JP2009080181A - Projector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a projector capable of storing a presented content data, using a simple operation. <P>SOLUTION: The projector includes a control means which makes the content data projected on a projection position correspond to a storage medium. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a projector capable of processing content data projected as a projected image.

  In presentations at meetings and the like, there are many cases where materials are projected by using a projector. When such a presentation is performed, material data is created in advance using application software, and the created material data is stored in an external storage medium such as a USB memory (Universal Serial Bus memory) or a DVD ( Digital Versatile Disc) is often stored at the venue where presentations are made. At the venue, the data of the desired material is read from the brought-in external storage medium and projected as a projection image. For such a case, when an external storage medium is connected, a thumbnail of material data is first projected so that an operator can select the material to be projected (see, for example, Patent Document 1). .)

Further, when a projected image is projected onto a screen by a projector and the projected image is written on the screen, the written image is stored in a storage unit (see, for example, Patent Document 2).
JP 2005-215158 A JP 2005-195661 A

  As described above, the conventional projector uses storage means for storing materials prepared in advance by the presenter of the presentation, or storage means for storing changes made at the time of presentation. It was used. Such projectors are intended to facilitate preparation for presentations, correct deficiencies in materials on the spot, and store notes.

  However, in recent years, the number of presentations not only for viewers to simply watch the presentations made by the presenters but also for a plurality of people to gather and discuss each other has increased. In particular, in the case of a small meeting, there are cases where contents created by a plurality of persons are presented to each other and discussed based on the drafts. Such meetings are often held multiple times, and the content of the discussion is gradually revised and finalized. For this reason, it is necessary to exchange materials that have been created with each other and bring them home before the next meeting. In such a case, it is necessary to distribute the created materials to each other, but it is necessary to prepare materials in advance for the number of people participating in the meeting, or to pass each other with data However, to copy data to a storage medium, it is necessary to select a copy source data file or specify a storage location such as a copy destination drive letter or directory. It became a thing. Furthermore, in order to pass data to a plurality of persons, this work has to be performed for the number of persons, which has to be complicated.

  In addition, even if the presentation is simply a presentation only, distribution of the content used for the presentation may be desired. When a paper medium is used, it is necessary to prepare an assumed number of copies, which is complicated. If the number of copies exceeds the expected number of copies, paper media materials must be prepared. If the number of copies is lower, the prepared paper media must be taken back and discarded, which wastes resources. Will do. Further, even when data is handed over, the above-described work related to data copying becomes complicated or more than that of a small meeting.

  Although the above-described conventional projector can connect a large-capacity external storage device such as a USB memory, it simply recognizes the external storage device so that it can be read and written, and data for distributing materials. As described above, it was necessary to complicate the copying of.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a projector capable of storing content data with a simple operation. In particular, it is an object of the present invention to provide a projector that can easily store content data by connecting the content and the owner of the storage device.

  In order to achieve the above object, in the present invention, content data projected at a projection position is associated with a storage medium.

Specifically, the projector according to the present invention is:
A projector configured to project an image of at least one content by light emitted from a light source installed on an installation table;
Projecting in such a manner that the image of the at least one content moves around the projector body with the installation table as a projection surface, and after projecting in a manner of moving the image of the at least one content, at least one Projection means for projecting to two fixed projection positions;
Communication means capable of communicating with at least one storage medium in which the content data is stored;
Control means for associating data of content projected on the projection position with the storage medium based on the projection position.

  As described above, the projector according to the present invention is installed on the installation table, and projects an image of at least one content by the light emitted from the light source. Furthermore, the projector according to the present invention includes projection means, communication means, and control means.

  This projection means projects an image of at least one content described above. Further, the projection means uses the projector installation table as a projection plane. The projecting means projects an image of at least one content in two ways. In the first aspect, at least one content image is moved and projected so that the at least one content image circulates around the projector main body. In the second aspect, a projection image of at least one content is projected onto at least one fixed projection position. The projecting unit projects a projection image of at least one content in the first mode, and then projects in a second mode.

  Note that the second aspect described above means that the projected image of at least one content is projected so as not to move, and the projected image of the content is projected with different sizes or rotated. Such cases are also included in the second aspect. For example, the case where the projection image of at least one content is projected after being enlarged, reduced, or deformed is also included in the second mode. That is, in order to make it easy to visually recognize the projected image, the second image may be enlarged or reduced, or may be deformed and projected so as to correct the projected image distorted and projected to the original projected image. Included in embodiments. Furthermore, the case where the projection image of at least one content is projected so as to rotate by a predetermined angle is also included in the second mode. That is, the case where the image is slightly rotated and projected in order to make the projected image easy to see is also included in the second mode.

  Furthermore, not only the case where a single projection image is projected at one fixed projection position but also the case where a plurality of content projection images are projected at one fixed projection position is included. There may be at least one position for projecting the projection image. As described above, the number of content projection images and the number of projection positions are not limited.

  The communication means is connected so as to communicate with the storage medium. Content data is stored in this storage medium. The correspondence relationship between the storage medium and the communication unit does not have to be one-to-one, and it is only necessary that the communication unit can write content data to the storage medium by communicating with the storage medium. It is preferable that the content data can be read from the storage medium via the communication unit.

  Further, the control unit associates the data of the content projected at the projection position with the storage medium based on the projection position where the content is projected by the projection unit. That is, the control means associates the content data with the storage medium. The projection position may be determined based on the position where the storage medium is detected, or may be determined based on the position where the projection unit projects the projected image of the content.

  Since the content data projected on the projection position is associated with the storage medium, the storage operation can be facilitated when the content data is stored in the storage medium.

The projector according to the present invention is
It is preferable that the control unit stores content data projected on the projection position in the associated storage medium in accordance with an operation of the operator.

  In this way, the intention of the operator of the projector can be reflected and stored. In particular, when there is content that you do not want to be stored, the data can be prevented from being stored.

Furthermore, the projector according to the present invention is
It is preferable that the communication means can communicate with the storage medium in a contactless manner.

  By making contactless, handling and operation of the storage medium can be facilitated. Further, since there is no mechanical contact, durability of the projector and the storage medium can be improved.

Furthermore, the projector according to the present invention is
It is preferable that the communication unit and a placement unit for placing the storage medium are provided on an upper portion of the projector main body.

  Since the communication means and the mounting portion are provided in the upper part of the projector main body, the handling of the storage medium and the work for enabling the storage medium to communicate can be facilitated.

The projector according to the present invention is
There are a plurality of the storage media,
The communication means includes a plurality of antennas for communicating with the storage medium;
The control means is
Switching means for selecting any of the plurality of antennas;
It is preferable to include the storage medium that can communicate via a selected antenna and a transmission / reception unit that transmits / receives data of the content.

  The control means described above includes switching means and transmission / reception means. The switching means selects one of the plurality of antennas. Note that it is not necessary to select only one antenna, and the switching means may select two or more antennas as long as communication is possible. For example, two or more antennas may be selected and communicated by using a plurality of frequencies for communication. The transmission / reception means transmits / receives content data to / from a storage medium that can communicate via the antenna selected by the switching means. By doing so, even when there are a plurality of storage media, it is possible to accurately communicate by selecting a preferred storage medium.

Furthermore, the projector according to the present invention is
It is preferable that the control unit determines the projection position based on the selected antenna.

  In this way, since the projection position is determined, the projected image of the content can be projected quickly and accurately without complicated operations.

Furthermore, the projector according to the present invention is
The control means projects the image of the at least one content in a manner to move, then projects in a stationary manner,
A position when the image of the at least one content is projected in a stationary manner is set as the projection position,
It is preferable that the content data projected at the projection position is transmitted to the storage medium associated with the projection position.

  By doing in this way, operation which memorize | stores the data of content can be performed rapidly and exactly.

The projector according to the present invention is
It is preferable that the control unit selects the storage medium at a position close to the projection position by the switching unit and communicates with the selected storage medium.

  Since the storage medium close to the projection position is selected by the switching means, the storage medium can be easily selected and the operation can be simplified.

  The presented content data can be saved by a simple operation.

  Embodiments of the present invention will be described below with reference to the drawings.

<<< Outline of Projector 10 >>>
FIG. 1 is a perspective view schematically showing the projector 10 according to the first embodiment of the present invention. FIG. 1 shows a state where the projector 10 is placed at the approximate center of the desk 12 (installation table). As shown in FIG. 1, the projector 10 includes a main body 100, a support body 106, and a mirror 108. The light emitted from the upper part of the main body 100 is reflected by the mirror 108 and reaches the desk 12. A projected image is projected onto the desk 12 by the light reaching the desk 12.

<Main body 100 (Projector main body)>
The projector 10 has a main body 100. As shown in FIG. 1, the main body 100 has a substantially columnar shape or a substantially cylindrical shape. As shown in FIGS. 2 and 4, the main body 100 includes an illumination optical system 110, an imaging optical system 130, a detection device 140, and a control device 160 described later.

A substantially circular opening 102 is formed at a substantially central portion of the upper portion of the main body 100, and a projection lens 132 described later is fitted into the opening 102. As will be described later, light is emitted upward from the projection lens 132 toward the mirror 108.
The main body 100 corresponds to a “projector main body”.

<Support 106>
A peripheral portion 104 is formed on the upper portion of the main body 100 so as to go around the opening 102. Two supports 106 are provided on a part of the peripheral portion 104 so as to protrude obliquely upward. Each of the two supports 106 has a substantially bar shape. Note that the two supports 106 may be provided fixed to the main body 100 or detachable.

  In the example shown in FIG. 1, two rod-shaped supports 106 are provided in the peripheral portion 104, but the shape and number of the supports 106 and the positions where the supports 106 are provided are not limited thereto, What is necessary is just to make it the shadow of the support body 106 not to overlap the projection image mentioned later, or to overlap easily.

<Mirror 108>
The mirror 108 is supported by the two supports 106 described above. The mirror 108 has a substantially disk shape, and is arranged so that the reflecting surface of the mirror 108 faces the projection lens 132 (being downward in FIG. 1). By doing so, the light emitted from the projection lens 132 travels toward the mirror 108 and is reflected by the mirror 108.

  On the upper surface of the mirror 108, four antennas 182a to 182d described later are provided. The four antennas 182a to 182d are for communicating with four storage media 200a to 200d described later. These four antennas 182a to 182d and the four storage media 200a to 200d will be described later.

