JP3777231B2 - Data communication system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a data communication system that performs data communication between a host device and a terminal device through a communication line such as a telephone line.
[0002]
[Problems to be solved by the invention]
For example, in a communication type karaoke apparatus, a karaoke apparatus body that is a terminal apparatus includes a storage device (hard disk) that stores karaoke performance data (MIDI data, etc.) of a large number of songs and a data communication function. Has been. For example, newly produced karaoke performance data is stored and stored in the storage device by being transmitted from the host device side through the telephone line as needed. As a result, there are many songs that can be played karaoke, and new songs can be handled quickly.
[0003]
In this case, a data communication system for this type of communication type karaoke is configured as shown in FIG. In other words, the host device (host computer) 1 is connected to a plurality of sub-host devices 3 installed for each area through a communication line 2, and each of these sub-host devices 3 is connected to a telephone line 4. It is connected to a large number of terminal devices (karaoke devices) 5 installed in the area.
[0004]
The host device 1 transmits karaoke performance data of a new song, collects data on the operating status of the terminal device 5, etc., and transmits newly produced karaoke performance data to each sub-host device 3 as needed. It has become. Each sub-host device 3 is configured to sequentially call each terminal device 5 belonging to the local area and transmit karaoke performance data of a new song in a predetermined time zone at midnight, for example.
[0005]
However, in such a configuration, when the sub-host device 3 calls the terminal device 5, the telephone line 4 is in use (busy) on the terminal device 5 side, or the telephone line 4 is defective or the like. If communication is not possible, retry (repeating the call) must be continued until the terminal device 5 is connected. Therefore, the efficiency of data communication is low, and the time required for communication as a whole is long. There was a bug.
[0006]
In recent years, so-called hackers and the like have been pointed out that information stored in the computer is illegally leaked to the outside. However, in the sub-host device 3 as described above, the telephone number information of each terminal device 5 is also provided. Since these are stored, there are circumstances in which improvements in safety and reliability are desired.
[0007]
The present invention has been made in view of the above circumstances, and an object thereof is to improve communication efficiency by eliminating retry of line connection work when performing data communication between a host device and a terminal device through a communication line. The present invention provides a data communication system capable of performing the above.
[0008]
[Means for Solving the Problems]
To achieve the above object, a data communication system according to claim 1 of the present invention is provided with a sub-host device connected by a communication line comprising a telephone line to a host device and a plurality of terminal devices, and the terminal device comprises: Communicable information including the telephone number of the terminal device and indicating that data communication can be executed is transmitted to the sub-host device, and the sub-host device is capable of data communication based on the communicable information. The terminal device includes a telephone number data table of the terminal device, generates incoming call waiting terminal information indicating which terminal device is capable of data communication, and the host device receives the incoming call waiting terminal information from the sub-host device, and receives the incoming call waiting terminal information. performs data communication calls the data communication capable terminal device based on the sub-host device, the phosphonic the wait-for-call terminal information After transmitting device, it is configured to delete the call waiting terminal information.
[0009]
According to this, the terminal device transmits communicable information to the sub-host device. Then, the sub-host device transmits the communicable information as incoming call waiting terminal information to the host device. The host device receives the incoming call waiting terminal information from the sub-host device, calls the terminal device in a communicable state, and executes data communication. Therefore, since it is not necessary to make a call for data communication for a terminal device that is not in a communicable state, it is possible to prevent a useless call from being made in advance and to perform data communication efficiently. become.
[0010]
In this case, each communication line is composed of a telephone line , the communicable information includes the telephone number of the terminal device, and the incoming call waiting terminal information is composed of a telephone number data table of the terminal device capable of data communication . Therefore, in a state where each terminal device is capable of data communication, a call based on the telephone number is made directly from the host device to each terminal device based on transmitting each telephone number as information. Data communication is performed. Therefore, data communication through the telephone line is possible without storing the telephone number of the terminal device in advance in the sub-host device and the host device.
[0011]
Further, since the sub-host device is configured to delete the incoming call waiting terminal information after transmitting the incoming call waiting terminal information to the host device , the sub-host device deletes information related to the terminal device except when necessary. As a result, safety and reliability against information leakage can be further improved.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a data communication system in a communication type karaoke apparatus will be described with reference to FIGS. FIG. 1 schematically shows a configuration of a data communication system 11 according to the present embodiment. The data communication system 11 includes a host device 12, a plurality of sub-host devices 13, and a karaoke device 14 that is a large number of terminal devices connected to each other via a telephone line 15 that is a communication line.
