JPH03250233A - Control method for memory device - Google Patents

Abstract

PURPOSE:To select data to be loaded from the first memory to the second memory for the unit of a prescribed data area corresponding to the kind of the data by varying key operations corresponding to the degree of importance for the data. CONSTITUTION:Only the contents of a prescribed part in a second memory 2 are replaced based on the contents of a first memory 1 by the first key operation. By the second key operation mode complicated that the first key operation, the contents excepting for the prescribed part in the second memory 2 at least are replaced based on the contents of the first memory 1. Namely, the important data not to be changed unless there is any special cause after being once set can be replaced only by the second key operation rather than the first key operation. Thus, it is not necessary to load the default data of a ROM to the other memory each time a power source is turned on to a set, and the data to be loaded to the memory can be selected for the unit of the prescribed data area corresponding to the degree of importance and the kind of the data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of controlling a memory device, and particularly to a method of controlling a memory device suitable for a memory device including a nonvolatile memory.

[Summary of the invention]

The present invention provides a method for controlling a memory device in which a first key operation replaces only the contents of a predetermined portion of a second memory based on the contents of the first memory, and the first key operation is more complicated than the first key operation. By operating the second key, the contents of the second memory other than at least a predetermined portion are replaced based on the contents of the first memory. The data to be loaded into the second memory can be selected in units of predetermined data areas, and important data stored in the second memory can be prevented from being erroneously rewritten.

[Conventional technology]

When the power of the device is turned off, a non-volatile memory (Non-V
There is a memory device provided with an olatile memory.

A conventional example of such a memory device is shown in FIG.

This memory device includes a ROM 21, a nonvolatile memory 22,
It mainly consists of a RAM 23, various controllers (not shown), and the like. When the device is powered on, the non-rewritable default data stored in the ROM 21 is
The data was supplied to the nonvolatile memory 22 and the RAM 23 all at once, and written into the nonvolatile memory 22 and the RAM 23.

[Problem to be solved by the invention]

By the way, in a set equipped with the above-mentioned memory device, there are various kinds of data stored in the memory. For example, as set-specific adjustment data, − degrees,
After changing the default data and setting new data, unless there is something special, you want to use the set data as is without changing it, or temporarily only when necessary such as during repair or manufacturing. There are some cases where the data must be changed and then returned to the default data.

However, conventionally, each time the set is powered on, the RO
All default data stored in M21 was transferred to non-volatile memory 22 and RAM 23.
Improvement was desired.

Therefore, an object of the present invention is to provide a control method for a memory device that can specify data replacement between memories depending on the importance and type of data.

[Means for Solving the Problems] The present invention provides a method for storing data stored in a memory device comprising a first memory for storing standard data, a second nonvolatile memory, and a third memory for working. In a method for controlling a memory device that controls transfer of data, a first key operation replaces only the contents of a predetermined portion of a second memory based on the contents of the first memory, and the method is more complicated than the first key operation. The second
The configuration is such that the contents of the second memory other than at least a predetermined portion are replaced based on the contents of the first memory by key operation.

[Effect]

By operating the first key, only the contents of a predetermined portion of the second memory are replaced based on the contents of the first memory. Furthermore, a second key operation that is more complex than the first key operation replaces at least the contents of the second memory other than the predetermined portion based on the contents of the first memory. That is, important data, which is not desired to be changed unless there is a special occasion, can be replaced only by the second key operation, which is more complicated than the first key operation.

Therefore, unlike conventional methods, each time the set is powered on, R
It is no longer necessary to load the default data of OM into other memory, and the data to be loaded into memory can be
It can be selected in units of predetermined data areas depending on the type.

Furthermore, if the user wishes to change important data, he or she must consciously perform a complicated second key operation, thereby preventing important data from being replaced by mistake.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

FIG. 1 shows a block diagram of the main parts of a memory device applicable to the present invention.

In the configuration of FIG. 1, the memory device includes a ROMI as a first memory, a non-volatile memory (Non-Volatile Memory) 2 as a second memory,
It mainly consists of a RAM 3 as a third working memory, and various controllers (not shown) are also provided.

Each of the above-mentioned ROMI, non-volatile memory 2, and RAM 3 has a set-specific data area Al? 11, AR12, AR
13 and jig/test data areas AR21, AR2
2, AR23.

