Toy system and card

Abstract

To enable a movable body to stably travel on a card.SOLUTION: A toy system includes: a movable body (20) which is capable of self-propelling by rotating wheels; and a card (30) which allows the movable body to travel thereon, wherein the card includes a single sheet or a plurality of stacked sheets (35, 36, 37), and the back surface of the card has a greater coefficient of friction than that of the front surface of the card.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a toy system and cards. [Background technology]

[0002] There is a toy system in which cards are arranged on a flat surface such as a desk, and a moving object travels on the cards.

[0003] Patent document 1 describes a moving object running over a row of command cards, recognizing the pattern printed on the command card, and obtaining commands from the pattern to control the movement of the moving object. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2020 / 036146 Summary of the Invention [Problem to be solved by the invention]

[0005] Depending on the environment in which the card is placed, the position of the card may shift when the moving object moves over the card. This phenomenon makes it difficult for the moving object to move stably.

[0006] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide a technology that enables a moving body to run stably. [Means for solving the problem]

[0007] In order to solve the above problem, the toy system of the present invention includes a moving body that can move on its own by rotating wheels, and a card on which the moving body can run, the card including one sheet or multiple overlapping sheets, and the coefficient of friction of the back surface of the card is greater than the coefficient of friction of the front surface of the card.

[0008] In one aspect of the present invention, the back surface of the card may be surface-treated to have a higher coefficient of friction than the front surface of the card.

[0009] In one form of the invention, the card may include a sheet, the front surface of which may be printed with a pattern that is readable by the moving body and that encodes information for controlling the movement of the moving body.

[0010] In one form of the invention, the card includes a base sheet and two sheets constituting the front and back surfaces of the card, respectively, and the material of the sheet constituting the front surface of the card may be the same as the material of the sheet constituting the back surface of the card.

[0011] In one aspect of the present invention, the sheet constituting the front surface of the card and the sheet constituting the back surface of the card may contain the same type of resin.

[0012] In one embodiment of the present invention, a visible image may be printed on the front surface of the substrate.

[0013] In one aspect of the present invention, a pattern readable by the moving body and encoding information for controlling the movement of the moving body may be printed on the front surface of the base material.

[0014] In addition, the card of the present invention is a card on which a self-propelled moving body can run, and includes one sheet or multiple overlapping sheets, and the coefficient of friction of the back surface of the card is greater than the coefficient of friction of the front surface of the card.

[0015] In one aspect of the present invention, the card may be printed with a pattern that is read by the mobile object and that encodes information for controlling the movement of the mobile object. Effect of the Invention

[0016] According to the present invention, the moving body can run stably on the card. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a diagram showing an example of a toy system according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram illustrating an example of a hardware configuration of a toy system. [Diagram 3] FIG. 2 is a diagram showing an example of a moving object as viewed from below. [Figure 4] FIG. 2 is a schematic cross-sectional view of a card. [Diagram 5] FIG. 13 is a diagram illustrating an example of a moving object running on a card. [Figure 6] FIG. 13 is a diagram illustrating an example of an image printed on a card. [Figure 7] FIG. 13 is a diagram illustrating an example of control of a moving object by a card. [Figure 8] 13 is a flowchart illustrating an example of processing of a moving body. [Figure 9] 13 is a flowchart illustrating an example of processing of a moving body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Among the components appearing, those having the same functions are given the same reference numerals, and the description thereof will be omitted.

[0019] 1 is a diagram showing an example of a toy system according to an embodiment of the present invention. The toy system according to the present invention includes at least a moving body 20 and a plurality of cards 30. The moving body 20 has a cube-like outer shape, and its corners are chamfered. In addition, a plurality of protrusions are provided on the upper surface to enable attachment of other toys.

[0020] At least some of the multiple cards 30 are placed by the user at any location on a flat surface (e.g., on a desk or floor). When the moving object 20 travels over any of the cards 30, it reads the image and performs an operation according to the instruction shown in the image.

[0021] The cards 30 are classified into a number of card types, and are printed with an image in which information corresponding to the card type is encoded. The information controls the operation of the moving object 20, and is classified into operation instructions and setting instructions. The cards 30 on which images in which operation instructions are encoded are called operation instruction cards.

[0022] The multiple cards 30 include multiple action instruction cards, each of which is printed with an image indicating an action instruction for the moving object 20. Each of the multiple action instruction cards is printed with an encoded image indicating one of the multiple action instructions for the moving object 20. The types of action instructions correspond one-to-one to the card types, and decoding the card type corresponds to decoding the action instruction.

