JPH06348371A - Information processor - Google Patents

Abstract

PURPOSE:To provide the information processor which dispenses with a complicated operation for supplying a power source, at the time of use in a coupled state and in a separated state of a main body and a slave machine, and can prevent an ignition accident at the time of fault of a device, etc., by a simple constitution. CONSTITUTION:A main body A and a slave machine B are provided so that they can be installed and coupled to each other. In the main body A, and on the opposed side face of the slave machine B, a DC jack 623 for connecting an external power source, and a DC jack 620 for connecting the external power source are provided, respectively. In the case plugs of the external power source are connected to both of the DC jack 623 of the main body A and the DC jack 620 of the slave machine B, both the plugs interfere with each other and the installation of the main body A and the slave machine B is obstructed, and this processor is constituted so that to the main body A or the slave machine B whose connection to the external power source is obstructed in such a manner, a power sourse is supplied through a leaf spring and a reinforcing plate from the slave machine B or the main body A connected to the external power source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus such as a personal computer, and more particularly to an information processing apparatus which can be used by connecting a main body and a slave unit to each other and by separating the main unit from the slave unit and carrying it.

[0002]

2. Description of the Related Art In recent years, information processing devices such as personal computers and word processors have been made smaller and lighter, and notebook computers,
Portable information processing devices such as handy terminals have come to be used. In this type of portable information processing device, it is desirable that it can be used by being incorporated in an online system or a network system with other information processing devices without being limited in function and performance due to the reduction in size and weight.

As described above, in order to prevent the function and performance from being limited even if the size and weight are reduced, the information processing apparatus is composed of a main body and a slave unit, and the main unit and the slave unit are connected to each other as necessary. There is proposed a separation type information processing apparatus which can be used as a main body and a slave unit while being separated from each other. In this separation type information processing device, the main body is
It is composed of CPU, battery, backup memory, keyboard, display, etc. and has simple information data processing and display functions. The slave unit is a storage medium such as a floppy disk or a large capacity hard disk, RS232C.
It is equipped with standardized communication means such as, a network I / F, etc., and is used by carrying the main body when going out. Then, the main body is brought back to the place where the child machine is located, and connected to the child machine for data input, analysis processing, printout, network communication, and the like.

On the other hand, in this type of information processing apparatus, a pen-based computer using a pen as an input means has started to be used in recent years in place of the keyboard, which is an obstacle to size reduction and weight reduction.
A digitizer for input is provided on the display surface such as LCD (liquid crystal display), and the locus input by the pen is displayed on the display screen, and it is as if the character is written on the paper by the pen to input to the computer. .

[0005]

In the conventional separation type information processing apparatus, when the main body and the slave unit are mounted on each other in a combined state, or in the separated state, power is supplied to the main body and the slave unit. The switching is complicated and not always easy for the operator to operate, and the structure of the protective circuit for safety measures to prevent accidents such as ignition and smoke due to the power supply power when the device fails becomes complicated. Was also a cause of the increase in the manufacturing cost of the device.

The present invention has been made in view of the current state of the information processing apparatus as described above, and an object of the present invention is to supply a power source in a complicated manner when the main body and the slave unit are used in a combined state and a separated state. An object of the present invention is to provide an information processing device that does not require a switching operation and can prevent a fire accident or the like when the device fails with a simple configuration.

[0007]

In order to achieve the above object, the present invention provides information input means, display means, first signal transfer means for transferring signals to and from the outside, and connection with an external power source. A main unit having a first connecting unit, a second signal transmitting / receiving unit for transmitting / receiving a signal to / from the outside, and a slave unit having a second connecting unit for connecting to an external power source, the main unit and the slave unit. An information processing device, comprising: mounting means for mounting and coupling each other, wherein the main body and the child device are used in a state of being coupled to each other by the mounting means or in a state of being separated from each other, the main body and the It is characterized in that it has a blocking means for blocking the connection with the external power supply by one of the first connecting means and the second connecting means when the slave unit is in a coupled state. Further, when the main body and the slave unit are separated from each other, the main unit or the slave unit in which the connection to the external power source from the slave unit or the main unit connected to the external power source is blocked. It is characterized in that each of them has a power supply means for supplying power to.

