JP2975854B2 - Music data communication method in karaoke system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of receiving music data such as lyrics data, character image data, and karaoke music data (MIDI) and storing the same in a karaoke terminal device.

[0002]

2. Description of the Related Art As a music data communication method in a conventional karaoke system, there is a technique described in Japanese Patent Laid-Open No. 4-67381.

According to the technique disclosed in this publication, a song number header is added to each karaoke music unit composed of digital signals, and a plurality of karaoke music are transmitted cyclically via a public line as data strings. A host computer connected to the public line terminal device and having a karaoke terminal device provided with a digital sound source driven by the digital signal, the karaoke terminal device having a main storage device for storing a large number of karaoke music And a parallel receiving memory for storing as a buffer for each unit data of karaoke music is provided, and the unit data is alternatively stored in the receiving memory, and the stored music number of the main storage device and the received memory are stored in the receiving memory. The stored music numbers are collated with each other, and are saved in the main storage device only when the numbers do not match.

Thus, a new song is received in the daytime when the utilization rate of the karaoke terminal device is low, and the new song is stored in the main memory of the karaoke terminal device.

[0005] At this time, a pause period of 40 KB for information of one song from the center and 200 ms for the next song is provided.
The information of the next song is 40 KB, a pause of 200 ms is set, the news information is 500 B, and the next 1
The song information is cyclically transmitted during a pause period of 40 KB and 200 ms. That is, as shown in FIG. 14A, the format of the data used in the music data communication method in the karaoke system of the conventional example is shown in FIG.
The timing of switching between songs is determined by a pause period of 0 ms.

[0006]

However, as of now, karaoke terminals are used in nighttime shops such as snacks and in daytime shops such as coffee shops. Opening hours. Therefore, even if data of a new song is transmitted during the daytime when the utilization rate of the karaoke terminal device is low, there is a high possibility that the timing for writing to the main memory of the karaoke terminal device cannot always be easily obtained. That is, it is assumed that any one of the karaoke terminal devices is operating.

[0007] Further, if broadcasting is performed from the center to many karaoke terminals nationwide, the communication cost becomes high. Therefore, if a repeater is installed in a local area and transmitted to each karaoke terminal device from there, the communication cost is reduced. In particular, if the mailbox function is used for transmission and reception of music data, transfer at 256 locations can be performed on one relay station side.

On the other hand, when outputting the music data via a telephone line, it is desirable to use the music data when the line usage fee of the telephone line is low. Further, in order to transmit data wirelessly using artificial hygiene, it is desirable that the ionosphere be stable during a time period such as at night.

However, in the music data communication method in the conventional karaoke system, in order to avoid a mistake between the end code and the start of the heading, the timing of switching between songs is set by a 200 ms pause period. There was a waste of time in the transmission of the transmission. In particular, to reduce communication costs, 20
The 0 ms pause was not negligible.

Accordingly, an object of the present invention is to provide a music data communication method in a karaoke system capable of efficiently communicating music data to a karaoke terminal device.

[0011]

A music data communication method in a karaoke system according to claim 1 distributes music data from a center to each karaoke terminal device by communication, and distributes the distributed music data to each karaoke terminal device. In a music data communication method in a karaoke system for storing music data, a code between music data to be distributed is interposed with a dummy code of n (n is an integer of 1 or more) bytes.

According to a second aspect of the present invention, there is provided a music data communication method in a karaoke system in which music data is distributed from a center to each karaoke terminal device by communication, and the distributed music data is stored in each karaoke terminal device. In the data communication method, a code between distributed music data and music data is formed by interposing a dummy code irrelevant to n (n is an integer of 1 or more) byte heading data.

According to a third aspect of the present invention, there is provided a music data communication method in a karaoke system, wherein music data is distributed from a center to each karaoke terminal device by communication, and the distributed music data is stored in each karaoke terminal device. In the data communication method, the number of bytes of a code between music data to be distributed is set to be equal to or larger than the number of bytes of heading data for identifying the head of the distributed music data.

[0014]

According to the first aspect, the music data distributed from the center to the respective karaoke terminals by communication is set as a dummy code of n (n is an integer of 1 or more) bytes between the music data. Even if the final code matches the head start code, the data is distinguished by a dummy code that can distinguish the final code from the head code.

