JPH11184768A - System for distributing data and method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To distribute music data within an accepting time by using the spare time of distribution even when a processing for distributing music data to a KARAOKE terminal equipment is abnormally ended. SOLUTION: In this data distribution method, data are distributed from a server device through a line to plural terminal equipment. In this case, the data are distributed according to a distribution schedule constituted of a data distribution time zone from the server device to the plural terminal equipment and a necessary predicted time necessary for distribution, and when the distribution processing is abnormally ended, the data are distributed again to the terminal equipment to which the distribution processing is abnormally ended in the spare time zone of distribution obtained according to the distribution schedule.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
IDI (Musical InstrumentDig)
a data distribution system and a data distribution method for periodically distributing music data to a plurality of terminal devices via a public line from a server device having a database for storing it as ital Interface data (hereinafter referred to as “music data”); In particular, the present invention relates to a data distribution system and a data distribution method for distributing music data to a plurality of karaoke terminal devices via a public telephone line.

[0002]

2. Description of the Related Art In a communication karaoke system, music data is distributed from a server device storing music data to a plurality of karaoke terminals via a public line such as a public telephone line.

FIG. 5 is a schematic configuration diagram of a communication karaoke system and a server device that distributes music data to a karaoke terminal device.

In FIG. 1, reference numeral 10 denotes a server device for distributing music data to a karaoke terminal device. The server device 10 includes a CPU 11 for controlling and controlling the server device 10;
A database 12 for storing music data, a modem 13 for transmitting music data of the database 12 to a karaoke terminal device via a public line such as a public telephone line, and distribution of music data to the karaoke terminal devices 20-1 to 20-n (Hereinafter, referred to as a “distribution schedule”).

On the other hand, the karaoke terminal device 20 is connected to a public line such as a public telephone line, and the karaoke terminal device 20 has a CP for controlling and controlling the karaoke terminal device 20.
U21, storage means 22 for storing music data transmitted from the server device 10, and a modem 23 for receiving music data transmitted from the database 12 of the server device 10 via a public line such as a public telephone line. I have.

Here, the storage means 14b of the server device 10
Is a karaoke terminal device 20-1, 20- for music data.
When data is distributed to 2,..., 20-n, the distribution schedule of the music data is held in advance. In particular,
As shown in Table 1, the karaoke terminals 20-1 to 20-
n, "delivery time zone", "delivery data amount",
And the “distribution required estimated time” are determined, and the server device 10 sequentially distributes the music data to the karaoke terminal devices according to the distribution schedule.

[0007]

[Table 1]

[0008]

However, while music data is being distributed from the server apparatus 10 to the plurality of karaoke terminal apparatuses 20-1 to 20-n, the line quality deteriorates due to the use of the public line. The connection between the server device 10 and the modems of the karaoke terminal devices 20-1 to 20-n is cut off,
The distribution process may end abnormally. FIG. 6 shows a case where music data is distributed to each of the karaoke terminals 20-1 to 20-8 according to a distribution schedule, and the distribution processing of the karaoke terminals 20-1 to 20-4 ends abnormally. . 6 in FIG. 6 indicates that the distribution process has ended abnormally.

In the conventional data distribution system, since the server device 10 is determined to sequentially distribute to a plurality of karaoke terminal devices, music data is sequentially distributed according to a distribution schedule, and the last karaoke terminal device is transmitted. Then, the distribution process of the music data is performed again to the karaoke terminal device abnormally terminated, or the distribution process is performed again to the same karaoke terminal device immediately after the abnormal termination.

At this time, if the above-described processing is performed, the music data cannot be received within the distribution reception time predetermined for each karaoke terminal device (see FIG. 6). There is a problem that a terminal device occurs.

[0011]

According to the present invention, there is provided a data distribution method for distributing data from a server device to a plurality of terminal devices via a line. As a result of distributing the data according to a delivery schedule including a delivery time zone and a required estimated time required for delivery, if the delivery process is abnormally terminated, the data is obtained for the abnormally terminated terminal device according to the delivery schedule. The method is characterized in that the data is distributed again in a vacant time zone of distribution.

