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WO2013031819A1 - Dispositif de projection d'images - Google Patents

Dispositif de projection d'images Download PDF

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Publication number
WO2013031819A1
WO2013031819A1 PCT/JP2012/071811 JP2012071811W WO2013031819A1 WO 2013031819 A1 WO2013031819 A1 WO 2013031819A1 JP 2012071811 W JP2012071811 W JP 2012071811W WO 2013031819 A1 WO2013031819 A1 WO 2013031819A1
Authority
WO
WIPO (PCT)
Prior art keywords
image
display
viewing angle
image projection
projection apparatus
Prior art date
Application number
PCT/JP2012/071811
Other languages
English (en)
Japanese (ja)
Inventor
康太 齊藤
Original Assignee
株式会社 スピン
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社 スピン filed Critical 株式会社 スピン
Publication of WO2013031819A1 publication Critical patent/WO2013031819A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/346—Image reproducers using prisms or semi-transparent mirrors
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/50—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels
    • G02B30/56—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images the image being built up from image elements distributed over a 3D volume, e.g. voxels by projecting aerial or floating images
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/001—Constructional or mechanical details
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N2213/00—Details of stereoscopic systems
    • H04N2213/006—Pseudo-stereoscopic systems, i.e. systems wherein a stereoscopic effect is obtained without sending different images to the viewer's eyes

Definitions

  • the present invention relates to an image projection apparatus for displaying a three-dimensional image using a virtual image of the two-dimensional image.
  • Patent Documents 1 and 2 A technique for displaying a three-dimensional image using a plurality of half mirrors has been studied (see, for example, Patent Documents 1 and 2).
  • a video device that displays a video with a stereoscopic effect from both sides of a half mirror by a synthesized video of a background and a video is disclosed.
  • This video device includes two video display devices that face each other, and a half mirror that is installed inclined between the two video display devices.
  • a single two-dimensional image plane is divided into a plurality of image areas to display individual images, and a plurality of half mirrors are arranged with a constant inclination. Then, the virtual image appears to overlap the observer's line-of-sight direction, thereby displaying a 3D image.
  • JP-A-8-122695 Japanese Unexamined Patent Publication No. 2006-135378 (first page, FIG. 1)
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide an image projection apparatus for outputting a three-dimensional image having a high visual effect using a simple structure.
  • the invention according to claim 1 is directed to a display contact portion formed of a viewing angle control material on a contact surface of a display that displays a front image and a rear image, and display of the front image.
  • the first plate made of a reflective material provided with a tilt angle with respect to the display contact portion, and the display contact portion corresponding to the display position of the rear image
  • the gist of the present invention is to provide a second plate made of a reflective material provided at the inclination angle.
  • the gist of the invention according to claim 2 is that, in the image projection device according to claim 1, the reflectance of the first plate is made lower than the reflectance of the second plate.
  • the gist of the invention described in claim 3 is that, in the image projection device according to claim 1 or 2, a translucent material that takes in light into the facing area of the display contact portion is provided.
  • the image projecting device according to the third aspect, wherein an opening for taking in external light and a reflecting material for guiding the external light taken in from the opening to the translucent material are provided.
  • the summary is provided.
  • an opening window for viewing the front image and the rear image is provided, and a viewing angle control is performed on the opening window.
  • the gist is that the material is provided.
  • a shape portion that gives a specific change in electrical characteristics to the display upon contact.
  • the gist of the invention described in claim 7 is that the image projection apparatus according to claim 6 further comprises an operation unit connected to the shape part via a wiring.
  • a three-dimensional image can be generated from the front image and the rear image via the first plate and the second plate. And since an internal structure can be shielded from the outside by the display contact part comprised from the viewing angle control material, a sense of reality can be improved.
  • the rear image reflected by the second plate can be viewed through the first plate.
  • light is taken in with a translucent material, can light up interior space, and can promote a three-dimensional effect.
  • the internal space can be efficiently lit up using external light.
  • the image reproduction can be controlled in accordance with the electric characteristic change.