[0008]

According to the above construction, when the main body and the slave unit are connected to each other by the first mounting means and the second mounting means, the first connecting means and the second connecting means are connected by the blocking means. The connection of one of the connecting means with the external power source is blocked. Then, power is supplied by the power supply unit from the slave unit or main body connected to the external power source by the power supply unit to the main unit or slave unit whose connection to the external power source is blocked.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the accompanying drawings. In this embodiment, a main body that can be carried and used, and this main body and a detachable cordless handset,
In the coupled state of the main body and the slave unit, an external power source is connected to one of the main unit and the slave unit, and the main unit or the slave unit connected to the external power source supplies power to the slave unit or the main unit that is not connected to the external power source. Is done.

[Main Body] First, referring to FIG. 1 to FIG.
The main body will be described. Here, FIG. 1 is a perspective view showing the structure of the main body, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a bottom view of the main body, FIG. 4 is a sectional view taken along the line BB of FIG. 3, and FIG. 3 C-C
FIG.

As shown in FIG. 1, the main body A has an upper case 501, a middle case 502, and a lower case 503 made of a resin material, which are fixed to each other by screws or elastic hooks to form a substantially rectangular parallelepiped. A rectangular opening is provided in the center of the upper case 501, and the digitizer 16 is provided in the opening. A liquid crystal display 19 (FIG. 2) is provided below the digitizer 16, and a holder 506 for the input pen 15, a main switch, and a liquid crystal display 19 are provided on a side surface in the longitudinal direction formed by the middle case 502. Contrast adjustment knob, I
A C card connector and a connector for the input pen 15 (neither shown) are provided. The connector of the input pen 5 is invisible between the holder 506 and the side surface of the middle case 502, and the input pen 15 and the connector are connected by a cord 509. The cord 509 is the middle case 502 and the holder 50.
It is designed so that it can be wrapped around the space between 6 and stored. Further, on the end face in the longitudinal direction, there are provided elongated hole concave guide portions 513a and 513b forming a part of the first mounting means, and a DC jack 623 connected to an external power source.

In the middle case 502, as shown in FIG.
A liquid crystal display 19 and a digitizer 16 are mounted in an overlapping manner, and a printed circuit board 510 is mounted below the liquid crystal display 19, and the printed circuit board 510 includes a CPU, a memory, a liquid crystal display controller,
It is equipped with a digitizer control unit and power supply circuit.

As shown in FIG. 3, the bottom surface of the lower case 503 is provided with a recess 511 and hemispherical projections 517a to 517d which form part of the first mounting means, and the center of the bottom surface. A plurality of windows 514a for optical communication are provided in the longitudinal direction.
~ 514d has the code 50 of the input pen 15 at the four corners.
9 and the groove portions 515a to 515d and the rubber foot 51.
6a to 516d are provided. This rubber foot 516a ~
The height of 516d is higher than that of the convex portions 517a to 517d. FIG. 4 showing the BB cross section of FIG. 3 and the same C-
As shown in FIG. 5 showing a C cross section, an opening 511a is provided in the recess 511, and the leaf spring 5 is provided in the opening 511a.
18a and an electrode 35 having an electrode pin 35a are provided, and a mounting detection switch (not shown) is provided in the opening 511a.

On the other hand, in this embodiment, the ultrasonic digitizer 16 is used, the input pen 15 has a built-in vibrator, and the digitizer 16 has a glass plate or the like for transmitting the vibration input by the input pen 15. Vibration transmission plate,
A plurality of vibration sensors adhered or pressure-bonded to the vibration transmission plate, a vibration damping material provided near the periphery of the transmission plate for damping vibration, a detection circuit for detecting a signal from the vibration sensor and measuring a transmission time, and the like. It is provided. This digitizer 16
Calculates the distance between the input pen 15 and each sensor from the transmission time and the known transmission speed, and detects the position of the input pen 15. Further, since the input surface of the digitizer 16 is formed of a transparent glass plate, the liquid crystal display 19 located therebelow is extremely easy to see.

[Slave Unit] Next, the slave unit will be described with reference to FIGS. 6 to 9. 6 is a perspective view of the slave unit, FIG. 7 is a sectional view taken along the line DD of FIG. 6, FIG. 8 is a sectional view taken along the line EE of FIG.
FIG. 9 is a sectional view taken along line FF of FIG.

