JPH08314622A - Wireless coordinate input device - Google Patents

Abstract

PURPOSE: To provide a wireless coordinate input device which eliminates the troublesomeness of a cable by employing wireless constitution. CONSTITUTION: This device is equipped with a wireless mouse 1 which sends an infrared-ray signal and a wireless mouse receiver 2 which is connected to the mouse interface of a personal computer main body 3 and receives the infrared-ray signal from the wireless mouse 1. The wireless mouse 1 converts parallel data showing respective two-phase signals of an XY rotary encoder and the on/off signals of a right and a left click switch into serial data and sends the infrared-ray signal showing the converted serial data. Then the wireless mouse receiver 2 converts the serial data represented with the received infrared-ray signal into parallel data and outputs a coordinate input signal to the mouse interface of the personal computer main body 3 according to the converted parallel data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless coordinate input device used especially as a man-machine interface for personal computers (hereinafter referred to as personal computers) and workstations.

[0002]

2. Description of the Related Art Conventionally, as a coordinate input device for a general personal computer, as shown in FIG.
There is a mouse 101 connected to the mouse interface of the personal computer main body 102 via the.

FIG. 13 shows a circuit diagram of the mouse 101, which includes an X-direction rotary encoder 111, a Y-direction rotary encoder 112, and a left click switch 1.
14 and a right click switch 113, and a connector 104 at one end of the cable 103. The power supply VD from the mouse interface of the personal computer body 102 is connected to pins 1 and 9 of the connector 104 of the cable 103
D and ground GND are connected. The XA and XB output terminals of the X-direction rotary encoder 111 are connected to pins 2 and 3 of the connector 104, respectively, and the YA and YB output terminals of the Y-direction rotary encoder 112 are connected to pins 4 and 5 of the connector 104. They are connected to each other. In addition,
X of the XY direction rotary encoders 111 and 112
The A, XB, YA, and YB output terminals are connected to the power supply VDD via the resistors R1 to R4, respectively, and are also connected to the ground GND via the capacitors C1 to C4. Further, one end of each of the left and right click switches 114 and 113 is connected to the connector 104.
6 and 8 and the other end is connected to the ground GND. In this way, the mouse 101
Two-phase signal XA from X direction rotary encoder 111,
XB, two-phase signals YA and YB from Y direction rotary encoder 112, SWL signal indicating ON / OFF of left click switch 114 and SWR signal indicating ON / OFF of right click switch 113 are input to personal computer main body 102 via cable 103. are doing.

Further, as shown in FIGS. 14 (a) and 14 (b), the two-phase signals XA and XB of the X-direction rotary encoder 111 are used.
Are signals that maintain a phase difference of 180 degrees with each other. When moving in the positive direction (right direction) of the X axis, the A phase leads the phase of the B phase, and the negative direction of the X axis (left direction). When moving to), phase B leads phase A compared to phase A. Further, the two-phase signals YA and YB of the Y-direction rotary encoder 112 are the same as the two-phase signals XA and XB, except that the directions are positive and negative directions (vertical direction) of the Y-axis. Further, as shown in FIGS. 14C and 14D, as the moving speed of the mouse 101 in the Y direction is higher, the pulse widths of the two-phase signals YA and YB are smaller, and the moving speed in the X direction and the two-phase signal are two phases. The same applies to the relationship between the pulse widths of the signals XA and XB. Then, as shown in FIGS. 14 (e) and 14 (f), the SWL
Signals and SWR signals are left and right click switches 114 and 1, respectively.
While pressing 13, it goes to "L" level.

By connecting the connector 104 of the cable 103 which bundles these signal lines to the mouse interface of the personal computer main body 102, coordinate input information from the mouse 101 is input to the personal computer main body 102.

[0006]

By the way, since the mouse 101 is connected to the personal computer main body 102 via the cable 103, there is a drawback that the cable 103 is an obstacle and the operation is troublesome. Especially, in a laptop computer that is small and lightweight and can be operated with a built-in battery, the cable becomes an obstacle not only when operating but also when moving.

Therefore, an object of the present invention is to provide a wireless coordinate input device capable of eliminating the troublesomeness of a cable by making it wireless.

