Karaoke System

Abstract

To control power supply of a plurality of karaoke devices without imposing a burden on an employee.SOLUTION: In a karaoke system (10), a plurality of karaoke devices (20A to 20D) are communicatively connected. One karaoke device (20A) comprises: a setting part (23A) for receiving setting of first time and second time which is later than the first time; a transmission part (24A) for transmitting an operation signal corresponding to power supply operation by an employee to other karaoke devices; and a transmission control part (25A) for controlling the transmission part so as to inhibit transmission of the operation signal when power supply operation is performed between the first time and the second time. The other karaoke devices (20B to 20D) comprise power supply control parts (22B to 22D) for controlling power supply in accordance with power supply operation by the employee or the operation signal.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a karaoke system. [Background technology]

[0002] In establishments where multiple karaoke machines are installed, such as karaoke booths, employees go around to each room before opening and after closing to turn on the power to each karaoke machine. This has become a burden for employees in establishments with a large number of karaoke machines. For this reason, karaoke machines have been disclosed that use a timer function to turn the power off at a scheduled time (see, for example, Patent Document 1). In the karaoke machine described in Patent Document 1, a scheduled time for turning the power off is set by an employee, and the power is automatically turned off when the scheduled time is reached on the timer. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2002-99288 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, while using a timer function as described in Patent Document 1 allows the power of the karaoke machine to be turned on or off automatically, an employee must set the scheduled power-on and power-off times for each karaoke machine one by one.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a karaoke system capable of controlling the power supplies of a plurality of karaoke devices without imposing a burden on employees. [Means for solving the problem]

[0006] The main invention for achieving the above object is a karaoke system in which multiple karaoke machines are connected to each other so as to be able to communicate with each other, wherein one karaoke machine has a setting unit that accepts the setting of a first time and a second time that is later than the first time, a transmission unit that transmits an operation signal in response to a power operation by an employee to the other karaoke machines, and a transmission control unit that controls the transmission unit to prohibit the transmission of the operation signal if a power operation is performed between the first and second times, and the other karaoke machines have a power control unit that controls the power in response to the power operation or operation signal by the employee. Effect of the Invention

[0007] According to the present invention, when a power operation is performed on one karaoke machine before the first time has passed or after the second time has passed, an operation signal is transmitted from the one karaoke machine to the other karaoke machines. Thus, the power of the other karaoke machines is automatically turned on or off in accordance with the power of the one karaoke machine. If a power operation is performed on the one karaoke machine between the first time and the second time, the transmission of an operation signal from the one karaoke machine to the other karaoke machines is prohibited. Thus, even if the one karaoke machine needs to be reset due to a malfunction or the like during the time period between the first time and the second time, the other karaoke machines will not be turned on or off by mistake. In this way, the power operation or setting operation of the other karaoke machines by the employee is no longer necessary, and the burden on the employee can be reduced. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a configuration diagram of a karaoke system according to a first embodiment. [Diagram 2] FIG. 1 is a functional block diagram of a karaoke system according to a first embodiment. [Diagram 3] FIG. 4 is a flow chart showing the processing operation of the karaoke apparatus of the first embodiment. [Figure 4] FIG. 11 is a flowchart showing a processing operation of the karaoke apparatus of the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] First Embodiment A karaoke system according to a first embodiment will be described with reference to Figures 1 and 2. Figure 1 is a configuration diagram of the karaoke system according to the first embodiment. Figure 2 is a functional block diagram of the karaoke system according to the first embodiment. Note that, for the sake of convenience, the functional block diagram of Figure 2 shows functional blocks for implementing specific processing, but it is assumed that the karaoke system is equipped with the components that are normally equipped. Also, although the karaoke device is given the symbol AD, the symbol AD ​​may be omitted if no particular karaoke device is specified.