In the child device B, a lower case 602 of a resin material is fixed to the bottom surface of an upper case 601 of a resin material having an elongated convex portion 601a on one side and having a substantially L-shaped cross section. The length in the longitudinal direction and the width in the longitudinal direction of the main body A are substantially equal to each other, and the upper surface 601b adjacent to the convex portion 601a is provided with a hook portion 603 forming a part of the second mounting means and a locking knob 604. A plurality of windows 605a to 605d for optical communication are provided substantially in the center of the upper surface 601b. The locking knob 6
Reference numeral 04 is biased upward by a spring (not shown), and when a release button 606 provided on the convex portion 601a is pushed in, it is moved downward to a position of the upper surface 601b by a rotary slide mechanism (not shown). There is. In addition, the convex portion 601a
Light emitting diodes 607a and 607b are provided on the upper surface of the device as power source and floppy disk operation indicators.

Further, guide pins 608a and 608b are fixed to the inner surface of the convex portion 601a, and the guide pin 6
An operation pin 609 of a mounting detection switch, which will be described later, is provided in the vicinity of 08a. Further, on the inner side surface of the convex portion 601a, a DC jack 620 that receives power from an external power source is provided at the bottom of a space portion 619 described later. An insertion opening 610a of the floppy disk 610 is provided on one end face in the longitudinal direction of the child device, and an I / O port, a network I / F, a keyboard connector, a DC jack, etc. (not shown) are attached to the opposite end face. There is.

As shown in FIG. 7, the upper case 601 includes
A printed circuit board 611 on which a CPU, a memory, an optical communication means, etc. are mounted is attached, and a lower case 602 accommodates a floppy disk 610. Rubber feet 612a and 612b are provided on the bottom surface of the child device B and the outer surface of the convex portion 601a for preventing slippage when the main body A and the child device B are attached and coupled, and further on the outer surface of the convex portion 601a. Is provided with a stand 614 rotatable by a hinge. Also,
An inclined surface 602a is formed on one side of the bottom surface of the handset B, and when the handset A is attached to the body A and placed on a horizontal surface such as a desk, the stand 614 of the handset B or the rubber feet 516a of the body A. Any one of ˜516d is arranged so that the back side is raised without slipping. Further, as shown in FIG. 8 which is a cross section taken along the line EE of FIG. 6 and FIG. 9 which is a cross section taken along the line FF, a reinforcing plate 613 made of a steel plate and a spring are axially urged inside the hook portion 603. An electrode 119 provided with the formed electrode pin 119a.

Now, with reference to FIGS. 10 (a) to 10 (d), a connection state and a detaching operation method by mounting the main body A and the slave unit B of this embodiment will be described. Here, FIG.
(D) is explanatory drawing of mounting operation | movement of a main body and a subunit | mobile_unit.

[Connected state of main body and slave unit] FIG. 10 (d)
FIG. 4 is a diagram showing a connected state of the main body and the child device. In this completely connected state, a predetermined distance is provided between one longitudinal end face (back end face) of the main body A and the facing inner surface of the convex portion 601a of the child device. Is formed, and the main body A and the child device B are aligned in the width direction without any deviation. In this combined state, the guide portion 513 of the main body A is
a and 513b, the guide pins 608a, 60 of the child device B
8b are respectively inserted into the recesses 511 of the main body A and the slave unit B
The hook portion 603 is located, and a part of the hook portion 603 is inserted into the opening 511a. Also, the hook portion 60
The reinforcing plate 613 of No. 3 is biased upward by the leaf spring 518a to mount and fix the main body A and the slave B to each other, and the reinforcing plate 613 functions as a contact point for connecting the electric circuits of the main body A and the slave B to each other. Also plays.

