JP2016163294A - Display device and display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow setting for performing radio communication to be easily done.SOLUTION: A user connects a digital camera 20 with which the user has photographed a two-dimensional code pasted on an access point 30 to a projector 10. The projector 10 obtains image data representing the image of the two-dimensional code from the digital camera 20. The projector 10 analyzes the obtained image data, and obtains setting information to connect to the access point 30 to perform radio communication from the image of the two-dimensional code included in the image represented by the image data. The projector 10 uses the obtained setting information to perform setting for radio communication and connects to the access point 30.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a technique for setting wireless communication.

  As an invention for easily setting wireless communication, there is an image display system disclosed in Patent Document 1, for example. In this image display system, the projector projects the connection information for wireless LAN connection to the projector as a two-dimensional code. The information terminal images the projected two-dimensional code in accordance with a user operation. The information terminal analyzes the two-dimensional code included in the captured image, recognizes the connection information, and uses the recognized connection information to make settings for performing a wireless LAN connection.

JP 2008-77380 A

Some projectors are small and easy to carry. Such a small projector is used, for example, for displaying materials used in a conference by bringing it into a conference room. If the projector brought into the conference room is connected to the access point of the wireless LAN (Local Area Network) installed in the conference room, the computer and the projector are connected via the wireless LAN without using a video cable. The computer screen can be projected by a projector.
However, in order to connect the projector to the access point, it is necessary to set the projector to connect to the access point. When performing this setting, the user needs to input various information to the projector. However, in a projector that does not have a keyboard, for example, the information must be input using a software keyboard, and it takes time to input the information. It was.

  The present invention provides a technique that enables easy setting for wireless communication.

The present invention relates to a communication unit that performs wireless communication, an image acquisition unit that acquires an image, and an information acquisition unit that acquires setting information related to setting of wireless communication performed by the communication unit from an image acquired by the image acquisition unit. And a setting unit configured to set wireless communication performed by the communication unit using the setting information acquired by the information acquisition unit, and a display unit that displays an image acquired by the communication unit through wireless communication. To do.
According to this display device, setting for performing wireless communication can be easily performed.

In the present invention, the image acquisition unit may be configured to specify an image including setting information from a plurality of images stored in a connected external device and acquire the specified image.
According to this configuration, since an image including setting information is automatically specified from a plurality of images, settings for performing wireless communication can be easily performed compared to a case where the user specifies an image. it can.

In the present invention, the setting information may be represented by a two-dimensional code in the image.
According to this configuration, it is possible to set a lot of information regarding the setting of wireless communication.

Moreover, in this invention, it has an imaging part which outputs the image | photographed image, The said image acquisition part is good also as a structure which acquires the image which the said imaging part output.
According to this configuration, it is possible to perform wireless communication settings without acquiring an image from a connected external device.

Further, the present invention provides an image acquisition step of acquiring an image, an information acquisition step of acquiring setting information related to setting of wireless communication performed by a communication unit from the image acquired in the image acquisition step, and the information acquisition step. Provided is a display method comprising a setting step for setting wireless communication performed by the communication unit using the acquired setting information, and a display step for displaying an image acquired by the communication unit through wireless communication.
According to this method, setting for performing wireless communication can be easily performed.

The figure which showed the apparatus which concerns on one Embodiment of this invention. FIG. 3 is a diagram illustrating a hardware configuration of the projector. FIG. 3 is a functional block diagram of functions realized in a control unit 110. The flowchart which showed the flow of the process which the control part 110 performs. The figure which showed an example of the menu screen which the projector 10 projects. The figure which showed an example of the menu screen which the projector 10 projects. The figure which showed an example of the screen which the projector 10 projects.

[Embodiment]
(Configuration of the embodiment)
FIG. 1 is a diagram showing an apparatus according to an embodiment of the present invention. The LAN 2 is a computer network including wireless and wired communication lines, and is connected to a personal computer, a server device, etc. (not shown).
The access point 30 is an access point that performs communication in accordance with a wireless LAN communication standard (for example, IEEE 802.11). The access point 30 is installed in a conference room, for example, and is connected to the LAN 2. A two-dimensional code including setting information for connecting to the access point 30 is attached to the housing of the access point 30. The two-dimensional code includes information such as an SSID (Service Set IDentifier), an encryption key, and an encryption method. In the present embodiment, the two-dimensional code is a QR code (registered trademark), but is not limited to the QR code, and may be another matrix type code or a stack type code.
The digital camera 20 is a camera that records an image captured by an image sensor as digital data. The digital camera 20 has a nonvolatile memory, and stores image data representing a captured image in the nonvolatile memory. The digital camera 20 has a function of performing communication in accordance with a USB (Universal Serial Bus) communication standard, and outputs image data to another device via a USB cable.
The projector 10, which is an example of a display device, is connected to an external device that supplies a video signal, and projects an image indicated by the video signal supplied from the external device onto a screen or a wall surface. The projector 10 also has a function of performing communication according to the wireless LAN communication standard and a function of performing communication according to the USB communication standard.