[0010] As shown in Fig. 1, a karaoke system 10 is installed in a store such as a karaoke booth, and each private room in the store is provided with one karaoke machine 20A-20D. The karaoke machines 20A-20D are connected to each other via a network 15 so that they can communicate with each other. For power supply control, a master / slave system is adopted in which the karaoke machine (one karaoke machine) 20A is the master machine, and the karaoke machines (other karaoke machines) 20B-20D are slave machines. Note that the karaoke machines 20A-20D can be switched between master and slave by employees.

[0011] The karaoke device 20 is connected to a monitor 16, a speaker 17, a microphone 18, and a remote control device 19. The monitor 16 displays lyrics captions together with a background image based on a video signal or the like from the karaoke device 20. The microphone 18 converts a singing voice into a singing voice signal and inputs it to the karaoke device 20. The speaker 17 emits the singing voice together with the performance sound based on the performance sound signal from the karaoke device 20 and the singing voice signal from the microphone 18. The remote control device 19 accepts various operations for the karaoke device 20, such as reserving songs.

[0012] When the karaoke performance is started by the karaoke device 20, lyrics captions and background images are displayed on the monitor 16 in time with the karaoke performance. In the karaoke device 20, the performance sound signal of the karaoke performance and the singing voice signal input from the microphone 18 are mixed by the mixer, and this mixed signal is amplified by the amplifier and output from the speaker 17. In this way, when the singer sings along with the karaoke performance, the singing voice is output from the speaker 17 together with the performance sound. In addition, the karaoke device 20 scores the singer's singing voice and the score result is displayed on the monitor 16.

[0013] As shown in Fig. 2, the karaoke system 10 is configured to automatically turn on or off the power of the karaoke devices 20B-20D in response to a power operation on the karaoke device 20A. The karaoke device 20A is provided with a power switch 21A, a power control unit 22A, a setting unit 23A, a transmission unit 24A, and a transmission control unit 25A. The karaoke devices 20B-20D are provided with power switches 21B-21D and power control units 22B-22D. In addition, the karaoke devices 20A-20D are each equipped with a built-in real-time clock (not shown), which counts the current time.

[0014] The power switch 21A of the karaoke device 20A accepts on and off operations as power operations by an employee. The power switch 21A is, for example, a mechanical switch provided on the device housing or a touch panel switch displayed on an operation screen. The power control unit 22A controls the power supply in response to the power operation of the power switch 21A. When the power switch 21A is operated to on, the power control unit 22A switches the power of the karaoke device 20A from off to on. When the power switch 21A is operated to off, the power control unit 22A switches the power of the karaoke device 20A from on to off.

[0015] The setting unit 23A accepts the setting of a first time T1 and a second time T2 that is later than the first time T1. In this embodiment, the opening time is set as the first time T1, and the closing time is set as the second time T2. For example, a timetable as shown in Table 1 is prepared for the karaoke device 20A. In the first embodiment, the business hours of the store are from 10:00 to 23:00. Therefore, the opening time of 10:00 is set as the first time T1 in the timetable, and the closing time of 23:00 is set as the second time T2 in the timetable. [Table 1]

[0016] The transmitting unit 24A transmits an operation signal corresponding to the power operation by the employee to the other karaoke devices 20B-20D. The transmission control unit 25A controls the transmission process of the transmitting unit 24A according to the operation time of the power operation on the power switch 21A. The operation time of the power operation is monitored by a real-time clock, and the transmission control unit 25A compares the operation time of the power operation with the first and second times T1 and T2 in the timetable. If the power operation is performed between the first time T1 and the second time T2 (during business hours), the transmission control unit 25A controls the transmitting unit 24A to prohibit the transmission of an ON signal or an OFF signal as an operation signal.

[0017] The power switches 21B-21D of the karaoke devices 20B-20D are configured similarly to the power switch 21A of the karaoke device 20A. The power controller 22B-22D controls the power supply in response to the power operation of the power switches 21B-21D, and also in response to an operation signal from the karaoke device 20A. When the power switches 21B-21D are turned on or an on signal is received from the karaoke device 20A, the power controller 22B-22D switches the power supply of the karaoke devices 20B-20D from off to on. When the power switches 21B-21D are turned off or an off signal is received from the karaoke device 20A, the power controller 22B-22D switches the power supply of the karaoke devices 20B-20D from on to off.

