JP2004125418A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment having superior operability which can reset measuring condition and setting which are once established, by simple key operation using a memory of small capacity. <P>SOLUTION: The electronic equipment is so constituted that desired processing is executed by operating prescribed operation object relative to processing purpose and introducing and inputting operation condition to an operation control part. The electronic equipment is characterized, by installing a steerable hysteresis memory which stores kinds of processing to be performed by operation of the operation object, according to time series, and a readout direction indication part for indicating that description data of processing stored in the memory are read along the desired direction of time series. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an oscilloscope and a power supply configured to execute a desired process by operating an operation target (hereinafter, referred to as an operation target) such as a key, a switch, or a rotary knob and inputting operation conditions to an arithmetic control unit. More specifically, the present invention relates to a measuring instrument such as a meter, various home appliances, and electronic devices such as industrial devices, and more particularly to improvement in operability thereof.
[0002]
[Prior art]
FIG. 10 is a configuration block diagram of a digital oscilloscope shown as an example of the electronic apparatus.
An arithmetic control unit (hereinafter referred to as a CPU) 101 controls the entire oscilloscope, and each functional block described below is connected via a bus.
[0003]
The analog / ADC unit 102 amplifies or attenuates an analog input signal to a value suitable for A / D conversion, inputs the amplified signal to an A / D converter, and converts and outputs digital data.
[0004]
An acquisition unit (hereinafter referred to as an ACQ unit) 103 stores digital data output from the analog / ADC unit 102 and performs an operation on the digital data to generate pixel display data of a waveform display portion.
[0005]
The display 104 is, for example, an LCD, and displays character information such as waveforms and settings of analog input signals, measured values, grids and cursors, and the like.
[0006]
The memory 105 includes a ROM for storing a program of the CPU, a RAM for temporarily storing data, an SRAM backed up by a battery, and the like.
[0007]
The external storage device 106 is a hard disk drive, a floppy (registered trademark) disk drive, a ZIP drive, or the like.
[0008]
An interface unit (I / F unit) 107 exchanges data with an external device such as a personal computer or a printer.
[0009]
The key operation units 108 to 119 constitute an operation panel unit functioning as a man-machine interface.
[0010]
The menu key 108 displays a menu including soft key items such as waveform display conditions, communication, and file operations.
[0011]
The function keys 109 to 112 correspond to a menu called by pressing the menu key 108, and select a desired operation from these items.
[0012]
The channel keys 113 and 114 are used to select and specify a measurement channel for which the operation of the keys and knobs relating to the waveform becomes effective. When these keys are pressed, a menu for setting the input resistance and the attenuation ratio of the probe is displayed. . The channel key 113 selects and specifies the measurement channel 1 (hereinafter CH1), and the channel key 114 selects and specifies the measurement channel 2 (hereinafter CH2).
[0013]
A start / stop key 115 instructs start / stop of sampling.
[0014]
The zoom key 116 displays a menu for enlarging and displaying the waveform displayed on the display 104.
[0015]
The encoder knob 117 sets the time per grid division (1 div) on the time axis of the waveform display screen. Generally, an oscilloscope can be set in increments of 1, 2, 5, and 10 (carry).
[0016]
The encoder knob 118 sets a voltage value per grid division (1 div) of the voltage axis with respect to the waveform of the channel selected by the channel keys 113 and 114.
[0017]
The UP / DOWN knob 119 increases or decreases the set value.
[0018]
An enter key 120 is used to confirm and input the value set by the UP / DOWN knob 119.
[0019]
The reset key 121 returns the value set by the UP / DOWN key 119 to an initial value.
[0020]
FIG. 11 shows a part of the menu configuration assigned to the key operation units 108 to 119 of the operation panel unit.
For example, when changing the magnification of the ZOOM screen,
1) ZOOM key 116
2) F2 key 110
Press each key in the order of. Thereby, a menu for changing the magnification of the ZOOM screen can be displayed, and the magnification value can be changed with the UP / DOWN knob 119.