[0008]

In order to achieve the above object, the wireless coordinate input device according to claim 1 is a wireless coordinate input device for inputting coordinate input information to an information processing device, wherein parallel data representing the coordinate input information. From the infrared transmission means, and a transmission section having a parallel-serial conversion means for converting the serial data into serial data, and an infrared transmission means for transmitting an infrared signal based on the serial data converted by the parallel-serial conversion means. Infrared receiving means for receiving an infrared signal and outputting a signal representing the serial data;
And a serial-parallel conversion means for receiving the signal representing the serial data from the infrared receiving means and converting the serial data into parallel data.

According to a second aspect of the present invention, there is provided the wireless coordinate input device according to the first aspect, wherein the X-axis direction movement amount, the movement direction and the Y-axis direction movement amount, the movement direction and the switch input information are used. The parallel data creating means for creating the parallel data representing ON / OFF of the switch at a predetermined time is provided in the transmitting unit.

According to a third aspect of the present invention, there is provided a wireless coordinate input device according to the second aspect, in which the information processing device is based on the parallel data converted by the serial-parallel conversion means of the receiving section. It is characterized in that the receiving section is provided with a restoring means for outputting a signal representing coordinate input information according to the mouse interface.

A wireless coordinate input device according to a fourth aspect of the present invention is the wireless coordinate input device according to any one of the first to third aspects, wherein the address of the transmitter is set.
An address setting unit is provided in the transmitting unit, a second address setting unit that sets an address of the receiving unit, and a determining unit that determines whether the address of the transmitting unit and the address of the receiving unit match. It is characterized in that it is provided in the receiving unit.

[0012]

According to the wireless coordinate input device of the first aspect, coordinate input information input to the information processing device, for example, X.
The parallel data representing the amount of movement on the Y coordinate axis, the moving direction, and the on / off state of the switch are converted into serial data by the parallel / serial conversion means of the transmitting unit. Then, based on the serial data converted by the parallel-serial conversion means, the infrared signal of the transmitter is transmitted by the infrared transmitter of the transmitter. Then, the infrared receiving means of the receiving section receives the infrared signal from the infrared transmitting means and outputs a signal representing the serial data. The serial-parallel conversion means of the reception unit receives a signal representing serial data from the infrared reception means and converts the serial data into parallel data. Therefore, the information processing apparatus can obtain the coordinate input information of the movement amount, the movement direction, and the switch on / off on the XY coordinate axes by using the parallel data from the reception unit.

Therefore, it is possible to eliminate the troublesomeness at the time of input operation or movement of the coordinate input device such as a mouse or a trackball which is connected to the information processing device through a cable.

According to the wireless coordinate input device of the second aspect, in the wireless coordinate input device of the first aspect, the parallel data creating means of the transmitting unit causes the amount of movement in the X-axis direction, the moving direction and the Y-axis. Based on the amount of movement in the direction, the direction of movement, and on / off of the switch, a predetermined time (for example, 1
The parallel data is created every 0 ms). For example, in a mouse that outputs a two-phase signal indicating each movement amount and movement direction in the XY axis directions on the XY coordinate axes by two rotary encoders, a two-phase signal of the rotary encoder in the X-axis direction and the rotary encoder in the Y-axis direction is output. The edge count represents the amount of movement, and the phase relationship between the two-phase signals represents the direction of movement. Therefore, by transmitting the edge count number and the moving direction from the transmitting unit to the receiving unit at every predetermined time, the two-phase signal output from the rotary encoder in the XY axis directions at the receiving unit is restored based on the predetermined time. can do.

Therefore, the coordinate input information can be easily restored by the receiving unit based on the movement amount and the movement direction in the XY axis directions at every predetermined time.

Further, according to the wireless coordinate input device of the third aspect, in the wireless coordinate input device of the second aspect, the restoration is performed based on the parallel data converted by the serial-parallel conversion means of the receiving unit. The means outputs a coordinate input signal corresponding to the mouse interface of the information processing apparatus. For example, when the mouse connected to the mouse interface of the above information processing apparatus outputs two-phase signals indicating the respective movement amounts and movement directions in the XY axis directions on the XY coordinate axes and the switch on / off signal by two rotary encoders, The two-phase signals from the two rotary encoders and the on / off signal of the switch are restored by the restoring means of the receiving unit as coordinate input signals corresponding to the mouse interface.