  • an image projection apparatus for outputting a three-dimensional image having a high visual effect using a simple structure.
  • FIG. 1 It is a perspective view of the image projector of the 1st Embodiment of this invention, Comprising: (a) is a perspective view from an upper surface direction, (b) is a perspective view from a bottom surface direction. It is explanatory drawing of the image projector of this invention, (a) is a top view, (b) is a front view, (c) is a side view, (d) is a rear view, (e) is a bottom view. Sectional drawing of the image projector of this invention. Explanatory drawing at the time of use of the image projector of this invention. Explanatory drawing of the image projector of the 2nd Embodiment of this invention. Explanatory drawing of the image projector of the 3rd Embodiment of this invention. The perspective view of the image projector of other embodiment of this invention. Explanatory drawing of the image reproduction process in the image projector of other embodiment of this invention.
  • FIGS. 1A and 1B are perspective views from the top surface direction and the bottom surface direction of the image projection apparatus 10 of the present embodiment, respectively.
  • the image projection apparatus 10 includes a bottom surface portion 11a for installing the main body.
  • a front part 11b and left and right side parts 11c are connected to the bottom part 11a.
  • the left and right end portions of the front surface portion 11b are connected to the front side end portions of the left and right side surface portions 11c.
  • a back surface portion 11d is provided at the back side end portions of the left and right side surface portions 11c so as to face the front surface portion 11b.
  • An opening 13 is provided between the back surface portion 11d and the bottom surface portion 11a.
  • the upper side of the front part 11b and the front side end parts of the left and right side parts 11c are inclined at a predetermined angle (45 degrees in this embodiment) with respect to the bottom part 11a.
  • the half mirror 14 (a first plate made of a reflective material having transparency) is sandwiched. In the present embodiment, a half mirror 14 having substantially the same reflectance and transmittance is used.
  • an upper surface portion 11e is connected to each upper side of the half mirror 14, the left and right side surface portions 11c, and the back surface portion 11d.
  • the upper surface portion 11e is provided with an opening 16 as shown in FIG.
  • a viewing angle control film 17 is attached to the display contact portion of the upper surface portion 11 e so as to cover the opening portion 16.
  • the viewing angle control film 17 is a viewing angle control material that transmits only light in a viewing range of a predetermined angle from the front and suppresses transmission of light incident from an angle larger than the predetermined angle.
  • a film in which both sides of a sheet in which slats (louvers) are arranged in parallel can be integrated with a highly transparent film can be used.
  • a viewing angle control material that has a narrow viewing angle and mainly transmits only incident light from the front is used.
  • FIG. 2 shows a six-sided view of the image projector 10.
  • 2A is a top view
  • FIG. 2B is a front view
  • FIG. 2C is a side view
  • FIG. 2D is a rear view
  • FIG. 2E is a bottom view.
  • 3 and 4 show cross-sectional views of the image projector 10.
  • a reflective material 12a is provided on the bottom surface portion 11a.
  • a daylighting portion 12b that captures light into the facing area is provided opposite to the reflecting material 12a.
  • the daylighting portion 12b is made of a translucent material (for example, a frosted glass material that softly diffuses light). This daylighting part 12b is connected to the front part 11b and the left and right side parts 11c.
  • released is formed by the bottom face part 11a provided with the reflecting material 12a, the daylighting part 12b, the front part 11b, and the side parts 11c on either side.
  • a mirror 15 (a second plate made of a reflective material) is provided in parallel with the half mirror 14 inside the image projection apparatus 10.
  • the mirror 15 is composed of a total reflection mirror, and is connected to the daylighting portion 12b, the left and right side surface portions 11c, and the upper surface portion 11e.
  • the position of the front end of the half mirror 14 with respect to the front direction is arranged to coincide with the position of the front end of the opening 16 (one end of the display 21). Further, the position of the rear side end of the half mirror 14 is arranged so as to coincide with the center position of the opening 16. Furthermore, the position of the front side end of the mirror 15 is arranged so as to coincide with the center position of the opening 16 (the center of the display 21) with respect to the front direction. Further, the position of the rear side end of the mirror 15 is arranged so as to coincide with the position of the rear side end of the opening 16 (the other end of the display 21).
