JPH10276282A - Data communication method and data communication system - Google Patents

Abstract

(57) [Problem] To provide a data communication system in which it is not necessary to create a distribution data list for each terminal device and data management is easy. A karaoke host device adds connection information to karaoke data, and transmits the karaoke data to a karaoke terminal device starting from the latest karaoke data. These pieces of link information indicate karaoke data to be transmitted next by the karaoke host apparatus. When the karaoke terminal apparatus receives the karaoke data, the karaoke terminal apparatus determines whether the karaoke data indicated by the link information has been received. If not received (step S2), the designated karaoke data is requested to be distributed to the karaoke host device (step S3).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data communication method and a data communication system for distributing distribution data stored in a center device to a terminal device.

[0002]

As an example of the data communication system, there is a communication karaoke system. This communication karaoke system has a configuration in which a plurality of karaoke terminal devices are connected to a karaoke host device via a telephone line. Each karaoke terminal device receives and stores karaoke data transmitted from the karaoke host device through the telephone line. Save to device. Then, when there is a request from the user, karaoke data corresponding to the request is read from the storage device, and karaoke performance is performed based on the karaoke data.

FIG. 6 shows a conventional data communication method in the above-mentioned communication karaoke system. Here, a distribution data list is written in the distribution management table of the karaoke host device, and data communication between the karaoke host device and the karaoke terminal device is performed based on the distribution data list in the following (1) to (5). Is done as follows. (1) The karaoke terminal device transmits a device number (for example, “00000001”) to the karaoke host device.

[0004] (2) The karaoke host device has the device number "00"
000001 "to the karaoke terminal device, the distribution data list" DATA-0
01, DATA-002, DATA-003, DATA-004, DATA-005, DATA-006 ''
Send

(3) The karaoke terminal device requests distribution data “DATA-001” based on the distribution data list.

(4) If the karaoke host device has the device number "00"
Distribution data "DATA-001" to the karaoke terminal of "000001"
Send

(5) The operations (3) and (4) are repeated between the karaoke terminal device and the karaoke host device. And
The karaoke terminal device requests the last distribution data “DATA-006” from the karaoke host device, and the communication ends when it is received from the karaoke host device.

However, in the above-described conventional technique, the karaoke host device needs to create a distribution data list for each karaoke terminal device and store the type of distribution data and the distribution order. Because of this, data management is cumbersome,
In particular, it becomes difficult to cope with an increase in the number of connected karaoke terminals. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a data communication method and a data communication system in which it is not necessary to create a distribution data list for each terminal device and data management is easy. .

[0009]

According to a first aspect of the present invention, there is provided a data communication method for distributing distribution data stored in a center device to a terminal device, wherein the center device transmits the distribution data to the terminal device. , Adding link information indicating distribution data to be transmitted next to the distribution data,
When the terminal device receives the distribution data, the terminal device determines whether the distribution data specified by the connection information has been received, and if not, requests the center device to distribute the specified distribution data to the center device. Has features.

According to a second aspect of the present invention, there is provided a data communication system for distributing distribution data stored in a center device to a terminal device, wherein when the center device transmits distribution data to the terminal device, the next transmission is performed. The connection information indicating the data is added to the distribution data, and when the terminal device receives the distribution data, it is determined whether the distribution data specified by the connection information has been received. This is characterized in that the distribution data is requested to be distributed to the center device.

According to the first and second means, when the distribution data specified by the connection information has not been received, the terminal device requests the center device to distribute the specified distribution data. Therefore, the distribution data is continuously distributed from the center device to the terminal devices until it is determined that the designated distribution data has been received, so that it is not necessary to create a distribution data list for each terminal device.

According to a third aspect of the present invention, in the data communication system, a karaoke host device storing karaoke data constitutes a center device, and a terminal device comprises a karaoke terminal device to which karaoke data is distributed from the karaoke host device. It is characterized by where it is. According to the above means, in distributing the karaoke data from the karaoke host device to the karaoke terminal device, the request and distribution of the karaoke data are repeated based on the connection information,
The karaoke host device does not need to create a karaoke data list for each karaoke terminal device.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIG.
A description will be given with reference to FIG. In this embodiment, the present invention is applied to a data storage type communication karaoke system. First, in FIG. 3, the communication karaoke system includes a karaoke host device 1 corresponding to a center device,
It comprises a plurality of karaoke terminal devices 2 corresponding to terminal devices. Each karaoke terminal device 2 is connected to the karaoke host device 1 via a public line network (= telephone line) 3. Hereinafter, the electrical configuration of the karaoke host device 1 and each karaoke terminal device 2 will be described.

<Regarding Karaoke Terminal Device 2> The terminal control device 4 of FIG. 4 is mainly composed of a microcomputer, and includes a CPU 4a, a ROM 4b, a RAM 4c,
It has an input / output port (I / O port) 4d and the like. A keyboard 5 is connected to the terminal control device 4.
When the keyboard 5 is operated, various command signals such as a music selection command signal are input to the terminal control device 4.

