JPH0410157A - Electronic system pocketbook device - Google Patents

Abstract

PURPOSE:To reduce the power consumption by realizing repeat of pulses or a pulse in a certain level in accordance with the level of an information signal. CONSTITUTION:A control circuit 11 outputs a signal (b) in accordance with an information signal (a). That is, a pulse signal of alternate repeat of levels '1' and '0' is outputted when the information signal (a) is in the level '0', and a signal kept in the level '1' is outputted when the information signal (a) is in the level '1'. For example, only the part in the level '0' of the information signal (a) is finely modulated as shown by a signal (b), and the modulated wave is transmitted through a coil L1 as shown by a signal (c). The signal (c) is digitally converted to a signal (d) on the reception side and taken out as reception data as shown by a signal (e).

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an electronic notebook device having an electronic processing function.

[Prior Art] In recent years, as IC cards and large capacity memories have become easily available, Japanese Patent Laid-Open No. 62-1073
ROM and RAM as disclosed in Publication No. 60
An electronic notebook has been proposed that can be used for various purposes by converting it into a card and replacing the card with a portable case.

In this case, if you prepare various ROMs with different data written in them, you can use them for various purposes just by replacing the cards. However, this device had a fixed input device and was not expandable.

In order to solve this problem, it is possible to install the expansion card in the expansion card mounting tool, but in this case, it is necessary to perform communication between the main unit and the expansion card, and this communication is necessary for workability. Non-contact communication is desirable, and as an example of non-contact communication, Japanese Patent Application Laid-Open No. 62-213429 discloses means using electromagnetic induction. This means that the sender is
Different frequencies are transmitted at the ``1'' level and the ``0'' level, and the receiving side always oscillates a certain frequency, and when a frequency that is synchronized with this frequency is input, the amplitude of the oscillating signal is reduced. This is AM demodulated and used as a signal.

[Problems to be Solved by the Invention] However, in such conventional devices, the receiving circuit generates oscillation output regardless of the presence or absence of transmitted data, so power consumption always occurs in that part. The problem was that it was not suitable for portable devices with limited battery capacity.

[Means for Solving the Problems] In order to solve such problems, the first invention transmits a periodic pulse signal for a first level, and transmits a periodic pulse signal for a second level. This uses a pulse generating means that generates a pulse signal whose level does not change during the duration of the pulse signal.

The second invention is provided with a modulation means for modulating at least a pulse with no level change with a pulse signal having a period much shorter than the period thereof.

[Function] With this configuration, the electrical state of the receiving side does not change except when there is a state change, and therefore, if circuit elements such as CMOS are used, power consumption can be extremely reduced.

[Act 8! Example 1 Roasted Δlu Figure 1 is a perspective view of an electronic organizer device showing an embodiment of the present invention.In Figure 0, 1 is a portable electronic organizer body, 11 is a display section, and 1□ Cursor keys, 1. Function keys 14 and 15 are IC cards, and 16 is a power supply.The main body 1 has a CPU (not shown) inside, and has a function of processing input data.

Reference numeral 2 denotes an expansion card mounting tool, which is composed of a ring 2□ into which the recording paper 3 is mounted and an opening/closing fitting 22 which opens and closes the ring 21. Reference numeral 4 denotes an expansion card, and the transmission and reception of necessary data with the main body 1 is performed by a communication means described later.

Figure 10 is a perspective view showing an embodiment of the present invention, in which the expansion card mounting tool 2 is separated from the middle, and an expansion card is mounted between them. Among the rings 21,
The innermost ring is wrapped with an electromagnetic induction coil. This coil is individually wound around the right and left rings as shown in FIG. 11, and the winding directions of each are such that the magnetic fields generated by the respective coils act harmonically.

In this way, the coil on the main body side is formed on the ring 21 of the expansion card mounting tool 2, and the air-core coil 4. By interlinking them as shown in Fig. 11 (the expansion card in Fig. 11 shows only the air core coil 4), contactless communication can be established between the main body and the expansion card. There is.

FIG. 13 is a circuit diagram of a transmitting circuit and a receiving circuit that transmit data via the communication means configured as described above. The feature of this circuit is the transistor Ql.