[0023] The operation instructions are classified into a plurality of types (groups). The plurality of types include a state change system, an action system, and a forced system. The state change system is a group consisting of instructions that change the operation (e.g., the running state) of the moving body 20. The operation instructions belonging to the state change system are further classified into a plurality of subgroups. The plurality of subgroups include a steering subgroup, a speed subgroup, and a brake subgroup. A running parameter exists for each of the subgroups. The steering subgroup includes an instruction to change the state of the steering wheel to the right or left, and an instruction to change the state of the steering wheel to go straight. The speed subgroup includes an instruction to set the running parameter of the speed to a specified value. The specified value may be any one of a plurality of predetermined candidate values ​​(e.g., slow, fast, very fast). The brake subgroup includes a brake instruction to continuously reduce the speed. The operation instructions may be labeled into a plurality of subgroups, such as a speed subgroup and a steering subgroup.

[0024] The action-based instructions are a group consisting mainly of instructions for making the moving body 20 execute a predetermined action. After an action-based instruction is executed, the previous action may be resumed. Note that even an action-based instruction may change the running state as a result of the action. The force-based instructions are a group consisting of instructions for immediately stopping the moving body 20.

[0025] 2 is a diagram showing an example of a hardware configuration of the toy system. A moving object 20 included in the toy system includes a processor 21, a storage 22, a communication unit 23, a camera 24, two motors 25, and a speaker .

[0026] The processor 21 operates according to a program stored in the storage 22, and controls the communication unit 23, the camera 24, the motor 25, the speaker 26, etc. The above program may be provided from another computer by communication via the communication unit 23. The above program may be stored in a computer-readable storage medium such as a flash memory or an optical disk and provided to the other computer. The number of processors 21 may be one or more.

[0027] The storage 22 is configured with a DRAM, a non-volatile memory, etc. The storage 22 stores the above-mentioned programs. The storage 22 also stores information input from the processor 21, the communication unit 23, etc., and calculation results.

[0028] The communication unit 23 is composed of a radio frequency circuit, an antenna, and the like for communicating with other devices. The communication unit 23 has a function of communicating with other devices (e.g., computers) according to, for example, the Bluetooth (registered trademark) protocol or a wireless LAN protocol. Under the control of the processor 21, the communication unit 23 inputs information received from other devices to the processor 21 or the storage 22, and transmits information to other devices. The communication unit 23 may communicate with other devices via a wired network.

[0029] Camera 24 is positioned to capture an image of the area below moving object 20, and repeatedly captures an image of the area below moving object 20. When moving object 20 travels over card 30, camera 24 captures an image of pattern 71 (see FIG. 4) printed on card 30. In this embodiment, pattern 71 that can be recognized in the infrared frequency domain is printed on card 30, and camera 24 captures an infrared image of the pattern 71. In addition to pattern 71, a picture that can be recognized in visible light is printed on card 30.

[0030] The motor 25 is a so-called servo motor, the direction, amount and speed of rotation of which are controlled by the processor 21 .

[0031] The speaker 26 outputs sound based on the control of the processor 21 and the like.

[0032] 3 is a bottom view of an example of the moving body 20. The moving body 20 further includes a switch 222, a power switch 223, and two wheels 254. One motor 25 is assigned to each of the two wheels 254, and the motor 25 drives the assigned wheel 254. The drive mechanism including the motor 25 and the wheels 254 constitute a traveling device that causes the moving body 20 to travel.

[0033] The structure of the card 30 will be described below. Fig. 4 is a schematic cross-sectional view of the card 30. The card 30 has a strength that makes it difficult to bend. The coefficient of friction of the back surface of the card 30 is greater than the coefficient of friction of the front surface of the card 30.

[0034] The card 30 includes a plurality of sheets that are stacked together. The plurality of sheets include a base material 35, a front sheet 36, and a rear sheet 37. The front sheet 36 constitutes the front surface of the card 30, and the rear sheet 37 constitutes the rear surface of the card 30. The plurality of sheets are stacked together in the order of the front sheet 36, the base material 35, and the rear sheet 37 from the top. A printed layer 39 is present between the base material 35 and the front sheet 36. On the front surface of the base material 35, an image that can be recognized by visible light and a pattern 71 that can be recognized by infrared light are printed as the printed layer 39. The thickness of the card 30 is, for example, 0.45 mm or less. The thickness of the card 30 may be any thickness that allows the moving body 20 to ride on it and is difficult to bend.

