TWI678662B - Identification system and identification method thereof - Google Patents

Abstract

An identification system includes a touch display and an object to be identified. The touch display has a bearing surface and a plurality of sensors, and the sensors are divided into a plurality of sensing units. The object to be identified is disposed on the bearing surface. The object to be identified has at least two code points, and the distance between the at least two code points is greater than or equal to twice the unit size of the sensing units.

Description

Identification system and identification method

The invention relates to a recognition system and a recognition method thereof, and more particularly to a recognition system and a recognition method for a touch display.

The development of multi-touch sensing technology has made the use of input devices more widely. Common applications include identifying interfaces on multi-touch display stands and multi-touch tables to increase interaction.

However, the current touch display stations use cameras to capture images of objects, which is too expensive and the system is too complicated. Or, the touch display station uses patterns with different shapes or angles to generate recognition functions. However, only a limited number of objects can be recognized, and the shapes or angles of the patterns must be large enough to be identified, which affects the accuracy of identification. degree.

The invention relates to an identification system and an identification method for identifying an object placed on a touch display.

According to an aspect of the present invention, an identification system is provided, which includes a touch display and an object to be identified. The touch display has a bearing surface and a plurality of sensors, and the sensors are divided into a plurality of sensing units. The object to be identified is disposed on the bearing surface. The object to be identified has at least two code points, and the distance between the at least two code points is greater than or equal to twice the unit size of the sensing units.

According to an aspect of the present invention, a recognition method is provided for use in a recognition system. The recognition system includes a touch display and an object to be identified. The touch display has a plurality of sensors, and the object to be identified has at least two The code point identification method includes the following steps. Collect touch information of the at least two code points of the object to be identified on the touch display. The touch message is analyzed to find a code point combination that matches the position of the at least two code points. The sensors are divided into multiple sensing units. The size of the at least two code points corresponds to the unit size of the sensing units, and the distance between the at least two code points is greater than or equal to the unit size of the sensing units. double.

In order to have a better understanding of the above and other aspects of the present invention, the following specific examples are described in detail below in conjunction with the accompanying drawings:

The following is a detailed description of an embodiment. The embodiments are only used as examples and are not intended to limit the scope of the present invention. The following uses the same / similar symbols to indicate the same / similar components for explanation.

Referring to FIGS. 1A and 1B, the identification system 100 may include a touch display 110 and an object 120 to be identified. The touch display 110 has a bearing surface 113 and a plurality of sensors 111. The sensors 111 are divided into a plurality of sensing units 112. That is, each sensor 111 is regarded as a single sensing unit 112 or two sensors 111 are regarded as a single sensing unit 112, and it is determined based on the size of the code point 122 of the object 120 to be identified. The object 120 to be identified may be disposed on the bearing surface 113. The object 120 to be identified has at least two code points 122. The size of the code point 122 corresponds to the unit size of these sensing units 112. The distance D1 is greater than or equal to twice the unit size of the sensing units 112.

In addition, the identification system 100 may further include a decoding unit 130. The decoding unit 130 may analyze the positions of the at least two code points 122 to find a code point combination that matches the positions of the at least two code points 122.

Furthermore, the identification system 100 may further include a database 140 for storing a plurality of preset code point combinations related to an object identifier of the object 120 to be identified, and the decoding unit 130 may perform at least two code points 122 An analysis is performed to find one of the preset code point combinations that matches the position of at least two code points 122.

The touch display 110 is, for example, a platform having a multi-touch function, such as a table or a display stand. The bearing surface of the touch display 110 is a user operation interface for displaying information such as text, images, and application images. In addition, the touch display 110 can also provide related information such as voice, light, or music.

The object to be identified 120 is, for example, a beer glass, a wine glass, a coffee cup, etc., and the bottom surface of the cup has, for example, a code point 122 that can be identified. The plurality of code points 122 may be arranged on the bottom surface of the object 120 to be identified according to different types of objects to form a code point combination.

In addition, the code point combination is related to the object identifier correspondingly displayed on the touch display 110. The touch display 110 may display an object identifier or related information representing the characteristics of the object 120 to be identified on the screen to notify the user.

