JPH07152475A - Information device - Google Patents

Abstract

PURPOSE:To provide the information device capable of reducing the burden of an operator by easily correcting the position deviation due to the parallax of the operator. CONSTITUTION:The device is provided with an angle selection means 37 selecting the inclination angle of an input pen 3 to be used or pointed by its point touching the input surface, angle correction means 31 detecting the position deviation from the angle of the input pen 3 selected by the means 37, parallax correction selection means 38 selecting whether the input position deviation due to the parallax of the user should be corrected, or not, and parallax correction means 32 calculating the total position deviation correction value by calculating the position deviation due to the parallax and organically coupling it with the angle correction value calculated by the means 31 when the parallax correction is selected by the means 38.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information device such as a computer for contacting the tip of an input pen-type input device with an input surface to perform handwriting and manual instruction input, in particular, each time according to the operator. The present invention relates to an information device capable of easily correcting parallax.

[0002]

2. Description of the Related Art FIG. 13 is a block diagram showing an example of a conventional information device. In FIG. 13, the information device 51 includes an apparatus main body 2 having an input surface 26 (see FIG. 14) on the upper surface, and an outside of the apparatus main body 2, which is held by an operator and the pen tip is used as the input surface 26. It is composed of an input pen 3 and the like for touching and making entries and instructions.

Of these, the input pen 3 has a structure for transmitting a signal such as magnetic flux from a part thereof. An input pen drive unit 4 for generating the above signals and managing the operation of the input pen 3 and an input pen power supply unit 5 for supplying electric power to the input pen drive unit 4 are provided inside. ing.

On the other hand, the main body 2 of the apparatus is formed as a box by being covered with an exterior 6 (see FIG. 14) which is a casing, and the inside of the apparatus main body 2 is used for operation management of the entire apparatus. A control unit 7 for controlling, a display unit 8, a coordinate input unit 9, a power supply unit 24 and the like are provided. The coordinate input unit 9 is transparent and is arranged on the display unit 8 so as to overlap with the display unit 8.
And is positioned and set on the input surface 26.

The structure of the main body 2 of the apparatus will be further described.
Between the control unit 7 and the display unit 8, an operation is managed by the control unit 7, and a display control unit 10 for controlling the display unit 7,
A display memory 11 that stores the display content of the display unit 7 under the control of the display control unit 10 is provided.

Between the coordinate input section 9 and the control section 7, the X side of the coordinate input section 9 for receiving a signal from the input pen 3 is driven and the X side control for reading the signal generated in the coordinate input section 9 is performed. The unit 12 and the Y-side control unit 13 that drives the Y side of the coordinate input unit 9 and reads the signal generated in the coordinate input unit 9.
And controlling the operations of both the X-side control unit 12 and the Y-side control unit 13 and receiving the signals read by the X-side control unit 12 and the Y-side control unit 13 and instructing the X-side and Y-directions by the input pen 3. Coordinate operation control unit 1 for calculating each side coordinate value
4 are provided. The coordinate values calculated by the coordinate calculation control unit 14 are sequentially sent to the control unit 7, and the control unit 7
Then, various controls such as operation management of the coordinate calculation control unit 14 and the display control unit 10 are performed from this data.

A correction value storage unit 23 is secured in the control unit 7. Further, the control unit 7 includes a storage unit control unit A17 for controlling writing and reading of a hard disk (HDD), a floppy disk (FDD), a memory card (RAM), etc., including the storage device A15 and the storage device B16. And a storage unit control unit B18, an external communication control unit 19 that controls communication with the outside, an output control unit 20 that controls an output device such as a printer externally attached to the device body 2, and an external device that is also externally attached to the information device 51. An external device control unit A21, an external device control unit B22, and the like for controlling devices such as a keyboard that is used are connected, and the operation management of these devices can be simultaneously managed by the control unit 7.