[0035] The substrate 35 may be made of resin or paper. More specifically, the material of the substrate 35 may be any one of paper, polypropylene (PP), polycarbonate (PC), polyethylene terephthalate (PET), and polyvinyl chloride (PVC). The material of the substrate 35 may be selected from the above materials in consideration of rigidity, durability, price, smoothness (resistance to warping), and heat resistance.

[0036] The front sheet 36 and the back sheet 37 are films attached to the base material 35. The front sheet 36 and the back sheet 37 may be formed by laminating a film onto the base material 35, or by coating. The material of the front sheet 36 may be the same as the material of the back sheet 37, and specifically, they may contain the same type of resin. Specifically, the material of the front sheet 36 and the back sheet 37 may be either PP or PET. By making the material of the front sheet 36 and the back sheet 37 the same, it is possible to prevent warping due to temperature changes, etc.

[0037] Here, the back surface of the card 30, i.e., the back sheet 37, is surface-treated to have a higher coefficient of friction than the front surface of the card 30. For example, the front surface of the card 30 may be matte-treated, and a material with a high coefficient of friction may be applied to the back surface. Also, the back surface may be matte-treated, and the front surface may not be treated. The matte treatment may be performed by attaching a film with a rough surface (e.g., a matte film) to the base material 35 as the front sheet 36 or the back sheet 37, or by applying any of materials such as resin, varnish, and silicon-based ink to the front sheet 36 or the back sheet 37. Velvet PP treatment may be performed instead of the matte treatment or application of the material.

[0038] These surface treatments make it possible to increase the coefficient of friction even if no adhesive for stickers is applied to the back surface of card 30. Instead of surface treatment using front sheet 36 or back sheet 37, the coefficient of friction of the back surface of card 30 may be made higher than that of the front surface by printing or applying a material to substrate 35. For example, a printing layer 39 may be printed and a protective layer (varnish) may be applied (or only printed) to the front surface of substrate 35, and a resin or silicone-based ink with a higher coefficient of friction may be applied to the front surface of substrate 35. In this case, card 30 may be composed of a single sheet of substrate 35.

[0039] FIG. 5 is a diagram for explaining an example of the moving object 20 running on the card 30. In FIG. 5, it is assumed that the card 30 is placed on a desk. When the moving object 20 runs on the card 30, a force in the opposite direction (rearward) to the moving direction of the moving object 20 is transmitted to the card 30 due to the frictional force between the rotating wheels 254 and the card 30. If the frictional force between the card 30 and the desk is insufficient, the card 30 will shift backward. By increasing the friction coefficient of the back surface of the card 30, the limit of the static frictional force between the card 30 and the desk is increased, making it possible to suppress the shifting of the card 30. In addition, by decreasing the friction coefficient of the front surface of the card 30, it is possible to reduce the possibility that an excessive force is transmitted to the card 30 and the card 30 shifts its position when the moving object 20 makes a sudden movement.

[0040] Next, the planar configuration of the printing layer 39 will be described. FIG. 6 is a diagram illustrating an example of an image printed on the card 30. The front surface of the card 30 includes an internal area 31 surrounded by a dashed line in FIG. 6, and a peripheral area 32 that is outside the dashed line and surrounds the internal area 31. A plurality of patterns 71 are printed in a matrix on the front side of the card 30 (strictly speaking, the front side of the base material 35). Each of the patterns 71 is an image of a predetermined size, for example, 0.2 mm square. The patterns 71 are images in which information for controlling the operation of the moving object 20 is encoded. This information is also the card type.

[0041] The size of each of the patterns 71 is smaller than the size of the moving object 20. In Fig. 4, the patterns 71 are depicted on a portion of the card 30, but in reality, they are arranged so as to fill the entire surface of the card 30. For ease of explanation, the image "Sound" that can be recognized with visible light is depicted by a dashed line.

[0042] In the internal area 31, among the patterns 71, a plurality of identification patterns 72 indicating the card type to which the card 30 belongs are arranged. The identification pattern 72 is an image in which the information of the card type is encoded, and the image of the identification pattern 72 differs depending on the card type. The plurality of identification patterns 72 are arranged in a matrix in the internal area 31. For the same card 30, the plurality of identification patterns 72 may be the same image. Note that the internal area 31 does not have to be rectangular, and the pattern 71 protruding from the internal area 31 becomes a peripheral pattern 73 described below rather than an identification pattern 72. In addition, in order that the moving object 20 traveling in the internal area 31 can always recognize the identification pattern 72, for example, 3×3 or more identification patterns 72 are arranged in the internal area 31. The identification patterns 72 do not necessarily have to be arranged in a matrix, and may be arranged in concentric circles, for example.