In addition, the object identifier may be a virtual control interface or an object image, such as a virtual knob or a digital stamp for visas, etc., for use by the user.

The touch display 110 can generate a sensing signal through mutual sensing between the code point 122 and the sensor 111 to obtain position information corresponding to the sensing signal. For example, the code point 122 is a metal sheet or other conductive material, and the sensor 111 may be a capacitive, inductive, or resistive sensing element. The size of the code point 122 is, for example, equivalent to or slightly larger than the size A1 of the single sensor 111.

When the code point 122 is placed above a sensor 111, the sensor 111 detects a change in the capacitance, inductance, or resistance between the code point 122 and the touch display 110 and sends a sensing signal to the touch display 110. , For the touch display 110 to learn the location information of the code point 122.

In one embodiment, by calculating the position information of each code point 122, the touch display 110 can recognize the type of the object represented by the code point combination to provide relevant information to the user and achieve human-computer interaction. In addition, the user can also communicate with the touch display 110 through the user interface to further deepen the interactive information.

Referring to FIG. 1A, in an embodiment, the object 120 to be identified has two code points 122, which are correspondingly located above the two sensors 111. The touch display 110 can sense each other through the two code points 122 and the corresponding two sensors 111 to identify the object 120 to be identified represented by the two code points 122. Similarly, when the object 120 to be identified has more than two code points 122, the touch display 110 can identify at least two or more objects 120 to be identified through different code point combinations. .

Referring to FIG. 1A, in an embodiment, when the unit size of the sensing unit 112 is the size A1 of the single sensor 111, the size of the code point 122 is equivalent to the size A1 of the single sensor 111. For example, when the size A1 of the single sensor 111 is 3mm × 3mm, the size of the code point 122 is also equivalent to 3mm × 3mm, but it is preferably not more than 1.5 times the size A1 of the single sensor 111. In addition, the distance D1 between the two code points 122 is greater than or equal to twice the unit size of the sensing unit 112 (that is, the size A1 of the single sensor 111), for example, 6 mm. In this way, even if the position of the code point 122 and the sensor 111 are not completely aligned, when judging the position of the second code point 122, the position of the second code point 122 will not be misjudged by the two connected sensing signals, thereby increasing the code point. The recognition rate of 122.

In addition, please refer to FIG. 1B. In another embodiment, when the unit size of the sensing unit 112 is the size A2 of the sensor 111 of at least a 2 × 2 array, the size of the code point 122 and the sensor 111 of the at least 2 × 2 array The size A2 is comparable. For example, when the size A2 of the sensor 111 of the 2X2 array is 6mmX6mm, the size of the code point 122 is also equivalent to 6mmX6mm, and the distance D1 between the two code points 122 is greater than or equal to the unit size of the sensing unit 112 (ie, the size of the 2X2 array The size A2) of the sensor 111 is twice, for example, 12 mm. In this way, the identification system 100 can reduce misjudgments and improve the identification rate.

Please refer to FIGS. 2A to 2C, which show the code point combination of the object to be identified 120 having a 3 × 3 array. The object to be identified 120 is placed on the touch display 110 of the sensor 111 having an 11 × 11 array. The size of each code point 122 is comparable to the size of a single sensor 111. In FIG. 2A, when the object 120 to be identified is located at a first azimuth (eg, 0 degrees), each code point 122 is correspondingly located on a sensor 111 to obtain position information of the first group of code points 122. In FIG. 2B, when the object 120 to be identified is rotated to a second azimuth (eg, 12 degrees), each code point 122 is correspondingly located on a plurality of sensors 111 to obtain position information of the second group of code points 122. In FIG. 2C, when the object 120 to be identified is rotated to a third-party position angle (for example, 24 degrees), each code point 122 is correspondingly located on a plurality of sensors 111 to obtain the position information of the third group of code points 122. By analogy, the object 120 to be identified is rotated 360 degrees to obtain at least 30 groups of code point combinations. Therefore, by comparing the plurality of sets of code point combinations, the recognition system 100 can find a code point combination that matches the position of the code point 122 of the object 120 to be identified.

After that, the decoding unit 130 may calculate the azimuth or the azimuth of the object 120 after the rotation according to the matched code point combination.

