JP2016012850A - Video projection device, video projection system, remote controller selecting method of video projection device and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent reaction to unintended remote control operation without special setting work.SOLUTION: A video projection device which generates a projected image in response to inputted video data to project it includes: a main control section 71 for controlling individual portions; an operation control section 81 for outputting an instruction signal received from a remote controller 111 to the main control section 71; a video imaging section 105 for imaging a peripheral image of a self-machine; a main control section 71 for analyzing an image in a remote control operation range peculiar to the device among the peripheral images which the video imaging section 105 images, and determining presence or absence of operation to the device using the remote controller; and a main control section 71 for permitting control in the main control section 71, which corresponds to the instruction signal received from the remote controller 111, when the operation is determined to be that to the device using the remote controller 111.

Description

  The present invention relates to a video projection apparatus that projects an image on a screen or the like, and more particularly to a video projection apparatus, a video projection system, a remote control selection method for a video projection apparatus, and a program that can be instructed by a remote controller.

  When the projectors are classified according to the operation method, they can be roughly classified into two types: a CRT method using a CRT and a light valve method using a light valve. The light valve method is a method of projecting a projection image formed on an image forming element by modulating light from a light source with a light valve, and has recently become mainstream. Liquid crystal projectors, DLP projectors, LCOS projectors, and GLV projectors are light valve systems.

In recent years, with the spread of projectors that visualize and project image data, a plurality of projectors are often used simultaneously in the same space.
In such a case, inconvenience occurs when trying to operate each projector with the remote control. That is, there is a problem that a plurality of projectors react to an instruction signal issued from one remote controller, and even a projector not intended by the operator of the remote controller operates.

  As a solution to such a problem, conventionally, an ID is set for each remote controller, and the ID of a remote controller that accepts communication is set and registered in the projector, so that an instruction signal can be received only from a remote controller having the same ID. Technology to prevent it is known.

Patent Document 1 discloses a projector in which signals from a remote controller defined in two types of formats (communication methods) are selectively received by a remote control signal receiver (see paragraphs 0029 to 0031). ). That is, the remote control signal receiving unit cannot make both formats valid (receivable state) at the same time, and sets only one of the formats to valid. The format is set by projecting a format selection menu onto the screen and switching the format to be activated by an instruction from the operation panel or remote control (see paragraphs 0038 to 0041 and FIGS. 3 to 4).
For this reason, according to the invention described in Patent Document 1, only the remote controller that outputs the signal of the format selected from the format selection menu is enabled, so that it is not intended by the instruction from the remote controller that outputs the signal of the format that is not selected. It is possible to prevent the operation.

When adopting a technology that selects remote controllers that can receive instruction signals based on the coincidence of IDs, the ID of the remote controller that enables communication must be set and registered in the projector, and the work for that is complicated There is a problem that.
The invention described in Patent Document 1 has the same problem, and even when the format selection menu is projected onto the screen and the format switching operation is performed, the operation is complicated.
On the other hand, if the setting for associating the projector with the remote control is maintained, the complexity of having to set the association every time both are used is released. It will be treated as a dedicated machine. For this reason, there has been a problem that a free and flexible remote controller cannot be used.

  The present invention has been made in view of the above, and as an object thereof is a video projection device, a video projection system, and a video projection that can prevent reaction to an unintended remote control operation without requiring a special setting operation. An object of the present invention is to provide a remote control selection method and program for an apparatus.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a video projection device that generates and projects a projection image based on input video data, and is received from a main control unit that controls each unit and a remote controller An operation control unit that outputs an instruction signal to the main control unit, a video imaging unit that captures a peripheral image of the own device, and a remote control operation range unique to the device among the peripheral images captured by the video imaging unit A first remote control unit that determines whether or not there is an operation on the device using the remote control, and the remote control when it is determined that the operation is performed on the device using the remote control. And a second remote control unit that permits control by the main control unit in accordance with the instruction signal received from the first control unit.

  According to the present invention, the presence / absence of a remote control intended for the operation of the own device is estimated based on the peripheral image captured by the video imaging unit, and the instruction wirelessly output from the remote control only when it is determined that such a remote control exists Since each part can be controlled according to the signal, it is possible to prevent a response to an unintended remote control operation without requiring a special setting operation.