Q2, resistors R3, R4, diode D1, coil Ll,
It is located in the part consisting of L2 and capacitor C3.

In order to transmit information by electromagnetic induction, it is desirable to have a large amount of current flowing through the coil. However, this circuit is intended to be powered by, for example, a coin-shaped lithium battery, but this battery cannot carry a large current, and forcing a large current to flow will lead to battery deterioration. To cover this problem, resistor R3 is set to 270 ohms, for example.
Resistor R4 is 56 ohm, capacitor C3 is 10 ohm, 0 ohm
I set it to OPF and it actually solved the problem.

That is, the capacitor C3 is charged with a small current through the 270 ohm resistor R3, thereby lightening the load on the battery. On the other hand, when the capacitor C3 is discharged, a large current is caused to flow through the coil L1 through the 56 ohm resistor R4 to generate a large magnetic field.

The signal transmission through this circuit is as shown in Figure 14.
A data pattern of 11 bits in total is sent, including a level start bit, 1 data bit Do to D7, 1 parity bit, and a level stop bit.

Figure 15 is a diagram showing how each bit is sent, in which only the "0" level part of the bit shown in (a) is finely modulated as shown in (b), and the modulated wave is transmitted through the coil as shown in (C).Then, it is digitally converted as shown in (d) on the receiving side, and (e
) is extracted as received data.

FIG. 16 is a block diagram of the part that transmits signals through this coil, and this part is the characteristic part of the present application. In FIG. 16, 10 is a clock circuit, 11 is a control circuit, 12 is a switch circuit, and 13 is a demodulation circuit. The control circuit outputs the signal shown in FIG. 15(b) in response to the information signal. In other words, when the information signal is at the "0" level, a pulse signal that alternately repeats the level and O level is sent out during that period, and when the information signal is at the "1" level, a signal that continues at the level is output during that period. It is supposed to be done.

The specifications of the message are as follows. First of all, with the exception of some basic messages, messages from the main unit to the expansion card and messages from the expansion card to the main unit,
The structure is command-logical address-data string □message end □BCC. If there is no data string or the data length is fixed, the message end and BC
C is omitted. BCC is the exclusive OR of all data from the command to the end of the message.

[Hunger] Mouth 11 Fig. 2 is a diagram showing another embodiment, showing the display section, and Fig. 3 is a block diagram of the main part. In FIG. 2, the display section is a touch panel, and necessary processing is performed by touching a predetermined part with a finger according to the instructions on the screen. Figure 2 shows an example where the keys of the part selected by the coordinate range designation signal are displayed in this way.If only the keyboards A, B, C, D, and E are needed, Only the following information is displayed, and it is displayed in an easy-to-use format.

FIG. 3 shows a circuit that outputs a key code, including an arithmetic processing section 1□2, a coordinate input section 1□3, and an input coordinate extraction means 11.
4, a table 115, and a memory 1!5, and the arithmetic processing section-1□2 is supplied with a coordinate range designation signal and a key code extraction command.

The coordinate range designation signal is a signal indicating what kind of display is to be performed on the display unit 11. For example, in the example of FIG. 2, keys A, B, and C are pressed.
, D, and E is divided into 50 blocks from Ia to Xe as shown in FIG. Since each key is assigned here assuming a rectangular parallelepiped key, the range of each key can be specified by the upper left coordinate value and lower right coordinate value of the key.

In Fig. 2, if the coordinates of the horizontal axis of the screen are set as O~99 and the coordinates of the vertical direction are set as 0~49, then the coordinates of key A are (left 4,
(Top 5); (Right 24, Bottom 15) The number of blocks is arbitrary, but in the example of FIG. 2, it is assumed that one block is 10 in size both vertically and horizontally. For example, IVd
The coordinates of the block are 30 on the left, 30 on the top); (40 on the right,
40) below.

When a coordinate range is specified and keys A to E are set, for example, as shown in FIG. 2, two types of tables, such as a first table and a second table, are created.

