JPH05204769A - Secret time lock device - Google Patents

Abstract

PURPOSE:To improve the secret function by providing a time condition addition means adding the time condition to the reception of passwords releasing the secret function. CONSTITUTION:A work RAM 10 being a time condition addition means compares the passwords inputted in a password input buffer 101 with a storage password of a password register 102. When they agree, the RAM 10 compares the current time of a clock time register 104 with the secret release time stored in a secret time register 103. As a result, if the current time is within the release time, a secret state register 106 is placed in the secret release state and the secret of a secret setting register 105 is released. If it is out of the release time, the register 106 is placed in a password error state displaying 'password error' and the release of the secret function out of the designated time is rejected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a secret function in electronic devices such as electronic memos.

[0002]

2. Description of the Related Art The operation of the secret function of a conventional electronic memo will be described with reference to the flowchart of FIG.

First, when the password has not been set, the secret key is pressed to display "password set?" On the display to enter a state waiting for password setting (step Z1), and the password ABCDEF is input by using the character keys. Remember the password with the key (Step Z
2). Then, "Secret setting!" Is displayed to notify that the secret has been set (step Z
3) Move to the currently held mode (step Z
4). Then, press the secret key to display "password?" On the display and wait for the password input (step Z5), enter the password (ABCDEF) (step Z6), and press the input key to compare the passwords. , If the password is correct, "Unlock password!"
Is displayed to inform that the secret has been released (step Z7).

[0004]

However, in the above-mentioned conventional electronic memo, since the secret function is canceled only by the password, there is a risk that the secret data may be known to another person if the password is known to another person. There was a problem that there was.

In view of the above-mentioned problems in the conventional electronic memo, the present invention provides a secret time lock in which the secret function can be made more strict by giving a time condition to the acceptance of the password for releasing the secret function. Provide the device.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a secret including time condition adding means for adding a time condition to the acceptance of a password for canceling the secret function so that the secret function cannot be canceled outside the designated time. Achieved by time locking device.

[0007]

In the secret time lock device of the present invention, the time condition adding means adds a time condition to the acceptance of the password for canceling the secret function so that the secret function cannot be canceled outside the designated time.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a secret time lock device of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a secret time lock device according to the present invention, showing an example of the construction of a work random access memory (hereinafter referred to as a work RAM) which is a time condition adding means. ..

FIG. 2 shows an example of the configuration of an electronic memo system including the work RAM shown in FIG. First, the electronic memo system of FIG. 2 will be described.

The electronic memo system shown in FIG. 2 is a central processing unit (CPU) 11 for controlling the system, and a read-only memory connected to the CPU 11 for storing programs and constants for operating the system. (ROM) 12, C
Random access memory (RAM) 1 connected to PU11 and functioning as system control and numerical memory
3, LCD drive circuit 14, which is connected to the CPU 11 and controls the drive of the liquid crystal display (LCD) section, LCD drive circuit 14
Connected to the LCD section 15 for displaying based on the LCD drive circuit 14 and the CPU 11 and connected to the key (KE
Y) It is constituted by a KEY matrix 16 for detecting an input.

The CPU 11 includes a work RAM 10 and a calculation unit 17.

Next, referring to FIG. 1, a work RAM 10 which is an embodiment of the secret time lock device of the present invention will be described.

The work RAM 10 shown in FIG. 1 has a password input buffer 101 for inputting a password to set a password or to release a secret, a password register 102 for storing a password, and a secret time register 103 for storing a time for receiving the password.
, A clock time register 104 indicating the current clock time,
Secret setting register 105 indicating setting and cancellation of secret, waiting for password setting, waiting for cancellation time input,
It is composed of a secret status register 106 indicating a secret status such as a password input wait state, a display buffer 107 for displaying a message and the like, and a secret time input buffer 108 for inputting a cancellation time to set a secret cancellation time.

Next, the operation will be described.

FIG. 3 is an explanatory diagram of a secret processing function in each buffer and register of the work RAM 10 of FIG.

As shown in FIG. 3, the process A is a process of comparing the input password of the password input buffer 101 with the password stored in the password register 102 in order to release the secret. Process B is a process of comparing the time when the password is input to cancel the secret and the time when the password stored in the secret time register 103 is accepted. Process C
Is a process of transferring the message 19 generated from the program to the display buffer 107 which generates display data.
In the process D, the password to be input is stored in the password input buffer 101 when the password is stored contrary to the process A.
From the password register 102 to the password register 102. Process E is a process of transferring the set time from the secret time input buffer 108 for inputting the release time for setting the release time to the secret time register 103 when storing the secret release time.

FIG. 4 is a diagram for explaining the operation of the password setting method for the electronic memo shown in FIG.

FIG. 5 is a diagram showing an external configuration example of the electronic memo of FIG.