1 is a perspective view of a video projector according to an embodiment of the present invention. It is a perspective view which shows the state which removed the exterior cover and exposed the internal component. It is a perspective view which shows a lamp unit and an optical unit. It is a horizontal sectional view showing a lamp unit and an optical unit. It is a block diagram which shows the electrical connection of each part. It is a flowchart which shows the flow of a remote control selection process. (A) is a schematic view of a state in which the image projection apparatus projects a projection image onto the screen from the front direction, and (b) is a screen imaging unit that captures the projection image projected on the screen. FIG. 4C is a schematic diagram showing a state viewed from the front side, FIG. 4C is a schematic diagram showing a projected image captured by the screen imaging unit, and FIG. Schematic view seen from above, (e) is a schematic diagram showing the state in which the screen imaging unit is imaging the projection image from the front side, and (f) is a schematic diagram showing the projection image captured by the screen imaging unit. . It is a data table figure utilized when calculating | requiring the range estimated to operate an own machine with a remote control based on the projection image which the screen imaging part imaged. (A) is a schematic diagram which shows an example of the operation estimation range calculated | required based on the projection image which the screen imaging part imaged, (b) is a schematic diagram which shows another example of the operation estimation range. It is a schematic diagram for demonstrating the process which determines the presence or absence of the operation possibility of a remote control within the operation estimation range.

An embodiment of the present invention will be described with reference to the drawings.
In the present embodiment, a projection image is generated on the image forming element (DMD element 56) based on the input video data, and this is generated on the screen S (FIGS. 7A, 7B, 7D) (FIG. 7A, 7B, 7D). e) and FIG. 9 (a) and FIG. 9 (b) show an example of the image projection apparatus 1 for projection. The video projection apparatus 1 according to the present embodiment receives an instruction signal that is wirelessly output from the remote control 111 (see FIGS. 5 and 10) and can be operated remotely.

<Basic configuration of the device>
FIG. 1 is a perspective view of an image projection apparatus according to an embodiment of the present invention.
As shown in FIG. 1, the image projection apparatus 1 exposes a part of the projection unit 40 included in the optical device 42 (see FIGS. 2 to 4) on the front surface of a flat rectangular housing 11, and the operation unit 21 on the upper surface. Various terminal groups 31 are arranged on the front. The housing 11 has a structure in which an exterior cover 13 is detachably attached to a base 12.
The operation unit 21 includes a power switch 15, a four-contact switch 16 having a “decision button” at the center, a push switch 17 including “menu”, “focus”, “input”, and “AV mute”, and an indicator 18.
As the terminal group 31, a computer input terminal 32, a video input terminal 33, an HDMI (registered trademark) terminal 34, an audio input terminal 35, an audio output terminal 36, a wired LAN terminal 37, and a USB terminal 38 are provided.

FIG. 2 is a perspective view showing a state in which the exterior cover is removed and internal components are exposed.
As shown in FIG. 2, many of the components of the video projector 1 are mounted on the base 12 of the housing 11.
Such components include a light source device 41, the optical device 42 described above, a power supply device 43, various fans 44, and the like. Needless to say, the control circuit 70 is also mounted on the base 12 as a component.

FIG. 3 is a perspective view showing the lamp unit and the optical unit. FIG. 4 is a horizontal sectional view showing the lamp unit and the optical unit.
As shown in FIGS. 3 and 4, the light source device 41 includes a lamp 45 as a light source. The lamp 45 is a high-pressure mercury lamp and irradiates white light toward the optical device 42.

As shown in FIG. 4, the optical device 42 includes an illumination unit 50 and the projection unit 40 described above, and uses a DMD (Digital Mirror Device) element 56 as an image forming element.
The DMD element 56 is a reflective display element in which a large number of rectangular micromirrors are arranged in a matrix, and switches the direction of each micromirror according to an on / off signal.

The illumination unit 50 includes a color wheel 51, a light tunnel 52, a relay lens 53, a plane mirror 54, and a concave mirror 55.
The color wheel 51 converts white light emitted from the lamp 45 of the light source device 41 into light that repeats each color of RGB every unit time, and emits the light toward the light tunnel 52.
The light tunnel 52 is formed by sticking plate glasses into a cylindrical shape, and guides light emitted from the color wheel 51 to the relay lens 53.
The relay lens 53 is a combination of two lenses and collects light while correcting axial chromatic aberration of light emitted from the light tunnel 52.
The plane mirror 54 and the concave mirror 55 reflect the light emitted from the relay lens 53 and condense it on the DMD element 56.

In the DMD element 56, each micromirror is driven in a time-sharing manner based on video data captured from a device connected to the terminal group 31, for example, a personal computer.
That is, the DMD element 56 is provided with an on / off signal time-divided for each color frame to be converted by the color wheel 51, and the DMD element 56 switches the direction of each micromirror for each frame accordingly. .
By such time-division driving, the DMD element 56 switches between light incident on the projection unit 40 (light to be used) and light that is not incident (light to be discarded) for each color frame, and generates a projection image to be projected on the screen S. To do.