In Figures 2B and 2C, when the code point 122 overlaps with two or more sensors 111 after rotation, one of the sensors 111 with the larger overlap area can be selected as the code point position, and the one with the smaller overlap area Negligible.

In Figures 2A to 2C, the combination of code points of the 3X3 array is not limited to be arranged at the same pitch, but can also be arranged at different pitches, but the two adjacent code points 122 remain greater than or equal to the sensing unit 112. Unit size is twice. In this way, the identification system 100 can reduce misjudgments and improve the identification rate.

Please refer to FIGS. 1A and 3, where FIG. 3 is a schematic diagram of an identification method according to an embodiment of the present invention. The identification method includes the following steps. First, in step S31, touch information of at least two code points 122 of the object 120 to be recognized on the touch display 110 is collected. That is, position information of at least two code points 122 on the touch display 110 is collected. Next, in step S32, the touch message is analyzed to find a code point combination that matches the position of at least two code points 122. That is, the decoding unit 130 may analyze the position of the at least two code points 122 to find a code point that matches the position of the at least two code points 122 among a plurality of preset code point combinations stored in the database 140. combination.

Next, in step S33, according to a code point combination that matches the position of at least two code points 122, an object identifier related to the code point combination is found, and the object identifier is displayed on the touch display 110. The object identification is, for example, a virtual knob or an object image.

In addition, in Figures 2A to 2C, the code point combination of the 3X3 array is not limited to 9 code points 122, and it can also be less than 9 code points 122, such as 8, 7, 6, 5, 4, 4, 3, 2. When the object 120 to be identified is arranged and combined with less than 9 code points 122, the code points of the 3X3 array can generate more kinds of code point combinations, and the positions where the code points 122 are not set are called blank code points. The positions of the blank code points can be one, two or more. The following uses a fixed position blank code point and any number of random position blank code points as examples for illustration.

FIG. 4-1 to FIG. 4-49 are schematic diagrams of binary encoding information of the code point 122 according to an embodiment of the present invention. Please refer to Figure 4-1, taking the code point combination of the 3X3 array as an example, the number of code points 122 is at most 8. Among them, the first positioning code point 123 is fixed at the first coding area C1 in the lower left corner of the array 121 Two positioning code points 124 are fixed in the second coding region C2 in the middle of the array 121, and a blank code point 125 is fixed in the third coding region C3 in the upper right corner of the array 121.

The positions of the first coding region C1, the second coding region C2, and the third coding region C3 are fixed, for example, located on the diagonal of the 3X3 array 121, but the first positioning code point 123, the second positioning code point 124, and the blank code point 125 The position can be changed or defined by the user, which is not limited in the present invention.

In an embodiment, the decoding unit 130 may determine the code point combination of the 3X3 array 121 to be located in the first coding area C1, the first, and the third coding area C3 according to the positions of the first positioning code point 123, the second positioning code point 124, and the third coding area C3. Positions of the remaining code points outside the second coding region C2 and the third coding region C3. In other words, the code points of the remaining 6 coding regions are, for example, arranged in a sequence of binary coding, for example, 654321. As shown in Figure 4-1, 6 bits form a byte for coding. Each bit state may represent 0 or 1, and 0 represent coding regions no code point represents coding region code points, so a total of ²⁶ bytes states. That is, there are a total of 2 ⁶ code point combinations. If the code point position is repeated after the code point rotation is deducted, there are a total of 48 code point combinations, as shown in Figures 4-2 to 4-49.

Please refer to Figures 4-2 to 4-17. The coding information of each code point combination is represented as follows: 000000, 000001, 000010, 000011, 000100, 000101, 000110, 000111, 001000, 001001, 001010, 001011, 001100 , 001101, 001110, 001111.

Please refer to Figures 4-18 to 4-33. The coding information of each code point combination is represented as follows: 010000, 010001, 010010, 010011, 010100, 010101, 010110, 010111, 011000, 011001, 011010, 011011, 11100 , 011101, 011110, 011111.

Please refer to Figure 4-34 to Figure 4-49. The coding information of each code point combination is represented as follows: 10001, 100011, 100101, 100111, 101001, 101011, 101101, 101111, 110001, 110011, 110101, 110111, 111001 , 111011, 111101, 111111.

