JP2020068498A - Display system, display unit, and method for controlling display system - Google Patents

Abstract

To increase convenience for a user.SOLUTION: A smartphone 200 comprises: a first communication unit 230 and a second communication unit 240 that execute radio communication independent of each other; and a first control unit 210. A projector 100 comprises: a third communication unit 141 and a fourth communication unit 142 that execute radio communication independent of each other; and a second control unit 150. The second control unit 150 receives an image through the first communication unit 230 and the third communication unit 141, and transmits or receives control information CJ through the second communication unit 240 and the fourth communication unit 142. The second control unit 150 includes a determination unit 166 that, when the communication between the first communication unit 230 and the third communication unit 141 is disconnected, determines whether or not the disconnection is a specific disconnection based on the control information, and a re-connection unit 167 that, when the disconnection is determined not to be the specific disconnection, re-connects the communication between the first communication unit 230 and third communication unit 141.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a display system, a display device, and a display system control method.

Conventionally, there is known a projector system in which a projector and a personal computer are network-connected (for example, see Patent Document 1).
The projector system described in Patent Document 1 is configured by connecting a projector and a personal computer via a network. The projector generates a password required to establish a network connection and projects it on the screen. On the personal computer side, the user sees the password projected on the screen and inputs it. The projector and the personal computer use this password to perform connection authentication and encrypted communication.

JP, 2003-69923, A

  It is an object of the present invention to provide a display system, a display device, and a control method of the display system, which can improve the convenience of the user.

  One aspect for achieving the above object is a display system having an image transmitting device for transmitting an image and a display device for displaying the image transmitted by the image transmitting device, wherein the image transmitting devices are independent of each other. A first communication unit and a second communication unit that perform wireless communication with each other, and a transmission side control that transmits the image by the first communication unit and transmits or receives control information to and from the display device by the second communication unit. A third communication unit and a fourth communication unit that perform wireless communication independently of each other, and the display device receives the image transmitted by the first communication unit by the third communication unit. And a receiving-side control unit that transmits and receives the control information to and from the image transmission device by the fourth communication unit, wherein the transmitting-side control unit or the receiving-side control unit is the first communication unit and the third communication unit. Communication with communication unit When it is disconnected, it is determined whether or not it is a specific disconnection based on the control information, and when it is determined that it is not the specific disconnection, between the first communication unit and the third communication unit A display system that reconnects communications.

  In the display system, at least one of the image transmission device and the display device includes an operation unit that receives an operation, and the transmission-side control unit or the reception-side control unit includes the first communication unit and the third communication unit. A configuration may be adopted in which when the disconnection of communication with a unit is caused by the operation of the operation unit, the specific disconnection is determined.

  In the display system, the transmission-side control unit or the reception-side control unit may be configured to communicate with the second communication unit when a communication connection is established between the first communication unit and the third communication unit. It may be configured to connect communication with the fourth communication unit.

  In the display system, the transmission-side control unit or the reception-side control unit, when the transmission of the image is started between the first communication unit and the third communication unit, and the second communication unit. It may be configured to connect communication with the fourth communication unit.

  In the above display system, the transmission-side control unit or the reception-side control unit may include the second communication unit and the fourth communication unit when communication between the first communication unit and the third communication unit is disconnected. It may be configured to connect communication with the communication unit.

  In the display system, the first communication unit and the second communication unit may be configured by different hardware, and the third communication unit and the fourth communication unit may be configured by different hardware. Good.

  In the above display system, the display device includes a display unit, and the reception side control unit causes the display unit to display the image received by the third communication unit and determines that the image is not the specific disconnection. In addition, the configuration may be such that an image indicating that communication between the first communication unit and the third communication unit is reconnected is displayed on the display unit.

  In the display system, the second communication unit and the fourth communication unit may communicate with each other via short-range wireless communication.

  Another aspect of achieving the above object is a display device that displays an image transmitted by an image transmission device that includes a first communication unit and a second communication unit that perform wireless communication independently of each other. A third communication unit and a fourth communication unit that perform wireless communication with each other, and the third communication unit receives the image transmitted by the first communication unit, and the fourth communication unit controls the image transmission device. A reception side control unit for receiving information, wherein the reception side control unit is configured to specify a specific information based on the control information when communication between the first communication unit and the third communication unit is disconnected. It is a display device that determines whether or not a disconnection is made, and reconnects communication between the first communication unit and the third communication unit when it is determined that the disconnection is not the specific disconnection.

  Yet another aspect of achieving the above object is a method of controlling a display system, comprising: an image transmitting device that transmits an image; and a display device that displays the image transmitted by the image transmitting device, Transmitting the image by a first communication unit included in the transmission device, receiving the image by a third communication unit included in the display device, and including the image transmission device in the first communication unit The control information is transmitted by the second communication unit that performs wireless communication independently of each other, or by the fourth communication unit that is included in the display device and that performs wireless communication independently of the third communication unit. And receiving the control information by the second communication unit or the fourth communication unit and disconnecting the communication between the first communication unit and the third communication unit, the control Informed specific Determining whether it is a disconnection, and reconnecting communication between the first communication unit and the third communication unit when it is determined that the specific disconnection is not, It is a control method of a display system.

FIG. 3 is a block diagram showing the configuration of a projector. The figure which shows the structure of the display system which concerns on 1st Embodiment and 2nd Embodiment. 3 is a flowchart showing processing of the display system according to the first embodiment. The flowchart which shows the process of the display system which concerns on 2nd Embodiment. The figure which shows the structure of the display system which concerns on 3rd Embodiment and 4th Embodiment. The flowchart which shows the process of the display system which concerns on 3rd Embodiment. The flowchart which shows the process of the display system which concerns on 4th Embodiment.

Hereinafter, embodiments will be described with reference to the drawings.
The embodiment will be described with reference to FIGS. 2 and 3, a first embodiment, a second embodiment with reference to FIGS. 2 and 4, and a description with reference to FIGS. 5 and 6. 3rd Embodiment and 4th Embodiment demonstrated with reference to FIG.5 and FIG.7 are included.
FIG. 1 is a block diagram showing the configuration of the projector 100.

As shown in FIG. 1, the display system 1 includes a projector 100 and a smartphone 200. The projector 100 includes a projection unit 110 and a drive unit 120 that drives the projection unit 110. The projector 100 corresponds to an example of a “display device”.
The projection unit 110 includes a light source 111, a light modulator 112, and an optical unit 113. The driving unit 120 includes a light source driving unit 121 and a light modulation device driving unit 122. The projection unit 110 corresponds to an example of a “display unit”.