[0018] In this way, if the power operation for karaoke device 20A is performed during business hours, the transmission of an operation signal from karaoke device 20A to karaoke devices 20B-20D is prohibited. Outside the store's business hours, karaoke devices 20B-20D are powered on and off in accordance with the power operation for karaoke device 20A, but karaoke devices 20B-20D are not powered on and off in accordance with the power operation for karaoke device 20A during the store's business hours. This reduces the workload of power operations for karaoke devices 20B-20D before opening or after closing, and prevents the power of karaoke devices 20B-20D from being erroneously controlled during business hours.

[0019] For example, when an employee turns on the power switch 21A of karaoke device 20A at 9:50 before opening time, the real-time clock outputs the operation time of the on operation to the transmission control unit 25A. The transmission control unit 25A refers to the timetable and compares the operation time of the on operation with the first and second times T1 and T2 in the timetable. Since the operation time is not between the first time T1 and the second time T2, the transmission of the operation signal is not prohibited, and the transmission unit 24A transmits an on signal to the karaoke devices 20B-20D, and the power is turned on by the power control units 22B-22D. The power of the karaoke devices 20B-20D is controlled in accordance with the power operation of the karaoke device 20A.

[0020] In addition, when an employee turns off the power switch 21A of karaoke device 20A at 23:10 after closing time, the real-time clock outputs the operation time of the off operation to the transmission control unit 25A. The transmission control unit 25A refers to the time table and compares the operation time of the off operation with the first and second times T1 and T2 in the time table. Since the operation time is not between the first time T1 and the second time T2, the transmission of the operation signal is not prohibited, and the transmission unit 24A transmits an off signal to karaoke devices 20B-20D, and the power is turned off by the power control units 22B-22D. The power of karaoke devices 20B-20D is controlled in accordance with the power operation of karaoke device 20A.

[0021] In addition, when an employee turns off the power switch 21A of karaoke device 20A at 10:30 during business hours, the real-time clock outputs the time of the off operation to the transmission control unit 25A. The transmission control unit 25A refers to the time table and compares the time of the off operation with the first and second times T1 and T2 in the time table. Because the operation time is between the first time T1 and the second time T2, the transmission control unit 25A controls the transmitter 24A to prohibit the transmission of an off signal to karaoke devices 20B-20D. The power of karaoke devices 20B-20D is not controlled in accordance with the power operation of karaoke device 20A.

[0022] The various processes of the karaoke devices 20A-20D may be realized by software using a processor, or may be realized by a logic circuit (hardware) formed in an integrated circuit or the like. When a processor is used, the processor reads out and executes a program stored in a memory to perform various processes. For example, a CPU (Central Processing Unit) is used as the processor. The memory is composed of one or more storage media such as a ROM (Read Only Memory) and a RAM (Random Access Memory) depending on the application.

[0023] The processing operation of the karaoke system of the first embodiment will be described with reference to Fig. 3. Fig. 3 is a flow diagram showing the processing operation of the karaoke device of the first embodiment. Note that the symbols in Fig. 2 will be used as appropriate for the explanation. The processing operation below is merely an example and can be modified as appropriate. It is also assumed that the first and second times T1 and T2 are set in advance in the karaoke device.

[0024] 3, when a power operation is performed on the power switch 21A of the karaoke device 20A (Yes in step S01), the power control unit 22A turns the power on and off in response to the power operation of the power switch 21A (step S02). Next, the transmission control unit 25A obtains the operation time of the power operation from the real-time clock (step S03), and the transmission control unit 25A determines whether the operation time of the power operation is between the first time T1 and the second time T2 (step S04). In other words, it is determined whether the power operation is performed during business hours or outside business hours.