Therefore, the coordinate input signal is directly connected from the receiving section to the mouse interface to which the conventional cable connection type mouse is connected, without using a dedicated interface, and used in the same manner as the cable connection type mouse. can do.

Further, according to the wireless coordinate input device of the fourth aspect, in the wireless coordinate input device according to any one of the first to third aspects, the first address setting means provided in the transmitting unit causes The address is set, and the address of the receiving section is set by the second address setting means provided in the receiving section. Then, the address of the transmitter is included in the parallel data and sent to the receiver, and when the determiner determines that the address sent and the address of the receiver match, the data sent from the transmitter is valid. On the other hand, when the determining unit determines that the address of the transmitting unit does not match the address of the receiving unit, the serial / parallel-converted parallel data is invalidated so that the address of the transmitting unit and the address of the receiving unit do not match / mismatch. Thus, it is possible to determine whether the data received by the receiving unit is valid or invalid.

Therefore, the transmission data can be validated only when the addresses of the transmitting unit and the receiving unit match, and when the wireless coordinate input devices are simultaneously used in a plurality of personal computers or the like, the respective wireless coordinate input devices have different addresses. By setting to, interference and malfunction can be prevented.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wireless coordinate input device of the present invention will be described in detail below with reference to an embodiment.

FIG. 1 is an external view of a personal computer system using a wireless coordinate input device according to an embodiment of the present invention.
This wireless coordinate input device includes a wireless mouse 1 as a transmitter, and a wireless mouse receiver 2 as a receiver mounted on a mouse interface (not shown) of the personal computer body 3.

FIG. 2A shows a perspective view of the wireless mouse 1, and FIG. 2B shows a rear view of the wireless mouse 1. The wireless mouse 1 is a case 1
0, infrared LED 11, left click switch 12
1, a right click switch 13, a ball 14, a dry battery storage unit 15 and a speed changeover switch 16.

FIG. 3 is a block diagram of the wireless mouse 1. The mechanical type X-direction rotary encoder 21 outputs two-phase signals XA and XB in the X direction and the two-phase signal YA in the Y direction. Mechanical type Y-direction rotary encoder 22 that outputs YB, left click switch circuit 23, and right click switch circuit 24
And the two-phase signals XA, XB from the X-direction rotary encoder 21 and the two-phase signals from the Y-direction rotary encoder 22.
Receiving the phase signals YA and YB, the two-phase signals XA and XB and the two-phase signal Y
A rotary encoder IC (integrated circuit) 25 for counting the edges of A and YB, respectively. Further, the rotary encoding IC 25 receives an on / off signal from the left click switch circuit 23 and an on / off signal from the right click switch circuit 24, and at the same time, a signal representing the edge count number and the on / off states of the left and right click switch circuits 23, 24. Is output.

In the wireless mouse 1, a signal indicating the number of edges counted from the rotary encoding IC 25 and the ON / OFF states of the left and right click switch circuits 23 and 24, a switching signal from the speed changeover switch circuit 26, and a reset circuit 27 are sent. A microcomputer 28 that receives a reset signal and outputs a serial signal, and the microcomputer 2 described above.
And an LED drive circuit 29 for driving the infrared LED 11 by receiving the serial signal from the LED 8. The microcomputer 28 includes a data creation unit 28a as a parallel data creation unit and a parallel / serial conversion unit 28b as a parallel / serial conversion unit.
And the address setting unit 28 as the first address setting means.
have c and. In addition, the infrared LED 11 and LE
The D drive circuit 29 constitutes an infrared transmitting means.
In addition, the microcomputer 28 includes an oscillator circuit 2 for clocks.
0 is connected.

FIG. 4A is an external view of the wireless mouse receiver 2, and FIG. 4B is a rear view of the wireless mouse receiver 2. The wireless mouse receiver 2 includes a receiver case 30 having a substantially rectangular parallelepiped shape,
An indicator LED 31 provided on the upper surface of the receiver case 30, an infrared transmission filter 32 provided on the front surface of the receiver case 30 for transmitting infrared rays,
The flat case bus connector 33 is provided on the rear surface of the receiver case 30 according to the connector shape of the mouse interface of the personal computer body 3. The infrared signal transmitted from the wireless mouse 1 passes through the infrared transmission filter 32 and is received by an internal light receiving circuit (not shown).

