JP2015172684A - Display device control method of display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of allowing a user to control by selecting a desired display device from plural display devices with a simple configuration and processing.SOLUTION: The display device is a display device which may be commonly used by other display devices, which includes: a display section; a command detection section that detects a command transmitted by means of at least one of sound, visible or invisible electromagnetic waves; and a command processing section. When the command detection section detects a first command, the display section displays a piece of identification information. After the display section displays the identification information, when the command detection section detects a second command corresponding to the identification information, the command processing section carries out a predetermined processing or waits for a third command.

Description

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

  In the case of controlling a plurality of display units from one controller, a method is disclosed in which an identification ID is displayed and a desired one display unit is controlled by establishing a connection using the identification ID (Patent Literature). 1). In the display system described in Patent Document 1, different identifiers are assigned to a plurality of televisions from the portable terminal by performing individual communication (that is, specifying communication partners) between the portable terminal and the plurality of televisions. Are given respectively. Then, the user refers to the identifier displayed on the television, and the user selects a desired identifier on the portable terminal, whereby the connection is established between the portable terminal and one television.

JP 2011-254238 A

  In said display system, different identification ID is provided with respect to each display unit by communicating separately between a controller and each display unit. That is, when assigning an identifier, it is necessary to perform communication between the controller and the plurality of display units individually. Therefore, there is a problem that the cost may increase due to the complication of the configuration for communication, or the processing time may increase as compared with the case where one-to-many communication is performed at one time.

  Accordingly, the present invention has been made in consideration of the above-described circumstances, and a display device and a display that allow a user to select and control a desired display device from a plurality of display devices with a simple configuration and processing. An apparatus control method is provided.

One embodiment of the present invention is a display device that can be used with another display device, and detects a command propagated by at least one of a display unit, sound, and visible or invisible electromagnetic waves. And a command processing unit, and the display unit displays identification information in response to detection of the first command by the command detection unit, and the display unit displays the identification information. When the command detection unit detects a second command corresponding to the identification information, the command processing unit is a display device that performs a predetermined process or waits for a third command.
According to this configuration, the user can select a desired display device by detecting the command by the command detection unit and displaying the identification information by the display unit. Therefore, the configuration and processing of the display device can be easily simplified.

One aspect of the present invention further includes a random ID generation unit that randomly outputs the identification information, and the display unit outputs the random number in response to the command detection unit detecting the first command. A configuration may be used that displays the identified information.
According to this configuration, there is no need to set different identification information for each display device in advance.

One embodiment of the present invention further includes a storage unit that stores the identification information, and the display unit is stored in the storage unit in response to the command detection unit detecting the first command. A configuration for displaying the identification information may be used.
According to this configuration, it is possible to avoid displaying the same identification information on different display devices.

One embodiment of the present invention further includes an information storage unit that stores information indicating whether or not the information is used with the other display device, and indicates that the information is used with the other display device. In the case where, in response to the command detection unit detecting a first command, the display unit displays identification information and does not indicate that the information is being used with the other display device, A configuration may be used in which the command processing unit performs predetermined processing or waits for a third command in response to detection of the first command by the command detection unit.
According to this configuration, it is possible to omit the process for displaying the identification information when not used with other display devices.

One embodiment of the present invention is a display device control method that can be used with another display device, the display device including at least one of a display portion, sound, and visible or invisible electromagnetic waves. A command detection unit for detecting a propagated command; and a command processing unit, wherein the display unit displays identification information in response to detection of the first command by the command detection unit, After the display unit displays the identification information, when the command detection unit detects a second command corresponding to the identification information, the command processing unit performs a predetermined process, or a third It is a control method that waits for a command.
According to this configuration, the user can select a desired display device by detecting the command by the command detection unit and displaying the identification information by the display unit. Therefore, the configuration and processing of the display device can be easily simplified.

  As described above, the display device can easily simplify the configuration and processing.

It is a block diagram for demonstrating the structural example of the display apparatus 1 which concerns on 1st Embodiment. It is explanatory drawing for demonstrating the example of attachment in the case of using both the display apparatuses 1 of FIG. It is a side view which shows the connector 11 of FIG. 1, and the duct 41 of FIG. It is explanatory drawing for demonstrating the structural example of the light source part 16 grade | etc., Of FIG. It is explanatory drawing for demonstrating the example of a connection of the power supply system in the case of using both the display apparatuses 1 of FIG. It is explanatory drawing for demonstrating the usage example in the case of using together the display apparatus 1 of FIG. 3 is a flowchart for explaining an operation example of the display device 1 of FIG. 1. It is a block diagram for demonstrating the structural example of the display apparatus 1a which concerns on 2nd Embodiment. It is a flowchart for demonstrating the operation example of the display apparatus 1a of FIG. It is a block diagram for demonstrating the structural example of the display apparatus 1b which concerns on 3rd Embodiment. It is explanatory drawing for demonstrating the operation example of the display apparatus 1b of FIG. 11 is a flowchart for explaining an operation example of the display device 1b of FIG. It is a block diagram for demonstrating the structural example of the display apparatus 1c which concerns on 4th Embodiment. It is a block diagram for demonstrating the structural example of the remote controller (remote control) which transmits a command signal with respect to the display apparatus 1c of FIG. It is a flowchart for demonstrating the operation example of the display apparatus 1c of FIG. It is a flowchart for demonstrating 5th Embodiment.

<First Embodiment>
A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram for explaining a configuration example of the display device 1 according to the first embodiment. The display device 1 of the first embodiment is configured as a projector that can be used with other projectors. FIG. 2 is an explanatory diagram for explaining an installation example when the display device 1 is used together with another display device 1. The display device of the present invention is not limited to a projector, and can be, for example, a display having a display panel, or both a projector and a display.

  The display device 1 shown in FIG. 1 includes a connector 11, a power supply unit 12, a power supply line 13, a switch 14, a light source drive unit 15, a light source unit 16, a light valve 17, a projection lens 18, and an image. A processing unit 19 and a light valve driving unit 20 are provided. The display device 1 illustrated in FIG. 1 further includes a storage device 21, a control unit 22, a bus 23, a power line 24, a signal line 25, an audio processing unit 31, and a microphone 32.

  The connector 11 is a connection part that is mechanically supported and electrically connected to a duct 41 fixed to a ceiling or a wall as shown in FIG. The duct 41 shown in FIG. 2 is a bowl-shaped power supply body called a lighting duct, a lighting rail, or the like, and corresponds to, for example, a luminaire duct, a power supply duct, or a common power supply duct according to JIS C8366 standard. A lighting fixture, an adapter for supplying power, and the like can be attached to the duct 41. In the side view of FIG. 3, a cross section of the duct 41 is illustrated for convenience of understanding, but the end of the duct 41 may or may not be opened. The duct 41 is installed on a ceiling surface or a wall surface, is connected to a commercial power source (not shown), and supplies power to the display device 1 through the connector 11.