Next, the operation of the information device 51 will be described. First, in this information device 51, prior to its use, a “correction” operation is performed to match the position between the display dot of the display unit 8 and the input coordinate of the coordinate input unit 9. That is, in this type of information device 51, the origins of the display unit 8 and the coordinate input unit 9 are normally aligned with each other at the time of assembly, and the display unit 8 and the coordinate input unit 9 are set on the input surface 26 in a state of being positioned. However, even when the assembly is completed, a slight deviation may occur in the combination work process of the display unit 8 and the coordinate input unit 9. Therefore, for the purpose of correcting this after assembling and for making the work mode suitable for the operator, the position between the display dot of the display unit 8 and the input coordinate of the coordinate input unit 9 is adjusted. I need some work. After the completion of the correction work, the result is stored in the correction value storage unit 23 in the control unit 7, and the coordinate input unit 9 after that is stored.
By correcting the input coordinate from, the input processing in consideration of this deviation is automatically performed on the information device 51 side.

To further explain a concrete example of this "correction" work, for example, immediately after the information device 51 is started up, or immediately after use, an item displayed on the input surface 26 is designated by the input pen 3. Then, the mode for “correction” is selected. Then, for example, as shown in FIG.
6, a plurality of bright spots 25 (five in this example) slightly larger than the tip portion of the input pen 3 are displayed on the display surface of the display unit 8.
Is displayed.

Next, the operator uses the input pen 3 to sequentially indicate the position of the coordinate input section 9 arranged on the display section 8 corresponding to the bright spot 25 displayed on the input surface 26.
Then, the X-side control unit 12 and the Y-side control unit 13 detect signals of coordinate positions sequentially designated by the coordinate input unit 9 and sequentially send them to the coordinate calculation control unit 14.
Further, the coordinate calculation control unit 14 receiving this signal sequentially calculates the X coordinate and the Y coordinate designated by the input pen 3, and sends them to the control unit 7 as coordinate data in sequence.

In the control unit 7, the received coordinate data is
The display unit coordinate data corresponding to the display element pitch of the display unit 8 is sequentially exchanged, and this is compared with the coordinate values of the plurality of bright spots 25 displayed on the display unit 8, and the average value of the differences, the approximate expression, etc. A correction amount for correcting the deviation between the display unit 8 and the coordinate input unit 9 is calculated from this, and this is stored in the correction value storage unit 23.

When the work of storing in the correction value storage unit 23 is completed, thereafter, the coordinate input unit 9 is instructed by the input pen 3 and the coordinate calculation control unit is operated via the X side control unit 12 and the Y side control unit 13. The designated coordinate data sent from 14 to the control unit 7 is
In the control unit 7, after the display coordinate data is converted into the display coordinate data, the correction amount stored in the correction value storage unit 23 is added to calculate the corrected display coordinate data, and then the control unit 7 transfers the display coordinate data to the display control unit 10. It is sent and displayed on the display unit 8. In addition, in this example, the structure in which the coordinate input unit 9 is arranged on the display unit 8 is shown, but the same is true when the coordinate input unit 9 is arranged below the display unit 8. .

[0013]

By the way, in the structure of the conventional information device 51 described above, it is assumed that the operator performs the correction work by instructing the input pen 3 vertically with respect to the coordinate input section 9. ing. However, in the actual input work of the operator, the work is easy and the input surface 2
In order to make it easier to see 6, the input pen 3 is often used at an angle, and since there is some distance between the display unit 8 and the coordinate input unit 9, there is a gap due to parallax due to the line of sight. Will occur. Therefore, in order to match the positions of the display unit 8 and the coordinate input unit 9, it is necessary to sufficiently consider these deviations, and this kind of "correction" work cannot be easily done, which is troublesome. there were.

Further, even if the angle of the input pen 3 is assumed to be adjusted, it does not cause much problem if the operator is always looking in the same posture from the same position. However, in the case where the work is performed with great care, for example, when performing the correction work, the input pen 3 is pointed at an angle different from the posture or the like actually used after the adjustment. In many cases, the face is brought close to the input surface 26 in order to instruct the center of the correction input point, and the correction is often not performed in the case of actual work.
Therefore, the adjustment work is rarely completed once, and the correction work is often required to be performed a plurality of times.

