JP5082525B2 - Electronic keyboard instrument and program for realizing the control method - Google Patents

Description

  The present invention relates to an electronic keyboard instrument that includes a keyboard and drives and controls each key of the keyboard in accordance with automatic performance, and a program for realizing the control method thereof.

  A keyboard instrument that includes a keyboard and automatically drives and controls each key of the keyboard is conventionally known.

  As such a keyboard instrument, there is a so-called automatic piano in which an acoustic piano performs automatic performance. The automatic piano is configured such that each key can be driven by an actuator such as a solenoid, and by controlling the corresponding actuator based on pre-recorded performance information (piano roll or MIDI (Musical Instrument Digital Interface) data), Drive the corresponding key. As a result, the hammer linked to the key is driven and struck to achieve automatic performance.

  On the other hand, an electronic piano is equipped with an electronic sound source, and automatically performs performance by supplying musical sound parameters generated by reproducing pre-stored performance data (MIDI data) to the electronic sound source and generating sound from the electronic sound source. I am doing so. That is, the electronic piano is different from the automatic piano in that it can be automatically played without driving a key. Recently, however, electronic pianos have been commercialized in which musical sounds are generated from an electronic sound source and keys are automatically driven from the viewpoint of expressing a musical instrument.

By the way, an automatic key drive type electronic piano is usually provided with a power supply circuit that supplies electric power to a solenoid coil in order to drive a solenoid, which is an actuator. Even if this power supply circuit fails and an excessive voltage is output from the power supply circuit, some preventive measures are taken so as not to cause an accident such as damage to the device or fire. As a preventive measure, a relay is provided between the power supply circuit and the solenoid coil, and when an excessive voltage exceeding a predetermined voltage is applied to the solenoid coil, a preventive measure is taken that shuts off the relay. Yes (see, for example, Patent Document 1).
JP 2004-29549 A

  However, in the above-described conventional automatic key drive type electronic piano, although the overvoltage energization to the solenoid coil is detected as a failure related to the key drive, no other cause or state of the failure is detected. That is, even if it is limited to the failure related to the key drive, for example, there are many causes and states of failure such as a decrease in the thrust of the solenoid, a key stick at the time of pressing and releasing keys, and a contact failure of the key switch. In addition, there are many requests for detecting the cause and state of these failures and notifying the user, but the above-described conventional electronic piano cannot meet this requirement.

  The present invention has been made paying attention to this point, and is intended to realize an electronic keyboard instrument and its control method capable of detecting the cause and state of a failure in a wider range and notifying the user. The purpose is to provide a program.

In order to achieve the above object, an electronic keyboard instrument according to claim 1 includes a keyboard having a plurality of keys, an electronic sound source that generates a musical sound based on supplied pronunciation instruction data, and each of the plurality of keys. On the other hand, the detecting means for detecting that at least two pressed positions are reached from the non-key pressed state to the deepest key pressed state, and each of the plurality of keys is moved in the key pressing direction or the key releasing direction. Driving means for driving, wherein a key indicated by the supplied drive instruction data is driven in a direction indicated by the drive instruction data; and the sound generation instruction data and the drive instruction data based on performance data Generating means for generating sound, and the sound generation instruction data generated by the generating means are supplied to the sound source, and the drive instruction data generated by the generating means is supplied to the driving means. Supply means for feeding, driving instruction data for driving instruction key depression direction a predetermined key is generated by the generating means, timing when the driving instruction data said generated is supplied to the driving means by said feeding means And when the detecting means detects a shallower one of the at least two pressed positions, the time measuring means stops timing, and the time measured by the time measuring means exceeds a predetermined timeout time. And a notification means for notifying of “ damper release no reaction”.

In order to achieve the above object, an electronic keyboard instrument according to claim 2 includes a keyboard having a plurality of keys, an electronic sound source that generates a musical sound based on supplied pronunciation instruction data, and each of the plurality of keys. On the other hand, the detecting means for detecting that at least two pressed positions are reached from the non-key pressed state to the deepest key pressed state, and each of the plurality of keys is moved in the key pressing direction or the key releasing direction. Driving means for driving, wherein a key indicated by the supplied drive instruction data is driven in a direction indicated by the drive instruction data; and the sound generation instruction data and the drive instruction data based on performance data Generating means for generating sound, and the sound generation instruction data generated by the generating means are supplied to the sound source, and the drive instruction data generated by the generating means is supplied to the driving means. Supply means for feeding, driving instruction data for driving instructing predetermined key in the key release direction is generated by the generating means, timing when the driving instruction data said generated is supplied to the driving means by said feeding means And when the detection means stops detecting the deeper one of the two pressed positions, the time measuring means stops timing, and the time measured by the time measuring means has a predetermined time-out time. And a notification means for notifying “ key-off / no-reaction”.

In order to achieve the above object, the program according to claims 3 and 4 can be realized by the same technical idea as that of claims 1 and 2 , respectively .

According to the present invention, the abnormal operation content is detected based on the drive instruction data supplied to the drive means and the pressed position detected from the detection means in response to the supply of the drive instruction data, and the detected abnormality Since the notification according to the operation content is made, it is possible to detect the cause and state of the failure in a wider range and notify the user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a block diagram showing a schematic configuration of an electronic keyboard instrument according to an embodiment of the present invention.

