JP2004013570A - Digitizer and coordinate recognition sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a digitizer that is inexpensive, excels in operability and can accurately read data on a measured object such as a drawing. <P>SOLUTION: The digitizer 30, which has a cursor 32 and a digitizer body 34 for transforming a position selected by the cursor 32 into a coordinate value on a coordinate set in a plane, comprises a coordinate recognition sheet 38 which is a transparent or semitransparent sheet placed for use on a measured object 31 so as to allow the measured object 31 to be viewed from above, and in which a coordinate value recognition indication 36 for coordinate recognition for bringing an arbitrary position on the measured object in a given coordinate value is formed in a coordinate position at a given interval corresponding to the given coordinate value. The cursor 32 comprises a camera 39 for picking up an image about the selected position. The digitizer body 34 comprises a transforming means 42 for transforming the selected position on the measured object 31 into a coordinate value according to the coordinate value recognition indication 36 in the image picked up by the camera 39. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a digitizer capable of capturing a figure or the like as digital data by representing a position designated by a cursor by a coordinate value.
[0002]
[Prior art]
2. Description of the Related Art A digitizer is a device that captures handwritten drawings as digital data, such as original drawings of clothing designs and map originals.
As described in Japanese Patent Application Laid-Open No. Hei 5-19938 and Japanese Patent Application Laid-Open No. Hei 6-59801, the structure of a conventional digitizer is provided so that an object to be measured such as a drawing can be placed thereon, and is arranged in a matrix. A grid plate on which the conductors are arranged, and a cursor provided to bring an electrical change to the matrix-like conductors of the grid plate by clicking an arbitrary position on the grid plate; In general, a position indicated by a cursor is represented by a coordinate value by measuring an electrical change of a conducting wire.
[0003]
When a handwritten drawing such as an original drawing of a clothing design or an original map is taken as data, in addition to the digitizer described above, the drawing is scanned by a scanner and taken into a computer as image data.
[0004]
[Problems to be solved by the invention]
As described above, the conventional digitizer requires a grid plate on which a matrix of conductive wires is arranged in order to represent the position indicated by the cursor by coordinate values.
However, since such a grid plate has a complicated structure, there is a problem that the entire digitizer must be very expensive.
[0005]
Such a conventional grid plate is generally installed so that its plane faces in a vertical direction in order not to take up an installation space. However, such a grid plate installation method requires a user to bend his / her waist when working at a position below the eye level, resulting in poor workability and difficult work. There was also. In addition, there is also a problem that such a grid plate is heavy and is difficult to carry.
[0006]
Further, when a drawing is captured as image data using a scanner, the original drawing of the dress design, the original drawing of the map, and the like are quite large, so a scanner that can scan such a large drawing must be used. However, since a large scanner capable of working on a flat surface is very expensive, a scanner of a type in which the original drawing is drawn in by a roll wrapping method and scanned is often used. Such a roll-involving scanner has a problem that a deviation may occur at the time of insertion of the original drawing, and accurate reading of data may not be performed.
[0007]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a digitizer which is inexpensive, has good workability, and can accurately read data of an object to be measured such as a drawing.
[0008]
[Means for Solving the Problems]
According to the digitizer of the present invention, a cursor for selecting an arbitrary position on the plane of the device under test, and a digitizer main body for converting the position selected by the cursor to coordinate values at coordinates set on the plane A digitizer having a transparent or translucent sheet which is used by being placed on the object to be measured, and which allows the object to be viewed from above, wherein an arbitrary position of the object to be measured is predetermined. The coordinate value recognition display for recognizing the coordinates to match the coordinate values includes a coordinate recognition sheet formed at coordinate positions at predetermined intervals corresponding to predetermined coordinate values, and the cursor is selected. A camera for capturing an image around the position, wherein the digitizer main body positions the selected position of the device under test based on the coordinate value recognition display in the image captured by the camera. It is characterized by comprising a conversion means for converting the value.