As shown in FIG. 5, the electronic memo shown in FIG. 2 is composed of an electronic memo display section 20 and key input sections 21 to 28, and the key input section 21 is a character key for inputting data. -The input section 22 is a numeric key, the key input section 23 is a mode key, the key input section 24 is an input key for storing the data input in each mode, and the key input section 25 is a power-on (ON). ON
Key and clear key Power off (OFF) key, key input section 26 is a search key, key to call the data of each mode.
The input unit 27 is a Romaji-Kanji conversion key for converting the input Roman characters into Kanji, and the key input unit 28 is a secret key pressed when setting or canceling the secret.

In process F, the secret key for the electronic memo is displayed.
Press 28 to start and press "Password set?"
Display on D15 and wait for password setting.

In the process G, the password ABCDEF is input by the character key 21 and stored by the input key 24. In process H,
"Secret release time?" Is displayed and the secret release time is ready for input. In the process I, the secret cancellation set time “10: 00-111: 00” is input and stored. In process J, "Secret setting!" Is displayed on the LCD 15, and the secret setting is completed.

FIG. 6 is a diagram for explaining the operation of the electronic memo of FIG. 2 outside the secret cancellation time. In process K, the set secret release time “10:00 to 11:00”
When the secret key 28 is pressed to cancel the secret at 9:00 outside, "password?" Is displayed in the process L, and the password waiting state is entered. In process M,
The password ABCDEF is entered, password comparison is performed, and since it is outside the secret cancellation time in process N, even if the passwords match, "password error!" Is displayed and the cancellation is rejected.

FIG. 7 is a diagram for explaining the operation of the secret cancellation method in the electronic memo shown in FIG. If the secret key 28 is used to cancel within the secret cancellation time previously set in the process O, that is, 10:30, the process P displays "password?" And waits for the password input. In the process Q, the password ABCDEF is entered, the input keys 24 are pressed to compare the passwords, and since it is within the release time, the process R displays "Release secret!" And the secret is released.

FIG. 8 is a main flow chart of the key processing of the electronic memo with the secret time lock device of the present invention.

FIGS. 9 and 10 are flowcharts of the secret key / alphanumeric key processing subroutine of the secret time lock device according to the present invention.

FIG. 11 is a flow chart of the input key processing subroutine of the secret time lock device of the present invention.

Hereinafter, more detailed processing will be described with reference to the flow charts of FIGS. 8, 9, 10, and 11.

In the main flow chart of FIG.
In the initial state, no password is set,
The password is not stored in the password register 102.

First, in S1, the key is selected from the KEY matrix 16.
When 21 to 28 are input, key input processing is performed. S2
Then, the entered key is identified. If the input key is the secret key 28 in S3, secret key processing is performed, and the flow returns to key input processing S1. If the input key is the character key 21 and the numeral key 22 in S4, character / number key processing is performed, and the process returns to the key input processing S1. If the input key is the input key in S5, the input key process is performed, and then the process returns to the key input process S1. In the input process, a process of storing the input password, secret time, and secret state in the work RAM 10 in the CPU 11 is also performed. In S6, if the input key is another key, other key processing is performed, and the key input processing S
Return to 1.

Next, the secret key processing will be described with reference to FIG.

First, in step S7, when the secret key 28 is pressed, the presence or absence of a password is first determined. Whether or not a password is stored in the password register 102 is determined. "Waiting state" means that there is no password. The "password input waiting state" represents a state in which there is a password and a secret is set. In S8, if the secret key 28 is pressed when there is no password, the password setting waiting state is entered, and the secret status register 106 is set to the password setting waiting state. In S9, "password set?" Is displayed on the display unit 20 (LCD 15). For this, the message 19 generated from the program is input to the display buffer 107, and the LCD drive circuit 14 causes the LCD 15 to display.
It is performed in the process displayed in. After that, the same processing is performed for displaying the message. In S10, if the password is stored in the password register 102, it is determined whether the secret is set or released. This processing determines whether the secret is set or released from the contents of the secret setting register 105. S1
In No. 1, when the secret is set, pressing the secret key 28 puts it in a state of waiting for the password input. The secret status register 106 is set to the status of waiting for the password input. In S12, "Password?" Is displayed on LCD15.
Is displayed.

On the other hand, if the secret is released in S13, pressing the secret key 28 brings the secret setting state. Set secret setting register 105 to secret setting. In S14, LCD 15 displays “Secret setting!”.

Next, the processing of the character / number keys will be described with reference to FIG.

