JP3134285B2 - Non-volatile memory capacity confirmation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device having a nonvolatile memory for storing initial setting data and various data of the device, and more particularly, to a memory capacity of the mounted nonvolatile memory, The present invention relates to a non-volatile memory capacity checking device for checking whether the memory capacity is suitable for the device.

[0002]

2. Description of the Related Art Various electronic devices such as a television receiver, a video tape recorder, and a facsimile device are initialized at the time of shipment from a factory or the like, and the initial setting data is stored in the device. It is stored in a non-volatile memory. Conventionally, the non-volatile memory for storing the initial setting data is 1 k
Bit memory capacity was used. That is,
Since only one type of non-volatile memory has a memory capacity of 1 kbit, for example, when manufacturing in a factory, a situation where a non-volatile memory having a memory capacity different from the determined memory capacity is erroneously mounted on a device is not considered. Could not occur.

However, electronic devices have recently become multifunctional, and data to be initialized has been increasing. Therefore, for example, even for the same television receiver, if the models are different, the functions and performances are greatly different, and the amount of data to be initially set is also significantly different. In other words, in a so-called high-end model equipped with many functions, the memory capacity of the nonvolatile memory is not enough to be 1 kbit, and is 2 kbit.
(Or more) with a large memory capacity.

That is, depending on the type of electronic device, the type (memory capacity) of the nonvolatile memory to be mounted is 1 kbi.
t type and 2 kbit type (or more)
Therefore, it is necessary to mount a nonvolatile memory having a memory capacity suitable for a model. Therefore, a situation in which the type of the non-volatile memory is erroneously mounted on the device, which has not occurred in the past, may possibly occur in a recent manufacturing factory.

In this case, for example, if a 2 kbit nonvolatile memory is erroneously mounted on a device in which a 1 kbit nonvolatile memory is to be mounted, there is no particular problem in terms of function, but a 2 kbit nonvolatile memory can be used. If a 1-kbit nonvolatile memory is erroneously mounted on a device in which is to be mounted, overwriting is performed at the time of writing the initial setting data, so that a normal initial setting cannot be performed. Such a situation is a problem that is particularly likely to occur when a product incorporating a microcomputer and a non-volatile memory integrally is mounted on a device, and when one microcomputer supports devices of a plurality of models.

Therefore, in recent manufacturing plants, in order to prevent such a mounting error of the nonvolatile memory, usually, the memory capacity is visually checked at the board stage.
In addition, when a problem occurs after being incorporated as a product, a method is adopted in which the cabinet of the device is opened and the memory capacity of the mounted nonvolatile memory is visually checked again.

[0007]

Such a visual check of the capacity of a non-volatile memory is extremely lossy in a production line where products flow at regular time intervals.
Further, there is a problem that the operation is troublesome. Also,
There is also a problem that it may be difficult to confirm depending on the mounting position of the nonvolatile memory on the substrate. further,
If a problem occurs after the product has been assembled, it is troublesome because the user cannot open the cabinet of the device to check it visually.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. The purpose of the present invention is to determine whether the memory capacity of a mounted non-volatile memory at the stage of a manufacturing process is a memory capacity suitable for the device. It is an object of the present invention to provide an apparatus for confirming the capacity of a non-volatile memory which can easily confirm whether or not the capacity of the nonvolatile memory is high.

[0009]

In order to solve the above-mentioned problems, a device for confirming the capacity of a nonvolatile memory according to the present invention comprises:
At the stage of the manufacturing process,
Whether the memory capacity is appropriate for the device
A non-volatile memory capacity checking device for checking whether
A nonvolatile memory for storing initial setting data and various data, and a control circuit for controlling the device, and a display unit, before
A key with a confirmation mode key on the confirmation terminal of the control circuit.
Becomes a capacity confirmation mode of the non-volatile memory by over operating unit is connected, the control circuit writes the data X indicating the memory capacity of the nonvolatile memory to the first address of the nonvolatile memory, any higher Address
Data indicating the memory capacity of the nonvolatile memory
Y is written, and thereafter, the data X written at the head address of the nonvolatile memory is read, and whether or not the read data X has been rewritten to the data Y is determined.
Thus, the memory capacity of the nonvolatile memory is confirmed, and the confirmation result is displayed on the display unit.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an electrical configuration of a device equipped with a nonvolatile memory capacity checking device according to the present invention. The device includes a nonvolatile memory 1 for storing initial setting data and various data, a control circuit 2 including a microcomputer for controlling the device, and a display unit 3.
The control circuit 2 outputs a control signal to the control system 4 of each section of the device via the bus 5.

