KR101783037B1 - Hybrid compass with information transmission function, hybrid compass system and method using the same - Google Patents

Hybrid compass with information transmission function, hybrid compass system and method using the same Download PDF

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Publication number
KR101783037B1
KR101783037B1 KR1020160014172A KR20160014172A KR101783037B1 KR 101783037 B1 KR101783037 B1 KR 101783037B1 KR 1020160014172 A KR1020160014172 A KR 1020160014172A KR 20160014172 A KR20160014172 A KR 20160014172A KR 101783037 B1 KR101783037 B1 KR 101783037B1
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KR
South Korea
Prior art keywords
information
leg
compass
hybrid
center
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KR1020160014172A
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Korean (ko)
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KR20170094566A (en
Inventor
김학상
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주식회사 드림오피스
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/02—Compasses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L7/00—Straightedges
    • B43L7/005—Straightedges combined with other drawing aids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
    • B43L9/00—Circular curve-drawing or like instruments
    • B43L9/16—Features common to compasses, dividers, and callipers
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B11/00—Teaching hand-writing, shorthand, drawing, or painting
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/24—Use of tools

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The present invention relates to a hybrid compass having an information transmission function, a hybrid compass system, and a method of transmitting institution information using a hybrid compass. The present invention is characterized in that the pressure sensor 50 formed as one layer in the body 11 has an area corresponding to the end of the pencil portion 40 inserted into the leg 22, A first step of waiting for recognition of a corresponding pressure signal; A second step of generating center position information of the perceived pressure when the pressure sensor (50) recognizes the pressure signal; And the pressure sensor 50 transmit the pressure center position information to the control and communication unit 60 having the unidirectional wireless antenna dedicated for transmission through the data bus or the wireless communication so as to transmit the call of the hybrid compass 1, Generating and providing measured length information for the circle; And a control unit.
Accordingly, the ruler is formed integrally with the compass so that the length of the arc or circle is precisely regulated, and then transmitted to a smart device such as a compass user's smartphone or a smart pad for institutional information, Can be directly confirmed.
In addition, the present invention has the effect of providing educational information to a learner or an educator through implementation of the smart device of the user in the institutional state, in addition to the precision of the system.
In addition, the present invention provides information on a precise system by providing accurate information about the angle of rotation for arcs or circles based on the fixed and fixed center axes.

Description

Technical Field [0001] The present invention relates to a hybrid compass having an information transmission function, a hybrid compass system, and a hybrid compass,

The present invention relates to a method of transmitting institution information using a hybrid compass having a function of transmitting information, a hybrid compass system, and a hybrid compass. More specifically, the present invention relates to a method of transmitting institution information using a hybrid compass in which a ruler is integrated with a compass A hybrid compass system, and a system for transmitting institution information using a hybrid compass.

It is usually the easiest thing for students or the general public to draw circles, using a compass. The drafting apparatus is a precision instrument used by experts, and some commonly used instruments. However, the compass, which is mainly used for general and student use, is composed of a compact and convenient structure.

However, in order to draw precise figures during drawing (drawing), it is necessary to pay attention to detail. However, when using both compasses and compasses simultaneously, errors occur frequently when only one character or compass is shaken. There has been an inconvenience.

[Related Technical Literature]

1. Dorim Karl Compass (Patent Application No. 10-1987-0014872)

2. A tapeline com-passes for education (Patent Application No. 10-2004-0069274)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a smart device such as a compass user smart phone, smart pad, A hybrid compass system, and a hybrid compass, which have an information transmission function for confirming an established state by transmitting and receiving a system information.

The present invention also relates to a hybrid compass, a hybrid compass system, and a hybrid compass system having an information transmission function for providing education information to a learner or an educator through implementation of a user's smart device in an organized state, And a method of transmitting institution information using a hybrid compass.

