JP7263986B2 - IMAGE DISPLAY SYSTEM AND METHOD OF CONTROLLING IMAGE DISPLAY SYSTEM - Google Patents

Description

The present invention relates to an image display system and an image display system control method.

As an example of an image supply device that supplies image information to an image display device, Patent Literature 1 describes a set-top box that causes an image display device to display content obtained via the Internet or the like. This set-top box is capable of communication by Bluetooth (registered trademark), and the user can remotely control the set-top box using a remote control that transmits Bluetooth signals.
On the other hand, for remote control of image display devices such as projectors, remote controllers that transmit infrared signals are generally used. Therefore, when an image display device that can be operated by infrared signals is connected to an image supply device that can be operated by Bluetooth signals, it is possible to operate the image display device by using a single remote controller that can handle both infrared signals and Bluetooth signals. desirable.

JP 2015-19238 A

However, if an operation key for transmitting an infrared signal and an operation key for transmitting a Bluetooth signal are arranged on a single remote controller, the number of operation keys increases, and the operability of the remote controller deteriorates. There is a problem. For this reason, operation keys that can be used in both the image supply device and the image display device are combined into one common operation key, and when this operation key is operated, both infrared signals and Bluetooth signals are transmitted. With such a configuration, it is possible to suppress an increase in the number of operation keys. However, with such a configuration, when the common operation key is operated to operate the image display device, the image supply device may perform an unintended operation.

An image display system of the present application includes an image supply device that supplies image information, an image display device that displays an image based on the image information supplied from the image supply device, and the image supply device and the image display device. an image display system comprising: a remote control for remote control, wherein the remote control includes a first operation key, a second operation key, and a third operation key; a second transmission unit for transmitting a second operation signal using a communication method different from that of the first operation signal; and the first transmission unit when the first operation key is operated. transmitting the first operation signal from the unit, transmitting the second operation signal from the second transmission unit when the second operation key is operated, and transmitting the second operation signal from the third operation key; and a remote control control unit configured to transmit the first operation signal from the first transmission unit and to transmit the second operation signal from the second transmission unit when the operation signal is transmitted. The image display device includes a first input/output unit connected to the image supply device, a first reception unit for receiving the first operation signal, and the operation signal received by the first reception unit. a first control unit that performs control according to a first operation signal; and the image supply device includes a second input/output unit connected to the image display device and the second operation signal. and a second control unit that performs control according to the second operation signal received by the second reception unit, the first control unit comprising: When the condition for starting the first operation is satisfied, the control for starting the first operation and the output of the first command to the image supply device are performed, and the first command is output. When a condition for terminating the first operation is later satisfied, control for terminating the first operation and outputting a second command to the image supply device are performed, and the second control is performed. The unit responds to the second operation signal transmitted when the third operation key is operated during the period from when the first command is input until when the second command is input. It is characterized by stopping control.

In the image display system described above, the condition for starting the first operation may be that the first operation signal received by the first receiving unit indicates the start of the first operation. .

In the image display system described above, the condition for ending the first operation may be that the first operation signal received by the first receiving unit indicates the end of the first operation. .

In the image display system described above, the condition for ending the first operation may be that a period of time during which the first operation signal is not received by the first receiving unit reaches a predetermined period of time. .

In the above image display system, the first operation may be display of a menu image for setting the image display device.

In the image display system described above, the first operation may be display of an image including a message indicating the state of the image display device.

In the above image display system, the first operation signal may be an infrared operation signal, and the second operation signal may be a Bluetooth operation signal.

A control method for an image display system according to the present application includes an image supply device that supplies image information, an image display device that displays an image based on the image information supplied from the image supply device, the image supply device and the image. A control method for an image display system comprising a remote controller for remotely operating a display device, wherein the remote controller transmits a first operation signal when a first operation key provided on the remote controller is operated. , when a second operation key provided on the remote controller is operated, the remote controller transmits a second operation signal having a communication method different from that of the first operation signal, and a third operation provided on the remote controller. When a key is operated, the remote controller transmits the first operation signal and the second operation signal, and the image display device receives the first operation signal. , performs control according to the first operation signal, and the image supply device receives the second operation signal, performs control according to the second operation signal, and starts a first operation. When the condition for causing the image display is satisfied, the image display device performs control to start the first operation and outputs a first command to the image supply device, and the image display device performs the first command. After outputting the command No. 1, when a condition for ending the first operation is satisfied, control for ending the first operation and outputting a second command to the image supply device are performed. and the image supply device receives the second command transmitted when the third operation key is operated during the period from when the first command is input until when the second command is input. It is characterized by stopping the control according to the operation signal.

1 is a schematic configuration diagram showing the configuration of an image display system; FIG. FIG. 2 is a block diagram showing a schematic configuration of a projector; FIG. 2 is a block diagram showing a schematic configuration of an image supply device; The figure which shows a home screen. FIG. 2 is a block diagram showing a schematic configuration of a remote controller; The top view which shows the external appearance of a remote control. 4 is a flowchart for explaining the operation of the remote control; 4 is a flow chart showing the operation of the projector when displaying a menu image; The figure which shows a menu image. 4 is a flowchart for explaining the operation of the image supply device; The top view which shows the external appearance of a remote control. 4 is a flow chart showing the operation of the projector when displaying a source selection image; FIG. 4 shows a source selection image; 4 is a flow chart showing the operation of the projector when performing direct source selection; 4 is a flowchart showing the operation of the projector when executing AV mute;

The image display system of this embodiment will be described below with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing the configuration of an image display system 100 of this embodiment.
As shown in FIG. 1, the image display system 100 includes a projector 1 as an image display device, an image supply device 2, and a remote control 3. As shown in FIG.

The projector 1 projects and displays an image based on the image information supplied from the image supply device 2 onto the projection surface Sp. The image supply device 2 is in this embodiment a small set-top box, also called a streaming media player. The image supply device 2 is connected to a network NW such as the Internet (see FIG. 2), receives streaming information of content distributed via the network NW by a content distribution service, and transmits image information included in the streaming information to a projector. 1. Hereinafter, an image based on image information supplied from the image supply device 2 to the projector 1 is also referred to as a "supply image", and among the supply images, an image representing content is also referred to as a "content image".

The image supply device 2 of this embodiment is connected to the projector 1 via a cable C<b>1 for supplying image information to the projector 1 and a cable C<b>2 for receiving power supply from the projector 1 . The power supply to the image supply device 2 may be supplied from a source other than the projector 1, such as a commercial power source.

The remote controller 3 is configured with a plurality of operation keys operated by the user. The remote controller 3 of this embodiment can transmit two operation signals with different communication methods. Specifically, the remote controller 3 can transmit an infrared operation signal and an operation signal conforming to Bluetooth (registered trademark), which is a short-range wireless communication standard. Both image supply devices 2 can be remotely controlled.

FIG. 2 is a block diagram showing a schematic configuration of the projector 1. As shown in FIG.
As shown in FIG. 2, the projector 1 includes a control unit 10 as a first control unit, a storage unit 11, an operation unit 12, an infrared signal reception unit 13 as a first reception unit, and a first It includes an image information input section 14 as an input/output section, an image information processing section 15, and an image projection section 16 as a display section. In addition to the above configuration, the projector 1 includes, for example, a power supply circuit that converts commercial power such as AC 100 V into DC power of a predetermined voltage and supplies it to each unit, an audio information processing unit that processes audio information, an audio information Although an audio output unit such as a speaker for outputting audio based on the audio signal may be included, these components are omitted in FIG. 2 .