The control system 4 includes, for example, a television signal receiving circuit, an audio circuit, a color signal reproducing circuit, a synchronizing circuit, a deflection circuit and the like when the device is a television receiver. In the case of a television receiver,
The display unit 3 can also serve as a display screen of a CRT or the like, and it is not necessary to newly provide a display unit. Further, the control circuit 2 is provided with a confirmation terminal 22 used for confirming the memory capacity of the nonvolatile memory 1. The confirmation terminal 22 is provided with a key operation unit 6 having a confirmation mode key. It is to be connected.

When the key operation unit 6 is connected to the confirmation terminal 22, the control circuit 2 determines that the operation mode is the capacity confirmation mode for confirming the memory capacity of the nonvolatile memory 1. When a key operation signal is received, the capacity confirmation mode of the mounted nonvolatile memory 1 is executed.

Next, the operation of the non-volatile memory capacity checking device having the above configuration will be described with reference to the flowchart shown in FIG. For example, in a television receiver, in the stage of the manufacturing process, initial settings suitable for the model are performed, and the initial setting data is stored in the non-volatile memory 1 mounted on the device. Therefore, in the preceding process, a capacity confirmation process for confirming the memory capacity of the mounted nonvolatile memory 1 is executed.

That is, in the capacity confirmation step, the terminal of the key operation section 6 is connected to the confirmation terminal 22 of the conveyed product from the outside. As a result, the control circuit 2 determines that the mode is the capacity check mode for checking the memory capacity of the nonvolatile memory 1 (step S1). Therefore, the control circuit 2
Receives the operation signal of the confirmation mode key from the key operation unit 6 (step S2), and writes the data X to the head address “000h” of the mounted nonvolatile memory 1 (step S3). As a result, the data X is written to the head address “000h” of the nonvolatile memory 1.

Next, the control circuit 2 writes the data Y to the address "400h" of the nonvolatile memory 1 (step S4). In this case, the head address “000h” represented by a hexadecimal number is represented by “0000 0000 00” in a binary number.
00 ", and the address" 400h "is" 0100 0 ".
000 0000 ". Here, the terminals of the 1 kbit nonvolatile memory 1 are ten terminals A0 to A9,
The terminals of the k-bit nonvolatile memory 1 are A0 to A10 1
Since there is one terminal, in the 1-kbit nonvolatile memory 1, even if the address "400h" is specified, "1" given to the A10 terminal is not determined.

That is, the 1 kbit nonvolatile memory 1
In this case, even if the address "400h" is specified, it is the same as specifying the start address "000h". As a result, the given data Y is written to the start address "000h". That is, the data X written to the head address “000h” in step S3
Is rewritten to data Y.

On the other hand, in the 2-kbit nonvolatile memory 1, data Y is written to the address "400h" as specified. That is, at the stage of processing step S4, if the mounted nonvolatile memory 1 is 1 kbit, the data Y is written to the address “000h”, and if the mounted nonvolatile memory 1 is 2 kbit, , The data X is written to the address “000h” and the data Y is written to the address “400h”.

Thereafter, the control circuit 2 controls the nonvolatile memory 1
Is read (step S5), and it is determined whether or not the read data is "X". If the read data is not "X", it is determined that the memory capacity of the mounted nonvolatile memory 1 is 1 kbit (step S11), and the display unit 3 indicates that the memory capacity is 1 kbit. Display is performed (step S10). For example, a numerical value “1” is displayed on the image receiving screen to notify the adjuster of the memory capacity.

On the other hand, if the read data is "X" at step S6, then the data written at address "400h" of the nonvolatile memory 1 is read (step S7). It is determined whether the data is "Y" (step S8). If the read data is "Y", it is determined that the memory capacity of the mounted nonvolatile memory 1 is 2 kbit (step S9), and the display unit 3 indicates that the memory capacity is 2 kbit. Is displayed (step S1).
0). For example, the adjuster is notified of the memory capacity by displaying a numerical value “2” on the image receiving screen or the like.

If the read data is not "Y" in the determination at step S8, it is determined that the memory capacity of the mounted nonvolatile memory 1 is 1 kbit (step S11), and the display unit 3 has memory capacity of 1
A display indicating kbit is performed (step S10). The coordinator visually checks the numerical value displayed on the image receiving screen and determines whether or not the mounted nonvolatile memory 1 is appropriate. That is, there is no need for an extremely lossy and cumbersome operation of opening the cabinet behind the device and visually checking the size of the IC.

In the above embodiment, the case where the capacity checking device of the present invention is mounted on the television receiver has been described. Therefore, the display unit 3 is configured to be also used as a display screen such as a CRT. When the capacity confirmation device of the present invention is mounted on a device having no such display screen, the display unit 3 needs to be provided separately.

