JPH0776899B2 - Small information processing device - Google Patents

Description

The present invention relates to a small information processing device such as an electronic dictionary or an electronic notebook, and particularly to a memory card (ROM) as an external memory.
Card, IC card, etc.), the power is turned off when the lid is opened when the card is taken out from the storage section of the card.

(B) Conventional Technology In general, in various information processing apparatuses, most personal computers used in offices or homes are driven by an AC power source.

On the other hand, a portable type small-sized information processing apparatus often has a structure in which a built-in memory is minimized and a memory is added by an external memory for expansion, and a method of driving a built-in battery as a power source has been proposed.

As one example thereof, Japanese Patent Laid-Open No. 61-150088 is proposed, and a memory card used in a data processing control device is proposed.

(C) Problems to be Solved by the Invention A conventional memory card merely considers battery consumption, and no particular power supply is applied to the main body of the information processing apparatus. For example, when the memory card is removed, It is better to turn off the power switch on the main unit when the battery is used to reduce the consumption of the power battery. Moreover, the internal circuit is not protected when the memory card is attached or detached.

In view of this point, the present invention proposes a configuration in which the power supply circuit is turned off at the same time when the memory card is removed from the main body.

(D) Means for Solving the Problems The present invention comprises a small-sized information processing device main body and an external memory coupled to the main body, and the small-sized information processing device main body is provided with a storage portion for storing the external memory. In a small-sized information processing device in which a lid is provided to the storage part so as to be freely opened and closed
A power supply circuit for supplying electric power to a load circuit provided in the main body, a bistable memory holding circuit having first and second inputs, and a first switch means connected to the first input, Gate means connected to the second input and having first and second inputs, and a control circuit connected to the first input of the gate means and outputting a control signal according to the operating state of the load circuit. And a second switch means connected to the second input of the gate means and interlocking with the opening and closing of the lid body, the output of the bistable memory holding circuit is input to the power supply circuit, and the load circuit It is a configuration for controlling the power supply to the.

(E) Operation In the small-sized information processing device of the present invention, when the external memory storage part is inserted into the main body of the device and the external memory is used and then taken out, the cover of the storage part is opened and the power line is turned off at the same time. , The load of the power supply circuit in the device, for example LC for display
The power supply to various parts such as the D, the display circuit, and the arithmetic circuit is cut off.

(F) Embodiments The present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a small-sized information processing apparatus according to the present invention, and FIG. 2 (a) is a state in which a lid of an external memory storage section is closed. ) Indicates a state in which the lid is opened.

In the drawings, (1) is a small information processing device body, (2)
Is a memory card as an external memory, (3) is a card storage, (4) is an eject button, (5) is a lid,
(6) is a lid interlocking switch, (7) is a protrusion for pressing the switch, (8) is a main substrate, (9) is a protrusion insertion hole, (10) is a control circuit, (11a) and (11b) are main A power switch, (12) is a control terminal, (13) is a flip-flop, and S and R are set and reset terminals, which are low active type.
(14) is a flip-flop output terminal, (15) is a power supply circuit, (16) and (17) are power supply terminals, (18) is a power supply output terminal,
(19) shows an internal battery and (20) shows an OR gate.

Next, the operation of the device of the present invention will be described. The power switch (11a) is turned on once with the state shown in FIG. 2 (a), that is, with the lid (5) provided on the small information processing device main body (1) closed. When pressed, the lid interlock switch (6) in FIG.
Also, since the main power switch (11b) is opened, power is supplied from the power terminal (16) and is held at a high (H) level, and the main power switch (11a) is pressed once to a low level ( L) pulse is applied to the flip-flop (13), and the terminal (14) serves as a control signal to the power supply circuit (15).
A low level (L) output appears on the power supply circuit (15).
Is turned on and power is supplied to various loads from the output terminal (18).

Next, when the main power switch (11b) is pressed to apply a low level (L) pulse, the flip-flop (13) is inverted and the terminal (14) becomes high level (H), so that the power circuit (15) It turns off and the power to various load circuits is cut off.

Further, in order for the user to take out the memory card (2) from the storage section (3) of the information processing apparatus main body (1) while the power supply circuit (15) is operating normally, the lid body (5) is opened at the same time. The interlocking switch (6) is closed and one input terminal of the OR gate (20) is set to low level. At this time, if the load connected to the power supply circuit (15) is operating, the output from the control circuit (10) is kept at a high level (H), and the output terminal of the flip-flop (13) ( 14) is kept at the high level (H), and the control circuit (1
The output of (0) changes to low level (L), the flip-flop (13) operates in the same manner as the main power switch (11b) is pressed once, and is inverted, and the output terminal (14) goes to high level (L). H), the power supply circuit (15) is turned off.

Further, when the lid body (5) is closed in this state, that is, as shown in FIG. 2 (b) to FIG. 2 (a), the structure shown in FIG. 1 is obtained and the protrusion shown in FIG. 2 (a) is obtained. The child (7) moves the push rod (21) of the lid interlocking switch (6) to the left, so that the switch (6) is opened and one terminal of the OR gate (20), that is, the switch (6) (11b). ) Is set to the high level, the power supply circuit (15) can be controlled to be turned on by pressing the main power switch (11a) and turned off by pressing (11b), and connected to the output terminal (18). It becomes possible to connect and disconnect the various loads applied, for example, the LCD as the display element, the power supply to the drive circuit and the like.

In the above description, the main power switch (11a) (11b)
Is provided on a keyboard as an input means for information processing, and controls on / off of the power supply circuit (15) from the keyboard side, while the memory card (2) as the external memory is removed when the memory card (2) is removed. The configuration in which the lid interlocking switch (6) is immediately driven by opening the lid body (5) of the storage section makes each operator easy to use.

(G) Effect of the Invention According to the present invention, even when the lid provided in the storage section is opened to take out the external memory, if the load circuit is in operation, a control signal indicating that effect is sent from the control circuit to the gate. Since the power supply circuit is supplied to the means, the power supply circuit is not immediately turned off.After that, the power supply circuit is turned off after the operation of the load circuit is completed or is ready to be completed. It is possible to reliably prevent breakage of the element.

[Brief description of drawings]

FIG. 1 is a block diagram of a compact information processing device according to the present invention, and FIG.
The figure shows a cross-sectional view of the main part of the device. (1) …… Small information processing device body, (2) …… Memory card, (3) …… Card storage section, (5) …… Lid body,
(6) …… Lid interlock switch, (11a) (11b) …… Main power switch, (15) …… Power circuit, (19) …… Built-in battery.

Claims (1)

[Claims] 1. A compact information processing apparatus main body and an external memory coupled to the main body, wherein the small information processing apparatus main body is provided with a storage portion for storing the external memory, and the storage portion is openable and closable. A small information processing device provided with a power supply circuit for supplying power to a load circuit provided in the main body, a bistable storage holding circuit having first and second inputs, and a connection to the first input. A first switch means connected to the second input, a gate means having first and second inputs, and a first input to the gate means, to activate the load circuit. A control circuit for outputting a corresponding control signal and a second switch means connected to the second input of the gate means and interlocking with the opening and closing of the lid are provided, and the output of the bistable memory holding circuit is provided. Input to the power circuit, the negative Small information processing apparatus and controls the power supply to the circuit.