  FIG. 2 is a diagram illustrating a hardware configuration of the projector 10. The projector 10 includes a control unit 110, a storage unit 120, an operation unit 130, and a projection unit 140. The projector 10 includes a video processing unit 150, a video interface 160, and a communication unit 180. The control unit 110 is a microcomputer including a CPU (Central Processing Unit), a ROM (Read Only Memory), and a RAM (Random Access Memory). When the CPU executes a program stored in the ROM, the control unit 110 controls each unit to realize various functions such as a function for projecting an image and a communication function. The storage unit 120 includes a nonvolatile memory, and stores setting values related to the image quality of the projected image and information related to various function settings.

  The video interface 160 has a connector such as RCA, D-Sub, or HDMI (registered trademark), and supplies a video signal supplied from an external device to the connector to the video processing unit 150. The communication unit 180 includes an interface that performs communication according to a wireless LAN communication standard, an interface that performs wired LAN communication, an interface that performs communication according to a USB communication standard, and the like.

  The video processing unit 150 acquires the video signal supplied from the video interface 160. In addition, the video processing unit 150 acquires an on-screen image signal such as a menu screen for performing various settings of the projector 10 from the control unit 110. The video processing unit 150 has various image processing functions, performs image processing on the video signal supplied from the video interface 160, and adjusts the image quality of the projected video. In addition, when an on-screen image signal is supplied from the control unit 110, the video processing unit 150 supplies a video signal on which the on-screen image signal is superimposed to the projection unit 140.

  The operation unit 130 includes a plurality of buttons for operating the projector 10. The operation unit 130 includes, for example, up / down / left / right cursor buttons and a determination button used when selecting an item on a menu screen. The control unit 110 controls each unit according to the operated button, thereby adjusting the projected image, setting various functions of the projector 10, and the like. The operation unit 130 also includes a light receiving unit (not shown) that receives an infrared light signal from a remote controller (not shown). The operation unit 130 converts a signal transmitted from the remote controller into an electric signal and supplies the electric signal to the control unit 110, and the control unit 110 controls each unit according to the supplied signal.

  The projection unit 140 that projects an image includes a light source 141, a light valve 142, a drive circuit 144, and a projection optical system 143. The light source 141 is a lamp that emits light, and the light emitted from the light source 141 is split into red, green, and blue light by a plurality of dichroic mirrors and mirrors (not shown), and each of the split red, green, and blue is split. Is guided to the light valve 142. The light source 141 may be a light emitting diode or a semiconductor laser device that emits laser light instead of a lamp.

  The drive circuit 144 acquires the video signal supplied from the video processing unit 150. The video signal supplied to the drive circuit 144 includes gradation data representing the gradation of the red component in the projected image, gradation data representing the gradation of the green component in the projected image, and the blue component in the projected image. Gradation data representing the gradations. The drive circuit 144 extracts gradation data of each color of red, green, and blue, and drives the light valve 142 based on the extracted gradation data of each color.

  The light valve 142 includes the above-described liquid crystal light valve on which red light is incident, the above-described liquid crystal light valve on which green light is incident, and the above-described liquid crystal light valve on which blue light is incident. The liquid crystal light valve is a transmissive liquid crystal panel and includes pixels arranged in a matrix with a plurality of rows and a plurality of columns. A liquid crystal light valve that receives red light is driven based on red gradation data, and a liquid crystal light valve that receives green light is driven based on green gradation data, and a liquid crystal light that receives blue light. The valve is driven based on the blue gradation data. In each liquid crystal light valve, each pixel is controlled by the drive circuit 144, and the transmittance of the pixel changes. By controlling the transmittance of the pixels, the light of each color transmitted through the liquid crystal light valve becomes an image corresponding to each gradation data. The red, green, and blue light images transmitted through the liquid crystal light valve are combined by a dichroic prism (not shown) and are incident on the projection optical system 143. The projection optical system 143 is an optical system that magnifies an incident image, and projects the incident image by enlarging it with a lens or a mirror. Note that a reflective liquid crystal panel, a digital mirror device (Digital Mirror Device, DMD), or the like may be used instead of the above-described transmissive liquid crystal light valve.