By adopting this configuration, a grid plate on which matrix-like conductive wires are arranged is not required, and the entire structure can be simplified and provided as an inexpensive digitizer. In addition, since the work can be performed anywhere that the coordinate confirmation sheet can be placed, the work can be performed on a flat surface such as a desk, and the physical burden on the operator can be reduced. it can.
[0009]
Further, after the operation starts, the conversion means sets the coordinate value recognition display existing in the image taken at the position selected by the cursor first as the origin, and moves the cursor from the position selected by the cursor first. After that, the coordinate value recognition display existing in the image photographed at the position selected by the cursor is converted into a coordinate value centered on the origin based on the relative position from the coordinate value recognition display set at the origin. Then, the selected position of the device under test is converted into coordinate values.
According to this configuration, it is possible to determine the coordinate value with the first selected position as the origin, without having to assign a coordinate value to each coordinate value recognition display on the coordinate recognition sheet in advance.
[0010]
Further, in the coordinate value recognition display of the coordinate recognition sheet, coordinate values in the coordinate recognition sheet are set in advance, and the coordinate values are assigned to the respective coordinate value recognition displays. It is characterized in that it is formed as a specific coordinate value recognition display which is displayed so that a value can be specified.
According to this, even if the coordinate value is not determined from the relative position from the origin, only by reading the coordinate value recognition display at the selected position, the position is specified as the previously allocated coordinate value. , Coordinate values can be easily recognized.
[0011]
The specific coordinate value recognition display is characterized in that a bar code or a bit pattern representing each coordinate value is formed at a corresponding position.
By adopting this configuration, the barcode or the bit pattern formed at the selected position is photographed and read, so that the coordinate value of the selected position can be easily specified.
[0012]
Further, as the specific coordinate value recognition display, the vertical line and the horizontal line, or the vertical line and the horizontal line in the square grid configured by arranging intermittently formed vertical line and the intermittently formed horizontal line Is drawn with a bar code or a bit pattern representing the coordinate value of each vertical line and the coordinate value of each horizontal line, respectively, and the bar code or the bit pattern of the vertical line and the horizontal line at the selected position is photographed. By reading the coordinates, the coordinate value of the selected position can be easily specified.
[0013]
According to the coordinate value recognition display, which is formed of a material responsive to infrared light or ultraviolet light, even when the line of the measured object and the coordinate value recognition display are likely to be confused, infrared light or infrared light or By irradiating the ultraviolet rays, the coordinate value recognition display can be distinguished from the line of the object to be measured and emerge. Therefore, the measured object can be surely adjusted to the coordinate value.
[0014]
Since the cursor is provided with an infrared irradiation device or an ultraviolet irradiation device, even when the line of the object to be measured is likely to be confused with the coordinate value recognition display, the coordinate value recognition display is displayed. It can be easily distinguished and emerged from the line of the object to be measured.
Further, when the cursor is provided with a visible light irradiation device, the object to be measured and the coordinate value recognition display are brightly illuminated, so that the burden on the eyes of the operator can be reduced, and the cursor can be used for coordinate recognition. Depending on the configuration of the sheet, the coordinate value recognition display can be distinguished from the line of the object to be measured and raised.
[0015]
According to the coordinate recognition sheet according to the present invention, a sheet used when using a digitizer that converts an arbitrary position on the plane of the object to be measured into coordinate values in coordinates set on the plane, Coordinate value recognition display for recognizing coordinates in order to match an arbitrary position of the measured object with predetermined coordinate values is formed at coordinate positions at predetermined intervals corresponding to predetermined coordinate values. I have.
By adopting this configuration, it is possible to easily convert data of a drawing or the like into coordinate values by a digitizer with a simple configuration.
[0016]
Further, the coordinate values in the coordinate recognition sheet are set in advance, and the coordinate values are assigned to each coordinate value recognition display, and each coordinate value recognition display is displayed so that each coordinate value can be specified. A specific coordinate value recognition display is formed.
According to this configuration, even if the coordinate value is not determined from the relative position from the origin, the position is specified as the coordinate value allocated in advance by simply reading the coordinate value recognition display at the selected position. Therefore, the coordinate values can be easily recognized.