The terminal controller 4 is provided with a remote controller 6. When the remote controller 6 is operated, a command signal similar to that at the time of operating the keyboard 5 is transmitted from the remote controller 6. A remote control receiving unit 7 is connected to the terminal control device 4. The command signal transmitted from the remote controller 6 is received by the remote control receiving unit 7 and then output from the remote control receiving unit 7 to the terminal control device 4. Is done.

A display unit 8 is connected to the terminal control unit 4, and the terminal control unit 4 displays the contents of commands from the keyboard 5 and the contents of commands from the remote controller 6 on the display unit 8.

The terminal control device 4 is connected to a terminal storage device 9 composed of a hard disk or the like. The terminal storage device 9 stores a plurality of music data together with the lyrics data. When the terminal control device 4 receives a music selection command signal from the keyboard 5 or the remote controller 6, the music data and the music data corresponding to the music selection command signal are received. The lyrics data is read from the terminal storage device 9. The music data and the lyrics data of each group correspond to karaoke data.

A monitor 11 is connected to the terminal control device 4 via a display circuit device 10.
Displays the lyrics on the monitor 11 with the drive control of the display circuit device 10 based on the lyrics data. Also,
A monitor 11 is connected to the terminal control device 4 via a video playback device 12. The drive control of the video playback device 12 causes the terminal control device 4 to display a background moving image corresponding to the lyrics on the monitor 11. To be displayed.

A MIDI sound source 13 is connected to the terminal control device 4, and an amplifier 14 is connected to the MIDI sound source 13. A speaker 15 is connected to the amplifier 14, and the terminal control device 4 drives and controls the MIDI sound source 13 based on the music data read from the terminal storage device 9, thereby causing the speaker 15 to sound and karaoke. Perform the performance. Further, a microphone 16 is connected to the amplifier 14. When a singing voice is emitted toward the microphone 16 while watching the lyrics on the monitor 11, the performance and the singing voice are mixed by the amplifier 14 and output from the speaker 15.

A terminal transmitting / receiving device 17 is connected to the terminal control device 4. The terminal transmission / reception device 17 is connected to the public line network 3, and the terminal control device 4 sends a distribution command signal (= delivery request) from the terminal transmission / reception device 17 as the terminal transmission / reception device 17 is driven and controlled. Send.

<Regarding Distribution Host Apparatus 1> The distribution control apparatus 18 shown in FIG.
18c, an input / output port (I / O port) 18d and the like (mainly composed of a microcomputer), and a delivery transmission / reception device 19 is connected to the delivery control device 18. The distribution transmission / reception device 19 is connected to each terminal transmission / reception device 17 via the public line network 3, receives a distribution command signal transmitted from each terminal transmission / reception device 17, and outputs the received signal to the distribution control device 18. .

The distribution control device 18 is connected to a distribution storage device 20 such as a hard disk. The distribution storage device 20 stores a plurality of music data together with lyrics data. When the distribution control device 18 receives a distribution command signal from the distribution transmission / reception device 19, the distribution control device 18 transmits predetermined music data and Read the lyrics data,
The transmission / reception device 19 transmits the data to a predetermined terminal transmission / reception device 17 via the public network 3. Then, the predetermined terminal control device 4 receives the plurality of music data and lyrics data transmitted from the distribution transmission / reception device 19 via the terminal transmission / reception device 17, and writes the received data into the terminal storage device 9. The music data and lyrics data of each group correspond to karaoke data (= distribution data).

The distribution control device 18 includes an external input device 21
When the keyboard 22 is operated, an external command signal corresponding to the operation content of the keyboard 22 is provided to the distribution control device 18 via the external input device 21. Further, a monitor 24 is connected to the distribution control device 18 via a display circuit device 23. The distribution control device 18 controls the display circuit device 23 by driving and controlling the system usage status and the keyboard 22. Is displayed on the monitor 24.

Next, the operation of the above configuration will be described.
This operation is described between the terminal control device 4 having the device number “00000003” and the distribution control device 18 in the data communication performed between the plurality of terminal control devices 4 and the distribution control device 18. This is an example of data communication, and the flowchart in FIG. 1 shows the control contents of the terminal control device 4 with the device number “00000003”.

When the device number "00000003" is transmitted from the terminal control device 4 to the distribution control device 18 (communication in FIG. 1 starts), the distribution control device 18 receives the device number "00000003" and then transmits the latest data. The latest data information indicating “DATA-006” is transmitted to the terminal control device 4 having the device number “00000003”. Then, the terminal control device 4 executes step S in FIG.
In step 1, the latest data information is received, and the process proceeds to step S2. Note that the latest data refers to the latest karaoke data externally given to the karaoke host device 1 with the release of a new song or the like.

