The display circuit 24 displays the character information and the like supplied from the display circuit 24.
Is connected, and the decryption circuit 21 is connected to a communication interface section 30 with a cable line.

The center CE shown in FIGS. 2 and 3 has been described above.
CD-ROM by combining with the terminal TE
Such as new information other than the information recorded in the recording medium 20a, or information relating to the information that needs to be updated among the information recorded in the recording medium 20a, selectively from the center CE to the terminal TE. An information providing system that can be supplemented is constructed.

The operation of the information providing system configured as above will be described below. FIG. 4 shows new information other than the information recorded on the medium (CD-ROM) arranged on the terminal TE side, or the update information that needs to be updated among the information recorded on the medium.
The case where the E side requests the center CE side via the ISDN line and the requested information is transmitted from the center CE side to the terminal TE side is shown.

First, when the communication interface unit 9 of the center CE receives the call setup message from the terminal TE, in step S101, the I / I of the user included in the user / user information (UUI) in the call setup message.
D is passed to the CPU 4 via the communication interface unit 9.
Next, in step S102, the CPU 4 checks whether or not the user can receive the service from the information stored in the information storage device 2 based on the user ID received from the communication interface unit 9. To do. Then step S
In 103, the CPU 4 has the communication interface unit 9
By extracting the medium update request command from the information received from the server, the medium information update request is recognized. Subsequently, in step S104, the CPU 4 determines the medium currently used by the terminal user from the medium identification ID received from the communication interface unit 9. Then, in step S105, the CPU 4 determines the information that the user received from the communication interface unit 9 is currently requesting the update.

Next, in step S106, the CPU 4
Searches the information storage device 1 for update information about the medium based on the user ID obtained in step S101.
Then, in step S107, the CPU 4 determines the information necessary for updating from the information storage device 1 based on the information obtained in step S106.

When the above setting is completed, step S
At 108, the CPU 4 reads the information from the information storage device 1, encrypts the information by the encryption circuit 3, converts the information into a data format that can be sent to the line through the conversion circuit 8, and then the communication interface unit 9 Will be sent to the terminal TE on the user side.

At the user terminal TE, the transmitted update information is decrypted by the decryption circuit 21 and stored in the information storage device 22. When the transmission of the information from the center CE is completed, the CPU 4 proceeds to step S109.
The billing information of the user stored in the information storage device 2 is updated and billing processing is performed.

Next, in step S110, the center C
The CPU 4 on the E side requests the user to update the medium management information recorded in the information storage device 22. After the above-described series of work is completed, communication release processing is performed in step S111.

The above operation has shown an example of exchanging information between the center CE and the terminal TE via the ISDN line. Next, the operation of updating the information from the center CE to the terminal TE will be described. The case of using an analog telephone line will be described with reference to the flowchart shown in FIG.

When the information provider needs to update certain medium information, the update history information of the user and the telephone number information of the user stored in the information storage device 2 are searched in step S201, and the step is performed. In step S202, the line is connected (called) to the user via the communication interface unit 9.

Next, in step S203, the user sends the user ID to the information provider (center CE) via the communication interface section 30. Next, in step S204, the information provider authenticates that the CPU 4 is a legitimate user based on the user ID obtained from the communication interface unit 9, and in step S205, the information that needs to be updated is stored. The communication interface unit 9 sends out the recorded medium ID.

The user terminal (terminal TE) receives the medium ID from the communication interface section 30, reads the corresponding subscriber information from the information storage device 22, and prepares for updating. The CPU 4 of the center CE executes step S20.
At 6, the update information is encrypted by the encryption circuit 3 and sent to the communication line CA via the communication interface unit 9.

In step S207, the terminal transfers to the RAM 23 the information to be updated from the management information of the corresponding medium stored in the information storage device 22. Change the corresponding information moved to the RAM 23 from the received update information,
After that, the information is copied to the information storage device 22. Finally, in step S208, communication is released.

Through the above steps, the information provider can update the information of the desired medium through the communication line, and the user can use the latest information.

In the above description, ISDN is used as a communication network.
However, the same effect can be expected by using other communication networks such as satellite communication and LAN.

Next, FIGS. 6 and 7 show the first embodiment of the present invention in which a communication network using a cable as a medium is used as a means for transmitting information, and both a satellite broadcasting network using an antenna radio wave is utilized. 2 is a block diagram showing the configuration of the second embodiment.

First, FIG. 6 shows the structure of the center CE, and the same reference numerals as those in FIG. 2 have the same functions, and therefore detailed description thereof will be omitted. In FIG. 6, the difference from FIG. 2 is that the satellite circuit interface unit 10 is connected to the conversion circuit 4 so that the information can be transmitted using the satellite circuit together with the communication circuit using the cable. That is the point.

