JP6690334B2 - How to unlock - Google Patents

Description

  The present invention relates to a lock releasing method capable of easily recognizing that a value indicated by an operator deviates from a set value when unlocking a panel lock.

  A conventional power amplifier is provided with a plurality of operators including an attenuator operator on its panel, and when the power amplifier is installed, the settings suitable for the installation location and operating environment are set. After the setting is made, if a person other than the person in charge operates the operation element of the panel, the preferable setting may be changed and trouble may occur. Therefore, the front surface of the panel has been covered with a cover so that only the person in charge can operate the operator. In addition, in digital power amplifiers, there is a power amplifier having a panel lock function that disables panel operation so as not to accidentally operate an operator (see Non-Patent Document 1).

Yamaha Corporation POWER AMPLIFIER TX6n / TX5n / TX4n Reference Manual [online], [Search on February 21, 2016], Internet <http://download.yamaha.com/api/asset/file?language=ja&site=countrysite -master.prod.exp.yamaha.com & asset_id = 48589>

The panel lock of the power amplifier in Non-Patent Document 1 is temporarily unlocked by performing a special operation of simultaneously pressing the [HOME] button and the [EXIT] button for 3 seconds or more when the panel lock is in the locked state. be able to. The panel lock can be invalidated by setting the Panel to Normal with the panel lock released. Further, when the panel lock is in the locked state, even if the operator is operated, the parameter value assigned to the operator is not changed, and the rotary encoder is used as the operator for adjusting the volume level. Therefore, even if the rotary encoder is operated in the locked state, the volume level is not changed when the locked state is released.
However, there is a case where a volume whose operation position corresponds to the volume level is used as an operator for adjusting the volume level, and if the volume is operated while in the locked state, the volume operation position will be changed when the locked state is released. The volume level will be changed accordingly. In this case, when unlocking the panel lock, you want to reflect the changed value of the control as it is, or to return the value of the control to the setting value and enable the operation, depending on the usage status. There were cases.

  Therefore, it is an object of the present invention to provide a lock releasing method capable of easily recognizing that a value indicated by an operator deviates from a set value.

In order to achieve the above-mentioned object, the unlocking method of the audio device of the present invention is a normal state in which the value indicated by the operator is reflected in the set value, and a lock state in which the value indicated by the operator is not reflected in the set value. When releasing the locked state, if the set value and the value indicated by the operator at that time are different, a display screen indicating that is displayed, and the set value and the time at that time are displayed. The main feature is that the display screen is not displayed when the values indicated by the operators are the same.
The present invention can be carried out in any mode such as a system and an apparatus in addition to the above-described method.

  In the unlocking method of the present invention, when releasing the locked state, if the set value and the value indicated by the operator are different, a display screen indicating that is displayed, and the set value and the operator are If the indicated values are equal, the display screen will not be displayed. Thereby, it is possible to visually recognize that the value indicated by the operator deviates from the set value. Further, by operating the manipulator so that the value indicated by the manipulator matches the set value, the display disappears, which facilitates the operation. Even if you want to suddenly change the set value in the locked state, the locked state can be released when the set value and the value indicated by the operator are equal, so you can quickly release the locked state. Then, the set value can be changed.

It is a functional block diagram which shows the structure of the power amplifier which can implement the unlocking method of this invention. It is a figure which shows the structure of the operation panel of the power amplifier which can implement the unlocking method of this invention. It is a figure which shows the procedure which sets a panel lock in a lock state in the power amplifier which can implement the lock release method of this invention. It is a figure which shows the procedure which unlocks a panel lock in the power amplifier which can implement the unlocking method of this invention. It is a flowchart of the panel lock process performed in the power amplifier which can implement the lock release method of this invention. It is a flow chart of other panel lock processing performed in a power amplifier which can implement a lock release method of the present invention. It is a flowchart of further another panel lock process performed in the power amplifier which can implement the lock release method of this invention.