[0021]
On the other hand, the following key operations are performed to save the measurement conditions and communication settings in the backup SRAM.
First, a backup SRAM is set as a storage medium.
1) MENU key 108
2) F2 key 110
3) F3 key 111
4) F4 key Next, a save instruction is issued.
1) MENU key 108
2) F2 key 110
3) F1 key 109
4) F3 key 111
[0022]
Conversely, when reading the measurement conditions and communication settings from the backup SRAM, the following key operations are performed.
First, a backup SRAM is set as a read destination medium.
1) MENU key 108
2) F2 key 110
3) F3 key 111
4) F4 key Next, a read instruction is issued.
1) MENU key 108
2) F2 key 110
3) F2 key 110
4) F3 key 111
[0023]
As described above, in the conventional digital oscilloscope, an instruction such as a key operation is required to hold the measurement conditions and settings.
Further, when these are read and reset, only the settings at the time when the saving is instructed can be read.
This is convenient when the measurement conditions and settings are changed infrequently.However, in the evaluation of electronic circuits, for example, there are no fixed measurement conditions and settings, and changes are frequently made. The opportunity to use the function is limited.
[0024]
As an example, consider a case where a rectangular waveform of 50 Hz with a constant amplitude having a rise of about 100 ns and a fall of about 10 ms is observed. For the sake of simplicity, it is assumed that the minimum setting change that can capture the change in the waveform is performed.
First, a rising waveform of about 100 ns is observed with the following settings, and this is printed by a printer.
a) Time axis setting: 100 ns / div
b) Trigger edge: Rise c) Trigger position: Center of the screen Observe at the fall time of about 10 ms or less, and print this with a printer.
a) Time axis setting: 5 ms / div
b) Trigger edge: Falling c) Trigger position: 1 div from the left of the screen Here, if we try to observe a rising waveform of about 100 ns again,
a) Time axis setting: 100 ns / div
b) Trigger edge: rising c) Trigger position: Reset the center of the screen by the following key operation again.
1) Change to 100 ns / div with time setting knob 117 2) Menu key 108
3) F1 key 109
4) F2 key 110
5) Change trigger edge to rising with F1 key 110 6) Menu key 108
7) F1 key 109
8) F3 key 9) Change trigger position to center with UP / DOWN knob 119 In these series of operations, it is very complicated because the positions where the keys are pressed are varied and the knob needs to be adjusted.
[0025]
Also, for example, the UNDO and REDO functions are incorporated in the application software of a personal computer. However, since they store calculations and displays that are executed and processed according to the operation, the processing is complicated and a large amount of data is stored. In order to handle, a memory and an external storage device corresponding to it are required.
[0026]
[Patent Document 1]
JP-A-6-333060 (pages 3, 4; FIG. 2)
[0027]
Patent Literature 1 describes that when a history function instruction “KR” is issued from a host computer, the state of subsequent key operations is sequentially returned to the host computer.
Although this function enables learning curriculum information and educational considerations for workers and learners, it is not intended to solve the complexity of key operations in specific measurement work with a small memory capacity.
[0028]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide an electronic device having excellent operability in which measurement conditions and settings that have been once set by a simple key operation can be reset using a small-capacity memory.
[0029]
[Means for Solving the Problems]
The invention of claim 1, which achieves such an object,
An electronic device configured to execute a desired process by operating a predetermined operation target corresponding to a processing purpose and inputting an operation condition to the arithmetic control unit,
An operation history memory that stores the type of processing executed by the operation of the operation target in chronological order;
A readout direction instructing unit that instructs to read out the process type data stored in the operation history memory in a desired time-series direction;
Is provided.
[0030]
According to a second aspect of the present invention, in the electronic device according to the first aspect,
The reading direction instructing unit is an undo key and a redo key.
[0031]
According to a third aspect of the present invention, in the electronic device according to the first aspect,
The reading direction indicating section is a knob rotatable in forward and reverse directions.