  As shown in the figure, the electronic keyboard instrument according to the present embodiment includes a setting operator 1 including a plurality of switches, wheels, and joysticks for inputting various types of information, and detection for detecting the operation state of the setting operator 1. A circuit 2, a keyboard device 3 for inputting performance information, a CPU 4 for controlling the entire device, a control program executed by the CPU 4, a ROM 5 for storing various table data, music data, and various input information RAM 6 for temporarily storing calculation results, timer 7 for measuring interrupt time and various times in timer interrupt processing, and various information, for example, a liquid crystal display (LCD) and a light emitting diode (LED) Stores the display 8 provided, various application programs including the control program, various music data, various data, etc. An external storage device 9, a sequencer 10 for automatically reproducing music data, an external device 100 such as an external MIDI device, and a communication interface (I / F) 11 for transmitting / receiving data to / from the external device 100, and a keyboard The performance information input from the apparatus 3 and the music data automatically reproduced by the sequencer 10 are converted into audio signals, and a sound source 12 that gives effects to the audio signals, and the audio signals from the sound sources 12 are converted into sound. For example, it is configured by a sound system 13 such as a DAC (Digital-to-Analog Converter), an amplifier, and a speaker.

  The above components 2 to 12 are connected to each other via a bus 14, a timer 7 is connected to the CPU 4, an external device 100 is connected to the communication I / F 11, and a sound system 13 is connected to the sound source 12. ing. Here, the communication I / F 11 is not limited to a wired system but may be a wireless system. In addition, both types may be provided.

  Examples of the external storage device 9 include a flexible disk drive (FDD), a hard disk drive (HDD), a CD-ROM drive, and a magneto-optical disk (MO) drive. As described above, the external storage device 9 can also store a control program to be executed by the CPU 4. If the control program is not stored in the ROM 5, the control program is stored in the external storage device 9. By reading it into the RAM 6, it is possible to cause the CPU 4 to perform the same operation as when the control program is stored in the ROM 5. In this way, control programs can be easily added and upgraded.

  In the illustrated example, the external device 100 is connected to the communication I / F 11. However, the present invention is not limited to this. For example, a server computer is connected via a communication network such as a LAN (Local Area Network), the Internet, or a telephone line. You may be made to do. In this case, if the above programs and various parameters are not stored in the external storage device 9, the communication I / F 11 is used for downloading the programs and parameters from the server computer. The electronic keyboard instrument as a client transmits a command for requesting downloading of a program and parameters to the server computer via the communication I / F 11 and the communication network. Upon receiving this command, the server computer distributes the requested program or parameter to the electronic keyboard instrument via the communication network, and the electronic keyboard instrument receives the program or parameter via the communication I / F 11. Downloading is completed by accumulating in the external storage device 9.

  FIG. 2 is a block diagram showing a control configuration for controlling the driving of each key of the keyboard device 3. However, FIG. 2 also shows the CPU 4 for convenience of explanation.

  As shown in the figure, the keyboard device 3 includes a keyboard 3a having a plurality of keys (for example, 88 keys), a power supply unit 3b for supplying power to a solenoid 3b1 provided for each key, and each solenoid 3b1. A drive control unit 3c that controls the driving of the key, a scan unit 3d that detects an on / off state of a key switch (not shown) provided for each key, and the drive control unit 3c, the scan unit 3d, and the CPU 4 It is mainly configured by the bus 3e to be connected.

  The keyboard 3a is divided into four key ranges of “low range”, “middle low range”, “middle high range” and “high range” (22 keys belong to each key range). Power supply to each of the 22 solenoids 3b1 belonging to the range is controlled by one power supply unit 3b for each key range. Furthermore, one power supply unit 3b is controlled by one drive control unit 3c. Needless to say, the key area division mode and the number of divisions are not limited thereto.

  The drive control unit 3c is controlled by the CPU 4 that functions as the drive control processing unit 4a. Specifically, when it is desired to drive a certain key in the key pressing direction, the drive control processing unit 4a has one drive control unit 3c (four drive controls) in charge of driving control of the key (solenoid 3b1). Search for one of the units 3c, specify the searched drive control unit 3c, and transmit the key number (number given to each key) of the key and drive-on on the bus 3e (hereinafter referred to as “drive”). The request to turn on ”is received by the designated drive control unit 3c. Upon receiving the drive-on request, the drive control unit 3c gives a predetermined PWM (at a predetermined timing) to the power supply unit 3b so that power is supplied to the key solenoid 3b1 described in the drive-on request. pulse width modulation) to supply waveform signals. In response, a predetermined amount of power is supplied to the solenoid 3b1 from the power supply unit 3b, and the solenoid 3b1 pulls down the corresponding key in the pressing direction. On the contrary, when it is desired to drive a certain key in the key release direction, the drive control processing unit 4a searches for one drive control unit 3c responsible for drive control of the key (solenoid 3b1), When the searched drive control unit 3c is designated and the key number and the drive off of the key are transmitted on the bus 3e (hereinafter referred to as “drive off request”), the drive off request is transmitted by the designated drive control unit 3c. Received. The drive control unit 3c that has received the drive-off request sends a PWM (pulse width modulation) waveform signal to the power supply unit 3b so that power is not supplied to the key solenoid 3b1 described in the drive-on request. Stop supplying. Accordingly, no power is supplied to the solenoid 3b1 from the power supply unit 3b, so that the pulling-down operation for the solenoid 3b1 is stopped and the key is pulled up in the key release direction.

  The power supply unit 3b also has an error notification function that detects a failure (such as abnormal heat generation) of the solenoid 3b1 in hardware and notifies the drive control unit 3c of the failure. When an error notification is transmitted from the power supply unit 3b, the drive control unit 3c transfers the error notification to the drive control processing unit 4a. However, the failure detected in terms of hardware is not detected as a failure in the present embodiment.

