DISPLAY DEVICE FOR MUSICAL INSTRUMENT AND DISPLAY SWITCHING METHOD OF DISPLAY DEVICE FOR MUSICAL INSTRUMENT

Abstract

Display device for a musical instrument (1), comprising: a touch panel (20) having a backlight and a film (22) provided above the backlight, and a switch (110) that switches a visual appearance of the touch panel (20) between a first appearance mode and a second appearance mode, wherein the touch panel (20) is operative in both the first appearance mode and the second appearance mode, such that when the touch panel (20) is in the first appearance mode, the touch panel has a first visual appearance, and when the touch panel (20) is in the second appearance mode, the touch panel has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel (20) in the first appearance mode and the second visual appearance of the touch panel (20) in the second appearance mode, the second visual appearance of the touch panel (20) in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument (1) arranged next to the touch panel (20) than the first visual appearance of the touch panel (20) in the first appearance mode, wherein the film (22) has a color or pattern similar to the visual appearance of the section of the musical instrument, and the visual appearance of the touch panel (20) assumes the second visual appearance when the backlight is not illuminated.

Description

STATE OF THE ARTTechnical field

[0001] The present disclosure relates to a display device for a musical instrument that displays setting information of the musical instrument, etc., and a display switching method of the display device for a musical instrument. Description of the related art

[0002] An electronic musical instrument such as an electronic organ has an operation panel in which operation buttons, etc., are arranged. The operation panel contains, for example, the operation buttons and switches and can accept various operations related to the electronic musical instrument. A player can use various functions included in the electronic musical instrument by operating the operation panel.

[0003] Furthermore, an operation panel of an electronic device, etc., may be of the touch panel type, and operation buttons and current setting contents are displayed on a touch panel. JP 2006-146701 A discloses an operation input device included in a portable music player. This portable music player includes a touch panel operation unit, whereby an operation can be accepted with respect to the portable music player.

[0004] JP 2017-181651 A discloses a display device for a musical instrument with a touch panel that, instead of various control elements, can also display a decorative surface as image content that resembles the surface of the musical instrument's casing. However, the appearance of such a surface as image content appears significantly less high-quality than, for example, a correspondingly painted or polished surface itself. SUMMARY

[0005] As described above, an electronic musical instrument such as an electronic organ has an operation panel, which enables it to accept operation from a player and perform various functions. For example, an electronic organ has various functions that are not available in an acoustic piano. Nowadays, many players are attracted to the traditional design or appearance of a musical instrument such as an acoustic piano. If both the excellent functions of an electronic musical instrument and the visually appealing appearance of a traditional musical instrument can be provided, a player is expected to feel satisfied and enjoy a function of the electronic musical instrument.

[0006] An object of the present disclosure is to provide a display device for a musical instrument that can provide both functions of an electronic musical instrument and a visually appealing appearance of a traditional musical instrument.

[0007] A display device for a musical instrument according to one aspect of the present disclosure is defined in claim 1. Another aspect of the present invention provides a display device according to claim 6. Advantageous embodiments may be configured according to one of the subclaims.

[0008] Other features, elements, characteristics and advantages of the present disclosure will become more apparent from the following description of preferred embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWING Fig. 1 is a diagram showing the appearance of an electronic musical instrument; Fig. 2 is a diagram showing the appearance of the electronic musical instrument; Fig. 3 is a cross-sectional side view of a touch panel; Fig. 4 is a block diagram showing the configuration of the electronic musical instrument; Fig. 5 is a flowchart showing a display switching method according to a first embodiment; Fig. 6 is a flowchart showing the display switching method according to the first embodiment; Fig. 7 is a flowchart showing the display switching method according to the first embodiment; Fig. 8 is a flowchart showing the display switching method according to the first embodiment; Fig. 9 is a diagram showing a display state of a display device for a musical instrument according to a second embodiment; Fig. 10 is a diagram showing the appearance of an electronic musical instrument according to a third embodiment; Fig. 11 is a diagram showing the appearance of an electronic musical instrument according to a fourth embodiment; Fig. 12 is a flowchart showing a method of opening / closing the cover according to the third and fourth embodiments; Fig. 13 is a flowchart showing a method of opening / closing the cover according to the third and fourth embodiments; Fig. 14 is a flowchart showing the cover opening / closing method according to the third and fourth embodiments; and Fig. 15 is a flowchart showing the cover opening / closing method according to the third and fourth embodiments. DETAILED DESCRIPTIONFirst Embodiment(1) Configuration of the electronic musical instrument

[0009] A display device for a musical instrument according to a first embodiment of the present disclosure will be described in detail below with reference to the drawings. Fig. 1 is a diagram showing the appearance of an electronic musical instrument 1 according to the embodiment. The electronic musical instrument 1 is an electronic organ in the present embodiment. The electronic musical instrument 1 includes a keyboard 10 and a touch panel 20. The appearance of the electronic musical instrument 1 consists of an outer member 5 near the keyboard 10 and the touch panel 20. The outer member 5 has a soothing color such as dark brown or black. Alternatively, a member in a light color such as white may be used for the outer member 5. Further, the outer member 5 is, for example, a member with a wood pattern. The touch panel 20 is arranged to be adjacent to the outer member 5.

