JP6763161B2 - How to unlock - Google Patents

Description

The present invention relates to an unlocking method capable of unlocking according to a usage situation when the panel lock is in the locked state.

A conventional power amplifier is provided with a plurality of controls including an attenuator controller on the panel, and when the power amplifier is installed, settings suitable for the installation location and usage environment are made. If a person other than the person in charge operates the panel operator after the setting is made, the suitable setting may be changed and a problem may occur. Therefore, the front surface of the panel is covered with a cover so that only the person in charge can operate the operator. Further, in a digital power amplifier, there is a power amplifier having a panel lock function that makes it impossible to operate the panel so as not to accidentally operate the 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 temporarily releases the locked state by performing a special operation of pressing the [HOME] button and the [EXIT] button at the same time for 3 seconds or longer when the panel lock is in the locked state. be able to. Then, by setting the Panel to Normal with the panel lock released, the panel lock can be invalidated. 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, a volume whose operation position corresponds to the volume level may be used as an operator for adjusting the volume level, and if the volume is operated in the locked state, the volume operation position will be changed to the volume operating position when the locked state is released. It will be changed to the corresponding volume level. In this case, when unlocking the panel lock, depending on the usage situation, you want to reflect the changed operator value as it is, or you want to return the operator value to the set value before enabling the operation. There was a case.

Therefore, an object of the present invention is to provide an unlocking method capable of unlocking according to a usage situation.

In order to achieve the above object, the unlocking method of the present invention includes 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 the operator is operated in the locked state, a method selection screen for releasing the locked state is displayed. In the method selection screen, when the set value and the value indicated by the operator become equal to each other. There are at least a method of unlocking and a method of updating the set value with the value indicated by the operator at the time the operator is operated to unlock it, and the most important method is to be able to select one of the prepared methods. It is a feature.
The present invention can be carried out as a method as described above, or can be carried out in any form such as a system or an apparatus.

In the unlocking method of the present invention, when the operator is operated when releasing the locked state, a method selection screen for releasing the locked state is displayed, and the set value and the operator are displayed on the method selection screen. At least one of the method of releasing when the value indicated by is equal to the value indicated by and the method of updating the set value with the value indicated by the operator at the time when the operator is operated and unlocking can be selected. As a result, when releasing the locked state, it is possible to select whether to match the set value with the current value indicated by the operator or to use the set value as it is, so that an operation suitable for the usage situation at that time becomes possible.

It is a functional block diagram which shows the structure of the power amplifier which can carry out the unlocking method of this invention. It is a figure which shows the structure of the operation panel of the power amplifier which can carry out the unlocking method of this invention. It is a figure which shows the procedure of setting a panel lock in a locked state in the power amplifier which can carry out the unlocking method of this invention. It is a figure which shows the procedure of unlocking a panel lock in the power amplifier which can carry out the unlocking method of this invention. It is a flowchart of the panel lock processing executed in the power amplifier which can carry out the unlocking method of this invention. It is a flowchart of another panel lock processing executed in the power amplifier which can carry out the unlocking method of this invention. It is a flowchart of still another panel lock processing executed in the power amplifier which can carry out the unlocking method of this invention.

Hereinafter, embodiments 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 carrying out 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. A waveform input unit 20, a digital signal processing unit 21, a D / A / A / D unit 22, and an analog power amplification unit 23 are provided, and these are connected by a bus 24. The above-mentioned digital signal processing unit 21 can be configured by a DSP (Digital Signal Processor).

Of these, the CPU 10 is a control means that controls the operation of the power amplifier 1 in an integrated manner, and by executing a control program stored in the flash memory 11, parameters can be edited according to the operation of the operator 14 and the display 15 can be used. Performs processing such as display control and panel lock lock status / unlock control. The flash memory 11 is a rewritable non-volatile storage means that stores a control program executed by the CPU 10 and SP presets corresponding to config data and speakers. The config data defines the path of the sound signal from the input unit to the output unit and the signal processing in that path. The RAM 12 is a volatile storage means for the CPU 10 to write and read various data, and can also be used as a work memory of the CPU 10 and a current memory for storing a current memory value which is a set value currently set in the digital signal processing unit 21. used. The other I / O 13 is an interface for connecting various external devices to perform communication. Other standards used for communication in I / O 13 can be any standard such as Ethernet (trademark) and USB (Universal Serial Bus), and wired wireless is not limited. The display 15 is a display means for displaying various information under the control of the CPU 10, and can be configured by, for example, a liquid crystal panel (LCD) or a light emitting diode (LED).