The projection unit 40 is composed of a plurality of lens groups 58, and magnifies and projects light directed to the projection unit reflected by the DMD element 56 onto the screen.
The light incident on the lens group 58 of the projection unit 40 is “use light” reflected by the micromirrors of the DMD element 56, and the “light to be discarded” is applied to an OFF light plate (not shown) provided in the projection unit 40. Led.
Such a projection unit 40 changes the relative positional relationship between the lens groups, thereby enlarging the projection image PI projected on the screen S (see FIGS. 7B, 7C, 7E, and 7F). The magnification can be changed.

FIG. 5 is a block diagram showing an electrical configuration of each part.
The control circuit 70 of the video projection device 1 is mainly configured by a main control unit 71.
The main control unit 71 is configured by connecting a ROM 75, an SDRAM 77, and an NVRAM 79 to a CPU 73 that executes various arithmetic processes.
A ROM 75 that stores data in a fixed manner stores a BIOS, a control program, and the like. The CPU 73 uses an SDRAM 77 that stores data in a rewritable manner as a work area, and controls each unit according to a control program stored in the ROM 75.
The NVRAM 79 is a data holding memory device that records various setting information and the like even when the video projector 1 is powered off. The NVRAM 79 obtains a remote control operation range that is estimated (assumed or assumed) that the video projection apparatus 1 operates the remote control 111, that is, an operation estimation range PA (see FIGS. 9A, 9B, and 10). A data table T used at this time is also recorded. This data table T is used when a remote control sorting process (see FIG. 6) described later is executed.

The main control unit 71 includes an operation control unit 81, a video / audio processing unit 83, a lamp driving unit 85, an optical control unit 91, a screen imaging unit 101, a distance measurement unit 103, a video imaging unit 105, and a comparison determination unit. 107 is connected. Each of these units executes a predetermined operation or process in accordance with a control signal given from the main control unit 71.
The operation control unit 81 is an input circuit that takes in the signal from the operation unit 21 and inputs the signal to the main control unit 71.
The operation control unit 81 also has a wireless communication function, and executes data wireless communication processing with the remote controller 111. The remote control 111 includes various operation buttons (not shown) equivalent to the operation unit 21 of the video projection device 1 and executes signal transmission / reception processing by wireless communication. The wireless communication method between the remote controller 111 and the operation control unit 81 is based on infrared communication as an example, but it goes without saying that wireless communication of another method may be executed.
The CPU 73 of the main control unit 71 executes processing according to the signal input from the operation control unit 81.

The video / audio processing unit 83 is an integrated circuit that captures video data and audio data from the video input terminal unit 89 that is an interface of the terminal group 31 described above.
The captured video data is adjusted to the RGB video data format that can be processed by the main control unit 71 and output to the main control unit 71.
The captured audio data is transmitted to the audio output unit 87. The audio output unit 87 amplifies an analog audio signal obtained by D / A converting audio data with an amplifier (not shown) and outputs the amplified signal from a speaker (not shown).
The lamp driving unit 85 is a discharge lamp lighting circuit that starts and lights the lamp 45, and starts or turns off the lamp 45 in accordance with a command from the CPU 211a.
The optical control unit 91 is an integrated circuit that drives and controls the optical unit 95, that is, the optical device 42 and the DMD element 56.

The screen imaging unit (projection plane imaging unit) 101 is a digital image imaging device such as an autofocus camera, a stereo camera, or an omnidirectional camera, and the digital image imaging device is embedded in the housing 11. The projected image projected on the screen S by the video projector 1 (own device), that is, the projected image PI is captured.
As an example, the screen imaging unit 101 is embedded in a louver portion of the housing 11 and a portion adjacent to the lens of the projection unit 40 (see FIG. 1), and the appearance is not known from the outside.

The distance measuring unit 103 measures the length dimensions of the four sides of the projection image PI (see FIGS. 7C and 7F) captured by the screen imaging unit 101. That is, the image captured by the screen imaging unit 101 is stored in a memory, the portion of the projection image PI stored in the memory is extracted, and the length dimensions of the four sides in the vertical and horizontal directions are measured for the extracted image. Then, the measurement result is output to the main control unit 71.
As an example, the distance measurement unit 103 may be configured as an integrated circuit specialized for a single process of measuring distance from image data. As another example, the CPU 211a of the main control unit 211 is stored in the ROM 211b. Alternatively, the process may be configured to be executed according to the control program.

The image capturing unit 105 is a digital image capturing device such as an autofocus camera, a stereo camera, or an omnidirectional camera, and the digital image capturing device is embedded in the housing 11. ) Captures the periphery and obtains a peripheral image SI (see FIG. 10).
For example, the video imaging unit 105 is installed on the back side of the video projector 1, that is, on the side opposite to the side where the lens of the projection unit 102 is exposed (see FIG. 1).