[0010] The touch panel 20 displays operation buttons for performing various setting operations related to the electronic musical instrument 1. The touch panel 20 also displays information such as a working function or a working mode in the electronic musical instrument 1. The touch panel 20 is positioned to the side of the keyboard 10. That is, the touch panel 20 is located at a position corresponding to a side cheek (or "hyoshigi" in Japanese) in the case of an acoustic piano. Fig. 1, the touch panel 20 displays various information, and a player or a person near the electronic musical instrument 1 can input an operation related to the electronic musical instrument 1 or check a working state of the electronic musical instrument 1, etc. The Fig. The state shown in Figure 1, in which the touch panel 20 is illuminated and displays various information, is referred to as the first mode.

[0011] Fig. Figure 2 is a diagram showing the appearance of the electronic musical instrument 1, wherein the touch panel 20 does not display the information. In the touch panel 20, a backlight is not lit, and the appearance of the touch panel 20 is changed to the appearance similar to the outer element 5. That is, the information is not displayed in the touch panel 20, and the touch panel 20 appears to be similar to a side panel of an acoustic piano. The Fig. The state shown in Figure 2, in which the touch panel 20 is not illuminated and does not display information, is referred to as the second mode. The appearance of the touch panel 20 in the second mode is similar to the appearance of the outer element 5 compared to the appearance of the touch panel 20 in the first mode.

[0012] The following examples are mentioned as a case where the appearance of the touch panel 20 in the second mode is similar to the appearance of the outer element 5 compared to the appearance of the touch panel 20 in the first mode. In an example, as shown in the Fig. 1 and Fig. 2, the information is displayed in the first mode, and the information is not displayed in the second mode. Alternatively, the size of a field for displaying the information may be reduced for the second mode compared to the first mode. In another example, the degree to which the color of the touch panel 20 blends with the color of the outer element 5 in the second mode is higher than the degree to which the color of the touch panel 20 blends with the color of the outer element 5 in the first mode. In other words, the degree of correlation between the color of the touch panel 20 and the color of the outer element 5 in the second mode is higher than the degree of correlation between the color of the touch panel 20 and the color of the outer element 5 in the first mode.Furthermore, in another example, the degree to which the pattern of the touch panel 20 blends with the pattern of the outer member 5 in the second mode is higher than the degree to which the pattern of the touch panel 20 blends with the pattern of the outer member 5 in the first mode. In other words, the degree of correlation between the pattern of the touch panel 20 and the pattern of the outer member 5 in the second mode is higher than the degree of correlation between the pattern of the touch panel 20 and the pattern of the outer member 5 in the first mode. For example, assume that the touch panel 20 is displayed in the second mode to have a wood pattern in a case where the outer member 5 has a wood pattern. (2) Configuration of the touch panel

[0013] Fig. 3 is a cross-sectional side view of the touch panel 20. While the touch panel 20 in the present embodiment is of the resistance film type, for example, the touch panel 20 may be of the capacitance type. As shown in Fig. 3, in the touch panel 20, a film 22 is provided over an LCD glass laminate 21. The film 22 is, for example, a black film, and open portions 22A are formed in the film 22 by cutting out characters, symbols, etc. In a lower portion of the LCD glass laminate 21, a plurality of ribs 23 are provided, and LEDs 24 for backlighting are arranged in spaces separated by the ribs 23.

[0014] Since the touch panel 20 has such a configuration, it can display characters and symbols formed by the open portions 22A as information by illuminating the LEDs 24. Furthermore, the characters, symbols, etc. formed by the open portions 22A are separated by the ribs 23. Therefore, when a part of the LEDs 24 is lit, the light from the LED 24 does not leak to the characters, symbols, etc. formed by adjacent open portions 22A, so that only the character or symbol corresponding to the lit LED 24 can be clearly displayed.

[0015] The film 22 is a black film as described above. The film 22 can also be dark brown or have a wood pattern. Alternatively, the film 22 can have a light color such as white. The film 22 preferably has a color similar to the outer element 5. Alternatively, the film 22 preferably has a pattern similar to the outer element 5. When the touch panel 20 is not illuminated because the LED 24 is not illuminated, the appearance of the film 22 becomes the appearance of the touch panel 20. (3) Functional configuration of the electronic musical instrument

[0016] Next, the functional configuration of the electronic musical instrument 1 is described. Fig. 4 is a block diagram showing the functional configuration of the electronic musical instrument 1. The electronic musical instrument 1 includes the keyboard 10, the touch panel 20, a performance input unit 101, a tone generator 104, a sound system 105, a CPU (Central Processing Unit) 106, a RAM (Random Access Memory) 107, a ROM (Read Only Memory) 108, and a timer 109. The touch panel 20 includes an operation input unit 102 and a display 103.