In this combined state, any one of the plurality of protrusions 517a to 517d on the bottom surface of the main body A and the upper surface 601b of the upper case 601 of the child device B are in contact with each other, and the main body A and the child device B are arranged in the thickness direction. It is connected with little backlash. In addition, the bottom surfaces of the guide portions 513a and 513b and the guide pin 608
a, 608b, and the convex portion 6 of the child device of the concave portion 511.
The side surface on the 01a side (back side) and the convex portion 601 of the hook portion 603
Due to the engagement with the side surface on the a side, the main body A and the child device B are mounted and coupled in the depth direction (longitudinal direction of the main body A) in a state with less backlash. Further, in the coupled state, the surface inside the opening 511a of the recess 511 on the bottom surface of the main body A and the hook portion 6 of the child device B.
The leading end of the guide pin 603a comes into contact with the guide pin 513a, and the R-shaped one end face of the guide part 513a comes into contact with the side face of the guide pin 608a. In this state, the right side surface (FIG. 8) of the locking knob 604 of the handset B is located in the recess 511 on the bottom surface of the main body A with a predetermined gap from the right side surface (FIG. 4) of the recess 511. Body A
And the child device B are connected to each other in the left-right direction (width direction of the main body A) with less play.

In the connected state in which the main body A and the slave B are mounted, the mounting detection switch in the opening 511a of the main body A is pushed by a part of the hook portion 603 of the slave to operate, and The operation pin 609 of B is the child device B of the main body A.
Is pushed in by the side surface of the convex portion 601a side, and the attachment detection switch of the child device B is activated. Further, the windows 514a to 514d for optical communication on the bottom surface of the main body A and the window 60 for optical communication of the slave unit B.
5a to 605d correspond to each other. further,
The electrode pin 35a of the main body A and the electrode pin 119a of the slave B contact each other with a predetermined spring pressure, and serve as an electrical contact for connecting the respective electric circuits of the main body A and the slave B to each other. Then, when the main body A and the child device B, which are attached to each other and are in a coupled state, are placed on a horizontal plane such as a desk, the rubber feet 612a of the child device B are placed.
As a result, the input surface of the main body A forms a predetermined angle and is stably arranged.

[Mounting of main unit and slave unit] The mounting operation of the main unit A and the slave unit B will be described. As shown in FIG.
When the main body A is brought close to the slave B from above, and the main body A is placed on the upper surface of the slave B as shown in FIG. 10B, the slave B is separated from the main body A by a predetermined distance from the mounting position. It is displaced in the left-right (width) direction of the main body A by d, and the end surface on the back side of the main body A and the inner side surface of the convex portion 601a of the slave B are separated from the mounting position by a predetermined distance. At this time, the guide pin 608
Although a and 608b are not inserted into the guide portions 513a and 513b, the hook portion 603 of the child device is in the recess 511 on the bottom surface of the main body A. From this state, as shown in FIG. 10B, the main body A is moved toward the slave unit B by an arrow so that the rear end face of the main unit A and the inner side surface of the convex portion 601a of the slave unit B are brought into contact with each other. Moving in the direction
The guide pins 608a and 608b are the guide portions 513a and 5
13b is inserted. At this time, the operation pin 609 is located in the guide portion 513a and is in a free state, and the slave unit B
The mounting detection switch of does not work. Next, FIG. 10 (c)
As shown in FIG. 7, when the main body A and the child device B are relatively moved in the left-right direction indicated by the arrow, the surface inside the opening 511a of the concave portion 511 and the tip portion of the hook portion 603 of the child device B come into contact with each other, The R-shaped end surface of the guide portion 513a and the side surface of the guide pin 608a come into contact with each other, and the main body A and the child device B are positioned in the left-right direction. By this operation, the hook portion 603 becomes the concave portion 511.
The locking knob 604 is inserted into the opening 511a of the main body A and is once pushed down on the bottom surface of the main body A, then becomes free at the position of the recess 511 and is urged upward. In this way, as shown in FIG. 10D, the main body A and the child device B are attached to each other and brought into a coupled state.

[Separation Operation] In order to release the attachment of the main unit A and the slave unit B to the separated state, the release button 606 of the convex portion 601a of the slave unit B is pushed down to move the locking knob 604 downward. Then, in this state, the main body A and the child device B are relatively moved in the left-right direction opposite to the mounting state, and the guide portion 51
When the main body A and the child device B are moved in the depth direction so that the guide pins 608a and 608b are removed from the 3a and 513b, the main body A and the child device b are separated from each other. In the attachment / detachment operation described above, when the operator holds the convex portion 601a of the child device B and performs the attachment / detachment operation, it is easy to attach a guide, such as removal of the guide pins 608a and 608b from the guide portions 513a and 513b. The operation can be performed easily.