Further, on the input surface 26 of the information device 51, the operator does not change the angle at which the input pen 3 is used, whether the working position is on the front side, the back side, the left side or the right side. Also, most of the time, it does not move the head or neck, but just moves the line of sight. For this reason, parallax due to the line of sight occurs depending on the input position, and each time the operator interrupts the work, redoes the input work, or moves the head or neck to make the work easier, It is necessary to say that the information device 51 is moved closer to the surface 26 or moved. As a result, there is a problem that work efficiency is lowered and a mental and physical burden is imposed.

The present invention has been made in view of the above problems, and an object thereof is to provide an information device capable of easily correcting the positional deviation due to the parallax of the operator and reducing the burden on the operator. To do.

[0017]

According to the present invention, an object is provided with an input surface in which a coordinate input section and a display section are stacked, and the pen tip of an input pen is brought into contact with the input surface for writing or writing. In the information device for instructing, an angle selecting means for selecting an inclination angle of the input pen held by an operator,
An angle correction unit that detects a position shift from the angle of the input pen selected by the angle selection unit and corrects it, and a parallax that selects whether or not to correct the position shift of the input position based on the parallax of the user. When parallax correction is selected by the parallax correction propriety selection unit and the parallax correction propriety selection unit, the positional shift due to parallax is calculated, and the angle correction value calculated by the angle correction unit is organically combined. This is achieved by providing a parallax correction unit that calculates a comprehensive positional deviation correction value.

[0018]

According to this, when the operator selects the inclination angle of the input pen held by the operator, it is possible to detect and correct the positional deviation expected from the angle of the input pen, and at the same time, to make a correction of the user. If you select the position shift correction by parallax, calculate the position shift due to this parallax, organically combine this position shift and the angle correction value, calculate the total position shift correction value, and automatically correct can do.

[0019]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the entire information device shown as an embodiment of the present invention, and FIG. 2 is a perspective view of the entire information device. Further, in FIG. 1 and FIG.
13 to 15 are denoted by the same reference numerals as those in FIGS.
Shows the same thing as.

The structural difference from the conventional information apparatus shown in FIGS. 13 to 15 is that the apparatus of this embodiment has an angle correction means 31, a parallax correction means 32, and an input in the control section 7. The inter-display distance storage means 33, the angle selection means 37, and the parallax correction availability selection means 38 are provided, and the angle storage means 34 and the correction value storage means A35 connected to the angle correction means 31 and the parallax correction means 32 are connected. Is provided with the corrected correction value storage means B36,
The other structures are formed substantially the same.

Next, the operation of the information apparatus 1 according to this embodiment will be described. First, when the operator starts up the information device 1, a screen such as that shown in FIG. 3 is displayed on the display unit 8 on the input surface 26, that is, the characters "Please select an item.", "Word processor" and "Memo input". "," Freehandwriting ",
“Angle correction, parallax correction” and “data input / output” are displayed.

Therefore, the operator presses the "angle correction" in the "angle correction, parallax correction" displayed on the input surface 26 against the pen tip of the input pen 3 from above the coordinate input section 9. Touch and give instructions. Then,
The X-side control unit 12 and the Y-side control unit 13 detect that the coordinate input unit 9 is instructed by the input pen 3, read the signals on the X and Y sides, respectively, and send them to the coordinate calculation control unit 14.

The coordinate calculation control section 14 calculates the coordinates of the position designated by the input pen 3 on the X and Y sides from the received signal and sends the coordinate data to the control section 7.

The control unit 7 converts the received coordinate data into display coordinate data corresponding to the display pitch of the display unit 8. After that, the items designated by the input pen 3 are specified by comparing with the display coordinate data of each item currently displayed on the display unit 8. By this operation, when the control unit 7 confirms that the “angle correction” item is selected, the control unit 7
The angle correction means 31 inside is operated. Then, the angle correction means 31 operates the angle selection means 37, and a program pre-installed in the angle selection means 37 causes a screen as shown in FIG. Please select one direction angle. "
Characters and figures and "Please select one vertical angle of your pen." Are displayed on the display unit 8 at the same time, and the operator can input the vertical and horizontal directions with the input pen. The state of waiting for the selection of the angles 3 to be used is entered.

