CN1752995A - Surface-sensitive input device with index data and computer system using the surface-sensitive input device - Google Patents

Abstract

The invention relates to a computer system, which comprises a host device, a display and an optical reading device. The display is connected with the host device so that the host device outputs data on a screen of the display, the surface sensing type input device is further divided into a plurality of areas, each area is provided with a plurality of index points, each index point represents the code of the corresponding area, and the index points are printed by using readable materials of a specific optical reading device; the optical reading device is connected to the host device and is used for reading the index points on the surface sensing type input device so as to deliver the read index points to the host device for processing.

Description

Surface sensing input device with index data and computer system using the same

technical field

The invention relates to a surface-inductive input device with index data, especially a surface-inductive input device with isodirectional index data and a computer system using the surface-inductive input device.

Background technique

Generally, input devices can be classified into keyboards, touch screens, and handwriting pads. However, due to the limitations of the keyboard, for non-English input (for example: Chinese input), the touch screen and handwriting pad are easier for users to accept than the keyboard.

Touch screens are available in resistive type, capacitive type, ultrasonic wave type, optical sensing type, electromagnetic type and other similar types. The resistive touch screen has been combined with a liquid crystal display (LCD), and is widely used as an input device in electronic notebooks, personal digital assistants (PDAs), portable personal computers, and the like. When compared with other types of touch screens, its design is very advantageous in terms of thinness, compactness, lightness and low power consumption.

However, when using the above-mentioned resistive touch screen, the user often needs to apply pressure on the touch screen, which makes the touch screen easy to be damaged. In addition, due to factors such as material aging, the user often needs to apply a lot of pressure. Only once did the touch screen respond. Moreover, since the resistive touch screen has been combined with a liquid crystal display (LCD), when the resistive touch screen ages, it is very difficult to replace it. The tablet also has the problem of resistive touch screen. Therefore, the known resistive touch screen still has room for improvement.

Contents of the invention

The object of the present invention is to provide a surface-sensitive input device with index data and a computer system using the surface-sensitive input device, which can conveniently and easily read the index data on the surface-sensitive input device.

According to a feature of the present invention, a surface-sensing input device with index data is proposed. The surface-sensing input device is divided into a plurality of areas, each area has a plurality of index points, and each index point represents the corresponding area. Code, these index points can be read by an optical reading device, and retrieve the corresponding index data, wherein, these index points are printed on the surface induction type input device.

Among them, the index point can be printed by using a specific optical reading system to read the material.

Wherein the specific optical reading system can read the material with the optical property of absorbing a specific wavelength of non-visible light.

Each index point has a plurality of sub-points arranged isotropically, including a central sub-point.

Wherein each index point has a plurality of orientation sub-points to provide an orientation index, and the orientation sub-points are distributed at a first distance away from the central sub-point.

Among the plurality of orientation sub-points, there is an orientation identification sub-point, and the orientation identification sub-point and the central sub-point form the direction of the corresponding index point.

Wherein each index point has a plurality of first data sub-points to provide a first data index, and the first data sub-points are distributed at a second distance from the central sub-point, and the second distance is greater than the first distance .

Each index point has a plurality of second data sub-points to provide a second data index, and the second data sub-points are distributed at a third distance from the central sub-point, and the third distance is greater than the second distance .

Wherein the surface sensing input device is a display screen or a handwriting board.

According to another feature of the present invention, a surface-sensitive input device with index data is proposed. The surface-sensitive input device is divided into a plurality of areas, each area has a plurality of index points, and each index point represents the corresponding area The code of these index points can be read by a specific optical reading device, wherein each index point includes:

A central subpoint, located at the center of the index point;

A plurality of orientation sub-points, which are distributed at a first distance away from the central sub-point, wherein one of the plurality of orientation sub-points has an azimuth identification sub-point, and the orientation identification sub-point forms a corresponding index with the central sub-point the direction of the point;

A plurality of first data sub-points are distributed at a second distance away from the central sub-point, and the second distance is greater than the first distance.

