JP2012247449A - Projection type video display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a projector which can perform settings for correction according to a use place such as correction of ambient light, wall color, keystone, zoom, and focus, and also can simplify operations for performing similar settings when reusing the projector at the same place once having set setting information depending on the use place.SOLUTION: A projection type video display device stores a MAC address (or a MAC address and field intensity) of an access point having reached to an antenna of a wireless LAN in association with setting information at a corresponding place, and reads out the associated setting information according to a MAC address (or a MAC address and field intensity) of an access point having reached to a wireless communication unit at start-up of the device.

Description

  The present invention relates to a projection-type image display device (projector).

Projectors are often used in places such as presentations and conferences. Conventionally, the video output of a specific PC is input to the projector and projected on a large screen to share video information with people on the spot. This enabled efficient presentations and meetings.

  In recent years, network technology for connecting multiple PCs and printers has been developed, and it has become common to install wireless communication means such as wireless local area networks (LANs) that do not require cables on PCs. ing.

  Under such circumstances, a method for further improving the efficiency of presentations and meetings by performing wireless communication between the projector 1 and an information device such as a PC 3 equipped with the wireless communication function 31 as shown in FIG. 11 is proposed. Has been.

  At the same time, not only projectors, but also PCs and the like are connected to a network wirelessly, wireless LAN access points are installed in many places.

  A projector 1 equipped with a wireless LAN can connect to a network through an access point 2 installed in a conference room, thereby transmitting fault information through the network and making presentations using files in the network. .

  On the other hand, with advances in miniaturization and weight reduction technology, projectors can be brought into conference rooms, where they can be installed and projected on the spot.

  In that case, the image quality is improved by making settings according to the place of use and the projection screen, such as focus, zoom, keystone, lens shift, wall color, and ambient light, depending on the location where the projection is performed.

  For example, it is desirable that a projector is originally projected onto a screen that has no ambient light other than the projection light, but it is difficult to desire such an environment in a general conference room or the like.

  Therefore, the type, intensity, color, etc. of the illumination light in the projection environment are detected, and the projection light is adjusted (environmental light correction) so as to obtain gradation and color in the absence of ambient light from the information. Therefore, the projected image is more desirable at the projection location.

  However, the place where the projector is used is often different each time it is used.

  In this case, each time the place where the projection is performed needs to be set according to the place of use, such as focus, zoom, keystone, lens shift, wall color, and ambient light.

  This operation is very complicated, and even if it is the same projection location as before, if the previous projection location is different, it is necessary to set again.

  Therefore, Patent Document 1 discloses a method in which setting information depending on the place of use is stored in a lump and is set collectively by an operation from a remote controller or the like.

  FIG. 12 shows the configuration of a conventional projector 1.

  The video input circuit 102 determines the signal type of the input signal input to the input terminal 101. If the input signal is an analog signal, A / D conversion is performed and subsequent processing is performed.

  In the video processing circuit 103, resolution conversion is performed so that the resolution of the input signal matches the display panel 106, and keystone correction is performed.

  The output of the video processing circuit 103 is separated into signals for each color by the display circuit 105, and the display panel 106 is driven so that the output luminance characteristic becomes a target characteristic with respect to the input gradation.

  Incident light from the lamp 107 to the display panel 106 is driven by the display circuit 105 to have a reflectance corresponding to the input signal (in the case of a transmissive projector), and is projected onto the screen through the projection lens group 108. .

  The focus adjustment mechanism 115 drives the projection lens group 108 by the controller 104 so that the projection lens group 108 is positioned according to the focus setting value by the controller 104 for the in-focus distance that varies according to the distance between the projector 1 and the screen 7. It is controlled by that.

  Similarly, the zoom adjustment mechanism 115 is controlled so that the projection lens group 108 is positioned according to the zoom setting value.

  Further, the lens shift adjustment mechanism 116 is controlled so that the projection lens group 108 is positioned according to the lens shift setting value.

  The video processing circuit 103 performs processing so that an image is displayed or can be seen in the same manner as when there is no ambient light according to the set value of the ambient light.

  Here, a value that clarifies what light the ambient light is is set as the ambient light setting value, and the video processing circuit 103 reads the value, and the image is the same as when there is no ambient light, or Processed video processing so that it can be seen.

  Alternatively, the same value may be obtained even if the value related to the video processing that becomes or becomes visible in the same state as when there is no environmental light is set as the setting value of the environmental light, and the video processing circuit 103 performs processing according to the value.

  The image processing circuit 103 and the display circuit 105 are driven so that the keystone, wall color, etc. also correct the trapezoidal distortion of the projected image on the screen 7 in accordance with the set values, and the influence of the wall color.