On the other hand, FIG. 7 shows the structure of the terminal TE, and the same reference numerals as those in FIG. 3 have the same functions, and therefore the detailed description thereof will be omitted. In FIG. 7, the difference from FIG. 3 is that
A satellite line interface unit 31 for receiving the information transmitted from the center CE via the satellite line and supplying the received signal to the decryption circuit 21 is additionally provided, and an information storage device for the system bus 28 is provided. 32 is connected so that a backup of the information storage device 22 which is also connected to the system bus 21 can be stored.

The second embodiment shown in FIGS. 6 and 7 can be used for transmitting, for example, karaoke information from the center CE to the terminal TE.

As is well known, the karaoke information has a comparatively large amount of data consisting of video and music, and for example information such as new music information expected to be requested by a large number of terminals is broadcast-type transmission means. The efficient use can be achieved by transmitting efficiently to each terminal simultaneously by using, and transmitting special request information or update information of each terminal through a communication line using a cable.

Here, FIG. 8 shows the structure of the user management data of the karaoke information provider. The user terminals that have contracted with the karaoke information provider are terminal I
D, registered telephone number, billing information, update date and time, etc. are stored in the information storage device 2.

Next, the structure of the management information of the karaoke information is shown in FIG.
Shown in For all the stored songs, ID,
Music information, billing information, registration date and time, and storage location information are stored in the information storage device 1. The song information includes a song name, performance time, songwriting, composer name, and the like. The registration date and time is
Indicates the date and time when the song was registered in the information storage device 1. The storage position information is an address indicating the actual storage position of karaoke information.

An operation procedure in the case where the information provider uses the satellite SA to send karaoke information to the user at any time or periodically will be described below with reference to FIG.

First, the CPU of the information provider (center CE)
4 activates the sending program periodically or artificially at any time according to the timing information from the timer 4a. CPU4
In step S301, the management database of the registered terminal stored in the information storage device 2 is searched, and the RAM 5
Copy to. Next, in step S302, the RAM 5
The telephone number of the registered terminal to be transmitted is read from the terminal management information copied in. In step S303, a call is made to the read telephone number using the communication interface unit 9. Next, in step S304, the CPU 4
Sends the ID of the information provider and a key transmission command prompting the preparation for receiving the key to the user / user information and sending it to the terminal through the communication interface unit 9 and the encryption key information for decrypting the code of the karaoke information to be transmitted. Send.

Next, the CPU 26 of the terminal detects from the user-user information received from the communication interface unit 30 that the decryption key is to be sent. When the preparation for reception is completed, in step S304, the CPU 26 determines the terminal ID.
Communication interface unit 3 via the user / user information
Send from 0 to the karaoke information provider.

In step S305, the CPU 26 extracts the terminal ID from the user / user information received from the communication interface unit 9. Next in step S306
At 26, the CPU 26 authenticates by comparing the extracted terminal ID with the terminal ID copied to the RAM 5 in step S301. If the authentication is not possible (No), the process proceeds to step S311 and the call disconnection / release processing is performed.
When the authentication is OK (YES), in step S307, the CPU 4 sends the decryption key to the user / user information and sends it to the terminal via the communication interface unit 9.

When the terminal correctly receives the decryption key,
In step S308, the CPU 26 transmits the completion of the decryption key reception to the karaoke information provider from the communication interface unit 30 via the user / user information. Finally, in step S309, the CPU 4 updates the accounting information and the update date / time information in the management information copied in the RAM 5, and copies the updated information into the information storage device 2.

The above steps S301 to S309 are repeated for all the terminals registered in the management information. If it is determined in step S310 that the process has been completed for all terminals, the call disconnection / release process is performed in step S311. After the call disconnection / release processing is performed in step S311, the actual karaoke information is transmitted to the terminal using the satellite line.

Transmission of karaoke information has two operation modes: a mode for transmitting all information and a mode for transmitting only the information added to the previously transmitted information. These two operation modes will be described with reference to FIGS. 11 and 12.

First, the CPU 4 determines whether to send all the information or to send the additional information (or update information) according to the sending program. If the mode is to send all information, the routine shown as "A" in FIG. 11 is executed.

First, in step S401, the CPU
Reference numeral 4 reads management information (directory information) of karaoke information recorded in the information storage device 1. The karaoke information recorded in the management information is searched, and the actual karaoke information is read from the information storage device 1. In step S402, the read information is encrypted by the encryption circuit 3, converted by the conversion circuit 4 so that it can be sent to the line interface, and transmitted to the terminal via the satellite line interface unit 10.