<Desk 12 (installation table)>
As described above, the projector 10 is placed on the desk 12. In FIG. 1, only the top plate portion of the desk 12 is shown as the desk 12, and the legs of the desk 12 are omitted. In the example shown in FIG. 1, the desk 12 has a substantially disk shape. The light emitted from the projection lens 132 is reflected by the mirror 108 and reaches the desk 12, whereby the projection image from the projector 10 is projected onto the peripheral area 14 of the desk 12. The peripheral area 14 is a partial area on the surface of the desk 12, and is an area of a part around the center of the desk 12. In other words, the peripheral area 14 is an area that goes around the center of the desk 12 on the surface of the desk 12. The size of the peripheral region 14 is appropriately determined depending on the size of the desk 12, the size of the projector 10, the size of the projection image, and the like. The surface of the desk 12 described above corresponds to the “projection plane”, and the peripheral area 14 corresponds to the “circular area”. As described above, the peripheral region 14 is a region where a projection image is projected on the desk 12.

  The projected image projected on the peripheral area 14 is preferably projected without being distorted or bent. For this reason, it is preferable to use the desk 12 formed in the flat shape without an unevenness | corrugation as the surface of the peripheral region 14 on which a projection image is projected. Further, since the projector 10 also needs to detect a detection object DT (see FIG. 2) such as a finger positioned on the surface of the desk 12, the surface of the peripheral region 14 is flat without unevenness from this point. It is preferable to use the desk 12 formed in a shape.

  In the desk 12 shown in FIG. 1, the part on which the projector 10 is placed (the center part of the desk 12) and the part on which the projection image is projected (the peripheral area 14 of the desk 12) are on the same plane. However, they need not be coplanar.

  The detected body DT described above includes both the operating body BD and the presentation body PN. A gesture can be detected by detecting the detection target DT as the operating body BD, and a person can be detected by detecting the detection target DT as the presentation target PN.

  The operating body BD is an operator such as a part of the body of an operator who operates the projector 10, a support bar or spoon held by the operator, or a support bar or spoon placed on the desk 12. Anything that can be moved based on the intentions and actions of the device is acceptable. Thus, by detecting the detection target DT as the operation body BD, the operator's gesture can be detected.

Moreover, the to-be-presented body PN includes at least one to-be-presented person who is positioned around the desk 12 and presents content, and an object corresponding to the to-be-presented person. The person to be presented includes a body and a part of the body of the person to be presented, and includes what is regarded as the person to be presented. The object corresponding to the person to be presented includes an object that can be viewed with the person to be presented, such as a coffee cup or a mobile phone owned by the person to be presented. In this way, by detecting the detection target DT as the display target PN, it is possible to detect a person who can be equated with the person to be presented or the person to be presented.
In the present embodiment, it is assumed that four people meet around projector 10 as shown in FIG. One of the four persons is a content presenter α who is a presenter of the presentation, and the remaining three are presentees β, γ, and δ in which the content is presented.

  Therefore, the operation body BD described above mainly includes a part of the body such as the finger of the presenter α, a support bar and a spoon held by the presenter α, and a support bar and a spoon placed on the desk 12. It can be moved based on the intention and action of the presenter α. When the person to be presented β, γ, and δ is also permitted to operate the projector 10, the operating body BD is not limited to the person to be presented by the person to be presented β, γ, and δ. Participants β, γ, δ, etc., the support rods and spoons held by the presenter β, γ, δ, and the support rods and spoons placed on the desk 12 And can be moved based on movement.

  Further, the presenter PN described above includes not only the presenter β, γ, δ but also the presenter α. As will be described later, since the content is also presented in front of the presenter α, the presenter PN includes the presenter α. Accordingly, the presenters β, γ, δ, and the presenter α that are located around the desk 12 and present content, and objects corresponding to the presenters β, γ, δ, and the presenter α are included. As described above, the presenter PN includes the body and a part of the presenter β, γ, δ, and the presenter α, and is also regarded as the presenter β, γ, δ, and the presenter α itself. Included. Further, the objects corresponding to the presenters β, γ, δ and the presenter α include the presentees β, γ, δ and the presenters β, γ, What can be equated with δ and the presenter α are included.

<<< Configuration of Projector 10 >>>
FIG. 2 is a cross-sectional view showing the configuration of the projector 10. In FIG. 2, the two supports 106 described above are omitted. As described above, the main body 100 is provided with the illumination optical system 110, the light modulation element 120, the imaging optical system 130 (132), the detection device 140, and the control device 160. The illumination optical system 110, the light modulation element 120, and the imaging optical system 130 are positioned on the upper side of the main body 100, and the detection device 140 and the control device 160 are positioned on the lower side of the main body 100. . By arranging in this manner, light can be emitted from the upper part of the main body 100, and heat generated from the illumination optical system 110 can be accurately radiated upward, and heat generated from the illumination optical system 110 is The influence on the detection device 140 and the control device 160 can be reduced.

<< Illumination optical system 110 (projection means) >>
The illumination optical system 110 includes a lamp 112, a reflecting mirror 114, a filter 116, and a lens 118. The lamp 112, the reflecting mirror 114, the filter 116, and the lens 118 are provided at predetermined positions inside the main body 100.

<Lamp 112 (light source)>
The lamp 112 is a lamp that emits light of a predetermined intensity at a predetermined wavelength, for example, a halogen lamp. The lamp 112 is disposed at a predetermined position inside the main body 100 so that the emitted light travels upward in the main body 100.

<Reflector 114>
A reflecting mirror 114 is provided around the lamp 112. The reflecting surface of the reflecting mirror 114 has a predetermined curved surface shape, for example, a parabolic shape or an elliptical shape. The reflecting mirror 114 is arranged so that the position of the focal point of the reflecting surface of the reflecting mirror 114 approximately matches the position of the filament of the lamp 112. The reflecting mirror 114 reflects and collects the light emitted from the lamp 112 by the reflecting surface, and guides the light toward the light modulation element 120 described later.

<Filter 116>
A filter 116 is disposed in the traveling direction of the light reflected by the reflecting mirror 114. The filter 116 blocks in advance light having a wavelength that may damage the light modulation element 120 or light having a wavelength that may affect the human body or the like from the light emitted from the lamp 112.

<Lens 118>
A lens 118 is arranged in the traveling direction of the light that has passed through the filter 116. The lens 118 guides the light that has passed through the filter 116 to parallel light and makes the light intensity uniform and guides it to the light modulation element 120 described later.
In FIG. 2, one convex lens is shown as the lens 118, but a plurality of lens groups can be formed even if lenses having other shapes are used as long as they can be converted into preferable light for entering the light modulation element 120. It may be used as the lens 118.

<Light modulation element 120>
In the traveling direction of the light passing through the lens 118, a light modulation element 120, for example, a liquid crystal element is disposed. The light modulation element 120 is controlled by a drive signal emitted from a control device 160 described later. The light modulation element 120 performs an operation of passing or blocking the light reaching the light modulation element 120 in accordance with the drive signal.

  The light that has passed through the light modulation element 120 by the operation of the light modulation element 120 reaches the surface of the desk 12, so that a desired projection image is formed on the surface of the desk 12.

  The light modulation element 120 is not limited to the liquid crystal element described above, but may be any element that can control the progress of light emitted from the lamp 112, such as a DMD (digital micromirror device).

  The lamp 112, the reflecting mirror 114, the filter 116, and the lens 118 described above are arranged so as to irradiate the light modulation element 120 with the light emitted from the lamp 112 as brightly as possible and with a uniform intensity. ing. In addition, if necessary, a color wheel for switching between red, green, and blue colors for irradiation, a color separation unit that separates colors into red, green, and blue colors and a light modulation element, and further modulating the light of each color You may provide the color synthetic | combination part to synthesize | combine.

  In the example shown in FIG. 2, the two light modulation elements 120 are shown. However, the number of light modulation elements 120 is not limited to this, and the size of the area on which the projection image is to be projected, the size of the desk 12, and the like. What is necessary is just to determine suitably according to various conditions, such as the resolution of the projection image which will be.

  For example, the peripheral region 14 of the desk 12 may be virtually divided into four different regions, and the projection image may be projected onto these four regions using four light modulation elements 120 corresponding to the regions. Specifically, when four light modulation elements 120 are used, the first light modulation element 120 corresponds to the first region, the second light modulation element 120 corresponds to the second region, The third light modulation element 120 is made to correspond to the third region, and the fourth light modulation element 120 is made to correspond to the fourth region. In this case, since one light modulation element 120 and one display memory 174 can be used for each of the four regions, the resolution of the projected image can be increased, and a detailed image can be obtained. Even in the case of projecting the content consisting of as a projected image, it can be displayed clearly. The display memory 174 described above will be described later.

<Other optical elements>
Further, an optical element such as a rod for irradiating the light modulation element 120 with the intensity of the light emitted from the lamp 112 being made more uniform may be further added to the illumination optical system 110.

<< Image forming optical system 130 (projection means) >>
<Projection lens 132>
A projection lens 132 is provided as the imaging optical system 130 in the traveling direction of the light that has passed through the light modulation element 120 described above. As described above, a substantially circular opening 102 is formed at a substantially central portion of the upper portion of the main body 100, and the projection lens 132 is fitted into the opening 102. The projection lens 132 converts the light that has passed through the light modulation element 120 so as to spread and form an image in a predetermined direction. The projection lens 132 can project the projected image on the surface of the desk 12 in a desired size.
In FIG. 2, one convex lens is shown as the projection lens 132, but a plurality of lens groups can be used even if lenses having other shapes are used as long as they can be converted into preferable light for projection onto the surface of the desk 12. May be used as the projection lens 132.

<Zoom function>
Further, the imaging optical system 130 may be provided with a movable lens group so as to have a zoom function. In this way, the projection image can be enlarged or reduced to a desired size according to the size of the desk 12.
The zoom function may be optically enlarged or reduced like the movable lens group, or may be performed by image processing in the control device 160 described later.

<Correction of projected image>
In addition, as shown in FIG. 2, since the light that has passed through the light modulation element 120 travels obliquely upward, the projected image projected on the desk 12 may be distorted. The distortion correction may be performed optically by providing an optical element for correction in the imaging optical system 130 or may be performed by image processing in the control device 160 described later.

<< Projection of projected image >>
The light that has passed through the light modulation element 120 passes through the projection lens 132 and travels upward of the main body 100. As described above, the mirror 108 is disposed above the main body 100, and the light traveling upward from the main body 100 is reflected by the mirror 108 and travels obliquely downward. The light traveling obliquely downward reaches the surface of the desk 12, and a projected image is formed by the reached light.