The light source 111 includes a lamp such as a halogen lamp, a xenon lamp, an ultra-high pressure mercury lamp, or a solid light source such as an LED (Light Emitting Diode) or a laser light source.
The light source drive unit 121 turns on or off the light source 111 under the control of the second control unit 150 described later. Further, the light source drive unit 121 adjusts the brightness of the light source 111 that has been turned on.

  The light modulation device 112 includes a light modulation element that modulates the light emitted by the light source 111. In the embodiment, the case where the light modulation device 112 includes the transmissive liquid crystal panel 115 as a light modulation element will be described, but the invention is not limited to this. The light modulation element may be a reflective liquid crystal panel 115, or a digital mirror device (Digital Mirror Device).

  The liquid crystal panel 115 is configured by arranging a plurality of pixels as display units in a matrix in the vertical and horizontal directions.

  A synchronization signal and image data are input to the light modulator driving unit 122 from an image processing unit 145 described later. The light modulator drive unit 122 generates a drive signal for driving the liquid crystal panel 115 based on the input image data. The light modulator driving unit 122 draws an image on the liquid crystal panel 115 based on the synchronization signal and the driving signal. That is, the light modulator driving unit 122 changes the transmittance of each pixel forming the liquid crystal panel 115 to the transmittance corresponding to the image. As a result, the light emitted from the light source 111 is modulated by the liquid crystal panel 115 whose transmittance is changed, and image light is generated. The generated image light is incident on the optical unit 113.

  The optical unit 113 includes a lens and a mirror that image the incident image light on the projection surface 105. The optical unit 113 can also be configured to include various lenses or lens groups such as a zoom lens and a focus lens.

  The projector 100 further includes an operation unit 131, a remote control light receiving unit 133, an input interface 135, a storage unit 137, a third communication unit 141, a fourth communication unit 142, a frame memory 143, an image processing unit 145, and a second control unit 150. . The input interface 135, the storage unit 137, the third communication unit 141, the image processing unit 145, and the second control unit 150 are connected to each other via the bus 107 so that data communication is possible.

  The operation unit 131 includes various buttons and switches provided on the surface of the housing of the projector 100, generates an operation signal corresponding to the operation of these button switches, and outputs the operation signal to the input interface 135. The input interface 135 outputs the operation signal input from the operation unit 131 to the second control unit 150.

The remote control light receiving section 133 receives an infrared signal transmitted from the remote controller 5, decodes the received infrared signal, and generates an operation signal. The remote control light receiver 133 outputs the generated operation signal to the input interface 135. The input interface 135 outputs the operation signal input from the remote controller light receiving unit 133 to the second control unit 150.
The operation unit 131 and the remote controller 5 form a second operation unit 130.

  The storage unit 137 is, for example, a non-volatile storage device such as a hard disk drive or an SSD (Solid State Drive), and is a program executed by the second control unit 150, data processed by the second control unit 150, image data, or the like. Memorize

The third communication unit 141 performs wireless communication with the first communication unit 230 of the smartphone 200. The third communication unit 141 performs wireless communication with the first communication unit 230 via Wi-Fi (registered trademark), for example. The configuration of the smartphone 200 will be described later with reference to FIG. The first communication unit 230 will be described later with reference to FIG.
Specifically, the third communication unit 141 receives the image data from the first communication unit 230. The image data supplied by the smartphone 200 may be still image data or moving image data. Moreover, although the case where the projector 100 and the smartphone 200 are wirelessly connected is described in the embodiment, the projector 100 and the smartphone 200 may be connected by wire.
The smartphone 200 corresponds to an example of an “image transmission device”. The “image transmitting device” may be a reproducing device for an optical disc such as a DVD or a Blu-ray disc, or may be a personal computer.

The third communication unit 141 receives the image signal from the first communication unit 230 of the smartphone 200, and extracts the image data and the synchronization signal included in the received image signal. The image data is data indicating the gradation of each of a plurality of pixels for each color component. The sync signal is a signal indicating a sync timing and includes a horizontal sync signal and a vertical sync signal. The third communication unit 141 outputs the extracted synchronization signal to the second control unit 150 and the image processing unit 145, and outputs the image data to the image processing unit 145. The second control unit 150 determines the execution timing of the process based on the horizontal synchronization signal and the vertical synchronization signal, and controls each unit of the projector 100 based on the determined timing. The image processing unit 145 performs image processing on the image data in synchronization with the horizontal synchronizing signal and the vertical synchronizing signal, and outputs the processed image data to the optical modulator driving unit 122.
The image data acquired from the image signal by the third communication unit 141 corresponds to “image”.

The fourth communication unit 142 performs wireless communication with the second communication unit 240 of the smartphone 200. The fourth communication unit 142 performs wireless communication with the second communication unit 240 via, for example, Bluetooth (registered trademark). Bluetooth (registered trademark) corresponds to an example of "short-range wireless communication".
That is, the third communication unit 141 and the fourth communication unit 142 are configured by different hardware. In other words, the third communication unit 141 and the fourth communication unit 142 execute wireless communication independently of each other. Further, the first communication unit 230 and the second communication unit 240 are configured by different hardware. In other words, the first communication unit 230 and the second communication unit 240 perform wireless communication independently of each other.
Specifically, the fourth communication unit 142 transmits or receives the control information CJ with the second communication unit 240. The control information CJ includes information for determining whether or not to reconnect when the communication between the third communication unit 141 and the first communication unit 230 is disconnected. The control information CJ will be described later in detail with reference to FIG.

  The image processing unit 145 and the frame memory 143 can be configured by, for example, an integrated circuit. The integrated circuit includes an LSI, an ASIC (Application Specific Integrated Circuit), and a PLD (Programmable Logic Device). The PLD includes, for example, an FPGA (Field-Programmable Gate Array). Further, an analog circuit may be included in a part of the configuration of the integrated circuit, or a combination of the processor and the integrated circuit may be used. A combination of a processor and an integrated circuit is called a microcontroller (MCU), SoC (System-on-a-chip), system LSI, chip set, or the like.

  The image processing unit 145 expands the image data input from the third communication unit 141 into the frame memory 143. The frame memory 143 includes a plurality of banks. Each bank has a storage capacity capable of writing one frame of image data. The frame memory 143 is composed of, for example, an SDRAM (Synchronous Dynamic Random Access Memory).

