JP2555106B2 - Information processing device - Google Patents

Description

The present invention relates to an information processing apparatus, and more particularly, to an undesired situation such as destruction of input data due to erroneous disconnection of a power switch, interruption of processing or re-execution during program execution. The present invention relates to an information processing device that prevents the occurrence of noise.

[Conventional technology]

Information processing devices such as personal computers (personal computers) and word processors in recent years have changed from a desktop type consisting of a main body and a display such as a CRT connected to the main body to
The portable, compact and lightweight portable type has become popular.

A portable personal computer or word processor generally has a structure in which a key input device, a computing device, a storage device, a display device, and a power supply device are integrated.

As the display device, a flat display such as a liquid crystal display is often used, and in many cases, the display device is attached to a back surface of a lid rotatably provided on the device body. When the device body is not used, the lid is closed to make the whole device a box shape that is easy to carry. In that state, the key input device and the display device are hidden by the lid and protected from external impact. .

Further, in consideration of use during movement, this type of device can use a battery, particularly a rechargeable battery, as a power source in addition to a commercial AC power source. Therefore, in consideration of the life of the rechargeable battery, the power is automatically cut off when the main body is not used, that is, when the lid is closed.

As a device related to this type, for example, a device described in JP-A-59-75327 can be cited.

[Problems to be solved by the invention]

In the above-mentioned conventional technique, no consideration was given to power-off when the lid is accidentally closed during use.
In other words, the lid of this kind of device is often accidentally closed when it is used during movement. For example, if the lid is accidentally closed during data entry, character entry, or program creation or execution, the There is a drawback that the power is cut off regardless of the intention and the user has to re-input or re-execute. Also, if the memory is a static RAM that is backed up, the program will not disappear, but if the power is cut off during execution of the program, the execution of the program must be restarted from the beginning.

An object of the present invention is to provide an information processing apparatus which eliminates the problems such as destruction of input data and characters and re-execution of programs even if the lid is accidentally closed.

[Means for solving problems]

The above-mentioned object is to detect the closing of a lid provided rotatably on the information processing apparatus main body, timer means for sending out power-off information after a certain time has passed from the detection by this detecting means, and this timer. This is achieved by providing a power supply disconnecting means including power supply switch means for receiving power supply disconnection information from the means and disconnecting the power supplied to the information processing apparatus main body.

[Work]

The power supply disconnecting means including the timer means and the power supply switch means supplies the erroneous information processing apparatus main body after a lapse of a predetermined time from the detection of the closing of the rotatably provided lid of the information processing apparatus main body. Turn off the power. But,
If the lid is opened before the elapse of the certain time, the power is not cut off.

With the above configuration and operation, even if the lid is accidentally closed while data is being input, programs are being created or executed, the power is not cut off by opening the lid immediately after that. Therefore, there is no need to re-input data, the problem that the program is destroyed, and the trouble of re-executing the program.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a configuration diagram of an embodiment of an information processing apparatus according to the present invention, in which FIG. 1 (a) is an external view and FIG. 1 (b) is a circuit configuration diagram.

In FIG. 1, reference numeral 1 is an information processing apparatus main body having a built-in arithmetic unit and a storage unit (neither of which is shown), and a key input unit 4 having a large number of function keys, numeric keys, etc. It is provided. Two
Is a lid rotatably attached to the information processing apparatus main body 1 via a hinge 202, and the lid is held at an arbitrary angle by the frictional force of the hinge 202. Reference numeral 201 denotes a flat display provided over substantially the entire back surface of the lid 2. The flat display 201 is capable of displaying a large number of lines of characters and figures. 102 is the information processing body 1
It is a floppy disk drive provided on the side of the. 103
Is an information processing unit that collectively shows the arithmetic unit, the storage device, the key input device, the flat display, and the floppy disk drive, and 5 is a power source that supplies power to the information processing unit 103. In FIG. Shows.
Reference numeral 6 is a power supply disconnecting circuit.

In the same configuration, the switch portion 3 is closed when the lid 2 is opened, and the switch portion 3 is opened when the lid is closed. The power supply disconnection circuit 6 detects the state (open or closed) of the switch unit 3 and supplies power from the power supply 5 to the information processing unit 103 when the switch unit 3 is closed, that is, when the lid 2 is open.

Next, when the lid 2 is closed, the switch unit 3 is opened. When the power-off circuit 6 detects that the switch section 3 has been opened, it waits for a certain period of time, then detects the state of the switch section 3 again, and if it is open (the lid 2
(When is closed), the information processing unit 103 and the power source 5 are disconnected.

Next, a configuration example of the power-off circuit 6 which is the most characteristic of the present invention will be described.

FIG. 2 is a block diagram showing the configuration of the power-off circuit, 60 is a timer section that sends out power-off information after a lapse of a certain time based on information from the switch section 3, and 61 is a timer section.
This is a power switch unit that turns the power on and off according to the power-off information from 60.

