JP6318488B2 - Image projection apparatus and program - Google Patents

Description

  The present disclosure relates to a technology of a video projection device such as a projector that projects a video.

  2. Description of the Related Art Conventionally, there are image projection apparatuses such as projectors that turn on a light source lamp and project an image on a screen or the like.

  This type of video projection device is connected to a video output device and projects a video input from the video output device onto a screen or the like. The video output device is a device that can be connected to a video projection device and output video to the video projection device, and examples thereof include devices such as a personal computer and a video camera.

  However, since the above-described video projection apparatus starts projection of the video input from the video output apparatus by the operator operating the video projection apparatus, it is necessary to intervene manually to start the projection. Also, even if projection is started manually, the video output device performs a predetermined operation as expected, and the desired video is not displayed on the screen or the like until a desired video is received from the video output device. The image is projected on a screen or the like. The blank video means a video in a state where a desired video inputted from the video output device is not projected on a screen or the like, and means a white video, a black video, or the like. For this reason, while a useless blank image is projected by the image projection apparatus, the image projection apparatus consumes power wastefully. For this reason, there is a need for a video projection apparatus that can automatically start projection and prevent unnecessary blank video projection.

  In addition, as a technical document filed prior to the present invention, Patent Document 1 (Japanese Patent Laid-Open No. 2007-178635) discloses that a projector is based on a time table in which lamp turn-on time and turn-off time are combined. It is disclosed that the lamp can be switched on and off to switch between displaying an image on the screen and hiding it.

  The technique disclosed in Patent Document 1 can automatically start projection with a projector. However, even with the technique disclosed in Patent Document 1, the video output device connected to the projector performs a predetermined operation as expected, and the screen is desired until the projector receives a desired video from the video output device. This will result in a wasteful blank image being projected.

  An object of the present disclosure is to automatically start projection and to prevent unnecessary blank video projection. The blank video means a video in a state where a desired video inputted from the video output device is not projected on a screen or the like, and means a white video, a black video, or the like.

An image projection apparatus according to an aspect of the present disclosure includes:
A video projection device that projects video input from a video output device,
A video projection device that projects video input from a video output device,
Storage means for storing a start time for starting projection;
Detecting means for detecting video input from the video output device;
First control means for controlling the video output device when the start time is reached;
When the video output device is controlled by the first control means, and the video output device is performing a predetermined operation as expected, a light source lamp is turned on, and the video input from the video output device is projected. It possesses a second control means for starting a the,
When the detection means detects the video, the first control means determines that the video output device is performing a predetermined operation as expected, and supplies power to the second control means from a power supply unit. Supply
The second control means is activated when power is supplied from the power supply unit, and turns on the light source lamp .

  According to one aspect of the present disclosure, it is possible to automatically start projection and prevent unnecessary blank video projection.

It is a figure which shows the system configuration example of the video projection system of this embodiment. It is a figure which shows the structural example of a video projector. It is a figure which shows the processing operation example of a video projector. It is a figure which shows the example of information memorize | stored in a video projector.

(Outline of Embodiment of Video Projection Device According to One Aspect of Present Disclosure)
First, an overview of an embodiment of a video projection apparatus according to an aspect of the present disclosure will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration example of a video projection device according to an aspect of the present disclosure.

  The video projection device 100 according to an aspect of the present disclosure is a video projection device 100 that projects a video input from the video output device 200.

  The video projection apparatus 100 according to an aspect of the present disclosure includes a storage unit, a first control unit, and a second control unit.

  The storage means stores a start time for starting projection. For example, the power supply control unit 103 functions as the storage unit.

  The first control means performs a control process for controlling the video output device 200 when the start time comes. For example, the power control unit 103 functions as the first control unit.

  The second control means controls the video output device 200 by the first control means, and turns on the light source lamp 106 when the video output device 200 is performing a predetermined operation as expected, and the video output device 200. The control process which starts the projection of the image input from is performed. The projection control unit 105 functions as the second control unit.

  The video projection device 100 according to an aspect of the present disclosure controls the video output device 200 when the start time comes. Then, when the video output device 200 is performing a predetermined operation as expected, the light source lamp 106 is turned on and projection of the video input from the video output device 200 is started. Thereby, it is possible to automatically start projection and to prevent unnecessary blank video projection. Hereinafter, an image projection device 100 according to an aspect of the present disclosure will be described in detail with reference to the accompanying drawings. In the following embodiments, a video projection system having the video projection device 100 and the video output device 200 will be described as an example.

<Configuration example of video projection system>
First, a system configuration example of a video projection system according to the present embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating a system configuration example of a video projection system.