  Each key is provided with one key switch as described above. In this embodiment, a contact time difference type three-make touch response switch is employed as the key switch. The scanning unit 3d scans the three contacts provided in each key switch every predetermined time, and detects the on / off state of each contact for each key. The detected ON / OFF state of each contact for each key is transmitted to the drive control processing unit 4a via the bus 3e. The makeup number of the key switch is not limited to the above three, but may be two, or four or more. However, one cannot be detected because the velocity at the time of key-on cannot be detected. Further, in the present embodiment, detection of the pressed / released state of each key is discretely performed using a 3-make touch response switch. However, the present invention is not limited to this. For example, an optical sensor is used. The entire process from the non-pressed state of each key to the deepest pressed state may be performed substantially continuously.

  Various structures can be conceived for the solenoid 3b1 to drive the key directly or indirectly. However, since the feature of the present invention is not in the structure of the key drive, any structure is possible. May be adopted. Therefore, a description of the key driving structure is omitted.

  The control process executed by the electronic keyboard instrument configured as described above will be described first with reference to FIG. 3 and then in detail with reference to FIGS.

  FIG. 3 is a diagram for explaining control processing executed by the electronic keyboard instrument of the present embodiment.

  The electronic keyboard instrument of the present embodiment has three types of performance modes: automatic performance & automatic key pressing mode, automatic performance & non-automatic key pressing mode, and manual performance mode. The automatic performance & automatic key pressing mode is a mode in which music data is automatically reproduced by the sequencer 10 and the keyboard 3a is automatically depressed in accordance with the automatic reproduction, and the automatic performance & non-automatic key pressing mode is performed by the sequencer 10. The music data is automatically played but not automatically depressed. The manual performance mode is a mode in which a musical sound is generated only in response to a user's key depression operation without automatically reproducing or automatically pressing music data. . The electronic keyboard instrument of the present embodiment is not limited to the case where the automatic performance & non-automatic key pressing mode is selected, but even when the automatic performance & automatic key pressing mode is selected, the user's key pressing operation is performed. It is configured so that a musical tone can be generated according to the sound.

  Further, the electronic keyboard instrument of the present embodiment always activates the failure detection function and always detects failures. Although there are actually a wide variety of failures that can be detected by the failure detection function, the feature of the present invention is the failure detection at the time of automatic key depression. The description will focus on failure detection.

  When the failure detection function is activated, application software (hereinafter abbreviated as “application”) 4b for performing failure detection processing is activated. The application 4b first selects the automatic performance & automatic key pressing mode as the performance mode, and then instructs the sequencer 10 to reproduce predetermined music data. In response to this, the sequencer 10 starts reproduction of the instructed music data, and according to the reproduction of the music data, the key-on (this key-on is the key-on output from the sequencer (SEQ) 10; ) Or key-off (this key-off is a key-off output from the sequencer (SEQ) 10, and hence is referred to as “SEQ key-off” hereinafter) to the drive control processing unit 4 a. Note that the SEQ key-on and SEQ key-off include at least pitch information.

  When the SEQ key-on is supplied, the drive control processing unit 4a supplies a drive-on request for a key instructed to be driven by the SEQ key-on to the drive control unit 3c. The sound generation request is supplied to the sound source 12. In addition, although it is normal normal performance that multiple key-ons are instructed simultaneously by one SEQ key-on, this control processing has a problem with automatic performance when the failure detection function is activated. Only one key-on is instructed by one SEQ key-on.

  Since there are four drive control units 3c as described above, one of them receives the drive-on request output from the drive control processing unit 4a. From the drive control processing unit 4a, a drive-on request with the address of the drive control unit 3c in charge of driving control of the key is supplied on the bus 3e, so that the drive control unit 3c receives the data on the bus 3e. The data is always checked, and when data addressed to itself is supplied on the bus 3e, the data is fetched. As a result, the drive-on request is supplied to one drive control unit 3c to be supplied. Note that such a data transmission / reception method on the bus 3e is common not only between the drive control processing unit 4a and the drive control unit 3c but also to all devices connected to the bus 3e.

  The drive control unit 3c that has received the drive-on request supplies a PWM waveform signal to the circuit corresponding to the key of the power supply unit 3b connected to the drive control unit 3c. In response to this, power is supplied from the power supply unit 3b to the solenoid corresponding to the key, and the key is pressed. When the key is pressed, the three contacts of the key switch provided on the key are sequentially turned on with a time difference. These three contacts are referred to as a first contact, a second contact, and a third contact in the order in which they are turned on. The scanning unit 3d scans the three contacts of the key switch, detects the on / off state of each contact, and supplies the on / off state to the drive control processing unit 4a for each contact. The drive control processing unit 4a receives the ON / OFF state for each contact supplied from the scanning unit 3d, and stores the contact state storage area secured at a predetermined position in the RAM 6 to store the ON / OFF state for each contact. (Not shown). Hereinafter, for convenience of explanation, the first contact is in the on state is referred to as “damper release”, and the second contact or the third contact is in the on state is referred to as “keyboard key on”.

  When receiving the sound generation request, the sound source 12 generates a musical sound signal (audio signal) corresponding to the sound generation request and outputs it to the sound system 13. As a result, the sound requested by the SEQ key-on is generated from the sound system 13.

  On the other hand, when the SEQ key-off is supplied, the drive control processing unit 4a supplies the drive control unit 3c with a key drive-off request instructed to stop driving by the SEQ key-off, and the mute is instructed by the SEQ key-off. A request to mute the musical sound is supplied to the sound source 12.