[0032]
According to a fourth aspect of the present invention, in the electronic device according to the third aspect,
The reading speed changes according to the rotation of the knob.
[0033]
According to a fifth aspect of the present invention, in the electronic device according to the third or fourth aspect,
A read direction indicator function and another control function are assigned to one knob, and these functions are alternately switched by a switch.
[0034]
According to a sixth aspect of the present invention, in the electronic device according to any one of the first to fifth aspects,
The electronic device is a measuring instrument including a digital oscilloscope and a power meter.
[0035]
According to a seventh aspect of the present invention, in the electronic device according to any one of the first to fifth aspects,
The electronic device is one of a home appliance and an industrial device.
[0036]
These make it easy to reset the measurement conditions that have been set once for electronic measuring instruments and the operating conditions that have been set once for various electronic devices such as home appliances and industrial equipment. Can be done by operation. In these resettings, only the type of execution processing by the key operation is stored in the memory without storing the processing result such as the calculation or display instructed by the key operation, so that the memory can be realized with a small capacity memory.
[0037]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a configuration block diagram showing an example of an embodiment of the present invention. The same reference numerals are given to the same parts as those in FIG. 10, and the description of the overlapping parts will be omitted.
The difference between FIG. 1 and FIG. 10 is that FIG. 1 is provided with an operation history memory in the memory 105 or the storage device 106 for storing the type of processing executed by the operation of the operation target in time series. An undo (UNDO) key 122 and a redo (REDO) key 123 are provided as read direction instructing units for instructing to read out the processing type data stored in the history memory in a desired time-series direction. It is.
[0038]
The UNDO key 122 is a key for returning a current setting state to a past setting state by a predetermined operation.
The REDO key 123 is a key for returning from the state returned to the past setting state by the UNDO key 122 by a predetermined operation again in the time lapse direction.
[0039]
FIG. 2 is an explanatory diagram of an initial state of a ring buffer memory used as an operation history memory, and FIG. 3 is an explanatory diagram of a state of the ring buffer memory when an operation target is operated. For example, the ring buffer memory has a capacity of 256 bytes and can store 254 key histories. Also, to simplify the operation description, it is assumed that the addresses on the memory start from the address 00H.
[0040]
4 to 7 are flowcharts showing the flow of processing when the operation target is operated, and FIG. 8 is a diagram for changing the setting of the digital oscilloscope corresponding to the type of processing executed by the operation of the operation target and recognizing the change. It is a correspondence list with the code.
[0041]
First, when the operation of the operation target is performed, the KEY interrupt routine is activated.
In the KEY interrupt routine shown in FIG. 4, it is first determined whether the UNDO key 122 is pressed (SP1), whether the REDO key 123 is pressed (SP2), or whether any other operation target is being operated.
[0042]
When the operation of the operation target other than the UNDO key 122 and the REDO key 123 is performed, the execution code corresponding to the single operation and the combination operation of the measurement object is determined from the list of FIG. 8 (SP3). The determined execution code is written into the ring buffer memory by the routine indicated by A in FIG. 4 (SP4). Thereafter, this code is sent to the KEY / knob execution routine (SP5), and processing corresponding to this code is executed.
[0043]
When the operation of the UNDO key 122 is performed, the execution code is read from the ring buffer memory at the time of UNDO in the routine shown in FIG. 4B (SP6). Thereafter, this code is sent to the KEY / knob execution routine (SP5), and processing corresponding to this code is executed.
[0044]
When the operation of the REDO key 123 is performed, the execution code is read from the ring buffer memory at the time of the REDO in the routine shown in FIG. 4C (SP7). Thereafter, this code is sent to the KEY / knob execution routine (SP5), and processing corresponding to this code is executed.
[0045]
The processing flow of the routine A in FIG. 4 will be described with reference to the flowchart in FIG.