[0017] The performance input unit 101 receives musical performance operation information from the keyboard 10. The performance input unit 101 outputs musical performance data representing the content of a musical performance based on the musical performance operation information. The musical performance data consists of MIDI (Musical Instrument Digital Interface) data or audio data. The operation input unit 102 receives operations for setting a musical performance sound, selecting an auto accompaniment sound, adjusting the volume of an auto accompaniment sound, playing a musical performance demonstration sound, turning a power on / off, and various settings. The display 103 displays various information related to a musical performance or settings, for example. The touch panel 20 consists of the operation input unit 102 and the display 103.The presentation input unit 101, the operation input unit 102 and the display 103 are connected to a bus 120.

[0018] The RAM 107 is made of, for example, volatile memory and is used as a work area when the CPU 106 executes a program and temporarily stores various data. The ROM 108 is made of, for example, non-volatile memory and stores a computer program such as a switching program P1 and various data. A flash memory such as EEPROM is used as the ROM 108. The CPU 106 executes the switching program P1 stored in the ROM 108 while using the RAM 107 as a work area, thereby performing a display switching process described below. The CPU 106, the RAM 107, and the ROM 108 are connected to the bus 120. The CPU 106, the RAM 107, and the ROM 108 constitute a switcher 110. The touch panel 20 and the switcher 110 constitute the display device 100 for a musical instrument.

[0019] The tone generator 104 is connected to the bus 120, and the sound system 105 is connected to the tone generator 104. The tone generator 104 generates a musical sound signal based on the musical performance data received from the performance input unit 101. The sound system 105 includes a digital-to-analog (D / A) conversion circuit, an amplifier, and a speaker. The sound system 105 converts the musical sound signal supplied by the tone generator 104 into an analog sound signal and generates a sound based on the analog sound signal. Thus, the musical sound signal is reproduced. The timer 109 is connected to the bus 120 and measures an elapsed time in response to an instruction provided by the switch 110. (4) Display switching method

[0020] Fig. 5 to 8 are flowcharts showing the display switching method according to the first embodiment. The display switching method of the Fig. 5 to 8 is from the Fig. 4 shown switch 110. First, Fig. 5. In step S101, the switch 110 determines whether a power-on operation is detected in the operation input unit 102. If the power-on operation is detected, the switch 110 turns on the light of the touch panel 20 (step S102). Then, the switch 110 starts the timer 109 (step S103). Thus, the timer 109 starts measuring an elapsed time for maintaining a lit state of the touch panel 20.

[0021] In a case where the power-on operation is not detected in step S101, the changeover switch 110 determines whether a power-off operation has been detected in the operation input unit 102 in step S104. In a case where the power-off operation has been detected, the changeover switch 110 turns off the light of the touch panel 20 (step S105). Then, the changeover switch 110 stops the timer 109 (step S106). Further, the changeover switch 110 stops the work in progress (step S107). For example, the playback of the demonstration of a musical performance or the playback of an automatic accompaniment sound is stopped.

[0022] In a case where the operation to turn off the power supply is not detected in step S104, the switch 110 determines whether the timer 109 is active and whether the elapsed time measured by the timer 109 has exceeded a predetermined time (step S108). In a case where the predetermined time has elapsed, the switch 110 turns off the light of the touch panel 20 (step S109). Then, the switch 110 stops the timer 109 (step S110). In step S109, in a case where the timer 109 is not active, or in a case where the timer is active but the predetermined time has not elapsed, the process proceeds to step S201 of Fig. 6. Further, after step S103, step S107, or step S110, the process returns to step S101.

[0023] Next, Fig. 6. In step S201, the switcher 110 determines whether a start of execution of a predetermined function has been detected. The predetermined function is a function to be executed when the touch panel 20 is lit at all times. For example, playback of a demonstration of a musical performance, recording, etc. is set as the predetermined function. In a case where a start of execution of a predetermined function has been detected, the switcher 110 stops the timer 109 (step S202). Then, the switcher 110 turns on the light of the touch panel 20 (step S203). Further, the switcher 110 sets an execution flag indicating the execution of a predetermined function to an ON state (step S204).