  As described above, optimum settings are made for the focus, zoom, keystone, lens shift, wall color, ambient light, and the like according to the place of use.

  As shown in FIG. 13, a setting procedure when the projector 1 projects in a certain conference room 1 is shown below.

  In this conference room 1, it is assumed that the optimum focus position is preferably set to focus 1 either automatically or manually.

  Zoom 1, Keystone 1, Lens Shift 1, Wall Color 1, and Ambient Light 1 are set in the same manner.

  When the user operates the operation panel 111 or the remote controller 112, the zoom 1, the keystone 1, the lens shift 1, the wall color 1, and the ambient light 1 add the identification information 1 of the conference room 1 and Is stored in the storage unit 110 as the optimum setting value at the optimum setting value.

  The storage unit 110 has a plurality of setting information storage areas associated with identification information.

  FIG. 14 shows a case where the use of the projector 1 in the conference room 1 is finished and projection is performed in another conference room 2.

  Assume that the optimum setting values, focus 2, zoom 2, keystone 2, lens shift 2, wall color 2, and ambient light 2 in conference room 2 are set by the same procedure as in the case of projection in conference room 1.

  Furthermore, when the user operates the operation panel 111 or the remote controller 112, the focus 2, zoom 2, keystone 2, lens shift 2, wall color 2, and ambient light 2 are added with the identification information 2 of the conference room 2, and the conference It is stored in the storage unit 110 as the optimum set value for the chamber 2.

  In the same procedure, if the location is different from the conference room 1 and the conference room 2 for each different projection location, add another identification information such as different identification information 3 to set it depending on the usage location Store the value.

  When using again in conference room 1 after use in conference room 2, the setting values for each item are the optimal settings in conference room 1, focus 1, zoom 1, keystone 1, lens shift 1, wall color 1 Ambient light is not one.

  Therefore, the user selects identification information 1 that is identification information of the conference room 1 by operating the operation panel 111 or the remote controller 112.

  At this time, the projector 1 reads setting values such as focus 1, zoom 1, keystone 1, lens shift 1, wall color 1, and ambient light 1 corresponding to the identification information 1 from the storage unit 110.

  The projector 1 drives the video processing circuit 103, the display circuit 105, the lens shift mechanism 114, the focus adjustment mechanism 115, and the zoom adjustment mechanism 116 in accordance with the read setting values.

  As described above, it is possible to set an optimal setting value for the conference room 1.

JP 2005-328341 A

  However, this method requires that the identification information 1 is selected by the operation of the operation panel 111 or the remote controller 112 by the user when resetting in the conference room 1.

In order to make it easy to identify the conference room 1 at the initial setting, it is desirable to enter the name of the conference room etc. for the identification information 1, but this operation is complicated. However, it is possible that the identification date 1 may be set to a date of use, a number, or the like, but the conference room 1 is not likely to be easily identified at the time of resetting.

  Therefore, the present invention can more easily associate the setting value according to the usage location with the installation location, and can easily reset the setting value depending on the usage location when used in the same location. Provide a projector.

Having video input means,
Optical modulation means for modulating an electrical signal applied to the video input means into an optical signal;
In the video projection device projected based on the video signal input means,
Wireless communication means, video adjustment information storage means for storing a plurality of video adjustment information,
Video adjustment means for adjusting the projection video based on the video adjustment information selected and acquired from the video adjustment information storage means;
The communication terminal information acquired by the wireless communication unit is associated with the video adjustment information and stored in the video adjustment storage unit.

  According to the present invention, it is possible to provide a video projection apparatus that can store a projector installation location and video adjustment information in association with each other.

Configuration of projector in embodiments 1 and 2 of the present invention Example of wireless communication format Example of wireless communication format Example of projector installation in Embodiment 1 of the present invention Example of projector installation in Embodiment 1 of the present invention Identification information in Embodiment 1 of the present invention Flow at the time of resetting when installing the projector in Embodiment 1 of the present invention Example of projector installation in Embodiment 2 of the present invention Example of projector installation in Embodiment 2 of the present invention Identification information in Embodiment 2 of the present invention Example of projector and PC network connection Conventional projector and configuration Example of projector installation in a conventional projector Example of projector installation in a conventional projector

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

[Example 1]
The projector of the present invention is shown in FIG.

  The video input circuit 102 determines the signal type of the input signal input to the input terminal 101. If the input signal is an analog signal, A / D conversion is performed and subsequent processing is performed.

  In the video processing circuit 103, resolution conversion is performed so that the resolution of the input signal matches the display panel 106, and keystone correction is performed.