FIG. 6 is a block diagram of the wireless mouse receiver 3 shown in FIG. The wireless mouse receiver 3 receives an infrared signal from the wireless mouse 1 and receives a serial signal from the light receiving circuit 51 as an infrared receiving unit that outputs a serial signal and a serial signal from the light receiving circuit 51, and outputs a coordinate input signal. A microcomputer 53 for outputting and an oscillating circuit 54 for outputting a clock signal to the microcomputer 53.
And an indicator circuit 55 that lights the indicator LED 31 in response to a display signal from the microcomputer 53. The microcomputer 53 has a serial / parallel converter 53a as serial / parallel converter, a restorer 53b as restorer, an address setter 53c as second address setter, and a determiner 53d as determiner. are doing. The restoration unit 53b of the microcomputer 53 uses the restoration method described later to generate two-phase signals XA and XB (XA as coordinate input signals).
Encode signal and XB encode signal) and two-phase signal YA, Y
B (YA encode signal and YB encode signal) and left and right click switch signals are restored.

FIG. 5A is a perspective view of another wireless mouse receiver 4, and FIG. 5B is a rear view of the wireless mouse receiver 4. The wireless mouse receiver 4 has a shape suitable for a circular connector used for a mouse interface of a notebook computer or the like, and has the same structure as the inside of the wireless mouse receiver 2. The wireless mouse receiver 4 includes a receiver case 40 having a substantially rectangular parallelepiped shape, an indicator LED 41 provided on the upper surface of the receiver case 40, and an infrared ray transmitting filter 42 provided on the front surface of the receiver case 40 for transmitting infrared rays. A circular bus connector 43 provided on the left side surface of the receiver case 30 and adapted to the connector shape of the mouse interface of the notebook computer. The infrared signal transmitted from the wireless mouse 1 passes through the infrared transmission filter 42 and is received by an internal light receiving circuit (not shown).

In the wireless coordinate input device having the above structure, when the wireless mouse 1 is moved on the desk, the ball 14 at the bottom of the wireless mouse 1 rotates,
The X-direction rotary encoder 21 generates two-phase signals XA and XB, and the Y-direction rotary encoder 22 outputs two-phase signals.
Phase signals YA and YB are generated. The phase relationship between the two-phase signals XA and XB changes depending on the moving direction of the wireless mouse 1 in the X direction, the pulse width changes depending on the moving speed in the X direction, and the two-phase signals change depending on the moving direction of the wireless mouse 1 in the Y direction. The phase relationship between the signals YA and YB changes, and the pulse width changes depending on the moving speed in the Y direction. These two-phase signals XA, XB, YA, YB in the XY directions and ON / OFF signals of the left and right click switch circuits 23, 24 are rotary encoded I.
It is input to C25, the number of edges is counted, and the edge count number and the on / off states of the left and right click switch circuits 23 and 24 are temporarily stored in the rotary encoding IC 25.

Next, the microcomputer 28 reads out the data of the edge count number and the on / off state of the left and right click switches 12 and 13 from the rotary encoding IC 25, and the data creation section 28a of the microcomputer 28 is shown in FIG.
As shown in (d), parallel data is created and the microcomputer 28
The parallel-serial conversion unit 28b converts the parallel data into serial data and converts the converted serial data into the LED drive circuit 2
Output to 9. Then, as shown in FIGS. 7E and 7F, the infrared signal is transmitted from the infrared LED 11 by the LED drive circuit 29.

As shown in FIG. 7 (e), the sending time of the infrared signal is 2.5 ms, the cycle of one frame is 10 ms, and the data is sent every 10 ms while the mouse is being operated. , Continue sending. This one frame 10
By performing reading and transmission on the basis of a fixed time of ms, parallel data representing a two-phase signal and an on / off signal can be converted into serial data. As shown in FIGS. 7A to 7D, the transmission data of one frame has a 4-byte structure from the first byte to the fourth byte, and the LSB (least significant bit) of the first to fourth bytes. Start bit ST
Is added to MSB (most significant bit) and MSB-1 to stop bit SP and MSB-2 to parity bit VPE.
(Even number) is added.