The comparison determination unit 107 analyzes the peripheral image SI of the image projection apparatus 1 captured by the image capturing unit 105 and operates the remote control 111 within the operation estimation range PA that is estimated to be operated by the remote control 111. An image recognition process of determining whether or not there is a possibility is executed. Then, the recognition result is transmitted to the main control unit 71.
When the image recognition process is executed, the comparison / determination unit 107 determines that the “remote controller shape image A” and the “human hand shape image B” When the shape image B of the human hand overlaps the shape image A of the remote control, it is determined that the remote control 111 can be operated (see FIG. 10). Therefore, in the determination process, image data serving as a sample of the shape image A of the remote controller and the shape image B of the human hand is required. Accordingly, the comparison / determination unit 107 stores the sample image data in the storage unit 109, compares the stored image data with the image data extracted from the peripheral image SI, and controls the remote controller within the operation estimation range PA. The presence / absence of the operation possibility 111 is determined.
As an example, the comparison determination unit 107 may be configured as an integrated circuit specialized for a single process called image recognition processing. As another example, the CPU 211a of the main control unit 211 follows a control program stored in the ROM 211b. It may be configured as a process to be executed.

<Basic action of the device>
In such a configuration, the video projection device 1 captures video data from a device connected to the terminal group 31, such as a personal computer, via the video input terminal unit 89. The captured video data is adjusted to the RGB video data format by the video / audio processing unit 83 and transferred to the main control unit 71, and the audio / video processing unit 83 controls the audio output unit 87 to output the audio data. Is made.

When the RGB video data is transferred from the video / audio processing unit 83, the main control unit 71 develops the video data in an image memory provided in a part of the SDRAM 77 for projection onto the screen S, and A control signal is given to the controller 91.
The optical control unit 91 that has received the control signal drives and controls the color wheel 51 and the DMD element 56, and generates a projection image on the DMD element 56 in accordance with the video data developed in the image memory.
That is, the individual micromirrors included in the DMD element 56 are time-division driven based on the video data to be projected.
More specifically, in synchronization with the rotation of the color wheel 51, an on / off signal corresponding to a pixel (micromirror of the DMD element 56) corresponding to one of RGB selected by the color wheel 51 is displayed as an image. Generate based on data and switch the orientation of individual micromirrors.
By repeating this operation in the order of RGB, the DMD element 56 generates a time-divided projection image based on the video data.
In the optical device 42, individual RGB light repeatedly generated by the rotation of the color wheel 51 is incident on the relay lens 53 from the light tunnel 52 and is condensed on the DMD element 56. Then, only the reflected light of the color pixel (DMD element 56 micromirror) according to the video data is incident on the projection unit 40 and enlarged and projected on the screen by the lens group 58. By repeating this for each RGB color, a complete projection image based on the video data is projected on the screen as a projection image PI.

<Remote control sorting process>
In the remote control selection process, a first process for determining whether or not the remote control 111 intended for the operation of the own device within the operation estimation range PA is possible. Control of each part is executed in accordance with an instruction signal received from the remote control 111. It is executed in a two-stage manner of the second processing that can be performed (see FIGS. 7 to 10).
In the first process, an operation estimation range PA is set from a projection image PI (test pattern) captured by the screen imaging unit 101, the peripheral image SI captured by the video imaging unit 105 is analyzed, and the operation estimation range PA is automatically detected. This is a process (process, function, means) for estimating the presence / absence of the remote control 111 intended to operate the machine.
The second process is a process (step, function, means) that enables control of each unit according to an instruction signal wirelessly output from the remote controller 111 only when it is determined that there is a corresponding remote controller 111.
It is the main control unit 71 that executes such remote control selection processing. That is, in cooperation with the distance measuring unit 103 and the comparison / determination unit 107, the CPU 73 executes the program according to the control program stored in the ROM 211b.
Here, for convenience, it is assumed that the first process performed in the main control unit 71 is the first remote control unit and the second process is the second remote control unit.

Hereinafter, the flow of remote control selection processing will be described based on the flowchart shown in FIG.
(1) The first process executed by the first remote control unit will be described.
First, the CPU 211a issues a start command to the screen imaging unit 101 to image the screen S (step S5).
In response to this, the screen imaging unit 101 images the screen S.
As illustrated in FIG. 7A, when the video projection device 1 is installed so as to face the center portion of the screen S, the optical axis of the screen imaging unit 101 is perpendicular to the screen S. The unit 101 captures an image as illustrated in FIG.
As illustrated in FIG. 7D, when the video projector 1 is installed so as to face the screen S from the end, the optical axis of the screen imaging unit 101 crosses the screen S surface at an acute angle. The imaging unit 101 captures an image as illustrated in FIG.

