JPH08110785A - Musical data communication method for karaoke system - Google Patents

Abstract

PURPOSE: To efficiently communicate the musical data to karaoke accompaniment for singing terminal devices by inserting a dummy code of (n) bytes between the musical data transmitted from a center to the karaoke terminal devices by communications. CONSTITUTION: A dummy code of (n) bytes (e.g. four bytes) is inserted between the musical data transmitted from a center CEN to karaoke terminal devices KTR by communications. Even when the final code of the preceding musical piece coincides with the heading start code, these data are distinguished by the dummy code capable of distinguishing the final code and the heading code. The dummy code containing four bytes not related with two bytes of the data size of the heading and two bytes of the complement of the data size is inserted. Even when the same signal as the heading start SOH is generated, it is found by the arrival of the succeeding dummy code that BCS 2 is completed with the same signal as the heading start SOH, not the arrival of the heading start SOH signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a music data communication method for receiving music data such as lyrics data, character image data, karaoke music data (MIDI) and storing it 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 disclosed in Japanese Patent Laid-Open No. 4-67381.

In the technique disclosed in this publication, a song number header is added for each song unit of karaoke music composed of digital signals, and a plurality of karaoke songs are cyclically transmitted as a data string via a public line. A main storage device having a host computer and a karaoke terminal device connected to the terminal device of the public line and provided with a digital sound source driven by the digital signal, and storing a large number of karaoke music in the karaoke terminal device. In addition, a parallel reception memory for storing each unit data of karaoke music as a buffer is provided, the unit data is selectively stored in the reception memory, and stored in the main memory device and the reception memory. The number is compared with the number of the music that has been played, and is saved in the main memory only when it does not match.

As a result, a new song is received during the daytime when the usage rate of the karaoke terminal device is low and is stored in the main memory of the karaoke terminal device.

At this time, there is a rest period of 40 KB for one song from the center side and 200 ms until the next song,
The information of the next song is 40 KB, and the rest period of 200 ms is set, the information of the news is 500 B, and the next 1
The song information is 40 KB, and a 200 ms pause period is cyclically transmitted. That is, as shown in FIG. 14A, which illustrates the format of data used in the music data communication method in the conventional karaoke system, 20
The pause period of 0 ms is used as the timing for switching between songs.

[0006]

However, as in the present day, there are nighttime business stores such as snacks and daytime business stores such as coffee shops where the karaoke terminal device is used. It's open for hours. Therefore, even if the data of a new song is selected in the daytime when the usage rate of the karaoke terminal device is low, it is likely that the timing for writing the new song in the main memory of the karaoke terminal device cannot be easily obtained. That is, it is assumed that one of the karaoke terminal devices is operating.

Further, if the center carries out the broadcast communication to many karaoke terminal devices all over the country, the communication cost becomes high. Therefore, if a repeater is installed in a rural area and then transmitted to each karaoke terminal device, the communication cost becomes low. In particular, if the mail box function is used for transmitting and receiving music data, one relay station side can transfer 256 locations.

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

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

Therefore, 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, wherein music data is distributed from a center to each karaoke terminal device by communication, and the distributed music data is distributed to each karaoke terminal device. In a music data communication method in a karaoke system for storing, a code between distributed music data and music data is formed by interposing a dummy code of n (n is an integer of 1 or more) bytes.

A music data communication method in a karaoke system according to a second aspect of the invention is a music data communication method 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, the code between the music data to be distributed and the music data is a dummy code irrelevant to the heading data of n (n is an integer of 1 or more) bytes.

According to a third 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, the number of bytes of the code between the distributed music data and the music data is made equal to or larger than the number of bytes of the heading data for identifying the beginning of the distributed music data.

[0014]

According to the present invention, the code between the music data distributed by communication from the center to each karaoke terminal device by music is a dummy code of n (n is an integer of 1 or more) bytes, and all songs are Even if the final code coincides with the heading code, the dummy code is used to distinguish between the final code and the head code.