Each of these index points also has:

A plurality of second data sub-points are distributed at a third distance away from the central sub-point, and the third distance is greater than the second distance.

Wherein the second distance is twice the first distance.

The index points are printed on readable materials using a specific optical reading system.

Wherein the specific optical reading system can read the material with the optical property of absorbing a specific wavelength of non-visible light.

Wherein the surface sensing input device is a display screen or a handwriting board.

According to another characteristic of the present invention, a kind of computer system is proposed, comprising:

a host device;

A surface-sensitive input device, the surface-sensitive input device is further divided into a plurality of areas, each area has a plurality of index points, each index point represents the code of the corresponding area, and the index points use a specific optical reading device human-readable texture print; and

An optical reading device is connected to the host device and is used for fetching the index points on the surface-inductive input device, so as to hand over the read index points to the host device for processing.

Wherein the optical extraction device includes:

A light source: it has a light source with a specific wavelength for illuminating the surface-sensing input device;

a filter for passing light of a specific wavelength to obtain light corresponding to an index point of the surface-sensing input device;

a sensor, coupled to the filter, to sense the light passing through the filter; and form a pattern;

a decoding device, coupled to the sensor, to decode the corresponding index data according to the pattern output by the sensor; and

A first interface, one end of which is connected to the decoding device, and the other end is connected to the host device;

Wherein, the decoding device transmits the decoded index data to the personal computer through the first interface, so as to obtain the coordinates of the surface-sensing input device.

Wherein the material readable by the specific optical reading device has the optical property of absorbing a specific wavelength of non-visible light.

Wherein the first interface is one of R232 interface, PS2 interface, USB interface, 1394 interface, infrared interface or wireless transmission interface.

Wherein the surface sensing input device is a display screen or a handwriting board.

Description of drawings

FIG. 1 is a schematic diagram of the use of the surface-sensing input device with index data according to the present invention.

FIG. 2 is a block diagram of the optical reading device of the present invention.

Fig. 3 is a schematic diagram of index points in the present invention.

Fig. 4 is a schematic diagram of X-Y coordinate index points of the present invention.

FIG. 5 is another schematic view of the use of the surface-sensing input device with index data according to the present invention.

Detailed ways

FIG. 1 is a schematic diagram of using the surface-sensing input device with index data of the present invention in a computer system, which includes a host device 100 , a surface-sensing input device 200 and an optical reading device 300 . In this embodiment, the surface-sensitive input device 200 is a display, which is connected to the host device 100 so that the host device 100 outputs data on the screen 400 of the display 200. The screen of the surface-sensitive input device 200 400 is also divided into a plurality of areas (810, 811), each area has a plurality of index points (610, 611), each index point (610, 611) represents the code of the corresponding area, and these index points use specific optical The reading device 300 can read the printed material. The optical reading device 300 is connected to the host device 100 and used for reading the index points on the screen 400 , so as to hand over the read index points ( 610 , 611 ) to the host device 100 for processing.

FIG. 2 is a block diagram of the aforementioned optical reading device 300 of the present invention, which includes a light source 310 , a filter 320 , a sensor 330 , a decoding device 340 and a first interface 350 . The light source 310 is a light source with a specific wavelength for illuminating the screen 400 . The filter 320 passes light of a specific wavelength to obtain light corresponding to the index points ( 610 , 611 ) of the screen 400 . The sensor 330 is coupled to the filter 320 to sense the light passing through the filter 320 and form a pattern. The decoding device 340 is coupled to the sensor 330 to decode the corresponding index data according to the pattern output by the sensor 330 . One end of the first interface 35 is connected to the decoding device 340 , and the other end is connected to the host device 100 . The decoding device 340 transmits the decoded index data to the host device 100 through the first interface 350 to obtain the coordinates of the screen 400 .

In this embodiment, the index points (610, 611) are printed using the material that can be read by the aforementioned specific optical reading device 300. Optical properties of visible light. When a specific light is irradiated, the readable material of the index point (610, 611) will absorb the specific light, so that the sensor 330 senses a dark point at the place with the index point (610, 611). The filter 320 allows light having a wavelength greater than or equal to the specific light to pass through, so as to obtain reflected light corresponding to a location without an index point (610, 611).