Next, the CPU 211a gives an operation instruction signal to the distance measuring unit 103 (step S10).
In response to this, the distance measuring unit 103 extracts a portion of the projection image PI from the image data of the screen S imaged by the screen imaging unit 101 (see FIGS. 7C and 7F). The projection image PI thus extracted is a test pattern.
Therefore, the distance measuring unit 103 measures the length dimensions X1, X2, Y1, and Y2 of the vertical and horizontal four sides of the test pattern, and transmits the measurement results to the main control unit 211.

When the main control unit 211 receives the length dimensions X1, X2, Y1, and Y2 of the vertical and horizontal sides of the test pattern, the CPU 211a calls the data table T from the NVRAM 211d (step S15).
As shown in FIG. 8, the data table T includes a screen S and an optical axis of the screen imaging unit 101 for each sample of length dimensions X1, X2, Y1, and Y2 of a plurality of test patterns. An angle θ is defined, and video shooting ranges θL and θR that define an operation estimation range PA to be cut from the peripheral image SI captured by the video imaging unit 105 are defined.

7 and 9 should also be referred to.
When the screen imaging unit 101 images the screen S from the front (see FIGS. 9A and 9B), the projection image PI extracted by the distance measuring unit 103, that is, the vertical and horizontal sides of the test pattern illustrated in FIG. The length dimensions X1, X2, Y1, and Y2 are, for example, 100 cm, 100 cm, 70 cm, and 70 cm, respectively. The lengths of the horizontal upper and lower sides match each other, and the lengths of the vertical left and right sides also match each other.
When this is referred to in the data table T, the angle θ is 90 degrees, which matches the state shown in FIG.
Further, when the image projection range is viewed with reference to the data table T, it can be seen that θL = 35 degrees and θR = 35 degrees.
Therefore, as shown in FIG. 9A, the operation estimation range PA to be cut from the peripheral image SI captured by the video imaging unit 105 may be set such that θL is 35 degrees and θR is 35 degrees.

On the other hand, when the screen imaging unit 101 images the screen S from the end direction (see FIGS. 7D and 7E), the projection image PI extracted by the distance measuring unit 103, that is, illustrated in FIG. For example, the length dimensions X1, X2, Y1, and Y2 of the vertical and horizontal sides of the test pattern are 150 cm, 150 cm, 90 cm, and 100 cm, respectively. The lengths of the horizontal upper and lower sides coincide with each other, whereas the vertical left and right sides are larger in Y2 on the right side than Y1 on the left side. This is because the front side image is captured larger.
When this is referred to in the data table T, the angle θ is 120 degrees, which matches the state shown in FIG.
Further, when the image projection range is viewed with reference to the data table T, it can be seen that θL = 120 degrees and θR = −35 degrees.
Therefore, as shown in FIG. 9B, the operation estimation range PA to be cut from the peripheral image SI captured by the video image capturing unit 105 may be set such that θL is 120 degrees and θR is −35 degrees.

  Next, returning to FIG. 6, when the CPU 211a calls the data table T from the NVRAM 211d in step S15, data matching the length dimensions X1, X2, Y1, Y2 of the vertical and horizontal four sides of the test pattern measured by the distance measuring unit 103 is obtained. It is determined whether or not there is (step S20).

As a result of the determination, if it is determined that data that matches the length dimensions X1, X2, Y1, and Y2 is defined in the data table T (YES in step S20), the CPU 211a sets the corresponding video shooting range value as data. Called and acquired from the table T (step S25).
As a result, the operation estimation range PA to be cut out from the peripheral image SI captured by the video imaging unit 105 is determined.

Subsequently, the CPU 211a issues a start command to the video image capturing unit 105 to capture peripheral images. In response to this, the video imaging unit 105 starts imaging, whereby a peripheral image SI as image data is obtained.
In the example of the peripheral image SI captured by the video imaging unit 105 illustrated in FIG. 10, a state where four people HB are sitting on the four chairs C prepared on the conference table MT is shown. . One person HB sitting in front of the left in the figure is trying to pick up the remote control 111.

If the peripheral image SI is obtained in this way, the next necessary thing is to determine an operation estimation range PA to be cut out from the peripheral image SI, and determine whether or not the remote controller 111 can be operated in this range. That is.
Therefore, the CPU 211a instructs the comparison / determination unit 107 to execute the comparison / determination process (step S35). At this time, the values (θL, θR) of the video shooting range obtained by calling from the data table T in step S25 are transmitted to the comparison determination unit 107.