FIG. 3 is a functional block diagram showing the functions realized by the control unit 110 executing a program and the functions realized by the control unit 110.
The image acquisition unit 111 acquires image data from a device connected to a USB interface included in the communication unit 180. The information acquisition unit 112 analyzes the image data acquired by the image acquisition unit 111, and specifies a two-dimensional code portion in the image represented by the image data. When the information acquisition unit 112 identifies the portion of the two-dimensional code in the image, the information acquisition unit 112 analyzes the two-dimensional code, and acquires setting information related to settings for performing wireless LAN communication from the two-dimensional code. The setting unit 113 performs wireless communication settings such as an SSID, an encryption key, and an encryption method according to the setting information acquired by the information acquisition unit 112.

(Operation example of embodiment)
Next, an operation example of this embodiment will be described with reference to the flowchart shown in FIG. When connecting the projector 10 to the access point 30, the user first photographs the two-dimensional code attached to the access point 30 with the digital camera 20. When the user captures the two-dimensional code, the image data of the captured two-dimensional code is stored in the memory of the digital camera. When the user finishes photographing the two-dimensional code, the user connects the digital camera 20 to the communication unit 180 with a USB cable.

  Next, when the user performs an operation for displaying the menu screen on the operation unit 130, the projector 10 projects a menu screen for performing various settings. The menu screen to be projected is a tab menu, and when the user selects the “network” tab with the cursor button of the operation unit 130, the projector 10 changes the screen to be projected to the screen shown in FIG. The “Network” tab is a menu for displaying various information related to communication and various settings. When the user presses the enter button on the operation unit 130 while the menu screen shown in FIG. 5 is projected. The items displayed on the right side of the tab can be selected. When the user selects an item “go to network setting screen” with the cursor button and presses the enter button, the projector 10 projects a menu screen for performing various settings related to communication.

  The menu screen for performing various settings related to communication is also a tab menu. When the user selects the “wireless LAN” tab with the cursor button on the projected menu screen, the projector 10 displays the projected screen. The screen shown in FIG. The “wireless LAN” tab is a menu for performing various settings related to wireless LAN communication. When the menu button shown in FIG. 6 is projected and the user presses the enter button, the right side of the tab is displayed. The displayed item can be selected. When the user selects the “Easy setting” item with the cursor button and presses the enter button, the control unit 110 executes the processing shown in FIG.

  First, the control unit 110 determines whether another device is connected to the USB interface included in the communication unit 180 (step SA1). If no other device is connected to the USB interface (NO in step SA1), the control unit 110 projects a message that prompts the user to connect the other device to the USB interface (step SA2). When the digital camera 20 is connected to the USB interface (YES in step SA1), the control unit 110 communicates with the digital camera 20 and thumbnail images of image data stored in the non-volatile memory of the digital camera 20. Is projected (step SA3).

  FIG. 7 is a diagram illustrating an example of a projected thumbnail image. When the thumbnail image is projected, the user operates one of the cursor buttons on the top, bottom, left, and right of the operation unit 130 to perform an operation of selecting an image on which the two-dimensional code is reflected. When the cursor button is pressed (YES in step SA4), control unit 110 selects one image from the thumbnail images according to the pressed button (step SA5). When the determination button is pressed when one of the thumbnail images is selected (YES in step SA6), the control unit 110 (image acquisition unit 111) transmits the image data of the selected image from the digital camera 20. The acquired image data is stored in the storage unit 120 (step SA7).

  When acquiring the image data, the control unit 110 (information acquisition unit 112) analyzes the acquired image data and detects a portion of the two-dimensional code in the image represented by the image data (step SA8). When there is no two-dimensional code portion in the image represented by the acquired image data (NO in step SA9), control unit 110 projects a message notifying that the setting has failed (step SA12), and performs wireless LAN communication. The setting process is terminated.

  When there is a two-dimensional code portion in the image represented by the acquired image data (YES in step SA9), control unit 110 (information acquisition unit 112) analyzes the two-dimensional code and connects to access point 30. Is included in the two-dimensional code (step SA10). When the information for connecting to the access point 30 is not included in the two-dimensional code (NO in step SA10), the control unit 110 projects a message notifying that the setting has failed (step SA12), and the wireless LAN The process for setting the communication of is terminated.

  When information for connecting to access point 30 is included in the two-dimensional code (YES in step SA10), control unit 110 (information acquisition unit 112) uses the two-dimensional code for SSID, encryption key, and communication. Information for connecting to the access point 30, such as an encryption method, is extracted (step SA11). When the control unit 110 (setting unit 113) extracts the information for connecting to the access point 30, the control unit 110 (setting unit 113) uses the extracted information to perform setting for connecting to the access point 30 in the infrastructure mode (step SA13). ).

