JP2606182B2 - Information processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to an information processing system, and more particularly to an information processing system including an external device and a microcomputer built-in unit connected to the external device and communicating with the external device.

[0002]

2. Description of the Related Art In recent years, as an external storage device of an information processing device such as a personal computer, an OA device, and an FA device,
An IC card provided with a random access memory (RAM) and a battery for backing up the RAM is provided.

[0003]

When the above-mentioned IC card is connected to an information processing apparatus such as a personal computer in order to suppress the consumption of backup power, the IC card is used for backup or information processing from the information processing apparatus. I'm trying to get power. In such an information processing system, when the connection with the information processing device is released while the information processing is being performed in the IC card, the power supply from the information processing device is temporarily cut off,
There is a possibility that the processing in the C card may be terminated without being completed, or the data in the IC card may be damaged.

[0004]

SUMMARY OF THE INVENTION In view of the above circumstances, the present invention relates to an information processing system including an external device and a microcomputer built-in unit connected to the external device and communicating with the external device. An external device having a power supply terminal for supplying one power supply to the microcomputer built-in unit; a power supply terminal connected to the power supply terminal for receiving power supply from the external device; and supplying power to the microcomputer A built-in microcomputer unit having a second power supply for supplying a first power to the microcomputer when the external device is connected to the built-in microcomputer unit; When power is not supplied from one power supply, a power supply control means for controlling power supply to the microcomputer from the second power supply in the microcomputer built-in unit. Reset means for resetting the microcomputer when the first power supply from the external device to the microcomputer built-in unit is started and when the supply is released, and when the microcomputer is performing information processing, the first power supply is supplied to the microcomputer built-in unit. A reset prohibiting unit for prohibiting the reset of the microcomputer by the reset unit until the power supply is started and the power supply is canceled is terminated.

[0005]

1 and 2 are an external view of a memory sheet (1) and an exploded view showing its structure.

In FIG. 2, (2) is a flexible board on which a random access memory (hereinafter referred to as RAM), a control microprocessor (hereinafter referred to as MPU) and the like are mounted, and (3) is mainly a memory of the RAM. This is a paper battery for raising the inside. The flexible board (2) and the battery (3) are positioned in a state of being superimposed on a hole (4a) formed in the structure (4), and are sandwiched between protective sheets (5) and (6). The sheet (1) is formed.

Further, two holes (7), (2), (3), (3) are provided at the same positions of the ends of the protection sheets (5), (6) so that the memory sheet (1) can be stored in a mold sheet storage device (100) described later. (8) is drilled in each case, and rectangular holes (4b) and (4c) are drilled in the end of the structure (4) corresponding to the positions of the holes (7) and (8). ing. Further, the holes (4b) and (4c) have the protective sheet (5),
I / O terminals (11), (12) having holes (9), (10) of the same diameter as holes (7), (8) provided in (6).
Is provided. These input / output terminals (11) and (12)
Is connected to an external power supply terminal of a binder type sheet storage device (100) described later,
M for receiving the backup power supply (1
3) and (14), and a light receiving element (15) and a light emitting element (16) for performing optical communication with an external device. The light emitting surface (15a) and the light emitting element (15) of the light receiving element (15) are provided. 1
The light emitting surface (16a) of 6) is the input / output element (11),
It is located on the inner surface of each of the holes (9) and (10) formed in (12) (see FIG. 3).

Further, a hole (30) is provided between the holes (7) and (8) of the protective sheets (5) and (6), and the structure corresponding to the position of the hole (30) is provided. (4) is provided with an optical sensor (31), which detects external light and outputs a signal for switching the operation state of the memory sheet.

FIG. 4 is a block diagram showing a circuit configuration in the memory sheet (1). The RAM (22) is connected to the MPU (22) via the internal path (21).
The standby state is entered by the P-SAVE signal from U (22). Further, the MPU (22) has a built-in serial interface, and the light receiving element (15) for optical communication is provided.
Further, communication with an external device is possible by the light emitting element (16). Reference numeral (23) denotes a power supply control unit for the memory sheet (1), which switches between power from an external power supply supplied through the electrodes (13) and (14) and power from the built-in battery (3), and an MPU. A RESET signal is output to (22), and a C-BUSY signal is input from MPU (22).