[0043] The peripheral area 32 is disposed on the periphery of the front surface of the card 30. In the peripheral area 32, a plurality of peripheral patterns 73 are disposed so as to surround the internal area 31 in which the plurality of identification patterns 72 are disposed. From another perspective, the identification pattern 72 indicating any of the card types is not printed in the peripheral area 32. The peripheral pattern 73 is a pattern 71 indicating none of the plurality of card types, and is an image in which peripheral information different from the information indicating the card type is encoded. In this embodiment, the peripheral information is a fixed value regardless of the card type, but it does not necessarily have to be a fixed value. The plurality of peripheral patterns 73 need only be disposed so as to be read by the moving body 20 traveling from the internal area 31 toward the outside of the card 30, and do not necessarily have to be arranged in a matrix. The width of the peripheral area 32 may be, for example, twice or more the size of the pattern 71.

[0044] Although the dashed dotted line is not actually printed, it is clear that the boundary between the internal region 31 and the peripheral region 32 exists between the identification pattern 72 and the peripheral pattern 73, which are adjacent to each other, and the existence of the internal region 31 and the peripheral region 32 can be easily confirmed. The pattern 71 does not have to be printed in the peripheral region 32.

[0045] When the moving object 20 travels over the card 30, the camera 24 of the moving object 20 captures the pattern 71 (image) printed on the card 30, and the processor 21 decodes the pattern 71 to obtain information. For example, the moving object 20 obtains an action instruction as its information from an identification pattern 72 printed on the action instruction card. The moving object 20 obtains peripheral information from a peripheral pattern 73. Here, the moving object 20 detects the direction of the moving object 20 (for example, angle A from a reference direction) by detecting the inclination of the pattern 71 in the image captured by the camera 24. The decoding may be performed by another computer included in the toy system and communicatively connected to the moving object 20. Note that when the moving object 20 passes over the card 30, the pattern 71 printed in different positions as time progresses is read.

[0046] Next, the control of the moving body 20 using the card 30 will be described. FIG. 7 is a diagram for explaining an example of the control of the moving body 20 using the action instruction card. In the example of FIG. 7, a "Fast" card 30b and an arrow card 30h indicating the moving direction are arranged as the action instruction cards. In the example of FIG. 7, the moving body 20 first reads the pattern 71 on the card 30b, updates the parameters of the speed subgroup to a specified (faster) speed, and moves straight at that speed. Then, the moving body 20 reads the pattern 71 on the card 30h, and executes an action of turning (changing direction) so that the direction indicated by the pattern 71 and the moving direction of the moving body 20 form a specified angle (the moving body 20 faces the direction of the arrow). After the change of direction is completed, the moving body 20 moves straight in the moving direction.

[0047] As shown in the example of Fig. 7, the operation of the moving object 20 is controlled by the card 30. In the example of Fig. 7, for example, the running parameters are changed by the operation instruction of the card 30, and then the moving object 20 moves according to the operation instruction until it reaches the next card 30. This makes the reading of the card 30 and the resulting operation interactive, allowing the user to experience more intuitive and easier programming.

[0048] Next, the process for realizing the above operation will be described in more detail. Figures 8 and 9 are flowcharts showing an example of the process of the moving body 20. The process shown in Figures 8 and 9 is realized by the processor 21 of the moving body 20 executing a program stored in the storage 22. Furthermore, some of the process may be realized by the processor 21 of another computer included in the toy system that is communicatively connected to the moving body 20. The process shown in Figures 8 and 9 is repeatedly executed periodically (for example, every 0.1 seconds).

[0049] First, the processor 21 acquires an image read by the camera 24 of the moving object 20 (S101). The processor 21 determines whether it is possible to decode information from the acquired image (S102). This process is a process for determining whether the pattern 71 exists in the acquired image. If it is impossible to decode the information (N in S102), the processor 21 sets the same card flag to OFF, and ends the process shown in Figs. 8 and 9. On the other hand, if it is possible to decode the information (Y in S102), the processor 21 determines whether the decoded information is peripheral information (S104). Here, this determination may be made based on whether the decoded information is within a range of values ​​indicating the card type. If the decoded information is peripheral information (Y in S104), the processor 21 sets the same card flag to OFF, and ends the process shown in Figs. 8 and 9. On the other hand, if the decoded information is not peripheral information (N in S104), the processor 21 checks whether the same instruction as the previous time has been decoded (S105). If the same instruction as the previous time has not been decoded (N in S105), S106 is skipped and the process from S107 onwards is executed. If the same instruction as the previous time has been decoded (Y in S105), processor 21 determines whether the same card flag is set to ON (S106).