Next, the operator uses the input pen 3 to
The position of the coordinate input unit 9 corresponding to the item displayed on the screen on the input surface 26 shown in FIG. 4 is touched to give an instruction. If the horizontal angle of + 45 ° and the vertical angle of −60 ° are selected in FIG. 4, the coordinate value on the coordinate input unit 9 designated by the input pen 3 is the X side control unit. 12
And the Y-side control unit 13 for X, Y in the coordinate calculation control unit 14.
The coordinates are exchanged, and the coordinates are input to the control unit 7 as data.

Further, the control unit 7 which has received this data
Compares the data converted into the display coordinate data with the display coordinate data of the displayed item, and determines the item designated by the input pen 3. Then, the selected item is stored in the angle storage means 34 in each of the horizontal direction and the vertical direction. Here, the control unit 7 can recognize that the operator uses the input pen 3 by inclining the input pen 3 horizontally by + 45 ° and vertically by −60 °, respectively. From the selected item, the angle of the input pen 3 can be recognized. An angle correction value that corrects is calculated. An example of the calculation of the correction amount here will be described with reference to FIGS.
It is calculated in the order of (c).

(A) First, in the information device 1, the display surface 8a of the display unit 8 and the input surface 26 on the coordinate input unit 9 are preset.
If the distance between and is Δr, then the value of this distance Δr is obtained in advance and stored in the inter-input-display distance storage means 33 of the control unit 7. Here, when the value of the distance Δr is obtained, for example, as shown in FIG. 5, when the coordinate input unit 9 is arranged on the display unit 8 in a superimposed manner, the thickness of the coordinate input unit 9 is t.
1. If the distance from the display exterior 8B of the display 8 to the display surface 8a is t2, it can be calculated by the following equation (1).

[0028]

[Formula 1] Δr = t1 + t2 (1)

(B) If the vertical direction is -60 °, the coordinate input section 9 is displayed on the display surface 8a on the display section 8 when the coordinate input section 9 is pointed by the input pen 3 as shown in FIG. The position is shifted in the positive direction (upper side) of the Y axis. Therefore, the correction in the Y-axis direction (vertical direction) is performed in the Y-axis (vertical direction).
It is sufficient to add the value calculated by the following equation (2) to the direction data.

[0030]

[Formula 2] Δy = Δr · sin (−60 °) / cos (−60 °) ≈−1.73 × Δr (2)

(C) Similarly, if the horizontal direction is + 45 °, it shifts to the negative direction (left side) of the X axis as shown in FIG. 6, and the correction in the X side direction (horizontal direction) is performed on the X axis. It is sufficient to add the value calculated by the following equation (3) to the data in the (horizontal direction).

[0032]

[Expression 3] Δx = | Δy | · cos 45 ° / sin 45 ° ≈ 1.73 × Δr (3)

As described above, when the operator selects the use angle of the input pen 3 and calculates the correction amounts in the vertical and horizontal directions, the use angle is stored in the angle storage means 34, and the horizontal and vertical directions are stored. The respective correction amounts are stored in the correction value storage means A35. When the information is stored in the angle storage unit 34 and the correction value storage unit A35, the information device 1 then operates the parallax correction unit 32 in the control unit 7. Then, the parallax correction unit 32 operates the parallax correction availability selection unit 38, the program installed in advance in the parallax correction availability selection unit 38 is operated, and a display as shown in FIG. In other words, "Do you want to carry out parallax correction? If you do, please indicate" Yes ", and if not, please specify" No ". Characters and figures are displayed. Therefore, the operator first selects whether or not to perform “parallax correction”. Here, when the operator touches the position of "do" in FIG. 7 with the pen tip of the input pen 3 to give an instruction, then the display screen as shown in FIG. 8, that is, "the shape closest to your usage condition" is displayed. Please indicate the point in the lower frame with and the character and figure are displayed. At this time, the information device 1 determines the coordinate value on the coordinate input unit 9 corresponding to the coordinate input unit 9 from the displayed display point P. Then, this coordinate value is set to (x0, y0).