<< Detection device 140 (detection means) >>
As shown in FIGS. 3A and 3B, the detection device 140 includes four sets of infrared generators 141 and four sets of detected object detection devices 150.

<Infrared generator 141 (propagating wave generating means)>
Each of the four sets of infrared generators 141 includes an infrared generator 142, a movable mirror 144, and a lens 146. The four sets of infrared ray generators 141 are arranged at the lower part of the main body 100 as shown in FIG. FIG. 3A is a cross-sectional view of the main body 100 cut along a horizontal surface at a location where these infrared ray generators 141 are located. As shown in FIG. 3A, in the main body 100, one infrared generator 142, one movable mirror 144, and one lens 146 are provided as a set of infrared generators 141. In addition, since each of these four sets of infrared generators 141 has the same configuration and the same function, a set of infrared generators 141 will be described below.

  Infrared rays having a predetermined wavelength are emitted from the infrared ray generator 142. A movable mirror 144 is provided in the traveling direction of infrared rays emitted from the infrared ray generator 142. The movable mirror 144 is connected to an electric motor (not shown) so as to be interlocked. The electric motor rotates about a substantially vertical axis. By rotating the electric motor alternately in the positive direction or the reverse direction within a predetermined angle range at a predetermined cycle, the movable mirror 144 is also alternately switched in the forward direction or the reverse direction within the predetermined angle range. It rotates with a predetermined period around a substantially vertical axis (see arrow RA in FIG. 3A). When the movable mirror 144 rotates within a predetermined angle range, the infrared rays emitted from the infrared ray generator 142 are reflected by the movable mirror 144, and the traveling direction after the reflection is along the surface of the desk 12. And gradually change. By doing in this way, the infrared ray can be scanned along the surface of the desk 12 over a predetermined angle range θ (see FIG. 3A) by the set of infrared ray generators 141.

  A lens 146 is arranged in the traveling direction of the infrared light reflected by the movable mirror 144. When the infrared ray is scanned along the surface of the desk 12 over a predetermined angle range θ, the lens 146 is placed on the surface of the desk 12 over an angle range Θ of approximately 90 degrees (see FIG. 3A). It is for changing the traveling direction of infrared rays so that it can be scanned along. As shown in FIG. 3A, an opening 148 is formed in the side portion of the main body 100. The opening 148 is located in the traveling direction of infrared rays that have passed through the lens 146. The opening 148 has an elongated shape in the horizontal direction. The infrared light that has passed through the lens 146 is emitted toward the outside of the main body 100 through the opening 148. As described above, since infrared rays are reflected by the movable mirror 144, they are emitted outside the main body 100 so as to be scanned along the surface of the desk 12 over a range of approximately 90 degrees.

  As described above, the main body 100 is provided with four sets of infrared ray generators 141. Since a set of infrared generators 141 can scan along the surface of the desk 12 over an angle range Θ of approximately 90 degrees, by using four infrared generators 141, infrared rays can be transmitted over a range of 360 degrees. A scan can be made along the surface of the desk 12. By comprising in this way, infrared rays can be accurately irradiated with respect to the to-be-detected body DT which surrounds the main body 100 and is located.

  Infrared rays emitted outside the main body 100 travel in the vicinity of the desk 12 substantially parallel to the surface of the desk 12. For example, it travels along the surface of the desk 12 so that the distance from the surface of the desk 12 is 0.5 to 6 millimeters. As described later, the detection target DT can be detected by emitting infrared rays. As described above, the detected body DT includes both the operating body BD and the presented body PN. The operating body BD can be moved based on the operator's intentions and actions such as a part of the body of the operator who operates the projector 10 or a support bar or spoon held by the operator. It is. Moreover, the to-be-presented body PN is an object corresponding to a to-be-presented person and at least one to-be-presented person who is located around the desk 12 and presents content.

  The infrared light may be advanced so that the distance between the infrared light and the surface of the desk decreases as the infrared light advances. At this time, since the position where the infrared ray intersects with the desk coincides with the outer edge of the peripheral region 14, only the operation of the target DT in the peripheral region 14 can be detected. Even when it is located outside the peripheral region 14, it can be accurately controlled without being affected by unnecessary movement of the detection object DT.

<Detection object detection device 150 (reflected wave scattered wave detection means)>
As shown in FIG. 2, four sets of detected object detection devices 150 are arranged on the upper side of the infrared generation device 141 below the main body 100. FIG. 3B is a cross-sectional view of the main body 100 cut along a horizontal surface at a position where the detected object detection device 150 is located. As shown in FIG. 3B, one lens 152 and one image sensor 154 are provided as a set of detected object detection devices 150. Each of the four sets of detected object detection devices 150 is arranged so as to correspond to one of the four sets of infrared generation devices 141 described above. With this configuration, the infrared rays emitted from each of the infrared generation devices 141 are reflected by the detection target DT and then detected by the detection target detection device 150 corresponding to the infrared generation device 141. Can do. In addition, since each of these four sets of to-be-detected object detection apparatuses 150 is the same structure and has the same function, below, the set of to-be-detected object detection apparatuses 150 is demonstrated.

  As shown in FIG. 3B, an opening 156 is formed in the side portion of the main body 100. The opening 156 has a size and a shape corresponding to the size and shape of a lens 152 described later. A lens 152 is disposed near the opening 156 as shown in FIG. In the vicinity of the lens 152, an image sensor 154, for example, a CCD image sensor or a CMOS image sensor is arranged.

  Infrared rays (see arrow E shown in FIGS. 2 and 3A) emitted from the opening 148 described above are reflected or scattered by the detection object DT (see FIG. 2), for example, an operator's finger. The infrared light reflected or scattered by the detection object DT becomes a reflected wave or a scattered wave and travels toward the opening 156 (see arrow R shown in FIGS. 2 and 3B). The infrared rays that have passed through the opening 156 are incident on the lens 152 and travel in a predetermined direction. The infrared rays whose traveling direction is changed by the lens 152 are incident on the image sensor 154. When infrared rays are incident on the image sensor 154, an image of the detection object DT can be obtained.

  As described above, the main body 100 is provided with four sets of detected object detection devices 150. By using the four detected object detection devices 150, the detected object DT positioned surrounding the main body 100 can be detected in a range of 360 degrees. As described above, the object to be detected DT includes both the operation object BD and the object to be presented PN, and the four sets of object detection devices 150 detect the operation object BD and the object to be presented PN. As described above, the detected object detection device 150 can detect the infrared light that has been reflected or scattered by the detected object DT, and constitutes reflected wave scattered wave detection means.

  As described above, the infrared rays emitted from the infrared generator 141 to the outside of the main body 100 travel in the vicinity of the desk 12 substantially in parallel to the surface of the desk 12. In particular, by emitting infrared rays so as to travel at a distance of about 1 to 2 millimeters from the surface of the desk 12, even if the detected body DT is not in contact with the surface of the desk 12, the detected body DT is The object to be detected DT can be detected by bringing it closer to the surface. By doing in this way, it can be operated without paying attention to the operation, and the presentation can proceed smoothly.

  In the above-described example, the infrared generation device 141 is used as the propagation wave generation unit, and the detected object detection device 150 that detects the reflected infrared ray is used as the reflected wave scattered wave detection unit. An ultrasonic generator that can be provided and emits ultrasonic waves of a predetermined wavelength may be used as the propagation wave generation means, and an ultrasonic detection apparatus that detects the reflected ultrasonic waves may be used as the reflected wave scattered wave detection means.

  In this case, the distance to the detection object DT can be obtained from the difference between the time when the ultrasonic wave is emitted from the ultrasonic wave generation device and the time when the reflected ultrasonic wave is detected by the ultrasonic wave detection device. Further, the rotation angle of the detection object DT can be obtained from the rotation angle of the ultrasonic generator when the reflected ultrasonic wave is detected by the ultrasonic detector.

  In the above-described example, four sets of infrared generators 141 are used as the propagation wave generating means. However, one infrared generator 141 is used as the propagation wave generating means, and the infrared rays are output according to the position where the infrared rays are incident on the sensor unit. A position sensitive photodiode that emits a signal may be used as the reflected wave scattered wave detection means. In this case, both the infrared generator 141 and the position sensitive photodiode are rotatably provided.

  In this case, the distance to the detection object DT can be obtained according to the magnitude of the output signal output from the position sensitive photodiode. Further, the rotation angle of the detection object DT can be obtained from the rotation angle of the infrared ray generator 141 when the reflected infrared ray is detected by the position sensitive photodiode.

  Further, instead of scanning infrared rays, the infrared rays may be emitted so as to be preliminarily condensed in a vertical direction with a cylindrical lens or the like and spread in a fan shape in the horizontal direction. In this case, the position of the detection object DT can be detected by using an image sensor such as a CCD or CMOS sensor.

<Antenna 182, Antenna switch 184, Storage medium communication means 186>
As shown in FIGS. 1 and 2, four antennas 182 a to 182 d are provided on the upper surface of the mirror 108. As shown in FIG. 2, storage media 200a to 200d described later are arranged so as to be close to the four antennas 182a to 182d. These antennas 182a to 182d wirelessly communicate with the storage media 200a to 200d, thereby reading content data from the storage media 200a to 200d and writing content data to the storage media 200a to 200d.

  A connection line (not shown) is electrically connected to each of the four antennas 182a to 182d. The connection line is provided along the support 106 so as to be electrically connected to the antenna switch 184 shown in FIG. The antenna switch 184 includes a switching element and constitutes a multiplexer. The antenna switch 184 is electrically connected to the storage medium communication unit 186 through connection lines of a selection signal connection line for selection signals and a data connection line for data transmission / reception. Further, the storage medium communication unit 186 is electrically connected to a control device 160 described later.

  The storage medium communication unit 186 supplies a selection control signal to the antenna switch 184 via a selection signal connection line that connects the antenna switch 184 and the storage medium communication unit 186. The antenna switch 184 drives the switching element according to the supplied selection control signal and selects one of the four antennas 182a to 182d (hereinafter, the selected antenna is referred to as a selection antenna 182). ). The selection antenna 182 is electrically connected to the control device 160 (to be described later) via the data connection line by the antenna switch 184, thereby forming a single electrical path from the selection antenna 182 to the control device 160. Is done.

  The above-described storage medium communication unit 186 includes a reader / writer. The reader / writer emits electromagnetic waves of a predetermined frequency to the storage media 200a to 200d, thereby supplying power to the storage media 200a to 200d and writing content data from the control device 160 to the storage media 200a to 200d. Content data is read from the storage media 200a to 200d to the control device 160.