When the setting for connecting to the access point 30 is completed, the control unit 110 controls the communication unit 180 to connect to the access point 30 (step SA14). Next, the control unit 110 projects a message notifying that the setting has been completed (step SA15), and ends the processing for setting the communication.
When the projector 10 is connected to the access point 30, the projector 10 can communicate via the LAN 2. When the projector 10 can perform wireless LAN communication, the user can operate the personal computer to connect the personal computer and the projector 10 and project the screen of the personal computer with the projector 10.

  As described above, according to the present embodiment, setting for connecting to an access point can be easily performed by connecting devices and operating a menu screen without using a software keyboard.

[Modification]
As mentioned above, although embodiment of this invention was described, this invention is not limited to embodiment mentioned above, It can implement with another various form. For example, the present invention may be implemented by modifying the above-described embodiment as follows. In addition, you may implement each embodiment mentioned above and the following modifications, combining one or more suitably.

  The device connected to the USB interface included in the communication unit 180 is not limited to the digital camera 20. For example, a smartphone, a feature phone, or a tablet that includes an image sensor and has a function of storing image data of captured images. Other devices such as a terminal may be used. Alternatively, the image data stored in the digital camera 20 may be copied to a USB memory, and the USB memory with the image data copied may be connected to a USB interface included in the communication unit 180. Thereby, it is possible to acquire image data of a two-dimensional code image from a device other than the digital camera 20 and perform settings related to wireless LAN communication.

  In the embodiment described above, image data is transmitted from the digital camera 20 to the projector 10 via the USB cable. However, the image data is transmitted from the digital camera 20 to the projector 10 by wireless communication such as infrared communication or Bluetooth (registered trademark). You may make it send to.

  In the above-described embodiment, the device connected to the access point 30 is the projector 10 that projects an image, but may be a direct-view display device such as a liquid crystal television or a liquid crystal monitor.

In the above-described embodiment, the user selects an image of a two-dimensional code from thumbnail images, but is not limited to the configuration selected by the user.
For example, the control unit 110 may analyze image data stored in the digital camera 20 and detect and acquire two-dimensional code image data including information for connecting to the access point 30. In addition, when there are a plurality of two-dimensional code image data including information for connecting to the access point 30, the control unit 110 may acquire the image data with the latest generation date and time of the image data.

In the present invention, the projector 10 may be provided with an image sensor, and a two-dimensional code attached to the access point 30 may be photographed with the image sensor provided in the projector 10. Alternatively, a camera including an image sensor may be connected to the communication unit 180 with a USB cable, and a two-dimensional code may be captured with the camera connected with the USB cable. The control unit 110 analyzes the image of the two-dimensional code captured by the image sensor, extracts information for connecting to the access point 30 from the two-dimensional code, and uses the extracted information to the access point 30. You may make it perform the setting for connecting in infrastructure mode.
Further, when a two-dimensional code is photographed with an imaging device provided in the projector 10, for example, the two-dimensional code is photographed with a tablet terminal, and the photographed two-dimensional code is enlarged and displayed on the tablet terminal, and displayed on the tablet terminal. A two-dimensional code that has been recorded may be photographed.

DESCRIPTION OF SYMBOLS 2 ... LAN, 10 ... Projector, 20 ... Digital camera, 30 ... Access point, 110 ... Control part, 111 ... Image acquisition part, 112 ... Information acquisition part, 113 ... Setting part, 120 ... Storage part, 130 ... Operation part, DESCRIPTION OF SYMBOLS 140 ... Projection part, 141 ... Light source, 142 ... Light valve, 143 ... Projection optical system, 144 ... Drive circuit, 150 ... Video processing part, 160 ... Video interface, 180 ... Communication part

Claims (5)

A communication unit for performing wireless communication;
An image acquisition unit for acquiring images;
An information acquisition unit that acquires setting information related to settings of wireless communication performed by the communication unit from an image acquired by the image acquisition unit;
With the setting information acquired by the information acquisition unit, a setting unit for setting wireless communication performed by the communication unit;
A display unit configured to display an image acquired by the communication unit through wireless communication. The display device according to claim 1, wherein the image acquisition unit specifies an image including setting information from a plurality of images stored in a connected external device, and acquires the specified image.   The display device according to claim 1, wherein the setting information is represented by a two-dimensional code in the image. It has an imaging unit that outputs the captured image,
The display device according to any one of claims 1 to 3, wherein the image acquisition unit acquires an image output by the imaging unit. An image acquisition step of acquiring an image;
An information acquisition step for acquiring setting information related to setting of wireless communication performed by the communication unit from the image acquired in the image acquisition step;
A setting step for setting wireless communication performed by the communication unit with the setting information acquired in the information acquiring step;
A display step of displaying an image acquired by the communication unit through wireless communication.

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