  The output of the video processing circuit 103 is separated into signals for each color by the display circuit 105, and the display panel 106 is driven so that the output luminance characteristic becomes a target characteristic with respect to the input gradation.

  Incident light from the lamp 107 to the display panel 106 is driven by the display circuit 105 to have a reflectance corresponding to the input signal (in the case of a transmissive projector), and is projected onto the screen through the projection lens group 108. .

  The focus adjustment mechanism 115 drives the projection lens group 108 by the controller 104 so that the projection lens group 108 is positioned according to the focus setting value by the controller 104 for the in-focus distance that varies according to the distance between the projector 1 and the screen 7. It is controlled by that.

  Similarly, the zoom adjustment mechanism 115 is controlled so that the projection lens group 108 is positioned according to the zoom setting value.

  Further, the lens shift adjustment mechanism 116 is controlled so that the projection lens group 108 is positioned according to the lens shift setting value.

  The video processing circuit 103 performs processing so that an image is displayed or can be seen in the same manner as when there is no ambient light according to the set value of the ambient light.

  Here, a value that clarifies what light the ambient light is is set as the ambient light setting value, and the video processing circuit 103 reads the value, and the image is the same as when there is no ambient light, or Processed video processing so that it can be seen.

  Alternatively, the same value may be obtained even if the value related to the video processing that becomes or becomes visible in the same state as when there is no environmental light is set as the setting value of the environmental light, and the video processing circuit 103 performs processing according to the value.

  At the same time, the video processing circuit 103 and the display circuit 105 are driven so as to correct the trapezoidal distortion of the projected image on the screen 7 according to the set values such as keystone and wall color, and to correct the influence of the wall color.

  As described above, settings according to the place of use are performed for focus, zoom, keystone, lens shift, wall color, ambient light, and the like.

  On the other hand, the wireless communication unit 109 performs transmission / reception and encoding / decoding of radio waves from the outside, and based on the information, control from the outside, reception of information, or access to an external network is performed.

  A general-purpose network device has unique identification information for individually identifying each device.

  For a general Ethernet (registered trademark) device, the MAC address corresponds to this.

  A general format used for wireless communication is shown in FIG.

  When communication is performed, information on a wireless transmission destination address indicating a terminal that wants to perform wireless communication is added to the header.

  As this information, a MAC address is generally used and is also called a BSS-ID.

  Wireless communication terminals such as projectors and wireless access points process only the data that the wireless transmission destination address obtained by demodulating and decoding each received radio wave matches with its own MAC address as data that it should receive Is done.

  When transmitting data from a wireless communication terminal to an external network through a wireless access point, the wireless communication terminal adds a data transmission destination address to the header as shown in FIG. To transmit by radio wave.

  A wireless access point that has received data with its own MAC address as the wireless destination address encodes the wireless communication source address and data destination address to be decoded with headers and data suitable for the external network. To send data to the external network.

  When a wireless access point receives data specified as a data transmission destination from an external network with a MAC address different from its own, it adds its own MAC address as the wireless transmission source address and is a header suitable for wireless communication. The data is encoded, modulated, and transmitted.

  Furthermore, a wireless communication terminal that has received a radio wave whose wireless destination address matches its own MAC address is processed as data sent to itself from the destination address included in the header.

  Before these communications are performed, the wireless access point periodically transmits its own MAC address as the wireless source address for the purpose of notifying that its own MAC address is an address that allows wireless communication. Yes.

  A wireless communication terminal such as a projector can know the MAC address within the radio wave reachable range of the wireless access point by decoding the radio wave.

  As shown in FIG. 4, a setting procedure when the projector 1 performs projection in a certain conference room 1 is shown below.

  In this conference room 1, it is assumed that the optimum focus position is preferably set to focus 1 either automatically or manually.

  Zoom 1, Keystone 1, Lens Shift 1, Wall Color 1, and Ambient Light 1 are set in the same manner.

  At this time, the radio wave arriving at the wireless communication unit 109 is decoded and the MAC address of the wireless access point 2 is obtained.

  The projector 1 can acquire the MAC address 1 of the wireless access point 21 as a wireless access point that can communicate with the wireless communication unit 109. This is identification information 1.

  When the user operates the operation panel 111 or the remote controller 112, the zoom 1, the keystone 1, the lens shift 1, the wall color 1, and the ambient light 1 are added with the identification information 1 of the conference room 1, Is stored in the storage unit 110 as the optimum setting value.

  This control may be performed automatically when zoom, keystone, lens shift, wall color, ambient light, etc. are set, or may be at the end of the power supply.

