JPH0519886A - Electronic equipment - Google Patents

Abstract

PURPOSE:To obtain the electronic equipment which can be used only by a specific person. CONSTITUTION:The electronic equipment consists of a key switch group 1, a keyboard controller 2, a key switch 4 where a key 5 can be inserted and extracted, a memory 6 which is backed up by a battery 7 so as to store an ID code, a CPU 3 which controls the electronic equipment, an ID check mode setting switch 10, an ID setting mode lamp 8 for displaying the state of the electronic equipment, and an ID check mode lamp 9. Consequently, the keyboard controller 2 makes an ID check, so the CPU 3 is not loaded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device, and more particularly to a function for limiting its user.

[0002]

2. Description of the Related Art As an example of conventional general electronic equipment, there is an embodiment shown in FIG. 3 in the computer field.
FIG. 3 shows an electronic device having a function for limiting the user. In the figure, 1 is a key switch group for inputting an ID code, and 2 is a key pressed by the key switch group 1. However, a keyboard controller 3 for generating a code corresponding thereto, 3 is a CPU for receiving and storing the key code sent from the keyboard controller 2, and 11 is a CPU interface circuit for exchanging data between the keyboard controller 2 and the CPU 3. .

Next, the operation will be described. Since the operator asks for permission to use the system at the beginning of use, when keys are pressed in a certain order from the key switch group 1, codes corresponding to these keys are sequentially generated by the keyboard controller 2, and this is an CP code as an ID code.
It is sent to U3. The CPU 3 compares the ID code requested by the user program currently running with the ID code input by the operator, and if the ID codes match, permits the subsequent normal use, but if they do not match, this ID check is performed until the correct ID code is input. Stay in the state.

[0004]

Since the conventional electronic equipment is constructed as described above, once the ID code becomes known to anyone other than the limited user, anyone can easily use it. In addition, although the ID code will be reset here, generally the procedure is often difficult, and if the procedure is made easy, anyone can change it.
There was a problem that the original limited-use function faded. Moreover, since the ID code is checked by the CPU, the load on the CPU is increased, and there is a problem that the system is used less efficiently.

The present invention has been made to solve the above problems, and an object thereof is to provide an electronic device which can easily check an ID code without imposing a load on the CPU. Also, the ID can be used without bothering the user's hand.
The purpose is to obtain an electronic device in which the code can be set.

[0006]

An electronic device according to a first aspect of the present invention is such that an ID check mode is added to a keyboard controller (an example of a controller) so that an ID code can be checked by the keyboard controller. , Has the following elements. (A) A key switch group for inputting a code, (b) a memory for storing an ID code, (c) a CPU for transmitting the code input by the key switch group and controlling the device, (d) the above key switch A controller having an ID check mode for checking the code input from the group based on the ID code stored in the memory and a transmission mode for transmitting the code input from the key switch group to the CPU.

According to the second aspect of the invention, the function of setting the ID code sent from the CPU is added, and has the following elements. (A) A group of key switches for inputting a code, (b) a memory for storing an ID code, (c) a program for controlling a device is operated, and the ID code is stored in the memory based on a command of the program. CP to let
U, (d) ID checking means for checking the code input from the key switch group based on the ID code stored in the memory.

[0008]

According to the electronic device of the first aspect of the present invention, the controller inputs the code input from the key switch group to the controller.
Since the ID check mode is added in addition to the conventional transfer mode for transmitting to the CPU, the CPU does not need to perform the check.

Further, according to the second aspect of the present invention, the ID code is determined by the user program, and this is sent from the CPU to the memory and stored therein, so that the user does not need to set the ID code.

[0010]

【Example】

Example 1. An embodiment of the first invention of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is a key switch group for inputting an ID code, 2 is this key switch group 1
A keyboard controller (an example of a controller) that identifies the key pressed by and generates a code corresponding to the key, 4 is a key switch that controls the mode of the keyboard controller 2, and 5 is a key switch that can be inserted into and removed from the key switch 4. A key for turning on / off the state, 6 a memory for temporarily storing the ID code sent from the keyboard controller 2, 7 a battery for holding the ID code in the memory 6 even when the power is turned off, and 8 setting an ID ID setting mode lamp for informing the operator that it is in the mode, 9 is an ID check mode lamp for informing the operator that it is in the mode for checking the ID, and 10 is for setting the mode switching from the transmission mode to the ID check mode. This is an ID check mode setting switch for.

Next, the operation will be described. Key 5 inserted in the key switch when the power of the electronic device is turned on
When is turned on now, this is sent to the keyboard controller 2 and recognized as the ID setting mode, and the ID setting mode lamp 8 is turned on to notify the operator of this state. At this time, when a key is pressed from the key switch group 1, the keyboard controller 2 creates a code string corresponding to the key string and stores it in the memory 6 as an ID code. Next, the key 5 is turned to be turned off, removed from the key switch 4, and stored by the system administrator. As a result, it is notified to the keyboard controller 2 that the key switch 4 is OFF, the ID setting mode is released, and I
The D setting mode lamp 8 is turned off to notify the operator that the ID setting mode has ended.

Here, even if the power supply is turned off once, the ID code stored in the memory 6 is backed up by the battery 7 and therefore does not disappear.