[0013]
The host device 12 is mainly composed of a computer, and distributes karaoke performance data of a new song, collects data on the operating status of the karaoke device 14, and the like. The sub-host device 13 is also composed mainly of a computer, and a plurality of sub-host devices 13 are installed nationwide for each regional area as a relay base between the host device 12 and a plurality of karaoke devices 14.
[0014]
Although not shown in detail, the karaoke device 14 as a terminal device includes a control device for controlling karaoke performance and data communication, a communication device for performing data communication, a number of communication devices, and the like. A hard disk device or the like for storing karaoke performance data (MIDI data and lyrics data) of a song is provided. Further, the main body includes an input device including an operation panel and a remote controller for a user to make a request, a sound source for outputting karaoke performance sound from a speaker via an amplifier based on the karaoke performance data, and background image reproduction A CD player, a display for displaying lyrics together with a background image, and the like are connected to form a karaoke performance system as a whole.
[0015]
As described above, when the karaoke performance data such as a new song is produced, the host device 12 transmits the karaoke performance data to each karaoke device 14 in a predetermined time zone at midnight, for example. Is performed by data communication via the telephone line 15.
[0016]
At this time, as will be described in detail in the description of the flowchart below, in performing data communication, each karaoke device 14 can communicate with each other according to its software configuration. Is transmitted to the sub-host device 13, and the sub-host device 13 generates incoming call waiting terminal information indicating which karaoke device 14 is capable of data communication based on the communicable information. Incoming call waiting terminal information is received from 13, and the karaoke apparatus 14 capable of data communication is called based on the incoming call waiting terminal information to execute data communication.
[0017]
In the present embodiment, each karaoke device 14 transmits data of its own telephone number as communicable information. Then, the sub-host device 13 generates and stores a telephone number data table including a set of the telephone number data as incoming call waiting terminal information. Furthermore, in this embodiment, the sub-host device 13 is configured to delete the storage of the telephone number data table after transmitting the telephone number data table to the host device 12. The host device 12 is configured to call the karaoke device 14 based on the telephone number data table.
[0018]
Next, the operation of the above configuration will be described with reference to FIGS. The flowcharts of FIGS. 2, 3, and 4 show the procedure of processes executed by the karaoke device 14, the sub-host device 13, and the host device 12 when performing data communication (delivery of karaoke performance data by the host device 12). Yes.
[0019]
First, the flowchart of FIG. 2 shows a processing procedure executed by each karaoke apparatus 14. That is, first, it is determined whether or not it is time to perform data communication (step S21), and when it is in a state where data communication is to be performed (Yes), next, is it possible to execute data communication? It is determined whether or not (step S22). In this case, if the telephone line 15 is in use (during a telephone call), the data communication cannot be executed (No in step S22), and the telephone line 15 is waited to be usable.
[0020]
When data communication can be executed (Yes in step S22), a call is made by calling the sub-host device 13 (step S23), and communication is possible to the effect that data communication is possible to the sub-host device 13. The data of its own telephone number is transmitted as information (step S24). Thereafter, the communication task is set in a standby state (step S25), and a call from the host device 12 is waited (step S26). When a call is received from the host device 12 (Yes in step S26), the line is connected to receive data from the host device 12 (step S27).
[0021]
Next, the flowchart of FIG. 3 shows a processing procedure executed by the sub-host device 13. That is, if there is a call from the karaoke device 14 or the host device 12 (Yes in step S31), it is next determined whether the call is from the karaoke device 14 (terminal) side or the host device 12 side (step). S32).
[0022]
When the call is from the karaoke device 14 side, the telephone number data as the communicable information of the karaoke device 14 is received (step S33), and then the telephone number data table T as the incoming call waiting terminal information (FIG. 1). Reference) is created and stored (step S34). As schematically shown in FIG. 1, this telephone number data table T is composed of a collection of telephone number data, and when there is a new reception, the telephone number data is added each time. Yes.
[0023]
On the other hand, when there is a call from the host device 12, the current incoming call waiting terminal information, that is, the telephone number data table T is transmitted to the host device 12 (step S35). After the transmission, the telephone number data stored in the telephone number data table T is erased (step S36).