[0024] In step S201, in a case where a start of execution of a predetermined function has not been detected, the switch 110 determines whether an end of execution of a predetermined function has been detected (step S205). In a case where an end of execution of a predetermined function has been detected, the switch 110 starts the timer 109 (step S206). That is, since the execution of a predetermined function has been completed, the timer 109 is started so that the touch panel 20 does not light up after a predetermined period of time has elapsed from the end of execution of the predetermined function. Furthermore, the switch 110 sets the execution flag indicating the execution of a predetermined function to an OFF state (step S207). In a case where an end of execution of a predetermined function has not been detected in step S205, the process proceeds to step S301 of Fig. 7. Further, after step S204 or step S207, the process returns to step S101.

[0025] Next, Fig. 7. In step S301, the switch 110 determines whether a panel operation has been detected with respect to the touch panel 20. That is, the switch 110 determines whether the input of an operation has been detected with respect to the operation input unit 102. In a case where a panel operation is detected, the switch 110 determines whether an execution flag of a predetermined function is in an OFF state (step S302). In a case where the execution flag is in the OFF state, the switch 110 determines whether the touch panel 20 is not lit (step S303). In a case where the touch panel 20 is not lit, the switch 110 turns on the light of the touch panel 20 (step S304). That is, in a case where a panel operation is executed with the execution flag in the OFF state, the light of the touch panel 20 is turned on when the touch panel 20 is not lit.Then, the switch 110 starts the timer 109 (step S305). Thus, the measurement of the predetermined period is started from the time the light of the touch panel 20 is turned on. In a case where it is determined that the touch panel 20 is lit in step S303, the switch 110 resets the timer 109 (step S306). That is, although the touch panel 20 is lit, the measurement of a predetermined period is reset because a panel operation is newly executed (the measurement starts from 0).

[0026] After the measurement of the predetermined period of time has been started in step S305 and step S306, the process executed by the switch 110 proceeds to step S401 of Fig. 8. In a case where no panel operation was detected in step S301, the process proceeds to step S401 of Fig. 8. Further, the CPU 106 executes the process from step SA1 to step SA3 after step S305 and step S306 executed by the changeover switch 110. First, the CPU 106 detects an operation position with respect to the touch panel 20 (step SA1). Then, the CPU 106 specifies a function or setting corresponding to the operation position (step SA2). In a case where the specified function is executable, the CPU 106 executes the specified function. Alternatively, in a case where the specified setting is adjustable, the CPU 106 makes the specified setting (step SA3).

[0027] Next, Fig. 8. In step S401, the switcher 110 determines whether a musical performance sound is output. The switcher 110 determines the output state of a musical performance sound based on whether the performance input unit 101 receives musical performance operation information. In a case where a musical performance sound is output, the switcher 110 determines whether an execution flag of a predetermined function is in an OFF state (step S402). In a case where the execution flag is in the OFF state, the switcher 110 determines whether the touch panel 20 is lit (step S403). In a case where the touch panel 20 is lit, the switcher 110 turns off the light of the touch panel 20 (step S404). That is, in a case where a musical performance sound is output while the execution flag is in the OFF state, the light of the touch panel 20 is turned off.Then, the switch 110 stops the timer 109 (step S405). After step S405, the process returns to step S101 of FIG. Fig. 5. In a case where no musical performance sound is output in step S401, in a case where the execution flag is in an ON state in step S402, or in a case where it is determined in step S403 that the touch panel 20 is not lit, the process returns to step S101 of Fig. 5 back. (5) Effects of the first embodiment

[0028] As described above, the display device 100 for a musical instrument according to the present embodiment includes the touch panel 20 arranged to be adjacent to the outer member 5 that constitutes the appearance of the electronic musical instrument 1. Then, the switch 110 included in the display device 100 for a musical instrument switches the appearance of the touch panel 20 between the first mode and the second mode, in which the appearance of the touch panel 20 is more similar to that of the outer member 5 than in the first mode. Thus, in the second mode, the touch panel 20 has a visually pleasing appearance in which the touch panel 20 blends with the outer member 5 of the electronic musical instrument 1. The player can operate the electronic musical instrument 1 while experiencing a feeling similar to that of playing an acoustic piano.

[0029] Further, the changeover switch 110 switches, as in steps S301 to step S306 of Fig. 7, the appearance of the touch panel 20 changes from the second mode to the first mode when an operation is detected with respect to the touch panel 20. Since the touch panel 20 lights up when the player performs an operation on the touch panel 20, the player can easily perform an operation on the touch panel 20.

[0030] Furthermore, as in steps S201 to step S207 of Fig. As shown in Figure 6, the appearance of the touch panel 20 switches from the second mode to the first mode during the execution of a specific function in the electronic musical instrument 1. The touch panel 20 lights up during the execution of a specific function that requires information to be displayed on the touch panel 20. The player can check the execution status of the specific function on the touch panel 20.