  A case where the use of the projector 1 in the conference room 1 is finished and projection is performed in another conference room 2 is shown in the figure.

  Assume that the optimum setting values, focus 2, zoom 2, keystone 2, lens shift 2, wall color 2, and ambient light 2 in conference room 2 are set by the same procedure as in the case of projection in conference room 1.

  At this time, the radio wave arriving at the wireless communication unit 109 is decoded and the MAC address of the wireless access point 2 is obtained.

  The projector 1 can acquire the MAC address 2 of the wireless access point 22 as a wireless access point that can communicate with the wireless communication unit 109. This is identification information 2.

  Furthermore, when the user operates the operation panel 111 or the remote controller 112, the focus 2, zoom 2, keystone 2, lens shift 2, wall color 2, and ambient light 2 are added with the identification information 2 of the conference room 2, and the conference The optimum setting value in the chamber 2 is stored in the storage unit 110.

  As described above, as shown in FIG. 6, the identification information for each use place and the set value corresponding to the use place are stored in association with each other.

  When using again in conference room 1 after use in conference room 2, the setting values for each item are the optimum values in conference room 1, focus 1, zoom 1, keystone 1, lens shift 1, wall color 1, It is not ambient light 1.

  FIG. 7 shows a flow for performing setting depending on the place of use in the present invention.

  The radio wave arriving at the radio communication unit 109 is decoded to obtain the MAC address of the radio access point at which the radio wave has reached (S203).

  The MAC address of the installed wireless access point 21 is unique for each individual and is the same MAC address 1 as the previous setting and matches the identification information 1 unless there is any change such as device replacement .

  Then, the projector 1 reads setting values such as focus 1, zoom 1, keystone 1, lens shift 1, wall color 1, and ambient light 1 corresponding to the identification information 1 from the storage unit 110.

  The projector 1 drives the video processing circuit 103, the display circuit 105, the lens shift mechanism 114, the focus adjustment mechanism 115, and the zoom adjustment mechanism 116 in accordance with the read setting values (S204).

  This control may be performed automatically at the time of activation or may be executed by the operation of the operation panel 111 or the remote controller 112 by the user.

  As described above, it is possible to easily reset the setting information depending on the use place without the user having to select the identification information of the use place.

  The case where the setting values of focus, zoom, keystone, lens shift, wall color, and ambient light are associated with the identification information of the usage location is shown. The effects of the embodiment can be obtained.

  Further, the user may be able to select setting information depending on the place of use, which is associated with identification information and controlled.

  The identification information may not be a MAC address as long as it is identification information of a wireless access point obtained through wireless communication, such as an IP address.

  If a DNS name or the like is used as identification information and the identification information is displayed on the UI, it is easy to determine whether the selected identification information is correct.

[Example 2]
In general, the radio wave intensity in wireless communication is greatly attenuated as the distance increases and depending on the presence / absence of a wall and the material.

  In general, when a wireless communication terminal obtains a MAC address by demodulating and decoding a radio wave, it can assume the radio wave intensity of a wireless access point having an arbitrary MAC address.

  The projector of the present invention is shown in FIG.

  In the projector of the present invention, as shown in FIGS. 8 and 9, the projector 1 is projected in a certain conference room 1, conference room 2, conference room 3, and conference room 4.

  Here, the wireless access point 21 is installed in the conference room 1, and the wireless access point 23 is installed in the wireless access point in the conference room 3.

  In the projector 1 of the present invention, as shown in FIG. 8, a setting procedure for projecting the projector 1 in a certain conference room 1 is shown below.

  In the conference room 1, it is assumed that the optimum focus position is preferably set to the focus 1 by automatic operation or manual operation by the user.

  Zoom 1, Keystone 1, Lens Shift 1, Wall Color 1, and Ambient Light 1 are set in the same manner.

  Here, when radio waves reach the wireless communication unit 109 from a plurality of wireless access points, a plurality of MAC addresses can be acquired.

  At this time, the radio wave reaching the radio communication unit 109 is demodulated and decoded, and the MAC address of the radio access point reaching the radio communication unit 109 is obtained.

  For example, it is assumed that the radio field strength of MAC address A is 5, the radio field strength of MAC address B is 1, and radio waves from other MAC addresses are not observed.

  Here, in order to use the information for identifying the conference room 1, the two MAC addresses and the radio wave intensity from each of them are used as the identification information 1.

  When the user operates the operation panel 111 or the remote controller 112, the zoom 1, the keystone 1, the lens shift 1, the wall color 1, and the ambient light 1 are added with the identification information 1 of the conference room 1, Is stored in the storage unit 110 as the optimum setting value.