  The drive control unit 3c that has received the drive-off request gradually stops the supply of the PWM waveform signal supplied to the circuit corresponding to the key of the power supply unit 3b connected to the drive control unit 3c. In response to this, the supply of power to the solenoid corresponding to the key is gradually stopped from the power supply unit 3b, and the key is pulled back in the key release direction. When the key is pulled back in the key release direction, the three contacts of the switch provided on the key have a time difference and are in the reverse order of turn-on, that is, the third contact, the second contact, and the second contact. It is turned off in the order of one contact. The scanning unit 3d scans the three contacts of the key switch, detects the on / off state of each contact, and supplies the on / off state to the drive control processing unit 4a for each contact. The drive control processing unit 4a receives the ON / OFF state for each contact supplied from the scanning unit 3d and stores it in the contact state storage area. Hereinafter, for convenience of explanation, the first contact is in the off state is referred to as “damper hold”, and the second contact or the third contact is in the off state is referred to as “keyboard key off”.

  When the sound source 12 receives the mute request, the sound source 12 generates a musical sound signal corresponding to the mute request and outputs it to the sound system 13. As a result, the sound that is being generated as requested by the SEQ key-on is muted from the sound system 13.

  The drive control processing unit 4a uses the timer 7 to measure the time from the output of the drive-on request to the reception of the damper release corresponding to the drive-on request, and the time measured is a predetermined timeout period ( Hereinafter, it is determined that some failure has occurred, and an error notification is sent to the application 4b. Similarly, the drive control processing unit 4a uses the timer 7 to count the time from when the drive-off request is output until the keyboard key-off corresponding to the drive-off request is received. When a time-out time (hereinafter referred to as “second time-out time”) is exceeded, it is determined that some failure has occurred, and an error notification is sent to the application 4b.

  The drive control processing unit 4a further outputs a drive-on request and then obtains a drive-off request according to the on / off state of each contact of the key switch corresponding to the drive-on request obtained from the scan unit 3d. Is output, and it is determined whether or not any failure has occurred according to the on / off state of each contact of the key switch corresponding to the drive-off request obtained from the scanning unit 3d. Is determined, error notification is sent to the application 4b.

  When the automatic performance & non-automatic key pressing mode is selected as the performance mode, the sequencer 10 reproduces the music data and generates a sound generation request / mute request instead of generating a SEQ key on / SEQ key off. This is output directly to the sound source 12. Of course, the present invention is not limited to this. Even when the automatic performance & non-automatic key pressing mode is selected, the sequencer 10 generates SEQ key-on / SEQ key-off and outputs it to the drive control processing unit 4a. The sound generation request / mute request may be supplied to the sound source 12 via

  Next, this control process will be described in detail.

  FIG. 4 is a flowchart showing the procedure of the key state monitoring process executed by the electronic keyboard instrument of the present embodiment, particularly the CPU 4. The key state monitoring process is included in the application 4b in the present embodiment. Make it not exist. The key state monitoring process is a part of the failure detection process that is executed when the failure detection function is activated.

This key status monitoring process is mainly
(1) Initialization process (step S1)
(2) Status scan process (step S2)
(3) Control process determination process to be transferred (step S3)
(4) Control process during drive on (step S4)
(5) Holding control process (step S5)
(6) Control processing during drive off (step S6)
(7) Default control process (step S7)
I do. Note that the processes (2) to (7) described above (however, only one of the processes (4) to (7)) is performed for every key.

  Hereinafter, the key state monitoring process will be described in detail for each of the processes (1) to (7). Before that, the registers and flags used in the processes (2) to (7) will be described.

  i: An index indicating any key of the keyboard 3a. The total number of keys of the keyboard 3a is 88 keys as described above, and each key is given an integer value from 1 to 88 in order from the leftmost key toward the keyboard 3a. Any integer value from 1 to 88 can be taken.

  WKON (i): A flag that is set (“1”) when the i-th key is driving on and is reset (“0”) when the driving is not on. Here, “driving on” means from the output of the driving on request to the occurrence of an on event of the third contact of the key switch. The on event is an event generated by the scanning unit 3d when the contact is switched from the off state to the on state.

  KEEP (i): A flag that is set when the solenoid corresponding to the i-th key is holding the driving force and is reset when the driving force is not being held. Here, “holding the driving force” refers to the period from when the ON event of the third contact of the key switch occurs until the drive OFF request is output.

  WKOF (i): a flag that is set when the i-th key is being driven off and reset when the driving is not being turned off. Here, “being driven off” refers to a period from when a drive-off request is output until an off event of the first contact of the key switch occurs. The off event is an event generated by the scanning unit 3d when the contact is switched from the on state to the off state.

  DFT (i): A flag that is set when in the default state and reset when not in the default state. Here, the “default state” refers to a state in which neither a drive-on request nor a drive-off request is output and an on event or an off event of any contact of the key switch does not occur.

  MVK (i): A register for storing a key number (KN) assigned to the i-th key to be driven. In this embodiment, since the index i and the key number are the same, this key state monitoring process can be performed without providing this register, but in order to simplify this process, this register is Provided.

  FON (i): a flag indicating the ON state of the first contact of the key switch of the i-th key, and is set when an ON event of the first contact of the key switch occurs after the drive ON request is output And reset when an on event of the third contact of the key switch occurs.

  SOF (i): a flag indicating the off state of the second contact of the key switch of the i-th key, and is set when an off event of the second contact of the key switch occurs after the drive-off request is output And reset when an off event of the first contact of the key switch occurs.

  TOON (i): a register in which a count value corresponding to the first timeout time T0 is set when a drive-on request for the i-th key is output, and the set count value is The value is subtracted every predetermined time until an ON event of the third contact of the key switch occurs.

