JPH11305883A - Crt cut system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate management without the need of carrying an ID card or the like and to provide sure security by providing a means for turning off the display of a display after detecting the leaving of an operator by a human sensor and the means for restoring the display of the display by the input of a password. SOLUTION: This system is provided with a screen elimination means 2 for turning off the display of the display after detecting the leaving of the operator by the human sensor provided on a personal computer side and a screen restoration means 3 for restoring the display of the display by the input of the password. Also, an input device locking means 4 is provided so as to not only eliminate the display but also more actively block operation interference such as the alteration of a program and data or the like. Also, a power source is held even when the power switch of a computer is turned off when the screen elimination means 2 is operated. Also, in the case that the operator erroneously inputs the password or another person operates an input device or the like without permission, alarm sound is rung.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CRT cutting system mainly used in offices, stores, laboratories, calculation centers, and other places where other people may enter near an operation area.

[0002]

2. Description of the Related Art In an environment in which a person other than an operator of this kind enters, when an operator temporarily leaves a seat,
You can peep at the contents displayed on the display,
There is a risk of the program being stolen or being operated by others without permission, and its security is not guaranteed.

[0003] Every time the user leaves the seat, the operator is forced to turn off the power every time, in addition to the operation of turning off the power, requires time and effort for restarting, and the operator is troublesome. If you carry an ID card that performs wireless communication with a station within a certain distance,
A system has been developed in which the display switch of the display is turned off and the screen is restored when the display is returned near the seat.

[0004]

However, in the above-mentioned security system of the ID card type, the ID card must be carried at all times, which is complicated in management, and the user leaves the ID card near the desk of the personal computer and leaves. Then, there is no effect at all, and furthermore, if the ID card is lost or the ID card is handed over to another person, there is a problem that the operator himself cannot operate.

[0005] The main object of the present invention is to provide an operator with an ID
It is an object of the present invention to provide a CRT cut sys- tem which can ensure reliable security without having to carry a card or the like and is easy to manage.

[0006]

According to the first aspect of the present invention,
In order to achieve the above-mentioned main object, as shown in the example of FIG. 1, a screen erasing means (2) for turning off the display of the display after detecting the absence of the operator by a human detection sensor (1) provided on the personal computer side, The display device is provided with a screen restoring means (3) for restoring the display of the display by inputting a password. Here, the human detection sensor (1) is a sensor that detects an object such as a person, and is not a sensor that substantially detects electric machinery such as an ID card carried by a person. The type of the human sensor (1) includes a specific wavelength (7 μm to 14 μm) emitted from the human body.
There are infrared sensor, pulse sensor, CCD image sensor, thermal image sensor, optical sensor, ultrasonic sensor, ultrasonic range finder, etc.

According to a second aspect of the present invention, as shown in FIG. 1, not only the display is erased but also the operation obstruction such as alteration of a program or data is more positively prevented. And an input device locking means (4). Input device locking means (4)
Is to mainly prevent input from all input devices such as a keyboard, a mouse, and a microphone.

According to a third aspect of the present invention, in the first aspect of the invention, only the display of the display is deleted.
This is to prevent programs and data from being erased when the power is turned off assuming that a personal computer is not used.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a warning sound is emitted when an operator inputs a password by mistake or another person operates the input device without permission.

[Brief description of the drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is an explanatory diagram of an operation of a screen erasing means (2).

FIG. 3 is a front panel diagram and a rear panel diagram of the present invention.

FIG. 4 Wiring diagram

[Explanation of symbols]

 1: Human detection sensor 2: Screen erasing means 3: Screen returning means 4: Input device locking means Ta: Fixed time (timer) D: Display P: Personal computer SW1: CRT cut system power supply K: Keyboard M: Mouse S: Other Input device AC: AC power supply for CRT cut system AC1: AC outlet for personal computer AC2: AC outlet for other input device AC3: AC outlet for other input device AC4: AC outlet for other input device AC5: AC for display Outlet K1: Input terminal for keyboard K2: Output terminal for keyboard M1: Input terminal for mouse M2: Output terminal for mouse T1: Input terminal 1 for other input devices T2: Output terminal 1 for other input devices T3: Other inputs Device input Child 2 T4: Output terminal 2 for other input device F: Fuse CPU: Control ROM S1: Password input 1 S2: Password input 2 S3: Password input 3 S4: Password input 4 S5: Password input 5 S6: Password input 6 S7 : Password input 7 S8: Password input 8 S9: Password input 9 S11: System setting S12: System release A: Relay B: Relay C: Relay LED: Indicator (with built-in SW1)

Claims (4)

[Claims] 1. A human detection sensor (1) provided on a personal computer side, and a screen erasing screen for extinguishing a display after detecting the absence of an operator for a predetermined time (Ta) by the human detection sensor (1). Means (2) and a screen resetting means (3) for restoring the display of the display erased by inputting a password, and a CRT for security of a personal computer.
It is a cutting system. 2. When the screen erasing means (2) works on the display screen, the keyboard (K), mouse (M) and other input devices (S) are locked by the input device locking means (4). CRT cut system. 3. A CRT cut system in which the power is maintained even when the power switch (SW) of the computer is turned off while the screen erasing means (2) is working. 4. To activate the screen return means (3),
This is a CRT cut system that emits a warning sound when a password other than the registered password is entered from the keyboard (K).