  The image processing unit 145, for example, performs resolution conversion processing or resizing processing, distortion aberration correction, shape correction processing, digital zoom processing, image hue and brightness adjustment, and frame rate conversion on the image data expanded in the frame memory 143. Image processing such as processing is performed.

The second controller 150 includes a memory 151 and a processor 153.
The memory 151 is a storage device that stores a control program and data executed by the processor 153 in a nonvolatile manner, and is configured by a magnetic storage device, a semiconductor storage element such as a flash ROM, or another type of nonvolatile storage device. . Further, the memory 151 may include a RAM forming a work area of the processor 153. The memory 151 stores data processed by the second control unit 150 and a control program executed by the processor 153.

  The processor 153 may be configured by a single processor, or a plurality of processors may function as the processor 153. The processor 153 executes a control program to control each unit of the projector 100. For example, the processor 153 outputs, to the image processing unit 145, an image processing execution instruction corresponding to an operation received by the operation unit 131 or the remote controller 5, and a parameter used for this image processing. The parameters include, for example, geometric correction parameters for correcting geometric distortion of the image projected on the projection surface 105. Further, the processor 153 controls the light source driving unit 121 to control turning on and off of the light source 111, and adjusts the brightness of the light source 111.

<Configuration Common to First and Second Embodiments>
FIG. 2 is a diagram showing a configuration of the display system 1 according to the first embodiment and the second embodiment.
As shown in FIG. 2, the display system 1 includes a projector 100 and a smartphone 200. The smartphone 200 includes a first control unit 210 and a first operation unit 250 in addition to the first communication unit 230 and the second communication unit 240 shown in FIG.
The projector 100 includes a third communication unit 141, a fourth communication unit 142, a second control unit 150, and a second operation unit 130. The second operation unit 130 includes the operation unit 131 and the remote controller 5 shown in FIG.

The first operation unit 250 has a touch panel, and receives an operation from the user via the touch panel. The touch panel has an LCD (Liquid Crystal Display) and a touch sensor.
The first operation unit 250 receives, for example, the connection operation PC 1 to connect the communication with the projector 100. Specifically, the first operation unit 250 receives the connection operation PC 1 to connect the communication between the first communication unit 230 and the third communication unit 141 of the projector 100.
In addition, the first operation unit 250 receives, for example, a stop operation PS1 to stop transmission of image data to the projector 100. Specifically, the first operation unit 250 accepts, to the first communication unit 230, a stop operation PS1 to stop transmission of image data to the third communication unit 141.
Further, the first operation unit 250 receives, for example, a disconnection operation PD1 for disconnecting communication with the projector 100. Specifically, the first operation unit 250 receives a disconnection operation PD1 to disconnect the communication between the first communication unit 230 and the third communication unit 141 of the projector 100.
The first operation unit 250 also receives a change operation PE1 to change the transmission destination of the image data. Specifically, the first operation unit 250 receives a change operation PE1 for changing the transmission destination of the image data from the projector 100 to another device. In this case, the communication between the first communication unit 230 and the third communication unit 141 of the projector 100 is disconnected, the communication between the first communication unit 230 and another device is connected, and the communication between the first communication unit 230 and another device is performed. Image data is transmitted to the device.

The first controller 210 includes a memory 211 and a processor 212.
The memory 211 is a storage device that stores programs and data executed by the processor 212 in a nonvolatile manner, and is configured by a magnetic storage device, a semiconductor storage element such as a flash ROM, or another type of non-volatile storage device. Further, the memory 211 may include a RAM forming a work area of the processor 212. The memory 211 stores data processed by the first control unit 210 and a control program executed by the processor 212.

  The processor 212 may be configured by a single processor, or a plurality of processors may function as the processor 212. The processor 212 executes a control program to control each unit of the smartphone 200.

The first control unit 210 includes an image transmission unit 221, a control information communication unit 222, a first operation reception unit 223, and a first operation storage unit 224.
Specifically, the processor 212 of the first control unit 210 functions as the image transmission unit 221, the control information communication unit 222, and the first operation reception unit 223 by executing the control program. Further, the memory 211 functions as the first operation storage unit 224. The 1st control part 210 is equivalent to an example of a "transmission side control part."

The image transmission unit 221 connects the communication between the first communication unit 230 and the third communication unit 141 of the projector 100, and causes the first communication unit 230 to transmit image data to the third communication unit 141.
The image data indicates, for example, an image displayed on the touch panel of the first operation unit 250. The memory 211 of the smartphone 200 stores, for example, movie image data. Then, the smartphone 200 displays the image data of the movie on the LCD of the touch panel.

The control information communication unit 222 connects the communication between the second communication unit 240 and the fourth communication unit 142 of the projector 100. The control information communication unit 222 also generates control information CJ and causes the second communication unit 240 to transmit the control information CJ to the fourth communication unit 142.
The control information CJ includes information for determining whether or not to reconnect when the communication between the third communication unit 141 and the first communication unit 230 is disconnected. Specifically, the control information CJ includes cause information CJ2 indicating that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250.

For example, in the following cases, the cause information CJ2 indicates that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250.
That is, when the first operation unit 250 receives the stop operation PS1 and the communication between the third communication unit 141 and the first communication unit 230 is disconnected due to the stop operation PS1, the cause information CJ2 is It shows that the disconnection is caused by the operation of the first operation unit 250.
When the first operation unit 250 accepts the disconnection operation PD1 and the communication between the third communication unit 141 and the first communication unit 230 is disconnected due to the disconnection operation PD1, the cause information CJ2 is It shows that the disconnection is caused by the operation of the first operation unit 250.
When the first operation unit 250 receives the change operation PE1 and the communication between the third communication unit 141 and the first communication unit 230 is disconnected due to the change operation PE1, the cause information CJ2 is It shows that the disconnection is caused by the operation of the first operation unit 250.

  The first operation receiving unit 223 receives a user operation on the first operating unit 250. User operations include a connection operation PC1, a stop operation PS1, a disconnection operation PD1, and a change operation PE1.

The first operation storage unit 224 stores the user operation accepted by the first operation accepting unit 223. For example, every time the first operation reception unit 223 receives a user operation, the first operation storage unit 224 stores operation information indicating the user operation received by the first operation reception unit 223. Further, the first operation storage unit 224 stores a predetermined number of operation information. The predetermined number is 100, for example.
When the number of pieces of operation information stored in the first operation storage unit 224 has reached a predetermined number, the first control unit 210 performs the following processing. That is, each time the first operation accepting unit 223 accepts a user operation, the oldest operation information among the operation information stored in the first operation storage unit 224 is deleted, and the user accepted by the first operation accepting unit 223. The operation information indicating the operation is stored in the first operation storage unit 224.