[0031] Furthermore, as in steps S108 to step S110 of Fig. 5, in a case where an operation performed on the touch panel 20 has not been detected within a predetermined period of time, or in a case where the predetermined period of time has elapsed since the end of the execution of a specific function, the appearance of the touch panel 20 switches from the first mode to the second mode. When the player does not need to perform an operation on the touch panel 20 or when a specific function is not executed, the appearance of the touch panel 20 becomes more similar to the outer member 5 of the electronic musical instrument 1. The player can operate the electronic musical instrument 1 with a visually appealing appearance while enjoying a feeling similar to that of playing an acoustic piano.

[0032] Further, the changeover switch 110 switches, as in steps S401 to step S405 of Fig. 8, the appearance of the touch panel 20 changes from the first mode to the second mode during the output of a musical performance sound in the electronic musical instrument 1. Since the appearance of the touch panel 20 is similar to the appearance of the outer member 5 during a musical performance, the player can enjoy a musical performance while having a feeling similar to that of playing an acoustic piano.

[0033] Furthermore, the switch 110 turns on the light of the touch panel 20 in the first mode and turns off the light of the touch panel 20 in the second mode. In this way, it is possible to change the appearance of the touch panel 20 to resemble the outer element 5 by changing the lighting mode of the touch panel 20.

[0034] Furthermore, in the first mode, the touch panel 20 of the electronic musical instrument 1 displays the information to be visible to an information presentation subject. Here, the information presentation subject is the player playing the electronic musical instrument 1 or an audience listening to a musical performance sound of the electronic musical instrument 1. In this way, the touch panel 20 presents the information to the information presentation subject in the first mode and is switched to have the appearance similar to the outer element 5 in the second mode. Second embodiment(1) Switch display by polarizer

[0035] Next, a display device 100 for a musical instrument according to a second embodiment of the present disclosure will be described. In the display device 100 for a musical instrument according to the second embodiment, the touch panel 20 includes a polarizer. The configuration of the rest of the display device 100 for a musical instrument is similar to that of the first embodiment.

[0036] Fig. Fig. 9 is a diagram showing the appearance state of the touch panel 20 according to the second embodiment. The touch panel 20 according to the second embodiment includes the polarizer, and the appearance state changes depending on the position of a viewer viewing the touch panel 20. Fig. 9 indicates "black" that the touch panel 20 appears to the viewer close to the appearance of the outer element 5, ie the touch panel 20 is in the second mode. In Fig. 9 indicates “sign” that the touch panel 20 is displaying information visible to the viewer, that is, the touch panel 20 is in the first mode.

[0037] In the example of Fig. 9, in a case where the performer is seated in a left position and an audience is standing near the touch panel 20, the appearance state of the touch panel 20 is similar to that of the first embodiment. That is, the appearance of the touch panel 20 to the viewer is in the second mode when the power is turned off after a predetermined period of time has elapsed since the power was turned on during a musical performance, or after a predetermined period of time has elapsed since a panel operation was performed. Furthermore, the appearance of the touch panel 20 to the viewer is in the first mode when the power is turned on, when a panel operation is detected, or in a case where a predetermined period of time has not elapsed since a panel operation was performed.

[0038] In contrast, in a case where the player sits near the center or in a right position and an audience stands near the center or near the right side of the electronic musical instrument 1, the appearance of the touch panel 20 to the viewer is in the second mode due to the effect of the polarizer. The viewer can play the electronic musical instrument 1 or listen to and watch a musical performance of the electronic musical instrument 1 while experiencing a feeling similar to that of watching an acoustic piano. (2) Effects of the second embodiment

[0039] As described above, in the display device 100 for a musical instrument of the second embodiment, the touch panel 20 includes the polarizer so that the touch panel 20 can be in the second mode at any time depending on the position of the viewer. Fig. 9, the touch panel 20 may be in the second mode in the display device 100 for a musical instrument at any time during a period in which the player is performing a musical performance while sitting near the center or in the right position. Furthermore, in the example shown in Fig. 9, during a period in which the audience is standing near the center or near the right side of the electronic musical instrument 1, the touch panel 20 may be in the second mode at all times in the display device 100 for a musical instrument. Third and fourth embodiments (1) Configuration of the electronic musical instrument

[0040] Fig. 10 is a diagram showing the appearance of an electronic musical instrument 1A of a third embodiment. Fig. Fig. 11 is a diagram showing the appearance of an electronic musical instrument 1B of a fourth embodiment. As shown in Fig. 10(A), in the electronic musical instrument 1A, a cover 30A is attached to a touch panel 20. In Fig. 10(A), the touch panel 20 is covered by the cover 30A. The appearance of the cover 30A is in the second mode and is similar to the appearance of an outer element 5. As in Fig. As shown in Figure 10(B), the cover 30A opens to expose the touch panel 20. In the third embodiment, the touch panel 20 is set to the first mode when the cover 30A is opened, and is set to the second mode when the cover 30A is closed.