According to the second aspect, the music data distributed from the center to the respective karaoke terminals by communication is converted into a code between the music data and n (n is an integer of 1 or more) heading data. There is no dummy code, and even if the final code of all songs matches the heading start code, the data is distinguished by a dummy code that can distinguish the final code from the head code.

In the third aspect, music data is transmitted from the center to each karaoke terminal device by communication, and the number of bytes of a code between the music data is determined by a heading for identifying the head of the distributed music data. The number of data bytes is equal to or more than the number of bytes, and is used for discrimination from heading data.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a music data communication method in a karaoke system according to the present invention will be described below.

FIG. 1 is an overall configuration diagram of a private line network in a karaoke system using a music data communication method according to one embodiment of the present invention.

In FIG. 1, a center CEN includes lyrics data, character image data, karaoke music data (MID).
The music data such as I) is transmitted to each karaoke terminal device KTR via the relay broadcasting station TR. At this time, the relay broadcasting station TR can use the karaoke terminal devices KTR in a predetermined area, and transmits the karaoke terminal devices KTR sequentially designated from there. At the same time karaoke terminal equipment KTR
Consists of a modem MO and a commander CO, etc.
O processes so that music data such as lyrics data, character image data, and karaoke music data (MIDI) can be used as karaoke.

In the system for implementing the present invention, a configuration may be adopted in which the transmission is performed from the center CEN to each karaoke terminal device KTR without passing through the relay broadcasting station TR.

FIG. 2 is an overall configuration diagram of a karaoke terminal device KTR using a music data communication method in a karaoke system according to one embodiment of the present invention.

In FIG. 2, the arithmetic processing means 1 performs arithmetic and processing, and controls the karaoke terminal device KTR, and comprises a microcomputer or the like. Main storage means 2
Comprises a relatively large-capacity memory such as a hard disk or a magneto-optical disk. In this example, the hard disk has a hard disk and a magneto-optical disk for storing a plurality of music data for each music piece. The communication control means 3 mainly transmits the lyrics data, character image data, music-related data such as accompaniments, new songs, and song titles transmitted from the center by executing the communication program, that is, music data via the communication interface 4. This is for performing control for taking in the karaoke terminal device KTR. The transmission / reception buffer 5 is a memory for temporarily storing music data distributed via the communication interface 4. The reproduction means 7 is the main storage means 2
The music data is read from and reproduced. The display means 8 displays data relating to music data in an image.

The modem 10 for each communication medium is a modem connected to a private line (wired or the like) such as a transceiver using a medium such as an electric wave or light, and the telephone modem 9 is used as a public line. Telephone line modem. The modem buffer 9a is a memory for temporarily storing one or more songs of music data received via a telephone line. The various keys 6 have numeric keys and function keys related to the operation, and include a remote controller that controls wirelessly.

Next, the center CEN or the relay broadcasting station T
Data transmitted from R to each karaoke terminal device KTR will be described.

FIG. 13 is an explanatory diagram used in the music data communication method in the karaoke system according to one embodiment of the present invention.
(A) is a schematic diagram of transmission data, (b) is a schematic diagram of a basic format, and (c) is a schematic diagram of a heading of a basic format (b). FIG. 14 is an explanatory diagram of a data format used in the music data communication method in the karaoke system according to the conventional example (a) and the embodiment (b) of the present invention.

The data from the center CEN is shown in FIG.
As shown in (a), the information of one song has a pause period of 40 KB, the next song has a pause period of 4 B (bytes), the information of the next song has a pause period of 40 KB, and a pause period of 4 B has been placed. Information is 500B, and the information of the next song is 40K
B, and the pause period of 4B is cyclically transmitted.

The basic format [20] for data transmission of one piece of music has a total length of 1 KB (1024 B). As shown in FIG. [22] is 2B,
It consists of a total of 8B, 2B and 4B. STX [23] as the start of the data block is 1B, and the block No.
[24] uses 00H to FFH as block numbers,
The data part [25] indicates the data body, and the ETB [26] indicates the end of the data block. In the case of the end of the data block that does not continue, ETX is used. That is,
If music data such as a song exceeds the basic format, the data is cut off and transmitted halfway, and at this time, the ETB is used as an end block. BCS1 [27] and B
CS2 [28] is processed according to the CRC. The calculation of the BCS of this basic format [20] is based on SOH [2
1] or the next byte of STX [23] to ETB (or ETX) [26].