Then, it is determined which key has been registered from the garment based on the pressed coordinates, and only the registered keys are compared in range from the table to confirm the input key. At this time, when a certain part is pressed, the coordinate input section 113 outputs the coordinate signal of the pressed part, but only one of the coordinates is outputted by the input coordinate extraction means 1.4, and the professional/yri is specified. 9 For example, when block ■b is pressed, one coordinate (75,
18) is input, it can be seen from the coordinate values that it is the block ■b, and it can be seen from Table 2 that keys C3+ and 4 are registered. From Table 1, the key (3) corresponds to key C, and the key +5] corresponds to key E.
Applies to. However, the detected coordinates are (75, 18)
Therefore, key E does not correspond to this coordinate range. Therefore, key C corresponds to the coordinate range, so key code C is output. In the case of the present application, a key code is directly output instead of a coordinate signal as in the conventional case. In addition, since we check which block was pressed, check which key is registered in that block, and decide which key code to output from that data, it is possible to It is possible to sequentially search all keys within an area and identify the pressed part more quickly than when converting to a key code.

In addition, in Figure 2, the block of key C overlaps with key DE, but such a part can be searched in the order of priority as shown in Table 1, and if the key codes are confirmed in that order. Good, the search layer in Table 1 represents this priority order.

FIG. 4 is a diagram showing another embodiment, in which the upper left corner and lower left corner of the expansion card 4 are cut diagonally, and the cut portion is located at the center wLJ of the expansion card mounting hole.
□The transmitting section 41 and the receiving section 4. is provided. Also, on the center line of the main body 1, the transmitter 4
The receiving section 120 is installed in the part corresponding to □. The transmitter 1□□ is attached to the part corresponding to. In this case, the receiving section 1□ on the main body side. The transmitter 1□□ is omnidirectional, and the transmitter 41 and receiver 43 on the expansion card side are the receiver 1□
. , the directivity is directed toward the transmitter 1□1.

In the device configured in this manner, the transmitting section 4 on the expansion card side is provided at the center line of the mounting hole, and the receiving section 1□ on the main body side. Since it is provided on the center line of the main body side, even if there is play within the allowable range of the mounting tool when the expansion card is installed, the directivity is less likely to shift compared to when it is installed in other parts.

In Figure 4, the part to cut out the expansion card is in the upper left corner, but it can also be cut out in the lower left corner.In addition, instead of cutting out the expansion card in any part of the left edge as shown by the dotted line in Figure 4, in Figure 4 it is placed near the center of the left edge. ) A notch in the shape of a letter ■ may be provided, and the transmitter/receiver section may be provided in that portion.

In addition, if the part where the transmitter/receiver is attached is not a straight line as shown in Figure 4, but a convex chamfer as shown in Figure 5 (a), the transmission direction can be spread out, and the reception becomes easier. Furthermore, if a concave chamfer is formed as shown in FIG. 5(b), energy can be concentrated on the receiving element, and efficiency can be further improved if a reflective coating or a reflector plate is used on the cut surface.

FIG. 6 (a> is a diagram showing another embodiment, display section 1□
The 0 display section 11 showing the part is the display section 12 on the main body side.
2, and a display emphasizing section 1□3 that is detachable from the display section 122.
The display section 12□ on the main body side consists of a touch panel 122m that enables handwritten character input, a display element 122゜ such as a transparent liquid crystal display, and a connecting section 122.
It is composed of e.

The display emphasis section 123 includes a light emitting device 123m and a battery 123.
b, a connecting portion 123e, and a claw 123d for engaging the display portion 122 and the display emphasis portion 123 on the main body side.

In the device configured in this way, the display section 1□2 is the display emphasis section 12. When attached to the connecting portions 122c and 12
3c is connected to the CPU on the main body side through this connection.
The lighting is turned on and off by software. Further, although the display emphasis section 123 uses a light emitting device, it may also be a reflection plate.

Since the display element of the display section 1□2 uses a transmissive type, the display emphasis section 1 as shown in FIG. 6(b)
23 can be removed and used as an OHP sheet, and in this way the display screen can be enlarged and projected, making it suitable for viewing by a large number of people at the same time.

FIG. 7 is a block diagram showing another embodiment.