Explaining the configuration of the path from the input unit to the output unit of the sound signal, the waveform input unit 20 can receive the analog Ach and Bch sound signals from the external source 2 and convert them into digital sound signals, respectively. Is supplied 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 digital sound signal, and D / A / A / the processed sound signal. Output to D section 22. The D / A / A / D unit 22 converts each digital sound signal into an analog sound signal and supplies it to the analog power amplification unit 23. The analog power amplification unit 23 power-amplifies each analog sound signal, and outputs the amplified Ach and Bch sound signals from the speaker terminal to the external speaker 3.

The configuration of the operation panel of the power amplifier 1 is shown in FIG. As shown in FIG. 2, the operation panel is provided with a rectangular display 15 on the upper side in the center and a power switch 31 on the lower left side. The Ach level knob 30a for controlling the output level of the Ach sound signal and the Ach selection button 30b marked with "A" are vertically arranged on the right side of the power switch 31, and the menu key (Menu) 30c and the return are on the right side. 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 on which "B" is written are vertically arranged. Further, a power lamp (POWER) and a warning lamp (ALERT) are arranged on the upper side of the power switch 31, and protection lamps (PL A, PL B) of Ach and Bch are arranged on the upper side of the selection buttons 30b and 30g of Ach and Bch. Have been placed. The power amplifier 1 is provided with a protection circuit, and when an abnormality in the output stage of each channel is detected by the protection circuit, the CPU 10 lights 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. The home screen, which is a basic screen, is displayed on the illustrated display 15, and the current output levels of Ach and Bch (Ach is −15 dB, Bch is -19 dB) are mainly displayed on the home screen.

Next, FIGS. 3A to 3F show a procedure for setting the panel lock that locks 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 lock state / unlock 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. 3A. As a result, the CPU 10 displays the menu screen shown in FIG. 3B on the display 15. On this menu screen, one of a plurality of prepared menus can be selected, and here, the user selects [UTILITY] as shown in the figure. In this case, the selected [UTILITY] is displayed with the white outline reversed. The user then pushes the encoder 30e. As a result, the selection of [UTILITY] is confirmed, and the CPU 10 displays the UTILITY screen shown in FIG. 3C on the display 15.

On this UTILITY screen, you can select one of the multiple utilities provided, and when the user selects [PANEL LOCK] as shown, [PANEL LOCK] will be displayed with the white outline reversed. .. Then, 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. 3D on the display 15. On this PANEL LOCK screen, the panel lock status and PIN CODE are displayed. In this case, since the panel lock is in the unlocked status, [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 highlighted. Next, when the user pushes the encoder 30e, the CPU 10 displays the window of the dialog D1 shown in FIG. 3 (e) in front of the PANEL LOCK screen displayed on the display 15. In the window of this dialog D1, at least [OFF] for unlocking and [ALL] for locking the parameter values displayed on the display 15 and the controls provided on the panel, which are not shown, can be selected. It is said that. If the user wants to lock the encoder, the user turns the encoder 30e and selects [ALL] as shown in the figure. [ALL] is an inverted display of white outline. The user then 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 15 with the display values of the parameters of the display 15 of the power amplifier 1 and all the controls provided on the panel locked. ..
Although the operator of the panel in the locked state can be operated, the value of the parameter assigned to the operator does not change, and the display value displayed on the display 15 does not change. That is, in the locked state, the set value of the parameter on the current memory does not reflect the value corresponding to the position and the operation amount of the operator.

Next, when any of the controls provided on the panel is operated while the panel lock is in the locked state, the procedure for unlocking the panel lock is started. The unlocking procedure is shown in FIGS. 4A to 4G. 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 the window of the dialog D2 shown in FIG. 4A in front of the home screen displayed on the display 15. In this case, the Ach level knob 30a is operated, and the Ach level knob 30a is in the position after the operation of being rotated clockwise. In the window of this dialog D2, the locked state (CANCEL), unlock (PARMANENTLY), or temporary unlock (TEMPORARILY) can be selected by turning the encoder 30e, and the user can select [OK]. ] Is selected and the encoder 30e is pushed, the selection of unlock (PARMANENTLY) is confirmed, and the CPU 10 displays in FIGS. 4 (b) and 4 (d) in front of the home screen displayed on the display 15. The window of the dialog D3 shown is displayed. In the window of this dialog D3, [CANCEL] that maintains the locked state by turning the encoder 30e and the value of the operator after the change at that time are directly reflected in the parameter value of the parameter assigned to the operator. After returning the value of the operated operator to [KNOB] and the current memory value of the parameter assigned to the operator (the set value of the parameter on the current memory when locked), the operator 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. 4 (b), [KNOB] is displayed with the white outline reversed. Next, when the user pushes the encoder 30e, the selection of [KNOB] is confirmed, whereby the CPU 10 releases the locked state and rewrites the current memory with the value after the operation of the operator to the operator. The current memory value of the assigned parameter is updated, and the home screen shown in FIG. 4C is displayed on the display 15. In this case, since the Ach level knob 30a is 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 rewritten with the parameter value. Performs signal processing. When performing this signal processing, it is preferable that the CPU 10 controls the parameter value so as to gradually approach 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 (value indicated by the Ach level knob 30a after operation). When the lock is released, the user can adjust the volume levels of the Ach and Bch by rotating the Ach level knob 30a and the 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 the white outline reversed. Next, when the user pushes the encoder 30e, the selection of [CUR ...] is confirmed, so that the CPU 10 displays the Ach level knob 30a and the Ach level knob 30a shown in FIG. 4 (e) on the front of the home screen displayed on the display 15. While imitating the actuator of the Bch level knob 30f, the window of the dialog D4 in which the simulated encoder 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 in the vicinity of the simulated operator. The current memory value is a 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 is operated but the Bch level knob 30f is not operated, the value of the Bch level knob 30f is equal to the current memory value of the Bch level, and the Bch simulated operator [OK] is displayed in the vicinity to that effect. 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. 4 (f), and becomes a simulated Bch operator. At the same time, since the value of the Bch level knob 30f deviates from the current memory value of the Bch level, [OK] displayed in the vicinity of the Bch simulated operator is deleted.

