JP2007178636A - Projection type video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve a projection type video display device for performing display of videos as per the prescribed schedule. <P>SOLUTION: A projector 100 can perform display of the video as per the prescribed schedule, by switching that it displays the video on a screen S and that it does not display, on the basis of a time table combined by "a lighting time" being the time period for displaying the video on the screen S and "a start time" being the time period, concerning an interval without displaying the video on the screen S. When the video is not displayed on the screen S, electrical energy can be saved by switching off a lamp 3 or lowering the output of the lamp 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a projection-type image display device.

  2. Description of the Related Art Conventionally, there is known a projection type image display device such as a projector that displays an image or the like by modulating light emitted from a light source with an optical element such as DMD and projecting it on a screen through an optical lens.

And when multiple presenters make various presentations and presentations according to a predetermined schedule while displaying images with a projector, each presenter can use it as a guideline to keep their announcements within their time limit. There is known a projector that projects time, presentation elapsed time, remaining time, and the like together with a video on a screen (for example, see Patent Document 1).
There is also known a presentation system that displays the current time, the elapsed presentation time, the remaining time, etc. on a display unit of a remote control device (remote controller) carried by a presenter to operate the projector (see, for example, Patent Document 2). ).

There is also known a display device that displays desired characters, pictograms, and the like by selectively turning on and off a plurality of light emitting elements arranged in a dot matrix (see, for example, Patent Document 3).
JP 2001-109064 A JP 2003-162274 A JP 2003-202849 A

  However, in the case of the above Patent Document 1 and Patent Document 2, even if the presenter recognizes the time limit related to the presentation and grasps the elapsed time after the start of the presentation, the announcement may be extended beyond the time limit, There was a problem that the presentation might end earlier, and the presentation might not proceed according to the scheduled timetable.

  In addition, in the case of Patent Document 3, an LED (Light Emitting Diode) is used as a light emitting element. Therefore, the timing for causing the light emitting element to emit light and the timing for turning it off can be set arbitrarily. Since the lamp used as the light source of the projector in Patent Document 2 once turns off, a predetermined time (for example, a time of about 1 to 3 minutes) is required until the next lighting can be performed. If the lamp is turned off after the presenter's presentation is finished, there is a problem that the video cannot be displayed by the projector even if the next presenter tries to start the presentation immediately.

  An object of the present invention is to provide a projection-type video display device capable of displaying video according to a predetermined schedule.

In order to solve the above-described problems, the invention described in claim 1 is a projection-type image display device that projects and displays an image on a screen by optically modulating light output from a light source lamp by a predetermined optical element. A storage unit that stores a timetable corresponding to a schedule for displaying video on the screen; a display timing of a video display on the screen in the timetable stored in the storage unit; and a next display Interval determination means for determining whether or not the length of the interval during which no video is displayed on the screen is greater than or equal to a predetermined time, and the interval determination means, wherein the interval length is predetermined If the light source lamp is turned off at the end of the previous display timing, When the first lamp control means for switching the image on the screen to non-display and the interval determination means determine that the length of the interval is not longer than a predetermined time, the light source lamp outputs at the end of the previous display timing. A second lamp control means for reducing the brightness of the light to be emitted, and the optical element at the end of the previous display timing in accordance with the second lamp control means reducing the brightness of the light output from the light source lamp. And optical element control means for switching the image on the screen to non-display.

  The invention according to claim 2 is a projection-type image display device that projects and displays an image on a screen by optically modulating light output from the light source lamp by a predetermined optical element, wherein the image is displayed on the screen. A storage means for storing a time table according to a schedule to be displayed; and a display timing of a video to be displayed on the screen in a time table stored in the storage means, and a next display timing, When the interval determination means for determining whether or not the length of the interval at which the video is not displayed on the screen is equal to or longer than a predetermined time and the interval determination means determines that the length of the interval is not equal to or longer than the predetermined time Control the optical element at the end of the previous display timing to switch the video on the screen to non-display An optical element control section that, characterized in that it comprises a.