Further, details of the heading will be described.

As shown in FIG. 13C, the SOH [21] at which the heading starts is 1B, the data type and the complement of the data type are 2B and 2B, and the total is 4B, and the data size is 4 bytes.

In this embodiment, the data type 2B
And 4B comprising its complement 2B are used as a heading identification code for identifying the head of the distributed music data. Then, when 2B data type and its complement data are received 2B following SOH [21], it is identified as the head of music data.

In the case of this embodiment, the data type has, for example, the following contents.

[0032]

[Table 1]

Here, as shown in FIG. 14 (b), if one piece of information has a pause period of 40 KB and the next piece of music has a 4B pause period, and enters the information of the next piece of music, Even if the BCS2 ends at the end of the format with the same signal as the SOH at the start of the heading, the data type of the heading identification code is 2B since the data type of the subsequent heading and the complement 2B of the data type are fixed length. 2
Even if the same signal as the SOH at the start of heading is generated by inserting a 4B dummy irrelevant to B and its complement 2B, the arrival of the signal of the SOH at the start of heading follows by the arrival of the dummy code. Instead, it can be seen that the end of BCS2 is ended by the same signal as the SOH at the start of heading.

FIG. 3 is a flowchart of a main program of a music data communication method in the karaoke system according to one embodiment of the present invention. FIG. 4 is a flowchart of a communication process called by the main program of the music data communication method in the karaoke system according to one embodiment of the present invention.
Similarly, FIG. 5 is a flowchart of the inter-song information display processing called by the program of FIG. 4, FIG. 6 is a flowchart of transmission / reception processing called by the program of FIG. 4, and FIG. 7 is an upload processing called by the program of FIG. 8, FIG. 8 is a flowchart of a system termination process called by the program of FIG. 4, FIG. 9 is a flowchart of a registration process called by the program of FIG. 6, and FIG.
FIG. 11 is a flowchart of a disassembly process of a received file called by the program of FIG. 9, and FIG. 11 is a flowchart of a transmission / reception interruption process interrupted by the music data communication method in the karaoke system according to one embodiment of the present invention. . <Main Program> In FIG. 3, this main program is included in the karaoke terminal apparatus KTR. In step S1, it is determined that there is no reserved music or the system is terminated. If not, or if the system has been terminated, the communication processing routine is called in step S2. If a reserved song has been set, if the system has not been terminated, and if the music data A performance processing routine for performing performance output and character output is called based on this. Since the performance process does not directly relate to the gist of the present invention, the description thereof is omitted here.

<Communication Processing> When the communication processing routine is called, initialization for communication processing is performed in step S11 of FIG. In this initialization, processes such as securing the terminal address, various flags, the transmission / reception buffer 5, and initialization of other variables are performed. In step S12, a routine for displaying information between songs is called, in step S13, a routine for transmitting / receiving processing is called, in step S14, a routine for uploading is called, and in step S15, a routine for system termination processing is called. And step S16
When a predetermined music selection or the like is performed by the various keys 6 in step S17, it is determined that the request for terminating the program is made.
Performs post-processing for exiting the communication processing routine, and exits this routine.

<Inter-song information display processing> In the inter-song information display processing of this embodiment, when the information display is designated at the time of starting the program, it is executed at intervals of about 8 seconds. The information display can display up to 5 lines.

When the inter-tune information display processing routine is called in step S12, preparation for display data of up to about five lines is started in step S21 shown in FIG. With this display data, preparations are made for displaying information such as “weather forecast”, “news”, “event”, and “new song within one month” which are selected in advance by the various keys 6. Step S
At 22, the contents of the transmission / reception buffer 5 storing the selected information are checked to determine whether or not the selected information is stored and there is a line to be displayed. Exit this routine. If there is a line to be displayed, one line is displayed in step S23. Since about 1 second elapses during this display, 6 KB
To prevent the transmission / reception buffer 5 composed of a ring buffer from overflowing, when Head and Tail of the transmission / reception buffer 5 composed of a 6 KB ring buffer do not match in step S24, it means that data is stored in the transmission / reception buffer 5. From T in step S25.
The data stored in the aile is written into the main storage means 2, the tail written in the step S26 is incremented, and the process returns to the step S22. Thus, even if the display processing takes time, the transmission / reception buffer 5
To prevent overflow.