  Further, the storage medium communication unit 186 has a configuration similar to that of a reader / writer that communicates with a normal wireless tag, and in order to perform wireless communication with the storage media 200a to 200d, a balanced-unbalanced converter (not shown). ), A bandpass filter (not shown), a demodulator (not shown), and a modulator (not shown).

  In this way, content data is transmitted from the control device 160 to the storage medium 200 by transmitting an electromagnetic wave from the selection antenna 182 selected by the antenna switch 184, and content data is transmitted from the storage medium 200 to the control device 160. You can send data.

  Note that although four antennas 182a to 182d are shown as the antenna 182 in this embodiment, the number of antennas may be determined as necessary.

<< Control Device 160 (Projection Control Unit, Detection Discrimination Unit) >>
As shown in FIG. 2, the control device 160 is disposed on the upper side of the infrared generation device 141 at the bottom of the main body 100. An outline of the function of the control device 160 is shown in FIG. 4 as a block diagram. FIG. 4 also shows the illumination optical system 110 and the imaging optical system 130 that are not electrically connected to clarify the configuration of the control device 160.

<CPU 162, ROM 164, RAM 166, I / O bus 168>
The control device 160 includes a CPU (Central Processing Unit) 162 that performs operations and the like, a ROM (Read Only Memory) 164, and a RAM (Random Access Memory) 166. The CPU 162, ROM 164, and RAM 166 are electrically connected by an input / output bus 168 so that data signals and address signals can be input / output.

  The CPU 162 executes a control program shown in FIGS. 6, 8 and 11 described later. The ROM 164 stores these control programs in advance. The ROM 164 also stores various application software for projecting content data, which will be described later, as a projected image. The application software is read from the ROM 164 and activated in accordance with the type of content data. For example, a viewer for displaying various data such as data created by document creation software, data created by spreadsheet software, data created by presentation software, image data, and video data as projected images Application software such as the above is stored in advance so that it can be executed. The RAM 166 stores variable values and various data used by the control program, and various tables shown in FIGS. 7, 9, 10 and 13, which will be described later, as the control program is executed. Is done.

<Detection device 140>
The above-described detection device 140 is also electrically connected to the input / output bus 168 of the control device 160. Specifically, the image sensor 154 of the detection device 140 is electrically connected to the input / output bus 168 via an interface circuit (not shown). In this way, the output signal emitted from the image sensor 154 is supplied to the input / output bus 168. The CPU 162 can acquire an image of the detected object by obtaining this output signal.
The detection device 140 detects the detection object DT. As described above, the object to be detected DT includes both the operation object BD and the object to be presented PN, and can perform gesture detection and person detection.

<Lamp control circuit 172>
The control device 160 includes a lamp control circuit 172. The lamp control circuit 172 is also electrically connected to the input / output bus 168. The lamp 112 described above is electrically connected to the lamp control circuit 172. When the control signal generated from the CPU 162 is supplied to the lamp control circuit 172, the lamp control circuit 172 controls lighting, extinguishing, light emission intensity, and the like of the lamp 112 according to the supplied control signal.

<Display memory 174>
The control device 160 includes a display memory 174. The display memory 174 is also electrically connected to the input / output bus 168. In the display memory 174, data of various contents stored in the storage medium 200 (file storage means) described above is converted into display data and stored in accordance with a control signal issued from the CPU 162. The

<Image processing circuit 176>
The control device 160 includes an image processing circuit 176. The image processing circuit 176 is also electrically connected to the input / output bus 168. The above-described display memory 174 and the light modulation element 120 are electrically connected to the image processing circuit 176. The image processing circuit 176 issues a drive signal for driving the light modulation element 120 to the light modulation element 120 based on the data stored in the display memory 174 in accordance with the control signal issued from the CPU 162. As described above, the light modulation element 120 performs an operation of passing or blocking the light reaching the light modulation element 120 in accordance with the drive signal supplied from the image processing circuit 176. In this way, various contents stored in the file storage unit 170 can be projected onto the surface of the desk 12 as projection images.

In the block diagram shown in FIG. 4 described above, the lamp 112, the lamp control circuit 172, the display memory 174, the image processing circuit 176, and the light modulation element 120 are shown one by one. When a plurality of elements 120 are used, it is preferable to use a plurality of these lamps 112, lamp control circuits 172, display memories 174, and image processing circuits 176 according to the number of light modulation elements 120. In this way, the projection area can be enlarged and the resolution of the projected image can be increased. Therefore, even when content consisting of detailed images is projected as a projected image, it is clear. Can be displayed.
When a plurality of display memories 174 are provided, the addresses of the plurality of display memories 174 correspond to each other in order to project a matched projection image at the boundary between adjacent projection areas. Is determined in advance.

<Illumination optical system 110, imaging optical system 130>
As shown in FIG. 4, the light emitted from the lamp 112 controlled by the lamp control circuit 172 is guided to the illumination optical system 110 described above. The light guided to the illumination optical system 110 is converted into illumination light having a desired shape and guided to the light modulation element 120 controlled by the image processing circuit 176. The light guided to the light modulation element 120 is modulated and guided to the imaging optical system 130 described above. In FIG. 4, the guided light is indicated by a dashed arrow.

<Control panel 190>
Further, the control device 160 includes a control panel 190. The control panel 190 is provided on the side surface of the main body 100 (not shown). The control panel 190 is a panel for an operator to operate the projector 10. For example, the control panel 190 controls the power on / off of the projector 10, sets communication conditions, reads content data from the storage medium 200, and writes data to the storage medium 200. A part is formed.
The control panel 190 is electrically connected to the input / output bus 168, and a control signal generated from the control panel 190 is supplied to the CPU 162 in order to control the projector 10.

<< Storage Medium 200 >>
The storage medium 200 is configured separately from the projector 10. FIG. 5 is a diagram showing a schematic configuration of the storage medium 200. The storage medium 200 may be, for example, a non-contact type IC card or the like, has a predetermined storage capacity, and may be configured to be able to communicate with the control device 160 via the storage medium communication unit 186 described above.

  The storage medium 200 includes a plastic casing 202, an antenna 204, and an IC chip 206. An antenna 204 is formed along the outer periphery of the housing 202. The IC chip 206 is electrically connected to the antenna 204. A non-volatile memory 208 having a predetermined storage capacity is electrically connected to the IC chip 206. Content data is stored in the non-volatile memory 208.

  Further, as described above, the storage medium 200 only needs to be able to communicate with the control device 160 via the storage medium communication unit 186, and the IC chip 206 only needs to be able to perform desired control, and may include a central processing unit (CPU). , Which may not be included.

  When an electromagnetic wave is emitted from the reader / writer of the storage medium communication unit 186 described above, the antenna 204 receives the electromagnetic wave, supplies power to the IC chip 206, and uses the electromagnetic wave as a carrier wave to transmit content data to the storage medium communication unit 186. Or the content data is transmitted to the storage medium communication means 186. When the content data is transmitted from the storage medium communication unit 186, the content data is stored in the nonvolatile memory 208 of the IC chip 206. When transmitting content data to the storage medium communication unit 186, the content data stored in the nonvolatile memory 208 of the IC chip 206 is read and transmitted to the storage medium communication unit 186.

  The IC chip 206 also has a read-only memory, and a storage medium ID described later is stored in the read-only memory. The storage medium ID is storage medium identification information for identifying the storage medium 200 and is different for each storage medium 200. Further, the storage medium ID may be stored in a part of the non-volatile memory 208 without using the read-only memory.

  As described above, in the present embodiment, it is assumed that four people meet around the projector 10. One of the four persons is a content presenter α who is a presenter of the presentation, and the remaining three are presentees β, γ, and δ in which the content is presented. It is preferable that the presenter α and the presentees β, γ, and δ each own the storage medium 200 separately.

  Hereinafter, the presenter α owns the storage medium 200a, the presentee β owns the storage medium 200b, the presentee γ owns the storage medium 200c, and the presentee δ owns the storage medium 200d. , Shall be used. In particular, in the storage medium 200a owned by the content presenter α, data of various types of content projected as projection images are stored in advance. The content data can be any data that can be presented as content such as data created by document creation software, data created by spreadsheet software, data created by presentation software, image data, video data, etc. That's fine. As described above, the ROM 164 and the RAM 166 of the control device 160 of the projector 10 are stored in advance so that application software such as a viewer for displaying the data of these contents as a projected image can also be executed.

  In the above-described example, the storage medium 200 is a non-contact type IC card. However, the storage medium 200 can communicate with the control device 160 wirelessly and has a storage capacity enough to store content data. What is necessary is just to have.

  Further, although a case where one storage medium 200 communicates with one antenna 182 is shown in this embodiment, one antenna 182 may communicate with two or more storage media 200.

<< Control processing >>
Hereinafter, control of the projector 10 performed in the control device 160 will be described. 6, 8, and 11 are flowcharts showing an outline of processing by a program stored in advance in the ROM 164 described above.

  In the following, it is assumed that the projector 10 has been activated in advance, and that the control device 160 described above has completed activation processing such as initialization of various variables used for control, and the projector 10 is in steady operation. In addition, the flowcharts shown in FIGS. 6, 8, and 11 show only one example for executing the control process in the control device 160, and are not limited to this process procedure.

  As described above, the antenna 182 includes the four antennas 182a to 182d, and can communicate with the four storage media 200a to 200d via these antennas 182a to 182d. Specifically, as shown in FIG. 12, the four antennas 182a to 182d are attached to the upper surface of the mirror 108 at intervals of about 90 degrees. The direction in which the antenna 182a is attached is 0 degrees, the direction in which the antenna 182b is attached is 90 degrees, the direction in which the antenna 182c is attached is 180 degrees, and the direction in which the antenna 182d is attached Is an angle of 270 degrees.

  As described above, in the present embodiment, it is assumed that four people, the content presenter α and the presentees β, γ, and δ to be presented with the content, surround the projector 10. Specifically, the content presenter α sits in front of the antenna 182a, that is, at a position of 0 degrees, and the presenter β sits in front of the antenna 182b, that is, at a position of 90 degrees, and is presented. It is assumed that the person γ sits in front of the antenna 182c, that is, a position at an angle of 180 degrees, and the person to be presented δ sits in front of the antenna 182d, that is, a position at an angle of 270 degrees.