The comparison / determination unit 107 that has received a command from the CPU 211a first determines an operation estimation range PA that is estimated to be operated by the remote controller 111 based on the received video shooting range values (θL, θR).
Next, the comparison / determination unit 107 analyzes the peripheral image SI and extracts the shape image A of the remote control from the operation estimation range PA. This process can be executed by an image recognition process for determining similarity to the remote controller shape image A stored in the storage unit 109.
The comparison determination unit 107 periodically transmits the result of the image recognition process to the CPU 211a regardless of whether or not the remote controller shape image A is extracted.

As shown in FIG. 6, the CPU 211a waits for reception of the determination result from the comparison determination unit 107 (step S40), and when receiving the determination result that the shape image A of the remote control is not extracted (step S40). (NO in S40), the state where the remote controller 111 is invalidated is maintained (step S45), and the process returns to step S5.
On the other hand, when the CPU 211a receives a determination result that the shape image A of the remote controller has been extracted from the comparison determination unit 107 (YES in step S40), the CPU 211a gives an instruction to time-capture an image to the comparison determination unit 107 ( Step S50).

The comparison / determination unit 107 obtains image data of the continuously captured peripheral image SI in accordance with an instruction to time-capture video. Alternatively, video shooting is executed.
Then, as illustrated in FIG. 10, the shape image B of the human hand approaches the shape image A of the remote controller, and it is determined whether it overlapped. If the shape image B of the human hand approaches and overlaps the shape image A of the remote control, it is estimated that the remote control 111 may be operated. Therefore, the comparison / determination unit 107 executes image recognition processing to determine whether or not such a time change has occurred in the operation estimation range PA in the continuously captured peripheral image SI.
The comparison determination unit 107 periodically transmits the determination result to the main control unit 211.

As illustrated in FIG. 6, the CPU 211a waits for reception of a determination result from the comparison determination unit 107 (step S55).
When the determination result obtained from the comparison determination unit 107 indicates that the remote controller 111 is not operable (NO in step S55), the CPU 211a returns to the process in step S5.

(2) The second process executed by the second remote control unit will be described.
On the other hand, when the determination result obtained from the comparison determination unit 107 indicates that the remote controller 111 can be operated (YES in step S55), the CPU 211a executes a process of enabling the remote controller (step S60). This is because the use of the remote controller 111 intended to operate the own device is expected.
The determination process of step S55 and the process of enabling the remote control 111 of step S112 are the second process (process, function, means) executed by the second remote control unit.

Here, the specific contents of the processing for enabling the remote controller 111 will be described.
There are three types of processing.
The first is processing for allowing the operation control unit 81 to receive an instruction signal that is wirelessly output from the remote control 111. That is, the main control unit 211 normally maintains the wireless communication function of the operation control unit 81 in a stopped state. Under such a premise, the process of enabling the wireless communication function of the operation control unit 81 is the process of enabling the remote controller 111 (step S60).

  The second is processing for permitting input of an instruction signal from the operation control unit 81 to the main control unit 211. That is, when the operation control unit 81 receives an instruction signal wirelessly output from the remote controller 111, the main control unit 211 does not normally accept the received instruction signal. Under such a premise, the process in which the main control unit 211 receives the instruction signal wirelessly output from the remote control 111 from the operation control unit 81 is the process of enabling the remote control 111 (step S60).

  The third is processing for causing the main control unit 211 to execute control of each unit according to the input instruction signal. That is, even if the main control unit 211 receives an instruction signal wirelessly output from the remote control 111 from the operation control unit 81, it is normally ignored. Under such a premise, the process of controlling each unit in accordance with the instruction signal from the remote control 111 received from the operation control unit 81 is the process of enabling the remote control 111 (step S60).

Here, the operation and effect of the above-described embodiment will be described.
As described above, according to the present embodiment, the presence / absence of the remote controller 111 intended to operate the own device is estimated based on the peripheral image SI captured by the video imaging unit 105, and it is determined that there is such a remote controller 111. Only in this case, the control of each unit according to the instruction signal wirelessly output from the remote controller 111 can be executed, so that a response to an unintended remote control operation can be prevented without requiring a special setting operation.

  According to the present embodiment, the first remote control unit determines the operation estimation range from the aspect ratio of the projection image captured by the screen imaging unit 101. Therefore, the first remote control unit accurately estimates the operation using a relatively simple method. A range can be determined.

  According to the present embodiment, the first remote control unit obtains the remote controller shape image A and the human hand shape image B from the peripheral image SI within the operation estimation range PA imaged by the video imaging unit 105. When the extracted shape image A of the remote control overlaps the shape image B of the human hand, it is determined that the remote control 111 can be operated. Therefore, it is possible to accurately operate the remote control using a relatively simple method. Presence / absence can be determined.

  According to the present embodiment, since the shape of the hand of the remote controller is determined as the shape image B of the human hand, the presence or absence of the operation possibility of the remote controller 111 can be determined with higher certainty. Can do.