  As shown in FIG. 2, the connector 11 is configured to be connectable to the duct 41 on the side surface of the housing of the display device 1. As shown in FIGS. 2 and 3, the connector 11 has a protruding shape that protrudes upward from the side surface of the housing of the display device 1, and a pair of contact conductors 111, 111 and a pair of contacts 11 are provided on the side surface of the connector 11. The locking pieces 112 and 112 are erected. Each of the locking pieces 112 and 112 is formed in a flat plate shape and protrudes from the connector 11 in opposite directions. The contact conductors 111 and 111 are configured by forming copper or other metal into a flat plate shape, and the contact conductors 111 and 111 protrude from the connector 11 in opposite directions.

  The duct 41 has an opening 411 extending along the longitudinal shape in a hollow main body having a long shape, and supports the connector 11 and the like inserted from the opening 411. When the duct 41 is fixed to the mounting surface 2 of the ceiling, the opening 411 opens downward, and the display device 1 and the like can be attached and suspended from below. Further, the duct 41 may be fixed to the wall surface. In this case, the opening 411 opens in the horizontal direction, and the display device 1 or the like can be attached and fixed from the side.

  The duct 41 includes a pair of conductors 412 and 412 extending along the longitudinal direction of the main body of the duct 41. The conductors 412 and 412 are made of copper or other metal formed into a rod shape or a tape shape, and are electrically connected to a commercial power source. The conductors 412 and 412 are connected to, for example, a commercial 100V two-pole AC power source, and one conductor 412 serves as a ground electrode, and the other conductor 412 serves as a non-ground electrode. Further, the duct 41 has grooves 413 and 413 that lock members wider than the opening 411. The grooves 413 and 413 are arranged on both sides of the opening 411 inside the duct 41, and an object fitted into the grooves 413 and 413 is supported by the duct 41.

  When the display device 1 is attached to the duct 41, the connector 11 is inserted into the opening 411. At this time, the connector 11 is inserted into the opening 411 such that the locking pieces 112 and 112 and the contact conductors 111 and 111 are oriented along the longitudinal direction of the duct 41. If the locking pieces 112 and 112 and the contact conductors 111 and 111 enter the inside of the duct 41 and then the connector 11 is rotated 90 degrees, the connector 11 is connected to the duct 41. By rotating the connector 11, the contact conductors 111 and 111 come into contact with the conductors 412 and 412 of the duct 41 to conduct electricity, and power can be supplied from the conductors 412 and 412 to the contact conductors 111 and 111. Further, since the locking pieces 112 and 112 are fitted in the grooves 413 and 413, the connector 11 is fixed to the duct 41 via the locking pieces 112 and 112. In this state, the connector 11 does not move in the longitudinal direction of the duct 41.

  On the other hand, the power supply unit 12 shown in FIG. The power supply unit 12 supplies DC power of a low voltage such as 3.3 V and 5 V to each part of the control system in the display device 1 through the power supply line 24 and the like. Further, the power supply unit 12 can supply higher voltage power, and for example, supplies a 12 V DC current to the light source unit 16, the light source drive unit 15, and the like via the power supply line 13. In the configuration shown in FIG. 1, the power supply line 13 is connected to the light source driving unit 15 via the switch 14. The switch 14 is controlled to be turned on or off by a predetermined control signal input via the signal line 25. The switch 14 may be provided in the power supply unit 12.

  The light source drive unit 15 outputs a drive signal to the light source unit 16 to light up under the control of the control unit 22.

  For example, as illustrated in FIG. 4, the light source unit 16 includes an LED (light emitting diode) 161 </ b> R, an LED 161 </ b> G, an LED 161 </ b> B, and an irradiation optical system 162. The LED 161R is an LED corresponding to R (red light), the LED 161G is an LED corresponding to G (green light), and the LED 161B is an LED corresponding to (blue light).

  The light source driving unit 15 outputs a pulse for turning on the LEDs 161R, G, and B of the light source unit 16, and the LEDs 161R, G, and B are repeatedly turned on and off at the frequency of the input pulse. The light source driving unit 15 can adjust the light emission luminance of each LED by changing the frequency of pulses output to the LEDs 161R, G, and B.

  The light source unit 16 may include LEDs corresponding to four or more different element colors, may include LEDs corresponding to two different element colors, and includes a single LED that emits white light. There may be. The light source unit 16 may include an organic or inorganic semiconductor laser or an organic EL (electroluminescent) element instead of the LED, and includes a phosphor using the LED or laser as an excitation light source. May be. Furthermore, the light source unit 16 may include a high-pressure mercury lamp or a xenon lamp.

  The irradiation optical system 162 collects the light emitted from the LEDs 161R, G, and B and irradiates the light valve 17 as parallel light. The irradiation optical system 162 synthesizes optical paths of light (light beams) from each of the three LEDs 161R, G, and B using a dichroic prism. The light passing through the dichroic prism is converted into parallel light by an integrator including a fly-eye lens. The parallel light is irradiated to the light valve 17 through the polarization conversion element.

  The light valve 17 is a single-plate transmissive liquid crystal light valve. The liquid crystal light valve of the present embodiment includes a pair of polarizing plates and a liquid crystal panel positioned therebetween. The light valve driving unit 20 drives the liquid crystal panel of the light valve 17 to write an image. The LEDs 161R, G, and B and the light valve 17 are driven by an RGB sequential method, that is, a color sequential method. Therefore, the display device 1 can project a full color image. The light (image light) modulated by the light valve 17 is projected toward a projection target surface such as a wall or a screen through the projection lens 18.

  Under the control of the control unit 22, the image processing unit 19 reads out the image data to be projected, performs various processes such as resolution conversion, color tone correction, and keystone distortion correction, and processes the processed image data in units of frames. 20 is output. The light valve driving unit 20 outputs a driving signal for driving the liquid crystal panel to the light valve 17 in accordance with image data for each frame input from the image processing unit 19 and a control signal input from the control unit 22. An image is drawn on the liquid crystal panel by the driving signal output from the light valve driving unit 20, and the light emitted from the LEDs 161R, G, and B is modulated. The image processing unit 19 outputs a control signal for adjusting the light emission state of the LEDs 161 R, G, and B to the light source driving unit 15.

  The storage device 21 is a storage device configured using a flash memory or the like. The storage device 21 may be a detachable device such as a memory card, or may be a semi-fixed or fixed built-in device such as an SSD (Solid State Drive), or both. it can. The storage device 21 stores various data in a nonvolatile manner in accordance with the control of the control unit 22. The storage device 21 stores in advance image data constituting a video to be displayed, image data corresponding to identification information described later, and the like.

  The control unit 22 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a nonvolatile memory, a system controller, and other peripheral circuits (not shown). Operating software and application software are stored in the non-volatile memory, and BIOS (Basic Input / Output System) is stored in the ROM. The control unit 22 executes the BIOS stored in the ROM, the operating software and application software stored in the nonvolatile memory by the CPU, and controls each unit. A storage device 21, a light source driving unit 15, an image processing unit 19, a light valve driving unit 20, an audio processing unit 31, and the like are connected to the control unit 22 via a bus 23.