[0041] As in Fig. 11(A), in the electronic musical instrument 1B of the fourth embodiment, a touch panel 20 is covered by a cover 30B. As shown in Fig. As shown in Fig. 11(B), the cover 30B opens to expose the touch panel 20. Also in the fourth embodiment, the touch panel 20 is set to the first mode when the cover 30B is opened, and is set to the second mode when the cover 30B is closed.

[0042] The configurations of the electronic musical instruments 1A and 1B of the third and fourth embodiments are also similar to those of the electronic musical instrument 1 of the Fig. 4. However, a switch 110 of the electronic musical instrument 1A or 1B switches the appearance of the touch panel 20 between the first mode and the second mode by opening and closing the cover 30A or 30B. (2) Cover opening / closing procedure

[0043] Fig. 12 to 15 are flowcharts showing the cover opening / closing method according to the third and fourth embodiments. Since the following description applies to both the third and fourth embodiments, the covers 30A and 30B are collectively referred to as the cover 30. The cover opening / closing method of Fig. 12 to 15 is from the Fig. 4 shown switch 110. In step S501 of Fig. 12, the changeover switch 110 determines whether a power-on operation has been detected. If a power-on operation has been detected, the changeover switch 110 turns on the light of the touch panel 20 (step S502), opens the cover 30 (step S503), and starts the timer 109 (step S504).

[0044] In a case where the power-on operation is not detected in step S501, the changeover switch 110 determines whether the power-off operation is detected in step S505. In a case where the power-off operation is detected, the changeover switch 110 turns off the light of the touch panel 20 (step S506) and stops the timer 109 (step S507). Further, the changeover switch 110 closes the cover 30 (step S508) and stops the work in progress (step S509).

[0045] In a case where the operation to turn off the power supply was not detected in step S505, the changeover switch 110 determines whether the timer 109 is active and whether the elapsed time measured by the timer 109 has exceeded a predetermined time (step S510). In a case where the predetermined time has elapsed, the changeover switch 110 closes the cover 30 (step S511) and stops the timer 109 (step S512). In step S510, in a case where the timer 109 is not active, or in a case where the timer is active but the predetermined time has not elapsed, the process proceeds to step S601 of Fig. 13 continued.

[0046] In step S601 of Fig. 13, the switch 110 determines whether a start of execution of a predetermined function has been detected. In a case where a start of execution of a predetermined function has been detected, the switch 110 stops the timer 109 (step S602). In a case where the cover 30 is closed, the switch 110 opens the cover (step S603) and sets an execution flag to an ON state (step S604). In step S601, in a case where a start of execution of a predetermined function has not been detected, the switch 110 determines whether an end of execution of a predetermined function has been detected (step S605). In a case where an end of execution of a predetermined function has been detected, the switch 110 starts the timer 109 (step S606) and sets an execution flag to an OFF state (step S607). In step S605, the process proceeds to step S702 in one case of Fig. 14 in which an end of the execution of a predetermined function was not detected.

[0047] In step S701 of Fig. 14, the switch 110 determines whether an operation to open the cover 30 has been detected. In a case where an operation to open the cover 30 has been detected, the switch 110 opens the cover 30 (step S702) and starts the timer 109 (step S703). For example, if the player presses down a predetermined portion of the cover 30, the switch 110 detects an opening operation. The cover 30 includes a driver (not shown) and performs an opening / closing operation under the control of the switch 110. In a case where no operation to open the cover 30 has been detected in step S701, the switch 110 determines whether a panel operation with respect to the touch panel 20 has been detected (step S704). In a case where a panel operation has been detected, the switch 110 determines whether an execution flag of a predetermined function is in the OFF state (step S705).In a case where the execution flag is in the OFF state, the switch 110 resets the timer 109 (step S706). After step S705 or step S706, the process executed by the switch 110 proceeds to step S801 of FIG. Fig. 15. Further, after steps S705 and S706 executed by the switch 110, the CPU 106 detects an operation position with respect to the touch panel 20 (step SB1) and specifies a function or setting corresponding to the operation position (step SB2). In a case where the specified function is executable, the CPU 106 executes the specified function. Alternatively, in a case where the specified setting is adjustable, the CPU 106 makes the specified setting (step SB3).