  TOOF (i): a register in which a count value corresponding to the second timeout time T1 is set when a drive-off request for the i-th key is output, and the set count value is It is subtracted every predetermined time until an off event of the first contact of the key switch occurs.

  ER (i): A flag that is set when any failure is detected in any device corresponding to the i-th key, and reset at other times.

  US (i): A flag that is set when an unexpected operation is detected for the i-th key and reset at other times.

  Returning to FIG. 4, when the process shifts to the real key state monitoring process, the drive control processing unit 4a performs the initialization process (1). In this (1) initialization process, the drive control processing unit 4a performs initial settings such as clearing the RAM 6 and setting various parameter values to default values.

  Next, the drive control processing unit 4a advances the process to the state scan process (2). In this (2) state scanning process, the scanning unit 3d is requested to scan the on / off state of each contact point of the key switch indicated by the current index i, and is output from the scanning unit 3d accordingly. The ON / OFF state of each contact is stored in the contact state storage area.

  Next, the drive control processing unit 4a advances the process to the determination process of the control process to be transferred in (3). In the determination process of the control process to be transferred (3), first, the drive control processing unit 4a first determines the four flags WKON (i), KEEP (i), WKOF (i) and DFT ( The flag in the set state (“1”) is detected in i). Only one of the four flags WKON (i), KEEP (i), WKOF (i), and DFT (i) is in a set state, and the remaining three are in a reset state. That is, the set / reset state of each flag is controlled so that a plurality of flags are not set at the same time. The four flags WKON (i), KEEP (i), WKOF (i) and DFT (i) are set / reset during the processes (4) to (7). Next, the drive control processing unit 4a advances the processing to the control processing indicated by the detected set state flag. Specifically, if the flag WKON (i) is in the set state, the process proceeds to the drive-on control process in (4), and if the flag KEEP (i) is in the set state, the process is performed in the above (5). If the flag WKOF (i) is in the set state, the process proceeds to the drive-off control process in (6). If the flag DFT (i) is in the set state, the process is The process proceeds to the default control process (7).

  When the processing of (2) to (7) is completed, the index i is advanced by “1”, and the index i is increased to (2) to (7) until the index i exceeds the total number of keys of the keyboard 3a. When the index i exceeds the total number of keys of the keyboard 3a, the index i is returned to the initial value ("1"), and then the processes (2) to (7) are performed on the index i. I do.

  For each key, that is, for each index i, the time from the process (2) through the process (3) to the end of any one of the processes (4) to (7) is constant (for example, , 0.1 msec), the time adjustment is performed in the (2) state scanning process. That is, the value of the timer 7 is acquired before starting the step S2, and the value of the timer 7 is acquired again when the process returns from step S10 to step S2. Since the difference between the acquired values of the timer 7 is usually shorter than 0.1 msec, the drive control processing unit 4a waits until the difference becomes 0.1 msec, and the drive control processing unit 4a performs step S2, that is, (2) the state scanning process. Start. In this way, the time spent for one loop of the key status monitoring process is made constant for each key because the decrement of the registers TOON (i) and TOOF (i) is performed as described later. This is because it is performed in (4) control processing during drive on and (6) control processing during drive off. Of course, if the registers TOON (i) and TOOF (i) are decremented in the timer interrupt process that is started in response to the timer interrupt generated every 0.1 msec, (2) status scan No time adjustment is required for processing. Further, the time adjustment is not necessarily performed in (2) the state scanning process, and even if it is performed in the process of determining the control process to be shifted to (3), the time adjustment is performed at an appropriate position immediately before or immediately after step S8. You just have to do it.

  FIG. 5 is a flowchart showing a detailed procedure of the control process during drive on (4).

This (4) control process during driving on is mainly performed.
(11) Normal processing (12) Damper release / no-reaction detection and notification processing (see FIG. 9A)
(13) Key-on / no-reaction detection and notification processing (see FIG. 9B)
(14) Solenoid drive stop detection and notification processing (see FIG. 9C)
I do.

  In the normal processing of (11), as indicated by a broken line from drive ON (= drive on request) to Key ON (= key on) in FIG. This is processing when the on-state is sequentially switched from the first contact point to the third contact point until the time-out time T0 elapses. In this (11) normal process, the drive control processing unit 4a only decrements the register TOON (i) until the first contact ON event is detected (step S11 → S12 → S24 → S17 → return). When the ON event of the first contact is detected, the flag FON (i) is set (step S11 → S23), and then the register TOON (i) is decremented (step S24 → S17 → return). Next, the drive control processing unit 4a only decrements the register TOON (i) until there is an ON event of the third contact (steps S11 → S12 → S13 → S15 → S16 → S17 → return), and the third contact When an on event is detected, flag KEEP (i) is set, WKON (i) and flag FON (i) are reset, and register TOON (i) is reset (steps S11 → S12 → S13 → S14).

  In the damper release / no-reaction detection and notification process of (12), as shown in FIG. 9A, after the drive-on request is output, the on-event (= damper release) of the first contact is detected. In other words, this is processing when the first timeout time T0 has elapsed. In this (12) damper release / no-reaction detection and notification process, the drive control processing unit 4a only decrements the register TOON (i) until an ON event of the first contact is detected (steps S11 → S12). → S24 → S17 → Return), even if the value of the register TOON (i) becomes negative, the first contact ON event is not detected. That is, even if the first timeout time T0 has elapsed, the first Since the contact ON event is not detected, a drive OFF request is output to the drive control unit 3c so as to stop the drive of the solenoid corresponding to the key number (KN) stored in the register MVK (i) (step S25). Then, “damper release no reaction” is notified to the application 4b (step S26). Further, the flags ER (i) and DFT (i) are set, and the flag WKON (i) is reset (step S20). Possible causes of the failure at this time include “the solenoid 3b1 does not operate at all” or “the contact failure of the first contact”.