  The control unit 22 reads out image data from the storage device 21, controls the light source driving unit 15, the image processing unit 19, the light valve driving unit 20, and the like, and performs control to project an image based on the read image data. In addition, the control unit 22 outputs a predetermined control signal to the switch 14 via the signal line 25, and performs on / off control of the power supplied to the light source driving unit 15 and the light source unit 16.

  The voice processing unit 31 receives an electric signal that is a result of converting the sound signal collected by the microphone 32, performs voice recognition processing, and determines whether the input voice matches a predetermined voice command. The result is output to the control unit 22. The voice processing unit 31 outputs information indicating whether or not the input voice signal matches a pre-registered word (for example, “selection”, “confirmation”, “0” to “9”, etc.). To do. In addition, the voice processing unit 31 also outputs information indicating which word is matched when matching. Note that the voice processing unit 31 may determine a specific “sound” instead of “voice” as a predetermined voice command. Hereinafter, although “voice” will be described as an example, a specific “sound” can be used for the voice command in the same manner as “voice”.

  The microphone 32 is a microphone having a certain directivity, and is installed downward in the housing of the display device 1, for example.

  Next, a usage example of the display device 1 described with reference to FIGS. 1 to 4 will be described with reference to FIGS. 5 and 6. FIG. 5 is a diagram illustrating a connection example of the power supply systems of the plurality of display devices 1. FIG. 5 shows a connection example when three display devices 1 are attached to the duct 41. 5 and 6, the same reference numerals are used for the same components as those shown in FIGS. 1 to 4. In the example shown in FIG. 5, the duct 41 is connected to the commercial power source 51 via a manual power switch 52 installed on a wall surface or the like. Moreover, as shown in FIG. 6, the three display apparatuses 1 are installed along with facing the wall surface. Note that the number of display devices 1 used together is not limited to three. The power switch 52 may be remotely operable using a remote controller or the like.

  As shown in FIG. 5, each display device 1 is connected to a duct 41 via each connector 11. Accordingly, the commercial power supply 51 is simultaneously connected to each display device 1 by turning on the power switch 52. When connected to the commercial power supply 51, the power supply unit 12 in each display device 1 supplies power to the control unit 22 and the like. The control unit 22 starts an operation of a predetermined program by a power-on reset. For example, the control unit 22 performs predetermined initialization processing on each unit, and then turns on the switch 14 and performs control to input a predetermined power source to the light source driving unit 15 and the light source unit 16. In this state, the three display devices 1 project predetermined images 101, 102, and 103 on the wall surfaces, respectively (FIG. 6A). The images 101, 102, and 103 are image data that each display device 1 holds in the storage device 21. Each display device 1 displays the held image data when the power switch 52 is turned on. When each display device 1 turns off the power switch 52, the commercial power input to each display device 1 is simultaneously cut off, and each display device 1 stops its operation. As described above, even when a plurality of display devices 1 are used, they can be turned on / off by, for example, one power switch 52 on the wall surface.

  However, when the power switch 52 is turned on and the images 101, 102, and 103 are displayed on the three display devices 1 as shown in FIG. 6A, for example, only one or two display devices 1 are displayed. There is a case where it is desired to turn off the power of the camera (that is, turn off the video display). FIG. 6B shows a state where the middle display device 1 is turned off. For example, it may be necessary to temporarily place another exhibit and return to the original location. Therefore, the display device 1 has a function of turning off the power supplied to the light source driving unit 15 and the light source unit 16 individually under the control of the control unit 22. This function will be described with reference to the flowchart shown in FIG.

  First, when the power switch 52 is turned on, in the display device 1, the power supply unit 12 supplies power to each unit, and the control unit 22 turns on the switch 14 and controls each unit to start image projection (step S <b> 11). . Next, the control part 22 confirms the output of the audio | voice processing part 31, and judges whether identification information is displayed based on the output of the audio | voice processing part 31 (step S12). Here, the identification information is information for uniquely identifying each display device 1 from the plurality of display devices 1 and includes information that can be expressed by words such as numbers, colors, and characters, and can be uttered by the user. Information. In the present embodiment, when the user issues a voice command of the word “select”, the control unit 22 determines in step S12 that an instruction to display identification information has been given (“Yes” in step S12). . In this case, it is assumed that the user approaches the desired display device 1 to be powered off and pronounces the word “select”, which is a specific voice command in this example. Then, the determination result is “Yes” in step S12, and the control unit 22 performs the process of step S13.

  In step S13, the control unit 22 randomly generates identification information (step S13). In the present embodiment, generating randomly means not only using a strict random number, but, for example, using a pseudo-random function or the like to generate a certain number of digits with variation. It shall be.

  Next, the control unit 22 controls the light source unit 16, the light valve 17 and the like so as to project an image corresponding to the identification information generated in step S13 (step S14). In step S <b> 14, based on the identification information generated in step S <b> 14, the control unit 22 selects a specific video, an image representing a number, or a specific color video corresponding to the identification information from the video stored in the storage device 21. The light source unit 16, the light valve 17, and the like are controlled so as to display and the like. Note that in step S14, the control unit 22 may control the light source unit 16, the light valve 17, and the like so as to display a description of the next operation along with the identification information.

  Next, the user refers to the video corresponding to the displayed identification information and inputs the next voice command or waits for a certain time without inputting the voice command. That is, when only one or a plurality of display devices 1 that want to perform a predetermined process (in this case, want to turn off the power) display a video corresponding to the identification information, the user pronounces the word “confirm” . Here, the “confirm” command is a voice command that is input when all the display devices 1 that have performed the identification display match those intended.

  In addition, when the unintended display device 1 is included in the plurality of display devices 1 that have performed the video display corresponding to the identification information, the user can make a sound corresponding to the identification information displayed on the intended display device 1. Enter the command. For example, when two display devices 1 display numbers “1” and “5” as images corresponding to the identification information, respectively, predetermined processing is performed on the display devices 1 displaying “1”. The user pronounces the word “1”. Further, for example, when the three display devices 1 display the numbers “1”, “5”, and “12” as the images corresponding to the identification information, respectively, the display that displays “1”. When the device 1 and the display device 1 displaying “5” want to perform predetermined processing, the user continuously pronounces the word “1” and the word “5” at predetermined intervals. .

  In addition, when the intended display device 1 is not included in the plurality of display devices 1 that performed the video display corresponding to the identification information, the user does not input the voice command for a certain period of time and again in step S11. When the user waits until the predetermined video display is performed or when the user performs a gesture meaning “retract (reset)”, the control unit 22 proceeds to the step of performing the predetermined video display in step S301 according to the gesture. Transition.