In addition, the present invention provides a hybrid system having an information transmission function for allowing a review of a precise system by providing information on the angle of rotation for precise arcs or circles on the basis of the fixed and fixed center axis, A compass, a hybrid compass system, and a hybrid compass.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a hybrid compass system according to an embodiment of the present invention includes a ruler 10, a center leg 21, a leg 22, a rotation part 23, a central axis 30, Wherein the center leg 21 comprises a stationary magnetic body 21a and the drafting leg 22 includes a removable pencil fixing end 22a and a fixed cap 22b and the center leg 21 And the leg 22 are fastened and fixed around the rotary shaft inside the rotary part 23 and the angle is adjusted around the rotation axis and the outer legs of the leg 21 are curved, The ruler 10 is brought into close contact with the outer surface of the forging leg 22 at the time of fastening the magnetic body 21a and the desorbing magnetic body 14 and the center leg 21 is bent at least in two or more joints, And a sharp center shaft 30 such as a drill is inserted and fixed at the end of the center leg 21, And a plurality of engraved angles are formed on the outer surface so that the fingers do not slip. The fixed pen 22b is formed of a flexible material such as PVC, And the ruler 10 has a body 11, a body curved portion 11a, a central axis fixing hole 12, and a detachable magnetic body (not shown) The main body 11 is made of an elastic material or is provided in a tape measure such as latex. The main body 11 has a flexible connecting portion 13, And a curved surface is printed on the surface so as to measure the length in the opposite direction of the connection. The body curved surface portion 11a constitutes the other end of the body 11 other than the one end connected to the connection portion 13, So that the hybrid compass 1 is formed, And the central axis fixing hole 12 is formed in the outer peripheral surface of the connection portion 13 of the magnetic body 11 so as to be in close contact with the fixed magnetic body 21a of the central leg 21, And the lower end of the center shaft 30 formed at the end of the center leg 21 is inserted and fixed and the apparatus leg 22 mounted with the pencil portion 40 is connected to the rotation portion The hybrid compass 1 including a hybrid compass 1 having an information transmission function having a structure for drawing a circle or a circle while rotating around a center axis 30 of the hybrid compass 1, A pressure sensor 50 is formed on the scale 10 connected to the hybrid compass main body 100 to form a single layer in the interior of the body 11 to sense the position information pressed by the scale 10, The compass main body 100 is provided with a control and communication section 6 One of the center leg 21, the fork leg 22 and the rotation part 23 for sensing one rotation degree information about one of the center leg 21 and the fork leg 22, And the control and communication unit 60 is connected to the pressure sensor 50 and the rotation angle measurement sensor 60a via a data bus or a wireless communication method and is connected to a single direction Receives a position information from a pressure sensor (50), receives rotational position information from a rotational position sensor (60a), and outputs information about a call or circle including position information and rotational position information And transmits information about the call or circle to the smart device 80 via the network 70 or directly to the smart device 80 via the short range wireless communication method to establish the smart device 80 in the hybrid compass number Or a three-dimensional image of a call or circle system using information on a circle is implemented.

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A method of transmitting a scheme information using a hybrid compass, a hybrid compass system, and a hybrid compass having an information transmission function according to an embodiment of the present invention is a method of precisely arranging a call or circle length by forming a ruler with a compass After that, it is transmitted to a smart device such as a compass user's smart phone or a smart pad for institution information, thereby providing an effect that the learner and the educator can directly check the system status.

In addition, a method of transmitting institution information using a hybrid compass, a hybrid compass system, and a hybrid compass having an information transmission function according to another embodiment of the present invention is not limited to the precision of the system, It is possible to provide education information to the learner or the educator through the implementation of the education.

In addition, a method of transmitting a scheme information using a hybrid compass, a hybrid compass system, and a hybrid compass having an information transmission function according to another embodiment of the present invention includes: By providing the information about the rotation angle in the system, it is possible to review the precise system.

1 is a view showing a hybrid compass system including hybrid compasses 1, 2 and 3 having an information transmission function according to an embodiment of the present invention.
FIG. 2 is a block diagram showing the main components of a hybrid compass having an information transmission function centered on the hybrid compass 1 of the hybrid compass system of FIG.
3 is a flowchart illustrating a method of transmitting institution information using a hybrid compass having an information transmission function according to an embodiment of the present invention.
4 to 6 are views showing hybrid compasses 1, 2 and 3 according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In the present specification, when any one element 'transmits' data or signals to another element, the element can transmit the data or signal directly to the other element, and through at least one other element Data or signal can be transmitted to another component.

1 is a view showing a hybrid compass system including hybrid compasses 1, 2 and 3 having an information transmission function according to an embodiment of the present invention. FIG. 2 is a block diagram showing the main components of a hybrid compass having an information transmission function centered on the hybrid compass 1 of the hybrid compass system of FIG.

1 and 2, the hybrid compass system includes hybrid compasses 1, 2 and 3, a network 70, and a smart device 80 having an information transmission function.