  As shown in FIG. 9B, the key-on / no-reaction detection and notification process of (13) is performed with the third contact although the on-event of the first contact is detected after the drive-on request is output. This is a process when the first time-out time T0 has elapsed without detecting an on event (= key on). In this (13) key-on / no-reaction detection and notification process, the solenoid 3b1 only decrements the register TOON (i) until an on-event of the first contact is detected (steps S11 → S12 → S24 → S17). When the ON event of the first contact is detected, the flag FON (i) is set (step S11 → S23), and then the register TOON (i) is decremented (step S24 → S17 → return). Even if the value of the register TOON (i) becomes a negative value, the third contact ON event is not detected. That is, even if the first timeout time T0 has elapsed, the third contact ON event is not detected. Therefore, the drive control processing unit 4a outputs a drive off request to the drive control unit 3c so as to stop the drive of the solenoid corresponding to the key number (KN) stored in the register MVK (i) (step S18). The application 4b is notified of “key-on no-reaction” (step S19). Further, the process of step S20 is performed. Possible causes of the failure at this time include “cannot press the key until the solenoid 3b1 thrust decreases and the key is turned on” or “the second contact or the third contact is defective”.

  As shown in FIG. 9C, the solenoid drive stop detection and notification process (14) is performed after the first contact ON event is detected after the drive ON request is output. This is processing when an off event (= damper hold) of the first contact is detected without detecting an on event. In this (14) solenoid drive stop detection and notification process, the drive control processing unit 4a only decrements the register TOON (i) until an ON event of the first contact is detected (steps S11 → S12 → S24). → S17 → Return) When the ON event of the first contact is detected, the flag FON (i) is set (Step S11 → S23), and then the register TOON (i) is decremented (Step S24 → S17 → Return) ). Then, since the off event of the first contact is detected, the drive control processing unit 4a causes the drive control unit to stop driving the solenoid corresponding to the key number (KN) stored in the register MVK (i). A drive-off request is output to 3c (step S21), and the application 4b is notified of “solenoid drive stop” (step S22). Further, the process of step S20 is performed. Possible causes of the failure at this time include “the drive of the solenoid 3b1 has been suddenly interrupted” or “the user has forcibly returned the key to the key release direction”.

  FIG. 6 is a flowchart showing a detailed procedure of the holding control process (5).

This (5) holding control process mainly includes
(21) Normal process (22) Solenoid drive stop detection and notification process (see FIG. 9D)
I do.

  In the normal process of (21), the third contact is kept on during that time as shown by the broken line from KeyON (= key on) to drive OFF (= drive-off request) in FIG. 9 (a). Process. In this (21) normal process, the drive control processing unit 4a monitors the occurrence of the off event of the second contact until the SEQ key-off is output (step S31 → S34 → return). However, since the OFF event of the second contact is not detected and SEQ key-off is output, the drive control processing unit 4a stops driving the solenoid corresponding to the key number (KN) stored in the register MVK (i). So as to output a drive-off request to the drive control unit 3c (step S31 → S32), set the flag WKOF (i), reset the flag KEEP (i), and set the second timeout in the register TOOF (i). A count value corresponding to the time T1 is set (step S33).

  In the solenoid drive stop detection and notification process (22), the third contact is in the ON state from KeyON (= key on) to drive OFF (= drive-off request) as shown in FIG. 9 (d). This is a process when an off event of the second contact is detected during the period that must be continued. In this (22) solenoid drive stop detection and notification process, the drive control processing unit 4a monitors the occurrence of the off event of the second contact until the SEQ key-off is output (step S31 → S34 → return). However, since the OFF event of the second contact is detected before the SEQ key-off is output, the drive control processing unit 4a drives the solenoid corresponding to the key number (KN) stored in the register MVK (i). A drive-off request is output to the drive controller 3c so as to stop (step S35), the application 4b is notified of “solenoid drive stop” (step S36), and the flags ER (i) and DFT (i) are set. The flag KEEP (i) is reset (step S37). Possible causes of the failure at this time include “the drive of the solenoid 3b1 has been suddenly interrupted” or “the user has forcibly returned the key to the key release direction”.

  FIG. 7 is a flowchart showing a detailed procedure of the control process during the drive-off state (6).

This (6) control process during driving off is mainly performed.
(31) Normal processing (32) Key-off / no-reaction detection and notification processing (see FIG. 9E)
(33) Unexpected detection and notification processing (see FIG. 9F)
I do.

  The normal processing of (31) described above is performed after the drive-off request is output, as indicated by the broken line from drive-off (= drive-off request) to damper hold (= key key-off) in FIG. This is a process for sequentially switching from the third contact point to the first contact point until the time-out time T1 of 2 elapses. In this (31) normal process, the drive control processing unit 4a only decrements the register TOOF (i) until the second contact OFF event is detected (step S41 → S42 → S46 → S47 → return). When the off event of the second contact is detected, the flag SOF (i) is set (step S41 → S52), and then the register TOON (i) is decremented (step S46 → S47 → return). Next, the drive control processing unit 4a only decrements the register TOOF (i) until the first contact OFF event is detected (step S41 → S42 → S43 → S45 → S46 → S47 → return), and the first When the contact off event is detected, the flag DFT (i) is set, the flag WKOF (i) is reset, and the register TOOF (i) is reset (steps S41 → S42 → S43 → S44).