  Next, after displaying the video corresponding to the identification information in step S14, the control unit 22 determines whether “confirmation” or a word corresponding to the identification information is input by voice within a predetermined time (step S15). . Here, the word corresponding to the identification information is a word representing the displayed number, a word representing the displayed color, or a specific image (for example, an image of an animal, plant, food, landscape, artifact, etc.). A word representing a name. If the sound input corresponding to the video corresponding to the identification information displayed by the device is not made within the predetermined time, the control unit 22 determines that the word corresponding to the “confirmation” or the identification information is not inputted by voice within the predetermined time. Then, the process returns to step S11 to perform a predetermined video display (from “No” in step S15 to step S11). On the other hand, if a sound input corresponding to the video corresponding to the identification information displayed by the device is made within a predetermined time, the control unit 22 determines that the word corresponding to the “confirmation” or the identification information is input by voice within the predetermined time. Judgment is made, and the process proceeds to step S16 (from “Yes” in step S15 to step S16).

  In step S <b> 16, the control unit 22 performs control (acceptance display) to display a video indicating that the voice command for selecting the own device is received, and accepts the next voice command specifying the content of the predetermined process. A transition is made to a standby mode (step S16). In step S <b> 16, for example, the control unit 22 turns on / off the screen a plurality of times, displays a wording such as “OK”, or displays a predetermined icon or the like. And the control part 22 transfers to command reception mode while performing reception display.

  Next, after performing the acceptance display, the control unit 22 determines whether or not a voice command designating processing (in this case, a voice command instructing power off) is input within a certain time (step S17). ). Here, the user transmits the command with a sound such as “OFF”, or transmits the command by means of emitting a specific sound such as clapping hands (applause), thereby supplying power to the desired display device 1. To turn off. When a voice command (in this case, a voice command for instructing power-off) is input within a predetermined time after the control unit 22 performs reception display, the control unit 22 instructs to turn off the power. It is determined that a voice command has been input (“Yes” in step S17). On the other hand, if the voice command designating a predetermined process (in this case, the voice command instructing to turn off the power) is not input within a predetermined time after the control unit 22 performs the reception display, the control unit 22 turns off the power. Is determined to have not been input, and the process returns to step S11 to display a predetermined video (from “No” in step S17 to step S11).

  In step S17, when the control unit 22 determines that a voice command for instructing power-off is input within a predetermined time, the control unit 22 outputs a predetermined signal to the signal line 25, turns off the switch 14, and turns off the power supply unit. The power supply from 12 to the light source drive unit 15 and the light source unit 16 is cut off (from “Yes” in step S17 to step S18). Here, the power supply of the desired display device 1 can be turned off. The processing is completed by this series of sequences.

  According to the present embodiment, even if a plurality of adjacent display devices 1 recognize a certain voice command “selection” in step S12, the user again uses a voice command in step S15, and the plurality of projectors. By selecting one desired (or a plurality of) display devices 1 from the above, it is possible to avoid that the undesired display devices 1 can accept commands in step S16.

  Further, according to the present embodiment, when the display devices 1 such as a plurality of projectors are installed on the wall surface in random order, it is difficult to set a unique ID (identification information) for each display device 1 at the time of installation. However, there is no problem because the identification information is automatically generated. In other words, it can be used without setting a unique ID at the time of attachment, and convenience at the time of user installation can be improved.

  In the usage mode described with reference to FIGS. 5 and 6, the power switch (that is, the switch 14) of the light source unit 16 of each display device 1 is normally ON. Therefore, the entire wall is turned ON / OFF at once by the power switch 52 on the wall surface. However, sometimes there are times when some switches of the display device 1 must be turned off. For example, you may need to temporarily set up another exhibit there and return to it. In that case, it is necessary to turn on / off the power individually. However, in the conventional technology, depending on the user's usage environment, a special device such as a super-directional remote control is used, or a special ID assignment means is provided. Or removing individual projectors on a step or the like. On the other hand, in this embodiment, it is possible to easily turn on / off the power of the light source unit 16 or the like of any display device 1 (or turn on / off video display) from among the plurality of display devices 1.

  Further, for example, in a normal remote control operation in the case where the remote control is installed near the ceiling surface, signal crossing occurs, correspondence between a plurality of remote controls and a plurality of display devices 1 is stored, and each display device is stored. There arises a problem that one identification information must be stored. On the other hand, in the configuration of the present embodiment, the user approaches the desired display device 1 and inputs a predetermined voice command, confirms the video corresponding to the displayed identification information, and confirms the voice command or the meaning of confirmation. A desired display device 1 can be selected by inputting a voice command or the like corresponding to predetermined identification information. Thus, the above problems can be solved.

  Further, the display device 1 detects a command using the microphone 32 and the sound processing unit 31 and the like (one configuration example of the command detection unit of the present invention), the light source unit 16, the light valve 17 and the like (the display unit of the present invention). By displaying the identification information using the example of one configuration, the user can select a desired display device. Therefore, the configuration and processing in the display device 1 can be easily simplified.

  In the configuration of the present embodiment, the same identification information may be generated rarely on the plurality of display devices 1, but in that case, the user can generate the identification information at random again after a certain period of time. The state where the identification information is the same can be avoided.

Further, in the configuration of the present embodiment, when one user sends a voice command to a plurality of display devices 1, the command may reach other than the intended display device 1 (that is, not intended). If the distance to the display device 1 is long, it will not reach), but it is possible to prevent erroneous selection by inputting a voice command for confirmation or selection.
The form using the voice command is effective when the user can approach the display device 1 to the extent that the user's voice reaches the display device 1.

<Second Embodiment>
Hereinafter, a second embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a block diagram for explaining a configuration example of the display device 1a according to the second embodiment. The display device 1a of the second embodiment is configured as a projector that can be used with other projectors. Except for what is specifically described, the mode of use when used with another display device 1a is the same as that of the display device 1 described with reference to FIGS. In FIG. 8, the same components as those shown in FIG. FIG. 9 is a flowchart for explaining an operation example when the display device 1a is used together with another display device 1a.

  The display device 1a of the second embodiment shown in FIG. 8 is different from the display device 1 of the first embodiment shown in FIG. 1 in that an ID setting unit 33 is further provided. The configuration other than the ID setting unit 33 is the same except that the processing of the control unit 22 is partially different. In the display device 1 according to the first embodiment, the control unit 22 performs a process of randomly generating identification information. On the other hand, in the display device 1a of the second embodiment, the identification information (that is, ID) is set in advance before the installation of the display device 1a such as a projector.

  The ID setting unit 33 can be configured using, for example, a dip switch including an on / off switch for a plurality of bits. Alternatively, a unique number such as a manufacturing number of the display device 1a can be used as the ID for setting the ID. In this case, the ID setting unit 33 can be configured as a part of a program executed by the control unit 22. Furthermore, an arbitrary name, a nickname, or the like can be recorded as an ID by inputting a voice signal. The ID set in advance is stored in a predetermined storage area (storage unit) in the storage device 21. Or you may make it read from a dip switch etc. whenever it refers. In this case, a dip switch or the like can be considered as an ID storage unit.