  The video projection system of the present embodiment includes a video projection device 100 and a video output device 200.

  The video output device 200 is a device that outputs a video signal to the video projection device 100. Examples of the video output device 200 include devices such as a personal computer and a video camera. In addition, a Tongle-type small device such as a USB memory may be used. Any device can be used as the video output device 200 as long as it can output a video signal to the video projection device 100.

  The video projection device 100 is a device that projects the video signal input from the video output device 200 onto a screen or the like. Examples of the video projection device 100 include a device such as a projector.

  In the video projection system shown in FIG. 1, a video projection device 100 and a video output device 200 are connected by USB (Universal Serial Bus) or the like, HDMI (High Definition Multimedia Interface) (registered trademark) or the like.

  The video projection device 100 of the present embodiment supplies power to the video output device 200 via a USB or the like. The video output device 200 is activated based on the power supplied from the video projection device 100, performs a predetermined operation set in advance, and sends a desired video signal set in advance from the video output device 200 via HDMI or the like. Output to the image projection apparatus 100. The video projection device 100 turns on the light source lamp when the video output device 200 performs a predetermined operation as expected after supplying power to the video output device 200 and receives a desired video signal from the video output device 200. To do. Then, the video projection device 100 projects a desired video signal received from the video output device 200 onto a screen or the like.

  The video projection system according to the present embodiment outputs a desired video signal from the video output device 200 to the video projection device 100, and the video projection device 100 projects the desired video signal input from the video output device 200. Any connection configuration is applicable if possible.

<Configuration Example of Video Projection Device 100>
Next, a configuration example of the video projector 100 according to the present embodiment will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration example of the video projector 100 according to the present embodiment.

  The video projector 100 according to the present embodiment includes a power supply unit 101, an RTC (Real Time Clock) 102, a power supply control unit 103, an input detection unit 104, a projection control unit 105, and a light source lamp 106. In addition, the first switch 110, the second switch 111, and the third switch 112 are provided.

  The power supply unit 101 is a supply source that supplies power. Examples of the power supply unit 101 include an AC adapter and a battery. The power of the power supply unit 101 is supplied to the video output device 200, the RTC 102, the power supply control unit 103, the input detection unit 104, the projection control unit 105, the light source lamp 106, and the like.

  The RTC 102 is a watch-specific chip, and always operates while receiving power from the built-in battery while the video projection device 100 is turned off. The RTC 102 can also operate by receiving power supply from the power supply unit 101.

  The power supply control unit 103 is a dedicated chip that controls the power supply of the video projector 100. The power supply control unit 103 operates constantly upon receiving power supply from the power supply unit 101.

  When power is supplied from the power supply unit 101 and the input detection unit 104 is activated, the input detection unit 104 starts detection confirmation of whether or not a video signal is input from the video output device 200. When detecting that a video signal has been input, the input detection unit 104 outputs a detection signal indicating that the video signal has been input to the power supply control unit 103.

  When the power is supplied from the power supply unit 101 and started up, the projection control unit 105 starts lighting the light source lamp 106 and starts projecting the video signal input from the video output device 200.

  The light source lamp 106 emits high-luminance light. When the projection control unit 105 lights the light source lamp 106, the video signal input from the video output device 200 is projected onto a screen or the like. Further, since the projection control unit 105 turns off the light source lamp 106, the video signal is not projected onto the screen or the like.

  The first switch 110 switches whether to supply the power of the power supply unit 101 to the video output device 200. When the first switch 110 is on, the power of the power supply unit 101 is supplied to the video output device 200. When the first switch 110 is off, the power of the power supply unit 101 is not supplied to the video output device 200.

  The second switch 111 switches whether to supply the power of the power supply unit 101 to the input detection unit 104. When the second switch 111 is on, the power of the power supply unit 101 is supplied to the input detection unit 104. When the second switch 111 is off, the power of the power supply unit 101 is not supplied to the input detection unit 104.

  The third switch 112 switches whether the power of the power supply unit 101 is supplied to the projection control unit 105 or the light source lamp 106. When the third switch 112 is on, the power of the power supply unit 101 is supplied to the projection control unit 105 and the light source lamp 106. When the third switch 112 is off, the power of the power supply unit 101 is not supplied to the projection control unit 105 or the light source lamp 106.

<Example of Processing Operation of Video Projection Apparatus 100>
Next, an example of processing operation of the video projection apparatus 100 of the present embodiment will be described with reference to FIGS. FIG. 3 is a diagram illustrating an example of processing operation of the video projection apparatus 100 according to the present embodiment.