[0025] If the power operation time is between the first time T1 and the second time T2 (Yes in step S04), the transmission control unit 25A controls the transmission unit 24A to prohibit transmission of the operation signal to the karaoke devices 20B-20D (step S05). If the power operation time is not between the first time T1 and the second time T2 (No in step S04), the transmission unit 24A transmits the operation signal to the karaoke devices 20B-20D (step S06). When the karaoke devices 20B-20D receive the operation signal, the power control units 22B-22D control the power of the karaoke devices 20B-20D in accordance with the power operation of the karaoke device 20A.

[0026] As described above, according to the first embodiment, when the power of the karaoke device 20A is operated outside business hours, the karaoke device 20A transmits an operation signal to the karaoke devices 20B-20D. Therefore, the power of the karaoke device 20B-20D is automatically turned on or off in accordance with the karaoke device 20A. If the karaoke device 20A is powered on or off automatically during business hours because a reset is required, for example, the karaoke device 20A is prohibited from transmitting an operation signal to the karaoke devices 20B-20D. Therefore, the karaoke device 20B-20D is not turned on or off by mistake during business hours. In this way, the power or setting operation of the karaoke device 20B-20D by the employee is no longer required, and the burden on the employee can be reduced. Note that when business hours cross over a date, that is, when midnight is between the first time T1 and the second time T2, the transmission control unit 25A only needs to determine whether the power operation is performed between the first time T1 and midnight, or between midnight and the second time T2.

[0027] <Second embodiment> Next, a karaoke system according to a second embodiment will be described. The karaoke system according to the second embodiment differs from the karaoke system according to the first embodiment only in the setting unit and the transmission control unit. Therefore, in the second embodiment, the description of the same configuration as in the first embodiment will be omitted by using FIG. 2.

[0028] As shown in Fig. 2, the setting unit 23A of the karaoke device 20A accepts the setting of a third time T3 before the first time T1 and a fourth time T4 after the second time T2 in addition to the setting of a first time T1 and a second time T2. In this embodiment, the opening time is set as the first time T1, the closing time is set as the second time T2, a predetermined time before the opening time is set as the third time T3, and a predetermined time after the closing time is set as the fourth time T4. The third time T3 is set in consideration of the time required for preparation before the opening time, and the fourth time T4 is set in consideration of the time required for cleaning up after the closing time.

[0029] For example, the karaoke device 20A is provided with a timetable as shown in Table 2. In the second embodiment, the opening hours of the store are set from 10:00 to 23:00, as in the first embodiment. Therefore, the opening time of 10:00 is set in the timetable as the first time T1, and the closing time of 23:00 is set in the timetable as the second time T2. In addition, 9:30, 30 minutes before the opening time, is set in the timetable as the third time T3, and 23:30, 30 minutes after the closing time, is set in the timetable as the fourth time T4. [Table 2]

[0030] The transmission control section 25A obtains the operation time of the power operation from the real-time clock, and controls the transmission process of the transmission section 24A by referring to the time table. When the power operation is performed in a time period other than between the third time T3 and the first time T1, or when the power operation is performed in a time period other than between the second time T2 and the fourth time, the transmission control section 25A controls the transmission section 24A to prohibit the transmission of the operation signal. That is, the transmission section 24A of the karaoke device 20A transmits the operation signal to the karaoke devices 20B-20D only when the power operation is performed by the employee in the time period from the third time T3 to the first time T1 and from the second time T2 to the fourth time.

[0031] In this way, the transmission of operation signals from karaoke device 20A to karaoke devices 20B-20D is prohibited except during the specified time period before and after business hours when the power operation for karaoke device 20A is performed. During the specified time period before and after business hours, the power of karaoke device 20B-20D is turned on and off in accordance with the power operation of karaoke device 20A, and the power of karaoke device 20B-20D is not turned on and off in accordance with the power operation of karaoke device 20A outside of this time period. This reduces the workload of power operation for karaoke device 20B-20D before opening or after closing, and the power of karaoke device 20B-20D is not erroneously controlled during business hours or when employees are absent.