  In the case where the ID is set in advance before the installation of the display device 1a, the ID of each projector registered in advance for the plurality of display devices 1a must be remembered in some way, but the user always remembers it. It is difficult to operate and record. In addition, it is not realistic to set the serial number and the like written on the housing in consideration of the installation environment while confirming them individually. Therefore, it is desirable to use the following processing sequence.

  That is, as shown in FIG. 9, after the user turns on the power (that is, the power switch 52 in FIG. 5 is turned on), the display device 1a displays a predetermined image in the same manner as in step S11 in FIG. Step S21). Thereafter, the control unit 22 determines whether or not a predetermined voice command indicating a word such as “ID display” has been input (step S22). When the control unit 22 determines in step S22 that a predetermined voice command indicating a word such as “ID display” has been input, the control unit 22 reads the ID registered in advance from the storage device 21 or the like, and reads the read ID. The information is displayed by a predetermined method (“Yes” in step S22 to step S23). For example, there is a method of displaying the ID superimposed on a part of the video that has already been displayed, or stopping the video display and displaying the ID larger.

  Next, the control unit 22 determines whether or not a voice command indicating “confirmation” or a voice command corresponding to the displayed ID is input within a predetermined time after the ID display in step S23 ( Step S24). Here, for example, when the user confirms the ID display state of each display device 1a and only the desired display device 1a displays the ID, it is pronounced as “confirmation” or the ID is input by voice. The selection state can be confirmed. Alternatively, when the desired display device 1a and the unintended display device 1a are mixed and performing ID display, the target display device 1a is selected by voice input of the ID of the desired display device 1a. To do.

  When a voice command “confirm” is input in step S24 or a voice command corresponding to the ID of the own device is input, the control unit 22 turns off the switch 14 because the determination condition in step S24 is satisfied. The video display is then stopped (“Yes” in step S24 to step S25). The processing is completed by this series of sequences.

In the process described with reference to FIG. 9, the process of step S <b> 16 shown in FIG. 7, that is, the reception display and the process of waiting in the command reception mode are omitted. Therefore, only the process of turning off the power (that is, the process of stopping the video display) can be performed on the display device 1a as the predetermined process. However, a process corresponding to steps S16 and S17 of FIG. 7 can be added to the process of FIG. 9 to select a predetermined process. In addition, according to the present embodiment, it is possible to avoid displaying the same ID on different display devices 1a by appropriately registering the ID in advance.
In the second embodiment, as in the first embodiment, the form using the voice command is effective when the user can approach the display device 1a to the extent that the user's voice reaches the display device 1a. It is.

<Third Embodiment>
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a block diagram for explaining a configuration example of the display device 1b according to the third embodiment. The display device 1b of the third embodiment is configured as a projector that can be used with other projectors. The usage mode with the other display device 1b is the same as that of the display device 1 described with reference to FIG. 5 and FIG. In FIG. 10, the same components as those shown in FIG. FIG. 11 is a schematic diagram for explaining an operation example of the display device 1b. FIG. 12 is a flowchart for explaining an operation example when the display device 1b is used together with another display device 1b.

  The display device 1b according to the third embodiment shown in FIG. 10 is different from the display device 1 according to the first embodiment shown in FIG. 1 in that a captured image processing unit 34 and a camera 35 are provided. Yes. In addition, in the display apparatus 1b of FIG. 10, although description of the audio | voice processing part 31 and the microphone 32 (FIG. 8) is abbreviate | omitted, you may provide the audio | voice processing part 31 and the microphone 32 as it is.

  In the display device 1b of FIG. 10, the camera 35 is an image sensor that captures a scene including the optical path of the light beam projected by the light source unit 16, the light valve 17, and the projection lens 18 (the optical path 300 of FIG. 11). Then, the captured image processing unit 34 controls the operation of the camera 35, performs predetermined image recognition processing on the image captured by the camera 35, and the user included in the captured image (the user in FIG. 11). 200) is recognized, and information indicating the recognition result is output. Here, as gestures, there are gestures that can be operated by the user such as shaking hands, shaking vertically, drawing a circle, and the like.

  Whereas the display device 1 of the first embodiment and the display device 1a of the second embodiment input commands by voice command input, in the display device 1b of the third embodiment, the user performs a specific gesture. Command input. Therefore, in the display device 1b, an image on the front surface of the display device 1b is acquired by an imaging unit such as a camera having an imaging element such as a CCD or a CMOS. Then, when the user enters the imaging range of the camera 35 and performs a specific gesture, a predetermined command can be input to the display device 1b.

  As shown in FIG. 12, in the display device 1b of FIG. 10, first, when the power switch 52 is turned on, the power supply unit 12 supplies power to each unit, and the control unit 22 turns on the switch 14 and controls each unit. Video projection is started (step S301). Next, the control unit 22 controls the camera 35 via the captured image processing unit 34 to acquire an image, and performs image recognition processing on the image acquired by the captured image processing unit 34 (step S302). Next, the control unit 22 determines whether or not to display identification information based on the output of the captured image processing unit 34 (step S303). In the present embodiment, when the user performs a gesture meaning “selection”, the control unit 22 determines to display the identification information in step S303 (“Yes” in step S303). In this case, it is assumed that the user enters the imaging range of the camera 35 of the desired display device 1b whose power is to be turned off, and performs a specific gesture meaning “select”, which is a specific command in this example. Then, the determination result is “Yes” in step S303, and the control unit 22 performs the process of step S304.

  In step S304, similarly to step S13 in FIG. 7, the control unit 22 randomly generates identification information (step S304). Next, the control unit 22 controls the light source unit 16, the light valve 17 and the like so as to project an image corresponding to the identification information generated in step S304 as in step S14 of FIG. 7 (step S305).

  Next, the control unit 22 acquires an image by controlling the camera 35 via the captured image processing unit 34 continuously for a predetermined time until a predetermined gesture is recognized, and acquires the image by the captured image processing unit 34. An image recognition process is performed on the processed image (step S306). Here, the user refers to the video corresponding to the displayed identification information and performs the next gesture or waits for a certain time without performing the gesture. That is, when only one or a plurality of display devices 1b that want to perform a predetermined process (in this case, want to turn off the power) display a video corresponding to the identification information, the user performs a gesture meaning “confirm”. Do.

  In addition, when the unintended display device 1b is included in the plurality of display devices 1b that performed the video display corresponding to the identification information, the user can make a gesture corresponding to the identification information displayed by the intended display device 1b. I do. For example, when two display devices 1 display numbers “1” and “5” as images corresponding to the identification information, respectively, predetermined processing is performed on the display device 1b displaying “1”. For example, the user performs a gesture of shaking the hand “1” times. Alternatively, a gesture of raising “1” fingers is performed.

  If the intended display device 1b is not included in the plurality of display devices 1b that have displayed the video corresponding to the identification information, the user does not perform a gesture for a certain period of time, and again returns to the predetermined video in step S301. Waiting until the display is performed or when the user performs a gesture meaning “withdrawal (reset)”, the control unit 22 proceeds to a step of performing a predetermined video display in step S301 according to the gesture.