In step S403, the above operation is repeated until all the karaoke information recorded in the management information is completed. When all the transmissions are completed, the process ends.

Next, in the mode for sending the additional information (or the update information), the routine shown as "B" in FIG. 12 is executed. That is, in step S501, the CP
U4 searches the management information (directory information) of the karaoke information recorded in the information storage device 1. Next, in step S502, the registration date / time information recorded in the management information is read out, and it is compared whether it is newer than the previous update date / time (transmission date / time). If it is new, the actual karaoke information is read from the information storage device 1. In step S503, the read information is encrypted by the encryption circuit 3, data is converted by the conversion circuit 4 so that it can be sent to the line interface, and the data is transmitted to the terminal via the satellite line interface unit 10.

In step S504, the above operation is repeated until all the karaoke information recorded in the management information is completed. When all the transmissions are completed, the process ends.

On the terminal side which receives and records the transmitted karaoke information, the information storage device 22 and the information storage device 3 are connected.
Two storage systems of 2 are prepared, and by alternately recording and updating information, an accident such as disappearance of information can be avoided. Further, the CD-ROM reading device 20 can secure the necessary minimum number of songs without using the satellite line.

In this embodiment, the case where ISDN is used as the communication network has been described, but an analog telephone network or CAT is used.
It can also be realized by using a transmission network such as a V network or a local area network.

[0067]

As is apparent from the above description, claim 1
According to the information providing system described in (1), a reading device for a recording medium such as a CD-ROM in which information is recorded in advance is prepared on the terminal side, and new information or CD other than the information recorded in the CD-ROM is prepared. -Since the center can be requested to update the information stored in the ROM that requires updating, the user can efficiently update the data without exchanging the CD-ROM. It becomes possible to obtain the latest information.

According to the information providing system of the second aspect, the CD-R in which information is recorded in advance on the terminal side.
A reading device for a recording medium such as an OM is prepared, and the terminal side is provided with an information storage device for storing information sequentially transmitted from the center. And CD
-Since the center can be requested to provide new information or update other than the information recorded in the ROM and the information stored in the information storage device, it is possible to reduce running costs such as line connection charges and to obtain the desired information. It is possible to efficiently extract the information of.

According to the third aspect of the information providing system, the line transmission means using a cable as a medium is used as the first transmission / reception means between the center and the terminal, and between the center and the terminal. As the second transmission / reception means, the transmission means in the broadcasting format using the antenna radio wave is used. Therefore, for example, common update information for each terminal is collectively transmitted in the broadcasting format, and the individual required information for each terminal is transmitted. It is possible to obtain various information by means of transmission through a cable, and thus economical operation can be achieved.

Further, according to the information providing system of claim 4, on the terminal side, a medium identification ID indicating the type of the recording medium, an information identification ID for each information recorded on the recording medium, and for each terminal Since the management information for recording the update time is stored, the update information for each terminal can be surely grasped, which can contribute to the improvement of the service for each terminal.

According to the information providing system of claim 5, the CPU of the center receives the request information from the terminal, and first determines whether or not the terminal can use the information service. As a result, it is possible to secure security in selling information.

According to the sixth aspect of the information providing system, when the CPU of the center receives the request information from the terminal and sends new information or update information to the recording medium held by the terminal, Since we charged the terminal that issued the request information,
It is possible to guarantee the sound operation of the information provider.

According to the information providing system of claim 7, karaoke information is recorded on the CD-ROM, and the new karaoke information is transmitted from the center in a broadcast format. It is possible to reduce the information transmission cost and the time required.

Further, according to the information providing system of the eighth aspect, since the karaoke information is transmitted from the center to the terminal on a regular basis in a broadcast format, the subscriber side can, for example, receive new karaoke information without delay. Can be obtained efficiently.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of a communication system of an information providing system of the present invention.

FIG. 2 is a block diagram showing the configuration of the first embodiment on the center side according to the information providing system of the present invention.

FIG. 3 is a block diagram showing a configuration of a first embodiment on the terminal side according to the information providing system of the present invention.

FIG. 4 is a flowchart showing an operation in the center and the terminal shown in FIGS. 2 and 3.

5 is a flowchart showing another operation of the center and terminal shown in FIGS. 2 and 3. FIG.

FIG. 6 is a block diagram showing a configuration of a second embodiment on the center side according to the information providing system of the present invention.

FIG. 7 is a block diagram showing a configuration of a second embodiment on the terminal side according to the information providing system of the present invention.

FIG. 8 is a configuration diagram showing an arrangement state of terminal management directory information used in the present invention.