  • an image reproduction terminal 20 having a display 21 for outputting an image is used.
  • the display screen is divided into two upper and lower areas, and separate images (22, 23) are output to the respective areas.
  • a front image 22 front image
  • a rear image 23 back image
  • the display 21 of the image reproduction terminal 20 is brought into close contact with the viewing angle control film 17 of the image projector 10.
  • the image 22 is projected onto the mirror 15 to generate a virtual image 32.
  • the image 23 is projected on the mirror 15 to generate a virtual image 33.
  • the virtual image 33 is generated behind the virtual image 32 due to the positional relationship between the image (22, 23), the half mirror 14, and the mirror 15.
  • the image projection apparatus 10 is provided with the half mirror 14 on the front side and the mirror 15 on the back side.
  • the virtual image 33 of the image output to the display 21 of the image reproduction terminal 20 is generated behind the virtual image 32.
  • an image having a three-dimensional arrangement of three-dimensional arrangement can be generated based on the positional relationship. Therefore, a stereoscopic image can be easily provided using the external image playback terminal 20.
  • the image projection apparatus 10 provides the viewing angle control film 17 at a portion where the display 21 of the image reproduction terminal 20 is in close contact. Thereby, even when the inside is looked into from the upper surface oblique direction of the image projector 10, the internal structure cannot be seen. Therefore, it is possible to produce a closed space by shielding the internal structure and intermediate image from the user.
  • the space in which the virtual image (32, 33) is generated is surrounded by the side surface portion 11c.
  • the position of the surface of the half mirror 14 and the position of the front side end of the side surface portion 11 c coincide with each other, and the external scenery enters the field of view outside the half mirror 14. Thereby, there is a sense of perspective and openness with a virtual image, and the sense of reality can be further improved.
  • the image projection apparatus 10 includes the opening 13 and includes the daylighting unit 12b.
  • the space in the image projector 10 is lighted up lightly, and a three-dimensional effect can be promoted.
  • the efficiency of taking in external light can be improved by providing the reflecting material 12 a inside the image projection apparatus 10.
  • the image reproduction terminal 20 is installed horizontally on the image projection apparatus 10.
  • the image projection device 10a shown in FIG. 5 is used in a state where the image reproduction terminal 20 is standing. Specifically, the image projecting device 10 a is brought into close contact with the display 21 in a state where the image reproducing terminal 20 is inserted into the cradle 80.
  • the cradle 80 is a stand-type expansion device that can be connected simply by mounting the image projection device 10 and is used for data synchronization, file transmission / reception, charging, and the like of the image playback terminal 20.
  • a mirror 42, a half mirror 43, and a mirror 44 are connected in parallel at an angle of 45 degrees with respect to a viewing angle control film 41 to be brought into close contact with the display 21.
  • a viewing angle control film 45 is provided between the outer end of the half mirror 43 and the viewing angle control film 41.
  • the viewing angle control film 45 is provided in a substantially vertical direction with respect to the viewing angle control film 41.
  • the viewing angle control film 45 also transmits only light in a viewing range of a predetermined angle from the front, and suppresses transmission of light incident from an angle larger than the predetermined angle.
  • the image projection apparatus 10 a is provided with an open portion facing the display 21 of the image reproduction terminal 20.
  • the position of the lower end portion of the mirror 42 is arranged to coincide with the position of the lower end portion of the opening (the lower end portion of the display 21).
  • the upper end portion of the mirror 42 is disposed so as to coincide with the center position of the opening.
  • the position of the lower end part of the half mirror 43 is arrange
  • the position of the upper end of the half mirror 43 is arranged so as to coincide with the position of the upper end of the opening 16 (the upper end of the display 21).
  • the lower end of the mirror 44 is connected to the position of the upper end of the opening 16 (the upper end of the display 21).