The above-mentioned 48 code point combinations can represent a total of 48 types of objects. Therefore, 48 types of object IDs or corresponding information can be displayed on the touch display 110, such as displaying object IDs representing each chess piece in a chess game.

Please refer to FIGS. 1A and 5, where FIG. 5 is a schematic diagram of an identification method according to another embodiment of the present invention. The identification method includes the following steps S51 to S53. First, in step S51, touch information of at least two code points 122 of the object 120 to be recognized on the touch display 110 is collected. That is, position information of at least two code points 122 on the touch display 110 is collected. Next, in step S52, the touch message is analyzed to find a code point combination that matches the position of at least two code points 122. That is, the decoding unit 130 can find the binary encoding information of the combination of the code points according to the positions of the first positioning code point 123, the second positioning code point 124, and the third encoding region C3.

Next, in step S53, an object identification related to the binary encoding information is found according to the binary encoding information, and the object identification is displayed on the touch display 110. The object identification is, for example, a virtual knob or an object image.

In addition, in another embodiment, the 48 code point combinations described above can also be matched with 30 code point combinations in Figures 2A to 2C to form 48 × 30 preset code point combinations. 48 × 30 preset code point combinations can be stored in the database 140 for direct comparison by the decoding unit 130. Or, on the other hand, please refer to FIG. 6A. After comparing the position of the code point 122 sensed by the sensor 111 with a plurality of preset code point combinations, a code point combination can be obtained. Then, refer to FIG. 6B As shown in the figure, after the azimuth of the code point 122 is normalized, according to the encoding method shown in FIG. 4-1, the binary encoding information obtained by the decoding unit 130 is 011000. Then, the decoding unit 130 finds an object identifier related to the binary encoding information 011000, and displays the object identifier on the touch display 110.

The identification system and the identification method disclosed in the above embodiments of the present invention are used to identify an object placed on a touch display. By comparing the code point information or binary code information on the object, the recognition system can find a code point combination that matches the position of the code point of the object to be identified. In one embodiment, the distance between two adjacent code points is greater than or equal to twice the unit size of the sensing unit. In this way, the identification system can reduce misjudgments and improve the identification rate.

In summary, although the present invention has been disclosed as above with the embodiments, it is not intended to limit the present invention. Those with ordinary knowledge in the technical field to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the scope of the attached patent application.

100‧‧‧ Identification System

110‧‧‧Touch display

111‧‧‧Sensor

112‧‧‧Induction unit

113‧‧‧bearing surface

120‧‧‧Objects to be identified

122‧‧‧yards

123‧‧‧The first positioning code point

124‧‧‧ second positioning code point

125‧‧‧ blank code points

130‧‧‧ decoding unit

140‧‧‧Database

A1‧‧‧ single sensor size

A2‧‧‧2X2 array sensor size

C1‧‧‧The first coding area

C2‧‧‧Second coding area

C3‧‧‧third coding area

D1‧‧‧distance

FIG. 1A is a schematic diagram of an identification system according to an embodiment of the present invention. FIG. 1B is a schematic diagram of an identification system according to another embodiment of the present invention. Figures 2A to 2C are schematic diagrams of placing a to-be-identified object having a 3X3 array of code point combinations on a touch display. FIG. 3 is a schematic diagram of an identification method according to an embodiment of the present invention. Figures 4-1 to 4-49 are schematic diagrams showing binary coding information of code points according to an embodiment of the present invention. FIG. 5 is a schematic diagram of an identification method according to another embodiment of the present invention. Figures 6A and 6B are schematic diagrams for determining the position of a code point in combination with the code point combination of the above two embodiments.