[0017]
The specific coordinate value recognition display is characterized in that a bar code or a bit pattern representing each coordinate value is formed at a corresponding position.
According to this, by capturing and reading the barcode or the bit pattern formed at the selected position, the coordinate value of the selected position can be easily specified.
[0018]
Further, as the specific coordinate value recognition display, a vertical scale and a horizontal line orthogonal, or a vertical scale formed intermittently and a horizontal scale formed intermittently, the vertical scale, the vertical lines and the respective vertical lines The horizontal line is drawn by a bar code or a bit pattern representing the coordinate value of each vertical line and the coordinate value of each horizontal line.
You.
According to this configuration, the bar code or the bit pattern of the vertical line and the horizontal line at the selected position is photographed and read, so that the coordinate value of the selected position can be easily specified.
[0019]
The coordinate value recognition display is characterized by being formed of a material responsive to infrared rays or ultraviolet rays.
According to this configuration, even when the line of the device under test and the coordinate value recognition display are likely to be confused, the coordinate value recognition display is distinguished from the line of the device under test by irradiation with infrared rays or ultraviolet rays. Can be made. Therefore, the measured object can be surely adjusted to the coordinate value.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
(1st Embodiment)
First, the overall configuration of the digitizer will be described with reference to FIG.
As described in the related art, the digitizer 30 captures, as data, a handwritten drawing (hereinafter, referred to as an object to be measured) such as an original drawing of a clothing design or an original map.
The digitizer 30 includes a cursor 32 for selecting an arbitrary position on the DUT 31, a digitizer body 34 to which the cursor 32 is connected by a cable 33 or wirelessly connected by radio or the like, and It is a transparent (not necessarily completely transparent) sheet placed thereon, on which a coordinate value recognition display 36, which is a so-called square scale composed of a number of vertical and horizontal lines that intersect at right angles at a certain distance, is drawn. And a coordinate recognition sheet 38 (hereinafter sometimes simply referred to as a transparent sheet).
[0021]
The cursor 32 has a built-in CCD camera 39. The CCD camera 39 can take an image of the DUT 31 visible through the transparent sheet 38 and the coordinate value recognition display 36 drawn on the transparent sheet 38 together. The photographed image data is transferred to the digitizer body 34.
The digitizer body 34 has an interface 41 for receiving the image data transferred from the cursor 32, a monitor 40 for displaying the image data branched from the interface 41, and analyzing the image data from the interface 41. Conversion means 42 for converting the selected position of the DUT 31 into coordinate values on the coordinate value recognition display 36 based on the coordinate value recognition display 36 in the image, and converting the coordinate values converted by the conversion means 42 A storage means 43 such as a hard disk or a ROM for storing is provided. The conversion means 42 is specifically composed of a CPU for executing a predetermined process based on a control program stored in a memory (not shown) in advance, a memory, and the like.
In addition, as the digitizer main body 34, a commercially available personal computer can be used.
[0022]
Next, the cursor will be described in detail with reference to FIGS.
The cursor 32 has such a shape that its central portion is gently raised in a mountain shape so that the operator can easily operate it by holding it with one hand.
The CCD camera 39 is built in front of the cursor 32 as described above. The CCD camera 39 is mounted in a direction in which the photographing direction is slightly obliquely forward and downward, and photographs the object 31 and the coordinate value recognition display 36 drawn on the transparent sheet 38 together. The mounting angle of the CCD camera 39 is movable, and the photographing position with respect to the cursor 32 may be made variable.
[0023]
The cursor 32 is provided with a light irradiation unit 46 that projects forward and emits light (including infrared light and ultraviolet light other than visible light). The light irradiation unit 46 is formed of a transparent member, guides light emitted from a light source (not shown) provided inside the cursor 32, and irradiates the light to the front of the cursor 32. The light irradiation unit 46 of the present embodiment is formed in an annular shape in front of the cursor 32, but is not limited to such a shape.
When the light irradiating unit 46 irradiates ordinary visible light in this way, the coordinate value recognition display 36 on the DUT 31 and the transparent sheet 38 is illuminated brightly, so that the burden on the eyes of the operator can be reduced.