In the first byte, as shown in FIG. 7 (a), addresses AD3 to AD0 are assigned to bits D7 to D4,
Left and right click CL, CR are assigned to the D3 bit and D2 bit, and the toggle bit TGL is assigned to the D1 bit. The addresses AD3 to AD0 make the wireless mouse 1 and the wireless mouse receiver 2 in use correspond to each other in a one-to-one relationship to prevent interference and malfunction with another nearby wireless mouse. The left and right clicks CL and CR become "1" while the left and right click switches 12 and 13 are being pressed, and become "0" when they are released. The toggle bit TGL is
Invert "0" or "1" every 4 bytes, and toggle bit TGL at the time of signal acquisition on the wireless mouse receiver 2 side.
To check that data arrives alternately to prevent data loss.

Further, as shown in FIG. 7 (b), the second byte has D7 bit in the moving direction SX in the X direction, D6 to D0.
Number of edge counts of 2-phase signals XA and XB in bits X6 to X
As shown in FIG. 7 (c), 0 is assigned, and the third byte has the moving direction SY in the Y direction, D6 to D0 in the D7 bit as shown in FIG.
Number of edge counts of two-phase signals YA, YB in bits Y6 to Y
0 is assigned. The moving direction SX is "1" in the left direction and "0" in the right direction, depending on the left and right moving directions. On the other hand, the moving direction SY is set to "0" in the upward direction and "1" in the downward direction depending on the vertical moving direction.

As long as the edge count number within that period is read in a fixed cycle, the edge count numbers X6 to X0, Y6 to
Y0 does not exceed a certain fixed value due to the resolution of the rotary encoder. Normally, when the above-mentioned fixed period is read at intervals of 10 ms, the edge count number is 10 or less and therefore can be represented by 4 bits. However, when the speed is changed by the speed changeover switch 16, the edge count number is changed to the actual number. Extra bits have been added to allow double or more.

The fourth byte is the horizontal parity LPO0 of the first to third bytes as shown in FIG. 7 (d).
.About.LPO7, which is added to detect an error in the data in one frame, and the wireless mouse receiver 3 side performs a parity check.

Thus, the first byte of the transmission data
The LSB is converted into a bit string in the order of the MSB in the order of the fourth byte, and the infrared signal is transmitted from the wireless mouse 1 with the waveforms shown in FIGS. As shown in FIG. 7 (f), since the transmission time per bit is 4 ms of data (48 bits) with the data transmission time of 1 frame being 2.5 ms, about 52 μs (= 2. 5ms / 48)
Becomes

Then, the above wireless mouse receiver 3
The light receiving circuit 51 receives the infrared signal from the wireless mouse 1 and outputs serial data to the microcomputer 53. The serial / parallel converter 53a of the microcomputer 53 converts serial data into parallel data.

The serial-parallel conversion of the serial-parallel converter 53a is performed by the program of the microcomputer 53. next,
After converting the serial data into parallel data, the restoring means 53b of the microcomputer 53 restores the coordinate input signal from the parallel data. Hereinafter, the restoration method will be described with reference to FIGS.
This will be described with reference to FIG. The output state of the two-phase signals XA, XB and the two-phase signals YA, YB is restored based on each edge count number and the moving direction based on the transmission cycle of the wireless mouse 1 of 10 ms.

That is, as shown in FIG.
When X and SY are "0" (advanced), the AB phase state of the 10 ms period to be output next is 00 → 10 → 11 → 01 → 00 → ・
・ ・ Proceed with. On the other hand, as shown in FIG.
When X and SY are "1" (slow phase), the AB phase state of the 10 ms period to be output next is 00 → 01 → 11 → 10 → 00 ...
・ Proceed with. However, the microcomputer 53 constantly monitors the "0" and "1" states of the AB2 phase which is currently being output, and advances the state from the output state immediately before every 10 ms.

Next, as shown in FIGS. 10 (b), (c) and (d),
Edge count number (count number in FIG. 10) X6 to X0, Y6
The interval of 10 ms is equally divided by Y0. Then, the AB phase state change point in the section of 10 ms to be output next is determined, and the AB phase state is advanced at that change point in order (the order determined by the phase advance and the phase delay), and the two phase signals XA and XB are output. And two-phase signal YA, Y
Output B respectively. That is, the two-phase signal is reproduced on the basis of the edge count number within a fixed time (10 ms) and the moving direction, assuming that the moving speed is constant and the edges are at equal intervals. In addition, in FIG. 10D, the edge count number is 1
Up to 0 are shown, but the same applies to more. Further, as shown in FIG. 10A, when the number of edge counts is 0, the two-phase signals XA, XB and the two-phase signals YA, YB are output while holding the state that was output immediately before.