First, the execution code Ccode of the command to be executed determined in the preprocessing is written into an address Padd (hereinafter, referred to as a write pointer) on the ring buffer (SP1). Subsequently, 1 is added to the write pointer Padd (SP2). Thereafter, it is determined whether or not the write pointer Padd exceeds FFH (SP3). If it does, it is set to 00H (SP4). As a result, the write address is corrected so as to have a ring shape. The write pointer Padd finally obtained in this manner becomes an address where the execution code is written next.
[0046]
An execution code indicating REDO prohibition is written on the address of the write pointer Padd processed in SP2 or SP4. In this writing, Padd0 is temporarily substituted as an address obtained by adding 1 to the write pointer Padd (SP5). . Thereafter, it is determined whether or not the write pointer Padd0 exceeds FFH (SP6), and if it does, it is set to 00H (SP7). Then, the execution code 00H indicating UNDO prohibition is written to the address indicated by Padd0 (SP8).
[0047]
For example, when the time axis change knob 117 is turned to the right, the operation code 05H is determined since the time per 1 division of the time axis is operated to be increased by one step, and this is written to the ring buffer. Then, it is sent to the KEY / knob execution routine, and the corresponding ADC sampling time of the analog / ADC unit 102, the calculation setting of the ACQ unit 103, and the change of the display unit 104 are performed.
[0048]
Furthermore, when the voltage axis change knob 118 is turned to the right after the 1CH key 113 is pressed, since the voltage range is operated so as to increase by one step, the execution code 01H is determined, and this is written to the ring buffer, and furthermore, The data is sent to the KEY / knob execution routine to change the divider and display of the analog / ADC unit 102 corresponding thereto. The explanatory diagram of the ring buffer in FIG. 2 shows a state after these operations are performed.
[0049]
The processing flow of the routine B of FIG. 4 will be described with reference to the flowchart of FIG.
1 is subtracted from the write pointer Padd and is temporarily assigned to Padd0 (SP1).
Here, it is determined whether or not Padd0 is below 00H (SP2). If it is below, this is set to FFH (SP3). As a result, the write address is corrected so as to have a ring shape. Padd0 obtained in this manner is the address where the execution code of the last setting change process in the current setting state is written.
[0050]
The execution code Ccode of the last setting change process in the current setting state is read from the address indicated by Padd0 (SP4). Then, it is determined whether or not Ccode is 00H (SP5). If Ccode is 00H, it indicates that there is no execution code to be UNDO, and the process exits this routine. If Ccode is not 00H, the value of Padd0 is substituted for the write pointer Padd (SP6).
[0051]
For example, when the UNDO key 122 is pressed while the ring buffer is in the state shown in FIG. 3, the execution code 01H is read from the ring buffer. The UNDO execution code 02H corresponding to this execution code is selected from the table of FIG. 8 and sent to the KEY / knob execution routine. In this routine, since the same processing as when the voltage axis change knob 118 is turned to the left from the execution code 02H is performed, the voltage range is reduced by one step.
[0052]
Further, when the UNDO key 122 is pressed, the execution code 05H is read from the ring buffer. The UNDO execution code 06H corresponding to this execution code is selected from the table of FIG. 8 and sent to the KEY / knob execution routine. In this routine, since the same processing as when the time axis change knob 117 is turned to the left from the code 06H is performed, the time per one division of the time axis is reduced by one step. This state is a state before the time axis change knob 117 is turned to the right and the voltage axis change knob 118 is turned to the right after the 1CH key 113 is pressed.
[0053]
In this state, since there is no previous key and knob operation, if the UNDO key 122 is further pressed, it must be ignored or a warning display or the like must be issued.
Therefore, in this embodiment, when the UNDO key 122 is further pressed, 00H is read from the ring buffer as an execution code, and 00H is extracted from the table in FIG. 8 and sent to the KEY / knob execution routine. Since the execution code 00H is an UNDO prohibition display process, a process for ignoring or displaying a warning or the like in the key / knob execution routine is coded.