[0048] In step S801 of Fig.15, the changeover switch 110 determines whether a musical performance sound is output. In a case where a musical performance sound is output, the changeover switch 110 determines whether an execution flag of a predetermined function is in the OFF state (step S802). In a case where the execution flag is in the OFF state, the changeover switch 110 determines whether the cover 30 is opened (step S803). In a case where the cover 30 is open, the changeover switch 110 closes the cover 30 (step S804) and stops the timer 109 (step S805). (3) Effects of the third and fourth embodiments

[0049] In the electronic musical instrument 1A or 1B of the third embodiment, the cover 30A or 30B closes, so that the touch panel 20 has a visually appealing appearance in which the touch panel 20 blends with the outer member 5 of the electronic musical instrument 1. The player can operate the electronic musical instrument 1A or 1B while experiencing a feeling similar to that of playing an acoustic piano. Correspondences between components in claims and parts in preferred embodiments

[0050] The following paragraphs explain non-limiting examples of correspondences between various elements listed in the claims below and the elements described above with respect to various preferred embodiments of the present disclosure.

[0051] In the above-mentioned embodiment, detecting an operation on the touch panel 20 or performing a specific function is an example of a first condition. In the above-mentioned embodiment, playing back a demonstration of a musical performance, recording, etc. are examples of the predetermined function. The first mode is an example of a first appearance mode, and the second mode is an example of a second appearance mode. The appearance of the touch panel 20 in the first mode is an example of a first visual appearance, and the appearance of the touch panel 20 in the second mode is an example of a second visual appearance. Properties of embodiments

[0052] The display device for a musical instrument and the display switching method of the display device for a musical instrument of the above-mentioned embodiments of the present disclosure include the following features.

[0053] A display device for a musical instrument according to one aspect of the present disclosure includes a touch panel and a switch that switches a visual appearance of the touch panel between a first appearance mode and a second appearance mode, wherein the touch panel is operative in both the first appearance mode and the second appearance mode, such that in a case where the touch panel is in the first appearance mode, the touch panel has a first visual appearance, and in a case where the touch panel is in the second appearance mode, the touch panel has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel in the first appearance mode and the second visual appearance of the touch panel in the second appearance mode,the second visual appearance of the touch panel in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument arranged adjacent to the touch panel than the first visual appearance of the touch panel in the first appearance mode.

[0054] The switch may switch the visual appearance of the touch panel from the second appearance mode to the first appearance mode in a case where a first condition is met, wherein the first condition includes the detection of an actuation with respect to the touch panel.

[0055] The first condition may involve the execution of a predetermined function in the musical instrument.

[0056] The switcher can switch the visual appearance of the touch panel from the first appearance mode to the second appearance mode in a case where the first condition remains unfulfilled for a predetermined period of time.

[0057] The switch can cause the touch panel to be operated in the second appearance mode during a period in which the musical instrument is performing a musical performance.

[0058] The switch can change a lighting mode of the touch panel between the first appearance mode and the second appearance mode.

[0059] The switch may include a polarizer incorporated in the touch panel, and the visual appearance of the touch panel may switch between the first and second appearance modes depending on the position of a viewer.

[0060] The touch panel can display information that can be displayed to an information presentation subject in the first appearance mode.

[0061] The portion of the musical instrument located adjacent to the touch panel may be an external element of the musical instrument.

[0062] A size of a field for displaying information on the touch panel can be reduced for the second appearance mode compared to the first appearance mode.

[0063] A degree of correlation between a color of the touch panel and a color of the section of the musical instrument arranged next to the touch panel in the second appearance mode is higher than the degree of correlation between the color of the touch panel and the color of the section of the musical instrument arranged next to the touch panel in the first appearance mode.

[0064] A degree of correlation between a pattern of the touch panel and a pattern of the portion of the musical instrument arranged next to the touch panel in the second appearance mode may be higher than the degree of correlation between the pattern of the touch panel and the pattern of the portion of the musical instrument arranged next to the touch panel in the first appearance mode.

[0065] The pattern of the touch panel can be a wood pattern in the second appearance mode.

[0066] A method for operating a touch panel of a musical instrument according to another aspect of the present disclosure includes switching a visual appearance of the touch panel between a first appearance mode and a second appearance mode, wherein the touch panel is operated in both the first appearance mode and the second appearance mode, such that in a case where the touch panel is in the first appearance mode, the touch panel has a first visual appearance, and in a case where the touch panel is in the second appearance mode, the touch panel has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel in the first appearance mode and the second visual appearance of the touch panel in the second appearance mode,the second visual appearance of the touch panel in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument arranged adjacent to the touch panel than the first visual appearance of the touch panel in the first appearance mode.

[0067] While preferred embodiments of the present disclosure have been described above, it is understood that variations and modifications will be apparent to those skilled in the art without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is therefore to be determined solely by the following claims.