The control unit 10 includes one or a plurality of processors, and performs integrated control of the operation of the projector 1 by operating according to control programs stored in the storage unit 11 .

The storage unit 11 includes a RAM (Random Access Memory), which is a volatile memory, and a ROM (Read Only Memory), which is a nonvolatile memory. The RAM is used for temporary storage of various data, etc., and the ROM stores control programs, control data, etc. for controlling the operation of the projector 1 .

The operation unit 12 has a plurality of operation keys for the user to give various instructions to the projector 1 . Operation keys provided in the operation unit 12 include a power key for switching the power on and off, a menu key for displaying a menu image Pm (see FIG. 9) described later, selection of items in the menu image Pm, and the like. and a decision key for confirming a selected item. When the user operates various operation keys of the operation unit 12, the operation unit 12 outputs an operation signal to the control unit 10 according to the user's operation. As will be described later, these operation keys are also provided on the remote controller 3, and remote operation using the remote controller 3 instead of the operation unit 12 is possible.

The infrared signal receiving section 13 is configured by including a light receiving element, a decoder, and the like (not shown). The infrared signal receiving section 13 receives and decodes an infrared operation signal transmitted from the remote controller 3 and transmits it to the control section 10 .

The image information input unit 14 includes a connection terminal, an interface circuit, and the like (not shown), and is connected to the image supply device 2 via the connection terminal. The image information input unit 14 of the present embodiment includes, as a connection terminal, an HDMI terminal conforming to HDMI (registered trademark) (High Definition Multimedia Interface). receive. The image information input unit 14 converts the image information supplied from the image supply device 2 into a format that can be processed by the image information processing unit 15 and outputs the converted image information to the image information processing unit 15 . Further, the image information input unit 14 relays input/output of control information by a function called CEC (Consumer Electronics Control) of HDMI. Therefore, the control section 10 can input/output control information to/from the image supply device 2 via the image information input section 14 .

The image information processing unit 15 performs various processing on the image information input from the image information input unit 14 under the control of the control unit 10, and the processed image information is used to drive the light valve of the image projection unit 16. Output to unit 24 . For example, the image information processing unit 15 performs a process of adjusting image quality such as brightness and contrast, a process of superimposing an OSD (on-screen display) image such as a menu image Pm and various messages on a part or the whole of the supplied image, and the like. Run as needed. The image information processing unit 15 may be configured by one or a plurality of processors or the like, or may be configured by a dedicated processing device such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). good.

The image projection section 16 includes a light source 21, three liquid crystal light valves 22R, 22G, and 22B as light modulation devices, a projection optical system 23, a light valve driving section 24, and the like. The image projection unit 16 modulates the light emitted from the light source 21 with the liquid crystal light valves 22R, 22G, and 22B to form image light, and projects the image light from the projection optical system 23 composed of a projection lens and the like. to display an image on the projection surface Sp.

The light source 21 includes a discharge type light source lamp such as an ultra-high pressure mercury lamp or a metal halide lamp, or a solid light source such as a light emitting diode or a semiconductor laser. Light emitted from the light source 21 is converted into light with a substantially uniform luminance distribution by an integrator optical system (not shown), and separated into light components of the three primary colors of light, red, green, and blue, by a color separation optical system (not shown). After that, they enter the liquid crystal light valves 22R, 22G, and 22B, respectively.

Each of the liquid crystal light valves 22R, 22G, and 22B is composed of a transmissive liquid crystal panel or the like in which liquid crystal is sealed between a pair of transparent substrates. Each liquid crystal panel has a rectangular image forming area 22i made up of a plurality of pixels arranged in a matrix, and a driving voltage can be applied to each pixel of the liquid crystal.

The light valve driving section 24 forms an image in the image forming areas 22i of the liquid crystal light valves 22R, 22G, and 22B. Specifically, the light valve driving section 24 applies a driving voltage corresponding to image information input from the image information processing section 15 to each pixel of the image forming area 22i, and causes each pixel to emit light corresponding to the image information. Set to Transparency. Light emitted from the light source 21 is modulated for each pixel by passing through the image forming regions 22i of the liquid crystal light valves 22R, 22G, and 22B, and image light corresponding to image information is formed for each color light. The formed image light of each color is synthesized for each pixel by a color synthesizing optical system (not shown) to become image light representing a color image. As a result, an image corresponding to the image information input from the image information processing section 15 is displayed on the projection surface Sp.

FIG. 3 is a block diagram showing a schematic configuration of the image supply device 2, and FIG. 4 is a diagram showing a home screen.
As shown in FIG. 3, the image supply device 2 includes a control unit 30 as a second control unit, a storage unit 31, a network communication unit 32, a decoder 33, and an image information unit as a second input/output unit. It has an output section 34 and a Bluetooth communication section 35 as a second receiving section.

The control unit 30 includes one or more processors, and operates according to a control program stored in the storage unit 31 to centrally control the operation of the image supply device 2 . The storage unit 31 includes a RAM and a ROM. The RAM is used for temporary storage of various data, etc., and the ROM stores control programs, control data, etc. for controlling the operation of the image supply device 2 .

The network communication unit 32 is connected to the network NW by wire or wirelessly, and transmits and receives information to and from external devices connected to the same network NW. The network communication unit 32 of this embodiment receives streaming information distributed from a streaming server of a content distribution service, and outputs the received streaming information to the decoder 33 .

The decoder 33 decodes the streaming information input from the network communication unit 32 and converts it into image information in a format that can be used by the projector 1 . The decoder 33 of this embodiment decodes the streaming information to generate HDMI-compliant image information.

The image information output unit 34 has a connection terminal conforming to HDMI in this embodiment, and is connected to the connection terminal of the image information input unit 14 of the projector 1 . The image information output section 34 outputs the image information generated by the decoder 33 to the image information input section 14 of the projector 1 . Further, the image information output unit 34 relays input/output of control information by the above-described HDMI CEC. Therefore, the control unit 30 can input/output control information to/from the projector 1 via the image information output unit 34 .

The Bluetooth communication unit 35 includes a communication device conforming to Bluetooth, and performs wireless communication conforming to Bluetooth using radio waves in the 2.4 GHz band. The Bluetooth communication unit 35 receives and decodes the operation signal of Bluetooth transmitted from the remote control 3 and transmits it to the control unit 30 .

Under the control of the control unit 30 , the image supply device 2 can output image information representing the content and image information representing the home screen Ph (see FIG. 4 ) to the projector 1 . As shown in FIG. 4, the home screen Ph is a screen for selecting content to be displayed, and includes a plurality of icons 71 for switching content distribution services, a plurality of thumbnail images 72 for selecting content, and the like. is a screen containing When the image supply device 2 is started or when the user instructs to display the home screen Ph, the control unit 30 of the image supply device 2 generates image information of the home screen Ph, and outputs the image information from the image information output unit 34 to the projector. Output to 1. As a result, the home screen Ph is projected from the projector 1 onto the projection surface Sp. When the user performs an operation of selecting content on the home screen Ph using the remote controller 3, the image supply device 2 starts supplying image information of the selected content, and the content image is projected onto the projection surface Sp from the projector 1. projected.