The second operation unit 130 receives, for example, the connection operation PC 2 to connect the communication with the smartphone 200. Specifically, the second operation unit 130 receives the connection operation PC 2 for connecting the communication between the first communication unit 230 and the third communication unit 141 of the smartphone 200.
In addition, the second operation unit 130 receives, for example, a stop operation PS2 to stop displaying the image data from the smartphone 200. Specifically, the second operation unit 130 accepts a stop operation PS2 to the third communication unit 141 to stop receiving the image data from the first communication unit 230.
In addition, the second operation unit 130 receives, for example, a disconnection operation PD2 for disconnecting communication with the smartphone 200. Specifically, the second operation unit 130 receives a disconnection operation PD2 to disconnect communication between the third communication unit 141 and the first communication unit 230 of the smartphone 200.

The second control unit 150 includes an image receiving unit 161, a control information communication unit 162, a second operation receiving unit 163, a second operation storage unit 164, a detecting unit 165, a determining unit 166, and a reconnecting unit 167. With.
Specifically, the processor 153 of the second control unit 150 shown in FIG. 1 executes the control program, so that the image reception unit 161, the control information communication unit 162, the second operation reception unit 163, the detection unit 165, and the determination unit. 166 and the reconnection unit 167. Further, the memory 151 is caused to function as the second operation storage unit 164. The second control unit 150 corresponds to an example of a “reception side control unit”.

  The image receiving unit 161 connects the communication between the third communication unit 141 and the first communication unit 230 of the smartphone 200. Further, the image receiving unit 161 causes the third communication unit 141 to receive the image data transmitted from the first communication unit 230 of the smartphone 200.

The control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142 of the smartphone 200. Further, the control information communication unit 162 causes the fourth communication unit 142 to receive the control information CJ from the control information communication unit 222.
The control information communication unit 162 also generates control information CJ. The control information CJ includes disconnection information CJ1 indicating that the communication between the third communication unit 141 and the first communication unit 230 has been disconnected. The control information communication unit 162 sends the disconnection information CJ1 to the detection unit 165. The control information CJ also includes cause information CJ3 indicating that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the second operation unit 130.

For example, in the following cases, the cause information CJ3 indicates that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the second operation unit 130.
That is, when the second operation unit 130 receives the stop operation PS2 and the communication between the third communication unit 141 and the first communication unit 230 is disconnected due to the stop operation PS2, the cause information CJ3 is It indicates that the disconnection is caused by the operation of the second operation unit 130.
When the second operation unit 130 receives the disconnection operation PD2 and the communication between the third communication unit 141 and the first communication unit 230 is disconnected due to the disconnection operation PD2, the cause information CJ3 is It indicates that the disconnection is caused by the operation of the second operation unit 130.

  The second operation receiving unit 163 receives a user operation on the second operating unit 130. User operations include a connection operation PC2, a stop operation PS2, and a disconnection operation PD2.

The second operation storage unit 164 stores the user operation accepted by the second operation accepting unit 163. For example, every time the second operation receiving unit 163 receives a user operation, the second operation storage unit 164 stores operation information indicating the user operation received by the second operation receiving unit 163. The second operation storage unit 164 also stores a predetermined number of operation information. The predetermined number is 100, for example.
When the number of pieces of operation information stored in the second operation storage unit 164 has reached the predetermined number, the second control unit 150 performs the following processing. That is, each time the second operation receiving unit 163 receives a user operation, the oldest operation information among the operation information stored in the second operation storage unit 164 is deleted, and the user who is received by the second operation receiving unit 163 receives the operation information. The operation information indicating the operation is stored in the second operation storage unit 164.

  The detection unit 165 detects that the communication between the third communication unit 141 and the first communication unit 230 of the smartphone 200 is disconnected. Specifically, when receiving the disconnection information CJ1 from the control information communication unit 162, the detection unit 165 detects that the communication between the third communication unit 141 and the first communication unit 230 has been disconnected.

When the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the determination unit 166 determines whether or not it is “specific disconnection” based on the control information CJ. Specifically, the determination unit 166 controls the control information between the second communication unit 240 and the fourth communication unit 142 when the communication between the third communication unit 141 and the first communication unit 230 is disconnected. It is determined whether or not it is a "specific disconnection" by transmitting or receiving the CJ. The “specific disconnection” indicates that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250 or the operation of the second operation unit 130. .
Specifically, the determination unit 166 determines whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is a specific disconnection based on the cause information CJ2 and the cause information CJ3. To do. The determination unit 166 acquires the cause information CJ2 from the control information communication unit 222 via the control information communication unit 162. The determination unit 166 acquires the cause information CJ3 from the control information communication unit 162.
More specifically, the determination unit 166 determines whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is a specific disconnection as follows.
That is, when the determination unit 166 acquires at least one of the cause information CJ2 and the cause information CJ3, the determination unit 166 determines that the communication between the third communication unit 141 and the first communication unit 230 is disconnected. It is determined to be disconnection. When the determination unit 166 does not acquire the cause information CJ2 and the cause information CJ3, the determination unit 166 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not the specific disconnection. To determine.

When the determination unit 166 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not the specific disconnection, the reconnection unit 167 and the third communication unit 141 and the first communication unit 167. Reconnect communication with 230.
Specifically, the reconnection unit 167 sends, to the image reception unit 161, instruction information to reconnect the communication between the third communication unit 141 and the first communication unit 230 of the smartphone 200. Then, according to this instruction information, the image receiving unit 161 reconnects the communication between the third communication unit 141 and the first communication unit 230 of the smartphone 200.
In addition, the reconnection unit 167 communicates with the third communication unit 141 from the time point when the reconnection process of the communication between the third communication unit 141 and the first communication unit 230 is started to the time point when the reconnection process is completed. An image indicating that communication with the first communication unit 230 is to be reconnected is displayed on the projection unit 110. For example, the reconnection unit 167 causes the projection unit 110 to display a character image “Reconnection is in progress ...”.
Note that the reconnection unit 167 may cause the smartphone 200 to display a character image “Reconnection is in progress ...”.

<First Embodiment>
FIG. 3 is a flowchart showing processing of the display system 1 according to the first embodiment.
As shown in FIG. 3, first, in step SA101, the image transmission unit 221 or the image reception unit 161 connects the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SA103, the image transmission unit 221 starts transmission of image data from the first communication unit 230 to the third communication unit 141.
Next, in step SA105, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
Next, in step SA107, the detection unit 165 determines whether or not the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is detected.