Fig. 3 further shows a schematic diagram of index points (610, 611) according to the present invention, wherein each index point (610, 611) is composed of a group of plural sub-points, as shown in the figure, the sub-points are equal Azimuth (isotropic) arrangement, the radius of each sub-dot is about 100μm. The sub-points include: a central sub-point 410, a plurality of orientation sub-points (421, 422), a plurality of first data sub-points (431-436) and a plurality of second data sub-points (4401-4412). In this embodiment, each index point 612 has six azimuth sub-points (421, 422) distributed at a first distance (a) from the central sub-point 410 to provide an azimuth index, wherein the first distance a It is about 400 μm. In addition, among the six orientation sub-points forming the orientation index, there is an orientation identification sub-point 422 , and the orientation identification sub-point 422 and the central sub-point 410 form a direction to the index point (610, 611). The orientation identification sub-point 422 can be a blank point or a hollow point, wherein, a blank point means that no point is printed at this position.

As shown in FIG. 3, each index point (610, 611) has six first data sub-points (431-436) distributed at a second distance (2a) from the center sub-point 410 to provide a first data sub-point As an indicator, the second distance (2a) is greater than the first distance (a). In this embodiment, the second distance (2a) is twice the first distance (a). The first data sub-dots (431-436) can be blank dots or solid dots, wherein the solid dots represent 1 in binary and the blank dots represent 0 in binary. The first data indicator can form the direction of the index point (610, 611) from the orientation identification sub-point 422 and the center sub-point 410, and is arranged in a clockwise direction, that is, the point 431 represents a most significant bit ( Most SignificantBit, MSB), therefore, the first data index in FIG. 3 represents 111110 _b . Alternatively, the first data indicator can form the direction of the index point (610, 611) from the orientation identification sub-point 422 and the central sub-point 410, and arrange it in a counterclockwise direction, that is, point 431 represents a minimum effective bit (Least Significant Bit, LSB), then the first data indicator in FIG. 3 represents 011111 _b .

Still referring to FIG. 3, each index point (610, 611) has twelve second data sub-points (4401-4412) distributed at a third distance (b) from the central sub-point 410, to provide a As a second data indicator, the third distance (b) is greater than the second distance (2a). The second data sub-dots (4401-4412) can be blank dots or solid dots, wherein the solid dots represent 1 in binary and the blank dots represent 0 in binary. The second data index can form the direction of the index point ( 610 , 611 ) from the orientation identification sub-point 422 and the central sub-point 410 , and is arranged in a clockwise direction. That is, point 4401 represents a most significant bit (Most Significant Bit, MSB), and the second data index in FIG. 3 represents 111111111101 _b .

Fig. 4 is another embodiment of the index point of the present invention, and its main difference with Fig. 3 is that the second data index has 16 second data sub-points, which together with the first data sub-points can form 22 (16+6) The ones digit represents the X-axis coordinate x12-x1 and the Y-axis coordinate y12-y1 respectively.

Referring again to FIG. 1, the surface-sensing input device 200 is divided into a plurality of areas (810, 811, ...) by the first area. The plurality of areas are of the same size and each area has a plurality of index points. Each area Each has its index point value, for example, the index point of area 810 is 610, and the index point of area 811 is 611. A corresponding table may be pre-stored in the host device 100, and the corresponding table stores a plurality of index point data and coordinate data corresponding to the index point data. When the host device 100 receives the index point data through the first interface 350 , the coordinates of the illuminated area of the optical reading device 300 can be obtained through the corresponding table. The first interface 350 connects the optical reading device 300 and the host device 100 to transmit the index point data, which can be R232 interface, PS2 interface, USB interface, 1394 interface, infrared interface or wireless transmission interface.

The directions of the aforementioned index points 610, 611 may be different due to the misalignment of the printing process or the skew of the optical reading device 300 held by the user. However, since the index points 610, 611 of the present invention have an orientation index, the The optical reading device 300 can correctly read the index points 610 , 611 from any direction. It is not necessary to find out the orientation of the X-Y axis in order to correctly interpret the read index data.