When the terminal controller 4 proceeds to step S2, it determines whether the latest karaoke data "DATA-006" has been received. FIG. 2C shows each terminal control device 4.
Are not listed (not showing the data layout of the ROMs 4a and 18a and the RAMs 4b and 18b), and as shown in the figure, the terminal control device 4 of the device number "00000003" transmits the karaoke data " DA
Since “TA-006” has not been received, “NO” is determined in the step S2 in FIG. 1, and the process shifts to the step S3 to transmit a distribution request to the distribution control device 18. Then, the distribution control device 1
8 transmits the latest karaoke data “DATA-006” to the terminal control device 4 with connection information added thereto.

When the terminal control device 4 receives the karaoke data "DATA-006" from the distribution control device 18 in step S4, the process proceeds to step S5 and the karaoke data "DATA-0"
The connection information added to "06" is extracted. This consolidation information
The karaoke data “DATA
-005 "(= instructing the next karaoke data" DATA-005 "to be received by the terminal control device 4). When the terminal control device 4 extracts the link information, the terminal control device 4 proceeds to step S2. It returns and determines whether or not the karaoke data “DATA-005” indicated by the link information has been received.

In this case, as shown in FIG. 2C, since the karaoke data "DATA-005" has not been received, the terminal control device 4 proceeds to step S3 in FIG. Send a distribution request to. Then, the distribution control device 1
8 adds the link information to the karaoke data “DATA-005” and transmits it to the terminal control device 4. The link information indicates the karaoke data “DATA-004” to be transmitted next.

When the terminal control device 4 receives the karaoke data "DATA-005" in step S4 in FIG.
Then, the process goes to step 5 to extract connection information from the karaoke data "DATA-005". Then, the process returns to step S2, and it is determined whether the karaoke data "DATA-004" indicated by the connection information has been received. In this case, as shown in FIG. 2B, since the terminal control device 4 having the device number “00000003” has received the karaoke data “DATA-004”, the step S
The communication is terminated by determining "YES" in 2. FIG. 2A schematically shows the above series of operations.

According to the above embodiment, when distributing karaoke data from the karaoke host apparatus 1 to the karaoke terminal apparatus 2, the latest karaoke data "DATA-006" is replaced with old karaoke data "DATA-005" and "DATA-004". ... Are sequentially transmitted, and the link information is added to the karaoke data. When the karaoke data specified by the connection information has not been received, the karaoke terminal device 2 requests the karaoke host device 1 to distribute the karaoke data.

Therefore, the karaoke data is continuously distributed from the karaoke host device 1 to the karaoke terminal device 2 until it is determined that the karaoke data specified by the connection information has been received. Therefore, the karaoke host device 1 only needs to manage the latest karaoke data, and there is no need to create a distribution data list for each karaoke terminal device 2. As a result, the management of the karaoke data is simplified, so that even when the number of connected karaoke terminals 2 is increased, it can be easily handled.

In the above embodiment, the present invention is applied to a communication karaoke system. However, the present invention is not limited to this. For example, when the present invention is applied to a data communication system in which distribution data is not externally provided to a center device, the concept of the latest data described above disappears. It is preferable that the distribution data is transmitted in accordance with the distribution order.

[0033]

As is apparent from the above description, the data communication method and data communication system of the present invention have the following effects. According to the first and second aspects, when the distribution data specified by the connection information has not been received,
The terminal device requests distribution of distribution data to the center device. This simplifies the management of distribution data, and can easily cope with a case where the number of connected terminal devices increases. According to the third aspect of the present invention, since the present invention is applied to the communication karaoke system, data management of the karaoke host device becomes particularly easy.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of the present invention (flowchart for explaining control contents of a terminal control device);

FIG. 2 is a diagram for explaining a data communication method;

FIG. 3 is a diagram schematically showing an overall configuration.

FIG. 4 is a block diagram showing an electrical configuration of the karaoke terminal device.

FIG. 5 is a block diagram showing an electrical configuration of the karaoke host device.

FIG. 6 is a diagram corresponding to FIG. 2 showing a conventional example.

[Explanation of symbols]

1 is a karaoke host device (center device), 2 is a karaoke terminal device (terminal device), 4 is a terminal control device, and 18 is a distribution control device.

Claims (3)

[Claims] 1. A data communication method for distributing distribution data stored in a center device to a terminal device, wherein, when transmitting the distribution data to the terminal device, the center device designates distribution data to be transmitted next. When the terminal device receives the distribution data, the terminal device determines whether the distribution data specified by the connection information has been received, and if not, the terminal device adds the specified distribution data to the distribution data. A data communication method, wherein a distribution request is made to the center device. 2. A data communication system for distributing distribution data stored in a center device to a terminal device, wherein the center device transmits distribution data to the terminal device, wherein the center device designates distribution data to be transmitted next. When the terminal device receives the distribution data, the terminal device determines whether the distribution data specified by the connection information has been received, and if not, the terminal device adds the specified distribution data to the distribution data. A data communication system, wherein a distribution request is made to the center device. 3. The center device is constituted by a karaoke host device in which karaoke data is stored, and the terminal device is constituted by a karaoke terminal device to which karaoke data is distributed from the karaoke host device. The data communication system according to claim 2.