According to a second aspect of the present invention, the code between the music data distributed by communication from the center to each karaoke terminal device and the music data is related to n (n is an integer of 1 or more) bytes of heading data. There is no dummy code, and even if the last chord of all songs matches the heading chord, the dummy chord can distinguish between the last chord and the head chord to distinguish between the data.

According to a third aspect of the present invention, the number of bytes of the code between the music data and the music data distributed by communication from the center to each karaoke terminal device is identified by the heading for identifying the beginning of the distributed music data. The number of bytes of the data is set to be more than the number of bytes used to identify the heading data.

[0017]

Embodiments of the music data communication method in the karaoke system of 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 an embodiment of the present invention.

In FIG. 1, the center CEN has lyrics data, character image data, and 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 device KTR in a predetermined area, and transmits to each karaoke terminal device KTR designated sequentially from there. At the same time karaoke terminal device KTR
Is composed of a modem MO and a commander CO, and a commander C
O processes music data such as lyrics data, character image data, and karaoke music data (MIDI) so that it can be used as karaoke.

In the system for carrying out the present invention, the center CEN may be configured to transmit 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 the music data communication method in the karaoke system of one embodiment of the present invention.

In FIG. 2, the arithmetic processing means 1 performs arithmetic operations and processing and controls the karaoke terminal device KTR, and is composed of a microcomputer or the like. Main memory 2
Is a memory having a relatively large capacity such as a hard disk and a magneto-optical disk. Here, it has a hard disk and a magneto-optical disk that store a plurality of music data for each song. The communication control means 3 mainly receives data regarding music such as lyrics data, character image data, accompaniment, new song, and song name, that is, music data transmitted from the center by executing the communication program, that is, music data via the communication interface 4. The karaoke terminal device KTR is controlled to be taken in. The transmission / reception buffer 5 is a memory for temporarily storing the 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 as an image.

The communication medium-specific modem 10 is a modem connected to a private line (wired line) such as a transceiver using a medium such as radio waves and light, and the telephone modem 9 is used as a public line. It is a telephone line modem. The modem buffer 9a is a memory for temporarily storing one or more music data received via the telephone line. The various keys 6 have ten keys for operation and function keys, and also include a wirelessly controlled remote controller.

Next, the center CEN or the relay broadcasting station T
The 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 of one embodiment of the present invention.
(A) is a schematic diagram of transmission data, (b) is a schematic diagram of a basic format, (c) is a schematic diagram of the heading of the basic format (b). FIG. 14 is an explanatory diagram of a data format used in the music data communication method in the karaoke system of 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 is 40 KB, the rest of the next song is 4 B (byte), the information of the next one is 40 KB, and the rest of 4 B is placed. Information of 500B, and the information of the next song is 40K.
B and 4B rest periods are cyclically transmitted.

The basic format [20] for data transmission of one song has a total length of 1 KB (1024B), and as shown in FIG. 13B, 1H of SOH [21], which is the start of heading, and heading. [22] is 2B,
It consists of 8B of 2B and 4B. In addition, STX [23] as the start of the data block is 1B, block No.
[24] uses 00H to FFH as block numbers,
The data portion [25] indicates the data body, the ETB [26] indicates the end of the data block, and ETX is used for the end of the data block that does not continue. That is,
When music data such as a song exceeds this basic format, it is cut off midway and transmitted, and at this time, ETB is used as the end block. BCS1 [27] and B
CS2 [28] is processed according to the CRC. The BCS of this basic format [20] is calculated by SOH [2
1] or the byte next to STX [23] to ETB (or ETX) [26].

Further, details of the heading will be described.

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

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

In the case of this embodiment, the data type is, for example, as follows.