When the detection unit 165 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not detected (NO in step SA107), the process is in the standby state. When the detection unit 165 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is detected (YES in step SA107), the process proceeds to step SA109.
Then, in step SA109, the determination unit 166 determines whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is a “specific disconnection”.
When the determination unit 166 determines that the communication disconnection between the third communication unit 141 and the first communication unit 230 is a specific disconnection (YES in step SA109), the process ends. When the determination unit 166 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not the specific disconnection (NO in step SA109), the process proceeds to step SA111.

Then, in step SA111, the reconnection unit 167 starts the reconnection process of the communication between the third communication unit 141 and the first communication unit 230.
Next, in step SA113, the reconnection unit 167 causes the projection unit 110 to display an image indicating that the communication between the third communication unit 141 and the first communication unit 230 will be reconnected.
Next, in step SA115, the reconnection unit 167 determines whether or not the reconnection process of the communication between the third communication unit 141 and the first communication unit 230 is completed.
When the reconnection unit 167 determines that the reconnection process of the communication between the third communication unit 141 and the first communication unit 230 is not completed (NO in step SA115), the process goes to the standby state. Become. When the reconnection unit 167 determines that the reconnection process of the communication between the third communication unit 141 and the first communication unit 230 is completed (YES in step SA115), the process proceeds to step SA117.
Then, in step SA117, the reconnection unit 167 causes the projection unit 110 to end the display of the image indicating that the communication between the third communication unit 141 and the first communication unit 230 is to be reconnected. Then, the process ends.

As described above with reference to FIG. 3, in the first embodiment, when the communication between the first communication unit 230 and the third communication unit 141 is disconnected, the determination unit 166 performs the following processing. To execute. That is, the determination unit 166 determines whether the disconnection is a specific disconnection based on the control information CJ. When it is determined that it is not the specific disconnection, the reconnection unit 167 reconnects the communication between the first communication unit 230 and the third communication unit 141.
Therefore, when the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is, for example, an unexpected disconnection for the user, between the first communication unit 230 and the third communication unit 141. You can reconnect communications. Therefore, user convenience can be improved.

When the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250 or the operation of the second operation unit 130, the determination unit 166 determines that It is determined that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.
Therefore, when the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the user's operation, the determination unit 166 determines that the communication between the third communication unit 141 and the first communication unit 230 is completed. It can be determined that the communication disconnection is “specific disconnection”. Therefore, it is possible to properly determine whether or not the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is a “specific disconnection”.

Further, when the image transmission unit 221 starts transmitting image data from the first communication unit 230 to the third communication unit 141, the control information communication unit 222 or the control information communication unit 162 becomes the second communication unit 240. The communication with the fourth communication unit 142 is connected.
Therefore, when the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the control information CJ can be transmitted and received between the second communication unit 240 and the fourth communication unit 142. Therefore, the determination unit 166 can appropriately determine whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.

Further, the third communication unit 141 and the fourth communication unit 142 are configured by different hardware, and the first communication unit 230 and the second communication unit 240 are configured by different hardware.
Therefore, when the communication between the third communication unit 141 and the fourth communication unit 142 is disconnected, the control information CJ can be transmitted and received between the first communication unit 230 and the second communication unit 240.

When the determination unit 166 determines that the communication disconnection between the third communication unit 141 and the first communication unit 230 is not a specific disconnection, the reconnection unit 167 causes the first communication unit 230 and the third communication unit to communicate with each other. An image indicating that communication with the unit 141 is reconnected is displayed on the projection unit 110.
Therefore, the user can recognize that the communication between the first communication unit 230 and the third communication unit 141 is reconnected. Therefore, the convenience for the user can be further improved.

In the first embodiment, when the image transmission unit 221 starts transmitting image data from the first communication unit 230 to the third communication unit 141, the control information communication unit 222 or the control information communication unit 162 is The communication between the second communication unit 240 and the fourth communication unit 142 is connected, but not limited to this. When the communication connection between the first communication unit 230 and the third communication unit 141 is established, the control information communication unit 222 or the control information communication unit 162 causes the second communication unit 240 and the fourth communication unit 142 to communicate with each other. Communication between them may be connected.
In this case, even if the transmission of the image data is not started, the communication between the second communication unit 240 and the fourth communication unit 142 can be connected. Therefore, the communication between the second communication unit 240 and the fourth communication unit 142 can be surely connected.

<Second Embodiment>
FIG. 4 is a flowchart showing the processing of the display system 1 according to the second embodiment.
As described with reference to FIG. 3, in the display system 1 according to the first embodiment, when the image transmission unit 221 starts transmitting image data from the first communication unit 230 to the third communication unit 141. , The following processing is executed. That is, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
On the other hand, in the display system 1 according to the second embodiment, when the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the above-described processing is executed, and thus the first embodiment is performed. It is different from the display system 1 according to the embodiment.
Hereinafter, differences from the display system 1 according to the first embodiment will be mainly described, and description of the same processing as that of the display system 1 according to the first embodiment will be omitted.

As shown in FIG. 4, in step SA201, the image transmission unit 221 or the image reception unit 161 connects the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SA203, the image transmission unit 221 starts transmission of image data from the first communication unit 230 to the third communication unit 141.
Next, in step SA205, the detection unit 165 determines whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is detected.
When the detection unit 165 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not detected (NO in step SA205), the process is in a standby state. When the detection unit 165 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is detected (YES in step SA205), the process proceeds to step SA207.
Then, in step SA207, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
After that, steps SA209 to SA217 are executed, but since these processes are the same as the processes executed in steps SA109 to SA117 in FIG. 3, description thereof will be omitted.

As described above with reference to FIG. 4, in the display system 1 according to the second embodiment, the control information communication unit 222 or the control information communication unit 162 executes the following processing. That is, when the detection unit 165 detects the disconnection of the communication between the third communication unit 141 and the first communication unit 230, the control information communication unit 222 or the control information communication unit 162 becomes the second communication unit 240. The communication with the fourth communication unit 142 is connected.
Therefore, when the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the control information CJ can be transmitted and received between the second communication unit 240 and the fourth communication unit 142. Therefore, the determination unit 166 can appropriately determine whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.
Further, as compared with the display system 1 according to the first embodiment, the period during which the communication between the second communication unit 240 and the fourth communication unit 142 is connected can be shortened. Therefore, it is possible to reduce costs such as electric power generated for connecting the second communication unit 240 and the fourth communication unit 142. In addition, it is possible to suppress deterioration of the second communication unit 240 and the fourth communication unit 142 that occur due to the connection between the second communication unit 240 and the fourth communication unit 142.