Further, the data distribution system of the present invention is a communication system comprising: a server device for distributing data; and a plurality of terminal devices for receiving data distributed from the server device via a line. The device stores a delivery schedule consisting of a data delivery time zone to the plurality of terminal devices and a predicted time required for the delivery, and the server device detects that the process of delivering the data to the terminal device is abnormal. When the process is completed, a vacant time zone for distribution is obtained in accordance with the delivery schedule, and the data is delivered again to the abnormally terminated terminal device in the vacant time zone.

The data is music data composed of MIDI.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

An apparatus for realizing the data distribution method of the present invention is basically the same as that shown in FIG. 5, and a description of a configuration having the same function will be omitted.

In the embodiment of the present invention, the server device 10
The case where one modem distributes music data to a plurality of karaoke terminals will be described.

Here, the point that the present invention differs from the prior art is the "procedure of distribution schedule" stored in the storage means 14a. Further, as shown in Table 2, the storage means 14a is provided with a "table pointer" pointing to each karaoke terminal device of the "distribution schedule".

[0018]

[Table 2]

Further, the storage means 14a has a FIFO
(FIRST IN FIRST OUT) type retransmission queue memory is provided, and when queuing a request to retransmit music data to the karaoke terminal device, the CPU
Reference numeral 11 denotes a configuration in which the karaoke terminal device to be retransmitted writes the value of the “table pointer” in Table 2 into the retransmission queue memory.

Further, the CPU 11 has a function of incrementing a "table pointer" so as to sequentially distribute music data to the karaoke terminal devices 20-1 to 20-n in Table 2.

FIGS. 2 and 3 are flowcharts for realizing the data distribution method of the present invention.

In FIG. 2, when distributing music data, in step S1, the CPU 11 initializes a "table pointer" shown in Table 2 so as to point to the karaoke terminal device 20-1. In step S2, the CPU 11 initializes the content of the retransmission queue memory so that it becomes empty.

In step S3, the CPU 11 reads the record of the delivery schedule pointed to by the table pointer in Table 2 and reads the records at this time as "delivery time zone", "distribution data amount", and "predicted required distribution time". It is. The “delivery time zone” includes a disclosure time and an end time.

Next, in step S4, the current time is subtracted from the start time of the distribution of the music data, and the time is defined as "free time".

In step S5, it is determined whether or not there is a free time. If there is no free time, the process proceeds to step S6, while if there is a free time, the process proceeds to step S11.

In step S6, the music data is distributed to the karaoke terminal device indicated by the table pointer in Table 2. In step S7, an error occurs during distribution, and it is determined whether or not all of the music data has been transmitted. If no error occurs, the process proceeds to step S9. If an error occurs, the process proceeds to step S8. move on. In step S8, the CPU 11
Adds the “table pointer value” to the end of the retransmission queue memory of the storage unit 14a for the karaoke terminal device in which the distribution error has occurred.

In step S9, the CPU 11 increments the table pointer by one and proceeds to step S10.
In step S10, if it is not completed, the process returns to step S3 to continue the distribution process of the music data to the next karaoke terminal device.

In step S11, the storage unit 14
A search is performed to determine whether the value of the pointer in Table 2 corresponding to the karaoke terminal device requiring retransmission exists in the retransmission queue memory of a. This will be specifically described with reference to FIG.

In step S110 of FIG. 3, the queue pointer is set so as to point to the head of the retransmission queue memory of the storage means 14a.

In step S111, it is determined whether or not all the contents of the retransmission queue memory of the storage means 14a have been checked. If all of the contents have not been checked, the process proceeds to step S112.
Proceeding to 3, the CPU 11 returns to the CPU 11 in step S113 that there is no one that meets the conditions.

In step S112, a record of the distribution schedule corresponding to the value of the table pointer in Table 2 indicated by the queue pointer is read.

In step S114, the available time is compared with the estimated distribution time. If the available time is shorter than the estimated required distribution time, the process proceeds to step S116. If the available time is longer than the estimated required distribution time, the process proceeds to step S115. .

Next, in step S115, the end time is compared with [current time + distribution required estimated time]. If the end time is smaller than [current time + distribution required predicted time], the process proceeds to step S116, while the end time is determined. If it is equal to or greater than [current time + distribution required predicted time], the process proceeds to step S117.

In step S117, step S11
If the requirements of step 4 and step S115 are satisfied, the value of the table pointer in Table 2 of the karaoke terminal device in the retransmission queue memory of the storage means 14a is removed. Step S118
Then, it returns to the CPU 11 that there is something that meets the conditions,
Thereafter, the process returns to step S12 in FIG.