FIG. 5 is a block diagram showing a schematic configuration of the remote controller 3, and FIG. 6 is a plan view showing the appearance of the remote controller 3. As shown in FIG.
As shown in FIG. 5, the remote controller 3 includes a control section 40 as a remote control section, an operation section 41, an infrared signal transmission section 42 as a first transmission section, and a Bluetooth communication section as a second transmission section. 43.

The control unit 40 includes one or more processors and memory such as RAM and ROM, and performs integrated control of the operation of the remote controller 3 by operating according to a control program stored in the memory.

The operation unit 41 has a plurality of operation keys operated by the user. As shown in FIG. 6, operation keys included in the operation unit 41 include a power key 51 for switching the power of the projector 1 on and off, a menu key 52 for displaying a menu image Pm on the projector 1, and a content distribution service. selection keys 53a, 53b for selecting
Home key 54 for displaying home screen Ph on projector 1 , menu image Pm
Direction keys 55 used for selecting items above, selecting content on the home screen Ph, etc.
, and an enter key 56 for confirming selected items, contents, and the like.

These plurality of operation keys include a first key group 61 used only for operating the projector 1 , a second key group 62 used only for operating the image supply device 2 , and operation keys for both the projector 1 and the image supply device 2 . are classified into three of the third key group 63 used for A first key group 61 used for operating the projector 1 includes the power key 51 and the menu key 52 described above. The second key group 62 used for operating the image supply device 2 includes the selection keys 53a and 53b, the home key 54, and the like. Further, the third key group 63 used for operating both the projector 1 and the image supply device 2 includes the above-described direction key 55, determination key 56, and the like.

Returning to FIG. 5, the infrared signal transmission unit 42 is configured including an encoder for infrared communication, an infrared light emitting device, and the like. Under the control of the control unit 40, the infrared signal transmission unit 42 modulates an operation signal corresponding to an input operation to the operation unit 41 using an encoder, and transmits the operation signal to the projector 1 as an infrared operation signal using an infrared light emitting device. The infrared operation signal corresponds to the first operation signal.

The Bluetooth communication unit 43 includes a Bluetooth-compliant communication device, and performs Bluetooth-compliant wireless communication with the image supply device 2 . Specifically, under the control of the control unit 40 , the Bluetooth communication unit 43 encodes an operation signal corresponding to an input operation to the operation unit 41 and transmits the operation signal to the image supply device 2 as a Bluetooth operation signal. The Bluetooth operation signal corresponds to the second operation signal.

The control unit 40 of the remote controller 3 performs different controls according to the operation keys operated on the operation unit 41 . Specifically, when an operation key included in the first key group 61 of the operation unit 41 is operated, the control unit 40 causes the infrared signal transmission unit 42 to transmit an infrared operation signal to the projector 1 . On the other hand, when an operation key included in the second key group 62 is operated, the control section 40 causes the Bluetooth communication section 43 to transmit a Bluetooth operation signal to the image supply device 2 . When an operation key included in the third key group 63 is operated, the control unit 40 causes the infrared signal transmission unit 42 to transmit an infrared operation signal, and the Bluetooth communication unit 43 to transmit a Bluetooth operation signal. send. That is, when an operation key included in the third key group 63 is operated, an operation signal is transmitted to both the projector 1 and the image supply device 2 .

Next, the operation and control method of the image display system 100 will be described.
FIG. 7 is a flow chart for explaining the operation of the remote control 3. FIG. When the user operates any operation key of the operation unit 41 of the remote controller 3, the control unit 40 of the remote controller 3 operates according to the flow shown in FIG. It is assumed that a wireless connection has been established between the remote controller 3 and the image supply device 2 for communication by Bluetooth.

As shown in FIG. 7 , in step S<b>101 , control unit 40 determines whether or not the operated key is included in first key group 61 . If the operation key is included in the first key group 61, the control unit 40 shifts the process to step S102, and if the operation key is not the first key group 61, shifts the process to step S103.

When an operation key included in the first key group 61 is operated and the process proceeds to step S102, the control unit 40 controls the infrared signal transmission unit 42 to transmit infrared rays corresponding to the operated operation key. Send an operation signal and end the flow.

On the other hand, when an operation key included in the second key group 62 or the third key group 63 is operated and the process proceeds to step S103, the control unit 40 controls the Bluetooth communication unit 43 to to transmit a Bluetooth operation signal corresponding to .

In subsequent step S<b>104 , control unit 40 determines whether or not the operated key is included in second key group 62 . If the operated operation key is an operation key included in the second key group 62, the control unit 40 ends the flow. On the other hand, if the operated operation key is not included in the second key group 62, that is, if it is an operation key included in the third key group 63, the control unit 40 shifts the process to step S102. , controls the infrared signal transmission unit 42 to transmit an infrared operation signal corresponding to the operated operation key, and the flow ends.

Thus, when the operated operation key is included in the first key group 61, the control unit 40 transmits only the infrared operation signal, and the operated operation key is included in the second key group 62. In this case, only Bluetooth operation signals are transmitted. Then, when the operated operation key is included in the third key group 63, the control unit 40 transmits both the infrared operation signal and the Bluetooth operation signal.

Here, since the direction key 55 and the enter key 56 of the remote controller 3 are included in the third key group 63, when these operation keys are operated, an operation signal is transmitted to both the projector 1 and the image supply device 2. be. For example, when the direction key 55 of the remote controller 3 is operated, the projector 1 selects an item on the menu image Pm based on the transmitted operation signal if the menu image Pm is being displayed. On the other hand, if the home screen Ph is being displayed, the image supply device 2 selects content or the like based on the operation signal transmitted in response to the operation of the direction key 55 . In the image display system 100 of the present embodiment, when the menu image Pm is displayed, in order to suppress unintentional switching of contents when selecting an item or the like in the menu image Pm, Control is performed so that part of the operation signal sent to the image supply device 2 is invalidated.

FIG. 8 is a flowchart showing the operation of the projector 1 when displaying the menu image Pm, and FIG. 9 is a diagram showing the menu image Pm. When the user operates the menu key 52 of the remote controller 3, the remote controller 3 transmits an operation signal indicating the start of displaying the menu image Pm. Then, when the infrared signal receiver 13 of the projector 1 receives this operation signal, the controller 10 of the projector 1 operates according to the flow shown in FIG.

As shown in FIG. 8, in step S201, the control unit 10 instructs the image information processing unit 15 to display the supply image being displayed, that is, the content image or the menu image Pm on the home screen Ph. conduct. Specifically, image information corresponding to the menu image Pm is stored in the storage section 11 , and the control section 10 reads this image information from the storage section 11 and outputs it to the image information processing section 15 . As a result, the menu image Pm is superimposed as an OSD image on the content image and the home screen Ph and displayed on the projection screen Sp.

The menu image Pm is an image for setting and adjusting the operation of the projector 1 . As shown in FIG. 9, a plurality of items M1 are arranged as options on the left side of the menu image Pm. The menu image Pm has a hierarchical structure. When the user operates the remote control 3 to select one item M1, a plurality of subordinate items related to the selected item M1 are displayed on the right side of the menu image Pm. M2 appears as a new option. A parameter M3 currently set for that item is displayed on the right side of each item M2. When the user selects one of the items M2, a setting screen (not shown) relating to the selected item M2 is displayed, and the parameter M3 can be changed on this setting screen. The user can select the items M1 and M2 and change the parameter M3 by operating the direction keys 55 of the remote controller 3. By operating the decision key 56, the selected items M1 and M2 and the changed parameter M3 can be determined. Further, the user can end the display of the menu image Pm by operating the menu key 52 of the remote controller 3 again while the menu image Pm is being displayed.