In the figure, when the display direction is specified by the display direction specifying means 1□, the signal is supplied to the switching table 12b and the display switching means 126. Therefore, display RAM
The display signal outputted from 12e is supplied to the display device 1□ with its direction switched and displayed. Therefore, even if the screen is turned vertically or horizontally depending on how this device is held, the display direction remains normal for the operator.

A key code suitable for the display direction is stored in the switching table 1□5, and the key code is stored in the display direction specifying means 12. It is read out according to the specified signal. On the other hand, the direction keys are pressed when viewed from the operator. That is, if the user wants to move the cursor upward, the operator presses the upper part of the cross-shaped direction key, and the direction key outputs a signal corresponding to that position. Then, as described above, the display direction specifying means 12. from the switching table 12b. The key code for the specified direction is output, and this key code is as shown in Table 3, for example.

In Table 1, the figure that is displayed as a solid line in Figure 8 during normal operation will move 90 degrees to the right when the device is used with the device tilted to the right.
When used in a rotated state, the orientation of the screen also changes by 90 degrees, as indicated by the dotted line in FIG. Therefore, when tilting to the right, the key (key with symbol B) that normally moves the cursor to the left using the cursor key 12 now plays the role of moving the cursor upward. Therefore, if the role of cursor key 1□ changes depending on the orientation of the screen as shown in Table 3, the user will not have to pay any attention even if the orientation of the screen changes, and the cursor key will always be pressed. All you have to do is operate the keys according to the physical location of the key.

FIG. 9 is a flowchart showing the operation, and shows a state in which a predetermined table is selected according to each orientation.

FIG. 8 shows a specific example of the display direction specifying means,
J [f! There is a contact sensor at s, and a designated signal is output from this sensor. That is,
Since the sensor can tell which position the screen is being held in, the orientation of the screen can be automatically identified based on that signal. In this case, it is more convenient to provide the predetermined input keys in each hatched part.

[Effects of the Invention] As explained above, the first invention realizes the state of repeating pulses or pulses of a constant level depending on the level of the information signal, so that while the signal is being sent from the transmitting side, Since an electrical change only occurs during the period and no change in electrical state occurs during the other periods, for example, if the circuit elements are made of CMO3, it is possible to realize a device with extremely low power consumption. In the second invention, since there are pulses with little state change during transmission, at least that part is modulated with a pulse of a much shorter period than the period of the pulse, so
This has the effect of ensuring reliable information transmission.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a view showing necessary keys displayed on the screen,
3 is a block diagram of a circuit that performs the display shown in FIG. 2, FIG. 4 is a diagram showing a signal transmission method between an expansion card and the main body, and FIG. 5 is a diagram showing an example of application of the expansion card in FIG. 4. Figure 6 is an exploded perspective view of the display unit, Figure 7 is a block diagram of a circuit that corrects the cursor movement direction when the screen direction is changed, and Figure 8 is a diagram for explaining the screen display direction. figure,
Fig. 9 is a flowchart showing the operation when correcting the cursor movement direction in response to a change in the screen display direction, Fig. 10 is a perspective view showing the signal transmission method when communicating between the expansion card and the main body by electromagnetic induction, and Fig. 11 is a perspective view showing the main part of FIG. 10, FIG. 12 is a diagram showing a coil on the expansion card side when communicating by electromagnetic induction, FIG. 13 is a circuit diagram of a circuit that transmits signals by electromagnetic induction, and FIG. 15 is a diagram showing the bit configuration when communicating between the expansion card and the main body, FIG. 15 is a diagram showing how to send each bit, and FIG. 16 is a block diagram of a circuit that transmits each bit. 112... Arithmetic processing unit, 113... Coordinate input unit, 114... Input coordinate extraction means, 115...
-Table, 116--Memory.

Claims (2)

[Claims] (1) In an electronic notebook device that communicates between the main body and an expansion card by electromagnetic induction and transmits a combination of a first level and a second level by a pulse signal, sends out a pulse signal,
An electronic notebook device characterized in that a pulse generating means is used for generating a pulse signal that does not change in level for the duration of the second level. (2) The electronic notebook device according to claim 1, further comprising modulation means for modulating at least the pulse with no level change with a pulse signal having a period much shorter than the period thereof.