In step S12, it is determined whether or not there is one that satisfies the condition in the processing in step S118. If there is no one that satisfies the condition, the process proceeds to step S14, and after maintaining the waiting state, the process proceeds to step S6. On the other hand, if there is one that satisfies the condition, the process proceeds to step S13.

In step S13, the music data is retransmitted to the karaoke terminals meeting the conditions. In step S15, an error occurs during distribution, and it is determined whether or not all of the music data has been transmitted. If no error occurs, the process returns to step S4. If an error occurs, the process returns to step S16. move on. In step S16,
As in step S8, the CPU 11 stores the karaoke terminal device in which the distribution error has occurred in the storage unit 14a.
Is added to the end of the retransmission queue memory of Table 2.

As described above, according to the present invention, as shown in FIG. 4, even when the distribution process of the music data ends abnormally using the idle time, the music data can be distributed.

As means for detecting that the distribution process of the music data has been abnormally terminated by the server device 10, (a)
If the karaoke terminal device normally receives the music data, an acknowledgment signal is returned from each karaoke terminal device to the server device 10. If the signal is not transferred to the server device 10 within a predetermined time, the distribution process is performed. It is conceivable that the CPU 11 is provided with a means for detecting the abnormal termination, or (b) the modem 13 detects that the data communication between the modem 13 and the modem 23 has been disconnected by the interruption of the carrier signal. .

In the embodiment of the present invention, when one modem of the server device 10 distributes music data to a plurality of karaoke terminals, the process when the distribution process of the music data ends abnormally has been described. However, the present invention is not limited to this, and the CPU 11 may distribute the music data via another modem when there is an idle time in the distribution processing of the music data in another modem.

[0040]

As is apparent from the above description, according to the present invention, even when the distribution process of the music data to the karaoke terminal device ends abnormally, by utilizing the available time of distribution, This has the effect that music data can be distributed within the reception time.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a communication karaoke system of the present invention and a server device that distributes music data to a karaoke terminal device.

FIG. 2 is a flowchart for realizing the distribution data method of the present invention.

FIG. 3 is a flowchart for realizing the distribution data method of the present invention.

FIG. 4 shows a karaoke terminal device 20-1 to 20- 1 according to the present invention.
This shows a case where music data is distributed to the karaoke terminal 20-8 according to the distribution schedule, and the distribution processing of the karaoke terminal devices 20-1 to 20-4 ends abnormally.

FIG. 5 is a schematic configuration diagram of a conventional communication karaoke system and a server device that distributes music data to a karaoke terminal device.

FIG. 6 shows a conventional karaoke terminal device 20-1 or 20-2.
This shows a case where the music data is distributed to the karaoke terminals 0-8 according to the distribution schedule, and the distribution processing of the karaoke terminal devices 20-1 to 20-4 ends abnormally.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Server apparatus 11 ... CPU 12 ... Database 13 ... Modem 14a ... Storage means 20-1 to 20-8 ... Karaoke terminal apparatus 21 ... CPU 22 ... Storage means 23 ... Modem

Claims (4)

[Claims] 1. A data distribution method for distributing data from a server device to a plurality of terminal devices via a line, comprising: a data distribution time zone from the server device to the plurality of terminal devices; and an estimated time required for the distribution. As a result of distributing the data according to the delivery schedule consisting of, if the delivery process ends abnormally, the abnormally ended terminal device is determined according to the delivery schedule,
A data delivery method, wherein the data is delivered again during a free time slot of the delivery. 2. The data distribution method according to claim 1, wherein the data is music data composed of MIDI. 3. A data distribution system comprising: a server device for distributing data; and a plurality of terminal devices for receiving data distributed from the server device via a line, wherein the server device includes the plurality of terminals. A delivery time zone of data to the device, and a delivery schedule including a predicted time required for the delivery, and the server device stores
When the process of distributing the data to the terminal device ends abnormally, an empty time zone for distribution is obtained according to the distribution schedule, and the data is again delivered to the abnormally terminated terminal device in the empty time period. Characteristic data distribution system. 4. The data distribution system according to claim 3, wherein the data is music data composed of MIDI.