Claims

[1] Display device for a musical instrument (1), comprising: a touch panel (20) having a backlight and a film (22) provided above the backlight, and a switch (110) that switches a visual appearance of the touch panel (20) between a first appearance mode and a second appearance mode, wherein the touch panel (20) is operative in both the first appearance mode and the second appearance mode, such that when the touch panel (20) is in the first appearance mode, the touch panel has a first visual appearance, and when the touch panel (20) is in the second appearance mode, the touch panel has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel (20) in the first appearance mode and the second visual appearance of the touch panel (20) in the second appearance mode, the second visual appearance of the touch panel (20) in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument (1) arranged next to the touch panel (20) than the first visual appearance of the touch panel (20) in the first appearance mode, wherein the film (22) has a color or pattern similar to the visual appearance of the section of the musical instrument, and the visual appearance of the touch panel (20) assumes the second visual appearance when the backlight is not illuminated. [2] A display device for a musical instrument (1) according to claim 1, wherein the switch (110) switches the visual appearance of the touch panel (20) from the second appearance mode to the first appearance mode in a case where a first condition is satisfied, the first condition including the detection of an operation with respect to the touch panel (20). [3] A display device for a musical instrument (1) according to claim 2, wherein the first condition includes the execution of a predetermined function in the musical instrument (1). [4] A display device for a musical instrument (1) according to claim 2 or 3, wherein the switch (110) switches the visual appearance of the touch panel from the first appearance mode to the second appearance mode in a case where the first condition remains unsatisfied for a predetermined period of time. [5] A display device for a musical instrument (1) according to any one of claims 1 to 4, wherein the changeover switch (110) causes the touch panel (20) to be operated in the second appearance mode during a period in which the musical instrument is performing a musical performance. [6] Display device for a musical instrument (1), comprising: a touch panel (20), and a switch (110) that switches a visual appearance of the touch panel (20) between a first appearance mode and a second appearance mode, wherein the touch panel (20) is operative in both the first appearance mode and the second appearance mode, such that in a case where the touch panel (20) is in the first appearance mode, the touch panel (20) has a first visual appearance, and in a case where the touch panel (20) is in the second appearance mode, the touch panel (20) has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel (20) in the first appearance mode and the second visual appearance of the touch panel (20) in the second appearance mode, the second visual appearance of the touch panel (20) in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument (1) arranged next to the touch panel (20) than the first visual appearance of the touch panel (20) in the first appearance mode, wherein the switch includes a polarizer contained in the touch panel (20) and switches the visual appearance of the touch panel between the first and second appearance modes depending on the position of a viewer. [7] A display device for a musical instrument (1) according to any one of claims 1 to 6, wherein the touch panel (20) displays information that can be displayed for an information presentation subject in the first appearance mode. [8] A display device for a musical instrument (1) according to claim 1 or claim 6, wherein the portion of the musical instrument disposed adjacent to the touch panel is an external member (5) of the musical instrument (1). [9] A display device for a musical instrument (1) according to claim 1 or claim 6, wherein a size of a field for displaying information on the touch panel (20) is reduced for the second appearance mode compared to the first appearance mode. [10] A display device for a musical instrument (1) according to claim 1 or claim 6, wherein a degree of correlation between a color of the touch panel (6) and a color of the portion of the musical instrument (1) located adjacent to the touch panel in the second appearance mode is higher than the degree of correlation between the color of the touch panel and the color of the portion of the musical instrument (1) located adjacent to the touch panel (20) in the first appearance mode. [11] A display device for a musical instrument (1) according to claim 1 or claim 6, wherein a degree of correlation between a pattern of the touch panel and a pattern of the portion of the musical instrument (1) located adjacent to the touch panel (20) in the second appearance mode is higher than the degree of correlation between the pattern of the touch panel (20) and the pattern of the portion of the musical instrument located adjacent to the touch panel (20) in the first appearance mode. [12] A display device for a musical instrument according to claim 11, wherein the pattern of the touch panel (20) in the second appearance mode is a wood pattern. [13] Method for operating a touch panel (20) of a musical instrument (1), the method comprising: Switching a visual appearance of the touch panel (20) between a first appearance mode and a second appearance mode, wherein the touch panel (20) is operative in both the first appearance mode and the second appearance mode, such that when the touch panel (20) is in the first appearance mode, the touch panel (20) has a first visual appearance, and when the touch panel (20) is in the second appearance mode, the touch panel (20) has a second visual appearance that is different from the first visual appearance, wherein, of the first visual appearance of the touch panel (20) in the first appearance mode and the second visual appearance of the touch panel (20) in the second appearance mode, the second visual appearance of the touch panel (20) in the second appearance mode is more similar to a visual appearance of a portion of the musical instrument (1) arranged next to the touch panel (20) than the first visual appearance of the touch panel (20) in the first appearance mode, wherein a touch panel (20) is provided as the touch panel (20) which has a backlight and a film (22) provided above the backlight, wherein the film (22) has a color or pattern similar to the visual appearance of the section of the musical instrument, and the visual appearance of the touch panel (20) assumes the second visual appearance when the backlight is not illuminated.

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