  As shown in FIG. 9 (e), the detection and notification processing of the key-off / no-reaction (32) described above is performed after the drive-off request is output and the second contact off event is not detected. This is processing when the timeout time T1 has elapsed. In this (32) key-off / no-reaction detection and notification process, the drive control processing unit 4a only decrements the register TOOF (i) until an off-event of the second contact is detected (steps S41 → S42 → S46 → S47 → Return). However, even if the value of the register TOOF (i) becomes a negative value, the off event of the second contact is not detected. That is, the off event of the second contact is not detected even when the second timeout time T1 elapses. The drive control processing unit 4a notifies the application 4b of “key-off / no-reaction” (steps S41 → S42 → S43 → S45 → S46 → S48). Further, the flags ER (i) and DFT (i) are set, and the flag WKOF (i) is reset (step S49). Possible causes of failure at this time include “the key is sticking in the middle of key release”, “the user is pressing the key in the middle of key release” or “contact failure of the first contact” Can do.

  In the unexpected detection and notification process of (33), as shown in FIG. 9F, the first contact OFF is detected although the OFF event of the second contact is detected after the drive OFF request is output. This is processing when an on event of the third contact is detected without detecting an event. In this (33) unexpected detection and notification process, the drive control processing unit 4a only decrements the register TOOF (i) until an off event of the second contact is detected (steps S41 → S42 → S46 → When the second contact off event is detected (S47 → Return), the flag SOF (i) is set (Step S41 → S52), and then the register TOOF (i) is decremented (Step S46 → S47 → Return). . Then, since the key-on event of the third contact is detected, the drive control processing unit 4a notifies the application 4b of “unexpected” (steps S41 → S42 → S43 → S45 → S50) and sets the flag US (i). Set (step S51). Further, the process of step S49 is performed. As a possible cause of the failure at this time, “the user pressed the key during the key release” can be cited.

  FIG. 8 is a flowchart showing a detailed procedure of the default control process (7).

This (7) default control processing is mainly
(41) Drive-on request processing (steps S64 to S66)
(42) Sound generation request processing (steps S68 and S69)
I do.

  In the drive-on request process of (41), when the SEQ key-on is output, the drive control processing unit 4a searches the drive control unit 3c for the key requested to be turned on by the SEQ key-on (step S64). A key number (KN) stored in the register MVK (i) and a drive-on request are transmitted to the searched drive control unit 3c (step S65), the flag WKON (i) is set, and the flag DFT (i) is set. The count value corresponding to the first timeout time T0 is set in the register TOON (i) (step S66). When the flag ER (i) is set, the drive control processing unit 4a does not perform the (41) drive-on request process (step S62 → return).

  In the sound generation request process of (42), when any key is manually turned on, the drive control processing unit 4a transmits touch data and a key number (KN) to an empty channel of the sound source to request a sound generation ( In step S68, the key drive related data and flag relating to KN are cleared (step S69). Even when the flag US (i) is set, the drive control processing unit 4a performs the (42) sound generation request process (steps S61 → S68).

  The application 4b notifies the drive control processing unit 4a of an error notification of “damper release no reaction”, “key on no reaction”, “solenoid drive stop”, “key off no reaction”, or “unexpected”. When received, the content of the received failure notification is displayed on the LCD of the display 8 together with the key number of the key where the failure is detected. At this time, it is preferable to display possible causes of failure. For example, when there is not enough room on the LCD display screen, the display may be omitted or the screen may be switched to another screen. It may be. The error notification is not limited to display on the LCD, and when a plurality of LEDs are provided, the LED of a position or color corresponding to the content of the failure can be turned on, or the sound source 12 can perform voice synthesis. In such a case, the content of the failure, the key where the failure is detected, the cause of the failure, and the like may be appropriately combined and notified by voice. In short, any notification mode that can notify the user of the contents of the failure may be adopted.

  Thus, in the present embodiment, the cause and state of the failure can be detected and notified to the user in a wider range.

  In the present embodiment, error notification is performed immediately when a predetermined phenomenon occurs once, but is not limited to this, and may be performed when a predetermined number of times occurs. FIG. 10 shows a procedure in which error notification is performed when the phenomenon shown in FIG. 9D occurs N times in the detection and notification processing of (22) solenoid drive stop in the holding control processing. It is a flowchart. Of course, error notification in other control processes may also be performed when a predetermined phenomenon occurs a predetermined number of times.

  In the present embodiment, even if there is a hardware error notification from the power supply unit 3b, no consideration is given to the hardware error notification. This form of error notification may be used in combination with this form of error notification. With this configuration, the quality of error notification can be further improved.

  A program in which a storage medium storing software program codes for realizing the functions of the above-described embodiments is supplied to a system or apparatus, and a computer (or CPU or MPU) of the system or apparatus is stored in the storage medium. It goes without saying that the object of the present invention can also be achieved by reading and executing the code.

  In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the program code and the storage medium storing the program code constitute the present invention.

  As a storage medium for supplying the program code, for example, a flexible disk, hard disk, magneto-optical disk, CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW, magnetic A tape, a non-volatile memory card, a ROM, or the like can be used. Further, the program code may be supplied from a server computer via a communication network.

  Further, by executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also the OS running on the computer based on the instruction of the program code performs the actual processing. It goes without saying that a case where the functions of the above-described embodiment are realized by performing part or all of the above and the processing thereof is included.

  Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows schematic structure of the electronic keyboard musical instrument which concerns on one embodiment of this invention. It is a block diagram which shows the control structure which controls the drive of each key of the keyboard apparatus in FIG. It is a figure for demonstrating the control processing which the electronic keyboard instrument of FIG. 1 performs. It is a flowchart which shows the procedure of the key state monitoring process which the electronic keyboard instrument of FIG. 1, especially CPU performs. 5 is a flowchart showing a detailed procedure of a drive-on control process in FIG. 4. It is a flowchart which shows the detailed procedure of the control process in holding | maintenance in FIG. 5 is a flowchart showing a detailed procedure of a control process during drive off in FIG. 4. It is a flowchart which shows the detailed procedure of the default control process in FIG. It is a figure which shows an example of the phenomenon detected as a failure. It is a flowchart which shows the detailed procedure of other control processing during holding.

Explanation of symbols

3a ... Keyboard, 3b ... Power supply unit (drive unit), 3c ... Drive control unit (drive unit), 3d ... Scan unit (detection unit), 4 ... CPU (drive unit, generation unit, supply unit, notification unit), 8 ... Display (notification means), 12 ... Sound source (electronic sound source)

Claims (4)

A keyboard with multiple keys,
An electronic sound source that generates musical sounds based on the supplied pronunciation instruction data;
Detecting means for detecting that at least two pressed positions have been reached between the non-pressed state and the deepest pressed state for each of the plurality of keys;
Driving means for driving each of the plurality of keys in a key pressing direction or a key releasing direction, and driving a key instructed by the supplied driving instruction data in a direction instructed by the driving instruction data; ,
Generating means for generating the sound generation instruction data and the drive instruction data based on performance data;
Supply means for supplying the sound generation instruction data generated by the generation means to the sound source and supplying the drive instruction data generated by the generation means to the drive means;
Drive instruction data for instructing driving of a predetermined key in the key pressing direction is generated by the generation means, and when the generated drive instruction data is supplied to the drive means by the supply means, timing is started, and the detection timing means for stopping the time measurement when the pressing position of the shallower ones depressed position of said at least two positions are detected by means,
A notification means for notifying a “ damper release no reaction” when the time measured by the time measuring means exceeds a predetermined time-out time ;
It shall be the feature electronic keyboard musical instrument in that it has. A keyboard with multiple keys,
An electronic sound source that generates musical sounds based on the supplied pronunciation instruction data;
Detecting means for detecting that at least two pressed positions have been reached between the non-pressed state and the deepest pressed state for each of the plurality of keys;
Driving means for driving each of the plurality of keys in a key pressing direction or a key releasing direction, and driving a key instructed by the supplied driving instruction data in a direction instructed by the driving instruction data; ,
Generating means for generating the sound generation instruction data and the drive instruction data based on performance data;
Supply means for supplying the sound generation instruction data generated by the generation means to the sound source and supplying the drive instruction data generated by the generation means to the drive means;
Driving instruction data for instructing driving of a predetermined key in the key release direction is generated by the generating means, and when the generated driving instruction data is supplied to the driving means by the supplying means, timing is started, and the detection timing means for stopping the time measurement when the pressing position of the deeper ones depressed position of said at least two locations is no longer detected by the means,
A notification means for notifying " key-off / no-reaction" when the time measured by the time measuring means exceeds a predetermined time-out period ;
It shall be the feature electronic keyboard musical instrument in that it has. A keyboard with a plurality of keys, an electronic sound source that generates musical sounds based on the supplied pronunciation instruction data, and between each of the plurality of keys, from a non-pressed state to a deepest pressed state, Detection means for detecting that at least two pressing positions have been reached, and driving means for driving each of the plurality of keys in the key pressing direction or the key releasing direction, which are instructed by the supplied drive instruction data A program for causing a computer to execute a control method for controlling an electronic keyboard instrument comprising a key driven in a direction indicated by the drive instruction data,
The control method is:
Generating step for generating the sound generation instruction data and the drive instruction data based on performance data;
Supplying the sound generation instruction data generated by the generation step to the sound source and supplying the drive instruction data generated by the generation step to the driving means;
Driving instruction data for instructing driving of a predetermined key in the key pressing direction is generated by the generating step, and when the generated driving instruction data is supplied to the driving means by the supplying step, timing is started, and the detection A timing step for stopping timing when a shallower one of the at least two pressed positions is detected by the means;
And a notifying step of notifying of “damper release / no reaction” when the time measured by the time counting step exceeds a predetermined time-out time .   A keyboard with a plurality of keys, an electronic sound source that generates musical sounds based on the supplied pronunciation instruction data, and between each of the plurality of keys, from a non-pressed state to a deepest pressed state, Detection means for detecting that at least two pressing positions have been reached, and driving means for driving each of the plurality of keys in the key pressing direction or the key releasing direction, which are instructed by the supplied drive instruction data A program for causing a computer to execute a control method for controlling an electronic keyboard instrument comprising a key driven in a direction indicated by the drive instruction data,
  The control method is:
  Generating step for generating the sound generation instruction data and the drive instruction data based on performance data;
  Supply step of supplying the sound generation instruction data generated by the generation step to the sound source and supplying the drive instruction data generated by the generation step to the driving means
When,
  Driving instruction data for instructing driving of a predetermined key in the key release direction is generated by the generating step, and when the generated driving instruction data is supplied to the driving means by the supplying step, timing is started, and the detection A timing step for stopping timing when a deeper one of the at least two pressed positions is no longer detected by the means;
  A notification step of notifying “key-off / no-reaction” when the time measured by the time counting step exceeds a predetermined time-out period;
The program characterized by having.

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