Returning to FIG. 8, in step S202, the control unit 10 outputs an operation restriction command to the image supply device 2 via the image information input unit 14 by the above-described HDMI CEC. When the operation restriction command is input, the image supply device 2 outputs an operation signal corresponding to the third key group 63 of the remote controller 3, that is, the third key group 63 until a restriction release command (to be described later) is input. Disables the control signal sent when the contained operation key is operated.

In step S203, the control unit 10 determines whether or not the remote controller 3 has been operated to set the menu image Pm, that is, whether the direction key 55 or the enter key 56 of the remote controller 3 has been operated. If the setting operation has been performed, the process proceeds to step S204, and if the setting operation has not been performed, the process proceeds to step S205.

When the setting operation is performed and the process proceeds to step S204, the control unit 10 executes the setting process according to the setting operation, and returns the process to step S203. Specifically, the control unit 10 selects the items M1 and M2 and the parameter M3 according to the operation of the direction key 55, confirms the items M1 and M2 and the parameter M3 according to the operation of the decision key 56, The item M2 to be displayed is updated according to the selected item M1.

If the setting operation is not performed in step S203 and the process proceeds to step S205, the control unit 10 performs an end operation for ending the display of the menu image Pm by the user, that is, the operation of the menu key 52 of the remote controller 3. determine whether or not When the end operation is performed, that is, when the operation signal received by the infrared signal receiving unit 13 indicates the end of displaying the menu image Pm, the control unit 10 shifts the processing to step S207, and the end operation is performed. If not, the process proceeds to step S206.

When the process proceeds to step S206, the control unit 10 determines whether the remote controller 3 has not been operated for a predetermined time, that is, whether the infrared signal receiving unit 13 has not received an operation signal from the remote controller 3. , to determine whether a predetermined time has been reached. The control unit 30 shifts the process to step S207 when the predetermined time has been reached, and returns the process to step S203 when the predetermined time has not been reached.

If the end operation is performed or the process proceeds to step S207 after the remote controller 3 is not operated for a predetermined time, the control unit 10 controls the image information processing unit 15 to display the menu image Pm. Terminate it and return to a state where the content image and the entire home screen Ph are displayed.

In step S208, the control unit 10 outputs a restriction release command to the image supply device 2 via the image information input unit 14 by HDMI CEC, and the flow ends. After receiving this restriction release command, the image supply device 2 resumes control according to the control signal corresponding to the third key group 63 of the remote controller 3 .

FIG. 10 is a flowchart for explaining the operation of the image supply device 2. FIG. When power supply is started, the control section 30 of the image supply device 2 operates according to the flow shown in FIG.

As shown in FIG. 10, in step S301, the control section 30 sets the operation state of the image supply device 2 to the first operation mode. The first operation mode is an operation state in which all operation keys provided on the remote controller 3 are valid.

In step S302, the control unit 30 determines whether or not an operation restriction command is input from the projector 1 via the image information output unit 34 by HDMI CEC. The control unit 30 shifts the process to step S303 when the operation restriction command is not input, and shifts the process to step S305 when the operation restriction command is input.

When the operation restriction command is not input and the process proceeds to step S303, the control unit 30 determines whether or not the Bluetooth communication unit 35 has received an operation signal from the remote controller 3 . The control unit 30 shifts the process to step S304 when the operation signal is received, and returns the process to step S302 when the operation signal is not received.

When the operation signal is received and the process proceeds to step S304, the control unit 30 executes control according to the received operation signal, and then returns the process to step S302. For example, when the Bluetooth communication unit 35 receives an operation signal indicating that the home key 54 of the remote controller 3 has been operated, the control unit 30 controls the projector 1 to output the image information of the home screen Ph. . Further, when receiving an operation signal indicating that the direction key 55 or the enter key 56 of the remote controller 3 has been operated while the home screen Ph is displayed, the control unit 30 executes control to switch content. do. Further, when receiving an operation signal indicating that the selection keys 53a and 53b for switching the content distribution service have been operated, the control unit 30 executes control to connect to a new content distribution service.

When the operation restriction command is input in step S302 and the process proceeds to step S305, the control unit 30 sets the operation state of the image supply device 2 to the second operation mode. The second operation mode is an operation state in which the operation keys included in the third key group 63 among the operation keys of the remote controller 3 are disabled.

At step S<b>306 , the control unit 30 determines whether or not the Bluetooth communication unit 35 has received an operation signal from the remote controller 3 . The control unit 30 shifts the process to step S307 when the operation signal is received, and shifts the process to step S309 when the operation signal is not received.

When an operation signal is input and the process proceeds to step S<b>307 , the control unit 30 determines that the input operation signal is an operation signal corresponding to the third key group 63 , that is, an operation included in the third key group 63 . It is determined whether or not it is an operation signal transmitted when a key is operated. If the received operation signal is not the operation signal corresponding to the third key group 63, the control unit 30 shifts the process to step S308, performs control according to the received operation signal in the same manner as in step S304, and then The process moves to step S309. On the other hand, if the received operation signal is an operation signal corresponding to the third key group 63, the control unit 30 proceeds to step S309 without performing control according to the received operation signal. That is, in the second operation mode, the control section 30 disables the operation signal corresponding to the third key group 63 . In other words, the control unit 30 stops control according to the operation signal corresponding to the third key group 63 .

In step S309, the control unit 30 determines whether or not a restriction release command has been input from the projector 1 via the image information output unit 34 by HDMI CEC. When the restriction release command is input, the control unit 30 returns the process to step S301 and switches the operation state of the image supply device 2 to the first operation mode in which all the operation keys are valid. On the other hand, if the restriction release command has not been input, the control unit 30 returns the process to step S306 to continue the second operation mode.

As described above, according to the image display system 100 and its control method of this embodiment, the following effects can be obtained.

(1) According to the present embodiment, the image supply device 2 performs control based on the operation signal corresponding to the third key group 63 during the period from when the operation restriction command is input until when the restriction release command is input. Stop. Therefore, even if an operation key of the third key group 63 is operated as a setting operation during this period, this operation is invalidated, and unintended operation of the image supply device 2 is suppressed.

(2) According to the present embodiment, while the projector 1 is displaying the menu image Pm, in the image supply device 2, the operation of the operation keys of the third key group 63 is disabled. This prevents the image supply device 2 from performing an unintended operation.

(3) According to the present embodiment, the controller 10 of the projector 1 outputs the restriction release command to the image supply device 2 when the remote controller 3 instructs to end the display of the menu image Pm. The operation of the operation keys of the third key group 63 can be disabled for a period according to the instruction.

(4) According to the present embodiment, the controller 10 of the projector 1 outputs the restriction release command when the remote controller 3 has not been operated for a predetermined time. Unnecessarily lengthening of the invalid period is suppressed.

(5) According to the present embodiment, when the projector 1 is operated using the remote controller 3 capable of transmitting both infrared operation signals and Bluetooth operation signals, the image supply device 2 performs an unintended operation. is suppressed.