[0032] For example, if an employee turns on the power switch 21A of karaoke device 20A at 9:50 before opening time, the real-time clock outputs the operation time of the on operation to the transmission control unit 25A. The transmission control unit 25A refers to the time table and compares the operation time of the on operation with each of the times T1-T4 in the time table. Since the operation time is between the third time T3 and the first time T1, the transmission of the operation signal is not prohibited, and the transmission unit 24A transmits an on signal to the karaoke devices 20B-20D, and the power is turned on by the power control units 22B-22D. The power of the karaoke devices 20B-20D is controlled in accordance with the power operation of the karaoke device 20A.

[0033] In addition, when an employee turns off the power switch 21A of karaoke device 20A at 23:10 after closing time, the real-time clock outputs the operation time of the off operation to the transmission control unit 25A. The transmission control unit 25A refers to the time table and compares the operation time of the off operation with each of the times T1-T4 in the time table. Since the operation time is between the second time T2 and the fourth time T4, the transmission of the operation signal is not prohibited, and the transmission unit 24A transmits an off signal to karaoke devices 20B-20D, and the power is turned off by the power control units 22B-22D. The power of karaoke devices 20B-20D is controlled in accordance with the power operation of karaoke device 20A.

[0034] In addition, when an employee turns on the power switch 21A of karaoke device 20A at 10:10 during business hours, the real-time clock outputs the time of the on operation to the transmission control unit 25A. The transmission control unit 25A refers to the timetable and compares the time of the on operation with each of the times T1-T4 in the timetable. Because the operation time is between the first time T1 and the second time T2, the transmission control unit 25A controls the transmitter 24A to prohibit the transmission of an on signal to karaoke devices 20B-20D. The power of karaoke devices 20B-20D is not controlled in accordance with the power operation of karaoke device 20A.

[0035] Furthermore, when an employee turns on the power switch 21A of karaoke device 20A at 9:20, more than 30 minutes before business hours, the real-time clock outputs the time of the on operation to the transmission control unit 25A. The transmission control unit 25A refers to the timetable and compares the time of the on operation with each of the times T1-T4 in the timetable. Because the operation time is before the third time T3, the transmission control unit 25A controls the transmitter 24A to prohibit the transmission of an on signal to karaoke devices 20B-20D. The power of karaoke devices 20B-20D is not controlled in accordance with the power operation of karaoke device 20A.

[0036] The processing operation of the karaoke system of the second embodiment will be described with reference to Fig. 4. Fig. 4 is a flow diagram showing the processing operation of the karaoke device of the second embodiment. Here, the symbols in Fig. 2 will be used as appropriate for the explanation. The following processing operation is merely an example and can be modified as appropriate. It is also assumed that the first to fourth times T1-T4 are set in advance in the karaoke device.

[0037] 4, when a power operation is performed on the power switch 21A of the karaoke device 20A (Yes in step S11), the power control unit 22A turns the power on and off in response to the power operation of the power switch 21A (step S12). Next, the transmission control unit 25A obtains the operation time of the power operation from the real-time clock (step S13), and determines whether the operation time of the power operation is between the third time T3 and the first time T1 or between the second time T2 and the fourth time T4 (step S14). In other words, it is determined whether the power operation is performed during a predetermined time period before or after business hours.

[0038] If the power operation time is not between the third time T3 and the first time T1 or between the second time T2 and the fourth time T4 (No in step S14), the transmission control unit 25A controls the transmission unit 24A to prohibit transmission of the operation signal to the karaoke devices 20B-20D (step S15). If the power operation time is between the third time T3 and the first time T1 or between the second time T2 and the fourth time T4 (Yes in step S14), the transmission unit 24A transmits the operation signal to the karaoke devices 20B-20D (step S16). When the karaoke devices 20B-20D receive the operation signal, the power control units 22B-22D control the power of the karaoke devices 20B-20D in accordance with the power operation of the karaoke device 20A.