[0032]

[Table 1]

Here, as shown in FIG. 14B, when a rest period of 40 KB for one piece of music and 4 B for the next piece of music is set and the information of the next piece of music is entered, the previous piece of music is Even if BCS2 ends with the same signal as the SOH that starts the heading at the end of the format, since the data type 2B of the following heading and the complement 2B of that data type have a fixed length, the data type that is the heading identification code Of 2
Even if the same signal as the SOH at the start of heading is generated by inserting a dummy of 4B that is not related to B and its complement 2B, the signal of the SOH at the start of heading comes at the arrival of the following dummy code. Instead, it can be seen that the end of BCS2 ends with the same signal as SOH at the start of heading.

FIG. 3 is a flow chart of the main program of the music data communication method in the karaoke system of one embodiment of the present invention. FIG. 4 is a flow chart of communication processing called by the main program of the music data communication method in the karaoke system of one embodiment of the present invention.
Similarly, FIG. 5 is a flowchart of the inter-track 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 upload processing called by the program of FIG. 8 is a flowchart of the system termination process called by the program of FIG. 4, FIG. 9 is a flowchart of the registration process called by the program of FIG. 6, and FIG.
9 is a flow chart of a process of disassembling the received file called by the program of FIG. 9, and FIG. 11 is a flow chart of a transmission / reception interrupt process which is interrupted by the music data communication method in the karaoke system of one embodiment of the present invention. . <Main Program> In FIG. 3, this main program is possessed by the karaoke terminal device KTR, and it is determined in step S1 that there is no reserved song or the system is terminated, and the reserved song is currently set by the various keys 6. If not, or if the system is terminated, a communication processing routine is called in step S2. If a reserved song is set, if the system is not terminated, the music data is processed in step S3. A performance processing routine for performing performance output and character output is called. Since the performance process does not directly relate to the gist of the present invention, its description 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, processing such as terminal address, various flags, transmission / reception buffer 5 reservation, and initialization of other variables is performed. In step S12, a routine for displaying information between pieces of music is called, in step S13, a routine for transmission / reception processing is called, in step S14, a routine for upload processing is called, and further, 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 program is requested to end, and step S17 is performed.
The post-processing for exiting the communication processing routine is performed in step 1, and this routine is exited.

<Between song information display process> In the song interval information display process, when the information display is designated at the time of starting the program, it is executed at intervals of about 8 seconds. Up to 5 lines of information can be displayed.

When the inter-track information display processing routine is called in step S12, preparation of display data of about 5 lines at maximum is started in step S21 shown in FIG. This display data is prepared for displaying information such as "weather forecast", "news", "event", and "new music within one month" which are preselected 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 the selected information is stored and there is a line to be displayed. When there is no line to be displayed, Exit this routine. If there is a line to be displayed, the display process for one line is performed in step S23. Since about 1 second has elapsed during this display, 6 KB
If the 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 the transmission / reception buffer 5 composed of a ring buffer has data accumulated therein so that the transmission / reception buffer 5 composed of a ring buffer does not overflow. From step S25 to T
The data stored in ail is written in the main memory 2, the Tail written in step S26 is incremented, and the process returns to step S22. As a result, even if the display process takes time, the transmission / reception buffer 5
Does not overflow.

Further, when the Head and Tail of the transmission / reception buffer 5 composed of the 6 KB ring buffer match in step S24, it means that there is no data stored in the transmission / reception buffer 5, and therefore the process returns to step S22. Then, after returning to step S22, the routine is repeated until there are no more display lines, and the routine from step S22 to step S24 or step S22 to step S26 is executed.

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

When the transmission / reception processing routine is called in step S13, music data arrives at the karaoke terminal device KTR of this embodiment through a wired line (private line) or public line (telephone line) in step S31 shown in FIG. It is determined by switching the selection switch SW of the modem to be used. If it is a public line, it is determined in step S32 whether or not music data is being received, and step S33.
It is determined whether or not there is received data in the modem buffer 9a of the telephone modem 9, and only when there is received data, step S
The data reception is started at 34, and the process of step S35 is started. Further, when it is determined in step S31 that the communication is wired, 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,
Step 35 is entered.