When the light irradiating section 46 is capable of irradiating infrared rays or ultraviolet rays, if the coordinate value recognition display 36 of the transparent sheet 38 is made of a material that reflects infrared rays or ultraviolet rays, as will be described later, the coordinate value recognition display is made. Only 36 can be displayed. However, even when the light irradiation unit 46 emits visible light, the coordinate value recognition display 36 on the transparent sheet 38 can be made to emerge.
[0024]
In addition, the cursor 32 is provided with a cursor point 48 used as an aim when setting a target when the operator presses the cursor button 44. The cursor point 48 is formed on a transparent plate-shaped body 47 fitted into the annular light irradiation section 46.
However, the cursor point 48 need not always be provided. When the cursor point 48 is not provided as described above, the cursor point is displayed on the monitor 40. In such a case, the operator operates the cursor 32 while looking at the monitor 40 to find a position to be selected. Then, the operator can work while looking at only the monitor 40 without directly looking at the actual measured object 31 or the coordinate value recognition display 36.
[0025]
On the upper surface of the cursor 32, a cursor button 44 is attached. The cursor button 44 is provided for outputting an instruction signal for instructing the digitizer body 34 to convert a position corresponding to the cursor point 48 at that time into a coordinate value.
[0026]
Next, the transparent sheet 38 on which the coordinate value recognition display 36 is drawn will be described.
The transparent sheet 38 has a coordinate value such that a coordinate position can be recognized by processing such as printing, metal deposition, heat processing, machining, laser processing, or chemical processing on the surface of the sheet made of a material such as glass or plastic or other synthetic resin. A recognition display 36 is formed.
The specific coordinate value recognition display 36 is generally a square grid in which vertical lines and horizontal lines arranged at predetermined intervals are drawn, but only a point is placed at each corresponding coordinate position. It may be drawn, or a cross-shaped mark may be drawn around each corresponding coordinate position.
[0027]
The operation of the digitizer having the above-described configuration will be described with reference to FIG. FIG. 4 shows the transparent sheet 38 viewed from above, where the horizontal axis is the x direction and the vertical axis is the y direction.
First, it is assumed that the operator first determines the position to be selected by the cursor 32 after the start of the work as α, and presses the cursor button 44 here. Then, the conversion means 42 of the digitizer main body 34 sets the designated position α to the origin (0, 0) of the coordinate value based on the designation signal from the cursor 32. The conversion means 42 stores the set coordinate values in the storage means 43.
[0028]
Next, the operator moves the cursor 32 to the next position to be selected according to the shape of the DUT 31. At this time, the conversion means 42 of the digitizer body 34 calculates the position from the origin of the coordinate value recognition display 36 (square scale) captured while the CCD camera 39 is moving to the next position. I do.
After the movement of the cursor 32 is completed, the operator presses the cursor button 44 at the position β to be selected next. Then, based on the instruction signal from the cursor 32, the conversion means 42 of the digitizer body 34 sets the coordinate value (5, 3) from the origin calculated during the movement of the cursor as the position of β at the indicated position β. Then, this value is stored in the storage means 43.
[0029]
As described above, while the cursor 32 moves to the next position to be selected, the conversion means 42 grasps the position from the origin of the coordinate value recognition display 36 in the image being photographed. It is not necessary to assign coordinate values to the coordinate value recognition display 36 in advance, the configuration of the transparent sheet 38 can be simplified, and the direction in which the transparent sheet is placed on the DUT 31 can be freely set. Can be.
[0030]
(Second embodiment)
Hereinafter, a second embodiment in which the configuration of the transparent sheet 38 is different from that of the above-described embodiment will be described. Note that the configurations of the cursor 32 and the digitizer main body are as shown in FIGS.
The feature of this embodiment is that a specific coordinate value is assigned in advance to each position of the coordinate value recognition display, and the coordinate value of the photographed position is calculated from the coordinate value recognition display photographed by the camera. It is instantly recognizable even if not. In this specification, such coordinate value recognition display capable of recognizing a specific position is referred to as specific coordinate value recognition display.