  According to a third aspect of the present invention, in the projection type image display device according to the second aspect, the optical element control unit controls the optical element to switch the image on the screen to non-display. Reduces the luminance of the light output from the light source lamp.

According to the first aspect of the present invention, the projection display apparatus displays an image on the screen by optically modulating the light output from the light source lamp based on the time table stored in the storage means. Can do.
In particular, the projection-type image display device has a length of an interval in which no image is displayed on the screen, which is between the previous display timing and the next display timing in the time table stored in the storage means. However, it is possible to adjust the light output of the light source lamp in the interval not displaying the video by determining whether or not the predetermined time is exceeded.

Specifically, when the projection-type image display device determines that the length of the interval is equal to or longer than a predetermined time, the image on the screen is not displayed by turning off the light source lamp at the end of the previous display timing. Switch to.
On the other hand, when it is determined that the length of the interval is not equal to or longer than the predetermined time, the brightness of the light output from the light source lamp at the end of the previous display timing is reduced, and the light output from the light source lamp by controlling the optical element. By, for example, displaying a black screen on the screen, as if the light source lamp is turned off, the image on the screen can be switched to non-display.
That is, once the light source lamp provided in the projection display apparatus is turned off, a predetermined time (for example, 1 to 3 minutes) is required until the next lighting can be performed. When the time is shorter than the predetermined time, the light source lamp is not turned off, and the optical element is controlled and the light output from the light source lamp is optically modulated, so that the image on the screen is not displayed. The interval between the next display timings can be divided as an interval.

Therefore, the projection-type image display apparatus can display images according to a predetermined schedule along the time table stored in the storage unit.
And when multiple presenters make presentations etc. while displaying images with a projection type video display device, the video displayed on the screen can be switched automatically, so when the presenters start the presentation It is possible to save the trouble of operating the projection type video display device such as turning on the light source lamp or turning off the light source lamp at the end of the presentation.
Also, for example, when the time limit, which is the presentation time given to each presenter, has passed, the presentation can be terminated by switching the video on the screen to the non-display state. The announcement can be made smoothly.
Further, the projection-type image display device can turn off the light source lamp or reduce the output of the light source lamp so as to reduce the luminance of the light output from the light source lamp when no image is displayed on the screen. So you can save electrical energy.

According to the second aspect of the present invention, the projection display apparatus displays an image on the screen by optically modulating the light output from the light source lamp based on the time table stored in the storage means. Can do.
In particular, the projection-type image display device has a length of an interval in which no image is displayed on the screen, which is between the previous display timing and the next display timing in the time table stored in the storage means. However, it is possible to adjust the light output of the light source lamp in the interval not displaying the video by determining whether or not the predetermined time is exceeded.

Specifically, when the projection display apparatus determines that the length of the interval is not equal to or longer than a predetermined time, the light source lamp is not turned off, and the optical element is controlled at the end of the previous display timing to control the light source. By optically modulating the light output from the lamp, for example, by displaying a black screen on the screen, the image on the screen can be switched to non-display by making the light source lamp turn off.
That is, once the light source lamp provided in the projection display apparatus is turned off, a predetermined time (for example, 1 to 3 minutes) is required until the next lighting can be performed. When the time is shorter than the predetermined time, the light source lamp is not turned off, and the optical element is controlled and the light output from the light source lamp is optically modulated, so that the image on the screen is not displayed. The interval between the next display timings can be divided as an interval.

Therefore, the projection-type image display apparatus can display images according to a predetermined schedule along the time table stored in the storage unit.
And when multiple presenters make presentations etc. while displaying images with a projection type video display device, the video displayed on the screen can be switched automatically, so when the presenters start the presentation It is possible to save the trouble of operating the projection type video display device such as turning on the light source lamp or turning off the light source lamp at the end of the presentation.
Also, for example, when the time limit, which is the presentation time given to each presenter, has passed, the presentation can be terminated by switching the video on the screen to the non-display state. The announcement can be made smoothly.
In addition, since the projection-type image display device can turn off the light source lamp when no image is displayed on the screen, it can save electric energy.