  The power supply control unit 103 checks the time information of the RTC 102 (step S1) and determines whether or not the projection start time has come (step S2). The projection start time is stored in advance in the power supply control unit 103, for example. The projection end time is also stored in advance in the power control unit 103 in association with the projection disclosure time. For example, the operator can set the projection start time and the projection end time by operating an operation unit (not shown) of the image projection apparatus 100. When the projection disclosure time and the projection end time are set in the video projection apparatus 100, the projection start time and the projection end time are associated with each other and stored in the power supply control unit 103.

  When the projection start time comes (step S2 / Yes), the power supply control unit 103 turns on the first switch 110 and the second switch 111 and starts the first power supply of the power supply unit 101 (step S3). . Further, the power supply control unit 103 starts a timer count (step S4).

  When the first power supply of the power supply unit 101 is started, the power of the power supply unit 101 is supplied to the video output device 200 via the first switch 110. The video output device 200 is activated when power is supplied from the power supply unit 101, performs a predetermined operation preset in the video output device 200, and outputs a desired video signal from the video output device 200 to the video projection device 100. To do. A desired video signal to be output to the video projection device 100 is preset in the video output device 200. Alternatively, a desired video signal is output to the video projection device 100 under the control of the video projection device 100.

  When the first power supply of the power supply unit 101 is started, the power of the power supply unit 101 is supplied to the input detection unit 104 via the second switch 111. The input detection unit 104 is activated when power is supplied from the power supply unit 101, and starts detecting whether or not a video signal has been input from the video output device 200 (step S5). When a video signal is input from the video output device 200, the input detection unit 104 outputs a detection signal indicating that the video signal has been input to the power supply control unit 103.

  When receiving the detection signal from the input detection unit 104, the power supply control unit 103 determines that the video signal has been input from the video output device 200 (step S6 / Yes). In this case, the power supply control unit 103 turns on the third switch 112 and starts the second power supply of the power supply unit 101 (step S9). When the second power supply of the power supply unit 101 is started, the power of the power supply unit 101 is supplied to the projection control unit 105 and the light source lamp 106 via the third switch 112. The projection control unit 105 is activated when power is supplied from the power supply unit 101, starts lighting the light source lamp 106, and starts projecting the video signal input from the video output device 200 (step S10).

  When power is supplied from the power supply unit 101 and the projection control unit 105 is activated, the projection control unit 105 acquires time information from the RTC 102, and the projection control unit 105 itself starts measuring time. In addition, the projection control unit 105 acquires a projection end time associated with the projection start time from the power supply control unit 103.

  If the power supply control unit 103 does not receive the detection signal from the input detection unit 104 until the timer count is completed, the video signal is not input from the video output device 200 until the timer count is completed. (Step S7 / Yes). In this case, the power supply control unit 103 turns off the first switch 110 and the second switch 111, stops the first power supply of the power supply unit 101 (step S8), and ends the process (End). When the first power supply of the power supply unit 101 is stopped, power is not supplied to the video output device 200 and the input detection unit 104, and the operations of the video output device 200 and the input detection unit 104 are stopped. The time from the start of the timer count to the completion of the timer count can be arbitrarily set.

  After starting projection of the video signal input from the video output device 200 in step S10, the projection control unit 105 determines whether or not the projection end time has come based on the time information measured by the projection control unit 105 itself. (Step S11).

  When the projection end time comes (step S11 / Yes), the projection control unit 105 turns off the light source lamp 106 and ends the projection (step S12). Next, the projection control unit 105 outputs a power supply stop signal to the power supply control unit 103. When the power supply control unit 103 receives a power supply stop signal from the projection control unit 105, the power supply control unit 103 turns off the first switch 110, the second switch 111, and the third switch 112, and first and second powers of the power supply unit 101. Supply is stopped (step S13), and the process is terminated (End). When the first power supply of the power supply unit 101 is stopped, power is not supplied to the video output device 200 and the input detection unit 104, and the operations of the video output device 200 and the input detection unit 104 are stopped. Further, when the second power supply of the power supply unit 101 is stopped, power is not supplied to the projection control unit 105 and the light source lamp 106, and thus the operation of the projection control unit 105 is stopped.

<Operation / Effect of Video Projection Apparatus 100 of Present Embodiment>
As described above, the video projector 100 according to the present embodiment starts the first power supply (step S3) and supplies power to the video output device 200 when the projection start time comes (step S2 / Yes). To do. When the video output device 200 performs a predetermined operation as expected and receives a desired video signal from the video output device 200 (Yes in step S6), the video projection device 100 turns on the light source lamp 106 and outputs the video signal. Is started (step S10). Thereby, the video projection apparatus 100 of the present embodiment can automatically start projection and prevent unnecessary blank video projection. The blank video means a video in a state where a desired video signal input from the video output device 200 is not projected on a screen or the like, and means a white video, a black video, or the like.