11 (a) and 11 (b) are explanatory views of a connected state in which the main body and the child device are attached to each other.
11A is an explanatory diagram when an external power source is connected to the main body, and FIG. 11B is an explanatory diagram when an external power source is connected to the child device. As shown in FIG. 1, the longitudinal end face 1 of the main body A
A is a surface facing the slave in a coupled state, and a DC jack 623 that receives power from an external power supply at this end surface 1A.
Is provided. In the state where the external power source plug 621 is connected to the DC jack 623, the plug 621 protrudes from the end surface 1A of the main body A as shown in FIG. For space 6
19 is formed.

Further, as shown in FIG. 11B, the DC jack 620 (see FIG. 6) provided on the surface of the child device B facing the DC jack 623 of the main body A in the coupled state is provided with the plug 621 of the external power source. When connected, the plug 621 will move to the space 61.
It is stored in 9. Therefore, the DC jack 62 of the main body A
When the plug 621 of the external power source is not connected to 3, the main body A and the slave unit B can be smoothly mounted and brought into a coupled state. However, the DC jack 62 of the main body A
3 is connected to the plug 621 of the external power source, and at the same time, the slave unit B
In the state where the external power plug 621 is also connected to the DC jack 620, the main body A side power plug 621 and the slave B side power plug 621 interfere with each other, and the main body A and the slave B are attached to each other. Therefore, it is not possible to put them in a combined state.

[Electric Circuit of Main Body] Next, the electric circuit portion of the main body of this embodiment will be described with reference to FIG. Here, FIG. 12 is a block diagram showing a configuration of an electric circuit of the main body.

As shown in the figure, in the present embodiment, a 32-bit CPU 10 (for example, Intel Corporation 180386SL) that executes a program to perform arithmetic operations and I / O control and control the operation of the entire device is connected via a bus. A peripheral chipset 11 that performs necessary I / O control for peripheral devices in cooperation with the main memory, high-speed cache memory, memory 12 including R0M, and CPU 10.
(Operating system) Hard disk (HD that stores application software, user data, etc.
D) 13 is connected. Also, the peripheral chipset 11
A mounting detection switch 29 is connected to the. Similarly,
A digitizer control unit 14 and a liquid crystal display controller 17 are connected to the CPU 10 via a bus, an input pen 15 and a digitizer 16 are connected to the digitizer control unit 14, and the liquid crystal display controller 17 is connected to the liquid crystal display controller 17. The liquid crystal display 19 and the VRAM 18 are connected. The digitizer control unit 14 controls the digitizer 16 in accordance with the locus traced by the input pen 15, and the liquid crystal display controller 17 displays the input data and the processed data by the input pen 15 on the liquid crystal display 19.

In this case, the liquid crystal display controller 17 sequentially accesses the display data from the VRAM 18, transfers the data to the liquid crystal display 19 in consideration of gradation and the like, and also accesses the VRAM 18 from the CPU 10 and the liquid crystal display 19. Bus control is performed so that it does not conflict with the data access of. Further, the liquid crystal display controller 17 can also cause the data stored in the VRAM 18 to perform a logical operation with predetermined data.

A backlight 21 is arranged on the lower surface of the liquid crystal display 19, and a driver 20 is connected to the backlight 21. From the backlight 21 driven by the driver 20, the liquid crystal display 19 is a dark room in the room. But as you can see, the illumination light is emitted.

Similarly, a card controller 22 and a communication controller 24 are connected to the CPU 10 via a bus, a card interface 23 is connected to the card controller 22, and the communication controller 24 has an optical driver receiver 25, 26 is connected to the optical driver receivers 25 and 26, and light emitting diodes and photodiodes 27 and 28 are connected to the optical driver receivers 25 and 26, respectively.

The card interface 23 includes a ROM card for adding programs and data, an expansion memory and a RAM card for backup, a flash card for backup and data addition, and a fax data modem for data communication via a telephone line. A card and a LAN card that can be connected to the network can be installed. The card interface 23 standard is JEID
The 68-pin standard defined by A / PCMCIA is adopted,
The card controller 22 writes data from the CPU 10 to the card and reads data from the card.