FIG. 9 is a configuration diagram showing an array state of management information of karaoke information used in the present invention.

FIG. 10 is a flowchart showing an operation in the center and the terminal shown in FIGS. 6 and 7.

FIG. 11 is a flowchart showing the operation of the center and the terminal shown in FIGS. 6 and 7 in the first mode.

FIG. 12 is a flowchart showing the operation of the center and the terminal shown in FIGS. 6 and 7 in the second mode.

[Explanation of symbols]

1 information storage device (information storage means) 2 information storage device 3 encryption circuit 4 CPU (central processing unit) 5 RAM 6 ROM 7 system bus 8 conversion circuit 9 communication interface section (center side first transmission means, center side first) Receiving means 10 Satellite line interface section (center side second transmitting means) 20 CD-ROM reading device (information reading means) 20a CD-ROM (information recording medium) 21 Decryption circuit 22 Information storage device (information storage means) 23 RAM 24 display circuit 25 operating device 26 CPU (central processing unit) 27 ROM 28 system bus 29 display device 30 communication interface section (first terminal side transmitting means, terminal side first receiving means) 31 satellite line interface section (terminal side first) 2 receiving means) 32 information storage device (information storage means) E center TE Terminal SA communication satellites RF1 antenna Telecommunications RF2 retransmission Telecommunications CA cable

Claims (8)

[Claims] 1. An information providing system comprising a center for providing information and a terminal for receiving information from the center, wherein information is recorded on a recording medium in which information is recorded in advance on the terminal side. Information reading means for reading, and terminal-side first transmission for transmitting new information other than the information recorded on the recording medium or request information requiring updating of the information recorded on the recording medium to the center Means, terminal-side first receiving means for receiving new information or update information transmitted from the center side, and terminal-side information accumulating means for storing the received information received by the terminal-side first receiving means. Also, the center side has an information storage means for storing information to be provided and a center side for receiving request information from the terminal side. Receiving means, information searching means for searching the information stored in the center side information storing means based on the request information received by the center side first receiving means, and information searched by the information searching means. An information providing system comprising: a center-side first transmitting means for transmitting to a terminal; and a central processing means for controlling the operation of the center-side first receiving means and the center-side first transmitting means. . 2. An information providing system comprising a center for providing information and a terminal for receiving information from the center, wherein the terminal side stores information from a recording medium on which information is recorded in advance. Information reading means for reading, information accumulating means for receiving information sequentially transmitted from the center side by the second transmitting means and storing the received information, and new information other than the information stored in the recording medium or the information accumulating means And terminal-side first transmitting means for transmitting request information requiring updating to the center, terminal-side first receiving means for receiving new information or update information transmitted from the center side, and terminal-side first receiving means. 1 information storage means for storing the reception information received by the reception means, and the center side stores the information to be provided. Information storing means, second transmitting means for sequentially transmitting the selected information to the terminal selected from the information storing means, center side first receiving means for receiving request information from the terminal side, the center An information retrieving means for retrieving the information stored in the information accumulating means based on the management information received by the first side receiving means; and a center-side first means for transmitting the information retrieved by the information retrieving means to the terminal. An information providing system comprising: one transmitting means; and a central processing means for controlling the operation of the center side first receiving means, the center side first transmitting means, and the second transmitting means. 3. The transmission form used for the first transmission means and the first reception means is a line transmission form using a cable as a medium, and the transmission form used for the second transmission means and the second reception means is an antenna. The information providing system according to claim 1, wherein the information providing system is a broadcast format that uses radio waves. 4. The terminal side has a medium identification ID of the recording medium, an information identification ID for each information recorded on the recording medium, and management information for recording an update time for each terminal. The information providing system according to any one of claims 1 to 3. 5. The central processing means receives a request information from a terminal and extracts an ID of the terminal; and a step of determining whether or not the information service is available from the extracted terminal ID. A step of extracting an ID for identifying a recording medium used on the terminal side, a step of extracting an ID of information requested by the terminal side, and a step of retrieving information corresponding to the ID of the information from the information storage means 5. The information providing system according to claim 1, further comprising: a step of transmitting the retrieved information to a terminal which issued the request information. 6. The central processing means, when receiving the request information from the terminal and transmitting new information or update information to the recording medium held by the terminal, charges the terminal which issued the request information. The information providing system according to claim 1, further comprising steps. 7. The karaoke information is recorded on the recording medium, and the information transmitted from the center to the terminal by the second transmitting means is new karaoke information. The information providing system described in any one of. 8. The information providing apparatus according to claim 7, wherein the second transmitting means for transmitting the karaoke information from the center to the terminal is controlled by a control means for periodically performing transmission control. system.