[0031]
An example of specific coordinate value recognition display on the transparent sheet according to the present embodiment will be described with reference to FIGS.
The specific coordinate value recognition display 55 shown in FIG. 5 is a grid graduation in which straight lines are arranged at predetermined intervals vertically and horizontally.
In the specific coordinate value recognition display 55, consecutive numbers are previously assigned to the horizontal line and the vertical line, respectively, and the position of the intersection of the two lines is specified from the number assigned to each line. It is provided so that.
In the example shown in FIG. 5, numbers A, B, C, D,... Are assigned to the straight lines arranged in the horizontal direction in order from left to right, and the position (coordinate value) in the horizontal direction is represented by the alphabet. Is specified by On the other hand, the straight lines arranged in the vertical direction are numbered 1, 2, 3, 4,... In order from bottom to top, and the position (coordinate value) in the vertical direction is specified by this number.
Therefore, the position represented by reference numeral 50 in FIG. 5 is specified as the coordinate value (E, 4).
[0032]
In the present invention, it is provided that if any one of the specific coordinate value recognition displays 55 is photographed, the coordinate value of the photographed position can be specified.
That is, each straight line on the transparent sheet 38 is formed by a bit pattern indicating the coordinate position of each straight line as indicated by reference numeral 52 when enlarged. In the figure, a vertically extending bit pattern represents a horizontal coordinate value “E”, and a horizontally extending bit pattern represents a vertical coordinate value “4”.
Therefore, even if the CCD camera 39 of the cursor 32 captures an arbitrary position, the digitizer body 34 reads this image data, analyzes the bit pattern indicating each coordinate value, and instructs the cursor 32. The position can be easily converted to a coordinate value.
[0033]
In FIG. 6, the specific coordinate value recognition display 55 does not mean that straight lines are arranged at predetermined intervals in the vertical and horizontal directions, and that a line that can be identified by the operator is formed only at the intersection of the straight lines. Therefore, there is no indication between the intersections. In other words, the specific coordinate value recognition display 55 shown in the drawing has a cross-shaped display 54 provided only at the coordinate position.
The cross-shaped display 54 is also provided in a manner similar to the above-described embodiment so that, when an arbitrary location is photographed, the coordinate value of the photographed location can be specified.
That is, numbers A, B, C, D,... Are assigned to the respective cross-shaped display positions arranged in the horizontal direction from left to right, and the horizontal position (coordinate value) is represented by this alphabet. Specified. On the other hand, numbers are assigned to the cross-shaped display positions arranged in the vertical direction from the bottom to the top in the order of 1, 2, 3, 4,..., And the vertical position (coordinate value) is represented by this numeral. Specified.
[0034]
When the cross-shaped display 54 at the position x shown in FIG. 6 is enlarged, a vertically extending bit pattern represents a horizontal coordinate value “E” as shown on the right side, and a horizontally extending bit pattern represents a vertical coordinate value. Represents "4".
Therefore, the position x is specified as the coordinate value (E, 4) in FIG.
[0035]
In the specific coordinate value recognition display 55 in FIG. 7, a bar code 56 is provided at the coordinate position. The bar code 56 indicates the coordinate position at each position, and is provided so that if an arbitrary one position is photographed, the coordinate value of the photographed position can be specified.
That is, numbers A, B, C, D,... Are assigned to the bar codes 56 arranged in the horizontal direction from left to right, and the horizontal position (coordinate value) is specified by this alphabet. You. On the other hand, numbers 1, 2, 3, 4,... Are assigned to the barcodes 56 arranged in the vertical direction in order from bottom to top, and the position (coordinate value) in the vertical direction is specified by this number. You.
When the barcode 56 at the position y shown in FIG. 7 is enlarged, it is formed as shown on the right side, and represents a coordinate value (E, 4).
[0036]
Note that, as an example of the above-described barcode, a two-dimensional barcode 58 may be used as shown in FIG. Other descriptions are the same as those described with reference to FIG. 7, and thus description thereof is omitted here.