In the above embodiment, the operation keys included in the first key group 61 correspond to the first operation keys, the operation keys included in the second key group 62 correspond to the second operation keys, and the operation keys included in the second key group 62 correspond to the third keys. The operation keys included in group 63 correspond to the third operation key. Also, the operation restriction command corresponds to the first command, and the restriction cancellation command corresponds to the second command. Further, display of the menu image Pm corresponds to the first action, and operation of the menu key 52 for displaying the menu image Pm corresponds to the condition for starting the first action. Further, conditions for ending the first operation are that an end operation for ending the display of the menu image Pm is performed and that the time during which no infrared operation signal is input from the remote controller 3 reaches a predetermined time. and a second command is output if either condition is met.

Moreover, the above embodiment may be modified as follows.

In the above embodiment, the projector 1 outputs the operation restriction command to the image supply device 2 when the menu key 52 of the remote controller 3 is operated. It is desirable to output a limit command. According to this configuration, even when the operation of the remote controller 3 and the operation of the operation unit 12 are mixed, unintended operation of the image supply device 2 can be suppressed.

In the above embodiment, the projector 1 outputs the operation restriction command only once when the menu key 52 of the remote controller 3 is operated. In this case, it is desirable to output the operation restriction command multiple times. For example, an operation restriction command may be output each time a setting operation is performed on the menu image Pm, that is, an operation of the direction key 55 or the decision key 56 is performed.

In the above embodiment, the projector 1 outputs the operation restriction command to the image supply device 2 when the menu key 52 of the remote controller 3 is operated, but outputs the operation restriction command when another operation key is operated. You may make it output. For example, the projector 1 has a function of correcting an image distorted into a trapezoidal shape due to projection from an oblique direction into a rectangular shape. , the operation restriction command may be output when the trapezoidal distortion correction key is operated. According to this aspect, when the direction key 55 or the decision key 56 is used to adjust the direction of correction or the amount of correction after the trapezoidal distortion correction key is operated, it is possible to prevent the image supply device 2 from performing an unintended operation. be. In this aspect, correction of trapezoidal distortion corresponds to the first operation.

Further, the remote control 3 is provided with a volume adjustment key for adjusting the volume of the sound emitted from the speaker (not shown). is possible, the operation restriction command may be output when the volume adjustment key is operated. Further, in a mode in which the image information input unit 14 has a plurality of connection terminals and the remote controller 3 is provided with an input selection key for selecting an effective connection terminal from among these terminals, when the input selection key is operated, the connection An input selection image including a list of terminals may be displayed as an OSD image, and an operation restriction command may be output prior to receiving an operation of the direction key 55 or enter key 56 for selecting a connection terminal. good.

In the above embodiment, the operation key for starting the display of the menu image Pm and the operation key for ending the display of the menu image Pm are both the menu key 52, but they need not be the same operation key. Instead, it may be a different operation key.

In the above embodiment, the projector 1 outputs the operation restriction command to the image supply device 2 when the menu key 52 of the remote controller 3 is operated. Alternatively, the operation restriction command may be output without accompanying the operation, and the restriction release command may be output when the processing is completed. For example, when the control unit 10 detects that an abnormality has occurred in the projector 1, the control unit 10 controls the image information processing unit 15 to display a message image including a message notifying that an abnormality has occurred. The process of superimposing an OSD image on the image is started. Specifically, the image information of the message image is stored in the storage unit 11 in advance. The image information of the message image is superimposed on the image information of the message image. The control unit 10 controls the image information processing unit 15 to terminate the superimposition of the message image when the abnormality occurring in the projector 1 is no longer detected. In this case, the control section 10 may output an operation restriction command to the image supply device 2 when the image information processing section 15 starts the process of superimposing the message image. Further, the control section 10 may output a restriction release command to the image supply device 2 when the image information processing section 15 ends the process of superimposing the message image. In this aspect, the message image corresponds to an image containing a message indicating the status of the projector 1, and display of the message image corresponds to the first operation. Further, detecting that an abnormality has occurred in the projector 1 corresponds to a condition for starting the first operation, and stopping detection of an abnormality that has occurred in the projector 1 corresponds to a condition for ending the first operation. Equivalent to.

In the above embodiment, the projector 1 is operated by an infrared operation signal, and the image supply device 2 is operated by a Bluetooth operation signal. Further, operation signals of communication methods other than infrared rays and Bluetooth may be employed.

In the above embodiments, the transmissive liquid crystal light valves 22R, 22G, and 22B are used as the light modulating device, but it is also possible to use a reflective light modulating device such as a reflective liquid crystal light valve. A digital mirror device or the like that modulates the light emitted from the light source 21 by controlling the emission direction of the incident light for each micromirror as a pixel can also be used. Further, the configuration is not limited to the configuration in which a plurality of light modulation devices are provided for each color light, and a configuration in which a single light modulation device modulates a plurality of color lights in a time-division manner may be employed.

In the above embodiment, the projector 1 is described as an example of the image display device, but the image display device is not limited to the projector 1, and other image display devices such as a liquid crystal display and an organic EL (Electro Luminescence) display may be used. There may be.

In the above embodiment, a set-top box is exemplified as the image supply device 2, but the image supply device 2 is not limited to a set-top box, and may be various image reproduction devices.

** Modified example when image source is selected **
In the above embodiment, an example of the first operation when the projector 1 projects and displays the menu image Pm has been described, but the present invention is not limited to this. More specifically, the first action may be started when a specific operation related to the projector 1 is performed or in a specific state, regardless of the image supply device 2 .

FIG. 11 is a plan view showing the appearance of the remote controller 4 of this modified example, and corresponds to FIG.
The remote controller 4 shown in FIG. 11 has the same basic configuration as the remote controller 3 shown in FIG. 6, but is configured to facilitate switching of image sources. Specifically, the remote controller 4 has a source selection key 57 and four direct selection keys 81-84. An AV (Audio Visual) mute key 58 is also provided. As described above, the image information input unit 14 of the projector 1 is provided with a plurality of connection terminals including an HDMI terminal. Specifically, it has three HDMI terminals and one VGA (Video Graphics Array) terminal. When the source selection key 57 is operated, the OSD display of the source selection image which can list these four connection terminals is displayed. Further, a configuration including a USB (Universal Serial Bus) terminal, a LAN (Local Area Network) terminal, and the like may be employed.

In this modified example, the image supply device 2 is connected to the first HDMI terminal. When the direct selection key 81 is operated, the first HDMI terminal is directly selected without displaying the source selection image. Note that the first HDMI terminal is also called a source S1.
A BD (Blu-ray (registered trademark) Disc) player is connected to the second HDMI terminal. When the direct selection key 82 is operated, the second HDMI terminal is directly selected. Note that the second HDMI terminal is also called a source S2.
A digital video camera is connected to the third HDMI terminal. When the direct selection key 83 is operated, the third HDMI terminal is directly selected. Note that the third HDMI terminal is also called a source S3.
A notebook PC (Personal Computer) is connected to the VGA terminal. When the direct selection key 84 is operated, the VGA terminal is directly selected. Note that the VGA terminal is also called a source S4.

Source selection key 57 and direct selection keys 81 to 84 are included in first key group 61 used only for operating projector 1 . An AV mute key 58 is also included in the first key group 61 . The remote controller 4 is the same as the remote controller 3 described above except that it has a plurality of keys for selecting these image sources, and has the same configuration and functions as those described with reference to FIGS. 5 to 7. FIG. Hereinafter, the same parts as those of the remote controller 3 are given the same numbers, and redundant explanations are omitted.