In this way, the serial infrared signal can be restored to a two-phase signal in each of the XY directions suitable for the mouse interface of the personal computer body 3, that is, an XA encode signal, an XB encode signal, a YA encode signal, a YB encode signal and a left / right click switch signal. .

The wireless coordinate input device sets an address at the time of initial introduction or at the time of preventing interference with other systems. FIG. 11 is a flowchart showing the address setting process of the wireless mouse 1 and the wireless mouse receiver 2.

The address setting process will be described below with reference to FIG. Note that the wireless receiver 4 shown in FIG. 5 also performs similar address setting processing.

In FIG. 11, the left / right click switches 12, 1 are moved without moving the wireless mouse 1 in step S1.
Press and hold 3 simultaneously for 3 seconds. That is, when the left and right click switches 12 and 13 of the wireless mouse 1 are simultaneously pressed for 3 seconds, the microcomputer 28 inside the wireless mouse 1 enters the address setting mode by the ON / OFF signal of the left and right click switches 12 and 13.

Next, in step S2, the indicator LED 31 of the wireless mouse receiver 2 blinks to enter the address setting mode. That is, upon receiving an infrared signal indicating the address setting mode from the wireless mouse 1, the wireless mouse receiver 2 also enters the address setting mode and blinks the indicator LED 31.

Next, in step S3, the user visually confirms the blinking of the indicator LED 31 of the wireless mouse receiver 2 and releases the left and right click switches 12 and 13 of the wireless mouse 1.

Next, in step S4, the wireless mouse 1
The left click switch 12 is set to "1" and the right click switch 13 is set to "0", and the left and right click switches 1
Press 2, 13 to set the addresses AD3 to AD0 to desired values. In other words, the address you want to set (0 to 15)
Accordingly, the left click is set to “1” and the right click is set to “0” in the order of AD3 to AD0 in binary numbers.

Next, in step S5, the indicator of the wireless mouse receiver 2 is turned off, and the address setting is completed.

Thus, the address is stored in the internal memory of the microcomputer 28 of the wireless mouse 1 and the microcomputer 53 of the wireless mouse receiver 2. After that, the infrared signal is transmitted from the wireless mouse 1 at the set address, and the wireless mouse receiver 2 determines whether the address received by the determination unit 53d and the address of the internal memory match, and if they match. Only the received data is valid. Therefore, the wireless mouse receiver 2 cannot receive data other than the wireless mouse 1 having the same address.

In the above embodiment, the mechanical type wireless mouse 1 is used as the rotary encoder, but a wireless mouse using an optical type rotary encoder using a photo interrupter or the like may be used.

Further, in the above embodiment, the two left and right click switches 12 and 13 are used, but a mouse having three click switches may be used.

In the above embodiment, the rotary encoding IC 25 has the two-phase signals XA, XB from the X direction rotary encoder 21 and the Y direction rotary encoder 22.
A general-purpose IC that counts each edge of the two-phase signals YA and YB from
Build with SIC (integrated circuit for specific purpose), or use two-phase signals XA, XB and 2 at the input port of the microcomputer without using IC.
Alternatively, the phase signals YA and YB may be directly connected to each other, and a program may be used to determine whether the phase is advanced or delayed and to perform edge counting.

Further, in the above embodiment, the wireless mouse receiver 2 may be incorporated in the computer body without being connected to the mouse interface connector of the personal computer or the workstation, and only the light receiving portion may be exposed at a place different from the connector. In this case, the wireless mouse of the present invention can be used without protruding to the surface of the computer body, and the conventional wired mouse can also be used.

Further, in the above embodiment, the present invention may be applied to not only the mouse but also other wired pointing devices such as a trackball.

Furthermore, in the above embodiment, the address setting processing of FIG. 11 was performed as the address setting means, but the address setting means may be provided with an address setting switch for each of the wireless mouse and the wireless receiver. In this case, the same address is set in the address setting switch so that the wireless mouse and the wireless receiver have a one-to-one correspondence to prevent interference with other wireless mice.