In step S35, it is determined whether Head and Tail of the transmission / reception buffer 5 composed of the 6 KB ring buffer are coincident with each other. When they are coincident with each other, it means that the transmission / reception buffer 5 composed of the 6 KB ring buffer has no data accumulated therein. To get out of this routine.

If the Head and Tail of the transmission / reception buffer 5 consisting of a 6 KB ring buffer do not match at step S35, it means that the transmission / reception buffer 5 has data stored therein.
The data stored in "ail" is written in the main storage means 2, the written Tail is incremented in step S37, and it is determined in step S38 whether the reception of one file is completed or the reception of one file is completed or Hea.
The routine from step S35 to step S38 is repeatedly executed until d becomes equal to Tail. Step S
If it is determined in 38 that reception of one file has been completed, a registration processing routine is called in step S39.

<Uploading Process> In the uploading process of the present embodiment, the performance history such as the frequency of use of each song and the selection status of time zones is written in the modem buffer 9a.

In step S14 shown in FIG. 4, the upload processing routine is called, and in step S41 shown in FIG. 7, it is determined whether 3 hours have passed since the last upload processing routine was called. In order to upload performance history information such as the frequency of use for each song stored in the storage means 2 and the selection status of the time zone, that is, to send to the host computer side of the center, write it in the modem buffer 9a in step S42, and Used for management.

<System Termination Process> In the system termination process of this embodiment, when the sub power source is turned off with the key 6, a system termination request is generated, and when two hours have elapsed from the system termination request, the main power source is determined in step S52. Turn off 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 elapsed from the system termination request, and when two hours have elapsed, the main power supply is turned off and stopped in step S52. To do.

<Registration Processing> In the registration processing of the present embodiment, every file other than communication such as a telephone is transmitted. Therefore, the registration processing is performed as it is. Since they are sent together as one, the disassembly process is performed, and the registration process is performed only when the files can be disassembled normally.

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 disassembled in step S62. Done,
In step S63, it is determined whether or not the disassembled file exists, and when the disassembled file exists or in the case of wired communication, the file is registered in step S64. This routine is exited when there is no file that can be disassembled.

<Decomposition Processing of Received File> In the decomposition processing of the received file of this embodiment, the received file and the registration table of 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 of one embodiment of the present invention.

The reception file of this embodiment is a file structure when a telephone line is used, and the registration table is a table for managing up to what number of the reception file is registered.
For example, in the registration table, when file 1 is registered, the registration flag is set to 1. If all can be registered, the received data stored in the modem buffer 9a is deleted.
If the size is less than the size stored in, it is determined that a user interrupt (for example, selection of music by the key 6) was made while receiving the received data, and the modem buffer 9
Received data is received from a.

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

When 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,
In the processing of step S74, it is determined whether or not there is data that has not yet been 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.

If it is determined that there is data that has not been received in the registration table, step S76.
Then, the offset of the data not registered is skipped, and the data of the size stored in the received file is read and written in the main storage means 2. In step S77, it is determined whether the number of data bytes actually read matches the size stored in the reception 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 memory 2 is deleted in step S79.

<Transmission / reception interrupt processing> This transmission / reception interrupt
When one character is transmitted or when one character is received, the order is placed. First, in step S81, it is determined whether it is a reception interrupt or a transmission interrupt. If it is not a reception interrupt, a transmission interrupt is intended. Because there is, step S
If there is data to be transmitted in 82, 1 in step S83
Send characters. In the case of a reception interrupt, it is determined in step S84 whether or not the reception buffer pointed to by Head is 1024 bytes or less, and when it is determined in step S84 that it is not 1024 bytes or less, Head is incremented in step S85. After the Head is incremented in step S85, or when the head reception buffer is 1024 bytes or less in step S84, step S85
At 86, one character is stored.