The communication controller 24 controls communication of the SDLC system (IBM standard), and transmits / receives data of a keyboard, a floppy disk, and a device of Centronics specifications belonging to the node of the slave B on the A channel. In the B channel, network communication such as local talk is directly performed via the handset B. Here, the communication controller 24, the optical driver receivers 25 and 26, and the light emitting diodes and the photodiodes 27 and 28 form a first signal transfer unit C1.

Similarly, the plane I / O 30 is connected to the CPU 10 via a bus, and the plane I / O 30 is connected.
Is connected to the DC-DC converter 32 via the plane switch 31. This DC-DC converter 32
Is connected to the other pole of the battery 33 whose one pole is grounded, and an external power source 624 is connectable via the jack 623. Both poles of the battery 33 are connected to the slave unit B. Terminals 35, 518a are provided. The DC-DC converter 32 includes an external power source 624, a battery 33 or a terminal 3
The power supply voltage supplied from 5, 518a is converted into the voltage used in the main body A. This power supply circuit prevents current from flowing from the internal power supply to the external power supply 624, and
A diode 625 for protecting 4 is provided as a backflow prevention means.

FIG. 13 is a block diagram of the power supply circuit part. From the DC-DC converter 32, + 12V, +5.
Three types of voltages of V and -24V are output, the voltage of + 5V is constantly supplied to the CPU memory plane 36, and the power supply to each plane is controlled by the I / O 30 for the plane. This control is executed by the CPU 10 writing the data “1” or “0” in the mapped power plane I / O 30 so that the plane switch 31 performs the corresponding ON / OFF operation. .
As the plane switch 31, an electromagnetic relay, a reed switch, or a semiconductor switch of FET can be used. As these planes, the CPU memory plane 36 (CPU 10, peripheral chipset 11, memory unit 1
2, plane I / O 30), backlight plane 3
7 (driver 20), liquid crystal display control plane 3
8 (Liquid crystal display controller 17, VRAM1
8), hard disk plane 39 (hard disk 1
3), digitizer plane 40 (digitizer control unit 14, digitizer 16, input pen 15), optical communication plane 41 (communication controller 24, optical driver receivers 25 and 26, light emitting diode and photodiode 2)
7, 28) and a liquid crystal driving plane 42 (plane for generating a divided voltage for driving the liquid crystal display 19) are provided.

[Electric Circuit of Handset] Next, the electric circuit portion of the handset of this embodiment will be described with reference to FIG.
Here, FIG. 14 is a block diagram showing the configuration of the electric circuit of the slave unit.

As shown in FIG. 15, a memory unit 102, a peripheral chip set 101 and a communication controller 110 are connected to a CPU 100 via a bus, and optical driver receivers 111 and 112 are connected to the communication controller 110. The light driver receivers 111 and 112 include light emitting diodes and photodiodes 113 and 11, respectively.
4 are connected to each other, and the optical driver receiver 112
A network interface 115 is connected to the network interface 115, and a network connector 116 is connected to the network interface 115. Here, the communication controller 110, the optical driver receivers 111 and 112,
Light emitting diodes and photodiodes 113, 114,
The network interface 115 and the network connector 116 form a second signal transfer unit.

Similarly, the CPU 100 is connected to the 3.5-inch floppy drive unit 104 via a bus, and is connected to the 3.5-inch floppy drive unit 104.
A floppy controller 103 for controlling the is connected. Further, the CPU 100 is connected to a keyboard 107 via a keyboard connector 106 via a bus,
A keyboard controller 105 for inputting a signal indicating which key is pressed to the CPU 100 is connected. Further, the CPU 100 is connected with a Centro driver 108 for driving a Centronics standard device (for example, a printer) connected to a Centronics standard Centro connector 109 via a bus.

A plane I / O 120 is connected to the CPU 100 via a bus, and the plane I / O 120 is connected.
DC-to the O120 via the plane switch 121.
The DC converter 117 is connected. And DC-
An external power supply 625 is connectable to the DC converter 117 via a jack 620, and when the power supply supplied from the main body A is used via the connection terminals 119 and 613 connected to the main body A, the power supply 625 is used. Are connected, and the DC-DC converter 117 converts these power supply voltages into voltages used in the child device b. In this power supply circuit, a diode 626 is provided as a current backflow prevention means for preventing a current from flowing into the external power supply 625.