<Configuration Common to Third and Fourth Embodiments>
FIG. 5: is a figure which shows the structure of the display system 1 which concerns on 3rd Embodiment and 4th Embodiment.
As shown in FIG. 5, the first control unit 210 of the display system 1 according to the third and fourth embodiments includes a detection unit 225, a determination unit 226, and a reconnection unit 227. 2 is different from the display system 1 according to the first and second embodiments shown in FIG.
In addition, the second control unit 150 of the display system 1 according to the third embodiment and the fourth embodiment does not include the detection unit 165, the determination unit 166, and the reconnection unit 167. It is different from the display system 1 according to the first embodiment and the second embodiment.
Hereinafter, differences from the display system 1 according to the first embodiment and the second embodiment shown in FIG. 2 will be described, and regarding the same configuration as the display system 1 according to the first embodiment and the second embodiment, The description is omitted.

As shown in FIG. 5, the first control unit 210 includes an image transmission unit 221, a control information communication unit 222, a first operation reception unit 223, a first operation storage unit 224, a detection unit 225, and a determination unit. 226 and a reconnection unit 227.
Specifically, the processor 212 of the first control unit 210 executes the control program to cause the image transmission unit 221, the control information communication unit 222, the first operation reception unit 223, the detection unit 225, the determination unit 226, and the reconnection. It functions as the unit 227. Further, the memory 211 functions as the first operation storage unit 224.
The second control unit 150 also includes an image receiving unit 161, a control information communication unit 162, a second operation receiving unit 163, and a second operation storage unit 164.
Specifically, the processor 153 of the second control unit 150 shown in FIG. 1 functions as the image reception unit 161, the control information communication unit 162, and the second operation reception unit 163 by executing the control program. Further, the memory 151 is caused to function as the second operation storage unit 164.

The control information communication unit 222 connects the communication between the second communication unit 240 and the fourth communication unit 142. The control information communication unit 222 also communicates control information CJ with the control information communication unit 162. For example, the control information communication unit 222 causes the fourth communication unit 142 to receive the control information CJ from the control information communication unit 162.
The control information communication unit 222 also generates control information CJ. The control information CJ includes disconnection information CJ1 indicating that the communication between the third communication unit 141 and the first communication unit 230 has been disconnected. The control information communication unit 222 sends the disconnection information CJ1 to the detection unit 225. The control information CJ also includes cause information CJ2 indicating that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250.

  The detection unit 225 detects that the communication between the first communication unit 230 and the third communication unit 141 of the projector 100 is disconnected. Specifically, when receiving the disconnection information CJ1 from the control information communication unit 222, the detection unit 225 detects that the communication between the first communication unit 230 and the third communication unit 141 has been disconnected.

When the communication between the first communication unit 230 and the third communication unit 141 is disconnected, the determination unit 226 determines whether it is a “specific disconnection” based on the control information CJ. Specifically, the determination unit 226 controls information between the second communication unit 240 and the fourth communication unit 142 when the communication between the first communication unit 230 and the third communication unit 141 is disconnected. It is determined whether or not it is a "specific disconnection" by transmitting or receiving the CJ.
More specifically, the determination unit 226 determines whether the communication disconnection between the first communication unit 230 and the third communication unit 141 is a specific disconnection based on the cause information CJ2 and the cause information CJ3. judge. The determination unit 226 acquires the cause information CJ3 from the control information communication unit 162 via the control information communication unit 222. The determination unit 226 acquires the cause information CJ2 from the control information communication unit 222.

When the determination unit 226 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is not the specific disconnection, the reconnection unit 227 determines the first communication unit 230 and the third communication unit. Reconnect communication with 141.
Specifically, the reconnection unit 227 sends to the image transmission unit 221 control information CJ for reconnecting the communication between the first communication unit 230 and the third communication unit 141 of the projector 100. . Then, according to the control information CJ, the image transmission unit 221 reconnects the communication between the first communication unit 230 and the third communication unit 141 of the projector 100.
Further, the reconnection unit 227 connects the first communication unit 230 and the first communication unit 230 from the time point when the reconnection process of the communication between the first communication unit 230 and the third communication unit 141 is started to the time point when the reconnection process is completed. An image to reconnect the communication with the third communication unit 141 is displayed on the projection unit 110. For example, the reconnection unit 227 causes the projection unit 110 to display a character image “Reconnection is in progress ...”.
Specifically, the reconnection unit 227 informs the control information communication unit 222 that “reconnection is in progress ...” through the communication between the second communication unit 240 and the fourth communication unit 142. The control information CJ indicating that the character image is displayed on the projection unit 110 is transmitted to the control information communication unit 162. The control information communication unit 162 causes the projection unit 110 to display a character image “Reconnecting ...” according to the received control information CJ.
Note that the reconnection unit 227 may cause the smartphone 200 to display a character image “Reconnection is in progress ...”.

<Third Embodiment>
FIG. 6 is a flowchart showing the processing of the display system 1 according to the third embodiment.
As shown in FIG. 6, first, in step SB101, the image transmission unit 221 or the image reception unit 161 connects the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SB103, the image transmission unit 221 causes the first communication unit 230 to cause the third communication unit 141 to start transmitting image data.
Next, in step SB105, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
Next, in step SB107, the detection unit 225 determines whether or not the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is detected.

When the detection unit 225 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is not detected (NO in step SB107), the process is in the standby state. When the detection unit 225 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is detected (YES in step SB107), the process proceeds to step SB109.
Then, in step SB109, the determination unit 226 determines whether the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is a “specific disconnection”.
When the determination unit 226 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is the specific disconnection (YES in step SB109), the process ends. When the determination unit 226 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is not the specific disconnection (NO in step SB109), the process proceeds to step SB111.

Then, in step SB111, the reconnection unit 227 starts the reconnection process of the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SB113, the reconnection unit 227 causes the projection unit 110 to display an image to reconnect the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SB115, the reconnection unit 227 determines whether or not the reconnection process of the communication between the first communication unit 230 and the third communication unit 141 has been completed.
When the reconnection unit 227 determines that the reconnection process of the communication between the first communication unit 230 and the third communication unit 141 is not completed (NO in step SB115), the process goes to the standby state. Become. When the reconnection unit 227 determines that the reconnection process of the communication between the first communication unit 230 and the third communication unit 141 is completed (YES in step SB115), the process proceeds to step SB117.
Then, in step SB117, the reconnection unit 227 causes the projection unit 110 to end the display of the image indicating that the communication between the first communication unit 230 and the third communication unit 141 is to be reconnected. Then, the process ends.