[0024]
The flowchart in FIG. 4 shows a processing procedure executed by the host device 12. That is, first, it is determined whether or not data communication is to be performed (step S41). When data communication is to be performed (Yes), the sub-host device 13 is called (step S42), and the telephone number data table is set. If there is T (Yes in step S43), the telephone number data table T as the incoming call waiting terminal information currently stored in the sub-host device 13 is received (step S44).
[0025]
Next, the karaoke device 14 is called based on the telephone number data in the received telephone number data table T (step S46), and karaoke performance data is transmitted to the karaoke device 14 (step S47). The transmission of the karaoke performance data is sequentially performed for all the karaoke devices 14 stored in the telephone number data table T. When the data transmission is completed, that is, when there is no karaoke device 14 waiting for an incoming call (Yes in step S45). ), It returns to step S41 again. At this time, even in the host device 12, the telephone number data is deleted after transmission.
[0026]
With the configuration as described above, data communication between the host device 12 and each karaoke device 14 is performed. Finally, the host device 12 receives telephone number data from all the sub-hosts 13, and all the karaoke devices 14. The karaoke performance data is transmitted to. At this time, in performing data communication with each karaoke device 14, the host device 12 calls the karaoke device 14 in a communicable state, and to the karaoke device 14 that is not yet communicable. Since there is no need to make a call for data communication, it is not necessary to repeat line connection retries.
[0027]
Therefore, according to the present embodiment, unlike the conventional case where retrying must be continued during data communication, it is possible to prevent unnecessary calls and improve communication efficiency. It can be done. In particular, in the present embodiment, the communicable information from the karaoke device 14 is configured to include the data of its own telephone number, so that the telephone number of the karaoke device 14 is previously set in the sub-host device 13 and the host device 12. Even if it is not stored, data communication through the telephone line 15 becomes possible, and the data of the telephone number is erased except when necessary in the sub-host device 13, so that safety and reliability against information leakage are improved. It is something that can be done. Of course, in the host device 12, the telephone number data is erased except when necessary.
[0028]
The present invention is not limited to the embodiments described above, for example, not limited to the communication karaoke system, etc. can be applied to various communication systems, appropriately modified without departing from the gist Can be implemented.
[0029]
【The invention's effect】
As is apparent from the above description, according to the data communication system of the present invention, sub-host devices connected to each other via a communication line made up of a telephone line are provided, and the terminal device includes the telephone number of the terminal device. The communicable information is transmitted to the sub-host device, and the sub-host device transmits the incoming call waiting terminal information including the telephone number data table of the terminal device capable of data communication to the host device. Since the sub-host device transmits the incoming call waiting terminal information to the host device and then deletes the incoming call waiting terminal information , the sub host device transmits the incoming call waiting terminal information through the communication line between the host device and the terminal device. when performing data communication, eliminating the retry operation of connecting lines can be improved communication efficiency, furthermore, against the leakage of information That safety is reliable as it exhibits an excellent practical effect can be further improved.
[Brief description of the drawings]
FIG. 1 is a block diagram schematically showing a configuration of a data communication system according to an embodiment of the present invention. FIG. 2 is a flowchart showing a processing procedure executed by each karaoke apparatus during data communication. Flowchart showing processing procedure executed by sub-host device during data communication [FIG. 4] Flowchart showing processing procedure executed by host device during data communication [FIG. 5] FIG.
In the drawing, 11 is a data communication system, 12 is a host device, 13 is a sub-host device, 14 is a karaoke device (terminal device), 15 is a telephone line (communication line), and T is a telephone number data table.

Claims (1)

A data communication system that connects a host device and a plurality of terminal devices with a communication line comprising a telephone line , and performs data communication between the host device and each terminal device,
Providing a sub-host device connected to the host device and a plurality of terminal devices by a communication line comprising a telephone line ;
The terminal device transmits communicable information to the sub-host device that includes the telephone number of the terminal device and can execute data communication.
The sub-host device, based on the communicable information, generates a terminal information waiting terminal indicating which terminal device is capable of data communication comprising a telephone number data table of a terminal device capable of data communication;
The host device receives incoming call waiting terminal information from the sub-host device, executes a data communication by calling a terminal device capable of data communication based on the incoming call waiting terminal information ,
The sub-host device is configured to delete the incoming call waiting terminal information after transmitting the incoming call waiting terminal information to the host device .

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