  Further, the video projection device 100 of the present embodiment separates the power supply system of the input detection unit 104 and the power supply system to the projection control unit 105 and the light source lamp 106. Then, power is supplied to the input detection unit 104 in conjunction with power supply to the video output device 200, and the input detection unit 104 is activated first. When the video signal input from the video output device 200 is detected by the input detection unit 104, power supply to the projection control unit 105 and the light source lamp 106 is started, the light source lamp 106 is turned on, and the video output device 200 is turned on. Projection of the video signal input from is started. As a result, when the video signal input from the video output device 200 is detected by the input detection unit 104, power supply to the projection control unit 105 and the light source lamp 106 is started, thereby reducing the power consumption of the video projection device 100. can do. In addition, when the video signal input from the video output device 200 is detected by the input detection unit 104, the projection of the video signal input from the video output device 200 is started, thereby preventing unnecessary blank video projection. Can do.

  In the processing operation example illustrated in FIG. 3, the input detection unit 104 is activated when power is supplied from the power supply unit 101, and starts checking whether a video signal is input from the video output device 200. (Step S5). In this case, the input detection unit 104 confirms the input of the video signal even after the projection is started in step S10, and stops the projection when the video signal input from the video output device 200 is interrupted and cannot be detected. It is also possible to do so. In this case, for example, the input detection unit 104 outputs a non-detection signal indicating that the video signal cannot be detected to the projection control unit 105. When the projection control unit 105 receives a non-detection signal from the input detection unit 104, the projection control unit 105 turns off the light source lamp 106 and ends the projection. Next, the projection control unit 105 outputs a power supply stop signal to the power supply control unit 103. When the power supply control unit 103 receives a power supply stop signal from the projection control unit 105, the power supply control unit 103 turns off the first switch 110, the second switch 111, and the third switch 112, and first and second powers of the power supply unit 101. The supply is stopped and the process is terminated. Thereby, when the video signal input from the video output device 200 is interrupted and cannot be detected by the input detection unit 104, the projection can be stopped.

Further, in the processing operation example shown in FIG. 3, the projection control unit 105 starts when power is supplied from the power supply unit 101, starts lighting the light source lamp 106, and outputs the video signal input from the video output device 200. Projection is started (step S10). In this case, the projection control unit 105 determines whether or not the video signal input from the video output device 200 is a desired video signal that satisfies a preset condition. In the case of a desired video signal, the light source lamp 106 can be turned on and the projection of the video signal input from the video output device 200 can be started. Examples of the preset conditions include the following conditions. The following conditions are preferably stored in association with the projection start time and the projection end time. In the above description, the projection disclosure time and the projection end time are stored in the power supply control unit 103 as an example. However, the location for storing the projection start time and the projection end time is not particularly limited, and can be stored in any location. However, it is necessary to be able to refer to the power control unit 103 and the projection control unit 105.
The video signal input from the video output device 200 is a moving image.
The video signal has a desired resolution (for example, a full high-definition image).

  The above-described embodiment is a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiment alone, and various modifications are made without departing from the gist of the present invention. Implementation is possible.

  For example, in the above-described embodiment, the video projection device 100 supplies power to the video output device 200 when the projection start time comes, and causes the video output device 200 to perform a predetermined operation as expected. Yes. However, if the video output device 100 can control the video output device 200 and cause the video output device 200 to perform a predetermined operation as expected when the video projection device 100 reaches the projection start time, control other than power supply is possible. It is also possible to perform. For example, when there is a power supply source on the video output device 200 side, when the projection start time comes, the video projection device 100 controls the video output device 200 to turn on the power of the video output device 200 and output the video. The apparatus 200 is caused to perform a predetermined operation as expected. It is also possible to output a desired video signal from the video output device 200 to the video projection device 100. When the projection start time comes, the video output device 200 is controlled to cause the video output device 200 to perform a video output operation such as a playback operation. It is also possible to output a desired video signal from the video output device 200 to the video projection device 100.

  In the above-described embodiment, the case where the video projection device 100 and the video output device 200 are connected in a one-to-one manner has been described as an example. However, a configuration in which the video projection device 100 and the video output device 200 are connected in a many-to-many manner is also possible.