Here, the RESET signal is an MPU (2
This is a signal for resetting 2). The reset is applied to the "M" level MPU (22). Also C-BUS
The Y signal is a signal indicating the state of the MPU (22),
The LPU level indicates that the MPU (22) is in operation. Further, the MPU (22) is also output from the optical sensor (31).
When the optical sensor (31) detects external light, the OPEN signal goes to the “L” level, and the MPU (22) sets the above-described P-SAVE signal to “L”. Activate the RAM (20) to make it accessible.

FIG. 5 is a circuit diagram of the power supply control unit (23), and FIG. 6 is a timing chart of its operation. The memory sheet (1) is not connected to another power supply device, the memory sheet (1) is independent, and external power is
When the voltage is not supplied to the electrodes (1) and (12) (to to t1 in FIG. 6), the voltage at the point A changes to the Zener diode (Z
The voltage is lower than the predetermined voltage (VZ) set in D), the transistor (Q) does not operate, the potential at the point B in the drawing becomes the “L” level, and the NAND gate (G2) passes through the inverter (G1). Input terminal "H" level signal is input. At this time, the signal is input to the other input terminal of the NAND gate (G2). If the C-BUSY signal is at "H" level, that is, if the MPU (22) is not performing internal processing, the RESET signal output from the output terminal of the NAND gate (G2) will be at "L" level, and
(22) is reset and the MPU (22) enters a standby state.

The memory sheet (1) is connected to an external device, external power is supplied to the electrodes (13) and (14), and the voltage at point A is a predetermined voltage (VZ) set by a Zener diode (ZD). (T1 to t5 in FIG. 6), the transistor (Q) is turned on, the potential at the point B becomes "H" level, and the NAND gate (G) is connected via the inverter (G1).
2) An “L” level signal is input to the input terminal
The RESET signal from the output terminal of the ND gate (G2) becomes “H” level, and the MPU (22) starts operating. At this time, power is supplied from the external device, and power of the battery (3) is not consumed.

When the power supply from the external device is turned off while the MPU (22) is operating (t5 to t6 in FIG. 6).
Since a signal (C-BUSY = “L”) indicating that the MPU (22) is processing is input to the input terminal of the NAND gate (G2) in advance,
U (22) is prevented from being reset.

In such a power supply control circuit, (G
1) is a capacitor for preventing malfunction when the electrodes (13) and (14) are in poor contact with the external power supply terminal, and (R1) is for rapid charging of the capacitor (C1) to prevent malfunction of the external device. It is the resistance to do.

FIG. 7 is a processing flowchart of the MPU (22). In step (S1), the RESET signal is connected to the external device, and the RESET signal goes to “H” level.
When the reset of (22) is released, the internal initialization of the MPU (22) is performed, and the P-SA is initialized in step (S2).
The VE signal is set to "H" level, and the RAM (20) is set in a standby state.

In step (S3), the OPEN signal is "
It is determined whether or not the OPEN signal is "L" level, that is, whether or not the optical sensor (31) detects external light.
When the signal is at the level (when the light sensor (31) detects external light), the process proceeds to step (S4), and the OPEN signal becomes "H".
When it is at the level (when the optical sensor (31) does not detect external light), the process returns to step (S2) again. Step (S4)
Then, the P-SAVE signal is set to “L” level, and the RAM
(20) is activated to make it accessible. Proceed to step (S5). In step (S5), if a command is input, the process proceeds to step (S6). If no command is input, the process returns to step (S3). Step (S6)
Then, the C-BUSY signal is set to “L” level and the MPU
The reset of (22) is prohibited. In step (S7), the command is analyzed, and the inputted command is stored in the RAM.
(20) If the command is a read (READ) command, the process proceeds to step (S8). If the command is a write (WRITE) command, the process proceeds to step (S9). Do.

When the processing of the command is completed, step (S)
In 10), the C-BUSY signal is set to the “H” level to cancel the reset prohibition of the MPU (22), and then the process returns to step (S3). Next, the binder type sheet storage device (100) will be described with reference to FIG. FIG. 8 is a perspective view of the binder type sheet storage device (100).