4 to 6, and the scale 10, 10a, 10b connected to the hybrid compass body 100 of each of the hybrid compasses 1, 2, 3 is provided with the pressure A sensor 50 is formed. The hybrid compass main body 100 includes a central leg 21, a leg 22, a rotation portion 23, a central axis 30, and a pencil portion 40 as mechanical components, A control and communication unit 60, and a rotation angle measurement sensor 60a as main components.

Here, the pressure sensor 50 formed on each ruler 10, 10a, 10b and the terminal 80 connected to the network 70 using the control and communication unit 60 formed on the hybrid compasses 1, Performs measurement information transmission. The pressure sensor 50, the control and communication unit 60 and the rotation angle measurement sensor 60a are respectively formed in the hybrid compasses 1, 2 and 3, and the measurement information is transmitted to the terminal 80 connected to the network 70 do.

The pressure sensor 50 recognizes the pressure from the end of the pencil portion 40 inserted into the drafting leg 22 and obtains the position information of the perceived pressure And transmits it to the control and communication unit 60.

The control and communication unit 60 and the rotation angle measurement sensor 60a may be formed on one of the rulers 10, 10a and 10b, the center leg 21, the leg 22 and the rotation unit 23 . Here, the control and communication unit 60 is connected to the pressure sensor 50 and the rotation angle measurement sensor 60a through a data bus or a wireless communication method, and has a unidirectional wireless antenna dedicated for transmission in the case of wireless communication. The control and communication unit 60 receives the position information from the pressure sensor 50 and receives the rotation degree information from the rotation angle measurement sensor 60a and then outputs the position information and rotation degree information Information can be generated and transmitted to the smart device 80 via the network 70 or directly transmitted to the smart device 80 through the short-range wireless communication method.

3 is a flowchart illustrating a method of transmitting institution information using a hybrid compass having an information transmission function according to an embodiment of the present invention. 3, the pressure sensor 50 formed as one layer in the interior of the body 11 has a predetermined area range corresponding to the end of the pencil portion 40 inserted into the forging leg 22 And waits for the corresponding pressure signal (S11).

After step S11, the pressure sensor 50 generates center position information of the perceived pressure when recognizing the pressure signal according to step S11 (S12).

After step S12, the pressure sensor 50 transmits the pressure center position information to the control and communication unit 60 including the unidirectional wireless antenna dedicated for transmission (S13) via data bus or wireless communication.

After step S13, the control and communication unit 60 generates measurement length information for the call or circle according to the pressure center position information (S14).

After the step S14, the control and communication unit 60 receives the rotation degree information provided from the rotation angle measurement sensor 60a for a predetermined time together with the measurement length information for the call or circle, ), Information on a call or circle including measurement length information and rotation degree information, and transmits the generated information to the smart device 80 via the network 70 or transmits the generated information to the smart device 80 using the short- (S15) so that a three-dimensional image of a call or circle system using the information about the call or circle set in the hybrid compass on the smart device 80 is implemented.

Figs. 4 to 6 are diagrams showing the hybrid compasses 1, 2, and 3 described above with reference to Figs. 1 to 3, respectively. 4, the hybrid compass 1 includes a ruler 10, a center leg 21, a foot 22, a rotation portion 23, a central axis 30, and a pencil portion 40 , The ruler (10) can be used to accurately measure the size of the circle and arc.

On the other hand, the center leg 21 has a stationary magnetic body 21a, and the forging leg 22 includes a removable pencil fixing end 22a and a fixed cap 22b.

Here, the center leg 21 and the forging leg 22 are fastened and fixed around the rotation axis inside the rotation part 23, and the angle is adjusted around the rotation axis. The central leg 21 has a curved outer surface so that the scale 10 can be brought into close contact with the outer surface of the forging leg 22 at the time of fastening the stationary magnetic body 21a and the releasable magnetic body 14 Lt; / RTI >

1, the center leg 21 is illustrated as one unit, but the center leg 21 can be deformed in a manner that each joint can be bent by at least two or more joints.

The end of the center leg 21 is inserted and fixed or integrally provided with a sharp central axis 30 like a pincer at the end thereof as is known in the art and is in contact with the center leg 21 on the forging leg 22, And includes a removable pencil fixing end 22a and a fixed cap 22b as described above so that the pencil portion 40 is attached to and detached from the outer surface which is not visible.