The above-mentioned set-specific data areas ARII, AR12, A
I? 13 is an area for storing data that is not desired to be changed unless there is a special occasion, such as data such as the positional relationship between the pulse generator and the magnetic head;
In addition, the jig/test data areas AR21, AR22,
The AR 23 is an area for temporarily changing the mode and storing data to be used during manufacturing or repair.

Jig/test data area AR21, AR22, AR2
Data No. 3 is set by loading default data from the ROMI into the nonvolatile memory 2 each time a work is performed. In addition, AR33 is a data area in RAM3, and is the above-mentioned data area AI? 13, a data area other than AR23.

Between ROMI and non-volatile memory 2, between non-volatile memory 2 and R
A bus for data transfer is provided between AM3.

Further, a controller (not shown) for controlling reading and writing of the ROMI, non-volatile memory 2, and RAM 3 is connected to the ROMI, non-volatile memory 2, and RAM 3, and this controller includes mode selection and memory control. A key switch is connected for data loading, data input, etc.

An example of the key switch 4 is shown in FIG.

This key switch 4 is a power saving type, and the mode key 4
By the combination of 1 and each key shown below, power on/off, setting mode selection history, data loading to memory, etc. are performed.

Adjustment key 42 is a key for selecting adjustment mode, RFC key 4
3 is a key for selecting a recording mode. Further, the REW key 44 is a key for selecting a rewind mode, and the FF key 45 is a key for selecting a fast forward mode.

The 5TOP key 46 is a key for stopping the operation of the set.

11fl is turned on by pressing the REC key 43 or the REW key 44, and the power is turned off by pressing the 5TOP key 46.

When the set is powered on and the operator selects an adjustment mode by operating the key switch 4 to perform adjustment work, an adjustment work mode signal is supplied to the controller.

Under the control of the controller, from ROMI to non-volatile memory 2, RAM 3, or from non-volatile memory 2 to RAM
Data is supplied to 3. This selection of data transfer is performed by operating the key switch 4, as will be described later. R.O.
When data is transferred from the MI to the nonvolatile memory 2 and RAM3, the non-rewritable default data stored in the data area ARII of the ROMI is supplied to the corresponding data area AR12 of the nonvolatile memory 20 and becomes nonvolatile. is stored in the memory 2 as well as in the non-volatile memory 2.
The data is further supplied to the RAM3 via the RAM3, and stored in the corresponding data area AR13. Furthermore, when data is transferred from the nonvolatile memory 2 to the RAM 3, the data stored in the data area AR12 of the nonvolatile memory 2 is
M3 is supplied to the corresponding data area AR13, and the RAM
3.

Due to adjustment work, set-specific data area A of RAM3
When the data in R13 is rewritten and the power is turned off upon completion of the adjustment work, the data in the data area AR13 of the RAM 3 is transferred to the data area A of the non-volatile memory 2.
It is transferred to R12 and becomes standard data. Along with this, R
The data in the data area AR23 of AM3 is transferred to the data area AR22 of the nonvolatile memory 2.

After this, the data in the data area AR12 of the nonvolatile memory 2 is transferred to the data area AR1 of the RAM 3 as needed.
Move to step 3 and use.

On the other hand, when the set is powered on, when the operator operates the key switch 4 to select a repair mode in order to perform repair work, a repair work mode signal is supplied to the controller.

Under the control of the controller, each data area A of ROMI
The non-rewritable default data stored in R21 is stored in the corresponding data area AR2 of the non-volatile memory 2.
2 and stored in the nonvolatile memory 2,
It is further supplied to the RAM 3 via the non-volatile memory 2,
It is stored in the corresponding data area AR23. This data transfer is performed by operating the key switch 4, as will be described later.

Due to repair work, jig/test data area of RAM3 @
The data in AR23 is rewritten. When the power is turned off upon completion of the work, the data in the data area AR23 of RAM3 is transferred to the data area AR22 of the non-volatile memo 'J2, and this transferred data is saved.
The data in the data area AR23 of the RAM3 is erased.

The data in this data area AR22 becomes unnecessary once the work is completed, so the next time it is needed, it can be stored in the ROM again.
The default data stored in the data area AR21 of I is stored in the corresponding data areas AR22 and AR23 of the nonvolatile memory 2 and RAM 3.

By the way, as mentioned above, when the work is completed and the power of the set is turned off, the data area AR13 of RAM3 is
, AR23 are transferred to the corresponding data areas AR12 and AR22 of the nonvolatile memory 2. From this RAM 3 to the data area AR of the nonvolatile memory 2
12. The data transferred to the AR 22 includes data that should be saved and data that does not need to be saved.