[0054]
When the REDO key 123 is pressed, the execution code set in the setting state before the UNDO key 122 is pressed in the routine shown in FIG. 4C and FIG. 7 is read from the ring buffer, and the KEY / knob execution routine is executed. send. As a result, the same processing as when an execution code is written by a key or a knob is performed, and the state before the UNDO key 122 is pressed is returned.
[0055]
The processing flow of the routine indicated by C in FIG. 4 will be described with reference to the flowchart in FIG.
From the address indicated by Padd0, the execution code Ccode for the setting change process, which is the setting state before performing UNDO, is read (SP1), and 1 is added to the write pointer Padd (SP2). Thereafter, it is determined whether or not Padd0 exceeds FFH (SP3), and if it does, it is set to 00H (SP4). As a result, the write address is corrected so as to have a ring shape. The write pointer Padd finally obtained in this manner becomes the address where the execution code is written next or the address where the execution code is read when redo is performed again.
[0056]
When the REDO key 123 is pressed after the UNDO key 122 is pressed twice, the execution code 01H is read from the ring buffer and sent to the KEY / knob execution routine. In this routine, since the same processing as when the voltage axis change knob 118 is turned to the right from the code 01H is performed, the voltage range is increased by one step. Further, when the REDO key 123 is pressed, the execution code 05H is read from the ring buffer and sent to the KEY / knob execution routine. In this routine, since the same processing as when the time axis change knob 117 is turned clockwise from the code 05H is performed, the time per one division of the time axis increases by one step.
[0057]
This state is a state before the REDO key 123 is pressed twice, that is, first, the time axis change knob 118 is turned to the right, the 1CH key 113 is further pressed, and then the voltage axis change knob 118 is turned to the right. The setting is returned to the setting when turning.
[0058]
In this state, there is no further key and knob operation, so if the REDO key 123 is further pressed, it is necessary to ignore it or display a warning display or the like.
Therefore, in the present embodiment, when the REDO key 123 is further pressed, the execution code FFH is read out from the ring buffer as the execution code, the execution code FFH at the time of REDO is extracted from the table of FIG. 8, and sent to the key / knob execution routine. Since this execution code is a REDO prohibition display process, a process for ignoring or displaying a warning or the like in the key / knob execution routine is coded.
To keep.
[0059]
In the UNDO / REDO function described above, there is an operation that is not preferable if executed in UNDO and REDO. For example, there are systematic setting operations such as printing, paper feed, media format, and communication in a digital oscilloscope with a built-in printer. Regarding these operation processes, when executing these processes, an execution determination operation by an operator such as an ENTER key may be added, and the execution of UNDO and REDO may be ignored for these operations.
[0060]
The effect of the device configured as described above will be described for the case where a waveform of 50 Hz with a constant amplitude having a rise of about 100 ns and a fall of about 10 ms, similar to the operation explanation example of the conventional example, is observed.
[0061]
The operator can reset desired measurement conditions only by repeatedly pressing only the UNDO key 122 until a rising waveform of about 100 ns is observed. Here, even if waveform printing is being performed on the printer while the settings are being restored, the ENTER key required for printing is ignored during UNDO, so the printing menu is displayed but the printing operation is performed. There is no. If the UNDO key 122 is repeatedly pressed too much, pressing the REDO key 123 can correct the excessive return of the setting change.
[0062]
In the embodiment shown in FIG. 1, pressing the UNDO key 122 allows the user to return to the previous state of the key and knob operations, and pressing the REDO key 123 allows the setting returned by the UNDO key 122 to be advanced again. However, when the number of return steps or advance steps by the UNDO key 122 is large, the same key must be repeatedly pressed many times, which is a troublesome operation for the operator.
[0063]
FIG. 9 shows a configuration example for solving this problem. The same reference numerals are given to the portions common to FIG. 1, and the description of the overlapping portions will be omitted.
The difference between FIG. 9 and FIG. 1 is that FIG. 9 is provided with a switching key 124 for switching the function so that the UP / DOWN knob 119 is selectively operated as an undo (UNDO) or redo (REDO) key. That is.