Next, the operator designates the central display point P on the input surface 26 of the information device 1 according to the display of FIG. Note that, here, the posture in which the operator instructs the information device 1 is generally used with the input surface 26 of the information device 1 looking down from a constant height h.

Then, the display point P is set by the operator.
When the command is given, the control unit 7 calculates the coordinate value of the position where the operator has designated the coordinate input unit 9. At this time, between the coordinate value (x0, y0) corresponding to the display point P and the coordinate value of the position designated by the operator, the use of the input pen 3 represented by the above equations (2) and (3) is used. Although there will be a difference in the amount of deviation (Δx, Δy) due to the angle,
Actually, in addition to this, the operator may enter the input surface 2 of the information device 1.
There is a shift amount due to parallax in relation to the position where 6 is viewed. Here, when the operator uses the information device 1,
In particular, in the case of the operation of instructing the coordinate input unit 9, the operator does not move the head one by one, but only moves the line of sight. Further, since the input range and the display range of the input surface 26 of the information device 1 are defined to be not too large in order to improve the portability of the information device 1,
The tendency is even stronger.

Next, the shift due to this parallax will be further described with reference to FIGS. 9 to 12. First, FIG. 9 shows the parallax in the X-axis direction, and FIG. 10 shows the parallax in the Y-axis direction. In FIGS. 9 and 10, when the point for parallax correction is point a, the operator's line of sight in the X-axis direction is within a certain angle from the center to the left and right as indicated by the dotted line in FIG. Similarly, in the Y-axis direction, the line of sight of the operator moves up and down within a certain angle as indicated by the dotted line in FIG.

Therefore, in the X-axis direction, when it is attempted to specify a point a for correction as shown in FIG.
The point a1 at which the instruction is actually input is separated from the point a by Δx. Further, when the instruction input point a1 is instructed by the input pen 3, a deviation Δx due to the use angle of the input pen 3 is generated.
For the actual reading point, the coordinate value of point a2 deviated by Δx is calculated. Here, the input display range of the information device 1 on the X-axis side is set to L
As x, when the front left end of the input surface 26 in the information device 1 is set as the origin of the X coordinate, the correction designated point a is at the center of the input surface 26, that is, at the position Lx / 2, and the right end is L.
It is in the x position. Therefore, when the operator tries to point the point b (0, *) on the left side of the center point a of the input surface 26 with the input pen 3 in FIG. 11, the point b1 is pointed by parallax. Further, the actual calculated coordinate value is at the point b2 because there is a deviation Δx due to the use angle of the input pen 3.

Here, the coordinate value of point b2 is (x2, *),
However, if * is arbitrary, the coordinate value of x2 at the point b2 can be obtained by the following equation (4).

[0039]

## EQU00004 ## x2 = x0 + .DELTA.sx2 (shift due to parallax)-. DELTA. (Shift due to angle of input pen) (4)

Here, {0} of the first term on the right side of the equation (4)
Is the coordinate value of the position that the operator actually wants to input, so to obtain it from the actually detected coordinate value, the following equation (5)
Becomes

[0041]

## EQU00005 ## 0 = x2-[(. DELTA.sx2-.DELTA.x) /] (5)

Therefore, the value that can be expressed by the above equation (5) should be treated as the correction amount. Furthermore, x
Since 0, x2 and Δx have already been calculated, the correction value can be calculated by calculating Δsx.

Assuming that the position viewed by the operator is the point S, the distance from the point S to the input surface 26 is preset as h as described above, and the input-display distance storage means 33 is provided.
It is stored in. As a result, in FIG.
It can be seen that the triangle connecting the points b, b, and a and the triangle connecting the points b, b1, b2 are similar figures. Therefore, from the ratio of the sides of the triangle, the following equations (6), (7) Using △ sx2
Can be calculated.