For example, due to adjustment work, within the data area AR13,
The data supplied from the ROMI is changed and the newly set data is data that does not want to be changed unless there is a special occasion, and it is necessary to save the data set by the above-mentioned adjustment work as is. An example of such data is the positional relationship between the magnetic head and the magnetic head.

On the other hand, in repair work, the default data of ROMI can be loaded and used in the non-volatile memory 2 and RAM3 as needed.
There is no need to store the data rewritten on 23 in nonvolatile memory 2.

Therefore, depending on whether or not it is necessary to save the data set by the work, set the priority,
This priority corresponds to the complexity of key operations.

In other words, in the case of data in the cent-specific data area AR12 that needs to be saved in the non-volatile memory 2, a high priority is set and the data is transferred to the RO.
Complicates key operations when replacing with MI default data.

For example, non-volatile memory 2 set by adjustment work.
0 set specific data SM Castle A R12 data R
When replacing data with data from the OMI data area ARII, unlike normal operations, the ROMI data area is replaced only when three keys, the mode key 41, adjustment key 42, and REC key 43 or REW key 44, are pressed. A
) ill to data area AR12 of nonvolatile memory 2
, default data is transferred to the data area AR13 of RAM3.

On the other hand, if the data set by the work does not need to be saved in the nonvolatile memory 2 in the jig/test data area AR22, the priority is set low and the data is stored in the ROMI default setting. To simplify key operations when replacing data.

For example, in the case of repair work, the mode key 41 and the RE
By pressing two keys, the C key 43 or the REV key 44, the data area AI? of the ROM1 as described above is changed.
21, default data is transferred to the data area AR22 of the nonvolatile memory 2 and the data area AR23 of the RAM 3.

In this way, the key operations are different depending on the type and importance of the data, so every time you turn on the power to the set,
It is no longer necessary to load ROMI default data into non-volatile memory 2 and RAM 3 as in the past, and R
Data to be loaded from OMI to RAM 3 can be selected in predetermined data increments.

In addition, in the case of high-priority and important data,
Since the key operations are complicated and the key operations are simple when the priority is low, it is possible to prevent data from being erroneously rewritten.

In addition, in this embodiment, when loading data into the set-specific data areas AR12 and AR13 of the nonvolatile memory 2 and RAM3, the jig/test data area AR
22, an example is described in which the data is transferred separately from the data transfer to the AR23, but the present invention is not limited to this. For example, when loading data to the cent-specific data area ARi2AR13, the jig/test data area AR22
, and data may be loaded to the AR 23 together.

Further, in this embodiment, when the power is turned off, data set in the RAM 3 is transferred to the nonvolatile memory 2, but this is not limited to this (for example, , a button for saving data may be provided, and by operating this button, data set on the RAM 3 may be transferred to the nonvolatile memory 2.

In this embodiment, the data area is classified into two, set-specific data areas AR12 and AR13, and jig/test data areas AR22 and AR23, but the number of classifications can be changed as needed. It is configurable.

〔Effect of the invention〕

According to the second invention, the key operations are different depending on the importance of the data, so when the power is turned on, the data to be loaded from the first memory to the second memory is changed depending on the type of data. This has the advantage that it can be selected in units of predetermined data areas.

Furthermore, since the key operations are made more complex in accordance with the importance of the data, it is possible to prevent important data from being erroneously rewritten.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a memory device applicable to the present invention, FIG. 2 is a diagram showing an example of a key switch, and FIG. 3 is a diagram for explaining a conventional example. Explanation of main symbols in the drawings 1.21: ROM, 2.22: Nonvolatile memory 3.
23: RAM, 4i: Mode key 42: Adjustment key
43: REC key 44: REW key ARII, AR12, AR13: Set-specific data area, AR21, AR22, AR23: Jig/test data area. -°Kien Iku 1 Figure 1 AR Nikis 2 1 Submarine row Figure 3

Claims (1)

[Scope of Claims] A memory device that controls data transfer within a memory device that includes a first memory for storing standard data, a nonvolatile second memory, and a third memory for working. In the control method, a first key operation replaces only the contents of a predetermined portion of the second memory based on the contents of the first memory, and a second key operation that is more complicated than the first key operation is performed. The content of the second memory other than at least the predetermined portion is read by key operation.
A method for controlling a memory device, characterized in that replacement is performed based on the contents of the first memory.