[Communication Operation] FIG. 15 is an explanatory view of a connected state in which the main body A and the child device B are attached to each other. The reinforcing plate 613 of the hook portion 603 of the child device B is urged upward, and FIG.
The switch 29a of the mounting detection switch 29 as shown in (1) is turned on, the output logical value of the NOT circuit 29b becomes "1", the interrupt INT is notified, and the plane I / O 30 is also detected. Further, when the main body A and the child device B are coupled, the light emitting diode and the photodiodes 27, 28, 113, 114 that perform optical communication are connected to the A channel and the B channel, respectively, and the main body A and the child device B are connected.
In the coupled state with, various types of communication are performed without requiring a special connection cable.

FIG. 17 and FIG. 18 are flowcharts of the operation of the optical communication plane of this embodiment. When the main body A and the slave unit B are mounted and brought into a coupled state, the mounting detection switch 29 of FIG. NOT circuit 29b to CPU1
When 0 is interrupted and the INT routine is entered, attachment detection is confirmed in step S200 of FIG. Next, in step S201, the optical communication plane is turned on. That is, the electrode plane I /
The 4th bit of O30 is set to "1" and the optical communication plane 41
The switch 31 is turned on. And step S2
In 02, after waiting for a predetermined time until the power supply stabilizes,
In step S203, the communication controller 24 is initialized, the communication flag is turned on in step S204, and the interrupt routine ends.

In normal communication, with the communication flag turned on, polling called at regular intervals or selecting called according to a necessary event is performed. FIG.
If the attachment detection is confirmed in step S205, the process proceeds to step S206 to enter the communication routine. Step S2
If the attachment detection is not confirmed in 05, it is a separated state, so that the parameters necessary for communication are backed up in step S207, the optical communication plane is turned off in step S208, and the communication flag is turned off in step S209. And finish. After that, the communication routine is not entered unless the communication flag is turned on in the interruption routine due to the attachment detection. Further, when the power is turned on, the detection of the mounting detection means 29 is confirmed during the power source initialization. If the mounting is detected, the optical communication plane is turned on, the communication controller is initialized, and the communication flag is turned on.

In the usage pattern of this embodiment, when the main body A is used alone, the main body A can be used from any direction, and the predetermined input information by the input pen 15 is
It is input to the CPU 10, and the CPU 10 determines the display direction based on the input information, and the liquid crystal display controller 1
The data in the VRAM 18 is rewritten through 7. Then, the liquid crystal display controller 17 displays the rewritten data in the VRAM 18 on the liquid crystal display 19 to automatically change the direction of the displayed image.

At the time of inputting with the input pen 15, the cord 509 wound between the main body A and the holder 506 is pulled out, and the groove portion 51 provided near the four corners of the bottom surface of the main body A.
5a to 515d, and by bringing the code 509 from that position to the input surface side, when the operator is right-handed, the code is located on the right side, and when the operator is left-handed, the code is located on the left side, and input is performed. It can be done smoothly.

In the use state in which the main body A and the child device B are combined, the child device B is positioned on the lower back side of the main body A so that the rubber feet 612a are inclined so that the front side is lower and the back side is higher. , The display of the liquid crystal display 19 is easy to see,
Further, the input with the input pen 15 becomes easy. further,
It is also possible to use the child machine B in a state where the side surface on the back side is the bottom surface and the whole is erected, and in this case, the stand 614 of the child machine B is used.
Can be rotated, installed at a predetermined position, and stably held. This state is convenient when the cordless handset B is used by being connected to a keyboard and the liquid crystal display 19 is used as a display surface.

As described above, the main body A is equipped with a rechargeable battery 33 and can be used by connecting the external power source 624 to the jack 623 as described above. The cordless handset B is often used indoors because it is used by connecting it to other devices such as a printer and a computer, and therefore it is not necessary to equip the cordless handset with an internal power source.
It is operated by an external power supply 625 connected to the jack 620 and can be supplied with power from the main body A in the coupled state. In this way, when the power source circuit is simplified and the power source is supplied to the main unit A or the slave unit B and the slave unit B or the main unit A is mounted and connected, the slave unit B or the main unit A is mounted. The power is supplied automatically, eliminating the need for complicated connection operations.