In the above-mentioned embodiment, a plurality of index points (610, 611) representing each area are coated on the screen 400 of a surface-sensing input device 200, but it is also possible to increase the number of points on the screen 400 of the surface-sensing input device. A layer of protective transparent material with index points (610, 611), the transparent material can be glass or transparent plastic. Then an optical reading device 300 is used to irradiate the screen 400 of the surface-sensing input device to obtain the coordinates of the irradiated place.

FIG. 5 is another embodiment of the present invention, which is a schematic diagram of using the present invention's surface-sensing input device with index data in a computer system, which includes a host device 100, a surface-sensing input device 200 and an optical reader. Take device 300. In this embodiment, the surface-sensitive input device 200 is a tablet 500, which is further divided into a plurality of areas (810, 811), each area has a plurality of index points (610, 611), and each index point (610, 611) represent the codes of the corresponding areas, and these index points are printed using specific optical reading device 300 readable materials. The optical reading device 300 is connected to the host device 100 and used for reading the index points on the handwriting tablet 500 , so as to hand over the read index points ( 610 , 611 ) to the host device 100 for processing.

When a user writes a character (for example: 3) on the tablet 500 with the optical reading device 300 , the optical reading device 300 reads in the index points of a plurality of areas that the handwritten character passes through. When writing characters by hand, the light source 310 has a light source with a specific wavelength for illuminating multiple areas of the handwriting board 500 passing through. The filter 320 passes light of a specific wavelength to obtain light corresponding to the index points ( 610 , 611 ) of the tablet 500 . The sensor 330 is coupled to the filter 320 to sense the light passing through the filter 320 and form a pattern.

The decoding device 340 is coupled to the sensor 330 to decode the corresponding index data according to the pattern output by the sensor 330 . One end of the first interface 350 is connected to the decoding device 340 , and the other end is connected to the host device 100 . The decoding device 340 performs handwritten font discrimination on the decoded index data. to get the text written by the user. Then the first interface 350 transmits to the host device 100 to obtain the coordinates of the tablet 500 .

The above-mentioned decoding device 340 can directly transmit the pattern output by the sensor 330 to the host device 100 through the first interface 350 for processing in the host device 100, such as decoding of index data and discrimination of handwritten characters.

In summary, the present invention sets a plurality of index points (610, 611) representing each area on a surface-sensitive input device 200, and then uses an optical reading device 300 to irradiate the surface-sensitive input device 200, and Get the coordinates of the irradiation. Also, since the present invention sets a plurality of index points (610, 611) representing each area on a surface-sensitive input device 200, or adds a layer with index points (610, 611) on the surface-sensitive input device 200 ) protective transparent material, which can avoid the known problem that when the touch screen is aging, the user needs to apply pressure to touch the screen many times before it responds. At the same time, it can also avoid the problem that it is not easy to update when the touch screen is aging.

The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the patent application, rather than limited to the above-mentioned embodiments.

Claims (20)

1. surface induction formula input media with indexing information, this surface induction formula input media is distinguished into plurality of regions, each zone has a plurality of index points, each index point is represented the coding of institute corresponding region, these index points can be read by an optical pickup device, and capture corresponding indexing information, wherein, these index points are printd on this surface induction formula input media.

2. the surface induction formula input media with indexing information as claimed in claim 1 is characterized in that, wherein index point uses the particular optical reading system to can read material to print.

3. the surface induction formula input media with indexing information as claimed in claim 1 is characterized in that wherein this particular optical reading system can read the optical characteristics that material has the non-visible light that can absorb a specific wavelength.

4. the surface induction formula input media with indexing information as claimed in claim 1 is characterized in that, wherein this each index point have a plurality of with etc. the sub-point arranged of orientation, in the middle of comprise center point in.

5. the surface induction formula input media with indexing information as claimed in claim 4, it is characterized in that, wherein this each index point has the sub-point in a plurality of orientation, and so that an azimuth index to be provided, these orientation son points are distributed in distance should put one first distance by middle center.