**Mode of operation in source selection image**
FIG. 12 is a flow chart showing the operation of the projector 1 when displaying the source selection image. FIG. 13 is a diagram showing a source selection image and corresponds to FIG. In addition, the same numbers are assigned to the same parts as those described above, and overlapping descriptions are omitted. Further, the following operations are realized by the projector 1 using an operation signal from the remote controller 4 as a trigger to control each part of the projector 1 according to the control program in the storage part 11 .

In step S211, the operation input of the source selection key 57 from the remote controller 4 is accepted. Specifically, the infrared signal receiving section 13 receives an operation signal of the source selection key 57 from the remote controller 4 and transmits it to the control section 10 of the projector 1 .

In step S212, the control unit 10 causes the image information processing unit 15 to display the source selection image Ps1. Specifically, the image information of the source selection image Ps1 is read out from the storage unit 11 and output to the image information processing unit 15 . As a result, the source selection image Ps1 shown in FIG. 13 is superimposed on the content image or home screen Ph as an OSD image.

The source selection image Ps1 is a selection list screen for selecting a desired image supply source from among a plurality of image supply sources including the image supply device 2 connected to the projector 1 . In other words, it is a list screen of a plurality of connection terminals of the projector 1, and is a selection screen for selecting a connection terminal to which a desired image supply source is connected. Note that the image supply source is also called an image source or a source.
As described above, the projector 1 has three HDMI terminals and one VGA terminal. Source selection image Ps1 includes, from the top, source S1, source S2, source S3,
The list is displayed side by side in the order of the source S4. In the source selection image Ps1, the source S1, which is the HDMI terminal to which the image supply device 2 is connected, is highlighted and selected. A BD player is connected to the HDMI terminal of the source S2. Source S
A digital video camera is connected to the 3 HDMI terminal. A notebook PC is connected to the VGA terminal of the source S4.

In step S213, it is determined whether or not the operation input of the source selection key 57 from the remote controller 4 has been performed again. If there is another operation input, the process proceeds to step S214. If there is no operation input again, the process proceeds to step S215.

In step S214, since the operation input of the source selection key 57 is performed, the next image supply source is selected, and the process returns to step S212. As a result, as shown in the source selection image Ps2 in FIG. 13, the source S2 next to the source S1 is selected and the source S2 is highlighted. When the source selection key 57 is operated again while the source S2 is selected, the next source S3 is selected. In this manner, the source is sequentially switched to the selected state each time the source selection key 57 is operated within a predetermined period of time, thereby enabling cyclic source selection.

In step S215, it is determined whether or not the source selection key 57 has not been operated for a predetermined period of time. If the predetermined time has passed, the process proceeds to step S216. If the predetermined time has not elapsed, the process returns to step S213. The predetermined time is several seconds, and in a preferred example, it is four seconds.

In step S216, after switching the image source to the selected source, the display of the source selection image ends. In other words, the currently selected source is confirmed and the display of the source selection image ends. For example, in the case of the source selection image Ps2, the image source is switched from the image source being selected on the back of the OSD display to the source S2, and the source selection image Ps2 ends.

In step S217, it is determined whether the selected source is the source S1. If it is the source S1, the process ends. If it is not the source S1, the process proceeds to step S218.

In step S218, the control unit 10 outputs an operation restriction command to the image supply device 2 via the image information input unit 14 by the above-described HDMI CEC. As described in the above embodiment, the image supply device 2 that has received the operation restriction command disables the operation corresponding to the third key group 63 of the remote controller 4 until it receives the restriction release command.

As described above, according to this source selection program, when the selected source is the source S1, the operation restriction command is not output, and when the selected source is the sources S2 to S4, the operation restriction command is output. In other words, when the selected sources are the sources S2 to S4, the operation restriction command is output because the conditions for starting the first operation are satisfied. Accordingly, it is possible to prevent the image supply device 2 from performing an unintended operation.

In this way, the control unit 10 of the projector 1 uses the image information supplied from the image supply device 2, for example, from the first state in which the source S1 is selected and the image information supplied from the image supply device 2 is used. When the source selection key 57 is operated to change to the second state in which the source selection is not performed, an operation restriction command is output as the first command to the image supply device 2 . Then, when an operation to select the image supply device 2 is performed again, a restriction release command is output as a second command to the image supply device 2 . By operating the source selection key 57 in a state where an image source other than the source S1 is selected, selecting the image supply device 2 of the source S1 puts the projector 1 as the image display device into the second state. to the first state.

In addition, in the flowchart of FIG. 12, after the source is determined in step S216, the operation restriction command is output, but the flow is not limited to this. For example, after the source selection image Ps1 is displayed in step S212, the operation restriction command may be output in the next step. In this case, if the source S1 is selected in step S217, a restriction release command is output. Even with this method, similar effects can be obtained.

** Operation mode in direct source selection **
FIG. 14 is a flow chart showing the flow of processing when the direct selection key is operated. As described above, when the direct selection keys 81 to 84 of the remote controller 4 are operated, the desired image source is directly selected without displaying the source selection image. Hereinafter, the operation flow of the projector 1 when the direct selection key is pressed will be described mainly with reference to FIG. 14 and with appropriate reference to FIG. 11 . Note that explanations overlapping with the above explanation will be omitted.

In step S221, operation input of the direct selection keys 81 to 84 from the remote controller 4 is accepted. For example, when the direct selection key 82 is operated, the infrared signal receiving section 13 receives the operation signal of the direct selection key 82 from the remote controller 4 and transmits it to the control section 10 of the projector 1 .

In step S222, the image source corresponding to the direct selection key 82 is switched. Specifically, the image source is switched to the BD player connected to the second HDMI terminal corresponding to the direct selection key 82 .
When the direct selection key 81 is operated in step S221, the image source is switched to the image supply device 2 connected to the first HDMI terminal. Similarly, when the direct selection key 83 is operated, the image source is switched to the digital video camera connected to the third HDMI terminal. When the direct selection key 84 is operated, the image source is switched to the notebook PC connected to the VGA terminal.

In step S223, the control unit 10 outputs an operation restriction command to the image supply device 2 via the image information input unit 14 by the above-described HDMI CEC. As a result, the image supply device 2 that has received the operation restriction command disables the operation corresponding to the third key group 63 of the remote controller 4 until it receives the restriction release command.
Only when the direct selection key 81 is operated, the operation restriction command is set not to be output in step S223.

As described above, even when the direct selection keys 81 to 84 of the remote controller 4 are operated, the same effect as when the source selection key 57 is used can be obtained. Specifically, when the source selected by operating the direct selection keys 81 to 84 is the source S1, no operation restriction command is output, and when the source is S2 to S4, the operation restriction command is output. In other words, when the selected sources are the sources S2 to S4, the operation restriction command is output because the conditions for starting the first operation are satisfied. Accordingly, it is possible to prevent the image supply device 2 from performing an unintended operation. Furthermore, the desired image source can be directly selected without displaying the source selection image, which is convenient.

**Operating mode by AV mute key operation**
FIG. 15 is a flow chart showing the flow of processing when the AV mute key is operated. The operation restriction command is output not only when selecting an image source, but also when a specific operation related to the projector 1 is performed or in a specific state. In other words, the output of the operation restriction command is executed when a specific operation related to the projector 1 that does not involve the image supply device 2 is performed, or in a specific state of the projector 1 .
Hereinafter, the operation flow of the projector 1 when the AV mute key is pressed will be described mainly with reference to FIG. 15 and with appropriate reference to FIG. 11 . Note that explanations overlapping with the above explanation will be omitted.