According to the third aspect of the invention, the same effect as that of the second aspect of the invention can be obtained, and the projection type image display device controls the optical element to switch the image on the screen to non-display. In this case, the luminance of light output from the light source lamp can be reduced.
That is, when the projection type image display device switches the image on the screen to non-display by controlling the optical element and optically modulating the light output from the light source lamp, for example, displaying a black screen on the screen. Since the image on the screen is switched to non-display by controlling the optical element so as not to turn off the light source lamp, the luminance and light quantity of the light output from the light source lamp have no effect on the display / non-display of the image. .
Therefore, when the projection-type image display device controls the optical element to switch the image on the screen to non-display, it is possible to reduce the luminance of the light output from the light source lamp. By reducing the output of the light source lamp so as to reduce the luminance, electrical energy can be saved.

  Embodiments of a projection type video display apparatus according to the present invention will be described below in detail with reference to the drawings. The projection display apparatus forms an optical image based on image data input from a personal computer, a video camera, etc., and projects the formed optical image on a screen provided in front of the enlarged image. It is a device that displays video.

  FIG. 1 is a perspective view showing a projection-type image display apparatus 100 (hereinafter referred to as a projector 100) according to the present invention, and FIG. 2 is a block diagram showing a main configuration of the projector 100. As shown in FIG.

As shown in FIGS. 1 and 2, the projector 100 emits high-luminance light, a video input unit 1 to which image data is input, an operation unit 2 having a plurality of operation switches for operating the projector. A light source lamp 3 (hereinafter referred to as lamp 3), a DMD (Digital Micromirror Device) image forming element 4 (hereinafter referred to as DMD 4), which is an optical element to which light emitted from the lamp 3 is incident, and light reflected by the DMD 4 A communication unit 7 for communicating with the passing lens 5, a remote controller 10 for operating the projector 100, a control unit 6 for controlling various operations and processes of the projector, and the like are provided.
Note that the lamp 3, DMD 4, and control unit 6 are housed in the housing 8 of the projector 100, and the video input unit 1, the operation unit 2, the lens 5, and the communication unit 7 are on the outer surface side of the housing 8. It is arranged.

  The video input unit 1 is electrically connected to a video output device such as a personal computer or a video camera, for example, and image data of a video projected on the screen S is connected to the video input unit 1. Input from video output equipment. Then, the video input unit 1 outputs the input image data to the control unit 6.

As shown in FIGS. 1 to 3, the operation unit 2 includes a power switch 21 that switches on / off the power of the projector, a volume switch 22 that adjusts audio output, and a menu switch 23 that displays various menus. A keystone switch 24 for performing an operation input for correcting trapezoidal distortion of the image projected on the screen S, an up / down / left / right switch 25 for performing various settings / inputs, and display / display of the image according to a predetermined time table. A presentation switch 26 for executing a video display processing operation for presentation (announcement) that automatically switches non-display, an extension switch 27 for extending a video display time during the video display processing operation for presentation, and the like are provided. ing.
The volume switch 22 has a “+” switch (up key) and a “−” switch (down key), and the keystone switch 24 also has a “+” switch and a “−” switch (not shown). . Further, the up / down / left / right switch 25 is capable of inputting an instruction related to the up / down / left / right direction, and an instruction input related to determination or determination by pressing the center part thereof.
Various operation instructions inputted by pressing various operation switches in the operation unit 2 are output to the control unit 6.

The lamp 3 is, for example, a light source that is configured by a metal halide lamp, an ultra-high pressure mercury lamp, or the like and emits high-luminance light. The projector 100 displays a clearer image or video on a screen S provided at a remote position. It is possible to output high-intensity light to project the image.
It should be noted that the brightness of light output from the lamp 3 can be adjusted by adjusting the power supplied to the lamp 3 and the like.