Further, when the user rotates the Ach level knob 30a and the Bch level knob 30f to align the simulated controls of the Ach and Bch with the displayed white circles, the CPU 10 sets the values of the Ach level knob 30a and the Bch level knob 30f. , Ach and Bch levels are determined to be equal to the current memory values, the locked state is released, and the home screen shown in FIG. 4 (g) is displayed on the display 15. 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 the lock is released, the user can adjust the volume levels of the Ach and Bch by rotating the Ach level knob 30a and the Bch level knob 30f.

In the above description, it has been explained that the Ach level knob 30a is operated to start the procedure for unlocking the panel lock. However, when the panel controls other than the Ach level knob 30a and the Bch level knob 30f are operated, The procedure for unlocking the panel lock is also started. In this case, the values indicated by the controls of the Ach level knob 30a and the Bch level knob 30f match the current memory values on the current memory of the controls, so that the user can see in FIG. 4 (d). 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. Further, when the user selects [KNOB] in the dialog D3 as shown in FIG. 4 (b), the current memory value on the current memory is unlocked without being updated, and is shown in FIG. 4 (c). The home screen is displayed. Furthermore, the current output levels of Ach and Bch on the home screen are not updated either.

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. 3 (b), and in step S10, the CPU 10 is shown in FIG. 3 (d) as the setting screen. The PANEL LOCK screen is displayed on the display 15. Next, by performing the above procedure shown in FIGS. 3 (d) and 3 (e) in step S11, the panel lock is changed to the locked state, the setting screen is closed, and the home screen shown in FIG. 3 (f) is displayed. Will be done. Next, in step S12, the operator provided on the panel of the power amplifier 1 is operated, and the CPU 10 detects whether or not the state has been changed. If the CPU 10 does not detect that the state of the operator has changed (No), the process of step S12 is repeated, and if the CPU 10 detects that the state of the operator has changed (Yes), step S13. Proceed to. In step S13, the CPU 10 opens the window of the dialog D2 shown in FIG. 4A. In the window of dialog D2, when the user selects [OK] by turning the encoder 30e and pushes the encoder 30e, the selection of unlock (PARMANENTLY) is confirmed, and the CPU 10 determines FIG. 4 (b) or FIG. 4 ( Open the window of the dialog D3 shown in d). In the window of dialog D3, one of [CANCEL], [CUR ...], and [KNOB] can be selected according to the usage situation, and when the user selects [CANCEL], the process returns to step S12 and the locked state is maintained. Will come to do. When the user selects [KNOB], the changed operator value 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 value of the operator after the change, and the digital signal processing unit 21 performs signal processing with the parameter value. In step S15, the CPU 10 releases the locked state of the panel lock, closes the window of the dialog D3 for selecting the release method, and displays the home screen shown in FIG. 4C on the display 15. As a result, the panel lock process is completed. In this case, since the lock is released, the user can adjust the volume levels of the Ach and Bch by rotating the Ach level knob 30a and the Bch level knob 30f.