Here, the removable pencil fixing end 22a has a cylindrical shape and has a smaller diameter as it goes to the upper part. A plurality of indentations are formed on the outer surface so that the finger does not slip. The fixed pencil 22b is formed of a flexible material, The pencil portion 40 of the lower portion can be fixed in such a manner that the pencil portion 40 is rotated.

Although not shown for this purpose, the fixed cap 22b and the removable pencil fixing end 22a can be rotated and opened in the same manner as a bottle cap, so that the spiral mode is symmetrical to the outer surface of the fixed cap 22b and the inner surface of the pencil fixing end 22a It is preferable that the guide lines of the first and second electrodes are symmetrically formed.

On the other hand, the scale 10 has a body 11, a body curved portion 11a, a central axis fixing hole 12, and a desorbing magnetic body 14.

The body 11 may be formed of a steel material having elasticity, or may be provided in a tape measure of a material such as latex. The main body 11 is connected to one end of the flexible connection 13 and is provided with a scale printed on the surface so as to measure the length in the opposite direction of the connection.

The body curved surface portion 11a is formed at the other end of the body 11 other than the one end connected to the connecting portion 13 and is formed as a curved surface so that the magnetic field generated by the descent magnetic body 14 on the ruler 10 in the hybrid compass 1, The center leg 21 can be brought into close contact with the stationary magnetic body 21a.

Here, the desorbing magnetic body 14 is formed of a magnetic body having a magnetic force on the lower surface, not on the upper surface on which the scale is printed on the body curved surface portion 11a, so that the magnetic force is used as the stationary magnetic body 21a of the above- And provides a function to maintain the attached state.

The center shaft fixing hole 12 is formed adjacent to one end of the magnet body 11 connected to the connection portion 13 and the lower end of the center shaft 30 formed at the end of the center leg 21 is inserted and fixed So that the forging leg 22 mounted with the pencil portion 40 rotates about the central axis 30 of the rotary part 23 so as to draw a circle or a circle.

5, the hybrid compass 2 includes a ruler 10a different from that of FIG. 4. The ruler 10a includes a main body 11, a body curved portion 11a, a central axis fixing hole 12, and a fixing groove 15. Further, the center leg 21 has a fixing pin 21b.

Here, the hybrid compass 2 has the same components as those of the hybrid compass 1 described above except for the scale 10a.

5 is different from the center leg 21 of the hybrid compass 1 of FIG. 3 in that the center leg 21 of the hybrid compass 2 shown in FIG. The curvature is formed gently or linearly.

The reason why the curvature is formed differently is that the body 11 constituting the scale 10a is formed not of a flexible material.

More specifically, the fixing pin 21b of the center leg 21 is formed of a circular plate and a thin support supporting it, as shown in the figure. In the ruler 10a having the plate body 11, The fixing groove 15 formed in the curved surface portion 11a is inserted into the support so that the fixing groove 15 and the fixing pin 21b are engaged and the scale 10a is in close contact with the outer surface of the forging leg 22 And provides a fixable effect. Here, the fixing groove 15 is formed by cutting in one of the two sides of the body curved surface portion 11a.

6, in the hybrid compass 3 having the ruler 10b of FIG. 6, the ruler 10b is composed of a main body 11 and a central axis fixing hole 12, The rotation part 23 for fixing and rotating the support leg 21 and the leg 22 includes a through hole providing end 23a and a through hole 23b is formed in the through hole providing end 23a.

That is, the main body 11 of the ruler 10b may be formed of a steel material of flexible material, a tape measure of a material such as latex, or a plate of a plastic material such as PVC.

In this case, when the plate is formed, the connecting portion 13 of the self-body 11 is connected to the through-hole providing end 23a of the through-hole providing end 23a formed in the rotating portion 13 by using the flexible connecting portion 13 The ruler 10b is fastened to the through hole providing end 23a of the rotary part 23 so that the ruler 10b is fixed to abut the outer surface of the forging leg 22, The through hole providing end 23a of the through hole providing end 23a is formed as far as the surface where the rotating part 23 and the through hole providing end 23a are in contact with each other so that the insertion of the ruler 10b is facilitated Or in the opposite manner to the surface where the rotating portion 23 and the through-hole providing end 23a are in contact with each other, it is possible to induce close contact of the scale 10b with the center leg 21. The through-hole providing end 23a is formed on the side surface of the rotation part 23 where the center leg 21 is formed below.

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) .