The power-off circuit 6 is composed of the timer section 60 and the power switch section 61 described above. The timer unit 60 detects the state of the switch unit 3 and sends power-off information (ON information) to the power switch unit 61 to turn on the power when the lid is open. Next, when it is detected that the lid is closed, the state of the switch unit 3 is detected again after a lapse of a certain time, and if the lid is still closed, the power switch unit 61 is turned off.
The power-off information (OFF information) is sent to. When the power switch unit 61 receives the ON information from the timer unit 60,
And the information processing unit 103 are connected, and when the OFF information is received, the power source 5 and the information processing unit 103 are disconnected.

FIG. 3 is a block diagram showing a concrete configuration example of the timer section. 601 is a counter, 602 is a register, 603 is a comparator, and the same reference numerals as those in FIGS. 1 and 2 correspond to the same parts.

In the figure, the timer unit 60 is a counter 601, a register 6
It is composed of 02 and a comparator 603.

The counter 601 is always cleared to zero when the switch section 3 detects that the lid is open. When it is detected that the lid is closed, counting is started, and the comparator 603 detects that the count value becomes equal to the value set in the register 602, and the power switch unit 61
Sends off information. According to this configuration, the register 60
By freely changing the value set to 2, the user can freely set the time from when the lid is closed until the power is turned off.

FIG. 4 is a circuit diagram showing a specific configuration example of the timer section and the power switch section, in which the timer section 60 is composed of the capacitor C, the resistor R and the battery B, and the power switch section 61 is a relay. Is.

In the figure, when the lid is open, the switch unit 3
Is closed (turned on), and therefore the relay of the power switch unit 61 operates to connect the power source 5 and the information processing unit 103.

When the lid is closed, the switch section 3 is opened (OFF),
The relay of the power switch unit 61 operates only for a certain period of time according to the time constant determined from the values of the capacitor C and the resistance R, and thereafter the power source 5 and the information processing unit 103 are disconnected. In this circuit configuration, time can be adjusted by changing the resistance R to a variable resistance. The battery B may be shared with the power source 5. As a result, the timer unit 60 can be realized at low cost because it can be configured with only the capacitor C and the resistor R.

Although the above is an embodiment using hardware, it can also be realized by software of the information processing apparatus main body.

FIG. 5 is a flow chart for explaining another embodiment of the present invention, and this embodiment realizes the present invention by software of the information processing apparatus main body.

In the figure, when the lid of the apparatus main body is closed, the switch unit 3 generates an interrupt. Then, after waiting for a certain period of time (step 1), when the certain period of time has elapsed, the switch unit 3 is checked (step 2), and when it is determined that the lid is closed (step 3), power-off processing is performed (step 4). ).

In the power-off process, for example, if the floppy disk is operating, the process is interrupted, and if the program is operating, the work area of the memory being used and the value of the register are saved. By doing so, it is possible to prevent the floppy disk from being damaged and to easily re-execute the program.

If it is determined in step 3 that the lid is open, the process returns to the process before the lid was closed.

〔The invention's effect〕

As described above, according to the present invention, even if the lid is accidentally closed, the power is not cut off by opening it immediately. Therefore, for example, when the lid is closed while the program is being created or executed, Provided is an information processing apparatus having an excellent function, excluding the above-mentioned drawbacks of the prior art, such as preventing the program from being destroyed by opening the lid immediately and avoiding the trouble of re-executing the program even if it happens. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of an information processing apparatus according to the present invention, in which FIG. 1 (a) is an external view, FIG. 1 (b) is a circuit diagram,
2 is a block diagram showing the configuration of the power supply disconnecting circuit, FIG. 3 is a block diagram showing a specific configuration example of the timer unit, and FIG. 4 is a circuit diagram showing a specific configuration example of the timer unit and the power supply switch unit. FIG. 5 is a flow chart for explaining another embodiment of the present invention. 1 ... Information processing device main body, 2 ... Lid, 3 ... Switch part, 4 ...
… Key input section, 5 …… Power supply, 6 …… Power cutoff circuit, 60 …… Timer section, 61 …… Power switch section, 103 …… Information processing section.

Front page continuation (72) Inventor Nobuo Tsuchiya 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Hitachi Video Engineering Co., Ltd. (56) Reference JP-A 61-223914 (JP, A)

Claims (1)

(57) [Claims] 1. An information processing apparatus main body including an arithmetic unit and a storage device, a lid rotatably provided on the information processing apparatus main body, a power supply for supplying electric power to the information processing apparatus main body, In an information processing device including a switch unit that detects an open / closed state of a lid, a timer unit that sends power-off information when it is detected that the lid is closed for a certain period of time based on information from the switch unit. An information processing device, comprising: a power supply disconnection circuit including the information processing device body and a power supply switch unit for disconnecting the power supply and stopping power supply when the power supply disconnection information is received from the timer unit. apparatus.