  The DMD 4 is an electronic component composed of a plurality of micromirror elements. For example, a plurality of movable micromirrors driven by electrostatic adsorption or the like are arranged in a matrix so as to correspond to pixels of an imaging device such as a CCD. It is an arrangement. Then, each micromirror is controlled based on image data input from a predetermined video output device, the reflection direction of the light beam emitted from the lamp 3 is changed, and the light is optically modulated to form an optical image. To do.

  The lens 5 is constituted by, for example, a zoom lens or the like, and condenses the light (optical image) modulated by the DMD 4 and reflected on the lens 5 side, and magnifies and projects the light toward the screen S. Then, only the light beam reflected to the lens 5 side by the DMD 4 reaches the screen S, and an optical image is projected and projected on the screen S.

The communication unit 7 transmits and receives various data between the projector 100 and the remote controller 10 by transmitting and receiving predetermined signals to and from the remote controller 10.
For example, the communication unit 7 receives various signals related to the operation of the projector transmitted from the remote controller 10 and sends the received various signals to the control unit 6.
In addition, the communication unit 7 transmits various signals output from the control unit 6 of the projector 100 to the remote controller 10.

  The remote controller 10 is an operation device for operating the projector 100 from a remote position, and includes switches and keys similar to the various operation switches that the operation unit 2 has.

The control unit 6 is configured by a semiconductor integrated circuit, for example, and controls each unit of the projector 100 in order to project a video based on the image data input from the video input unit 1 on the screen S.
As shown in FIG. 2, the control unit 6 includes a CPU 61, a RAM 62, a storage unit 63 as storage means, and the like.

  The CPU 61 reads the processing program and various data stored in the storage unit 63, develops it in the RAM 62, and executes it to control the entire projector 100.

  The RAM 62 develops the processing program executed by the CPU 61 in the program storage area in the RAM 62, and also displays the operation instruction data input from the operation unit 2 and the processing result generated when the processing program is executed. Store in the area.

The storage unit 63 includes, for example, a recording medium (not shown) configured by a semiconductor memory or the like, and programs, data, and the like are stored in advance on the recording medium.
And the memory | storage part 63 memorize | stores the various data for the CPU61 to implement | achieve the function which controls the projector 100 whole, various processing programs, the data processed by execution of these programs, etc. More specifically, the storage unit 63 includes, for example, a time table data 63a, an interval determination program 63b, and a lamp control program 6 as shown in FIG.
3c, optical element control program 63d, OS for OSD display (On Screen Display)
D data 63e, a projection program 63f, an OSD display program 63g, an operation instruction execution program 63h, and the like are stored.

The time table data 63a includes a display timing length (time) for displaying an image on the screen S and an interval length (time) for displaying no image on the screen S between the previous display timing and the next display timing. ) Is a data relating to a time table for switching between display and non-display of video on the screen S, and the video display processing for presentation (announcement) in which the projector 100 automatically switches display / non-display of the video References for timing for switching on / off the lamp 3 or adjusting the luminance of the light output from the lamp 3 and switching between optical modulation for image display and image non-display modulation of the DMD 4 when the operation is executed Data.
The time table data 63a is a basic time table in which a length (time) of display timing for displaying video on the screen S set in advance and an interval length (time) for not displaying video on the screen S are combined. And a time table desired by the user, which is set by changing the display timing length (time) and interval length (time) in the basic time table.
Further, reference time data related to a reference time of the interval length (time) input and set via the operation unit 2 or the like is stored in the storage unit 63 so as to be associated with the time table data 63a. In the present embodiment, it is assumed that the reference time of the interval length (time) is 3 minutes and the reference time data “3 minutes” is stored in the storage unit 63.

The interval determination program 63b is based on the time table stored in the storage unit 63 and the reference time data, and is displayed on the screen S between the previous display timing and the next display timing when the video is displayed on the screen S. This is a program that causes the CPU 61 to implement control for determining whether or not the length (time) of the interval not displaying is greater than or equal to a predetermined time (reference time).
In the present embodiment, the interval determination program 63b is a program that causes the CPU 61 to implement control for determining whether or not the length (time) of the interval at which no image is displayed on the screen S is 3 minutes or more. To do.