Further, the presenter α owns the storage medium 200a, the presentee β owns the storage medium 200b, the presentee γ owns the storage medium 200c, and the presentee δ owns the storage medium 200d. . Therefore, at the time of the meeting, as shown in FIG. 12, the presenter α places the storage medium 200a at a position close to the antenna 182a, and the presentee β places the storage medium 200b at a position close to the antenna 182b. It is assumed that the person to be presented γ places the storage medium 200c close to the antenna 182c, and the person to be presented δ places the storage medium 200d close to the antenna 182d. . Thus, in the present embodiment, the presenter α corresponds to the antenna 182a, the person to be presented β corresponds to the antenna 182b, the person to be presented γ corresponds to the antenna 182c, and the person to be presented δ is , Corresponding to the antenna 182d.
Furthermore, it is assumed that data of contents A, B, C, and D used in the presentation is stored in advance in the storage medium 200a owned by the presenter α.

<Main processing>
FIG. 6 is a flowchart showing an outline of main processing executed in the control device 160 of the projector 10.
First, a subroutine for communication position detection processing shown in the flowchart of FIG. 8 described later is called and executed (step S601). By executing this subroutine, a communicable storage medium 200 can be detected, and a projection state table shown in FIG. 7 and an antenna correspondence table shown in FIG. 9 are generated or updated.

  Next, communication is performed with the storage medium 200 corresponding to the antenna having the variable na = 0 among the four antennas 182a to 182d described above, and content data is read from the storage medium 200 (step S602). The variable na indicates an antenna number (hereinafter referred to as an antenna number na). As described above, the four antennas 182a to 182d are provided on the upper surface of the mirror 108 of the projector 10 approximately every 90 degrees. In this embodiment, the antenna with antenna number 0 (na = 0) is the antenna 182a, the antenna with antenna number 1 (na = 1) is the antenna 182b, and the antenna with antenna number 2 (na = 2). Is the antenna 182c, and the antenna with the antenna number 3 (na = 3) is the antenna 182d. Thus, in the present embodiment, the variable na takes one of values 0, 1, 2, and 3.

  As will be described later, the position where the content is projected can be specified by the antenna number (see FIG. 9). Further, the content being projected can be specified by the antenna number (see FIG. 7). Furthermore, the storage medium that can communicate with the antenna can be specified by the antenna number. Therefore, the content projected on the predetermined position can be associated with the storage medium via the antenna number.

  As described above, the antenna with the antenna number 0 (na = 0) is the antenna 182a. As described above, the presenter α places the storage medium 200a at a position close to the antenna 182a. For this reason, the storage medium 200a can communicate via the antenna 182a. Therefore, the process of step S602 described above is a process of communicating with the storage medium 200a owned by the presenter α and reading the data of the contents A, B, C, and D stored in the storage medium 200a.

  Next, the content is projected using the data of the contents A, B, C, and D read in the process of step S602 (step S603). Specifically, a position where the content is to be projected (hereinafter referred to as a projection position) is read out from the antenna correspondence table (see FIG. 9) generated in step S601, and the content is projected onto the projection position. As shown in FIG. 9, the range of the projection position corresponding to the antenna 182a with the antenna number 0 is a range of −45 to 45 degrees. Therefore, the projection position of the content is determined to be included in this range. Note that the projection position of one content may be in the range of −45 to 45 degrees, and may be determined as appropriate according to the size of the projected image of the content and the number of content. For example, in the case of projecting two content projection images, the size of the projection image is such that these two content projection images do not overlap and fall within a range of −45 to 45 degrees. And the projection position are determined.

  As described above, the range of the projection position corresponding to the antenna number 0 is set to a range of −45 to 45 degrees, and the processing in step S603 is executed, so that the content is displayed in the peripheral area 14 of the desk 12 in front of the presenter α. Projected images of A, B, C, and D are projected (see FIG. 12A). That is, by executing the process of step S603, the projected images of the contents A, B, C, and D are projected onto the peripheral area 14 of the desk 12 in front of the presenter α itself. In this way, the presenter α can project the projected image of the content to be presented to the presentees β to δ in front of the presenter α itself.

  Furthermore, by executing the processing in step S603, a flag table indicating the projection state of the content (hereinafter, “projection state table”) is updated. The projection state table is a table that stores a projection state for each content. This projection state table is stored in a predetermined storage area of the RAM 166 of the control device 160.

  An example of the projection state table is shown in FIG. In FIG. 7, the value 1 indicates that the content is projected, and the value 0 indicates that the content is not projected.

  The first column of the projection state table shown in FIG. 7 is a data ID (file name) for identifying content, and the second to fifth columns are antenna numbers na. The antenna number na here is for indicating the projection position of the content, and for specifying the presenter α and the presentees β to δ. As described above, the presenter α corresponds to the antenna 182a, the presentee β corresponds to the antenna 182b, the presentee γ corresponds to the antenna 182c, and the presenter δ corresponds to the antenna 182d. To do. Therefore, the presenter α and the presentees β to δ can be specified by designating the antenna number. Therefore, as in the projection state table shown in FIG. 7, by storing information on whether or not the contents A to D are projected for each antenna number, any one of the contents A to D is stored. Whether it is presenting to the presenter α and the presentees β to δ can be acquired.

  Since the contents A to D are not projected at the beginning when the projector 10 is activated, all the values stored in the projection state table are 0 as shown in FIG. Furthermore, as described above, by executing the process of step S603, the projected images of the contents A, B, C, and D are projected in front of the presenter α. Therefore, as illustrated in FIG. For antenna number 0, all values of contents A, B, C, and D are 1. As described above, the antenna number 0 corresponds to the presenter α. In this way, during the process of projecting the projected image of the content, by updating the projection state table as shown in FIG. 7, any one of the contents A to D is changed to the presenter α and the presentee β. It is possible to obtain whether it is presented in ~ δ.

  After executing the process of step S603, it is determined whether or not the operation is finished (step S604). This determination process is a process of determining whether or not the end switch of the control panel 190 of the projector 10 has been operated. When it is determined that the operation is finished (YES), the main process is immediately terminated. Note that the operation end in step S604 may be performed not only by the end switch of the control panel 190 but also by a gesture.

  On the other hand, when it is determined that the operation has not ended (NO), it is determined whether or not any gesture has been performed by the presenter α using the detection result of the detection device 140 (step S605). When it is determined that no gesture has been made by the presenter α (NO), the process returns to step S604 described above.

  When it is determined that a gesture has been made by the presenter α (YES), it is determined whether or not the gesture is intended to move in a manner that circulates a projected image of predetermined content (step S606). The determination processing in step S606 is a gesture for projecting a projected image of predetermined content in front of the presentees β to δ, that is, predetermined material for presentation is given to the presenters β to δ. It is determined whether or not the gesture is for distribution. The gesture by the presenter α is for presenting predetermined content, for example, for designating and presenting one content among the contents A, B, C, and D. The predetermined content may be presented not only by a gesture but also by an operation of the control panel 190.

  If it is determined in step S606 that the gesture is not for moving in a manner that circulates the projected image of the predetermined content (NO), a process corresponding to the gesture made by the presenter α is executed. (Step S607). The processing in step S607 is a gesture other than a gesture for projecting a projected image of a predetermined content in front of the presentees β to δ. For example, the projected image of the content is reduced or enlarged. There are some that project content or project content in a manner that rotates the projected image of the content to rotate.

  When it is determined in the determination processing in step S606 that the gesture is for moving in a manner that circulates the projected image of the predetermined content (YES), that is, the projected image of the content of the presentees β to δ When it is determined that the gesture is for projecting forward, a process of projecting by moving the projected image of the predetermined content in a manner that circulates is started (step S608). By this processing, a projected image of predetermined content is projected so as to move along the periphery of the desk 12.

  Next, it is determined whether or not there has been an instruction regarding the presentation destination of the projected image of the predetermined content by the gesture (step S609). The determination process in step S609 is a process for determining whether or not an instruction has been given by the gesture of the presenter α with respect to the presentation destination of the predetermined content, and an instruction by the gesture of the presenter α with respect to the distribution destination of the presentation material This is a process for determining whether or not there has been.

  That is, first, the projection images of the contents A, B, C, and D are projected in front of the content presenter α by the process of step S603 described above. After that, by the determination process in step S609, the predetermined content to be presented among the contents A, B, C, and D and the predetermined presentee to be presented among the presenters β to δ are represented by the presenter α. It can be defined and presented by gestures. In particular, when it is desired to change the content to be presented depending on the presenters β to δ, for example, there is content that may be presented to one presentee but not to be presented to the other presentee. In such a case, the predetermined content to be presented can be designated according to the presentees β to δ by the gesture of the presenter α. Note that the instruction regarding the presentation destination of the projected image of the predetermined content may be given not only by the gesture of the presenter α but also by operating the control panel 190 of the projector 10.

  If it is determined in the determination processing in step S609 that an instruction about the presentation destination of the projection image of the predetermined content has been given by the gesture (YES), the projection image of the predetermined content is displayed at the presentation destination designated by the gesture. The display is performed in a stopped state (step S610). The projection position to be displayed in such a manner that the projected image of the content is stopped in the process of step S610 is determined by referring to the range of the projection position stored in the second column of the antenna correspondence table shown in FIG. be able to. By executing the processing in step S610, a projected image of a predetermined content can be projected on the peripheral area 14 of the desk 12 in front of the instructed person, and there is an instruction from the presenter α. Predetermined materials for presentation can be distributed only to the person to be presented.

  On the other hand, when it is determined that there is no instruction about the presentation destination of the projection image of the predetermined content (NO), the projection image of the content is stopped in front of the communicable storage media 200b to 200d. It is displayed (step S611). Whether or not there is a communicable storage medium 200b to 200d may be determined based on whether or not the storage medium ID is stored in the column of the third column of the antenna correspondence table shown in FIG. When it is determined that there are communicable storage media 200b to 200d, the content projection position may be determined with reference to the projection position range stored in the second column of the antenna correspondence table shown in FIG.

  The process of step S611 described above is for simultaneously presenting predetermined content to all of the presentees β to δ participating in the meeting, and the presentation material is presented to all of the presentees β to δ. It will be distributed at the same time. Unlike the processing of step S610 described above, for the predetermined content, it is not necessary to select the presentees β to δ, and when the predetermined content may be presented to all the presentees β to δ, By the processing in step S611, predetermined contents can be simultaneously presented to all of the presentees β to δ, and distribution of materials can be performed easily and quickly.