  Next, in step S304, the control unit 22 determines whether a gesture meaning “confirm” or a gesture corresponding to the identification information is input within a predetermined time (step S307). If the gesture corresponding to the video corresponding to the identification information displayed by the own device within a predetermined time (that is, the confirmation gesture or the gesture corresponding to the identification information of the own device) is not performed, the control unit 22 It is determined that “confirmation” or a gesture corresponding to the identification information has not been input, and the process returns to step S301 to perform a predetermined video display (from “No” in step S307 to step S301). On the other hand, when the gesture corresponding to the video corresponding to the identification information displayed by the device itself is recognized within the predetermined time in step S306, the control unit 22 determines that the gesture corresponding to the “confirmation” gesture or the identification information within the predetermined time. Is entered, and the process proceeds to step S308 (from “Yes” in step S307 to step S308).

  In step S <b> 308, the control unit 22 performs control (acceptance display) to display a video indicating that a gesture for selecting the device itself is accepted, and waits for acceptance of a next gesture that specifies the content of a predetermined process. The mode is changed (step S308). In step S308, the control unit 22 turns on / off the screen a plurality of times, displays a word such as “OK”, or displays a predetermined icon or the like. And the control part 22 transfers to command reception mode while performing reception display.

  Next, the control unit 22 acquires an image by controlling the camera 35 via the captured image processing unit 34 continuously for a predetermined time until a predetermined gesture is recognized, and acquires the image by the captured image processing unit 34. An image recognition process is performed on the processed image (step S309). Next, in step S309, the control unit 22 determines whether or not a gesture designating a predetermined process (in this case, a power-off process) has been recognized (step S310). Here, the user instructs the display device 1b to turn off the power by performing a gesture meaning “OFF” or the like.

  In step S310, when the control unit 22 determines in step S309 that a gesture for instructing power-off is recognized within a predetermined time, the control unit 22 outputs a predetermined signal to the signal line 25, turns off the switch 14, The supply of power from the power supply unit 12 to the light source driving unit 15 and the light source unit 16 is cut off (“Yes” in step S310 to step S311). Here, the power source of the desired display device 1b can be turned off. The processing is completed by this series of sequences.

In this embodiment, after the user selects a desired display device 1b, the display device 1b confirms acceptance of the OFF command by performing a specific gesture (such as waving his hand) again and turns off the power. As one of the specific operations, it may disappear from the field of view of the camera 35 of the display device 1b.
Moreover, the form using the command by the gesture is effective when the user can enter the imaging range of the camera 35 of the display device 1b. In this case, it is effective when it is difficult for the user's voice to reach the display device 1b or when an operation is performed near the surface projected from the display device.

<Fourth Embodiment>
Hereinafter, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a block diagram for explaining a configuration example of a display device 1c according to the fourth embodiment. The display device 1c of the fourth embodiment is configured as a projector that can be used with other projectors. The usage form with the other display device 1c is the same as that of the display device 1 described with reference to FIGS. In FIG. 13, the same components as those shown in FIG. FIG. 14 illustrates a configuration example of a remote controller (or a mobile terminal device such as a smartphone) for inputting a predetermined command to the display device 1c (hereinafter, described as a remote controller as a representative). FIG. FIG. 15 is a flowchart for explaining an operation example when the display device 1c is used together with another display device 1c.

  A display device 1c according to the fourth embodiment illustrated in FIG. 13 is different from the display device 1 according to the first embodiment illustrated in FIG. 1 in that a wireless signal processing unit 36, a wireless signal receiving unit 37, and a display device 1c are used. And an antenna (or a light receiving element) 38 provided so as to receive a radio signal from the outside. In addition, in the display apparatus 1c of FIG. 13, although the audio | voice processing part 31 and the microphone 32 are abbreviate | omitted, you may provide as it is. The radio signal receiving unit 37 is a receiver that receives a radio signal transmitted from the remote controller 60 and outputs a demodulated signal as a digital signal. The radio signal processing unit 36 receives the output signal of the radio signal receiving unit 37 and outputs a signal indicating that to the control unit 22 when it corresponds to a specific command.

  14 includes an antenna (or light emitting element) 61, a signal generation unit 62, a display unit 63, a signal selection unit 64, a control unit 65, and a power supply unit 66. . The signal generation unit 62 generates a signal propagated by a visible or invisible electromagnetic wave representing a predetermined command. The display unit 63 displays information representing the selection candidate command. The signal selection unit 64 includes an operation unit for inputting a user operation, such as a touch panel formed on the display unit 63, a numeric keypad including a plurality of number keys, and the like. The control unit 65 controls each unit. The power supply unit 66 supplies predetermined power to each unit. The remote controller 60 is a command for instructing a selection signal or predetermined processing by a signal generator 62 that generates a radio signal such as infrared rays, weak radio waves, specific low power, Bluetooth (registered trademark), Zigbee (registered trademark), 802.11x, or the like. Is transmitted from the antenna 61.

  Next, an operation example of the display device 1c according to the present embodiment will be described with reference to FIG. First, when the power switch 52 is turned on, in the display device 1c, the power supply unit 12 supplies power to each unit, the control unit 22 turns on the switch 14, and controls each unit to start projecting an image (step S41). . Next, the control unit 22 determines whether or not to display identification information based on the output of the wireless signal processing unit 36 (step S42). In this embodiment, the user operates the remote controller 60 to issue a command signal meaning “select” from the remote controller 60, which is received by the wireless signal receiver 37 and the wireless signal processor 36 is a “select” command. When it is recognized, the control unit 22 determines to display the identification information in step S42 (“Yes” in step S42). In this case, it is assumed that the user approaches the desired display device 1c to which the power is to be turned off and transmits a command “select”, which is a specific command in this example, from the remote controller 60. Then, the determination result is “Yes” in step S42, and the control unit 22 performs the process of step S43.

  In step S43, similarly to step S13 in FIG. 1, the control unit 22 randomly generates identification information (step S43). Next, the control unit 22 controls the light source unit 16, the light valve 17 and the like so as to project an image corresponding to the identification information generated in step S43, similarly to step S14 in FIG. 1 (step S44).

  Next, the user refers to the video corresponding to the displayed identification information and transmits the next command by operating the remote controller 60 or waits for a certain time without transmitting the command. That is, when only one or a plurality of display devices 1c that want to perform a predetermined process (in this case, turn off the power) display a video corresponding to the identification information, the user issues a command meaning “confirm”. Send. In addition, when the unintended display device 1c is included in the plurality of display devices 1c that have performed video display corresponding to the identification information, the user can select a command that matches the identification information displayed on the intended display device 1c. Is selected by the remote controller 60 and transmitted. For example, when the two display devices 1c display the numbers “1” and “5” as the images corresponding to the identification information, the predetermined processing is performed on the display device 1c displaying “1”. The user transmits a command indicating the number “1” from the remote control 60.