Hereinafter, a mode for carrying out the present invention will be specifically described with reference to the drawings.
First, FIG. 1 shows a functional block diagram showing a configuration of a power amplifier 1 capable of implementing the unlocking method of the present invention.
The power amplifier 1 shown in FIG. 1 has two channels, Ach and Bch, and has a CPU (Central Processing Unit) 10, a flash memory 11, a RAM (Random Access Memory) 12, other I / O 13, an operator 14, and a display 15. And a waveform input section 20, a digital signal processing section 21, a D / A / A / D section 22, and an analog power amplification section 23, which are connected by a bus 24. The digital signal processing unit 21 described above can be configured by a DSP (Digital Signal Processor).

  Of these, the CPU 10 is a control means for integrally controlling the operation of the power amplifier 1. By executing the control program stored in the flash memory 11, the CPU 10 edits the parameters according to the operation of the operator 14 and displays in the display 15. It performs processing such as display control and panel lock lock / unlock control. The flash memory 11 is a rewritable non-volatile storage unit that stores a control program executed by the CPU 10, configuration data, SP presets corresponding to speakers, and the like. The config data defines the path of the sound signal from the input section to the output section and the signal processing on the path. The RAM 12 is a volatile storage unit for the CPU 10 to write and read various data, and also as a work memory of the CPU 10 and a current memory for storing a current memory value which is a setting value currently set in the digital signal processing unit 21. used. The other I / O 13 is an interface for connecting various external devices for communication. As a standard used for communication in the I / O 13, any standard such as Ethernet (trademark) and USB (Universal Serial Bus) can be adopted, and wired or wireless may be used. The display unit 15 is a display unit that displays various kinds of information under the control of the CPU 10, and can be composed of, for example, a liquid crystal panel (LCD) or a light emitting diode (LED).

  Explaining the configuration of the path from the input section of the sound signal to the output section, the waveform input section 20 can receive analog Ach and Bch sound signals from the external source 2 and convert them into digital sound signals. And supplies it to the digital signal processing unit 21. The digital signal processing unit 21 performs signal processing such as crossover processing, delay processing, equalizer processing, limiter processing, and dynamics processing on each of the digital sound signals, and outputs the processed sound signals to D / A / A / Output to D section 22. The D / A / A / D unit 22 converts each digital sound signal into an analog sound signal and supplies the analog sound signal to the analog power amplification unit 23. The analog power amplifier 23 power-amplifies each analog sound signal, and outputs the amplified Ach and Bch sound signals to the external speaker 3 from the speaker terminal.

  The configuration of the operation panel of the power amplifier 1 is shown in FIG. As shown in FIG. 2, on the operation panel, a rectangular display 15 is provided on the upper side of the center and a power switch 31 is provided on the lower side of the left side. On the right side of the power switch 31, an Ach level knob 30a for controlling the output level of the Ach sound signal and an Ach selection button 30b marked with "A" are vertically arranged, and on the right side thereof, a menu key (Menu) 30c and a return key. The keys 30d are arranged side by side. Further, a rotary encoder (hereinafter referred to as “encoder”) 30e with a push switch is arranged on the right side thereof, and this push switch has a function as an enter key. On the right side of the encoder 30e, a Bch level knob 30f for controlling the output level of the Bch sound signal and a Bch selection button 30g labeled "B" are vertically arranged. Further, a power lamp (POWER) and a warning lamp (ALERT) are arranged above the power switch 31, and Ach and Bch protect lamps (PL A, PL B) are arranged above the Ach and Bch selection buttons 30b and 30g. It is arranged. The power amplifier 1 is provided with a protection circuit, and when the protection circuit detects an abnormality in the output stage of each channel, the CPU 10 turns on the corresponding lamps PL A and PL B. When the Ach level knob 30a or the Bch level knob 30f is operated, the output level of the Ach or Bch is controlled by the CPU 10 according to the operation amount. A home screen, which is a basic screen, is displayed on the display unit 15 shown in the figure, and the current output levels of Ach and Bch (Ach is -15 dB and Bch is -19 dB) are mainly displayed on the home screen.