[0044]

(H + Δr): Δr = ([L / 2] −0): Δsx2 (6)

[0045]

[Expression 7] ∴Δsx1 = {Δr × ([L / 2] −0)} / (h + Δr) (7)

Further, in the above equation (5), since all the values on the right side are calculated and stored as described above, they can be easily calculated and the parallax correction value can be calculated. That is,
Although the X-axis side coordinate of the display point is {0} in the above, if an arbitrary coordinate value xa (where 0 <xa <L / 2) is set, Δ
sx is expressed by the following equation (8).

[0047]

Δsx = {Δr × ([L / 2] −xa)} / (h + Δr) (8)

Therefore, the above equation (8) is applied to the correction value storage means B3.
Store in 6. Further, the correction amount calculation formula [formula represented by the above formula (5)] is also stored.

Next, when the operator designates the display point at the center (point a) of the input surface 26 in the information device 1, since the operator looks down from above, the use of the input pen 3 as shown in FIG. Although there is a deviation Δx due to the angle, there is no deviation due to parallax. Therefore, the point actually calculated is a
There are two points, the coordinates are (x2, *), but * is arbitrary, and the coordinates of the point a that the operator wants to input are (L / 2,
Since it can be expressed by the following equation (9), the correction is completed only by adding Δx to the calculated coordinate value.

[0050]

[Equation 9] L / 2 = x2 + Δx (9)

Next, on the right side from the center (point a) of the information device 1, the operator's line-of-sight direction and the angle pointing the input pen 3 are opposite, as shown in FIG. When (L, *), the point c1 is indicated by the input pen 3 due to parallax, and a deviation Δsx2 and a deviation Δx due to the use angle of the input pen 3 also occur. Here, the coordinate value of the point c1 designated by the input pen 3 is (x3,
*), Where * is arbitrary, and the actually calculated coordinate value of the c2 point is (x3, *), the following equations (10) and (1
It can be represented by 1).

[0052]

L = x3 + [(Δx + Δsx2) /] (10)

[0053]

L = x3 + Δx + Δsx2 (11)

The value represented by the above equation (10) can be treated as a correction amount, as in the above equation (5). Further, in order to calculate the value Δsx2 of the above equations (10) and (11), the points c, c1 and c2 which are similar to the triangle connecting the points S, a and c in FIG. It can be calculated by the following equations (12) and (13) from the ratio of the sides of the triangle connecting the two.

[0055]

(H + Δr): Δr = (L- [L / 2]): Δsx2 (12)

[0056]

(13) ∴Δsx2 = {Δr × (L- [L / 2])} / (h + Δr) (13)

As described above, the right side of the above equation (13) is
Since it is all calculated or stored data,
Δsx2 can be easily calculated. In the above equation, although the point c is the right end portion (L, *) of the input surface 26 in the information device 1, the coordinates on the X-axis side of the designated point are arbitrary points xb (L / 2 <x
When b <L), the following equation (14) is obtained.

[0058]

Δsx2 = {Δr × (L−xb)} / (h + Δr) (14)

Then, since the shift due to the parallax can be calculated by the above equation (14), the above equation (14) and the above equation (1)
0) is stored in the correction value storage means B36.

That is, when the input positions are summarized as x, when 0 <x <(L / 2−x), when x = L / 2, and when (L / 2) <x <L, The parallax correction amount is as shown in the following a), b), and c).

A) When 0 <x <(L / 2−x): Parallax correction amount = {Δr × [(L / 2) −x]} / (h + Δ
r) Angle correction amount = Δx

B) When X = L / 2: Parallax correction amount = 0 Angle correction amount = Δx c) When (L / 2) <x <L: Parallax correction amount = {Δr × (L−x )} / (H + Δr) angle correction amount = Δx total correction amount = (parallax correction amount) + (angle correction amount) = {[Δr × (L−x)] / (h + Δr)} − Δ x

Therefore, when performing the correction, the information device 1
The parallax correction means 32 in the control unit 7 determines which of the above a), b), and c) is applicable from the instructed x coordinate, and based on the result, the correction value storage means A35 and the correction value are stored. The correction amount according to the use angle of the input pen 3, the input range value, and the distance between the input surface (input surface 26) of the coordinate input unit 9 and the display surface 8a of the display unit 8 stored in the storage unit B36 are read out, and then, The x-axis side correction is completed by applying the above formula to calculate the parallax correction amount, calculating the total correction amount, and adding the calculated correction amount to the actually calculated coordinate values.