The main body (101) having a personal computer function as an additional function has a flat rectangular shape as a whole, and has a plate-like cover member (10) as described later.
2) A liquid crystal display (1) which is fixed on the top and displays information read from the memory sheet (1) in the center thereof.
03) and an operation section (104) used for reading information stored in the memory sheet (1) and writing information in the memory sheet (1).

The cover member (102) has a bottom portion (102a) fixed to the main body (101) and a right side portion (102).
b), the upper surface (10) covering the upper surface of the main body (101).
2c) and a left side (102d) of four plate-shaped members, each of which has a surface, such as a book-shaped binder used for storing documents or a photo album. Is covered with a core material and a flexible member such as vinyl resin, and adjacent surfaces are joined to each other by the flexible member so that they can be bent together.

The right side portion (1) of the cover member (102)
02b) On the inner surface, a binding member (1) for binding the memory sheet (1), performing optical communication with the memory sheet (1), and supplying power to the memory sheet (1).
05) and (106) are provided. Binding part (1
As shown in FIG. 9, reference numerals 05) and (106) denote translucent flexible members, at the base of which, like the memory sheet (1), a light emitting element (107) for optical communication and a light receiving element. The element (108) is built in.

A part of the surface is formed of a conductive electrode (10).
9) and (110) to supply power to the memory sheet (1).

FIG. 10 is a block diagram showing a circuit configuration in the binder type sheet storage device (100). The control unit mainly includes an MPU (111), a memory (112) for storing programs and data, and an input port (1) for key input.
13), LCD controller for controlling the display unit (11
4) A communication control unit (115) for exchanging data with an auxiliary storage device such as the memory sheet (1) described above, and a battery (116) for driving them.

The communication control section (115) performs optical serial communication, and is connected to a light emitting element (107) for transmission and a light receiving element (108) for reception. Light for communication is transmitted between the memory sheet (1) and the binder type personal computer (100) by binding members (105) and (106) made of a translucent member having a memory sheet holding function. The electrodes (109) and (110) are connected to a battery (116) built in the main body (101) and supply power to the memory sheet (1).

In the drawing, (R100) and (D100) are resistors and diodes for protecting the battery (116).

The binder type storage device (10
In FIG. 11, the memory sheet (1) is stored and stored as shown in FIG.
0) are connected to the electrodes (109) and (110) of the memory sheet (1) and the electrodes (13) and (14) of the memory sheet (1).
The light emitting element (107) includes the light emitting element (16) and the light receiving element (15) of the memory sheet (1) and the binding member (10).
5) and (106), and the sheet storage device (100) and the memory sheet (1) enter an optically communicable state. At this time, the RAM (20) in the memory sheet (1) is backed up by the power supplied from the binder type sheet storage device (100).

When performing information processing on the memory sheet (1) with the memory sheet (1) stored therein, the cover member (102) of the storage device (100) is opened and the light sensor of the memory sheet (1) is opened. When external light is detected, the MPU
The OPEN signal input to (22) becomes “L” level. When the "L" level OPEN signal is input to the MPU (22), the P-SAVE signal is output at the "L" level from the MPU (22) in the RAM (20),
(20) is activated and becomes accessible. afterwards,
The operator operates the operation unit (10) of the sheet storage device (100).
By operating 4), information in the RAM (20) is read or information is written in the RAM (20). When the above information processing operation is completed and the cover member (102) is closed, the optical sensor (31) of the memory sheet (1) stops detecting external light, and the OPEN signal becomes "1".
At this time, the P-SAVE signal becomes "H", and the RAM (20) enters a standby state.
0) during the information processing (during memory access), the cover member (10) of the sheet storage device (100).
Even if the light is blocked due to the closing of 2) or a document or the like placed on the optical sensor (31), as shown in the flowchart of FIG. Since 20) does not enter the standby state,
No malfunction will occur.