  The lamp control program 63 c is a program that causes the CPU 61 to realize control for switching on / off the lamp 3 and control for adjusting the luminance of the light output from the lamp 3 based on the time table stored in the storage unit 63.

  The optical element control program 63d controls the DMD 4 based on the time table stored in the storage unit 63, thereby projecting and displaying a black screen that is a video non-display screen on the video display area of the screen S. This is a program to be realized.

  The OSD data 63e includes, for example, OSD image data projected and displayed on the screen S in a superimposed manner on a video based on the image data input via the video input unit 1. The OSD image data includes icon data, operation menu screen data, time table setting screen data, time table display screen data, and the like associated with operation instructions corresponding to various operation switches of the operation unit 2.

The projection program 63f is a program that causes the CPU 61 to realize a function of projecting a video based on the image data input from the video input unit 1 onto the screen S, for example, by controlling the DMD 4 or the like. More specifically, when image data is input from the video input unit 1, the projection program 63 d projects and displays a video based on the image data on the screen S, and inputs image data from the video input unit 1. If there is not, for example, the CPU 61 realizes a function of projecting and displaying a blue screen or the like as a standby screen on the video display area of the screen S.

  For example, when the operation switch is operated, the OSD display program 63g superimposes an OSD image based on the OSD image data corresponding to the operated operation switch on a video based on the image data displayed on the screen S. This is a program for causing the CPU 61 to realize the function of projecting and displaying.

The operation instruction execution program 63h is a program that causes the CPU 61 to realize a function of executing a predetermined process assigned to an operation switch when an operation switch of the operation unit 2 or the remote controller 10 is operated, for example.
For example, the operation instruction execution program 63h is, for example, the display timing length (time) and interval length (time) in the basic time table stored in the storage unit 63 when the up / down / left / right switch 25 or the like is operated. Is a program for causing the CPU 61 to realize a function of changing at least one of the above and setting a desired time table.
The operation instruction execution program 63h is a program that causes the CPU 61 to realize control based on the lamp control program 63c and the optical element control program 63d, for example, when the presentation switch 26 is operated.
The operation instruction execution program 63h is a program for causing the CPU 61 to implement control for extending the lighting time of the lamp 3 for one minute during execution of control based on the lamp control program 63c, for example, by operating the extension switch 27. is there.

  And the control part 6 functions as a video display control means which projects and displays the image | video based on the image data input from the video input part 1 on the screen S, when CPU61 runs the projection program 63f.

  In addition, the control unit 6 displays a part of the image displayed on the screen S when the CPU 61 executes the OSD display program 63g and an operation instruction is input to the operation switch of the operation unit 2 or the remote controller 10. The OSD image display control means for projecting and displaying the OSD image based on the OSD image data of the OSD data 63c relating to the operation instruction corresponding to the operation switch.

  In addition, the control unit 6 causes the CPU 61 to execute the interval control program 63b, and based on the time table and the reference time data stored in the storage unit 63, the next display timing and the next display timing of the image displayed on the screen S. It functions as an interval determination means for determining whether or not the length (time) of the interval during which no video is displayed on the screen S is 3 minutes or more, which is a predetermined time (reference time), between the display timing of the image and the display timing.