Next, FIGS. 3A to 3F show a procedure for setting the panel lock for locking the panel operation of the power amplifier 1 to the locked state / unlocked state. In each figure, a part of the panel of the power amplifier 1 is shown.
To set the locked / unlocked state of the panel lock, first, the user presses the menu key (Menu) 30c while the home screen is displayed on the display 15 as shown in FIG. As a result, the CPU 10 displays the menu screen shown in FIG. On this menu screen, any one of a plurality of prepared menus can be selected. Here, the user selects [UTILITY] as shown in the figure. In this case, the selected [UTILITY] is displayed with the white outline reversed. Then, the user pushes the encoder 30e. As a result, the selection of [UTILITY] is confirmed, and the CPU 10 displays the UTILITY screen shown in FIG.

On this UTILITY screen, you can select one of the prepared utilities, and if the user selects [PANEL LOCK] as shown in the figure, [PANEL LOCK] will be highlighted in white. . Next, when the user pushes the encoder 30e, the selection of [PANEL LOCK] is confirmed. As a result, the CPU 10 displays the PANEL LOCK screen shown in FIG. On this PANEL LOCK screen, the panel lock status and PIN CODE are displayed. In this case, since the panel lock is unlocked, [PANEL LOCK OFF] is displayed as shown in the figure. Here, when the user selects [PANEL LOCK OFF] as shown in the figure, [PANEL LOCK OFF] is displayed with the white outline reversed. Next, when the user pushes the encoder 30e, the CPU 10 displays the window of the dialog D1 shown in FIG. 3E on the front surface of the PANEL LOCK screen displayed on the display 15. In the window of this dialog D1, at least selectable is [OFF] to unlock, and [ALL] to lock the parameter values displayed on the display unit 15 and the controls provided on the panel, although not shown. It is said that When the user wants to set the lock state, the user turns the encoder 30e and selects [ALL] as illustrated. [ALL] is the display with the white outline reversed. Then, the user pushes the encoder 30e to confirm the selection of [ALL]. As a result, the CPU 10 displays the home screen shown in FIG. 3F on the display unit 15 with the display values of the parameters of the display unit 15 of the power amplifier 1 and all the operators provided on the panel in the locked state. .
Although the operator of the panel in the locked state can be operated, the value of the parameter assigned to the operator is not changed even if the operator is operated, and the display value displayed on the display unit 15 is not changed. That is, in the locked state, the set value of the parameter on the current memory does not reflect the value according to the position and operation amount of the operator.

Next, when the panel lock is in the locked state and one of the operators provided on the panel is operated, the unlocking procedure of the panel lock is started. This unlocking procedure is shown in FIGS. 4A to 4G, a part of the panel of the power amplifier 1 is shown.
When any of the controls provided on the panel of the power amplifier 1 is operated, the CPU 10 opens a dialog D2 window shown in FIG. 4A on the front surface of the home screen displayed on the display unit 15. In this case, the Ach level knob 30a is operated, and the Ach level knob 30a is at the position after the operation in which the Ach level knob 30a is rotated right. In the window of this dialog D2, by turning the encoder 30e, the locked state (CANCEL), unlock (PARMANENTLY), or temporary unlock (TEMPORARILY) can be selected, and the user can select [OK]. 4] is selected and the encoder 30e is pushed, the selection of unlocking (PARMANENTLY) is confirmed, and the CPU 10 displays the front of the home screen displayed on the display 15 as shown in FIGS. 4 (b) and 4 (d). The window of the dialog D3 shown is displayed. In the window of this dialog D3, the encoder 30e is rotated to maintain the locked state [CANCEL], and the changed operator value at that time is directly reflected in the parameter value of the parameter assigned to the operator. [KNOB] and the current memory value in the parameter assigned to the manipulator (the setting value of the parameter in the current memory when locked) is returned to the manipulator You can select either [CUR ...] to enable the operation.