  In this case, as shown in FIG. 4, the device information of the control target video output device 200 controlled by each video projection device 100 is stored in each video projection device 100 in association with the projection start time and the projection end time. I will leave. The device information is information for specifying the video output device 200 to be controlled. Thus, each video projection device 100 controls the control target video output device 200 based on the device information associated with the projection start time when the projection start time is reached, and outputs the control target video output. A desired video signal can be output from the apparatus 200. In this case, video information for specifying what video signal is output from the video output device 200 to be controlled is also stored in the video projection device 100 in association with the projection start time, the projection end time, and the device information. Is also possible. The video information is information for specifying a video signal to be output from the video output device 200 to be controlled. When the video information is received from the video projection device 100, the video output device 200 outputs a video signal corresponding to the video information to the video projection device 100. Thereby, the video projection apparatus 100 can receive a desired video signal from the video output apparatus 200.

  Further, the control operation in the video projection apparatus 100 of the present embodiment described above can be executed using hardware, software, or a combined configuration of both.

  When executing processing using software, it is possible to install and execute a program in which a processing sequence is recorded in a memory in a computer incorporated in dedicated hardware. Alternatively, it can be installed in a memory in a general-purpose computer capable of executing various processes and executed.

  For example, the program can be recorded in advance on a hard disk or ROM (Read Only Memory) as a recording medium. Alternatively, the program can be stored (recorded) temporarily or permanently in a removable recording medium. Such a removable recording medium can be provided as so-called package software. Examples of the removable recording medium include various recording media such as a magnetic disk and a semiconductor memory.

  The program is installed in the computer from the removable recording medium as described above. In addition, it is wirelessly transferred from the download site to the computer. In addition, it is transferred to a computer via a network by wire.

  In addition, the video projection device 100 according to the present embodiment is not only executed in time series according to the processing operation described in the above embodiment, but also in parallel with the processing capability of the device that executes the processing, or as necessary. Alternatively, it can be constructed to execute individually.

  Note that the video projection apparatus 100 according to the present embodiment can automatically start and end the projection based on the projection start time and the projection end time, and thus is suitable for applications such as digital signage.

DESCRIPTION OF SYMBOLS 100 Image | video projection apparatus 200 Image | video output apparatus 101 Power supply part 102 RTC
DESCRIPTION OF SYMBOLS 103 Power supply control part 104 Input detection part 105 Projection control part 106 Light source lamp 110 1st switch 111 2nd switch 112 3rd switch

JP 2007-178635 A

Claims (6)

A video projection device that projects video input from a video output device,
Storage means for storing a start time for starting projection;
Detecting means for detecting video input from the video output device;
First control means for controlling the video output device when the start time is reached;
When the video output device is controlled by the first control means, and the video output device is performing a predetermined operation as expected, a light source lamp is turned on, and the video input from the video output device is projected. Second control means for starting
When the detection means detects the video, the first control means determines that the video output device is performing a predetermined operation as expected, and supplies power to the second control means from a power supply unit. Supply
The image projection apparatus, wherein the second control unit is activated when power is supplied from the power supply unit, and turns on the light source lamp. The first control means supplies power from the power supply unit to the detection means when the start time comes,
The video projection apparatus according to claim 1, wherein the detection unit is activated when power is supplied from the power supply unit and starts detecting the video.   The said 2nd control means turns on the said light source lamp, when the image | video input from the said image | video output device is an image | video which satisfy | fills predetermined conditions, The said light source lamp is turned on. The image projection apparatus described. The storage means stores an end time for ending projection in association with the start time,
The second control means turns off the light source lamp when the end time is reached, ends the projection of the video,
The said 1st control means stops supply of the electric power from the said power supply part to the said 2nd control means, when the projection of the said image | video is complete | finished. The video projection device according to any one of the above. The storage means stores device information of a video output device to be controlled in association with the start time,
Claim wherein the first control means, when the now start time, which based on the device information associated with the start time, controls the image output device of the controlled object, it is characterized by The video projection device according to claim 1. A program to be executed by a computer of a video projection device that projects video input from a video output device,
Detection processing for detecting video input from the video output device;
A first control process for controlling the video output device when the start time stored in the storage means for storing a start time for starting projection is reached;
When the video output device is controlled by the first control processing, and the video output device is performing a predetermined operation as expected, a light source lamp is turned on, and the video input from the video output device is projected. And causing the computer to execute a second control process for starting
In the first control process , when the detection process detects the video, it is determined that the video output device is performing a predetermined operation as expected, and power is supplied from the power supply unit to the second control process . Supply
The second control process starts when power is supplied from the power supply unit, and turns on the light source lamp.

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