  Further, in the above-described processing of step S611, if there are communicable storage media 200b to 200d, refer to the projection position range stored in the second column of the antenna correspondence table shown in FIG. Since the content can be presented only by determining the projection position of the content, no instruction from the presenter α for presentation is required. For this reason, in the case where the presentees β to δ wish to have the content presented in advance and the presenter α also permits this, the presentees β to δ store the storage media 200b to 200d. Is placed in a position where it can communicate with the antenna, and the content is immediately presented. In this way, the work of presenting content, that is, the work of distributing presentation materials can be simplified.

  As described above, the presenters β to δ have the storage media 200b to 200d installed on the projector 10 so that they can communicate via the antennas 182b to 182d. For this reason, by referring to the antenna correspondence table shown in FIG. 9 described later, the projection position of the content is determined for each of the presenters β to δ, and the peripheral area 14 of the desk 12 in front of each of the presenters β to δ. In addition, a projected image of the content can be projected, and the content can be presented to the presentees β to δ. As will be described later, whether or not there are communicable storage media 200b to 200d can be determined by a communication position detection process called and executed in the process of step S601.

  By executing the processing of step S610 or S611 described above, the projected image of the content is projected on the peripheral area 14 of the desk 12 in front of each of the presenters β to δ. It is distributed from α.

  By executing the processing in step S610 or S611 described above, the content A, B, C, or D can be presented to the presentees β to δ. One example is shown in FIG. In this example, the contents A, B, and C are presented to the person to be presented β, the contents B, C, and D are presented to the person to be presented γ, and the content C is presented to the person to be presented δ.

  Further, the projection state table is also updated by executing the process of step S610 or S611. One example is shown in FIG. In the example shown in FIG. 7C, for antenna number 0, all values of contents A, B, C, and D are 1, and for antenna number 1, the values of contents A, B, and C are 1. For antenna number 2, the values of contents B, C, and D are 1, and for antenna number 3, the value of content C is 1. Therefore, by reading the values stored in the projection state table of the example shown in FIG. 7C, the contents A, B, C, and D are presented to the presenter α, and the presentee β is presented to the presenter β. , Contents A, B and C are presented, contents B, C and D are presented to the presentee γ, and contents C are presented to the presented person δ, that is, FIG. It can be obtained that the content is projected as in the example shown in FIG.

  After executing the above-described steps S607, S610, and S611, the projection state table is updated (step S612). The display may be erased by processing according to the gesture, and even in such a case, the projection state table can be updated by executing the processing in step S612. It is determined whether or not an operation for saving content data has been performed (step S613). This operation may be performed by a gesture for indicating an operation for saving or by operating the control panel 190 of the projector 10. If it is determined that an operation for saving content data has not been performed (NO), the process returns to step S604 described above.

  On the other hand, when it is determined that the operation for saving the content data has been performed (YES), a communication position detection process subroutine shown in the flowchart of FIG. 8 to be described later is called and executed (step S614). This process is the same as the process in step S601 described above. Here, by executing this process, even if the storage medium 200 increases or decreases during the execution of the processes of steps S602 to S613, the presence of a storage medium that can be communicated is confirmed. Since it is updated, it is possible to accurately continue the storage processing and reading processing of the content data.

  Next, a subroutine for content data storage processing shown in the flowchart of FIG. 11 to be described later is called and executed (step S615), and the processing returns to step S604 described above.

<Communication position detection processing>
FIG. 8 is a flowchart showing a subroutine for executing a communication position detection process that is called and executed in the processes of steps S601 and S614 of the subroutine of FIG.

  First, the value of the variable na indicating the antenna number is initialized, for example, set to 0 (step S701). As described above, the projector 10 is provided with the four antennas 182a to 182d. By setting the value of the variable na to 0, it means that the antenna 182a with the antenna number 0 is specified, and by setting the value of the variable na to 1, it means that the antenna 182b with the antenna number 1 is specified. Setting the value of the variable na to 2 means designating the antenna 182c with the antenna number 2, and setting the value of the variable na to 3 means designating the antenna 182d with the antenna number 3.

  Next, when the storage medium communication unit 186 issues a selection control signal to the antenna switch 184, the switch of the antenna switch 184 is switched to form an electrical connection with the antenna 182 corresponding to the antenna number na ( Step S702).

  For example, when the process of step S702 is first executed, na = 0 is set in the process of step S701, so that the antenna 182a with the antenna number 0 is selected by the antenna switch 184, and the antenna 182a and the storage medium communication The unit 186 is electrically connected to form a single electrical path from the antenna 182a to the controller 160.

  Next, it is determined whether or not there is a response from the storage medium 200 via the antenna 182 with the selected antenna number na (step S703). With this determination process, it is possible to determine whether there is a storage medium 200 that can communicate with the antenna 182 of the selected antenna number na. Note that the determination processing in step S703 determines whether or not there is a response from the storage medium 200, and therefore communicates with the storage medium 200 even when the storage medium 200 physically exists. If not, it is determined that there is no communicable storage medium 200.

  When it is determined that there is a response from the storage medium 200 (YES), communication is performed between the projector 10 and the storage medium 200 (step S704). In this communication, for example, storage medium identification information (hereinafter referred to as a storage medium ID) for identifying the storage medium 200 is read from the storage medium 200, or content data stored in the storage medium 200 is read. For example, information (hereinafter referred to as a data ID) for identifying content data is acquired by reading from the storage medium 200. The data ID may be information that can identify a file name for designating content data or other content data.

  Next, it is determined whether or not the communication executed in step S704 has been completed (step S705). If it is determined that the communication has not ended (NO), the process returns to step S704 described above. On the other hand, when it is determined that the communication has ended (YES), the correspondence table between the antenna 182 and the storage medium 200 (hereinafter referred to as the antenna correspondence table) is updated (step S706).

  One example of this antenna correspondence table is shown in FIG. The antenna correspondence table is stored in a predetermined storage area of the RAM 166 of the control device 160. As shown in FIG. 9, the first column of the antenna correspondence table indicates the antenna number, the second column indicates the range of the projection position of the content corresponding to the antenna of the antenna number in angle, and the third column is The storage medium ID of the storage medium 200 acquired by communicating via the antenna is shown. This storage medium ID can be acquired by executing the process of step S704 described above.

  By executing the processing in step S706 described above, the column in the third column of the antenna correspondence table is updated for each antenna number. In the example shown in FIG. 9, as a result of trying to communicate via the antenna 182a with the antenna number 0, the storage medium ID of the storage medium 200 that has been able to communicate with the antenna 182a is 0001, and via the antenna 182b with the antenna number 1. As a result of the communication, the storage medium 200 that can communicate with the antenna 182b does not exist (value is 0), and the storage that can communicate with the antenna 182c as a result of attempting to communicate via the antenna 182c with the antenna number 2 The storage medium ID of the medium 200 is 0011, and as a result of attempting to communicate via the antenna 182d with the antenna number 3, the storage medium ID of the storage medium 200 that can communicate with the antenna 182d is 0008. As shown for the antenna 182b described above, 0 is stored when communication with the storage medium is not possible as a result of communication.

  FIG. 9 shows an example of the antenna correspondence table. In the present embodiment excluding FIG. 9, as described above, the storage medium is located at a position close to the antenna 182a with the antenna number 0. 200a is placed, and the storage medium 200a is in a state where it can communicate via the antenna 182a. The storage medium 200b is placed at a position close to the antenna 182b with the antenna number 1, and the storage medium 200b is in a state where communication is possible via the antenna 182b. The storage medium 200c is placed at a position close to the antenna 182c with the antenna number 2, and the storage medium 200c is in a state where communication is possible via the antenna 182c. The storage medium 200d is placed at a position close to the antenna 182d with the antenna number 3, and the storage medium 200d is in a state in which communication is possible via the antenna 182d. Therefore, in the present embodiment excluding FIG. 9, the third column of the antenna correspondence table stores the storage medium ID of the storage medium 200a for the antenna number 0, and stores the storage medium 200b for the antenna number 1. It is assumed that the medium ID is stored, the antenna number 2 stores the storage medium ID of the storage medium 200c, and the antenna number 3 stores the storage medium ID of the storage medium 200d.

  In this manner, by storing the storage medium ID in the antenna correspondence table, the position where the storage medium owned by the person to be presented moves is changed as the subject moves to change the seat. Even if the antenna that communicates with the storage medium that you own is changed from one antenna to another, the content of the content to be projected and the data to be stored are saved according to the storage medium ID. It can be determined accurately. Thus, the storage medium and its owner can be specified by the storage medium ID.

  Furthermore, the projection position range in the second column of the antenna correspondence table shown in FIG. 9 is determined in advance, and this projection position range is stored in advance in the ROM 164 of the control device 160. Therefore, the range of the projection position in the second column of the antenna correspondence table is read from the ROM 164 of the control device 160 and written to the RAM 166 when the control device 160 is activated, thereby generating the antenna correspondence table. .

  The second column of the antenna correspondence table indicates the range of the projection position of the content as described above. As described above, in the present embodiment, it is assumed that four people meet around the projector 10. For this reason, it is preferable to project the content in four directions so that the content can be presented for each of four people. In addition, the four humans individually have storage media 200a to 200d, and four antennas 182a to 182d are provided in order to communicate between the storage media 200a to 200d and the projector 10. Yes. As described above, the four antennas 182a to 182d are attached to the upper surface of the mirror 108 of the projector 10 approximately every 90 degrees. Thus, since the four antennas 182a to 182d are associated with the storage media 200a to 200d owned by the four people, the projection position of the content presented to the four people is also set to the four antennas 182a to 182d. It is preferable to associate them. In this way, each of the four people sits around the desk 12 on the basis of the position where the four antennas 182a to 182d are provided, and each person is possessed at each sitting position. The storage medium 200 can be placed close to the antenna 182 and the content can be presented at that position.

  For example, as shown in FIG. 12, the presenter α sits in front of the antenna 182a (position of 0 ° shown in FIG. 12), and the person to be presented β is in front of the antenna 182b (position of 90 ° shown in FIG. 12). ), The person to be presented γ sits in front of the antenna 182c (position of 180 ° shown in FIG. 12), and the person to be presented δ sits in front of the antenna 182d (position of 270 ° shown in FIG. 12). At the position where the presenter α and the presentees β to δ are sitting, the presenter α places the storage medium 200a at a position close to the antenna 182a, and the presenter β is stored at a position close to the antenna 182b. The medium 200b is placed, the presenter γ can place the storage medium 200c at a position close to the antenna 182c, and the presenter δ can place the storage medium 200d at a position close to the antenna 182d. Therefore, it is preferable that the projected image of the content is projected so that the content is presented at the position where the presenter α and the presentees β to δ are sitting.