As described above with reference to FIG. 6, in the third embodiment, when the communication between the first communication unit 230 and the third communication unit 141 is disconnected, the determination unit 226 performs the following processing. To execute. That is, the determination unit 226 determines whether or not it is a specific disconnection based on the control information CJ. When it is determined that it is not the specific disconnection, the reconnection unit 227 reconnects the communication between the first communication unit 230 and the third communication unit 141.
Therefore, when the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is, for example, an unexpected disconnection for the user, between the first communication unit 230 and the third communication unit 141. You can reconnect communications. Therefore, user convenience can be improved.

When the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the first operation unit 250 or the operation of the second operation unit 130, the determination unit 226 determines that It is determined that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.
Therefore, when the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is caused by the operation of the user, the determination unit 226 determines that the communication between the third communication unit 141 and the first communication unit 230 is completed. It can be determined that the communication disconnection is “specific disconnection”. Therefore, it is possible to properly determine whether or not the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is a “specific disconnection”.

Further, when the image transmission unit 221 starts transmitting image data from the first communication unit 230 to the third communication unit 141, the control information communication unit 222 or the control information communication unit 162 becomes the second communication unit 240. The communication with the fourth communication unit 142 is connected.
Therefore, when the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the control information CJ can be transmitted and received between the second communication unit 240 and the fourth communication unit 142. Therefore, the determination unit 226 can appropriately determine whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.

Further, the third communication unit 141 and the fourth communication unit 142 are configured by different hardware, and the first communication unit 230 and the second communication unit 240 are configured by different hardware.
Therefore, when the communication between the third communication unit 141 and the fourth communication unit 142 is disconnected, the control information CJ can be transmitted and received between the first communication unit 230 and the second communication unit 240.

Further, when the determination unit 226 determines that the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is not the specific disconnection, the reconnection unit 227 causes the reconnection unit 227 to communicate with the first communication unit 230 and the third communication unit. An image indicating that communication with the unit 141 is reconnected is displayed on the projection unit 110.
Therefore, the user can recognize that the communication between the first communication unit 230 and the third communication unit 141 is reconnected. Therefore, the convenience for the user can be further improved.

<Fourth Embodiment>
FIG. 7 is a flowchart showing the processing of the display system 1 according to the fourth embodiment.
As described with reference to FIG. 6, in the display system 1 according to the third reference embodiment, the image transmission unit 221 starts transmission of image data from the first communication unit 230 to the third communication unit 141. Sometimes, the following processing is executed. That is, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
On the other hand, in the display system 1 according to the fourth embodiment, when the communication between the first communication unit 230 and the third communication unit 141 is disconnected, the above processing is executed, and thus the third embodiment is performed. It is different from the display system 1 according to the embodiment.
Hereinafter, differences from the display system 1 according to the third embodiment will be mainly described, and description of the same processing as that of the display system 1 according to the third embodiment will be omitted.

As shown in FIG. 7, in step SB201, the image transmitting unit 221 or the image receiving unit 161 connects the communication between the first communication unit 230 and the third communication unit 141.
Next, in step SB203, the image transmission unit 221 causes the first communication unit 230 to cause the third communication unit 141 to start transmitting image data.
Next, in step SB205, the detection unit 225 determines whether or not the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is detected.
When the detection unit 225 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is not detected (NO in step SB205), the process is in the standby state. When the detection unit 225 determines that the disconnection of the communication between the first communication unit 230 and the third communication unit 141 is detected (YES in step SB205), the process proceeds to step SB207.
Then, in step SB207, the control information communication unit 222 or the control information communication unit 162 connects the communication between the second communication unit 240 and the fourth communication unit 142.
After that, steps SB209 to SB217 are executed, but since these processes are the same as the processes executed in steps SB109 to SB117 in FIG. 6, description thereof will be omitted.

As described above with reference to FIG. 7, in the display system 1 according to the fourth embodiment, the control information communication unit 222 or the control information communication unit 162 executes the following processing. That is, when the detection unit 225 detects the disconnection of the communication between the first communication unit 230 and the third communication unit 141, the control information communication unit 222 or the control information communication unit 162 is connected to the second communication unit 240. The communication with the fourth communication unit 142 is connected.
Therefore, when the communication between the third communication unit 141 and the first communication unit 230 is disconnected, the control information CJ can be transmitted and received between the second communication unit 240 and the fourth communication unit 142. Therefore, the determination unit 226 can appropriately determine whether the disconnection of the communication between the third communication unit 141 and the first communication unit 230 is “specific disconnection”.
Further, as compared with the display system 1 according to the third embodiment, the period during which the communication between the second communication unit 240 and the fourth communication unit 142 is connected can be shortened. Therefore, it is possible to reduce costs such as electric power generated for connecting the second communication unit 240 and the fourth communication unit 142. In addition, it is possible to suppress deterioration of the second communication unit 240 and the fourth communication unit 142 that occur due to the connection between the second communication unit 240 and the fourth communication unit 142.

  The above-described embodiment is a preferred embodiment. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above embodiment, the projector 100 is shown as an example of the display device, but the display device of the present invention may be a liquid crystal monitor that displays an image on a liquid crystal display panel, a liquid crystal television, or the like. Further, it may be a device including an organic EL display panel such as a plasma display panel, an OLED (Organic light-emitting diode), an OEL (Organic Electro Luminescence) display, or the like.

  Although the smartphone 200 includes the first operation unit 250 and the projector 100 includes the second operation unit 130 in the above-described embodiment, the present invention is not limited to this. When the smartphone 200 includes the first operation unit 250, the projector 100 does not have to include the second operation unit 130. When the projector 100 includes the second operation unit 130, the smartphone 200 does not have to include the first operation unit 250.

  Further, for example, the processing units of the flowcharts shown in FIGS. 3, 4, 6, and 7 are divided according to the main processing content in order to facilitate understanding of the processing of the projector 100 and the smartphone 200. is there. The method is not limited by the division method or name of the processing units shown in the flowcharts of FIGS. 3, 4, 6, and 7, and more processing units can be divided according to the processing content. It is also possible to divide one processing unit so as to include more processing. Further, the processing order of the above flowchart is not limited to the illustrated example.