[0050] If the same card flag is set to ON (Y in S106), the processor 21 ends the processing shown in Figures 8 and 9. On the other hand, if the same card flag is set to OFF (N in S106), the processor 21 sets the same card flag to ON (S107). The processor 21 also obtains an instruction (here, an operation instruction) from the decoded card type, and obtains the angle A of the moving body 20 relative to the card 30 (S108). Then, as shown in S111 and onwards, the processor 21 executes processing to operate the moving body 20 in response to the instruction (processing to control the running device, speaker 26, etc.).

[0051] The processes from S102 to S104 and S106 to S108 detect whether or not card type information has been acquired from the same card 30 as the previous time, and if card type information has been acquired from the same card 30, new control based on the instructions indicated by the card type is not executed. Also, if card type information has been acquired from a new card 30 by these processes, new control based on the instructions indicated by that card type is executed. The process of S105 is a process that corresponds to the case where the identification patterns 72 of two different types of cards 30 are forcibly read by moving the mobile object 20 by hand.

[0052] For example, when two cards 30 are arranged so that they overlap each other and the moving body 20 moves across the boundary between them, the patterns 71 printed on the two cards 30 are read consecutively. However, after the internal area 31 of the first card 30 is read, the peripheral area 32 of one of the cards 30 is read, and then the internal area 31 of the second card is read. The same card flag that is turned ON (see S106) when the internal area 31 of the first card 30 is read is turned OFF when the peripheral area 32 is read (see S104, S103), and the moving body 20 is controlled by the operation instruction read from the internal area 31 of the second card 30. In this way, when the identification pattern 72 is photographed after the peripheral pattern 73 is photographed by the camera 24, the processor 21 controls the operation of the moving body 20 based on the photographed identification pattern 72. On the other hand, when the same identification pattern 72 as the previous time is photographed by the camera 24, the operation of the moving body 20 is not controlled by reading the identification pattern 72. In this manner, the peripheral area 32 allows detection of a read from a new card 30 .

[0053] Instead of using the same card flag, information decoded from the pattern 71 photographed by the camera 24 in the previous process may be stored, and if the information is not identical to the information decoded from the currently photographed pattern 71, a process may be executed to control the operation of the moving body 20 according to the decoded card type. In this case, if dummy information is stored instead of the decoded information when the information cannot be decoded from the image, it is also possible to cope with the case where the surrounding pattern 73 cannot be read for some reason.

[0054] Returning to the description of the processing in Figures 8 and 9, when the processing in S107 is executed, processor 21 determines whether the acquired operation instruction belongs to a group of state change systems (S111). If the acquired operation instruction belongs to a group of state change systems (Y in S111), processor 21 updates the driving parameters in accordance with the operation instruction (S112).

[0055] More specifically, the processor 21 updates the driving parameters of the subgroup to which the action instruction is classified to values ​​indicated by the action instruction. When the action instruction belongs to the speed subgroup, the processor 21 sets the speed parameters to a value according to the action instruction. When the action instruction belongs to the steering subgroup, the processor 21 updates the steering state parameters to a value indicated by the action instruction (e.g., right, left, or straight). When the action instruction belongs to the braking subgroup, the processor 21 updates the brake parameters to a braking state (or a no-brake state).

[0056] When an action instruction belongs to a plurality of subgroups, processor 21 updates the driving parameters of each of the plurality of subgroups to a value indicated by the action instruction. For example, when an action instruction belongs to a speed subgroup and a steering wheel subgroup, processor 21 sets the speed parameter to a value according to the action instruction, and updates the steering wheel state parameter to a value indicated by the action instruction. In this case, there may be a plurality of action instructions that correspond one-to-one to each combination of a candidate value of the speed parameter (e.g., slow, fast, very fast) and a candidate value of the steering wheel state parameter (e.g., right, left, straight). There may be a card 30 that corresponds one-to-one to each of the plurality of action instructions.

[0057] On the other hand, if the acquired operation instruction does not belong to the state change system (N in S111), the processor 21 determines (S113) whether the acquired operation instruction indicates an instruction to stop the moving body 20. If the operation instruction indicates an instruction to stop the moving body 20 (Y in S113), the processor 21 ends the travel process and stops the moving body 20 (S114).