Next, the parallax on the Y-axis side will be as shown in FIG. 12 in this case. That is, when the correction point point a is displayed on the display unit 8 (input surface 26) on the right side (the frontmost side for the operator) in FIG. 12 as the origin in the Y-axis direction, the parallax is generated at the operator's viewing position. Because of the deviation, the point actually indicated by the operator is a1 point. However, since there is a deviation due to the angle of use of the input pen 3, the coordinates calculated by the information device 1 are point a2. Here, the coordinates of the points a, a1, and a2 are (*, Ly / 2), (*, y2), (*, y
3) However, * is optional and the amount of deviation due to parallax is △
Letting sy1 be the deviation amount due to the use angle of the input pen 3, Δy can be expressed as the following equation (15).

[0065]

Ly / 2 = y3 + Δsy1 = (y2-Δy) + Δsy1 (15)

In the above equation (15), values other than the second term Δsy1 on the right side are calculated values, and the input pen 3
The deviation Δy due to the use angle is included in the calculated Δy1 when Δsy1 is obtained, and therefore Δsy1 may be used as the correction amount.
Here, Δsy1 can be obtained from the similar shape of the triangle used to calculate the correction amount in the x-axis direction.
That is, the operator's viewpoint is point S, and point S and the input surface 26
Let h be the height between them and e be the origin position of the input surface 26 in the Y-axis direction, and a triangle connecting points S, e and a, and a
Since the triangle connecting 1 point, a2 point and a point is similar,
Δsy1 can be calculated from the ratio of the sides of the triangle. The following formula (1
See 6), (17) and (18).

[0067]

(H + Δr): Δr = (Ly / 2): Δsy1 (16)

From the above equation (15),

(H + Δr): Δr = [(y2-Δy) + Δsy1]: Δsy1 (17)

[0069]

[Equation 18] ∴ Δsy1 = (y2-Δy) / h (18)

Next, the position to be designated in FIG. 12 is designated as point d, the shift due to parallax is sy2, the position actually designated by the operator is d1 point (*, y1), and the actually calculated point is d2 (*, If y2), there is a relationship of the following expression (19).

Ly = y3 + Δsy2 = (y2-Δy) + Δsy3 (19)

Similar to the above, Δsy2 is a triangle with a similar shape.
And ask

(H + Δr): Δr = Ly: Δsy2 (20)

From the above equations (19) and (20),

(H + Δr): Δr = (y2-Δy) + Δsy3: Δsy2 (21)

[0073]

[Equation 22] ∴Δsy2 = (y2-Δy) / h (22)

Calculation of the parallax correction amount at an arbitrary point from the above equations (18) and (22) is represented by the following equation (23).

[Expression 23] Δsy = (y−Δy) / h (23)

Further, as described above, since the deviation Δy due to the use angle of the input pen 3 is smaller than the above parallax correction amount,
The value calculated by the above equation (23) may be used as the correction amount. Therefore, the above equation (23) is applied to the correction value storage means B3 in the control unit 7.
Store in 6.

However, in FIG. 12, assuming that point e is a point to be instructed, a deviation Δy due to the angle of use of the input pen 3
However, the deviation Δsy3 due to parallax becomes larger. Therefore, the parallax correcting unit 32 stores the Y-axis side in the above equation (23) stored in the correction value storing unit B36.
From the correction value storage means A35, the deviation amount due to the use angle of the input pen 3, the height setting value of the operator's viewpoint, and the distance between the display unit 8 and the coordinate input unit 9 are stored in the correction value storage unit A35.
And the parallax correction amount is calculated by the above equation (23) from the coordinate position where the designated position is calculated, and the deviation Δ due to the use angle of the input pen 3 is calculated.
If y is smaller than Δy, Δy is used as a correction amount, and if it is larger than Δy, the parallax correction amount calculated by the above equation (23) is added as a correction value to the calculated coordinate value of the designated position. As described above, in addition to the positional deviation correction based on the usage angle of the input pen 3, the positional deviation based on the parallax of the operator can be corrected.