  According to the present embodiment, the second remote control unit permits the operation control unit 81 to receive the instruction signal wirelessly output from the remote control 111 only when it is determined that the remote control 111 can be operated. Therefore, the control prohibition state of each unit according to the instruction signal from the remote controller 111 can be easily canceled simply by enabling the wireless communication function of the operation control unit 81.

  According to the present embodiment, the second remote control unit permits the operation control unit 81 to input an instruction signal to the main control unit 211 only when it is determined that the remote control 111 can be operated. Therefore, the control prohibition state of each unit according to the instruction signal from the remote controller 111 can be easily canceled simply by enabling the signal output function of the operation control unit 81.

  According to the present embodiment, the second remote control unit causes the main control unit 211 to execute control of each unit according to the input instruction signal only when it is determined that the remote control 111 is likely to be operated. Therefore, it is possible to cancel the prohibited state of the control of each unit according to the instruction signal from the remote controller 111 only by the control on the main control unit 211 side without changing the function of the operation control unit 81.

  According to the present embodiment, since the main control unit 211 includes the first remote control unit, the main control unit 211 and the first remote control unit can be used together, and hardware resources can be simplified. And reducing the number of parts.

  According to the present embodiment, since the main control unit 211 includes the second remote control unit, the main control unit 211 and the second remote control unit can be used together, and hardware resources can be simplified. And reducing the number of parts.

<Modification>
In implementation, various changes and modifications exemplified below are possible.
(1) Modification 1
In the present embodiment, an example in which the present invention is applied to a DLP projector using a DMD element 56 as an image display element is shown.
On the other hand, the installation process according to the present embodiment may be applied to other types of light valve projectors, such as a liquid crystal projector, an LCOS projector, and a GLV projector. Alternatively, the present invention is not limited to the light valve method, and can be applied to a CRT projector.

(2) Modification 2
In the present embodiment, hardware resources for executing remote control selection processing are distributed to a plurality of processors and the like. That is, an example is shown in which the CPU 211a of the main control unit 211, the distance measurement unit 103, and the comparison determination unit 107 cooperate to execute remote control selection processing.
On the other hand, at the time of implementation, the remote control selection process may be executed by a single processor without adopting such a hardware resource distribution structure.
Or, conversely, the remote control selection process may be executed while using another hardware resource.

(3) Modification 3
In the present embodiment, an example is shown in which a control program that causes the CPU 211a to execute remote control selection processing is fixedly recorded in the ROM 211b.
On the other hand, the control program is not limited to an element that stores data fixedly, such as the ROM 211b, but may be recorded and stored in a data rewritable memory while data can be stored. By doing so, it becomes easy to cope with the version upgrade of the control program.

(4) Others It goes without saying that all modifications and changes other than the above (1) to (3) are allowed.

<Examples of Embodiments and Effects of the Present Invention>
<First aspect>
The video projection apparatus 1 according to this aspect is a video projection apparatus that generates and projects a projection image based on input video data. The video projection apparatus 1 mainly receives a main control unit 71 that controls each unit and an instruction signal received from a remote controller 111. An operation control unit 81 that outputs to the control unit 71, a video imaging unit 105 that captures a peripheral image of the own device, and an image within a remote control operation range that is unique to the device among peripheral images captured by the video imaging unit 105. The main control unit 71 that analyzes and determines whether or not there is an operation on the apparatus using the remote control, and the instruction signal received from the remote control 111 when it is determined that the operation is performed on the apparatus using the remote control 111 And a main control unit 71 that permits control by the corresponding main control unit 71.
According to this aspect, the presence / absence of a remote control intended to operate the own device is determined based on the peripheral image captured by the video imaging unit 105, and the instruction received from the remote control when it is determined that there is such a remote control Since control of each part according to a signal is permitted, reaction to unintended remote control operation can be prevented without requiring special setting work.

<Second aspect>
The video projection apparatus 1 according to this aspect includes a screen imaging unit 101 that captures a projection image projected on a projection surface, and the main control unit 71 is based on the aspect ratio of the projection image captured by the screen imaging unit 101. A remote control operation range is set.
According to this aspect, since the remote control operation range is set from the aspect ratio of the projection image captured by the screen imaging unit 101, the operation estimation range can be set with high accuracy using a relatively simple method.

<Third aspect>
The main control unit 71 of this aspect extracts the shape image of the remote control and the shape image of the human hand from the image within the remote control operation range captured by the video image capturing unit 105, and the shape image of the human hand is extracted as the shape image of the remote control. It is characterized by determining whether or not.
According to this aspect, the remote controller shape image and the human hand shape image are extracted from the image within the remote control operation range imaged by the video imaging unit 105, and whether the human hand shape image overlaps the remote controller shape image. Therefore, it is possible to accurately determine whether or not the remote controller can be operated using a relatively simple method.