The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers skilled in the art to which the present invention pertains.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1, 2, 3: Hybrid compass
10, 10a, 10b: Ruler
11: body body
11a: body curved portion
12: center shaft fixing hole
13: Connection
14: desorbed magnetic material
15: Fixing groove
21: Center bridge
21a: fixed magnetic body
21b: Fixing pin
22: Draft Bridge
22a: Detachable pencil fastener
22b: fixed cap
23:
23a: Pass hole providing stage
23b: ruler through hole
30: center axis
40: Pencil portion
50: Pressure sensor
60: control and communication section
60a: rotation angle measuring sensor
70: Network
80: Smart Devices

Claims (7)

The central leg 21 includes a fixed magnetic body 21a and a center magnetic pole 21a which are arranged on the center leg 21, the center leg 21, the leg 22, the rotation part 23, the central axis 30 and the pencil part 40, The centering leg 21 and the forging leg 22 are disposed at the center of the rotating shaft 23 in the rotating portion 23 And the angle of the center leg 21 is curved so that the ruler 10 is fixed to the legs 10 when the stationary magnetic body 21a and the removable magnetic body 14 are fastened. And the center leg 21 is formed by bending each joint by at least two or more articulated joints and a sharp central axis 30 is formed at the end of the center leg 21 And the separable pencil fixing end 22a is cylindrically shaped and has a smaller diameter as it goes to the upper part, A plurality of depressions are formed on the outer surface so as to prevent the lock from slipping and are formed of a flexible material such as PVC and fixed to the lower pencil portion 40 in such a manner that the pencil portion 40 is rotated after passing through the fixed cap 22b, The body 11 may be formed of a steel material having elasticity or may be formed of an elastic material such as a latex and a metal, And is provided with a tape measure of the same material. The body 11 is connected to one end of the flexible connection 13 and is printed on the surface to measure the length in the opposite direction of the connection, 11a are formed at the other end of the body 11 other than the one end connected to the connecting portion 13 and are curved so that the magnetic attracting body 14 on the ruler 10 in the hybrid compass 1 is connected to the center leg 21 can be brought into close contact with the stationary magnetic body 21a The center shaft fixing hole 12 is formed adjacent to one end of the main body 11 connected to the connecting portion 13 and the lower end of the center shaft 30 formed at the end of the center leg 21 is inserted and fixed The apparatus has a structure in which the forging leg 22 mounted with the pencil portion 40 is capable of drawing a call or a circle while rotating around the central axis 30 of the rotation portion 23 In a hybrid compass system including one hybrid compass 1,
A pressure sensor 50 constituting one layer in the interior of the body 11 for sensing the position information pressed by the scale 10 is connected to the scale 10 connected to the hybrid compass body 100 of the hybrid compass 1, The hybrid compass main body 100 is provided with a control and communication unit 60 and a center leg 21 for sensing one rotation degree information about one of the center leg 21 and the fork foot 22 ), A leg 22, and a rotation part 23,
The control and communication unit 60 is connected to the pressure sensor 50 and the rotation angle measurement sensor 60a via a data bus or a wireless communication system and has a unidirectional wireless antenna dedicated for transmission and receives position information from the pressure sensor 50 And receives information about the degree of rotation from the rotation angle measurement sensor 60a and then generates information about the call or circle including the position information and the degree of rotation information and transmits information about the call or circle to the smart device 80 Or directly transmitted to the smart device 80 via the short distance wireless communication method to transmit the information to the smart device 80 via the communication network 70 or to the smart device 80 using the information about the call or circle established in the hybrid compass So that a 3D image is realized.
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KR1020160014172A 2016-02-04 2016-02-04 Hybrid compass with information transmission function, hybrid compass system and method using the same KR101783037B1 (en)

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KR1020160014172A KR101783037B1 (en) 2016-02-04 2016-02-04 Hybrid compass with information transmission function, hybrid compass system and method using the same

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KR101783037B1 true KR101783037B1 (en) 2017-09-28

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202935030U (en) * 2012-12-06 2013-05-15 张静 Compasses for blackboard
JP7122561B2 (en) * 2018-12-13 2022-08-22 パナソニックＩｐマネジメント株式会社 In-vehicle accessory device, in-vehicle display system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202935030U (en) * 2012-12-06 2013-05-15 张静 Compasses for blackboard
JP7122561B2 (en) * 2018-12-13 2022-08-22 パナソニックＩｐマネジメント株式会社 In-vehicle accessory device, in-vehicle display system

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