As described above, in the music data communication method in the karaoke system of this embodiment, the music data is distributed from the center CEN to each karaoke terminal device KTR by communication, and the distributed music data is distributed to each karaoke terminal device K.
In the music data communication method in the karaoke system stored in the TR, the code between music data such as lyrics data, character image data, and karaoke music data (MIDI) to be distributed and the music data is not related to the 4B heading identification code. A dummy code is interposed, and this can be the embodiment of claim 1.

Therefore, as in the conventional art, 4B interposes a dummy code unrelated to the heading identification code without placing a time of 200 ms between the music data such as between the music and the music data. Therefore, the end of the previous music data format is S, which is the start of the heading.
Even if BCS2 ends with the same signal as OH, since the heading data type 2B and the complement 2B of the data type have a fixed length and the code is clear, the heading identification code 2B By inserting a 4B dummy irrelevant to 2B, which is the complement of the data type, even if the same signal as SOH for the start of heading is generated, when the arrival of the following dummy code is confirmed, Not the arrival of the SOH signal,
The end code of BCS2 happens to be the start of heading S
You can see that it ended with the same signal as OH. At this time,
The BCS2 end code cannot be mistaken for the heading SOH.

Therefore, in the case of cyclically transmitting a plurality of music data such as lyrics data, character image data, and karaoke music data (MIDI), the number of circulations can be increased at the same time, and the time required for one round Since it can be shortened, the communication cost can be reduced and the communication means can be efficiently occupied in the case of circulating the same number of times.

By the way, in the above embodiment, the heading identification code is described as an example of inserting a dummy of 4B which is not related to the heading data type 2B and the complement 2B of the data type. For other data, if data having a content unrelated to the data can be used as a dummy, the same effect as that of the above embodiment can be obtained, and this can be the embodiment of claim 1. .

In the above embodiment, the number of bytes (n) of the dummy code interposed between the music data and the music data is the same as the number of bytes of the heading identification code. However, the number of bytes of the dummy code is not limited to this. Even if n) is made 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 and the music data is a code not used for the music data, it can be identified even if it is 1 byte. The number of bytes of the dummy code may be n = 1. Of course, at this time, it is possible to set the number of bytes n = 2 or more,
If the time loss is several tens of bytes as compared with 200 ms, the effect is sufficiently obtained.

In particular, it is generally difficult to monitor a timer of 55 ms or less with a commercially available PC-AT compatible machine board used for equipment incorporation. In these boards, the system timer interrupt is set every 55 ms as a standard, and an interval of 55 ms or more is necessary for reliable timer monitoring.

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 time-out with the timer interrupt, the processing can be simplified. For example, when communicating at 9600 bps, 1 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 of the heading identification code (1 to several bytes), but the time between data depends on the type of communication line. If it is desired to adjust, the number of bytes of the dummy code may be made larger than the same number of bytes as the heading identification code. Also in this case, the same effect as that of 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. This is because even if a metaphorical terminal misses data that comes in succession, any other terminal will take in the data, so that the efficiency is improved. Further, when individual communication is performed through a telephone line or the like, there is a time to process each data, so that it may be necessary to set the dummy code to the number of bytes of the heading identification code or more and to leave a data interval to some extent.

Therefore, according to the experiments 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, it means that the music data to be transmitted via a cable is used. It is possible to clearly confirm the boundaries between music data. Furthermore, 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 have 4 bytes or more.

In the above embodiment, the center C
Each karaoke terminal device K from EN via relay broadcasting station TR
Although the embodiment in which the music data is distributed to the TR has been described, the present invention is not limited to this, and each karaoke terminal device KTR from the center CEN does not go through the relay broadcasting station TR. May be sent to.

[0067]

As described above, in the music data communication method in the karaoke system according to the first aspect, the code between the music data and the music data distributed from the center to each karaoke terminal device by communication is n bytes. Even if the final chords of all songs match the heading chords, the dummy chords are used to distinguish between the final chords and the head chords.