As for the size of the barcode 56 and the two-dimensional barcode 58, if the length of one side is about 0.5 mm, the contents of the barcode can be identified, and the human eye without obstructing the DUT 31. This is preferable because it can be reliably recognized.
[0037]
As an operation example of the second embodiment, a case where the transparent sheet 38 adopting the specific coordinate value recognition display 55 shown in FIG. 7 is used will be described with reference to FIG.
First, it is assumed that the operator determines the position to be selected with the cursor 32 after starting the operation to be γ, and presses the cursor button 44 here. Then, based on the instruction signal from the cursor 32, the conversion means 42 of the digitizer body 34 processes the video from the CCD camera 39 and reads the barcode 56 at this position. At this position γ, the coordinate value (B, 2) is given in advance, and (B, 2) is described in the barcode 56. Therefore, the conversion unit 42 analyzes the barcode 56 and Are recognized as (B, 2). Then, the conversion means 42 stores the recognized coordinate values in the storage means 43.
[0038]
Next, the operator moves the cursor 32 to the next position to be selected according to the shape of the DUT 31. After the movement of the cursor 32 is completed, it is assumed that the operator next presses the cursor button 44 at the position δ.
At this time, the conversion means 42 of the digitizer body 34 reads the barcode 56 photographed at the position δ. At this position δ, a coordinate value (C, 4) is given in advance, and (C, 4) is described in the barcode 56. Therefore, if the coordinate value of this position δ is (C, 4) Be recognized. The conversion means 42 stores the recognized coordinate values in the storage means 43.
By repeating such an operation, conversion of the DUT 31 into coordinate values can be easily performed.
[0039]
Next, the configuration of the transparent sheet 38 applicable to both the first embodiment and the second embodiment will be described.
As described above, it is preferable that the coordinate value recognition display 36 has such a property that the contrast is increased when the infrared ray or the ultraviolet ray is irradiated.
Hereinafter, an example will be described specifically how to manufacture the transparent sheet 38 which has a high contrast when irradiated with infrared rays.
First, a metal plating plate is brought into close contact with the sheet, and the pattern of the coordinate value recognition display 36 is irradiated from above the sheet with a laser such as a YAG laser. The plating of the metal plating plate in the portion irradiated with the laser evaporates and is deposited on the sheet. The surface opposite to the side on which the metal plating is deposited is coated with an infrared absorbing film or a material that absorbs infrared rays.
The transparent sheet thus formed is subjected to work with the infrared absorbing side facing downward (the side in contact with the DUT 31). The recognition display 36 is recognized as a strong contrast image.
[0040]
Another manufacturing example of the coordinate value recognition display 36 that has a high contrast when irradiated with infrared rays will be described below.
A glass is used as the material of the sheet, a metal plate (without plating) is adhered under the sheet, and the pattern of the coordinate value recognition display 36 is irradiated from above the sheet with a YAG laser or the like. The laser beam is reflected by the metal plate, and the irradiated portion changes the glass into ground glass by heat.
A reflection agent that reflects infrared rays is applied to the frosted glass-like portion, and a surface opposite to the side on which the reflection agent is applied is coated with an infrared absorption film or a material that absorbs infrared rays.
Even with the transparent sheet formed in this manner, the work was performed with the infrared absorbing side facing down (the side in contact with the DUT 31). The coordinate value recognition display 36 is recognized as a strong contrast image.
[0041]
In the two cases described above, the coordinate value recognition display 36 itself is recognized as a high contrast image. However, a portion other than the coordinate value recognition display 36 is intensified by infrared rays or the like, and the coordinate value recognition display 36 can be easily recognized as an image because the coordinate value recognition display 36 does not emit light.
In such a case, a transparent electrode layer is formed on the transparent sheet 38, and the portion corresponding to the coordinate value recognition display 36 is removed by etching or the like. By doing so, the portions other than the coordinate value recognition display 36 are made to have high contrast by the irradiation of infrared rays by the transparent electrode.
[0042]
Further, as a configuration of the transparent sheet 38 applicable to both the first embodiment and the second embodiment, a configuration is described in which the coordinate value recognition display 36 has a high contrast even when a visible ray is irradiated. I do.