  The range of the projection position of the second column of the antenna correspondence table shown in FIG. 9 is determined from such a viewpoint, and the projection position of the content is −45 to 45 degrees with respect to the antenna 182a with the antenna number 0. The content projection position is 45 to 135 degrees with respect to the antenna 182b with the antenna number 1, the content projection position is 135 to 215 degrees with respect to the antenna 182c with the antenna number 2, and the antenna 182d with the antenna number 3 On the other hand, the projection position of the content was set to 215 to −45 degrees. When projecting a projected image of content, it is sufficient if it is within the range of values shown in the second column of the antenna correspondence table, and the projection position is appropriately determined according to the size of the projected image of content and the number of content. Just do it.

  In this way, by using the antenna correspondence table shown in FIG. 9, the content projection position and the storage media 200a to 200d can be associated with each other via the antenna number.

  After executing the processing of step S706 described above, a correspondence table (hereinafter referred to as a storage state correspondence table) between the data ID read in step S704 and the antenna number is updated (step S707).

  An example of the storage state correspondence table is shown in FIGS. 10 (a) and 10 (b). In FIG. 10, the value 1 indicates that the content data is stored, and the value 0 indicates that the content data is not stored.

  This saved state correspondence table is also stored in a predetermined storage area of the RAM 166 of the control device 160. As shown in FIGS. 10A and 10B, the first column of the saved state correspondence table indicates the data ID, and the second column indicates the antenna number. In the example shown in FIGS. 10A and 10B, there are four different contents of file names A, B, C, and D that are data IDs.

  In the example shown in FIG. 10A, the content data of the file names A, B, C, and D are stored only in the storage medium that can communicate with the antenna 182a with the antenna number 0. By referring to the antenna correspondence table shown in FIG. 9 described above, the storage medium 200a can communicate with the antenna 182a with the antenna number 0. Therefore, by using the example storage state correspondence table shown in FIG. 10A and the antenna correspondence table shown in FIG. 9, the data of the contents of the file names A, B, C, and D are stored in the storage medium 200a. Be able to get that.

  As described above, the owner of the storage medium 200a is the presenter α, and the storage medium 200a stores content data of file names A, B, C, and D used in the presentation in advance. Accordingly, FIG. 10A shows that only the presenter α initially has content data of file names A, B, C, and D, and only the storage medium 200a that can communicate with the antenna 182a with antenna number 0. , Indicates that these data are stored.

  Further, the example shown in FIG. 10B shows a state after executing a storage process described later. As a result of the saving process, the content data of the file name A is stored in a storage medium that can communicate with the antenna 182a with the antenna number 0 and the antenna 182b with the antenna number 1. Also, the content data of the file name B is stored in a storage medium that can communicate with the antenna 182a with the antenna number 0, the antenna 182b with the antenna number 1, and the antenna 182c with the antenna number 2. The content data of the file name C is stored in a storage medium that can communicate with the antenna 182a with the antenna number 0, the antenna 182b with the antenna number 1, the antenna 182c with the antenna number 2, and the antenna 182d with the antenna number 2. The content data of the file name D is stored in a storage medium that can communicate with the antenna 182a with the antenna number 0. In the case of the example shown in FIG. 10B, the content data of the file name A is stored in the storage media 200a and 200b by referring to the antenna correspondence table shown in FIG. The content data is stored in the storage media 200a, 200b, and 200c, the content data of the file name C is stored in the storage media 200a, 200b, 200c, and 200d, and the content data of the file name D is stored in the storage medium 200a. You can get memorized. In other words, content data of file names A, B, C, and D is stored in the storage medium 200a that can communicate with the antenna of antenna number 0, and the file name is stored in the storage medium 200b that can communicate with the antenna of antenna number 1. The storage medium 200c that stores data of contents A, B, and C and can communicate with the antenna of antenna number 2 stores the data of contents of file names B and C and can communicate with the antenna of antenna number 3 In 200d, content data of file name C is stored.

  When it is determined in the determination process of step S703 that there is no response from the storage medium 200 (NO) or when the process of step S707 is executed, the value of the variable na is increased by 1 (step S708), and the variable na It is determined whether or not the value of is equal to or greater than the maximum number of antennas nmax (step S709). In the present embodiment, since there are four antennas 182a to 182d, the maximum number of antennas nmax is four.

  If it is determined in step S709 that the value of variable na is less than the maximum number of antennas nmax (NO), the process returns to step S702 described above, and the value of variable na is equal to or greater than the maximum number of antennas nmax. When it is determined that it has become (YES), this subroutine is terminated.

  By executing the subroutine shown in FIG. 8, the antenna correspondence table shown in FIG. 9 can be updated. With this antenna correspondence table, the storage media 200a to 200d that can communicate via each of the four antennas 182a to 182d can correspond to the four antennas 182a to 182d.

  Further, by executing the subroutine shown in FIG. 8, the saved state correspondence table shown in FIG. 10 can be updated. By using the saved state correspondence table and the antenna correspondence table, the storage medium storing the content can be specified in correspondence with the content.

  Furthermore, the antenna correspondence table shown in FIG. 9 described above has a fixed relationship between the antenna number and the antenna. That is, the antenna of antenna number 0 is always antenna 182a, the antenna of antenna number 1 is always antenna 182b, the antenna of antenna number 2 is always antenna 182c, and the antenna of antenna number 3 is Although the antenna 182d is always used, the antenna number and the antenna may be dynamically related. For example, antenna numbers may be assigned in the order in which communicable storage media are detected. In this way, when all the antennas are not used, it is only necessary to specify the antenna number of the antenna being used, so that antenna switching processing and communication processing can be performed quickly.

<Storage processing in storage medium 200>
FIG. 11 is a flowchart showing a subroutine for executing the storage process to the storage medium that is called and executed in the process of step S615 of the main process of FIG.

  First, it is determined whether or not an instruction to execute all the storage media 200a to 200d with which communication is possible has been given (step S1001). The instruction of the storage process may be given by the presenter α by performing a gesture or by operating the control panel 190.

  The instruction of the storage process can be given not only by the presenter α but also by the presentees β to δ. For example, when the content is presented from the presenter α to the presentees β to δ, the presenter β to δ returns the content data and wants to examine the content again, and then the permission of the presenter α is given. It is preferable that content data can be stored.

  For this reason, the presenter α gives an instruction to specify all of the storage media 200a to 200d that can communicate and execute the storage process, and an instruction to execute the storage process by separately specifying the storage media 200a to 200d It is preferable that each of the presenters β to δ can do.

  In the determination process in step S1001, an instruction to specify all the storage media 200a to 200d that can communicate and execute the storage process is not given, that is, only a part of the storage media 200a to 200d that can communicate is specified. When it is determined that an instruction to execute the saving process has been issued (NO), the value of the antenna number n_save corresponding to the designated storage medium is acquired (step S1002), and the value of the variable K is set to 1 (step S1002). S1003). The presenter α and the presenters β to δ operate the control panel 190 even if the presenter α and the presenters β to δ acquire the value of the antenna number n_save. It may be obtained at.

  On the other hand, when it is determined in the determination process in step S1001 that an instruction to execute the storage process by designating all the storage media 200a to 200d that can communicate is given (YES), the value of the variable K is set to 0 ( Step S1004).

  The variable K used in step S1003 or S1004 is a variable indicating whether or not the storage process is executed for all of the storage media 200a to 200d that can communicate, and when K = 0, the storage media 200a to 200a that can communicate. The storage process is executed for all of 200d. When K = 1, the storage process is executed for some of the storage media 200a to 200d that can communicate.

  As described above, the instruction to execute the storage process by specifying all the storage media 200a to 200d that can communicate is given by the presenter α, and the instruction to execute the storage process by separately specifying the storage media 200a to 200d is It is preferable that each of the presentees β to δ can perform. In this case, K = 0 is when the presenter α instructs the storage process, and K = 1 is that each of the presentees β to δ instructs the storage process. Is the time.

  After executing the processing of step S1003 or S1004 described above, it is determined whether or not the value of the variable K is 0 (step S1005). When it is determined that the value of the variable K is not 0 (NO), the value of the variable na indicating the antenna number is set to n_save (step S1006), and when the value of the variable K is determined to be 0 (YES) In this case, the value of the variable na is set to 1 (step S1007). Here, n_save is a value indicating an antenna number corresponding to the storage medium 200a to 200d for which the storage process is designated among the communicable storage media 200a to 200d.

  As described above, in the present embodiment, the presenter α owns the storage medium 200a, and the storage medium 200a is associated with the antenna 182a with the antenna number 0. Also, the presenters β to δ other than the presenter α own the storage media 200b to 200d, and the antennas 182b to 182d with the antenna numbers 1 to 3 are associated with the storage media 200b to 200d. Therefore, the value of the variable na indicating the antenna number is set to 1 in the process of step S1007, and the process is executed by increasing the value of the variable na by 1 in the process of step S1014 described later. The storage process can be executed on the storage media 200b to 200d owned by β to δ.

  After executing the processing of step S1006 or S1007 described above, the data ID of the data of unsaved content among the content projected on the projection position corresponding to the value of the variable na indicating the antenna number is acquired (step S1008). ). In this process, the data ID of the content data projected at the projection position corresponding to the value of the variable na is obtained by referring to the projection state table shown in FIG. The data ID of the content data stored in the corresponding storage medium 200 is acquired by referring to the storage state correspondence table shown in FIG. By comparing the data IDs acquired from these projection state tables with the data IDs acquired from the storage state correspondence table, the data IDs of unsaved content data can be acquired.

  For example, as shown in FIG. 12A, it is assumed that three contents A, B, and C are projected at the projection position corresponding to the antenna 182b with the antenna number 1. This is because the presenter α projects projected images of the three contents A, B, and C in front of the presenter β in order to present the three contents A, B, and C to the presenter β. It is a thing when I did it. In this case, first, A, B, and C are acquired as data IDs by referring to the column of antenna number 1 in the projection state table shown in FIG. Further, by referring to the column of antenna number 1 in the saved state correspondence table shown in FIG. 10A, it is acquired that no content is saved. Therefore, these results are compared, and A, B, and C are acquired as data IDs of unsaved content data.