When the head and the tail of the transmission / reception buffer 5 composed of a 6 KB ring buffer match in step S24, it means that no data is stored in the transmission / reception buffer 5, and the process returns to step S22. When the process returns to step S22, the process is repeated until there are no more display lines, and the routine from step S22 to step S24 or from step S22 to step S26 is executed.

<Transmission / Reception Processing> In the transmission / reception processing of this embodiment, if the communication is a telephone line communication, the reception of the data is started if the modem has received data.

When the transmission / reception processing routine is called in step S13, music data arrives at the karaoke terminal device KTR of this embodiment via a wired line (private line) or a public line (telephone line) in step S31 shown in FIG. Is determined by switching the selection switch SW of the modem to be used. In the case of a public line, it is determined in step S32 whether or not music data is being received.
To determine whether there is received data in the modem buffer 9a of the telephone modem 9, and only when there is received data, step S
At 34, data reception starts, and the process proceeds to step S35. When it is determined in step S31 that the communication is wired communication, when it is determined in step S32 that music data is being received, and when it is determined in step S33 that there is no received data in the modem buffer 9a of the telephone modem 9, the process proceeds to step S32.
The process starts at step 35.

In step S35, it is determined whether Head and Tail of the transmission / reception buffer 5 composed of the 6KB ring buffer match, and when they match, it means that no data is stored in the transmission / reception buffer 5 composed of the 6KB ring buffer. From this routine.

If the Head and the Tail of the transmission / reception buffer 5 composed of a 6 KB ring buffer do not coincide with each other in step S35, it means that data is accumulated in the transmission / reception buffer 5.
The data stored in the aile is written into the main storage means 2, the tail that has been written is incremented in step S37, it is determined in step S38 whether the reception of one file has been completed, and the reception of one file has been completed or the Hea.
Until d and Tail become equal, the routine from step S35 to step S38 is repeatedly executed. Step S
If it is determined at 38 that the reception of one file has been completed, a registration processing routine is called at step S39.

<Upload Processing> In the upload processing of this embodiment, the performance history such as the frequency of use for each music piece and the music piece selection status in the time zone is written into the modem buffer 9a.

In step S14 shown in FIG. 4, the upload processing routine is called. In step S41 shown in FIG. 7, it is determined whether three hours have passed since the last upload processing routine was called. In order to upload the performance history information such as the frequency of use for each music and the music selection status in the time zone stored in the storage means 2, that is, to send the performance history information to the host computer of the center, the data is written into the modem buffer 9a in step S42. Used for management.

<System Termination Processing> In the system termination processing of the present embodiment, a system termination request is generated when the sub power supply is turned off by the key 6, and when two hours have passed from the system termination request, the main power supply is determined in step S52. And stop.

When the system termination processing routine is called in step S15, it is determined in step S51 shown in FIG. 8 whether two hours have passed since the system termination request, and when two hours have passed, the main power is turned off and stopped in step S52. I do.

<Registration Processing> In the registration processing of this embodiment, since the file is transmitted for each file except for communication such as telephone communication, the registration processing is performed as it is. Since the files are sent together, the disassembly process is performed, and the registration process is performed only when the file can be normally disassembled for each file.

When the registration processing routine is called in step S39 of the transmission / reception processing routine, it is determined in step S61 shown in FIG. 9 whether or not the communication is wired communication. If not, the received file is decomposed in step S62. Do
In step S63, it is determined whether or not there is a file that can be decomposed. When there is a file that can be decomposed, or when wired communication is performed, the file is registered in step S64. If there is no file that can be disassembled, exit this routine.

<Receiving File Decomposition Processing> In the receiving file decomposition processing of this embodiment, the received file and the registration table shown in FIG. 12 are used.