Claims (20)

An identification system includes: a touch display with a bearing surface and a plurality of sensors, the sensors are divided into a plurality of sensing units; and an object to be identified is disposed on the bearing surface and the to-be-identified The object has at least two code points, and the distance between the at least two code points is greater than or equal to twice the unit size of the sensing units. The identification system described in item 1 of the scope of patent application, wherein the unit size of the sensing units is the size of a single sensor. The identification system according to item 1 of the scope of patent application, wherein the unit size of the sensing units is the size of a sensor of at least a 2 × 2 array. The identification system according to item 1 of the scope of patent application, wherein the at least two code points are a combination of code points of a 3X3 array, and the number of the at least two code points is at most 8 in the code point combination of a 3X3 array. The identification system according to item 1 of the scope of patent application, further comprising a decoding unit that analyzes the position of the at least two code points to find a code point that matches the position of the at least two code points. combination. The identification system according to item 5 of the scope of patent application, wherein the at least two code points are a combination of code points of a 3X3 array, the at least two code points include a first positioning code point and a second positioning code point, and the first The positioning code point is located in a first coding region of the 3X3 array, and the second positioning code point is located in a second coding region of the 3X3 array, wherein the positions of the first coding region and the second coding region are fixed. According to the identification system described in item 6 of the patent application scope, wherein the 3X3 array further includes a third coding region, there is no code point in the third coding region, and the position of the third coding region is fixed. The identification system according to item 7 of the scope of patent application, wherein the decoding unit determines the position of the 3X3 array in the combination of code points according to the positions of the first positioning code point, the second positioning code point, and the third coding region. Positions of the remaining code points outside the first coding region, the second coding region, and the third coding region. The identification system according to item 8 of the scope of patent application, wherein the positions of the remaining code points are arranged in a sequence of binary codes. The identification system according to item 9 of the scope of patent application, wherein the decoding unit finds an object identifier related to the binary encoding information according to the binary encoding information, and displays the object identification on the touch display. According to the identification system described in item 5 of the scope of patent application, it further includes a database for storing a plurality of preset code point combinations related to an object identifier of the object to be identified, and the decoding unit is configured for the at least The positions of the two code points are analyzed to find one of the preset code point combinations that matches the position of the at least two code points, and display the object identifier on the touch display. An identification method is used in an identification system. The identification system includes a touch display and an object to be identified. The touch display has a plurality of sensors. The object to be identified has at least two code points. The identification method includes: Collect touch information of the at least two code points of the object to be identified on the touch display; and analyze the touch information to find a code point combination that matches the position of the at least two code points, The sensors are distinguished into a plurality of sensing units, the size of the at least two code points corresponds to the unit size of the sensing units, and the distance between the at least two code points is greater than or equal to that of the sensing units. Unit size is twice. The identification method according to item 12 of the scope of patent application, wherein the unit size of the sensing units is the size of a single sensor. The identification method as described in item 12 of the scope of patent application, wherein the unit size of the sensing units is the size of a 2X2 array sensor. The identification method according to item 12 of the scope of patent application, wherein the at least two code points are code point combinations of a 3X3 array, and the number of the at least two code points is at most 8 in the code point combinations of the 3X3 array. The identification method according to item 12 of the scope of patent application, wherein the at least two code points are a combination of code points of a 3X3 array, the at least two code points include a first positioning code point and a second positioning code point, and the first The positioning code point is located in a first coding region of the 3X3 array, and the second positioning code point is located in a second coding region of the 3X3 array, wherein the positions of the first coding region and the second coding region are fixed. According to the identification method described in item 16 of the patent application scope, wherein the 3X3 array further includes a third coding region, there are no code points in the third coding region, and the position of the third coding region is fixed. The identification method according to item 17 of the scope of patent application, wherein the step of finding a code point combination that matches the position of the at least two code points includes: according to the first positioning code point, the second positioning code point And the position of the third coding region determines the positions of the remaining code points in the code point combination of the 3X3 array that are located outside the first coding region, the second coding region, and the third coding region. The identification method described in item 18 of the scope of patent application, wherein the positions of the remaining code points are arranged in a sequence of binary codes, and the identification method further includes finding a binary code information related to the binary code information according to the binary code information. An object identifier is displayed on the touch display. The identification method according to item 12 of the scope of patent application, wherein the step of finding a combination of code points that matches the position of the at least two code points further includes: according to the data stored in a database with the object to be identified A plurality of preset code point combinations related to an object identifier, find one of the preset code point combinations that matches the position of the at least two code points, and display the object identifier on the touch On the monitor.