Particularly in this embodiment, the jack 62 of the main body A is
3 is connected to the external power source 624, and the jack 620 of the child device B is connected.
When the external power supply 625 is connected to the main unit A and the slave unit B,
Since they cannot be attached to each other, power is not supplied from both external power sources in the coupled state.
For this reason, the structure of the protection circuit complying with the safety standard for preventing the accidents of ignition and smoke caused by the electric power being supplied from both the external power sources at the time of failure of the device is simple and the manufacturing cost can be reduced. In particular, the means for preventing simultaneous connection of the main unit A and the slave unit B to the external power sources 624 and 625 has a simple mechanical structure using a power jack, and the above-mentioned effects can be further improved. Furthermore, in the present embodiment, when the main body A and the child device B are attached or detached, no complicated power cord connection change work is required, and the operation is simple.

In this embodiment, the case where the ultrasonic type digitizer is used as the input means has been described, but the present invention is not limited to the above-mentioned examples, and the electromagnetic induction type and the electrostatic coupling type are used. Alternatively, a resistive film type digitizer can be used. Further, the display means is not limited to the liquid crystal display of the embodiment, and a CRT can be used.

[0049]

According to the present invention, when the main body and the cordless handset are used in combination with each other, the connection between one of the first connecting means and the second connecting means to the external power supply is prevented. Therefore, the structure of the protection circuit that complies with the safety standard to prevent fire and smoke accidents caused by the supply of power from both external power supplies when the device fails is simplified, the manufacturing cost is reduced, and the main body and the child There is an effect that the operation can be easily performed without needing a complicated work of changing the connection of the power cord when the device is attached to or detached from the machine.

[Brief description of drawings]

FIG. 1 is a perspective view of a main body according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a bottom view of the main body.

FIG. 4 is a sectional view taken along line BB of FIG.

5 is a sectional view taken along line CC of FIG.

FIG. 6 is a perspective view of a child device.

7 is a cross-sectional view taken along the line DD of FIG.

8 is a sectional view taken along line EE of FIG.

9 is a sectional view taken along line FF of FIG.

FIG. 10 is an explanatory diagram of a mounting operation of the main body and the child device.

FIG. 11 is an explanatory diagram when an external power supply is connected to the information processing device.

FIG. 12 is a block diagram showing a configuration of an electric circuit of the main body.

FIG. 13 is a block diagram of a power supply circuit portion.

FIG. 14 is an explanatory view of a combined state in which the main body and the child device are attached to each other.

FIG. 15 is a circuit diagram of a configuration of a mounting detection switch.

FIG. 16 is a block diagram of a power supply circuit portion of a child device.

FIG. 17 is a flowchart of the operation of the optical communication plane.

FIG. 18 is a flowchart of the operation of the optical communication plane.

[Explanation of symbols]

 A main body B cordless handset 15 input pen 16 digitizer 19 liquid crystal display 513a, 513b guide part 603 hook part 608a, 608b guide pin

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yuichiro Yoshimura 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Atsushi Tanaka 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Incorporated (72) Inventor Kiyoshi Kaneko 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (4)

[Claims] 1. A main body having an information input means, a display means, a first signal exchange means for exchanging signals with the outside, and a first connection means for connecting with an external power source, and exchanging signals with the outside. The main body and the second unit are provided, which include a second signal transmitting / receiving unit to perform and a second unit having a second connecting unit to connect to an external power source, and a mounting unit to mount and couple the main unit and the slave unit to each other. An information processing device used in a state in which a slave unit is connected to each other or separated from each other by the mounting means, and when the main body and the slave unit are in a connected state, the first unit An information processing apparatus comprising: blocking means for blocking the connection of the external power source by one of the connecting means and the second connecting means. 2. When the main body and the slave unit are separated from each other, the main unit or the main unit that is prevented from being connected to the external power source from the slave unit or the main body connected to the external power source, or The information processing apparatus according to claim 1, further comprising power supply means for supplying power to the slaves. 3. The information processing apparatus according to claim 2, wherein the power supply means also serves as the mounting means. 4. The main body and the slave unit each have side surfaces facing each other when in the coupled state, and the power supply means is provided on the side surface of the main body and receives the external power supply. The information processing apparatus according to claim 2 or 3, further comprising: a unit provided on the side surface of the slave unit to receive a supply of the external power source.