FIG. 12 is an explanatory diagram of an example of a reception file and a registration table used in the music data communication method in the karaoke system according to one embodiment of the present invention.

The received file of this embodiment has a file structure when a telephone line is used, and the registration table is a table for managing the number of the received file registered.
For example, when the file 1 is registered in the registration table, the registration flag is set to 1. If all the entries have been registered, the received data stored in the modem buffer 9a is deleted.
If the size is smaller than the size stored in the modem buffer 9, it is determined that a user interrupt (for example, music selection by the key 6) has occurred during the reception of the received data, and
The received data is received from a.

When the received file disassembly routine is called in step S62 of the registration processing routine, it is determined in step S71 in FIG. 10 whether or not the creation date and time of the received file matches the creation date and time of the registration table. When the date and time of creation does not match the date and time of creation in the registration table,
In step S72, the registration table is cleared. In step S73, the reception data creation date and time are written in the reception table creation date and time, and the process proceeds to step S74.

If it is determined in step S71 that the creation date and time of the received file matches the creation date and time of the registration table,
The process proceeds to step S74, where it is determined whether or not there is any data not yet received in the registration table.
When it is determined that there is no unreceived data in the registration table, the received data in the modem buffer 9a is deleted in step S75.

When it is determined that data not yet received exists in the registration table, step S76 is performed.
Then, the data of the size stored in the received file is read and written to the main storage means 2 by skipping to the offset of the data which is not registered in the step (1). In step S77, it is determined whether or not the number of data bytes actually read matches the size stored in the received file.
In step S78, the corresponding registration flag in the registration table is set to 1. If they do not match, the data written in the main storage means 2 in step S79 is deleted.

<Transmission / reception interrupt processing>
When one character is transmitted or one character is received, an order is placed. First, in step S81, it is determined whether the interrupt is a reception interrupt or a transmission interrupt. If not, the transmission interrupt is intended. Because there is, step S
When there is data to be transmitted at 82, 1 is set at step S83.
Perform character transmission. At the time of a reception interrupt, it is determined in step S84 whether the reception buffer pointed to by Head is 1024 bytes or less, and if it is determined in step S84 that it is not 1024 bytes or less, Head is incremented in step S85. After incrementing the Head in step S85, or when the receiving buffer of the Head is 1024 bytes or less in step S84, the process proceeds to step S85.
At 86, one character is stored.

As described above, the music data communication method in the karaoke system of the present embodiment distributes music data from the center CEN to each karaoke terminal device KTR by communication, and distributes the distributed music data to each karaoke terminal device KTR.
In the music data communication method in the karaoke system stored in the TR, a code between music data such as lyrics data, character image data, and karaoke music data (MIDI) to be distributed is not related to the 4B heading identification code. This is achieved by interposing a dummy code, which can be regarded as the first embodiment of the present invention.

Therefore, 4B has a dummy code irrelevant to the heading identification code interposed between the music data, such as between songs, without placing 200 ms of time between music data. Therefore, the end of the format of the music data is S at the start of the heading.
Even if BCS2 ends with the same signal as OH, the following heading data type 2B and the complement of that data type 2B have a fixed length and the code is clear, so the data type 2B of the heading identification code is used. By inserting a 4B dummy not related to the complement 2B of the data type, even if the same signal as the SOH at the start of the heading is generated, when the arrival of the subsequent dummy code is confirmed, Not the arrival of the SOH signal,
The end code of BCS2 happens to be
It turns out that it ended with the same signal as OH,
The BCS2 end code is not mistaken for the heading start SOH.

Therefore, when a plurality of music data such as lyrics data, character image data, and karaoke music data (MIDI) are transmitted cyclically, the number of circulations can be increased in the same time, and the time required for one cycle Can be shortened, so that when circulating the same number of times, the communication cost can be reduced and efficient communication means can be occupied.

In the above-described embodiment, the head identification code is described as an example in which a head data type 2B and a 4B dummy not related to the complement 2B of the data type are inserted. In this case, even if other data is used, as long as data having a content irrelevant to the data can be used as a dummy, the same effect as in the above embodiment can be obtained, and this can be regarded as the embodiment of claim 1. .