As is apparent from the above description, in the memory sheet storage system shown in the present embodiment, the memory sheet (1) is stored in the memory sheet storage device (100) so that the RAM in the memory sheet is stored. Since the backup of (20) is performed by the power of the storage device (100), the power consumption of the backup battery (3) built in the memory sheet (1) can be reduced, and the memory sheet can be stored during storage. There is no loss of information in the RAM (20) due to the expiration of the life of the backup battery (3).

In this embodiment, since the memory sheet storage device (100) itself has an information processing function, it is possible to perform information processing on information stored in the memory sheet (1) in the storage state. .

Furthermore, in this embodiment, when the cover member (102) is opened, the optical sensor (31) of the memory sheet (1) detects external light and the R of the memory sheet (1) is detected.
The AM (20) is activated and becomes accessible, preparing for information processing by the operator, and when the cover member (102) is closed, the optical sensor (31) does not detect light, and the RAM (20) enters a standby state. So that R
The special operation of the operator for switching the operation state of the AM (20) becomes unnecessary, and the usability is improved.

In this embodiment, when a plurality of memory sheets are stored in the storage device, and when information processing is to be performed on a memory sheet other than the uppermost memory sheet, the memory sheet on which information processing is desired is performed each time. The sheet must be rebound so that it is at the top, and the light sensor on the memory sheet must detect external light. As shown in FIG. 12, the memory sheet (1)
Operation unit (1104) and display unit (1
If 103) is provided, even if the memory sheet on which information processing is to be performed is not the top one, opening the memory sheet (1) allows the light sensor (31) of the target memory sheet to emit external light. As a result, the RAM is activated and information processing can be performed.

[0031]

As is apparent from the above description, according to the present invention, while the microcomputer in the microcomputer built-in unit which can be connected to the external device is performing information processing, the connection from the external device to the microcomputer built-in unit is performed. When the power supply starts and the power supply is released, the reset of the microcomputer is prohibited until the information processing of the microcomputer ends.
Even if the power is switched while processing information in the built-in microcomputer unit, processing in the built-in microcomputer unit may be terminated incompletely, or data in the built-in microcomputer unit may be damaged. Rolling can be prevented.

[Brief description of the drawings]

FIG. 1 is an external view of a memory sheet.

FIG. 2 is an exploded view showing a structure of a memory sheet.

FIG. 3 is a perspective view of an input / output terminal of a memory sheet.

FIG. 4 is a block diagram showing a circuit configuration in a memory sheet;

FIG. 5 is a circuit diagram of a power supply control unit of a memory sheet;

FIG. 6 is a timing chart of the operation of the power supply control unit.

FIG. 7 is a processing flowchart of a microprocessor in a memory sheet.

FIG. 8 is a perspective view of a binder type sheet storage device.

FIG. 9 is a perspective view of a binding member of the binder type sheet storage device.

FIG. 10 is a block diagram showing a circuit configuration in a binder type sheet storage device.

FIG. 11 is a diagram showing a state when a memory sheet is stored in a binder type power supply device.

FIG. 12 is a perspective view showing another embodiment of the sheet storage device.

[Explanation of symbols]

 1, 1 ': Memory sheet 20: Random access memory 31: Optical sensor 100, 1000: Sheet storage device 102: Cover member

Claims (1)

(57) [Claims] An information processing system comprising an external device and a microcomputer built-in unit connected to the external device and communicating with the external device, a first power supply and a power supply for supplying the first power supply to the microcomputer built-in unit. An external device having a supply terminal; a power supply terminal connected to the power supply terminal for receiving power supply from the external device; and a microcomputer built-in unit having a second power supply for supplying power to the microcomputer. When the external device and the microcomputer built-in unit are connected, the first power is supplied to the microcomputer. When the microcomputer built-in unit is not supplied with power from the first power source of the external device, the microcomputer is provided. Power supply control means for controlling power supply to the microcomputer from the second power supply in the built-in unit; and a microcomputer built-in unit from an external device. Reset means for resetting the microcomputer when the first power supply to the microcomputer is started and when the supply is released, and start of power supply from the first power supply to the microcomputer built-in unit while the microcomputer is performing information processing, and power supply An information processing system, comprising: reset prohibiting means for prohibiting resetting of the microcomputer by reset means until the information processing of the microcomputer is completed when the cancellation is performed.