  Here, when the user turns the encoder 30e and selects [KNOB] in the dialog D3 as shown in FIG. 4B, [KNOB] is displayed with white voids reversed. Next, when the user pushes the encoder 30e, the selection of [KNOB] is confirmed, and thereby the CPU 10 releases the locked state and rewrites the current memory with the value after the operation of the operator, so that the operator is selected. The current memory value of the assigned parameter is updated, and the home screen shown in FIG. In this case, since the Ach level knob 30a is being operated, the parameter value of the Ach level in the current memory is rewritten to the value indicated by the Ach level knob 30a after the operation, and the digital signal processing unit 21 is updated with the parameter value. Performs signal processing. When performing this signal processing, it is preferable to gradually bring the parameter value closer to the value of the Ach level knob 30a after the operation. Further, on the home screen, the current output level of Ach is updated from -∞ dB to -35 dB (the value indicated by the Ach level knob 30a after the operation). When unlocked, the user can adjust the volume levels of Ach and Bch by rotating the Ach level knob 30a and Bch level knob 30f.

  Further, when the user turns the encoder 30e and selects [CUR ...] In the dialog D3 as shown in FIG. 4 (d), [CUR ...] is displayed with white voids reversed. Next, when the user pushes the encoder 30e, the selection of [CUR ...] is confirmed, whereby the CPU 10 causes the Ach level knob 30a and the Ach level knob 30a shown in FIG. 4 (e) to be displayed on the front surface of the home screen displayed on the display unit 15. The window of the dialog D4 in which the operator of the Bch level knob 30f is imitated and the simulated operator imitating the operation position is displayed is opened. In this dialog D4, the current memory values of the Ach and Bch levels in the current memory are indicated by white circles near the simulated operator. The current memory value is the parameter value set by the Ach level knob 30a and the Bch level knob 30f at the time of being locked. Here, since the Ach level knob 30a has been operated but the Bch level knob 30f has not been operated, the value of the Bch level knob 30f and the current memory value of the Bch level are equal to each other, and the simulated operator of the Bch is operated. [OK] is displayed in the vicinity to indicate this. Here, when the user performs an operation of rotating the Bch level knob 30f to the right, the CPU 10 rotates the position of the Bch level knob 30f after the operation to the right as shown in FIG. At the same time as the reflection, the value of the Bch level knob 30f deviates from the current memory value of the Bch level, so [OK] displayed near the Bch simulated operator is erased.

  When the user rotationally operates the Ach level knob 30a and the Bch level knob 30f to match the simulated operators of the Ach and Bch with the displayed white circles, the CPU 10 causes the values of the Ach level knob 30a and the Bch level knob 30f to change. , Ach and Bch are judged to have become equal to the current memory values, the locked state is released and the home screen shown in FIG. On the home screen, the current output levels of Ach and Bch are displayed as -∞ dB, which is the same as when the lock state was set. When unlocked, the user can adjust the volume levels of Ach and Bch by rotating the Ach level knob 30a and Bch level knob 30f.

  In the above description, the Ach level knob 30a is operated, and the unlocking procedure of the panel lock is started. However, when the operator of the panel other than the Ach level knob 30a and the Bch level knob 30f is operated, Also, the procedure for unlocking the panel lock is started. In this case, the values indicated by the operators of the Ach level knob 30a and the Bch level knob 30f coincide with the current memory value on the current memory of the operators, so that the user is shown in FIG. As shown, when [CUR ...] is selected in the dialog D3, the dialog D4 is unlocked without opening and the home screen shown in FIG. 4 (f) is displayed. In addition, when the user selects [KNOB] in the dialog D3 as shown in FIG. 4B, the current memory value on the current memory is unlocked without being updated, and the state shown in FIG. The home screen is displayed. Furthermore, the current output levels of Ach and Bch on the home screen are not updated.