When the power is turned on again, since the key switch 4 is turned off, the ID check mode lamp 9 is turned on as an initial state to notify the operator that the ID check mode is set. Here, when the operator inputs the previously set ID code from the key switch group 1, the keyboard controller 2 converts this into a key code and compares it with the ID code stored in the memory 6, and if they do not match, this ID code To keep the ID check mode.

If they match, the ID check mode is released and the ID check mode lamp is turned off to notify the operator. After that, the normal transmission mode is set, the key pressed by the key switch group 1 is converted into a corresponding code by the keyboard controller 2, and then treated as normal keyboard data and transmitted to the CPU 3. Also,
During normal use, the operator may want to leave the seat as it is, but in that case, by pressing the ID check mode setting switch 10, the transmission mode shifts to the previous ID check mode. Never used.

As described above, in this embodiment, the switch group for inputting the ID code, the memory for storing the ID code set and input by the switch group, and the keyboard controller for controlling these are characterized. The electronic device to be described.

As described above, according to this embodiment, the ID code can be set only while the key switch is ON, and the ID can be easily checked when the key switch is OFF or when necessary. Therefore, the system administrator uses key 5
Management of the system provides a system that can be used only by a specific operator.

Although the ID check mode setting switch 10 is provided in order to enter the ID check mode in the above embodiment, the mode is switched to the ID check mode by simultaneously pressing a plurality of specific keys in the key switch group 1. Even if it does, the same effect as the above-mentioned embodiment is produced.

Example 2. Next, a second invention will be described based on the embodiment shown in FIG. In the figure, 3 is a CPU used in this electronic device, 11 is a CPU interface circuit for receiving an ID code sent from the CPU 3, and 12 is a CP.
It is a user program that operates in U3, and other parts are the same as in the first embodiment. Next, the operation will be described.
The ID code sent by the user program of the CPU 3 connected to the electronic device is sent to the CPU interface circuit 1
1, the keyboard controller 2 stores it in the memory 6.

For example, if the user program A is the CPU 3
The user program A has an ID code unique to the user program A when it is operated by
It is sent from the PU 3 to the keyboard controller 2 via the CPU interface circuit 11 and stored in the memory. The ID check mode is maintained unless the operator inputs the ID code unique to the user program A from the key switch group. Since each of the user programs B and C also has a unique ID, the user can be limited for each program. For example, a unique ID can be set depending on the types of programs such as a salary program, an accounting program, and a personnel program.

As described above, in this embodiment, the switch group for inputting the ID code, the memory for storing the ID code set and input by the switch group, and the CP of the electronic device are used.
The electronic device characterized by including a memory for receiving and storing the ID code sent from U and a keyboard controller for controlling these has been described.

As described above, according to this embodiment, since the ID code set by the user program is stored in the memory 6 from the CPU 3 through the CPU interface circuit 11, the user program can perform the initial setting of the ID code. Thus, it is possible to save the trouble of setting the ID code every time and set the ID code unique to the user program.

Note that the CPU 3 may be externally connected or may have an integral structure such as a laptop personal computer, and the same effect as that of the above-described embodiment can be obtained.

In the above embodiment, the case where the user program sets the ID code has been described, but a program other than the user program such as the system program and the OS program may set the ID code.

As a technique related to the present invention, there is a "key device" described in JP-A-2-15358. This key device is an original "key" invention, while the present invention relates to an electronic device having a key switch group such as a keyboard as an input means. That is, the above-mentioned "key device" has a major drawback in that the key device is required only for the purpose of handling the keyword (corresponding to the ID code), whereas the present invention has a function of handling the keyword (ID code) in the keyboard controller. The ID check can be realized compactly and inexpensively. Also, "key device" is a keyword (ID code)
However, the present invention is largely different in that the controller performs the check in order to reduce the load on the CPU in order to reduce the load on the CPU.

[0025]

As described above, according to the first aspect of the invention, since the controller checks the code input from the operator after setting the ID code in the memory, the system can be used only by a specific operator without imposing a load on the CPU. Can be built.

According to the second invention, the ID code is sent from the CPU and stored in the memory, so that the ID code can be initialized by the user program and the operator can set the ID code every time. It can be omitted and corresponds to the user program.
This has the effect of setting the D code.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an electronic device according to the first invention.

FIG. 2 is a block diagram showing an embodiment of an electronic device according to the second invention.

FIG. 3 is a block diagram showing an electronic device according to a conventional method.

[Explanation of symbols]

1 key switch group 2 keyboard controller 3 CPU 4 key switch 5 keys 6 memory 7 battery 8 ID setting mode lamp 9 ID check mode lamp 10 ID check mode setting switch 11 CPU interface circuit 12 User program

Claims (2)

[Claims] 1. An electronic device having the following elements: (a) a key switch group for inputting a code, (b) a memory for storing an ID code, (c) a code input by the key switch group is transmitted, and CPU for controlling the device, (d) ID for checking the code input from the above key switch group based on the ID code stored in the memory
A controller having a check mode and a transmission mode for transmitting a code input from the key switch group to the CPU. 2. An electronic device having the following elements: (a) a key switch group for inputting a code, (b) a memory for storing an ID code, (c) a program for controlling the device and operating the program. ID to the above memory based on
A CPU for storing a code, (d) ID checking means for checking the code input from the key switch group based on the ID code stored in the memory.