  In addition, when the intended display device 1c is not included in the plurality of display devices 1c that have performed the video display corresponding to the identification information, the user does not transmit a command for a certain period of time, and again in step S41, the predetermined display device 1c is displayed. When waiting for the video display to be performed or when the user performs a gesture meaning “retract (reset)”, the control unit 22 proceeds to a step of performing a predetermined video display in step S41 according to the gesture.

  Next, after displaying the video corresponding to the identification information in step S44, the control unit 22 determines whether or not a command corresponding to “confirmation” or the identification information is transmitted from the remote controller 60 within a predetermined time (step S44). S45). If the command corresponding to the video corresponding to the identification information displayed by the device is not received within the predetermined time, the control unit 22 determines that the command corresponding to the “confirmation” or the identification information is not received within the predetermined time. Then, the process returns to step S41 to perform a predetermined video display (from “No” in step S45 to step S41). On the other hand, when a command corresponding to the video corresponding to the identification information displayed by the own device is received within a predetermined time, the control unit 22 determines that the command corresponding to “confirmation” or the identification information is received within the predetermined time. Then, the process proceeds to step S46 (from “Yes” in step S45 to step S46).

  In step S46, the control unit 22 performs control (acceptance display) to display a video indicating that the command for selecting the device itself has been accepted, and waits for acceptance of the next command specifying the content of the predetermined process. The mode is changed (step S46). In step S <b> 46, for example, the control unit 22 turns on / off the screen a plurality of times, displays a wording such as “OK”, or displays a predetermined icon or the like. And the control part 22 transfers to command reception mode while performing reception display.

  Next, after performing the acceptance display, the control unit 22 determines whether or not a command designating processing (in this case, a command to turn off the power) is received within a certain time (step S47). Here, the user operates the remote controller 60 to transmit a command such as “OFF” to instruct the desired display device 1 c to turn off the power. When a command designating a predetermined process (in this case, a command for instructing power off) is received within a predetermined time after the control unit 22 performs reception display, the control unit 22 receives a command for instructing power off. It is determined that it has been received (“Yes” in step S47). On the other hand, after the control unit 22 performs reception display, if a command designating a predetermined process (in this case, a command to turn off the power) is not received within a certain time, the control unit 22 instructs to turn off the power. It is determined that the command to be executed has not been input, and the process returns to step S41 to perform a predetermined video display (from “No” in step S47 to step S41).

  In step S47, when the control unit 22 determines that a command to turn off the power is received within a predetermined time, the control unit 22 outputs a predetermined signal to the signal line 25, turns off the switch 14, and turns off the power supply unit 12. Power supply to the light source drive unit 15 and the light source unit 16 is cut off (“Yes” in step S47 to step S48). Here, the power supply of the desired display device 1c can be turned off. The processing is completed by this series of sequences.

  As described above, the display device 1 c according to the present embodiment uses the antenna 38, the wireless signal receiving unit 37, and the wireless signal processing unit 36 to receive a command received from the user using a wireless signal such as a weak radio wave. The user transmits a selection signal and a command signal to the display device 1c such as a desired projector by a wireless signal such as infrared rays, weak radio waves, and specific low power. Then, the selected display device 1c displays that it has been selected by some unique means. A specific icon randomly selected from among a plurality of built-in icons, a random number, a color selected at random, and the like are displayed.

Even if a plurality of adjacent display devices 1c are selected at the same time, the display device 1c displays a unique selection number, icon, etc., so that the user can input the selection number etc. from the signal selection unit 64 of the remote control 60. By inputting and transmitting, it is possible to select one display device 1c. Then, the user can turn off the power by transmitting an “OFF” signal to the display device 1c in the command reception mode.
In addition, the form which transmits a command using radio | wireless is especially effective when the shield which lets an electromagnetic wave pass between the user and the display apparatus 1c is provided.

<Fifth Embodiment>
Hereinafter, a fifth embodiment of the present invention will be described with reference to the drawings. FIG. 16 is a block diagram for explaining an operation example of the fifth embodiment. The fifth embodiment is an embodiment as a modification of the first to fourth embodiments, in which the operation in the first to fourth embodiments described above is partially modified. In the fifth embodiment, a recording area (information storage unit) for storing a tiling flag is set in the storage device 21 shown in FIG. The tiling flag is 1-bit data representing information indicating whether or not the display device 1 or the like is being used with (or provided with) another display device 1 or the like. The tiling flag can be set by the user inputting a predetermined command to the display device 1 or the like, or setting a dip switch or the like.

  In this embodiment, when the power switch 52 is turned on, the control unit 22 first reads a tiling flag (information) from the storage device 21 (information storage unit) (step S51), and sets the tiling flag based on the value of the tiling flag. It is determined whether or not it is ringed (step S52). Here, being tiled means a case where it is installed so as to be used with another display device 1 or the like. When the tiling is not performed, the control unit 22 performs a command waiting process (from “No” in step S52 to step S53). When receiving a command such as “OFF” during the command waiting process, the control unit 22 executes the received command (“Yes” in step S54 to step S55). On the other hand, if no command is received (“No” in step S54), the process returns to step S53 to perform a command wait process. On the other hand, when the command received in step S55 is executed, the process returns to step S53 to perform command wait processing.

  On the other hand, if it is determined in step S52 that tiling has been performed (in the case of “Yes” in step S52), the control unit 22 performs step S11 in FIG. 7, step S21 in FIG. 9, step S301 in FIG. Then, the processing after step S41 in FIG. 15 is executed (step S56).

  In this embodiment, when it is determined that a predetermined command is received in step S54 (in the case of “Yes” in step S54), the recognized command is immediately executed in step S55 without performing confirmation processing. . However, the command execution process is not limited to this, and for example, a process for requesting command input for reconfirming whether or not the recognized command may be executed may be added.

  The command in the present embodiment is a voice input command in the first and second embodiments, a command by a gesture in the third embodiment, or a command input using a radio signal in the fourth embodiment. is there.

  In this embodiment, when it is not used with other display apparatuses 1 etc., the display process etc. of identification information are abbreviate | omitted, and the process by the control part 22 can be made efficient.

  As described above, according to each embodiment of the present invention, a user can select a desired display device by detecting a command by a predetermined command detection unit and displaying identification information by a display unit. Become. Therefore, the configuration and processing of the display device can be easily simplified. Here, the command detection unit corresponds to the voice processing unit 31, the microphone 32, and the control unit 22 in the configuration illustrated in FIGS. 1 and 8. Further, the command detection unit corresponds to the captured image processing unit 34, the camera 35, and the control unit 22 in the configuration illustrated in FIG. In the configuration shown in FIG. 13, the command detection unit corresponds to the radio signal processing unit 36, the radio signal reception unit 37, the antenna 38, and the control unit 22. The display unit corresponds to the light source driving unit 15, the light source unit 16, the image processing unit 19, the light valve 17, the light valve driving unit 20, and the control unit 22 shown in FIG. The command processing unit of the present invention has a configuration corresponding to the control unit 22.