In this case, the display unit 3 determines whether the memory capacity of the nonvolatile memory 1 is at least 1 kbit or 2 kbit.
Since it is only necessary to be able to confirm whether the bit is a bit, from this point, it is possible to configure with one LED or the like. That is, in the capacity confirmation mode, if the memory capacity of the nonvolatile memory 1 is 1 kbit, the LED
Can be turned on, and when it is 2 kbits, the LED is not turned on. However, if the light is not turned on, the adjuster may misunderstand that the operation is malfunctioning.
D may be blinked.

In the above embodiment, the type of the non-volatile memory 1 is set to one having a memory capacity of 1 kbit,
Although two types of bits are described, the number of bits is not limited to this.
A combination of 4 bits, 4 kbits, and 8 kbits may be used. Also, the type is not limited to two types, for example, 1 kbit, 2 kbi
t, 4 kbit, 3 types, 1 kbit, 2 kbit, 4
It is possible to configure so as to confirm a plurality of types of capacity such as four types of kbit and 8 kbit. In this case, when the display unit 3 is configured by LEDs or the like, the number of LEDs or the like corresponding to the type is prepared. For example, 1 LED is lit for 1 kbit, 2 LEDs for 2 kbits, and 3 LEDs for 4 kbits. What should I do?

Further, in the above embodiment, the data to be written to the head address of the nonvolatile memory 1 is 1 kbit.
Is described as "X" and the case of 2 kbits is described as "Y", but the data to be written is not limited to these. In addition, the read / write addresses are also set in the 1 kbit and 2 kbit nonvolatile memories 1 in the start address “000h” and the address “400
h), the address is not limited to this, and the start address “000h” is “000h”.
Any value as long as it is in the range of "3FFh" to "3FFh". At this time, the address "400h" may be an address obtained by adding 400h to the address determined in the range of "000h to 3FFh". For example, in the case of the non-volatile memory 1 of 1 kbit and 4 kbit, an address in the range of “000h to 3FFh” and an address obtained by adding 800h or C00h to the address may be used. Furthermore, in the above embodiment, the case where the capacity of the nonvolatile memory is confirmed at the stage of the manufacturing process is described. For example, in response to a request for repair or the like from a user, the serviceman 1
In the case where the memory capacity is exchanged, it is possible to confirm whether or not the memory capacity of the nonvolatile memory 1 is appropriate by using the capacity confirmation apparatus of the present invention.

[0025]

According to the present invention, there is provided an apparatus for checking the capacity of a nonvolatile memory, comprising: a nonvolatile memory for storing initial setting data and various data; a control circuit for controlling devices; and a display unit . The confirmation terminal has a confirmation mode key.
When the non-volatile memory capacity confirmation mode is entered by connecting the obtained key operation unit , the control circuit writes data X indicating the memory capacity of the non-volatile memory at the head address of the non-volatile memory, and sets an arbitrary upper address.
Is another data Y indicating the memory capacity of the nonvolatile memory.
And then reads the data X written at the start address of the nonvolatile memory, and checks the memory capacity of the nonvolatile memory by checking whether the read data X has been rewritten to the data Y. Then, since the confirmation result is displayed on the display unit, an extremely lossy and cumbersome operation of opening the cabinet behind the device and visually confirming the IC size as in the related art is eliminated. In addition to this, it is possible to easily and reliably confirm whether or not the memory capacity of the mounted nonvolatile memory is suitable for the device.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an electrical configuration of a device equipped with a nonvolatile memory capacity checking device according to the present invention.

FIG. 2 is a flowchart for explaining the operation of the device for checking the capacity of a nonvolatile memory according to the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Non-volatile memory 2 Control circuit (microcomputer) 3 Display part 4 Control system 6 Key operation part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G06F 12/16 G06F 12/06

Claims (1)

(57) [Claims] At a stage of a manufacturing process, a mounted
The memory capacity of the volatile memory is appropriate for the device.
Check the capacity of the non-volatile memory to check whether it is the capacity
An apparatus, a nonvolatile memory for storing data of the initial setting data and various, and a control circuit for controlling the device, and a display unit, the confirmation terminal of the control circuit, acknowledged mode
Becomes a capacity confirmation mode of the non-volatile memory by the key operation unit having a key is coupled, wherein the control circuit,
It writes the data X indicating the memory capacity of the nonvolatile memory to the first address of the nonvolatile memory, Ren
The memory capacity of the nonvolatile memory
Then, another data Y is written, and thereafter, the data X written at the head address of the nonvolatile memory is read, and the read data X is rewritten to the data Y.
A memory capacity of the non-volatile memory according to whether or not the check is performed, and a result of the check being displayed on the display unit.