Further, when the user selects [CUR ...] In step S14, the CPU 10 branches to step S17 so that the operation of the operator becomes effective when the value of the operator is returned to the current memory value. In step S17, the CPU 10 imitates the controls of the Ach level knobs 30a and the Bch level knobs 30f shown in FIG. 4 (e), and opens the window of the dialog D4 that displays the simulated controls that imitate the operation positions. Proceed to S18. Here, when the Ach level knob 30a or the Bch level knob 30f is rotated, in step S18, the CPU 10 rotates and displays the simulated operator in the dialog D4 according to the rotation operation content. Next, in step S19, the CPU 10 determines whether or not the value of the rotation position of the Ach level knob 30a and the Bch level knob 30f at that time is equal to the current memory value. The processes of steps S18 and S19 are repeated until the CPU 10 determines that the value of the rotation position of the Ach level knob 30a and the Bch level knob 30f at that time is equal to the current memory value, and the CPU 10 is in the rotation position. If it is determined that the value and the current memory value are equal, the process proceeds to step S20. In step S20, the CPU 10 releases the locked state of the panel lock, closes the window of the dialog D3 for selecting the release method, and displays the home screen shown in FIG. 4 (g) on the display 15. As a result, the panel lock process is completed. In this case, since the lock is released, the user can adjust the volume levels of the Ach and Bch by rotating the Ach level knob 30a and the Bch level knob 30f.

Next, FIG. 6 shows a flowchart of another panel lock process executed by the CPU 10.
Since the processes of steps S10 to S12 in the panel lock process shown in FIG. 6 are 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). ), Proceeding to step S30. In step S30, the CPU 10 displays a dialog for entering a password and prompts the user to enter the password. When the user inputs the password, in step S13, the CPU 10 determines whether or not the input password is correctly input. Here, if the CPU 10 determines (No) that the correct password has not been entered, the CPU 10 displays a dialog indicating that the password is incorrect and repeats the process of step S31 until the correct password is entered. .. If the CPU 10 determines in step S31 that the correct password has been entered (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 enhance security so that only the person in charge can unlock the panel.

Next, FIG. 7 shows a flowchart of yet 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, but in step S31, the CPU 10 has the correct password. 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 the other panel lock process shown in FIG. 7, the processes of steps S14 to S16 are omitted, and when the lock is released, the process is omitted. , The operation of the manipulator is enabled when the value of the manipulator is returned to the current memory value. This is because if the changed operator value at that time is reflected in the parameter value as it is, the volume level may change suddenly. Further, in the other panel lock process, the lock is released when the value of the operator is returned to the current memory value, the operation of the operator becomes valid, and steps S30 and S31 for performing the password input process are provided. Therefore, it is possible to increase security so that only the person in charge can unlock it.

In the unlocking method according to the present invention described above, an example of a 2ch power amplifier has been shown, but the present invention can also be applied to audio equipment other than 2ch, for example, audio equipment such as 4ch and 8ch. Further, the unlocking method of the present invention is not limited to the power amplifier, and can be applied to a setting method of an audio device other than the power amplifier, for example, a speaker processor or a stage box for expanding the input / output of a digital mixer. Further, although the unlocking method according to the present invention is the unlocking method of the panel lock, the unlocking method is not limited to the display of the display provided on the panel and the lock of the operator, and the display provided other than the panel. It can be applied to the display of the device and the unlocking method of the lock of the operator.
Further, in the unlocking method according to the present invention, the values indicated by the controls of the Ach level knob 30a and the Bch level knob 30f deviate from the current memory values (set values) on the current memory corresponding to the controls. In this case, a dialog for displaying the simulated operator is opened, so that the value of the operator can be visually grasped and easily understood. In this case, if the operator that deviates from the set value is operated and the value indicated by the operator is equal to the set value, the lock is released. Therefore, the lock can be released only by operating the operator, which is quick and quick. It can be easily unlocked. Further, when any of the panel controls is operated in the locked state, a method selection screen for releasing the locked state is displayed, and the set value and the operator value are equal on the method selection screen. Since it is now possible to select at least one of the method of unlocking when it becomes, and the method of unlocking by updating the set value with the value of the operator at that time, unlock it according to the usage situation. Can be done.

1 Power amplifier, 2 External source, 3 Speaker, 10 CPU, 11 Flash memory, 12 RAM, 13 Other I / O, 14 Operator, 15 Display, 20 Waveform input unit, 21 Digital signal processing unit, 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 (2)

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 the operator is operated in the locked state, a method selection screen for releasing the locked state is displayed. In the method selection screen, when the set value and the value indicated by the operator become equal to each other. There are at least a method of unlocking and a method of updating the set value with the value indicated by the operator at the time when the operator is operated to unlock it, and one of the prepared methods can be selected. How to unlock. When the method of updating the set value with the value of the operator at the time when the operator is operated and unlocking is selected, the value of the set value is gradually changed from the value of the set value in the locked state to the value of the operator. The unlocking method according to claim 1, wherein the lock is controlled so as to approach the indicated value.