[0058] On the other hand, if the action instruction does not indicate an instruction to stop moving object 20 (N in S113), processor 21 determines whether the acquired action instruction belongs to an action group (S115). If the action instruction does not belong to an action group (N in S115), the processing of Figures 8 and 9 ends. If the action instruction belongs to an action group (Y in S115), processor 21 controls the traveling device to perform an action according to the action instruction (S116).

[0059] Among action-based operation instructions, in particular, for an operation instruction such as card 30h for turning the traveling direction in a specified direction, processor 21 determines the direction of rotation and the amount of rotation of left and right motors 25 based on the angle read from card 30. This direction of rotation and amount of rotation are determined so that the orientation of moving body 20 after rotation will be a predetermined direction (e.g., the direction of the arrow on card 30h) with respect to card 30 from which the angle was read. Processor 21 then rotates left and right motors 25 in the determined direction of rotation and amount of rotation. When the rotation ends, running according to the running parameters is resumed.

[0060] For an action-based operation instruction that causes the moving object 20 to perform a typical operation such as rotation (spin), meandering, or voice output, the processor 21 first acquires time-series control information associated with the action-based operation instruction and recorded in the storage 22. The processor 21 controls at least one of the motor 25 and the speaker 26 based on the time-series control information, causing the moving object 20 to perform the typical operation. When the time-series control ends, the moving object 20 resumes traveling based on the traveling parameters.

[0061] Next, the traveling process will be briefly described. In the traveling process, the processor 21 executes a program stored in the storage 22 to control a traveling device (e.g., the motor 25) based on traveling parameters. Some of the processes may be realized by the processor 21 of another computer included in the toy system and communicatively connected to the moving body 20. In the traveling process, the following processes are periodically executed.

[0062] When the brake state is set among the travel parameters, the processor 21 continuously reduces the speed of the moving body 20 by subtracting a predetermined value from the speed value stored as the travel parameter. If the subtracted speed value is 0, the processor 21 stops the travel of the moving body 20 and transitions the state of the moving body 20 to a stopped state. Furthermore, the processor 21 determines the rotation speed of the left and right wheels 254 based on the speed value and the handle state parameter, and controls the rotation of the left and right motors 25 based on the determined rotation speed. The difference between the left and right rotation speeds allows the moving body to be continuously turned left and right. By using the travel parameters, the moving body can operate without problems even if the operation instructions read from the same card 30 are ignored, and can be accurately controlled even when multiple cards are used by utilizing the surrounding area 32. [Explanation of symbols]

[0063] 20 moving body, 21 processor, 22 storage, 23 communication unit, 24 camera, 25 motor, 26 speaker, 222 switch, 223 power switch, 254 wheels, 30, 30b, 30h card, 31 internal area, 32 peripheral area, 35 substrate, 36 front sheet, 37 back sheet, 39 printing layer, 71 pattern, 72 identification pattern, 73 peripheral pattern.

Claims

1. A mobile body capable of self-propelling by rotating wheels; a card on which the moving body can run; Including, The card may include a single sheet or multiple sheets stacked together; The coefficient of friction of the back surface of the card is greater than the coefficient of friction of the front surface of the card. Toy system.

2. 2. The toy system of claim 1, The back surface of the card is surface-treated to have a higher coefficient of friction than the front surface of the card. Toy system.

3. 3. The toy system according to claim 2, the card includes one sheet; A pattern readable by the moving body and encoding information for controlling the movement of the moving body is printed on the front surface of the sheet. Toy system.

4. 3. The toy system according to claim 1, The card includes a base sheet and two sheets constituting the front and back surfaces of the card, The material of the sheet constituting the front surface of the card is the same as the material of the sheet constituting the back surface of the card. Toy system.

5. 5. The toy system according to claim 4, the sheet constituting the front surface of the card and the sheet constituting the back surface of the card contain the same type of resin; Toy system.

6. 5. The toy system according to claim 4, A visible image is printed on the front surface of the substrate. Toy system.

7. 5. The toy system according to claim 4, A pattern readable by the movable body and encoding information for controlling the movement of the movable body is printed on the front surface of the base material. Toy system.

8. A card on which a self-propelled moving body can run, It may include one sheet or multiple sheets stacked together, The coefficient of friction of the back surface of the card is greater than the coefficient of friction of the front surface of the card. card.

9. 9. A card according to claim 8, A pattern to be read by the mobile object, the pattern being encoded with information for controlling the movement of the mobile object, is printed on the card. card.

Images