  Further, the first command of the present invention corresponds to the voice command of the word “select” for which presence / absence of reception is determined in step S12 of FIG. Furthermore, the first command of the present invention corresponds to a predetermined voice command indicating a word such as “ID display” for which presence / absence of reception is determined in step S22 of FIG. Furthermore, the first command of the present invention corresponds to a gesture meaning “selection” in which presence / absence of reception is determined in step S303 in FIG. Further, the first command of the present invention corresponds to a command signal meaning “selection” in which the presence / absence of reception is determined in step S42 of FIG. Further, the first command of the present invention corresponds to a predetermined command signal for which presence / absence of reception is determined in step S54 of FIG.

  The commands in the present invention include voice commands, gestures (an example of commands propagated by visible electromagnetic waves), wireless signals such as weak radio waves from a remote controller (an example of commands propagated by invisible electromagnetic waves), and other intentions It is an instruction signal that can reach other than the display device (that is, it cannot reach if the distance to the unintended display device is long) and propagates by at least one of sound (sound) and visible or invisible electromagnetic waves It is what is done.

  The identification information in the present invention includes information that can be uttered by the user such as numbers, colors and characters, information that can be operated by the user such as shaking hands, shaking vertically, drawing a circle, the number of the numeric keypad of the remote control, etc. It corresponds.

  Further, the second command of the present invention corresponds to “confirmation” in which the presence / absence of reception is determined in step S15 of FIG. 7 or the voice input of a word corresponding to the identification information. Furthermore, the second command of the present invention corresponds to a voice command representing “confirmation” in which the presence / absence of reception is determined in step S24 of FIG. 9 and a voice command corresponding to the displayed ID. Further, the second command of the present invention corresponds to a gesture corresponding to a gesture of “confirmation” or identification information for which the presence or absence of reception is determined in step S307 of FIG. Furthermore, the second command of the present invention corresponds to a command corresponding to “confirmation” in which the presence or absence of reception is determined in step S45 of FIG. 15 or the identification information.

  The third command of the present invention corresponds to a voice command corresponding to the process of turning off the power executed in step S18 of FIG. Further, the third command of the present invention corresponds to a gesture corresponding to the process of turning off the power executed in step S311 of FIG. Further, the third command of the present invention corresponds to a command corresponding to the process of turning off the power executed in step S48 of FIG. Furthermore, the third command of the present invention corresponds to a command that is required to be input in reconfirmation when executing the recognized command described as the modified example of FIG.

  The predetermined processing executed by the control unit 22 in steps S18 (FIG. 7), S25 (FIG. 9), etc. according to the command from the user reduces the brightness of the projection light while the power is on, in addition to turning off the power. “Mute” to be (or zero), display of a menu image for controlling the display device, switching of image content to be projected, switching of an input source of image content, switching from image projection to illumination projection, and the like.

  The command processing unit of the present invention corresponds to the control unit 22.

In the above-described embodiment, as an example of the predetermined process that the user performs on a desired display device, the power-off, that is, the process of turning off the display unit is described. However, the predetermined process is not limited thereto. For example, a process of turning on only the power of only the display device in the power-off state, a process for changing or adjusting the display state and the display image, and the like are arbitrary. Further, a combination of voice input, gesture input, and wireless signal input may be used to instruct selection (that is, identification information display instruction), confirmation, identification information selection, command designation, and the like.
The light valve is not limited to the transmissive liquid crystal but may be a reflective liquid crystal. The light valve is not limited to liquid crystal, but may be a DMD (digital mirror device).
Although the display device has been described as a projector, the display device may be a liquid crystal display device or the like whose display surface is configured by a liquid crystal panel.

  Note that a program for realizing the function of an arbitrary component in the above-described device (for example, display device 1) is recorded on a computer-readable recording medium, and the program is read into a computer system and executed. You may do it. Here, the “computer system” includes hardware such as an OS (Operating System) and peripheral devices. “Computer-readable recording medium” means a portable disk such as a flexible disk, a magneto-optical disk, a ROM (Read Only Memory), a CD (Compact Disk) -ROM, or a hard disk built in a computer system. Refers to the device. Further, the “computer-readable recording medium” means a volatile memory (RAM: Random Access) inside a computer system that becomes a server or a client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. Memory that holds a program for a certain period of time, such as Memory).

In addition, the above program may be transmitted from a computer system storing the program in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the “transmission medium” for transmitting the program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line.
Further, the above program may be for realizing a part of the functions described above. Further, the program may be a so-called difference file (difference program) that can realize the above-described functions in combination with a program already recorded in the computer system.

  DESCRIPTION OF SYMBOLS 1, 1a, 1b, 1c ... Display apparatus, 11 ... Connector, 12 ... Power supply part, 14 ... Switch, 15 ... Light source drive part, 16 ... Light source part, 17 ... Light valve, 18 ... Projection lens, 19 ... Image processing part , 20: Light valve drive unit, 21: Storage device, 22 ... Control unit, 31 ... Audio processing unit, 32 ... Microphone, 33 ... ID setting unit, 34 ... Captured image processing unit, 35 ... Camera, 36 ... Wireless signal processing 37, wireless signal receiving unit, 38 ... antenna, 41 ... duct, 51 ... commercial power supply, 52 ... power switch, 60 ... remote control

Claims (5)

A display device that can be used with other display devices,
A display unit;
A command detection unit for detecting a command propagated by at least one of sound and visible or invisible electromagnetic waves;
A command processing unit;
With
In response to the command detection unit detecting the first command, the display unit displays identification information,
When the command detection unit detects a second command corresponding to the identification information after the display unit displays the identification information, the command processing unit performs a predetermined process, or a third process Wait for command,
Display device. The display device according to claim 1,
A random ID generator for randomly outputting the identification information;
In response to the command detection unit detecting the first command, the display unit displays the identification information output at random.
Display device. The display device according to claim 1,
A storage unit for storing the identification information;
In response to the command detection unit detecting the first command, the display unit displays the identification information stored in the storage unit.
Display device. The display device according to claim 1,
An information storage unit for storing information indicating whether or not the display device is used with the other display device;
When the information indicates that the information is being used with the other display device, the display unit displays the identification information in response to the command detection unit detecting the first command,
When the information does not indicate that the information is being used with the other display device, the command processing unit performs a predetermined process in response to the command detection unit detecting the first command, Or wait for the third command,
Display device. A control method of a display device that can be used with other display devices,
The display device
A display unit;
A command detection unit for detecting a command propagated by at least one of sound and visible or invisible electromagnetic waves;
A command processing unit;
It is equipped with
In response to detection of the first command by the command detection unit, identification information is displayed by the display unit,
After the display unit displays the identification information, when the command detection unit detects a second command corresponding to the identification information, the command processing unit performs a predetermined process, or a third Wait for command,
Control method.

Images