Further, the control unit 6 controls the switching of the lamp 3 to be turned on and off based on the time table stored in the storage unit 63 by the CPU 61 executing the lamp control program 63c, and the luminance of the light output from the lamp 3. It functions as a lamp control means for performing control to adjust.
The control unit 6 switches the lighting and extinguishing of the lamp 3 based on the time table stored in the storage unit 63 when the CPU 61 executes the lamp control program 63c, and displays / displays the image projected on the screen S. It functions as first lamp control means for switching non-display. That is, the control unit 6 as the first lamp control means switches the video on the screen S to non-display by turning off the lamp 3.
In particular, when the control unit 6 as the interval determination unit determines that the length (time) of the interval is equal to or longer than a predetermined time (for example, 3 minutes or more), the control unit 6 as the first lamp control unit The video on the screen S is switched to non-display by turning off the lamp 3 at the end of the previous video display timing.
In addition, the control unit 6 controls the DMD 4 by controlling the DMD 4 based on a time table stored in the storage unit 63 and controlling the DMD 4 by the control unit 6 as an optical element control unit, which will be described later. When a black screen, which is a video non-display screen, is projected and displayed on the video display area of S, it functions as a second lamp control means for performing adjustment to reduce the luminance of the light output from the lamp 3. That is, the control unit 6 as the second lamp control unit displays a black screen that is a video non-display screen in the video display area of the screen S by cooperating with the control unit 6 as the optical element control unit described later. Thus, the video on the screen S is switched to non-display.
In particular, when the control unit 6 as the interval determination unit determines that the length (time) of the interval is not equal to or longer than the predetermined time and is less than the predetermined time (for example, less than 3 minutes), the second lamp control unit The control unit 6 performs adjustment to reduce the luminance of the light output from the lamp 3 at the end of the previous video display timing.

In addition, the control unit 6 controls the DMD 4 based on the time table stored in the storage unit 63 when the CPU 61 executes the optical element control program 63d, thereby displaying the video non-display screen on the video display area of the screen S. It functions as an optical element control unit that switches a video on the screen S to non-display so that a certain black screen is projected and displayed.
In particular, when the control unit 6 as the interval determination means determines that the length (time) of the interval is not longer than the predetermined time and is less than the predetermined time (for example, less than 3 minutes), the control as the optical element control means is performed. The unit 6 controls the DMD 4 at the end of the previous video display timing to display a black screen as a video non-display screen in the video display area of the screen S, and switches the video on the screen S to non-display.

  Also, the control unit 6 causes the storage unit 63 to store the CPU 61 by executing the operation instruction execution program 63h, for example, by operating the up / down / left / right switch 25 of the operation switch that is a part of the time table setting unit. It functions as time table setting means for setting a desired time table by changing at least one of the display timing length (time) and interval length (time) in the stored basic time table. The set time table is stored in the storage unit 63.

In addition, the control unit 6 performs control based on the lamp control program 63c and the optical element control program 63d (lamp control means, lamp control unit, etc.) when the CPU 61 executes the operation instruction execution program 63h, for example, when the presentation switch 26 is operated. The optical element control means).
Further, the control unit 6 performs control (lamp control means) based on the lamp control program 63c when the CPU 61 executes the operation instruction execution program 63h, for example, when the extension switch 27 is pressed and operated once. During execution, it functions to execute control for extending the lighting time of the lamp 3 for one minute. Since the lamp 3 is turned off once and takes about 1 minute before it can be turned on again, the lamp 3 is turned off so that the interval timing (“starting time” to be described later) is at least 1 minute. 3 is applied to extend the lighting time. That is, in order to secure an extinguishing time, which is the timing of the interval at which the lamp 3 is extinguished, a process for reducing the extinguishing time and applying the lighting time to the lighting time is performed, so that the time when the lamp 3 starts to turn on is not shifted. Yes.

In addition, the control unit 6 causes the CPU 61 to execute the operation instruction execution program 63h, so that, for example, when the operation instruction is input by pressing the volume switch 22 of the operation unit 2 or the remote controller 10, an audio output is performed. Adjust to increase or decrease.
Further, the control unit 6 causes the CPU 61 to execute the operation instruction execution program 63h, for example, on the screen S when the operation instruction is input by pressing the keystone switch 24 of the operation unit 2 or the remote controller 10. The trapezoidal distortion of the display area of the video projected on the screen is corrected, and correction processing is performed so that the video screen projected on the screen S has a substantially rectangular shape.
Further, the control unit 6 causes the CPU 61 to execute the operation instruction execution program 63h so that, for example, when the operation switch 2 or the menu switch 23 of the remote controller 10 is pressed and the operation instruction is input, the control unit 6 is displayed on the screen S. A process of displaying various menus related to the operation / setting of the projector on a part of the projected image is performed.

  Next, processing for setting a desired time table in projector 100 will be described.