  Next, FIG. 5 shows a flowchart of the panel lock process executed by the CPU 10. This panel lock process starts when the selection of [PANEL LOCK] is confirmed on the UTILITY screen shown in FIG. 3B, and in step S10, the CPU 10 is a setting screen shown in FIG. 3D. The PANEL LOCK screen is displayed on the display unit 15. Then, in step S11, the panel lock is changed to the locked state by performing the above-described procedure shown in FIGS. 3D and 3E, the setting screen is closed, and the home screen shown in FIG. 3F is displayed. To be done. Next, in step S12, the CPU 10 detects whether or not the operating element provided on the panel of the power amplifier 1 has been operated to change its state. When the CPU 10 does not detect that the state of the manipulator has changed (No), the process of step S12 is repeated, and when the CPU 10 detects that the state of the manipulator has changed (Yes), step S13. Proceed to. In step S13, the CPU 10 opens the window of the dialog D2 shown in FIG. In the window of the dialog D2, when the user selects [OK] by turning the encoder 30e and pushes the encoder 30e, the unlocking (PARMANENTLY) selection is confirmed, and the CPU 10 causes the CPU 10 to select either FIG. Open the dialog D3 window shown in d). In the window of the dialog D3, either [CANCEL], [CUR ...], or [KNOB] can be selected according to the usage status. When the user selects [CANCEL], the process returns to step S12 and the locked state is maintained. Come to do. When the user selects [KNOB], the value of the changed operator at that time is directly reflected in the parameter value, and the process proceeds to step S15. In this case, the parameter value of the parameter on the current memory is rewritten with the changed operator value, and the digital signal processing unit 21 performs signal processing with the parameter value. In step S15, the CPU 10 unlocks the panel lock, closes the window of the dialog D3 for selecting the unlocking method, and displays the home screen shown in FIG. As a result, the panel lock process ends. In this case, since the lock is released, the user can rotate the Ach level knob 30a and the Bch level knob 30f to adjust the volume levels of the Ach and Bch.

  Further, when the user selects [CUR ...] In step S14, the CPU 10 branches to step S17 so that the operation of the manipulator becomes valid when the value of the manipulator is returned to the current memory value. In step S17, the CPU 10 imitates the operators of the Ach level knob 30a and the Bch level knob 30f shown in FIG. 4E, and opens the window of the dialog D4 displaying the simulated operator imitating the operation position. Proceed to S18. Here, when the Ach level knob 30a or the Bch level knob 30f is rotationally operated, in step S18, the CPU 10 rotates and displays the simulated operator in the dialog D4 according to the content of the rotational operation. Next, in step S19, the CPU 10 determines whether or not the value of the rotational position of the Ach level knob 30a and the Bch level knob 30f at that time is equal to the current memory value. Until the CPU 10 determines that the value of the rotational position of the Ach level knob 30a and the Bch level knob 30f at that point of time is equal to the current memory value, the processing of steps S18 and S19 is repeated, and the CPU 10 determines the rotational position. If it is determined that the value is equal to the current memory value, the process proceeds to step S20. In step S20, the CPU 10 unlocks the panel lock, closes the window of the dialog D3 for selecting the unlocking method, and displays the home screen shown in FIG. As a result, the panel lock process ends. In this case, since the lock is released, the user can rotate the Ach level knob 30a and the Bch level knob 30f to adjust the volume levels of the Ach and Bch.

Next, FIG. 6 shows a flowchart of another panel lock process executed by the CPU 10.
Since the processing of steps S10 to S12 in the panel lock processing shown in FIG. 6 is as described above, the description thereof will be omitted, but in step S12, the CPU 10 detects that the state of the operator has changed (Yes). ), The process proceeds to step S30. In step S30, the CPU 10 displays a password input dialog and prompts the user to input the password. When the user inputs the password, the CPU 10 determines in step S13 whether the input password has been correctly input. Here, when the CPU 10 determines that the correct password has not been input (No), the CPU 10 displays a dialog indicating that the password is incorrect and repeats the process of step S31 until the correct password is input. . When the CPU 10 determines in step S31 that the correct password has been input (Yes), the process proceeds to step S13. Since the processes of steps S13 to S20 are as described above, the description thereof will be omitted.
Since the other panel lock process shown in FIG. 6 includes steps S30 and S31 for performing the password input process, it is possible to improve security and prevent anyone other than the person in charge from unlocking.