  In addition, each functional unit shown in FIGS. 1, 2 and 5 shows a functional configuration, and a specific mounting form is not particularly limited. That is, it is not always necessary to individually implement hardware corresponding to each functional unit, and it is of course possible to implement a function of a plurality of functional units by executing a program by one processor. Further, in the above embodiment, some of the functions realized by software may be realized by hardware, or some of the functions realized by hardware may be realized by software. In addition, the specific detailed configurations of the other parts of the projector 100 can be arbitrarily changed without departing from the spirit of the invention.

  The control method of the display system can be realized by causing a computer included in the display system to execute a program corresponding to the control method of the display system. Further, this program can be recorded in a recording medium that is readable by a computer. A magnetic or optical recording medium or a semiconductor memory device can be used as the recording medium. Specifically, a flexible disk, a HDD (Hard Disk Drive), a CD-ROM (Compact Disk Read Only Memory), a DVD (Digital Versatile Disk), a Blu-ray (registered trademark) Disc, a magneto-optical disk, a flash memory, a card. Examples of the recording medium include a portable recording medium such as a mold recording medium and a fixed recording medium. The recording medium may be a nonvolatile storage device such as a RAM (Random Access Memory), a ROM (Read Only Memory), or an HDD, which is an internal storage device included in the image display device. It is also possible to realize a display system control method by storing a program corresponding to the display device control method in a server device or the like and downloading the program from the server device to the display device.

100 ... Projector (display device), 105 ... Projection surface, 107 ... Bus, 110 ... Projection part (display part), 111 ... Light source, 112 ... Light modulation device, 113 ... Optical unit, 115 ... Liquid crystal panel, 120 ... Drive part , 121 ... Light source driving unit, 122 ... Optical modulation device driving unit, 130 ... Second operating unit, 131 ... Operating unit, 133 ... Remote control light receiving unit, 135 ... Input interface, 137 ... Storage unit, 141 ... Third communication unit, 142 ... Fourth communication section, 143 ... Frame memory, 145 ... Image processing section, 150 ... Second control section (reception side control section), 151 ... Memory, 153 ... Processor, 161, ... Image receiving section, 162 ... Control information communication Section, 163 ... second operation receiving section, 164 ... second operation storage section, 165 ... detection section, 166 ... determination section, 167 ... reconnection section, 200 ... smartphone (image Sending device), 210 ... First control unit (sending side control unit), 211 ... Memory, 212 ... Processor, 221 ... Image sending unit, 222 ... Control information communication unit, 223 ... First operation receiving unit, 224 ... First Operation storage unit, 225 ... Detection unit, 226 ... Judgment unit, 227 ... Reconnection unit, 230 ... First communication unit, 240 ... Second communication unit, 250 ... First operation unit, CJ ... Control information, CJ1 ... Disconnection information , CJ2 ... cause information, CJ3 ... cause information, LSI ... system, PC1 ... connection operation, PC2 ... connection operation, PD1 ... disconnection operation, PD2 ... disconnection operation, PE1 ... change operation, PS1 ... stop operation, PS2 ... stop operation.

Claims (10)

A display system having an image transmitting device for transmitting an image and a display device for displaying the image transmitted by the image transmitting device,
The image transmission device,
A first communication unit and a second communication unit that perform wireless communication independently of each other;
A transmission side control unit that transmits the image by the first communication unit and transmits or receives the display device and control information by the second communication unit,
The display device is
A third communication unit and a fourth communication unit that perform wireless communication independently of each other;
A receiving side control unit for receiving the image transmitted by the first communication unit by the third communication unit, and transmitting or receiving the image transmission device and the control information by the fourth communication unit,
The transmission side control unit or the reception side control unit,
When the communication between the first communication unit and the third communication unit is disconnected, it is determined whether or not it is a specific disconnection based on the control information,
Reconnecting communication between the first communication unit and the third communication unit when it is determined that the specific disconnection is not made,
Display system. At least one of the image transmission device and the display device includes an operation unit that receives an operation,
If the disconnection of communication between the first communication unit and the third communication unit is caused by an operation of the operation unit, the transmission-side control unit or the reception-side control unit determines that the specific disconnection is made. judge,
The display system according to claim 1. The transmission side control unit or the reception side control unit, when the communication connection is established between the first communication unit and the third communication unit, the second communication unit and the fourth communication unit. Connect the communication between,
The display system according to claim 1. The transmission side control unit or the reception side control unit, when the transmission of the image is started between the first communication unit and the third communication unit, the second communication unit and the fourth communication unit. Connect the communication between,
The display system according to claim 1. When the communication between the first communication unit and the third communication unit is cut off, the transmission-side control unit or the reception-side control unit connects between the second communication unit and the fourth communication unit. Connect the communication of,
The display system according to claim 1. The first communication unit and the second communication unit are configured by different hardware,
The third communication unit and the fourth communication unit are configured with different hardware,
The display system according to any one of claims 1 to 5. The display device includes a display unit,
When the receiving side control unit displays the image received by the third communication unit on the display unit and determines that the image is not the specific disconnection, the reception side control unit determines whether the first communication unit and the third communication unit are connected. Displaying an image on the display unit indicating that the communication between the two is reconnected,
The display system according to any one of claims 1 to 6. The second communication unit and the fourth communication unit communicate via short-range wireless communication,
The display system according to any one of claims 1 to 7. A display device that displays an image transmitted by an image transmission device that includes a first communication unit and a second communication unit that perform wireless communication independently of each other.
A third communication unit and a fourth communication unit that perform wireless communication independently of each other;
A receiving side control unit for receiving the image transmitted by the first communication unit by the third communication unit and receiving the image transmission device and control information by the fourth communication unit,
The receiving side control unit,
When the communication between the first communication unit and the third communication unit is disconnected, it is determined whether or not it is a specific disconnection based on the control information,
Reconnecting communication between the first communication unit and the third communication unit when it is determined that the specific disconnection is not made,
Display device. A method of controlling a display system, comprising: an image transmitting device that transmits an image; and a display device that displays the image transmitted by the image transmitting device,
Transmitting the image by a first communication unit included in the image transmitting device;
Receiving the image by a third communication unit included in the display device,
A second communication unit included in the image transmission device and performing wireless communication independently of the first communication unit, or a wireless communication unit included in the display device and independent of the third communication unit. Transmitting control information by a fourth communication unit that executes communication,
Receiving the control information by the second communication unit or the fourth communication unit,
When communication between the first communication unit and the third communication unit is disconnected, it is determined whether the specific disconnection based on the control information,
Reconnecting the communication between the first communication unit and the third communication unit when it is determined that the specific disconnection has not occurred.
Display system control method.

Images