[0055]

As is apparent from the above, the wireless coordinate input device according to the invention of claim 1 is a wireless coordinate input device for inputting coordinate input information to an information processing device, wherein the parallel / serial conversion means of the transmission unit is a coordinate system. The parallel data representing the input information is converted into serial data, the infrared transmitting means of the transmitting section transmits the infrared signal representing the converted serial data, and the infrared receiving means of the receiving section transmits the infrared signal from the infrared transmitting means. The serial-parallel conversion means of the receiving unit receives the signal representing the serial data from the infrared receiving means,
The serial data is converted into parallel data.

Therefore, according to the wireless coordinate input device of the first aspect of the present invention, as the coordinate input information input to the information processing device, for example, the parallel amount representing the movement amount on the XY coordinate axes, the movement direction, and the switch on / off information. By transmitting the data from the transmission unit to the reception unit, the information processing device can obtain the coordinate input information by the movement amount, the movement direction, and the switch on / off on the XY coordinate axes represented by the parallel data of the reception unit. Therefore, with respect to the coordinate input device such as a mouse or a trackball which is connected to the information processing device via a cable, it is possible to eliminate the troublesomeness when operating or moving the coordinate input device.

According to a second aspect of the present invention, there is provided the wireless coordinate input device according to the first aspect, in which the parallel data creating means of the transmitting section is configured to move in the X-axis direction, move direction, and Y-axis direction. The parallel data representing the moving amount, moving direction, and ON / OFF of the switch are created every predetermined time.

Therefore, according to the wireless coordinate input device of the present invention, for example, in a mouse that outputs two-phase signals representing the respective movement amounts and movement directions in the XY axis directions on the XY coordinate axes by two rotary encoders. , X
The count number represents the amount of movement of each edge of the two-phase signal output by the rotary encoder in the axial direction and the rotary encoder in the Y-axis direction, and the phase relationship between the two-phase signals represents the moving direction. Therefore, by transmitting the edge count number and the moving direction in the XY-axis direction from the transmitting unit to the receiving unit at every predetermined time, the receiving unit side outputs 2 from the rotary encoder in the XY-axis direction based on the predetermined time. The phase signal can be restored. That is, the coordinate input information can be easily restored by the receiving unit based on the movement amount and the movement direction in the XY axis directions for each predetermined time.

According to a third aspect of the present invention, there is provided a wireless coordinate input device according to the second aspect, wherein the receiving unit of the receiving unit is based on the parallel data converted by the serial-parallel converting means of the receiving unit. The restoring means outputs a coordinate input signal according to the mouse interface of the information processing apparatus.

Therefore, according to the wireless coordinate input device of the third aspect of the present invention, for example, the mouse connected to the mouse interface of the information processing device is moved by the two rotary encoders in the XY coordinate directions on the XY coordinate axes. When outputting a two-phase signal indicating the moving direction and a switch on / off signal, two-phase signals from the rotary encoder in the X-axis direction and the rotary encoder in the Y-axis direction are used as signals indicating the coordinate input information according to the mouse interface. The signal and the on / off signal of the switch are restored by the restoring means of the receiving unit. Therefore, without providing a dedicated interface separately, you can connect the coordinate input signal from the receiving unit to the mouse interface that was connected to the conventional cable connection type mouse, and use it in the same way as the cable connection type mouse. it can.

A wireless coordinate input device according to a fourth aspect of the present invention is the wireless coordinate input device according to any one of the first to third aspects, wherein the first address setting means of the transmitting unit sets an address of the transmitting unit. At the same time, the second address setting means of the receiving unit sets the address of the receiving unit, and the determining unit of the receiving unit determines whether or not the address of the transmitting unit and the address of the receiving unit match. .

Therefore, according to the wireless coordinate input device of the invention of claim 4, the same address is set in the transmitting section and the receiving section, and parallel data including the address is parallel-serial converted from the transmitting section to an infrared signal. After receiving the infrared signal at the receiving unit and performing serial-to-parallel conversion, the data is received only when the determining unit of the receiving unit determines that the address included in the received parallel data matches the address of the receiving unit. Therefore, even if the wireless coordinate input device is used for each of a plurality of personal computers, by setting each wireless coordinate input device to a different address, interference and malfunction can be prevented.