In step S231, the operation input of the AV mute key 58 from the remote controller 4 is accepted. When the AV mute key 58 is operated, the infrared signal receiver 13 receives the operation signal of the AV mute key 58 from the remote controller 4 and transmits it to the controller 10 of the projector 1 .

In step S232, AV muting is performed. Specifically, the projector 1 suspends image projection and audio output, and enters an AV mute state. Note that the AV mute is a function used when the user wants to temporarily stop image projection by the projector 1, for example, when the user wants to stand in front of the screen and give an explanation to the participants.
Execution of AV muting is not limited to when the AV mute key 58 is operated, and AV muting is also executed when an image source is not supplied for a predetermined time. For example, when the source S2 is selected and no image source is supplied from the BD player for one hour or more, AV mute is automatically performed. The predetermined time is not limited to one hour, and can be set as appropriate using the operation unit 12 of the projector 1 . Similarly, even when the source S1 is selected, AV muting is performed when the image source is not supplied for a predetermined time.

In step S233, the control unit 10 outputs an operation restriction command to the image supply device 2 via the image information input unit 14 by the above-described HDMI CEC. As a result, the image supply device 2 that has received the operation restriction command disables the operation corresponding to the third key group 63 of the remote controller 4 until it receives the restriction release command.
When the AV mute key 58 is operated again in the AV mute state, image projection and audio output are resumed. At the same time, it is set to output a restriction release command to the image supply device 2 .

As described above, when the AV mute is executed, the operation restriction command is output regardless of which of the sources S1 to S4 is selected. Accordingly, it is possible to prevent the image supply device 2 from performing an unintended operation.

**Mode of operation when specific processing occurs**
Further, when a specific process related to the projector 1 occurs, it is possible to output an operation restriction command even if no operation key is operated, and to output a restriction cancellation command when the process ends. good. For example, when the initial setting screen is displayed when the projector 1 is used for the first time, an operation restriction command is output to the image supply device 2 along with the display of the initial setting screen. Then, after the initial setting is completed, a restriction cancellation command is output to the image supply device 2 . This is the same as the case where an abnormality notification message is displayed when an abnormality occurs in the projector 1 described above.
In this way, by outputting the operation restriction command in a specific state of the projector 1, it is possible to prevent the image supply device 2 from performing an unintended operation.

The contents derived from the embodiment are described below.

The image display system includes an image supply device that supplies image information, an image display device that displays an image based on the image information supplied from the image supply device, and remote control of the image supply device and the image display device. and a remote controller, the remote controller having a first operation key, a second operation key, and a third operation key, and a first transmission for transmitting a first operation signal. a second transmission unit that transmits a second operation signal using a communication method different from that of the first operation signal; and from the first transmission unit when the first operation key is operated. When the first operation signal is transmitted and the second operation key is operated, the second operation signal is transmitted from the second transmission unit and the third operation key is operated. a remote control unit for transmitting the first operation signal from the first transmission unit and transmitting the second operation signal from the second transmission unit, The image display device includes a first input/output unit connected to the image supply device, a first reception unit for receiving the first operation signal, and the first operation signal received by the first reception unit. and a first control unit that performs control according to the operation signal of the image supply device, the second input/output unit connected to the image display device, and receiving the second operation signal and a second control unit that performs control according to the second operation signal received by the second reception unit, wherein the first control unit includes a first When the condition for starting the operation of (1) is satisfied, control to start the first operation and output of the first command to the image supply device are performed, and after outputting the first command When a condition for terminating the first operation is satisfied, the second control unit performs control for terminating the first operation and outputs a second command to the image supply device, , during the period from when the first command is input until when the second command is input, control according to the second operation signal transmitted when the third operation key is operated; It is characterized by stopping.

According to this configuration, the image supply device transmits the second operation transmitted when the third operation key is operated after the first command is input until the second command is input. Stop signal-based control. Therefore, even if the third operation key is operated in connection with the first operation while the image display device is performing the first operation, this operation is invalidated and the image supply device performs an unintended operation. It is suppressed to do.

In the image display system described above, the condition for starting the first operation may be that the first operation signal received by the first receiving unit indicates the start of the first operation. .

According to this configuration, the first control unit outputs the first command when the first receiving unit receives the first operation signal indicating the start of the first operation from the remote controller. The operation of the third operation key can be invalidated at the timing according to the instruction of .

In the image display system described above, the condition for ending the first operation may be that the first operation signal received by the first receiving unit indicates the end of the first operation. .

According to this configuration, the first control unit outputs the second command when the first receiving unit receives the first operation signal indicating the end of the first operation from the remote controller. The operation of the third operation key can be disabled for a period corresponding to the instruction of .

In the image display system described above, the condition for ending the first operation may be that a period of time during which the first operation signal is not received by the first receiving unit reaches a predetermined period of time. .

According to this configuration, the first control unit outputs the second command when the time period in which the first operation signal is not received reaches the predetermined time, so that the operation of the third operation key is performed. It is possible to prevent the invalid period from becoming unnecessarily long.

In the above image display system, the first operation may be display of a menu image for setting the image display device.

According to this configuration, while the image display device is displaying the menu image, the operation of the third operation key is disabled in the image supply device. It is suppressed to do.

In the image display system described above, the first operation may be display of an image including a message indicating the state of the image display device.

According to this configuration, while the state of the image display device is being notified to the user, the operation of the third operation key is disabled, so that the image supply device can be prevented from performing unintended operations.

In the above image display system, the first operation signal may be an infrared operation signal, and the second operation signal may be a Bluetooth operation signal.

According to this configuration, when the image display device is operated using a remote controller capable of transmitting both infrared signals and Bluetooth signals, unintended operations of the image supply device are suppressed.

A control method of an image display system includes an image supply device that supplies image information, an image display device that displays an image based on the image information supplied from the image supply device, the image supply device and the image display device. A control method for an image display system, comprising: a remote control for remotely operating the When a second operation key provided on the remote controller is operated, the remote controller transmits a second operation signal having a communication method different from that of the first operation signal, and a third operation key provided on the remote controller is operated. When operated, the remote controller transmits the first operation signal and the second operation signal, the image display device receives the first operation signal, and the a condition for performing control according to a first operation signal, the image supply device receiving the second operation signal, performing control according to the second operation signal, and starting a first operation; is satisfied, the image display device performs control to start the first operation and outputs a first command to the image supply device, and the image display device performs the first After outputting a command, when a condition for terminating the first operation is satisfied, performing control for terminating the first operation and outputting a second command to the image supply device; The image supply device transmits the second operation signal when the third operation key is operated after the first command is input until the second command is input. It is characterized by stopping the control according to.

According to this control method, the image supply device receives the second command sent when the third operation key is operated during the period from when the first command is input until when the second command is input. Stop the control based on the operation signal. Therefore, even if the third operation key is operated in connection with the first operation while the image display device is performing the first operation, this operation is invalidated and the image supply device performs an unintended operation. It is suppressed to do.