6. the surface induction formula input media with indexing information as claimed in claim 5 is characterized in that, wherein has the sub-point of an orientation identification in this a plurality of orientation son point, this orientation identification point with should in the direction of the corresponding index point of center point formation.

7. the surface induction formula input media with indexing information as claimed in claim 6, it is characterized in that, wherein each index point has the sub-point of a plurality of first data, so that one first data index to be provided, these first data points are distributed in distance and are somebody's turn to do middle center point second distance place, and this second distance is greater than this first distance.

8. the surface induction formula input media with indexing information as claimed in claim 7, it is characterized in that, wherein each index point has the sub-point of a plurality of second data, so that one second data index to be provided, these second data points are distributed in distance should put the 3rd distance by middle center, and the 3rd distance is greater than this second distance.

9. the surface induction formula input media with indexing information as claimed in claim 1 is characterized in that, wherein this surface induction formula input media is a display device screen or hand-written version.

10. surface induction formula input media with indexing information, this surface induction formula input media is distinguished into plurality of regions, each zone has a plurality of index points, each index point is represented the coding of institute corresponding region, these index points can be read by a particular optical reading device, wherein, this each index point comprises:

Center point in one is positioned at the center of this index point;

The sub-point in a plurality of orientation, its be distributed in distance should in center put one first distance, wherein, have the sub-point of an orientation identification in this a plurality of orientation son point, this orientation identification point with should in the direction of the corresponding index point of center point formation;

The sub-point of a plurality of first data, it is distributed in distance and is somebody's turn to do middle center point second distance place, and this second distance is greater than this first distance.

11. surface induction formula input media as claimed in claim 10 is characterized in that wherein each index point also has:

The sub-point of a plurality of second data, it is distributed in distance should put the 3rd distance by middle center, and the 3rd distance is greater than this second distance.

12. surface induction formula input media as claimed in claim 10 is characterized in that wherein this second distance is the twice of this first distance.

13. surface induction formula input media as claimed in claim 10 is characterized in that, wherein these index points use particular optical reading systems to can read material to print.

14. surface induction formula input media as claimed in claim 13 is characterized in that wherein this particular optical reading system can read the optical characteristics that material has the non-visible light that can absorb a specific wavelength.

15. surface induction formula input media as claimed in claim 10 is characterized in that, wherein this surface induction formula input media is a display device screen or hand-written version.

16. a computer system comprises:

One host apparatus;

One surface induction formula input media, this surface induction formula input media also is distinguished into plurality of regions, each zone has a plurality of index points, and each index point is represented the coding of institute corresponding region, and these index points use the particular optical reading device to can read material and print; And

One optical pickup device is connected in this host apparatus and gets index point on this surface induction formula input media with one with a word used in person's names, the index point that is read is transferred to this host apparatus processing.

17. computer system as claimed in claim 16 is characterized in that, wherein this optics a word used in person's names is got device and is comprised:

One light source: it has the light source of a specific wavelength, in order to shine this surface induction formula input media;

One wave filter allows the light of specific wavelength pass through, to obtain the light corresponding to the index point of this surface induction formula input media;

One inductor is coupled to this wave filter, with the light of induction by this wave filter; And form a pattern;

One decoding device is coupled to this inductor, and the pattern with according to this inductor output decodes corresponding indexing information; And

One first interface, the one end is linked to this decoding device, and its other end is linked to this host apparatus;

Wherein, this decoding device is sent to this PC with the indexing information that decodes by this first interface, to obtain the coordinate of surface induction formula input media.

18. computer system as claimed in claim 17 is characterized in that, wherein this particular optical reading device can read the optical characteristics that material has the non-visible light that can absorb a specific wavelength.

19. optical access system as claimed in claim 17 is characterized in that, wherein this first interface be R232 interface, PS2 interface, USB interface, 1394 interfaces, infrared ray interface or wireless transmission interface one of them.

20. computer system as claimed in claim 17 is characterized in that, wherein this surface induction formula input media is a display device screen or hand-written version.

Images