[0064]
Every time the switch key 124 is pressed, the operation mode of the UP / DOWN knob 119 is alternately switched between the function of the UP / DOWN knob and the function as the UNDO / REDO key. In the UNDO / REDO key function mode, for example, when turned to the left, it operates as an UNDO key, and when turned to the right, it operates as a REDO key. Here, the changing speed may be changed according to the magnitude of the rotation of the knob 119.
[0065]
As a result, the operability is further improved as compared with the case where the key is repeatedly pressed, and the number of keys can be reduced by one.
[0066]
If a light-emitting switch is used as the setting key 124 to emit light in the UNDO / REDO key function mode, the operation mode of the knob 119 can be easily identified. A light-emitting display element may be provided at or near the knob 119 so that the operation mode can be identified by the lighting state.
[0067]
In each of the above embodiments, examples of measurement conditions in a digital oscilloscope, which is an electronic measuring instrument, have been described. However, the present invention can also be applied to resetting of use conditions in various electronic devices such as home appliances and industrial devices. is there.
[0068]
【The invention's effect】
As described above, according to the present invention, it is possible to provide an electronic device with excellent operability that can reset measurement conditions and settings that have been once set by a simple key operation using a small-capacity memory. It is suitable for various electronic devices such as measuring instruments, home appliances, and industrial equipment.
[Brief description of the drawings]
FIG. 1 is a configuration block diagram illustrating an example of an embodiment of the present invention.
FIG. 2 is an explanatory diagram of an initial state of a ring buffer memory used as an operation history memory.
FIG. 3 is an explanatory diagram of a state of a ring buffer memory when an operation target is operated.
FIG. 4 is a flowchart illustrating a flow of processing when an operation target is operated.
FIG. 5 is a flowchart showing a processing flow of a routine A in FIG. 4;
FIG. 6 is a flowchart showing a processing flow of a routine B of FIG. 4;
FIG. 7 is a flowchart showing a processing flow of a routine C of FIG. 4;
FIG. 8 is a list of correspondence between a change in setting of a digital oscilloscope corresponding to a type of processing executed by an operation of an operation target and a code for recognizing the change.
FIG. 9 is a configuration block diagram showing another example of the embodiment of the present invention.
FIG. 10 is a configuration block diagram of a digital oscilloscope shown as an example of an electronic apparatus.
FIG. 11 is an explanatory diagram showing a part of a menu configuration assigned to a key operation unit of the operation panel unit in FIG. 10;
[Explanation of symbols]
101 CPU
102 Analog / ADC unit 103 Acquisition (ACQ) unit 104 Display unit 105 Memory 106 External storage unit 107 Interface (I / F) unit 108 to 119 Key operation unit 120 Enter key 121 Reset key 122 Undo (UNDO) key 123 Redo (REDO) ) Key 124 switching key

Claims (7)

An electronic device configured to execute a desired process by operating a predetermined operation target corresponding to a processing purpose and inputting an operation condition to the arithmetic control unit,
An operation history memory that stores the type of processing executed by the operation of the operation target in chronological order;
A readout direction instructing unit that instructs to read out the process type data stored in the operation history memory in a desired time-series direction;
An electronic device comprising: 2. The electronic device according to claim 1, wherein the read direction instruction unit is an undo key and a redo key. 2. The electronic device according to claim 1, wherein the reading direction instruction unit is a knob that can rotate in forward and reverse directions. 4. The electronic device according to claim 3, wherein the read speed changes according to the rotation of the knob. 5. The electronic apparatus according to claim 3, wherein a read direction indicating section function and another control function are assigned to one knob, and these functions are alternately switched by a switch. The electronic device according to any one of claims 1 to 5, wherein the electronic device is a measuring device including a digital oscilloscope and a power meter. The electronic device according to claim 1, wherein the electronic device is one of a home appliance and an industrial device.

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