A transparent plastic sheet is used as the transparent sheet 38, and the coordinate value recognition display 36 is formed by laser processing the transparent plastic sheet with a CO2 laser or the like. A groove is dug in the portion of the coordinate value recognition display 36 on the surface of the plastic sheet by the laser, and the melted plastic is formed on both sides of the groove so as to rise.
When the transparent sheet 38 having such a configuration is irradiated with visible light, the light is irregularly reflected in the grooves and bulges formed as the coordinate value recognition display 38, and the coordinate value recognition display 38 appears to be raised with high contrast.
[0043]
In both the first embodiment and the second embodiment, the storage means 43 may store the image data itself at the position converted into the coordinate value.
By storing not only the coordinate position but also the image data, the digitizer 30 of the present embodiment not only converts the device under test 31 into the coordinate position, but also reads out the image data later to determine the position of the selected position. Correction is also possible.
It also has a function as a partial scanner at the selected position.
[0044]
Furthermore, in both embodiments described above, the cursor 32 has the camera 39 built therein.
However, as shown in FIG. 9, a configuration in which the cursor 32 does not include the camera 39 may be adopted.
Hereinafter, the cursor 32 shown in FIG. 9 will be described. The cursor 32 includes a cursor body 32a provided with a cursor button 44, a camera support 62 provided on the cursor body 32a, and a camera 39 held on the camera support 62.
[0045]
The camera support 62 includes a horizontal portion 63 extending horizontally from the cursor body 32a, and a vertical portion 64 extending upward from the tip of the horizontal portion 63.
The camera 39 is held at the front end of the vertical portion 64 with the lens directed downward. With such a configuration, the camera 39 can photograph the DUT 31 and the transparent sheet 38 from above. By photographing the DUT 31 and the transparent sheet 38 from above, it is possible to reliably grasp the positional relationship between the DUT 31 and the coordinate value recognition display 36 formed on the transparent sheet 38.
[0046]
In both the embodiments described above, the cursor and the digitizer main body are configured separately. However, the digitizer of the present invention may be one in which a cursor and a digitizer body are provided integrally (not shown).
In this way, by integrating the cursor and the digitizer main body and making it portable, it is possible for the operator to work more easily and to reduce the cost with a simple configuration.
[0047]
The worker may work while looking at the monitor 40, or may actually work while looking at only the transparent sheet 38 and the DUT 31 (including the case where the monitor 40 is watched supplementarily). May be either.
[0048]
Although various preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and it is a matter of course that many modifications can be made without departing from the spirit of the invention. .
[0049]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to the digitizer which concerns on this invention, the grid board which arrange | positioned the conducting wire becomes unnecessary, and can simplify the whole structure and can provide as a cheap digitizer. In addition, since the work can be performed anywhere that the coordinate confirmation sheet can be placed, the work can be performed on a flat surface such as a desk, and the physical burden on the operator can be reduced. it can.
[0050]
Further, according to the coordinate recognition sheet according to the present invention, it is possible to easily convert data of a drawing or the like into coordinate values by a digitizer with a simple configuration.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a digitizer according to the present invention.
FIG. 2 is a plan view showing a cursor, a coordinate recognition sheet, and an object to be measured.
FIG. 3 is a side view showing a cursor, a coordinate recognition sheet, and an object to be measured shown in FIG. 2;
FIG. 4 is an explanatory diagram illustrating a manufacturing process of a coordinate recognition sheet.
FIG. 5 is an explanatory diagram showing an embodiment of coordinate value recognition display.
FIG. 6 is an explanatory diagram showing another embodiment of the coordinate value recognition display.
FIG. 7 is an explanatory diagram showing another embodiment of the coordinate value recognition display.
FIG. 8 is an explanatory diagram showing another embodiment of the coordinate value recognition display.
FIG. 9 is an explanatory diagram showing another embodiment of the cursor.