First, when the character / number keys 21 and 22 are pressed in S15, it is first determined whether or not the password setting waiting state is set. This is the secret status register 106
Determine the state from the contents of. In S16, if the password setting waiting state is entered, it is determined whether or not the secret cancellation time input waiting state is entered. This is determined from the secret status register 106. If it is not in the state of waiting for the secret cancellation time input in S17, the password is input by pressing the character / number key. Password ABCDEF entered from the character keys 21 is the password input buffer 101
Entered in. In the state of waiting for the secret cancellation time input in S18, when the numeric key 22 is pressed, the secret cancellation time (for example, 10: 00-11: 00) is input.
This is that the release time is input to the secret time input buffer 108. In S19, if it is not in the password setting waiting state, it is discriminated whether or not it is in the password input waiting state. The secret state register 106 discriminates the state. In S20, when the password input waiting state is entered, the password is input by pressing the character / number keys, and the password is input to the password input buffer 101. In S21, when the password input waiting state is not entered, character input processing other than the secret mode is performed.

Next, the input key processing will be described with reference to FIG.

When the input key 24 is pressed in S22, it is first determined whether or not it is in a password setting waiting state, and the secret state register 106 determines the state.
In S23, if the password setting wait state is set, the state is checked from the secret state register 106 to see if it is in the secret release time input wait state. In S24, if the input is not in the waiting state for the secret cancellation time input, the input key 24 is pressed to store the password. This process corresponds to the process (D) in FIG. 3, and the password is transferred from the password input buffer 101 to the password register 102 and stored therein. In step S25, a state for waiting for the secret cancellation time input is entered. The secret state register 106 is set to the release time input waiting state.

In step S26, "Secret release time?" Is displayed on the LCD 15. In S27, if the input of the secret cancellation time is awaited, the secret cancellation time is stored by pressing the input key 24. As shown in the process (E) of FIG. 3, the release time is transferred from the secret time input buffer 108 to the secret time register 103, and the secret release time is stored in the secret time register 103.
Also, if you do not enter the secret cancellation time,
When 24 is pressed, it is stored as 00: 00-23: 59 and the password can be released at all times.

Then, in S28, the secret setting state is set. In S29, "Secret setting!" And LCD15
To display. In S30, if the password setting state is not set, it is determined from the secret state register 106 whether or not it is in the password input waiting state. S3
In No. 1, in the case of waiting for password input, when the input key 24 is pressed, the input password and the stored password are compared by comparing the password of the password input buffer 101 and the password of the password register 102. This is the process (A) of FIG.

In S32, if the passwords are the same in the comparison of the passwords, the current time of the clock is compared with the stored secret cancellation time. This process is
In the process (B), the time of the clock time register 104 and the time of the secret time register 103 are compared. S3
In 3, when the current time is within the release time as compared with the secret release time, the secret is released and the secret setting register 105 is released. In S34, if the password is incorrect, or if the release time is detected, the password is set to the incorrect state, and the secret state register 106 is set to the incorrect word. In S35, "Password error!" Is displayed and rejected. In S36, when the password input waiting state is not entered, the input keys other than the secret mode are processed.

[0041]

The secret time lock device of the present invention comprises time condition adding means for adding a time condition to the acceptance of the password for canceling the secret function so that the secret function cannot be canceled outside the designated time. Therefore, the secret cannot be canceled by the password outside the secret cancellation time, and even if the password is known to another person, the secret cancellation is not allowed to another person outside the specified time, and the secret function becomes more strict.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a work RAM which is an embodiment of a secret time lock device according to the present invention.

FIG. 2 is a block diagram showing a configuration example of an electronic memo system including the work RAM shown in FIG.

3 is an operation explanatory diagram of a used memory block in the work RAM in FIG. 1. FIG.

4 is an operation explanatory diagram of a password setting method in the electronic memo system of FIG.

FIG. 5 is a schematic explanatory diagram for explaining an outer shape of the electronic memo of FIG.

FIG. 6 is an explanatory diagram of the operation in the electronic memo system of FIG. 2 outside the secret cancellation time.

7 is an operation explanatory diagram of a secret cancellation method in the electronic memo system of FIG.

8 is a main flowchart for explaining a key processing operation of the electronic memo system of FIG.

9 is a secret key of the electronic memo system of FIG.
It is a flow chart of a subroutine for explaining a letter and number key processing operation.

10 is a flowchart of a subroutine for explaining an input key processing operation of the electronic memo system of FIG.

11 is a flowchart of a subroutine for explaining an input key processing operation of the electronic memo system of FIG.

FIG. 12 is an operation explanatory diagram of a secret function of a conventional electronic memo.

[Explanation of symbols]

 10 Work RAM 101 Password input buffer 102 Password register 103 Secret time register 104 Clock time register 105 Secret setting register 106 Secret status register 107 Display buffer 108 Secret time input buffer

Claims (1)

[Claims] 1. A secret time lock device comprising a time condition adding means for adding a time condition to acceptance of a password for releasing the secret function so that the secret function is not released outside a designated time. ..