  This control may be performed automatically when setting zoom, keystone, lens shift, wall color, ambient light, or the like, or may be performed at the end of power.

  A case where the use of the projector 1 in the conference room 1 is finished and projection is performed in another conference room 3 as shown in FIG. 9 is shown.

  Assume that the optimum setting values, focus 2, zoom 2, keystone 2, lens shift 2, wall color 2, and ambient light 2 in conference room 2 are set by the same procedure as in the case of projection in conference room 1.

  In addition, the MAC addresses of all wireless access points that have reached the wireless communication unit 109 and the radio field intensity from each are measured, the radio field intensity of MAC address A is 3, the radio field intensity of MAC address B is 3, and the other MAC Suppose no radio waves from the address were observed.

  Here, since the two MAC addresses and the radio wave intensity from each of them are used as information for identifying this conference room 2, this list is referred to as identification information 2.

  As described above, as shown in FIG. 10, the identification information for each use place and the setting value corresponding to the use place are stored in association with each other.

  When using again in conference room 1 after use outside conference room 1, the setting values for each item are the optimum values in conference room 1, focus 1, zoom 1, keystone 1, lens shift 1, wall color 1, It is not ambient light 1.

  Therefore, the radio wave reaching the radio communication unit 109 is decoded to obtain the MAC address of the radio access point where the radio wave has reached (S203).

  The wireless access point is unique for each individual, and the MAC address of the wireless access point where the radio wave reaches the wireless communication unit 109 is the same as the initial setting unless there is any change such as device replacement. And matches the MAC address of identification information 1.

  At the same time, the MAC addresses of all the wireless access points reaching the wireless communication unit 109 and the radio field intensity from each are measured.

  Then, the storage unit 110 is searched for identification information in which the MAC addresses of all the wireless access points coincide with the information of the radio field intensity from each.

  The radio wave intensity from each wireless access point is uniquely determined by the positional relationship with the wireless communication unit 109 if errors due to the effects of temperature, humidity, and radio wave interference are allowed. The information on the radio field intensity matches the identification information 1.

  Then, the projector 1 reads setting values such as focus 1, zoom 1, keystone 1, lens shift 1, wall color 1, and ambient light 1 corresponding to the identification information 1 from the storage unit 110.

  The projector 1 drives the video processing circuit 103, the display circuit 105, the lens shift mechanism 114, the focus adjustment mechanism 115, and the zoom adjustment mechanism 116 in accordance with the read setting values.

  This control may be performed automatically at the time of activation or may be executed by the operation of the operation panel 111 or the remote controller 112 by the user.

  As described above, it is possible to easily reset the setting information depending on the use place without the user having to select the identification information of the use place.

  The case where the setting values of focus, zoom, keystone, lens shift, wall color, and ambient light are associated with the identification information of the usage location is shown. The effects of the embodiment can be obtained.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist.

101 Input terminal 102 Video input circuit 103 Video processing circuit

Claims (10)

Having video input means,
Optical modulation means for modulating an electrical signal applied to the video input means into an optical signal;
In the video projection device projected based on the video signal input means,
Wireless communication means, video adjustment information storage means for storing a plurality of video adjustment information,
Video adjustment means for adjusting the projection video based on the video adjustment information selected and acquired from the video adjustment information storage means;
Communication information acquired by the wireless communication means;
Match the video adjustment information,
A video projection apparatus for storing the video adjustment information in a video adjustment storage means. 2. The video projection device according to claim 1, wherein the communication information is terminal identification information capable of communication. In the video projection device according to claim 1 or claim 2, the communication information is:
An image projection apparatus comprising one or more pieces of terminal identification information and information on radio wave intensity reached from each communication terminal. In the video projection device according to any one of claims 1 to 3, the video adjustment information acquired from the video adjustment storage unit is
A video projection device to be selected based on the communication information. 5. The video projection device according to claim 1, wherein the communication information is a MAC address. 6. The video projection apparatus according to any one of claims 1 to 5, wherein the video adjustment information is:
A video projection apparatus comprising external light correction information for correcting a color of a projection area having external light other than projection light from the video projection apparatus so that the color approaches a state without external light. The video projection device according to any one of claims 1 to 5, wherein the video adjustment information performs color correction so that the same color as the white projection area is obtained.
An image projection apparatus including wall color correction information. 6. The video projection apparatus according to claim 1, wherein the video adjustment information includes trapezoidal correction information. 6. The video projection apparatus according to claim 1, wherein the video adjustment information includes focal length adjustment information. 6. The video projection apparatus according to claim 1, wherein the video adjustment information includes video area adjustment information.