[Explanation of symbols]
30 digitizer
32 cursor
32a cursor body
33 Cable
34 Digitizer body
36 Coordinate value recognition display
38 Coordinate Recognition Sheet
38 Transparent sheet
39 Camera
40 monitors
41 Interface section
42 conversion means
43 storage means
44 Cursor button
46 Light irradiator
47 Plate
48 cursor point
54 Cross display
55 Specific coordinate value recognition display
56 barcode
58 2D barcode
62 Camera support
63 horizontal part
64 vertical

Claims (13)

A cursor for selecting an arbitrary position on the plane of the device under test;
A digitizer body that converts a position selected by the cursor into coordinate values at coordinates set on a plane;
A transparent or translucent sheet that is used by being placed on the object to be measured and allows the object to be viewed from above, and matches an arbitrary position of the object to predetermined coordinate values. The coordinate value recognition display for recognizing the coordinates includes a coordinate recognition sheet formed at coordinate positions at predetermined intervals corresponding to predetermined coordinate values,
The cursor includes a camera that captures an image around a position to be selected,
The digitizer according to claim 1, wherein the digitizer body includes a conversion unit configured to convert a selected position of the device under test into coordinate values based on the coordinate value recognition display in an image captured by the camera. The conversion means,
After the operation starts, the coordinate value recognition display existing in the image taken at the position selected by the cursor first is set as the origin,
After moving the cursor from the position selected by the cursor first, the coordinate value recognition display present in the image taken at the position selected by the cursor is relative to the coordinate value recognition display set at the origin. 2. The digitizer according to claim 1, wherein the selected position of the device under test is converted into a coordinate value by converting the coordinate value to a coordinate value centered on the origin based on the position. The coordinate value recognition display of the coordinate recognition sheet,
The coordinate value in the coordinate recognition sheet is set in advance, and the coordinate value is assigned to each coordinate value recognition display, and each coordinate value recognition display is displayed so that each coordinate value can be specified. The digitizer according to claim 1, wherein the digitizer is formed as a coordinate value recognition display. 4. The digitizer according to claim 3, wherein the specific coordinate value recognition display is formed by forming a barcode or a bit pattern representing each coordinate value at a corresponding position. As the specific coordinate value recognition display,
The vertical and horizontal lines orthogonal to each other, or the square scale formed by arranging intermittently formed vertical and intermittently formed horizontal lines, the vertical and horizontal lines are coordinate values of the respective vertical lines. 4. The digitizer according to claim 3, wherein the digitizer is drawn with a bar code or a bit pattern representing the coordinate value of each horizontal line. 6. The digitizer according to claim 1, wherein said coordinate value recognition display is formed of a material responsive to infrared rays or ultraviolet rays. The digitizer according to claim 6, wherein the cursor is provided with an infrared irradiation device or an ultraviolet irradiation device. 8. The digitizer according to claim 1, wherein said cursor is provided with a visible light irradiation device. A sheet used when using a digitizer that converts an arbitrary position on the plane of the device to be measured into coordinate values at coordinates set on the plane,
A coordinate value recognition display for recognizing coordinates in order to match an arbitrary position of the object to be measured with a predetermined coordinate value is formed at coordinate positions at predetermined intervals corresponding to predetermined coordinate values. Sheet for coordinate recognition. The coordinate value in the coordinate recognition sheet is set in advance, and the coordinate value is assigned to each coordinate value recognition display, and each coordinate value recognition display is displayed so that each coordinate value can be specified. The coordinate recognition sheet according to claim 9, wherein a coordinate value recognition display is formed. The coordinate recognition sheet according to claim 10, wherein the specific coordinate value recognition display is formed by forming a bar code or a bit pattern representing each coordinate value at a corresponding position. As the specific coordinate value recognition display,
The vertical and horizontal lines orthogonal to each other, or the square scale formed by arranging intermittently formed vertical and intermittently formed horizontal lines, the vertical and horizontal lines are coordinate values of the respective vertical lines. The coordinate recognition sheet according to claim 10, wherein the sheet is drawn with a bar code or a bit pattern representing the coordinate value of each horizontal line. 13. The coordinate recognition sheet according to claim 9, wherein the coordinate value recognition display is formed of a material that responds to infrared rays or ultraviolet rays.

Images