[Brief description of drawings]

FIG. 1 is an external view of a personal computer system using a wireless coordinate input device according to an embodiment of the present invention.

FIG. 2 (a) is a perspective view of a wireless mouse of the wireless coordinate input device, and FIG. 2 (b) is a rear view of the wireless mouse.

FIG. 3 is a block diagram of the wireless mouse.

FIG. 4 (a) is a perspective view of a wireless mouse receiver of the wireless coordinate input device, and FIG. 4 (b) is a view of the wireless mouse receiver seen from the flat bus connector side.

FIG. 5 (a) is a perspective view of another wireless mouse receiver of the wireless coordinate input device.
FIG. 6B is a view of the wireless mouse receiver viewed from the circular bus connector side.

FIG. 6 is a block diagram of the wireless mouse receiver shown in FIGS. 4 and 5.

FIG. 7 is a diagram showing a format of parallel data transmitted from the wireless mouse.

FIG. 8 is a diagram illustrating a method of restoring a two-phase signal when the wireless mouse receiver has a positive electrode.

FIG. 9 is a diagram illustrating a method of restoring a two-phase signal when the wireless mouse receiver has a negative polarity.

FIG. 10 is a diagram illustrating a method of restoring a two-phase signal of the wireless mouse receiver.

FIG. 11 is a flowchart showing an address setting process of the wireless coordinate input device.

FIG. 12 is an external view of a conventional personal computer system using a mouse.

FIG. 13 is a circuit diagram of the mouse.

FIG. 14 is a timing chart of the coordinate input signal of the mouse.

[Explanation of symbols]

1 ... Wireless mouse, 2,4 ... Wireless mouse receiver, 3 ... PC main body, 11 ... Infrared LED, 12
… Left click switch, 13… Right click switch, 1
4 ... Ball, 15 ... Dry battery storage section, 16 ... Speed change switch, 20 ... Oscillation circuit, 21 ... X direction rotary encoder, 22 ... Y direction rotary encoder, 23 ... Left click switch circuit, 24 ... Right click switch circuit,
25 ... Rotary encode IC, 26 ... Speed changeover switch circuit, 27 ... Reset circuit, 28 ... Microcomputer, 29
... LED drive circuit, 30, 40 ... Receiver case, 31, 41 ... LED for indicator, 32, 42 ... Infrared transmission filter, 33 ... Flat bus connector, 43 ... Round bus connector.

Claims (4)

[Claims] 1. A wireless coordinate input device for inputting coordinate input information to an information processing device (3), comprising parallel-serial conversion means (28b) for converting parallel data representing the coordinate input information into serial data, and the parallel-serial conversion device. Conversion means
A transmitter (1) having an infrared transmitter (11, 29) for transmitting an infrared signal representing the serial data converted by (28b), and the infrared transmitter (11, 29) of the transmitter (1). ) Receiving the infrared signal from the infrared receiving means (51) and outputting a signal representing the serial data, and an infrared receiving means (51) receiving the signal representing the serial data from the infrared receiving means (51). And a receiving section (2) having serial-parallel conversion means (53a) for converting the data into parallel data. 2. The wireless coordinate input device according to claim 1, wherein the parallel data representing the amount of movement in the X-axis direction, the amount of movement in the movement direction and the Y-axis direction, the movement direction, and ON / OFF of the switches (12, 13). A wireless coordinate input device characterized in that the transmitting section (1) is provided with a parallel data creating means (28a) for creating a predetermined time interval. 3. The wireless coordinate input device according to claim 2, wherein the serial-parallel conversion means (5) of the receiving unit (2).
The receiving section (2) is provided with a restoring means (53b) for outputting a signal representing coordinate input information corresponding to the mouse interface of the information processing apparatus (3) based on the parallel data converted by the 3a). A wireless coordinate input device characterized by the above. 4. The wireless coordinate input device according to any one of claims 1 to 3, further comprising a first address setting means (28c) for setting an address of the transmitter (1). In addition to the above, the second address setting means (53c) for setting the address of the receiving unit (2) and the address of the transmitting unit (1) and the address of the receiving unit (2) are discriminated. The determining means (53d)
A wireless coordinate input device provided in (2).