[0039] As described above, according to the second embodiment, the power supply operation or setting operation of the karaoke devices 20B-20D by the employees is no longer required, and the burden on the employees can be reduced. In addition, the power supply of the other karaoke devices 20B-20D is not turned on or off by mistake except during a specified time period before and after business hours. The power supply control of the other karaoke devices 20B-20D from a remote location can be finely restricted. For example, it is possible to prevent the power supply of the other karaoke devices 20B-20D from being turned off by the power supply operation of the karaoke device 20A during a program version update or demonstration experiment during non-business hours at night.

[0040] <Variation 1> In the second embodiment, the third and fourth times T3 and T4 are set manually, but the third and fourth times T3 and T4 may be set automatically. In this case, the karaoke device 20A is provided with a storage unit (not shown) that stores an operation history in which the operation contents of the power operation are associated with the operation times, and the third and fourth times T3 and T4 are automatically set by the setting unit 23A based on the operation history. The third time T3 is set based on the operation history when the karaoke device 20A is powered on, and the fourth time T4 is set based on the operation history when the karaoke device 20A is powered off.

[0041] For example, the storage unit stores a history table as shown in Table 3. The history table shown in Table 3 is obtained by extracting only the power-on operation history as the power operation content. The power-on operation times of the karaoke device 20A are concentrated between 9:45 and 9:55. The third time T3 is set by going back in 30-minute increments from the first time T1 so as to include these operation times. Since the first time T1 is set to 10:00, the third time T3 is automatically set to 9:30, 30 minutes before 10:00, so as to include the operation times from 9:45 to 9:55. [Table 3]

[0042] Also, for example, a history table as shown in Table 4 is stored in the storage unit. The history table shown in Table 4 is obtained by extracting only the power off operation history as the operation content of the power operation. The power off operation times of the karaoke device 20A are concentrated between 23:05 and 23:15. The fourth time T4 is set by advancing the time in 30-minute increments from the second time T2 so as to include these operation times. Since the second time T2 is set to 23:00, the fourth time T4 is automatically set to 23:30, 30 minutes after 23:00, so as to include the operation times from 23:05 to 23:15. [Table 4]

[0043] As described above, according to the first modification, the third and fourth times T3 and T4 are appropriately set based on the operation history. In addition, it is not necessary to set the third and fourth times T3 and T4 for the karaoke device 20A, which reduces the burden on the staff.

[0044] <Variation 2> In the second embodiment, the transmission control unit 25A may control the transmission unit 24A to prohibit the transmission of an operation signal when the power is turned off between the third time T3 and the first time T1. Also, the transmission control unit 25A may control the transmission unit 24A to prohibit the transmission of an operation signal when the power is turned on between the second time T2 and the fourth time T4. That is, only an ON signal may be transmitted between the third time T3 and the first time T1, and only an OFF signal may be transmitted between the second time T2 and the fourth time T4.

[0045] For example, the karaoke device 20A is provided with a timetable as shown in Table 5. In the second modification of the second embodiment, the store's business hours are set from 10:00 to 23:00, as in the first embodiment. In the timetable, 9:30 is set as the third time T3, 10:00 as the first time T1, 23:00 as the second time T2, and 23:30 as the fourth time T4. Only the transmission of an ON signal is permitted during the time period before the store opens from 9:30 to 10:00, and only the transmission of an OFF signal is permitted during the time period after the store closes from 23:00 to 23:30. [Table 5]

[0046] When an employee turns on karaoke device 20A at 9:50, an ON signal is sent by transmitting unit 24A to karaoke devices 20B-20D, and karaoke devices 20B-20D are powered on in response to the ON operation of karaoke device 20A. On the other hand, when an employee turns off karaoke device 20A at 9:50, transmitting control unit 25A controls transmitting unit 24A to prohibit the transmission of an OFF signal to karaoke devices 20B-20D. Therefore, during the 30 minutes before opening time, even if an OFF operation is performed on karaoke device 20A, karaoke devices 20B-20D are not powered off in response to the OFF operation of karaoke device 20A.