In the above embodiment, the number of bytes (n) of the dummy code interposed between the music data is the same as the number of bytes of the heading identification code. However, the present invention is not limited to this. Even if n) is smaller or larger than the number of bytes of the heading identification code, the same effect as in the above embodiment can be obtained.

If the dummy code interposed between the music data is a code that is not used for the music data, it can be identified even if it is 1 byte. The number of bytes n of the dummy code can be set to n = 1. Of course, at this time, it is also possible to set the number of bytes n = 2 or more.
If the time loss is several tens of bytes compared to 200 ms, the effect is sufficient.

In particular, it is generally difficult for a commercially available PC-AT compatible board used for assembling devices to monitor a timer for 55 ms or less. In these boards, the interrupt of the system timer is set at intervals of 55 ms as a standard, and an interval of 55 ms or more is required to surely monitor the timer.

Therefore, when these boards are used and the data interval in communication is set to 55 ms or less, the embodiment of the present invention is particularly effective. Further, since it is not necessary to monitor the timeout by the timer interrupt, the processing can be simplified. For example, when communicating at 9600 bps, one byte can be received in about 1 ms. If the dummy code is set to 4 bytes, the data interval can be set to 4 ms. Therefore, when communicating at 9600 bps, it is particularly effective if the number of bytes (n) of the dummy code is 55 or less.

The minimum value of the number of bytes (n) of the dummy code is the same as the number of bytes (1 to several bytes) of the heading identification code, but the time between data depends on the type of communication line. Is adjusted, the number of bytes of the dummy code may be made larger than the same number of bytes as the heading identification code. In this case, the same effect as in the above embodiment can be obtained. For example, when performing broadcast communication over a wired line or the like, it is desirable to reduce the data interval as much as possible. The reason is that even if one terminal misses continuous data, efficiency will be improved because any other terminal will capture the data. Further, when performing individual communication via a telephone line or the like, there is a time for processing for each data, so that it may be necessary to set the dummy code to be equal to or more than the number of bytes of the heading identification code and provide a certain data interval.

Therefore, according to the experiments performed by the inventors, the number of bytes (n) of the dummy code is an integer of n = 1 or more, and if it is an integer of 55 or less, the number of bytes is equal to the music data transmitted via the wire. The break between music data can be clearly confirmed. Further, preferably, the number of bytes (n) of the dummy code is the same as the number of bytes of the heading identification code, that is,
It is desirable to use 4 bytes or more.

In the above embodiment, the center C
Each karaoke terminal device K from the EN via the relay broadcasting station TR
Although the embodiment in which music data is distributed to the TR has been described, the present invention is not limited to this, and each karaoke terminal device KTR may be transmitted from the center CEN without passing through the relay broadcasting station TR. May be transmitted.

[0067]

As described above, in the music data communication method in the karaoke system according to the first aspect, the music data transmitted from the center to each karaoke terminal device by communication is composed of n bytes of code between the music data. Even if the final code of all songs matches the heading start code, the data is distinguished by a dummy code capable of distinguishing the final code from the head code.

Therefore, unlike the related art, a dummy code irrelevant to the heading data is provided for n bytes without placing a 200 ms time between music data such as between music pieces. Therefore, even if the end of the format of the music data ends with the same signal as the SOH at the beginning of the heading, the data of the following heading is clear, so a 4-byte dummy irrelevant to the heading code is used. Is inserted, even if the same signal as the heading start SOH is generated, when the arrival of the following dummy code is confirmed, the heading start SOH signal is not arrived but the end code is accidentally set. It can be seen that the processing has been completed by the same signal as the start SOH, and the end code of BCS2 is changed to the start SOH.
There is no mistake for OH.

Therefore, when a plurality of music data such as lyrics data, character image data, and karaoke music data (MIDI) are transmitted cyclically, the number of circulations can be increased in the same time, Can be shortened, so that when circulating the same number of times, the communication cost can be reduced and efficient communication means can be occupied.

In the music data communication method in the karaoke system according to the second aspect, the music data transmitted from the center to each karaoke terminal device by communication is converted into a code between the music data and the n-byte heading data. There is no dummy code, and even if the final code of all songs matches the heading start code, the data is distinguished by a dummy code that can distinguish the final code from the head code.