In the above embodiment, with respect to the Y-axis side,
It is assumed that the operator's point of view is directly above the origin, but it may be at a position closer to the origin (a position in the negative direction on the Y axis). In this case, it can be implemented by adding a means for allowing the operator to select or set a distance deviated from the Y-axis direction when the parallax correction means 32 operates. Further, by adding a means for similarly selecting or setting the height of the operator's viewpoint, the accuracy and operability can be improved.
Further, in the application of the information device 1, handwritten characters may be input and character recognition may be performed in addition to selection of items. In such a case, unlike the case of selecting an item or the like when writing characters, the operator often writes characters having a large number of strokes, and often brings the viewpoint closer to the information device 1 to perform work. In such a case, if the above-mentioned parallax correction is performed, the shift may become larger depending on the case. Therefore, in this embodiment,
When the information device 1 operates an application such as character recognition, the control unit 7 can recognize it and calculate coordinate data without parallax correction.
With this configuration, it is possible to perform parallax correction without burdening the operator or to automatically switch whether or not to improve operability.

[0078]

As described above, according to the information apparatus of the present invention, when the operator selects the tilt angle of the input pen, the positional deviation expected from the angle of the input pen is detected. If the user selects the position shift correction based on the parallax of the user, the position shift based on the parallax is calculated, and the position shift and the angle correction value are organically combined to make a comprehensive correction. A position shift correction value can be calculated and automatically corrected.
As a result, comprehensive positional deviation correction can be easily performed, the burden on the operator can be reduced, and the input accuracy can be improved.

[Brief description of drawings]

FIG. 1 is a configuration block diagram of an entire information device shown as an embodiment of the present invention.

FIG. 2 is a perspective view of the entire apparatus of this embodiment.

FIG. 3 is a diagram showing an example of a display state on an input surface in the apparatus of this embodiment.

FIG. 4 is a diagram showing an example of a display state on an input surface in the apparatus of this embodiment.

FIG. 5 is an explanatory diagram of a main part configuration of the device of the present embodiment.

FIG. 6 is a diagram for explaining a correction amount calculation method.

FIG. 7 is a diagram showing an example of a display state on the input surface of the apparatus of this embodiment.

FIG. 8 is a diagram showing an example of a display state on the input surface in the apparatus of this embodiment.

FIG. 9 is a diagram for explaining a correction amount calculation method.

FIG. 10 is a diagram for explaining a correction amount calculation method.

FIG. 11 is a diagram for explaining a correction amount calculation method.

FIG. 12 is a diagram for explaining a correction amount calculation method.

FIG. 13 is a configuration block diagram showing an example of a conventional information device.

FIG. 14 is a cross-sectional view of a main part configuration of a conventional device.

FIG. 15 is a diagram showing an example of a display state on an input surface of a conventional device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Information device 3 Input pen 7 Control part 8 Display part 9 Coordinate input part 26 Input surface 31 Angle correction means 32 Parallax correction means 33 Input display distance storage means 34 Angle storage means 35 Correction value storage means A 36 Correction value storage means B 37 angle selection means 38 parallax correction availability selection means

Claims (1)

[Claims] 1. An information device comprising an input surface in which a coordinate input portion and a display portion are stacked, and in which the pen tip of the input pen is brought into contact with the input surface to write or indicate, the operator holds the input pen by hand. An angle selecting means for selecting a tilt angle, an angle correcting means for detecting and correcting a positional deviation from the angle of the input pen selected by the angle selecting means, and a positional deviation correction of an input position due to a parallax of a user. Do or
Parallax correction propriety selection means for selecting whether or not to perform, when the parallax correction is selected by the parallax correction propriety selection means, calculates the positional deviation due to parallax, and the angle correction value calculated by the angle correction means An information device, comprising: a parallax correcting unit that organically combines the two and calculates a total positional deviation correction value.