<4th aspect>
The main control unit 71 according to this aspect is characterized in that a shape image for gripping the remote control is used as a shape image of a human hand.
According to this aspect, since the shape image to be gripped of the remote control is used as the shape image of the human hand and is determined as the shape image of the human hand, the presence or absence of the operability of the remote control is more reliably determined. Can be determined.

<5th aspect>
The video projection system according to this aspect includes a plurality of the video projection apparatuses according to any one of the first to fourth aspects, and operates each video projection apparatus using one remote controller.
According to this aspect, since each video projector is operated using one remote controller, it is possible to prevent each video projector from reacting to an unintended remote controller operation without requiring a special setting operation. it can.

<Sixth aspect>
The remote control operation ranges unique to each video projection apparatus of this aspect are different from each other.
According to this aspect, the remote control operation ranges unique to the respective video projection apparatuses are different, so that the reaction of each video projection apparatus with respect to an unintended remote control operation can be prevented.

<Seventh aspect>
The remote control selection method of the video projection device 1 of this aspect includes a main control unit 71 that controls each unit in accordance with an instruction signal received from the remote control 111, and a video imaging unit 105 that captures a peripheral image of the own device. A method for selecting a remote control of a video projection apparatus 1 for generating and projecting a projection image based on input video data,
Of the peripheral images captured by the video image capturing unit 105, an image within the remote control operation range unique to the device is analyzed to determine whether or not the device is operated using the remote control (step S40). When the operation is determined to be performed on the apparatus, the control by the main control unit 71 according to the instruction signal received from the remote controller 111 is permitted (step S60).
According to this aspect, the presence / absence of a remote control intended to operate the own device is determined based on the peripheral image captured by the video imaging unit 105, and the instruction received from the remote control when it is determined that there is such a remote control Since control of each part according to a signal is permitted, reaction to unintended remote control operation can be prevented without requiring special setting work.

<Eighth aspect>
The program according to this aspect causes a processor to execute each step according to the seventh aspect.
According to this aspect, since each step can be executed by the CPU, reaction to an unintended remote control operation can be prevented without requiring a special setting operation.

  DESCRIPTION OF SYMBOLS 1 ... Video projection apparatus, 11 ... Housing, 71 ... Main control part, 81 ... Operation control part, 101 ... Screen imaging part, 105 ... Video imaging part, 111 ... Remote control, A ... Shape image of remote control, B ... Human hand Shape image, PA ... operation estimation range, S ... screen (projection surface), SI ... peripheral image

JP 2010-186036 A

Claims (8)

A video projection apparatus that generates and projects a projection image based on input video data,
A main control unit for controlling each unit;
An operation control unit for outputting an instruction signal received from a remote control to the main control unit;
A video imaging unit that captures a peripheral image of the own machine;
A first remote control unit that analyzes an image within a remote control operation range unique to the device among the peripheral images captured by the video imaging unit, and determines whether there is an operation on the device using the remote control; ,
A second remote control unit that permits control in the main control unit in response to an instruction signal received from the remote control when it is determined that the operation is performed on the device using the remote control;
A video projection apparatus comprising: A projection surface imaging unit that images the projection image projected on the projection surface;
The first remote control unit sets the remote control operation range based on the aspect ratio of the projection image captured by the projection surface imaging unit.
The video projection apparatus according to claim 1, wherein: The first remote control unit extracts a shape image of the remote control and a shape image of a person's hand from an image within the remote control operation range captured by the video imaging unit, and the person's hand shape image is extracted to the shape image of the remote control. Determine if hand shape images overlap,
The video projection apparatus according to claim 1 or 2, wherein The first remote control unit uses a shape image for gripping the remote control as a shape image of the human hand,
The video projection device according to claim 3. A plurality of the video projectors according to any one of claims 1 to 4,
A video projection system, wherein each video projection device is operated using one remote controller.   The video projection system according to claim 5, wherein the remote control operation ranges unique to the video projection apparatuses are different from each other. A main control unit that controls each unit in accordance with an instruction signal received from the remote control;
A video image pick-up unit that picks up a peripheral image of the own device, and a remote control selection method for a video projection device that generates and projects a projection image based on input video data,
A first step of analyzing an image within a remote control operation range unique to the device among the peripheral images captured by the video imaging unit, and determining whether or not there is an operation on the device using the remote control;
A second step of permitting control in the main control unit in response to an instruction signal received from the remote control when it is determined that the operation is performed on the device using the remote control;
A remote control selection method for a video projection apparatus, comprising:   A program for causing a processor to execute each step according to claim 7.

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