Next, FIG. 7 shows a flowchart of still another panel lock process executed by the CPU 10.
Since the processes of steps S10 to S12 and the processes of steps S30 and S31 in the panel lock process shown in FIG. 7 are as described above, the description thereof will be omitted. If it is determined that the input has been made (Yes), the process proceeds to step S17. Since the processes of steps S17 to S20 are as described above, the description thereof will be omitted. However, in still another panel lock process shown in FIG. 7, the processes of steps S14 to S16 are omitted and the lock is released. , The operation of the manipulator is enabled when the manipulator value is returned to the current memory value. This is because the volume level may change abruptly if the changed operator value at that time is directly reflected in the parameter value. In still another panel lock process, when the value of the manipulator is returned to the current memory value, the lock is released, the operation of the manipulator becomes valid, and steps S30 and S31 for performing a password input process are provided. Therefore, it is possible to increase the security so that only the person in charge can unlock.

In the unlocking method according to the present invention described above, the example of the power amplifier for 2ch has been shown, but the present invention can be applied to audio devices other than 2ch, for example, audio devices such as 4ch, 8ch. Further, the lock releasing method of the present invention is not limited to the power amplifier and can be applied to a setting method such as an audio device other than the power amplifier, for example, a speaker processor or a stage box for expanding the input / output of the digital mixer. Further, the unlocking method according to the present invention is the unlocking method of the panel lock, but it is not limited to the display of the display provided on the panel and the lock of the operator, and the display provided on other than the panel. It can be applied to the method of unlocking the display of the device and the lock of the controls.
In the unlocking method according to the present invention, the values indicated by the operators of the Ach level knob 30a and the Bch level knob 30f are different from the current memory value (setting value) on the current memory corresponding to the operators. In this case, since the dialog displaying the simulated operator is opened, it is possible to visually understand that the value of the operator is different from the set value, and it is easy to understand. In this case, when the operator deviating from the set value is operated and the value indicated by the operator is made equal to the set value, the lock is released. It can be unlocked easily. Further, in the locked state, when any one of the controls on the panel is operated, a method selection screen for releasing the locked state is displayed, and on the method selection screen, the set value is equal to the value of the control. At this time, at least one of the method of unlocking when it becomes impossible and the method of unlocking by updating the set value with the value of the operator at that time can be selected, so unlock according to the usage situation. You can

1 power amplifier, 2 external source, 3 speaker, 10 CPU, 11 flash memory, 12 RAM, 13 other I / O, 14 operator, 15 indicator, 20 waveform input section, 21 digital signal processing section, 22 D / A・ A / D section, 23 analog power amplification section, 24 bus, 30a Ach level knob, 30b Ach selection button, 30c menu key, 30d return key, 30e rotary encoder, 30f Bch level knob, 30g Bch selection button, 31 power switch

Claims (5)

There is a normal state in which the value indicated by the operator is reflected in the set value, and a locked state in which the value indicated by the operator is not reflected in the set value.
When releasing the locked state, if the set value and the value indicated by the operator at that time are different, a display screen indicating that is displayed, and the set value and the operator indicated at that time are displayed. The method of unlocking an audio device , wherein the display screen is not displayed when the values are equal to each other. The unlocking method for an audio device according to claim 1, wherein the set value in the locked state is a value indicated by the operator when the locked state is set. The unlocking method for an audio device according to claim 2, wherein the locked state is released when the value indicated by the operator is matched with the set value while the display screen is displayed. . The manipulator is a physical manipulator, and when the manipulator is operated in the locked state, the setting is performed by displaying a simulated manipulator imitating an operation state of the manipulator on the display screen. The method of unlocking an audio device according to claim 1, wherein a difference between the value and the value indicated by the operator at that time is displayed. The method for unlocking an audio device according to claim 4, wherein a plurality of the operators are provided.