The image display system includes an image supply device that supplies image information, an image display device that displays an image based on the image information supplied from the image supply device, a remote control that remotely operates the image supply device and the image display device, , wherein the remote controller includes a first operation key, a second operation key, and a third operation key, a first transmission unit that transmits the first operation signal, and a first a second transmission unit for transmitting a second operation signal having a communication method different from that of the operation signal of the second transmission unit; and a first transmission unit for transmitting the first operation signal when the first operation key is operated. , causing the second transmission unit to transmit the second operation signal when the second operation key is operated, and transmitting the first operation signal from the first transmission unit when the third operation key is operated. The image display device has a first input/output connected to the image supply device, and has a remote control unit for transmitting an operation signal and transmitting the second operation signal from the second transmission unit. a first receiving unit that receives a first operation signal; and a first control unit that performs control according to the first operation signal received by the first receiving unit, and supplies an image. The device includes a second input/output unit connected to the image display device, a second receiving unit for receiving the second operation signal, and a control unit according to the second operation signal received by the second receiving unit. and the first control unit controls the image display device to display the image supplied from the image supply device from the first state in which the image information supplied from the image supply device is used. When an operation to change to the second state without using information is performed, an operation to output the first command to the image supply device and change the image display device from the second state to the first state is performed. When the second command is input, the second control unit outputs the second command to the image supply device, and the second control unit outputs the third command after the first command is input until the second command is input. It is characterized by stopping the control according to the second operation signal transmitted when the operation key is operated.

According to this configuration, the image supply device transmits the second operation transmitted when the third operation key is operated after the first command is input until the second command is input. Stop signal-based control. Specifically, since the first command is output when an operation is performed to change to the second state in which the image information supplied from the image supply device is not used, the third operation key is subsequently operated. However, this operation is invalidated, and unintended operation of the image supply device is suppressed. In other words, when a specific operation related to the image display device, which is not related to the image supply device, is performed, outputting the first command prevents the image supply device from performing an unintended operation. can be suppressed.

DESCRIPTION OF SYMBOLS 1... Projector 2... Image supply apparatus 3, 4... Remote controller 10... Control part 11... Storage part 12... Operation part 13... Infrared signal receiving part 14... Image information input part 15... Image information processing Part 16... Image projection part 21... Light source 22R, 22G, 22B... Liquid crystal light valves 22i... Image forming area 23... Projection optical system 24... Light valve driving part 30... Control part 31... Storage part , 32... network communication unit, 33... decoder, 34... image information output unit, 35... Bluetooth communication unit, 40... control unit, 41... operation unit, 42... infrared signal transmission unit, 43... Bluetooth communication unit, 51... power supply Keys 52 Menu key 53a, 53b Selection key 54 Home key 55 Direction key 56 Decision key 57 Source selection key 58 AV mute key 81 to 84 Direct selection key 61 1st key group 62 2nd key group 63 3rd key group 71 icon 72 thumbnail image 100 image display system C1 cable C2 cable M1, M2 item M3 Parameters NW Network Ph Home screen Pm Menu image Ps1, Ps2 Source selection image S1 to S4 Source Sp Projection surface.

Claims (9)

An image display system comprising: an image supply device that supplies image information ; an image display device that displays an image based on the image information; and a remote control that remotely operates the image supply device and the image display device. hand,
The remote controller
a first operating key, a second operating key, and a third operating key;
a first transmission unit that transmits a first operation signal;
a second transmission unit that transmits a second operation signal using a communication method different from that of the first operation signal;
causing the first transmission unit to transmit the first operation signal when the first operation key is operated, and transmitting the first operation signal from the second transmission unit when the second operation key is operated; When the second operation signal is transmitted and the third operation key is operated, the transmission of the first operation signal from the first transmission unit and the transmission of the first operation signal from the second transmission unit a remote controller for transmitting a second operation signal;
The image display device is
a first input/output unit connected to the image supply device;
a first receiver that receives the first operation signal;
a first control unit that performs control according to the first operation signal received by the first reception unit;
has
The image supply device is
a second input/output unit connected to the image display device;
a second receiver that receives the second operation signal;
a second control unit that performs control according to the second operation signal received by the second reception unit;
has
The first control unit is
performing control for starting the first operation and outputting a first command to the image supply device when a condition for starting the first operation is satisfied;
controlling to end the first operation when a condition for ending the first operation is satisfied after outputting the first command; and outputting a second command to the image supply device. and
The second control unit is
During the period from when the first command is input until when the second command is input, the control according to the second operation signal transmitted when the third operation key is operated is stopped. An image display system characterized by: The image display system according to claim 1,
The image display system, wherein the condition for starting the first action is that the first operation signal received by the first receiving section indicates the start of the first action. The image display system according to claim 1 or 2,
The image display system, wherein the condition for ending the first operation is that the first operation signal received by the first receiving section indicates the end of the first operation. The image display system according to claim 1 or 2,
The image display system, wherein the condition for terminating the first operation is that the time during which the first operation signal is not received by the first receiving unit reaches a predetermined time. The image display system according to any one of claims 1 to 4,
The image display system, wherein the first operation is display of a menu image for setting the image display device. The image display system according to any one of claims 1 to 4,
The image display system, wherein the first operation is to display an image including a message indicating the state of the image display device. The image display system according to any one of claims 1 to 6,
The first operation signal is an infrared operation signal, and the second operation signal is a Bluetooth
The image display system which is the operation signal of ooth. Control of an image display system comprising an image supply device that supplies image information , an image display device that displays an image based on the image information, and a remote control that remotely operates the image supply device and the image display device a method,
when a first operation key provided on the remote controller is operated, the remote controller transmits a first operation signal;
When a second operation key provided on the remote control is operated, the remote control
transmits a second operation signal whose communication method is different from that of the operation signal of
When a third operation key provided on the remote controller is operated, the remote controller controls the first
transmitting the operation signal of and transmitting the second operation signal,
The image display device receives the first operation signal and performs control according to the first operation signal,
the image supply device receiving the second operation signal and performing control according to the second operation signal;
when a condition for starting a first action is satisfied, the image display device controls to start the first action and outputs a first command to the image supply device;
After the image display device outputs the first command, when a condition for terminating the first operation is satisfied, control for terminating the first operation; and output the second command,
The image supply device transmits the second operation signal when the third operation key is operated after the first command is input until the second command is input. A control method for an image display system, characterized by stopping control according to An image display system comprising: an image supply device that supplies image information ; an image display device that displays an image based on the image information; and a remote control that remotely operates the image supply device and the image display device. hand,
The remote controller
a first operating key, a second operating key, and a third operating key;
a first transmission unit that transmits a first operation signal;
a second transmission unit that transmits a second operation signal using a communication method different from that of the first operation signal;
causing the first transmission unit to transmit the first operation signal when the first operation key is operated, and transmitting the first operation signal from the second transmission unit when the second operation key is operated; When the second operation signal is transmitted and the third operation key is operated, the transmission of the first operation signal from the first transmission unit and the transmission of the first operation signal from the second transmission unit a remote controller for transmitting a second operation signal;
The image display device is
a first input/output unit connected to the image supply device;
a first receiver that receives the first operation signal;
a first control unit that performs control according to the first operation signal received by the first reception unit;
has
The image supply device is
a second input/output unit connected to the image display device;
a second receiver that receives the second operation signal;
a second control unit that performs control according to the second operation signal received by the second reception unit;
has
The first control unit is
When the image display device is operated to change from the first state in which the image information is used to the second state in which the image information is not used, the first state to the image supply device is performed. Do the output of the command,
outputting a second command to the image supply device when an operation is performed to change the image display device from the second state to the first state;
The second control unit is
During the period from when the first command is input until when the second command is input, the control according to the second operation signal transmitted when the third operation key is operated is stopped. An image display system characterized by:

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