Therefore, a 4-byte dummy code irrelevant to heading data is interposed without placing 200 ms between music data, such as between music pieces, as in the prior art. Therefore, even if the end of the format of the previous music data ends with the same signal as the SOH at the start of the heading, two bytes of the following heading data type and two bytes of the complement of the data type are fixed length. Since the code is also clear, by inserting a 4-byte dummy irrelevant to the 2-byte heading data type and the 2-byte complement of the data type, the same signal as the SOH at the start of the heading is generated. Even if it occurs, when the arrival of the following dummy code is confirmed, the end code is not the arrival of the heading start SOH signal, but the end code. To see that ended with the same signal and the SOH of the start of the heading deer, this time, BCS
The end code of 2 is not mistaken for the SOH at the start of heading. Therefore, the same effect as the first aspect is obtained.

In the music data communication method for a karaoke system according to the third aspect, the code between the distributed music data and the music data is the number of bytes of the heading data for identifying the head of the distributed music data. Even if the number is more than the number, even if the final code of all songs matches the heading start code, data can be distinguished by a dummy code that can distinguish the final code from the head code.

Therefore, unlike the related art, the dummy data having the number of bytes equal to or larger than the number of bytes of the heading data irrespective of the heading data is provided without leaving 200 ms between music data such as between music pieces. Since the code is interposed, the final code such as the final code of all songs and the heading code are not confused by checking the dummy code of the number of bytes of the heading data or more. Therefore, the same effect as the first aspect is obtained.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a private line network in a karaoke system using a music data communication method according to one embodiment of the present invention.

FIG. 2 is an overall configuration diagram of a karaoke terminal device using a music data communication method in a karaoke system according to one embodiment of the present invention.

FIG. 3 is a flowchart of a main program of a music data communication method in the karaoke system according to one embodiment of the present invention.

FIG. 4 is a flowchart of a communication process called by a main program of a music data communication method in a karaoke system according to an embodiment of the present invention.

FIG. 5 is a flowchart of a music-to-song information display process called by the program of FIG. 4;

FIG. 6 is a flowchart of a transmission / reception process called by the program of FIG. 4;

FIG. 7 is a flowchart of an upload process called by the program of FIG. 4;

FIG. 8 is a flowchart of a system termination process called by the program of FIG. 4;

FIG. 9 is a flowchart of a registration process called by the program of FIG. 6;

FIG. 10 is a flowchart of a disassembly process of a received file called by the program of FIG. 9;

FIG. 11 is a flowchart of a transmission / reception interrupt process performed by the music data communication method in the karaoke system according to one embodiment of the present invention.

FIG. 12 is an explanatory diagram of an example of a reception file and a registration table used in the music data communication method in the karaoke system according to one embodiment of the present invention.

FIG. 13 is an explanatory diagram used in a music data communication method in the karaoke system according to one embodiment of the present invention;
(A) is a schematic diagram of transmission data, (b) is a schematic diagram of a basic format, and (c) is a schematic diagram of a heading of a basic format (b).

FIG. 14 is an explanatory diagram of a data format used in a music data communication method in a karaoke system according to a conventional example (a) and an embodiment (b) of the present invention.

[Explanation of symbols]

 Reference Signs List 20 basic format 21 SOH 22 heading 23 STX 24 block No. 25 data part 26 ETB 27 BCS1 28 BCS2

Claims (3)

(57) [Claims] 1. A music data communication method in a karaoke system for distributing music data from a center to each karaoke terminal device by communication and storing the distributed music data in each karaoke terminal device, comprising: The code between the music data is
A music data communication method in a karaoke system, wherein a dummy code of n (n is an integer of 1 or more) bytes is interposed. 2. The code between the distributed music data and the music data is formed by interposing a dummy code irrelevant to n (n is an integer of 1 or more) byte heading data. Item 2. A music data communication method in the karaoke system according to Item 1. 3. The code between the distributed music data and the music data, wherein the number of bytes is equal to or greater than the number of bytes of the heading data for identifying the head of the distributed music data. Claim 1 or Claim 2
3. A music data communication method in the karaoke system according to 1.