[0047] When an employee turns off karaoke device 20A at 23:10, an off signal is sent by transmitting unit 24A to karaoke devices 20B-20D, and karaoke devices 20B-20D are turned off in accordance with the off operation of karaoke device 20A. On the other hand, when an employee turns on karaoke device 20A at 23:10, transmitting control unit 25A controls transmitting unit 24A to prohibit sending an on signal to karaoke devices 20B-20D. For this reason, for 30 minutes after closing time, even if an on operation is performed on karaoke device 20A, karaoke devices 20B-20D will not be turned on in accordance with the on operation of karaoke device 20A.

[0048] As described above, according to the second modification, only the operation signal corresponding to the power-on operation is transmitted during the predetermined time period before business hours, and only the operation signal corresponding to the power-off operation is transmitted during the predetermined time period after business hours. Therefore, the karaoke devices 20B-20D are not accidentally powered off during the predetermined time period before business hours, and the karaoke devices 20B-20D are not accidentally powered on during the predetermined time period after business hours.

[0049] In each embodiment and modification, power off includes not only a power off state but also a standby state.

[0050] In addition, in each embodiment and modification, the opening time is set as the first time and the closing time is set as the second time, but any time can be set as the first and second times. For example, the break start time may be set as the first time, and the break end time may be set as the second time.

[0051] In each embodiment and modification, a program may be installed in the karaoke system to add a narration playback function and a narration subtitle display function to the karaoke system. The program is stored in a storage medium. The storage medium is not particularly limited, and may be a non-transitory storage medium such as an optical disk, a magneto-optical disk, or a flash memory.

[0052] Although the present embodiment has been described, other embodiments may be obtained by combining the above-described embodiments and modifications in whole or in part.

[0053] In addition, the technology of the present invention is not limited to the above-mentioned embodiment, and may be variously changed, substituted, or modified within the scope of the gist of the technical idea. Furthermore, if the technical idea can be realized in a different way due to the progress of technology or a different technology derived therefrom, it may be implemented using that method. Therefore, the claims cover all embodiments that can be included in the scope of the technical idea. [Explanation of symbols]

[0054] 10: Karaoke system 20A: Karaoke equipment (one karaoke equipment) 20B-20D: Karaoke equipment (other karaoke equipment) 22B-22D: Power supply control section 23A: Setting section 24A: Transmitter 25A: Transmission control section

Claims

1. A karaoke system in which a plurality of karaoke devices are communicatively connected, One karaoke machine, a setting unit that accepts settings of a first time and a second time that is later than the first time; a transmitting unit for transmitting an operation signal corresponding to a power operation by an employee to other karaoke devices; a transmission control unit that controls the transmission unit to prohibit transmission of an operation signal when a power operation is performed between a first time point and a second time point, Other karaoke machines A karaoke system comprising a power supply control unit that controls the power supply in response to a power supply operation or an operation signal by an employee.

2. the setting unit accepts settings of a third time that is earlier than the first time and a fourth time that is later than the second time; The karaoke system of claim 1, wherein the transmission control unit controls the transmission unit to prohibit transmission of an operation signal when a power operation is performed during a time period other than between the third time and the first time or between the second time and the fourth time.

3. The one karaoke device, a storage unit that stores an operation history in which the operation content of a power supply operation is associated with the operation time, 3. The karaoke system according to claim 2, wherein the setting unit sets the third time and the fourth time based on an operation history.

4. The karaoke system of claim 2 or 3, characterized in that the transmission control unit controls the transmission unit to prohibit transmission of an operation signal when a power-off operation is performed between a third time and a first time, and to prohibit transmission of an operation signal when a power-on operation is performed between a second time and a fourth time.

Images