  • an opening window 46 is formed on the opposite surface side of the viewing angle control film 41 corresponding to the position of the mirror 44.
  • the display 21 of the image reproduction terminal 20 is brought into close contact with the viewing angle control film 41 as shown in FIG. Also in this case, the display screen of the image reproduction terminal 20 is divided into two upper and lower areas, and separate images (22, 23) are output to the respective areas.
  • the image 22 is projected onto the half mirror 43 and the mirror 44 to generate a virtual image 32.
  • the image 23 is projected onto the mirror 42, passes through the half mirror 43, and is reflected by the mirror 44 to generate a virtual image 33.
  • the virtual image 32 is generated backward from the mirror 44 by the optical path length from the image 22 to the mirror 44.
  • the virtual image 33 is generated at a position behind the mirror 44 by the optical path length from the image 23 to the mirror 44.
  • the image projection device 10a is provided with the mirror 42 on the lower side and the half mirror 43 on the upper side.
  • the virtual image 33 is generated behind the virtual image 32.
  • the image projection device 10a is provided with the viewing angle control films (41, 45). Thereby, even when the user looks into the image projection apparatus 10a from an oblique direction, the internal structure cannot be seen. Therefore, it is possible to produce a closed space by shielding the internal structure and intermediate image from the user.
  • the image projection device 10a is brought into close contact with the display 21 in a state where the image reproduction terminal 20 is placed in the cradle 80. Thereby, it is possible to provide a stereoscopic image while performing storage, data synchronization, file transmission / reception, charging, and the like of the image reproduction terminal 20.
  • a mirror 52 and a half mirror 53 are connected in parallel at an angle of 45 degrees to a viewing angle control film 51 to be brought into close contact with the display 21, respectively.
  • a viewing angle control film 55 is provided between the outer end of the half mirror 53 and the viewing angle control film 51.
  • the viewing angle control film 55 is provided in a substantially vertical direction with respect to the viewing angle control film 51. This viewing angle control film 55 also transmits only light in a viewing range of a predetermined angle from the front, and suppresses transmission of light incident from an angle larger than the predetermined angle.
  • the image projection apparatus 10b is provided with an opening facing the display 21 of the image reproduction terminal 20.
  • the position of the lower end portion of the mirror 52 is arranged so as to coincide with the position of the lower end portion of the opening (the lower end portion of the display 21).
  • the position of the upper end portion of the mirror 52 is arranged so as to coincide with the center position of the opening.
  • the position of the lower end part of the half mirror 53 is arrange
  • the position of the upper end portion of the half mirror 53 is arranged so as to coincide with the position of the upper end portion of the opening 16 (the upper end portion of the display 21).
  • an opening window 56 is formed on the opposite surface side of the viewing angle control film 51 corresponding to the position of the half mirror 53.
  • the display 21 of the image reproduction terminal 20 is brought into close contact with the viewing angle control film 51 as shown in FIG. 6. Also in this case, the display 21 of the image reproduction terminal 20 outputs an image that is divided into two upper and lower regions and displays separate images (22, 23) in the respective regions.
  • This image 22 is transmitted through the half mirror 53.
  • the image 23 is projected on the mirror 52 and reflected by the half mirror 53 to generate a virtual image 33.
  • the virtual image 33 is generated at a position behind the half mirror 53 by the optical path length from the image 23 to the half mirror 53.
  • the image projection device 10b includes the mirror 52 on the lower side and the half mirror 53 on the upper side.
  • the virtual image 33 of the image output to the display 21 of the image reproduction terminal 20 is generated behind the image 22.
  • an image having a three-dimensional arrangement of stereoscopic effect can be generated based on the positional relationship.
  • a stereoscopic image can be provided more easily using the external image playback terminal 20.
  • the image projector 10a is provided with the viewing angle control films (51, 55). Thereby, even when the inside is looked into from the oblique direction of the image projector 10b, an internal structure cannot be seen. Therefore, it is possible to produce a closed space by shielding the internal structure and intermediate image from the user.
