JPS63118917A - Electronics - Google Patents

Abstract

PURPOSE:To hold the security of a file and to improve the operability of an electronic equipment by permitting a specified person who knows a password code to access, by providing an accessing means which judges the code of the password code on the electronic equipment other than a keyboard input means. CONSTITUTION:By applying a power source a CPU5 is initialized. However, an input from a keyboard 6 cannot be accepted in this state, and the CPU5 cannot be operated even by any input from the keyboard 6. The fact is also informed to a control part 4 via a line l3. Next, when the password code is inputted to a key panel 1, the control part 4 accumulates it in a memory 2, and simultaneously, loads the password code registered already on a work area. The password code is compared with a registered password code, and when they coincide, the control part informs it to the CPU5, and a flag 5B is set based on the above information, and a state is set at an operation possible state which accepts the input from the keyboard 6.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to electronic equipment, particularly electronic equipment having keyboard input means such as personal computers and word processors.

[Conventional technology]

In general, this type of electronic equipment, such as a personal computer with a keyboard input means, is designed to prevent confidential information stored therein from being easily viewed by unauthorized persons.

A known device of this kind is, for example, one in which a key is attached to the main body of a personal computer, and by turning the key, the personal computer can be operated with a normal keyboard, or disabled. .

[Problems to be Solved by the Invention] However, such conventional personal computers cannot be operated using the keyboard unless the person attempting to operate the computer has a key. However, if you leave the key in a state where it can be operated using the keyboard, or if the key is duplicated,
However, there are disadvantages in that confidential information stored in a storage device or the like may be intercepted and important files may be destroyed.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an electronic device with a keyboard input means that can eliminate the above-mentioned drawbacks, improve operability, and ensure file integrity.

[Means for solving problems]

To achieve the above object, the present invention provides an electronic device having a keyboard input means, which includes means for storing and retaining a recitation code, a means for inputting a recitation code, and a method for inputting the stored recitation code. The present invention is characterized by comprising a comparing/determining means that compares the recited code and sets the keyboard input means to be operable when the two match.

(Operation) When a recitation code is input from an input means provided in addition to the keyboard input means, it is compared with the recitation code stored in advance and it is determined whether or not the two codes match. Ru.

When the codes do not match, input operations from the keyboard remain disabled, and when they match, operations are enabled.

In this way, a specific person who knows the recitation code can freely access it by inputting it from the recitation code input means, improving the operability of electronic devices.
File integrity can also be ensured.

(Example) Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing one aspect of an embodiment of the present invention, in which A is a recitation code storage means for storing and retaining a recitation code, B is a recitation code input means for inputting a recitation code, C compares the recitation code stored in the recitation code storage means A and the recitation code input from the recitation code input means B, and when the two match, constitutes the main functional section of the personal computer. This is a comparison/judgment means that enables operation by the keyboard input means E of the arithmetic processing means.

FIG. 2 shows a further embodiment of the above embodiment.

In the same figure, 1 is a key panel for inputting a recitation code as recitation code input means B, and 2 is a recitation code storage means A for storing and storing recitation codes in advance. A memory 3 is used as a work area to compare and judge the recitation code input from the memory 2, and 3 is connected to the memory 2 to store and retain the registered recitation code in the memory 2 when the power is off. A battery serves as a necessary backup power source; 4 is a control unit that is connected to the key panel 1 and memory 2 and controls them, and also exchanges information with the PII 5 of the personal computer; 5 controls each input/output device; 6 is a keyboard, 7 is a power supply, and 8 is a CRT.

5A is a fixed memory (ROM) in which a control program according to the flowchart shown in FIG. 3 is stored.

5B is a flag indicating an operable state and an inoperable state for accepting input from the keyboard 6.

Next, an example of the control procedure of this embodiment stored in the ROM 5A in the above configuration will be explained with reference to the flowchart shown in FIG.

When the power supply 7 is turned on, power is supplied to the personal computer and the CPU 5 is initialized (step Sl).

However, in this state, input from the keyboard 6 is not accepted, and no matter what is input to the keyboard 6, the CPt 15 does not operate. This means that via line 13 the controller 4
has been informed.

Next, in step S2, it is determined whether or not there is an input from the key panel 1, and if there is no input, the process returns to the original state and waits for an input. When the recitation code is input to the key panel 1, the control unit 4 inputs the code to the memory 2 through the input data 22.
At the same time, the registered recitation code is loaded into the work area (step S3).

Then, in step S4, the input recitation code and the registered recitation code are compared, and if they do not match, the process returns to the original input waiting state.

When a match is found, the control section 4 notifies the CPU 5 of this fact via the line 13, and thereby sets the flag 5B to be ready for operation to accept input from the keyboard 6 (step 55).

In this way, normal keyboard input processing becomes possible.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, since an electronic device is equipped with an access means for determining the code for recitation in addition to a keyboard input means, the operability of the electronic device is improved, and File integrity is ensured.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one aspect of an embodiment of the present invention, FIG. 2 is a block diagram further embodying the embodiment, and FIG. 3 is a flowchart showing an example of a control procedure of the above embodiment. A: Recitation code storage means, B: Recitation code input means, C: Comparison/judgment means, D: Calculation/processing means, E: Keyboard input means, 1: Keys Panel, 2...Memory, 4...Control unit, 5...CPU. 58... Control program storage ROM, 5B ・
... The input amount is marked with a flag, 6 ... keyboard, 8 ... CRT. FIG. 1 is a block diagram showing one aspect of the embodiment of the present invention. FIG. 2 is a block diagram showing a more specific embodiment.
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Claims (1)

[Scope of Claims] An electronic device having a keyboard input means, comprising: a means for storing and retaining a recitation code; a means for inputting a recitation code; the memorized recitation code and the input recitation code; and comparing and determining means for comparing the two values and, when the two match, for setting an operation using the keyboard input means to be possible.