Therefore, as in the conventional case, a dummy code irrelevant to the heading data is inserted for n bytes without placing a time of 200 ms between the music data such as between music pieces. Therefore, even if the end of the previous music data format ends with the same signal as the heading SOH, the following heading data is clear, so a 4-byte dummy that is not related to the heading code. Even if the same signal as the SOH of the heading start is generated by inserting, when the arrival of the succeeding dummy code is confirmed, the end code of the heading happens to occur instead of the arrival of the SOH signal of the heading start. It can be seen that the signal ends with the same signal as the start SOH, and the BCS2 end code is set to the start S
There is no mistake for OH.

Therefore, in the case of cyclically transmitting a plurality of music data such as lyrics data, character image data, and karaoke music data (MIDI), the number of circulations can be increased at the same time, and the time required for one round Since it can be shortened, the communication cost can be reduced and the communication means can be efficiently occupied in the case of circulating the same number of times.

In the music data communication method in the karaoke system according to the second aspect, the code between the music data distributed by communication from the center to each karaoke terminal device and the music data is related to the n-byte heading data. There is no dummy code, and even if the last chord of all songs matches the heading chord, the dummy chord can distinguish between the last chord and the head chord to distinguish between the data.

Therefore, as in the prior art, a dummy code irrelevant to the heading data is inserted for 4 bytes without placing a time of 200 ms between music data such as between music pieces. Therefore, even if the end of the previous music data format ends with the same signal as the SOH that starts the heading, 2 bytes of the data type of the following heading and 2 bytes of the complement of that data type have a fixed length. Since the code is also clear, by inserting a 4-byte dummy that is not related to the 2 bytes of the data type of the heading and the 2 bytes of the complement of the data type, the same signal as the SOH at the beginning of the heading can be obtained. Even if it occurs, when the arrival of the following dummy code is confirmed, the end code is not the arrival of the SOH signal of the heading start, To see that ended with the same signal and the SOH of the start of the heading deer, this time, BCS
Do not mistake the end code of 2 for the SOH at the beginning of heading. Therefore, the same effect as that of claim 1 is achieved.

In the music data communication method in the karaoke system according to claim 3, the code between the distributed music data and the music data is a byte of the heading data for identifying the head of the distributed music data. Even if the final chords of all songs match the chords of the heading start, the data can be discriminated from each other by the dummy chords that can discriminate the chords of the head from the chords of the head.

Therefore, unlike the conventional case, a dummy of more than the number of bytes of the heading data irrelevant to the heading data is set without placing a time of 200 ms between the music data such as between the music and the music data. Since the chords are inserted, it is possible to make sure that the final chords such as the final chords of all songs are not mistaken for the heading chords by checking the dummy chords whose number is more than the number of bytes of the heading data. Therefore, the same effect as that of claim 1 is achieved.

[Brief description of 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 an 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 an embodiment of the present invention.

FIG. 3 is a flowchart of a main program of a music data communication method in a karaoke system according to an 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 inter-track information display processing called by the program of FIG.

FIG. 6 is a flowchart of transmission / reception processing called by the program of FIG.

FIG. 7 is a flowchart of upload processing called by the program of FIG.

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

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

FIG. 10 is a flowchart of a process of disassembling a received file called by the program of FIG.

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

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

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

[Explanation of symbols]

 20 Basic Format 21 SOH 22 Heading 23 STX 24 Block No 25 Data Part 26 ETB 27 BCS1 28 BCS2

Claims (3)

[Claims] 1. 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. The code between music data is
A music data communication method in a karaoke system, characterized by interposing a dummy code of n (n is an integer of 1 or more) bytes. 2. A code between the distributed music data and the music data is formed by interposing a dummy code which is not related to heading data of n (n is an integer of 1 or more) bytes. Item 1. 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 has a number of bytes which is equal to or larger than the number of bytes of heading data for identifying the beginning of the distributed music data. Claim 1 or Claim 2
A music data communication method in the karaoke system described in 1.