  • the half mirrors (14, 43, 53) that have substantially the same reflectance and transmittance are used.
  • the ratio is not limited as long as the material has transparency. Absent.
  • the image playback terminal 20 is used to output a three-dimensional image.
  • Various image output devices such as a smartphone, a tablet terminal, a liquid crystal display, and a plasma display can be used for the image reproduction terminal 20.
  • the viewing angle control film is used, but the viewing angle control method is not limited to the film material.
  • a viewing angle control filter that electrically controls the viewing angle can also be used.
  • a viewing angle control filter provided with a touch sensor is used.
  • the viewing angle control filter when the contact of the image reproduction terminal 20 is detected, the size of the display 21 is specified.
  • a photographing unit for photographing the viewing angle control filter surface may be provided in the image projecting device (10, 10a, 10b), and the size of the image reproduction terminal 20 may be specified by the photographed image. Then, the viewing angle control filter changes the area that protrudes from the display 21 to an opaque area according to this size.
  • the image reproduction terminal 20 is brought into close contact with the image projection devices (10, 10a, 10b). Instead of this, it is also possible to attach an image output device in advance to the image projection devices (10, 10a, 10b).
  • one or two virtual images are generated. Further, a larger number of virtual images may be generated.
  • the display screen of the display 21 of the image reproduction terminal 20 is divided into more areas.
  • a half mirror or a mirror is installed corresponding to each region. In this case, a half mirror is installed in an area that needs to be seen through the rear image.
  • the opening 13 is provided to take outside light into the image projector 10.
  • the image projection apparatus 10 may be provided with illumination means to emit light.
  • the opening part 13 was provided in the back side of the image projector 10, the opening position is not limited to a back surface. You may make it take in external light from the side or the front.
  • the reflecting member 12a is provided on the bottom surface portion 11a in the image projection apparatus 10.
  • the arrangement of the reflecting material 12a is not limited to the bottom surface portion 11a. It is also possible to arrange it so as to be inclined so that external light is irradiated to the daylighting unit 12b.
  • the viewing angle control film (45, 55) is provided between the outer end of the half mirror (43, 53) and the viewing angle control film (41, 51). Provided.
  • the image projection device (10a, 10b) can be closed, and the internal structure and the intermediate image are shielded from the user. can do.
  • the virtual images 33 and 32 are generated from the two images output to the display 21 of the image reproduction terminal 20.
  • the image reproduction on the display 21 of the image reproduction terminal 20 may be controlled using the image projection device 10.
  • a specific electric characteristic change (capacitance change) at the time of contact with the invisible region 170 on the viewing angle control film 17 is compared with the capacitance type display 21.
  • Conductive protrusions 61a and 61b are provided as the shape portions to be provided.
  • the invisible area 170 a band-shaped intermediate area that divides a plurality of screens reproduced on the display 21 is used.
  • This invisible region 170 is a region that does not affect the separate images 22 and 23 output to the display 21.
  • the invisible area 170 is not limited to the intermediate area that divides the screen, and an area that does not affect the images 22 and 23 can be used.
  • the number is not limited to two pieces.
  • a flexible conductive material such as conductive silicone or conductive foam can be used.
  • an operation unit is provided in an area that can be operated from the outside.
  • operation buttons 63a and 63b are provided as operation units on the front surface portion 11b, and the projections 61a and 61b are connected by wires 62a and 62b.
  • the location of the operation buttons 63a and 63b is not limited to the front part 11b, but can be provided on the side part 11c.
  • These wirings 62a and 62b are provided inside the front part 11b, the side part 11c, etc., and insulated from the touch panel display. Further, it is desirable that the wirings 62a and 62b have a plate shape such as a metal stay in order to prevent static electricity from being charged and do not have an overall coating so as to easily discharge to the atmosphere.
  • control unit (CPU) of the image reproduction terminal 20 is caused to function as an image reproduction unit by the image reproduction program stored in the image reproduction terminal 20.
  • the control unit of the image reproduction terminal 20 performs capacity detection (step S1).