  After executing the processing of step S1008 described above, it is determined whether or not projection is performed on the projection position corresponding to antenna number 0 using the data of the unsaved content acquired by the processing of step S1008 (step S1009). This process can be determined by first comparing the data ID of the unsaved content data acquired by the process of step S1008 with the saved state correspondence table shown in FIG. 7 corresponding to the value of antenna number 0. it can. As described above, the projection position corresponding to the antenna number 0 is projected by the presenter α. Therefore, the determination process in step S1009 determines whether the data of the content to be stored in the storage media 200b to 200d owned by the presentees β to δ exists in the projection area of the presenter α. It is. For example, as shown in FIG. 14, when the presenter α does not want to save the content B, the projection of the content B is stopped by a gesture before saving. In this way, although the content B is projected on the presentees γ and β, they are not stored in the storage medium.

  When it is determined in the determination process in step S1009 described above that the data of the unsaved content acquired by the process in step S1008 exists in the projection area corresponding to the antenna number 0 (YES), it corresponds to the antenna number 0. Data corresponding to unsaved content data is read from the storage medium 200a and stored in the storage medium 200 corresponding to the value of the antenna number na, thereby saving the unsaved content data (step S1010). This process is a process of copying unsaved content data from the storage medium 200a owned by the presenter α to the storage media 200b, 200c, or 200d owned by the presentees β to δ. When content data is read into the storage unit in the projector at the time of projection, data corresponding to unsaved content data is read from the storage unit in the projector, and a storage medium corresponding to the value of the antenna number na The data of the unsaved content may be saved by storing it in 200.

  By executing the processes in steps S1008 to S1010 described above, the data of the content projected on the projection position corresponding to the value of the antenna number na can be stored in the storage medium 200 corresponding to the value of the antenna number na. it can. That is, the content data projected on the projection position is associated with the storage medium via the antenna number, and the content data projected on the projection position is stored in the storage medium corresponding to the projection position. it can. In this way, when performing the data storage process, the storage process can be performed quickly and easily without specifying the storage medium or the content data to be stored.

  When it is determined in step S1009 described above that there is no unsaved content data acquired in step S1008 in the projection area corresponding to antenna number 0 (NO), or step S1010 is executed. When this happens, the flag value of the saved state correspondence table shown in FIG. 10 is updated according to the data ID of the content data stored in the storage medium 200 corresponding to the value of the antenna number na (step S1011).

  For example, as shown in FIG. 12A, three contents A, B, and C are projected in front of the projection position corresponding to the antenna 182b of the antenna number 1, that is, the person to be presented β, and the person to be presented β It is assumed that the data of the three contents A, B, and C are stored in the storage medium 200b owned by. In this case, before the data of the three contents A, B, and C are stored, the values of the column of antenna number 1 in the storage state correspondence table are all 0 as shown in FIG. Thereafter, by storing the data of the three contents A, B, and C by the process of step S1010 described above, and executing the process of step S1011, as shown in FIG. The value in the column of antenna number 1 is 1 for the three contents A, B, and C.

  After executing the processing of step S1011, it is determined whether or not unsaved data exists (step S1012). For example, as in the above-described example, when the data of the three contents A, B, and C are not saved, there are a plurality of contents data, so that every time one piece of data is saved, step S1012 By determining whether or not there is unsaved data, it is possible to determine whether or not all data has been saved.

  If it is determined in step S1012 that unsaved data exists (YES), the process returns to step S1008 described above. On the other hand, when it is determined that unsaved data exists (NO), it is determined whether or not the value of the variable K is 0 (step S1013). As described above, the variable K is a variable indicating whether or not the storage process is executed for all of the storage media 200a to 200d that can communicate, and when K = 0, all of the storage media 200a to 200d that can communicate. Indicates that the saving process is executed. Therefore, the determination in step S1013 is a determination as to whether or not to execute the storage process for all of the storage media 200a to 200d that can communicate.

  When it is determined that the value of the variable K is 0 in the determination process in step S1013 (YES), the value of the variable na indicating the antenna number is increased by 1 (step S1014), and the value of the variable na is the maximum antenna. It is determined whether or not the number nmax has been reached (step S1015). As described above, in this embodiment, since there are four antennas 182a to 182d, the maximum number of antennas nmax is four. If it is determined in step S1015 that the value of the variable na is less than the maximum number of antennas nmax (NO), the process returns to step S1008 described above. By executing the processes of steps S1014 and S1015, the storage process can be sequentially executed for the storage media 200a to 200d that can communicate with each other.

  When it is determined in step S1013 that the value of variable K is not 0 (NO), or when it is determined in step S1015 that the value of variable na is greater than or equal to the maximum number of antennas nmax (YES). This subroutine is finished. That is, when the storage process is executed for the designated one of the storage media 200a to 200d that can be communicated in the determination process in step S1013, or the storage mediums 200a to 200d that can communicate in the determination process in step S1015. When the storage process is executed for all, this subroutine is terminated.

  As described above, the storage medium 200a and the content projection position (−45 to 45 degrees) are associated with the antenna 182a with the antenna number 0, and the storage medium 200a and the content projection with the antenna 182b with the antenna number 1. The position (45 to 135 degrees) is associated with the antenna 182c with the antenna number 2, the storage medium 200a is associated with the projection position (135 to 215 degrees) of the content, and the antenna 182d with the antenna number 3 is associated with the storage medium. By associating 200a with the content projection position (215 to -45 degrees), the relationship between the projection position of the projection image and the storage medium can be linked via the antenna. In this way, content data projected at a predetermined projection position can be associated with a storage medium, and content data storage processing can be simplified.

  For example, in the example shown in FIG. 12A, the contents A, B, and C are projected in front of the person to be presented β, and the storage medium 200b is associated. In addition, the contents B, C, and D are projected in front of the person to be presented γ, and the storage medium 200c is associated. Furthermore, the content C is projected in front of the person to be presented δ and associated with the storage medium 200d. Therefore, in such a case, when storing the data of the contents projected in front of each of the presentees β to δ, the data of the contents A, B, and C projected in front of the presentee β Is stored in the storage medium 200b, the data of the contents B, C, and D projected in front of the person to be presented γ is stored in the storage medium 200c, and the data of the content C projected in front of the person to be presented δ. May be stored in the storage medium 200d. Thus, even if the content to be projected differs depending on the projection position, only the data of the projected content can be stored in the corresponding storage medium, and the saving process can be simplified.

  Further, a storage prohibition table as shown in FIG. 13 may be stored in a predetermined storage area of the RAM 166 of the control device 160. This storage prohibition table is a table for permitting the projection of content but prohibiting the storage of the data. In FIG. 13, a value of 1 indicates that content storage is prohibited, and a value of 0 indicates that content storage is permitted.

  For example, in the example illustrated in FIG. 13, the value of the content D with the antenna number 2 is set to 1, and storage is prohibited. For this reason, as shown in FIG. 12A, three contents B, C, and D are projected in front of the presentee γ corresponding to antenna number 2, but in FIG. As shown, even if the saving process is performed, only the data of the two contents B and C excluding the contents D are saved in the storage medium 200c. As described above, when the presenter α permits the presentation of the content but does not wish to permit the storage of the content data, the content data desired by the presenter α is obtained by using the storage prohibition table. Can only be saved. In the storage prohibition table shown in FIG. 13, since the storage of content is not prohibited for antenna numbers 0, 1, and 2, as shown in FIG. 12B, storage media 200a, 200b, and 200d are stored. As shown in FIG. 12A, all of the projected content data is stored.

  In the above-described embodiment, the presenter is α and the presentee is β to δ. However, depending on the meeting, presentations may be sequentially performed. Even in such a case, the same processing may be performed by changing the reference antenna number.

1 is a perspective view schematically showing a projector 10 according to the present invention. 2 is a cross-sectional view showing a configuration of a projector 10. FIG. A cross-sectional view (a) in which the main body 100 is cut along a horizontal plane at a location where the infrared ray generator 141 is located, and a cross-sectional view (b) in which the main body 100 is cut along a horizontal plane at a location where the detection target detection device 150 is located. It is. 3 is a block diagram showing an outline of functions of a control device 160. FIG. 2 is a diagram showing a schematic configuration of a storage medium 200. FIG. 3 is a flowchart showing main processing of the projector. It is a figure which shows one example of a projection state table. It is a flowchart which shows the subroutine which is called by step S601 of the main process of FIG. 6, and performs a communication position detection process. It is a figure which shows one example of an antenna corresponding | compatible table. It is a figure which shows one example of a preservation | save state table. FIG. 7 is a flowchart showing a subroutine that is called in step S615 of the main process of FIG. 6 and executes a storage process to a storage medium. It is a figure which shows the relationship between the content projected, antenna 182a-182d, and storage medium 200a-200d. It is a figure which shows one example of a preservation | save prohibition table. It is a figure which shows the relationship between the content projected, antenna 182a-182d, and storage medium 200a-200d.

Explanation of symbols

10 projectors 12 desks (installation stand)
100 Body 110 Illumination optical system (projection means)
130 Imaging optical system (projection means)
140 Detection device (detection means)
141 Infrared generator 150 Detected object detection device 160 Control device (control means)
182a to 182d Antenna 184 Antenna switch (switching means)
186 Storage medium communication means (communication means)
200 storage media

Claims (8)

A projector configured to project an image of at least one content by light emitted from a light source installed on an installation table;
Projecting in such a manner that the image of the at least one content moves around the projector body with the installation table as a projection surface, and after projecting in a manner of moving the image of the at least one content, at least one Projection means for projecting to two fixed projection positions;
Communication means capable of communicating with at least one storage medium in which the content data is stored;
And a control means for associating the content data projected on the projection position with the storage medium based on the projection position.   The projector according to claim 1, wherein the control unit stores content data projected on the projection position in the associated storage medium in accordance with an operation of an operator.   The projector according to claim 1, wherein the communication unit can communicate with the storage medium in a non-contact manner.   The projector according to any one of claims 1 to 3, wherein the communication unit and a placement unit on which the storage medium is placed are provided on an upper portion of the projector body. There are a plurality of the storage media,
The communication means includes a plurality of antennas for communicating with the storage medium,
The control means includes
Switching means for selecting any of the plurality of antennas;
5. The projector according to claim 1, comprising: the storage medium that can communicate via the selected antenna; and a transmission / reception unit that transmits and receives the data of the content.   The projector according to claim 5, wherein the control unit determines the projection position based on a selected antenna. The control means projects the image of the at least one content in a manner to move, then projects in a stationary manner,
A position when the image of the at least one content is projected in a stationary manner is set as the projection position,
The projector according to claim 1, wherein data of a content projected at the projection position is transmitted to the storage medium associated with the projection position.   The projector according to claim 5, wherein the control unit selects the storage medium at a position close to the projection position by the switching unit and communicates with the selected storage medium.

Images