  • the image reproduction terminal 20 detects a capacity change in the invisible region 170.
  • the image reproducing means detects the contact of the protrusions 61a and 61b with the surface of the display 21 and the contact of the finger on the operation buttons 63a and 63b by changing the capacitance.
  • the control unit of the image reproduction terminal 20 performs a determination process as to whether or not the projection part is in contact (step S2).
  • the image reproduction means determines whether or not the protrusions 61a and 61b are in contact with the surface of the display 21 based on the detected capacitance change.
  • step S3 when it is determined that the protrusion is not in contact (in the case of “NO” in step S2), the control unit of the image reproduction terminal 20 does not perform image reproduction (step S3). Note that when the image is being reproduced, the image displayed on the display 21 may be erased.
  • the control unit of the image reproduction terminal 20 reproduces the image recorded in the image reproduction terminal 20 (step S4).
  • the image reproduction means divides the display screen into two upper and lower areas and outputs separate images (22, 23) in the respective areas.
  • control unit of the image reproduction terminal 20 executes a determination process as to whether or not an operation has been performed (step S5).
  • the image reproduction means determines the presence or absence of a finger touch on the operation buttons 63a and 63b based on the detected capacitance change.
  • step S5 when it is determined that it is not operated (in the case of “NO” in step S5), the control unit of the image reproduction terminal 20 returns to the process of step S1. On the other hand, when it is determined that it has been operated (in the case of “YES” in step S5), the control unit of the image playback terminal 20 executes processing according to the operation (step S6), and returns to the processing of step S1.
  • the image reproduction means executes the processing from steps S1 to S4 and returns to the processing in step S1. Thereby, an image can be reproduced only when the image reproduction terminal 20 is installed in the image projection apparatus 10 and the contact with the protrusions 61a and 61b is detected.
  • the above configuration can also be applied to the second and third embodiments.
  • the protrusions 61a and 61b are provided in regions corresponding to the invisible region 170.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

Dispositif de projection d'images à l'intérieur duquel sont disposées, dans une surface de contact d'un affichage qui affiche une image avant et une image arrière : une section de contact d'affichage constituée d'un matériau de régulation d'angle de visualisation ; une première plaque constituée d'un matériau réfléchissant perméable, disposée suivant un angle d'inclinaison par rapport à la section de contact d'affichage et correspondant à la position d'affichage de l'image avant ; et une deuxième plaque constituée d'un matériau réfléchissant, disposée suivant ledit angle d'inclinaison par rapport à la section de contact d'affichage et correspondant à la position d'affichage de l'image arrière.
PCT/JP2012/071811 2011-08-30 2012-08-29 Dispositif de projection d'images WO2013031819A1 (fr)

Applications Claiming Priority (2)

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JP2011-187591 2011-08-30
JP2011187591 2011-08-30

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WO2013031819A1 true WO2013031819A1 (fr) 2013-03-07

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KR20150110253A (ko) * 2014-03-20 2015-10-02 트론시즈 테크놀로지 컴퍼니 리미티드 전자표시기기를 위한 표시 장치의 표시 방법 및 장치
JP2015184671A (ja) * 2014-03-20 2015-10-22 トロンクシズ テクノロジー カンパニー リミテッド 増幅表示装置および増幅表示システム
JP2016197158A (ja) * 2015-04-03 2016-11-24 アルパイン株式会社 表示装置
CN106170731A (zh) * 2014-03-31 2016-11-30 索尼公司 电子设备
JP2017049352A (ja) * 2015-08-31 2017-03-09 日本電信電話株式会社 空間像表示装置
JP2017156738A (ja) * 2015-08-28 2017-09-07 株式会社ライツ 立体映像表示装置及びそのシート部材
IT201600100661A1 (it) * 2016-10-07 2018-04-07 Mattia Morghen Dispositivo di gestione di un dispositivo di elaborazione mobile e sistema comprendente un dispositivo di gestione e un dispositivo di elaborazione mobile.

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