For example, by pressing the menu switch 23 of the operation unit 2 of the projector 100 or the remote controller 10 and selecting an item relating to setting of the time table, the time table setting / display screen G as shown in FIG. Display OSD.
As shown in FIG. 4, the time table setting / display screen G is provided with setting condition input fields R1, R2, and R3 for “operation”, “start time”, and “lighting time” for Schedule 1 to Schedule 10, respectively. ing.

Then, the up / down / left / right switch 25 is operated to instruct a desired setting condition input field, and the setting condition can be input to the setting condition input field, and the up / down / left / right switch 25 is operated. Thus, a desired setting condition is input in the input field.
For example, when an operation with the up / down / left / right switch 25 is performed on the setting condition input field R1 related to “operation”, the setting condition input field R1 is displayed so that “end” and “start” are switched in order. "End" or "Start" setting condition is input and set.
In addition, when the setting condition related to “Operation” in each Schedule is set to “End”, the schedule is not executed, and when the setting condition related to “Action” in each Schedule is set to “Start” The schedule is to be executed.
Further, when the up / down / left / right switch 25 is operated on the setting condition input fields R2 and R3 related to “start time” and “lighting time”, the setting condition input fields R2 and R3 display numerical values (minutes) related to the respective operation times. , Min) are displayed so that they can be switched up / down, and the respective operation times (min, min) are input and set.
Note that the “start time” is the display control of the video based on the schedule and the time table after registration of the schedule (time table in the case of Schedule 1) after the display of the previous video (the previous schedule) is completed. Display / non-display control) After the start of execution), it is a setting related to how many minutes after the start of the display of the next video, and the “lighting time” indicates that the video is displayed on the screen S by continuing to keep the lamp 3 lit. This is a setting for the duration to continue.
That is, the “start time” is the time between the previous video display and the next video display, which is related to the interval at which no video is displayed on the screen S, and the “lighting time” is the time for displaying the video on the screen S. is there.

Initially, for this time table setting / display screen G, the lighting time of the lamp 3 (video display time) is “10” for each schedule based on the basic time table stored in the storage unit 63. Since the start time corresponding to the length of the interval at which no image is displayed on the screen S is set to “5 minutes” and the operation is set to “end”, the setting condition input operation described above allows the desired setting condition to be set. An input is performed and the user sets a desired timetable.
Then, the time table desired by the user in which the lighting time (video display time), start time (video non-display interval time), and the like in the basic time table are changed is stored in the storage unit 63.

Then, in the time table set in the time table setting / display screen G shown in FIG. 4, the “operation” of Schedule 1 to Schedule 6 is set to “start”, so that the setting in Schedule 1 to Schedule 6 is executed. It has become.
After the schedule (time table) relating to Schedule 1 to Schedule 6 is registered, when the presentation switch 26 is pressed and video display control is started, the lamp 3 is turned on corresponding to Schedule 1 after an interval of 10 minutes, and the screen S For 10 minutes. After the display of the video is completed, the lamp 3 is turned off and the video is switched to non-display (Schedule 1).
Next, after the lamp 3 in the Schedule 1 is turned off, the lamp 3 is turned on corresponding to the Schedule 2 after an interval of 5 minutes, and an image is displayed on the screen S for 10 minutes. After the display of the video is completed, the lamp 3 is turned off and the video is switched to non-display (Schedule 2).
Next, after the lamp 3 in the schedule 2 is turned off, the lamp 3 is turned on corresponding to the schedule 3 after an interval of 5 minutes, and an image is displayed on the screen S for 10 minutes. After the display of the video is completed, the lamp 3 is turned off and the video is switched to non-display (Schedule 3).
Next, after the lamp 3 in the Schedule 3 is turned off, the lamp 3 is turned on corresponding to the Schedule 4 after an interval of 3 minutes, and an image is displayed on the screen S for 10 minutes. After the display of the video, the brightness of the light output from the lamp 3 is reduced and the DMD 4 is controlled to display a black screen in the video display area of the screen S, thereby switching the video on the screen S to non-display. (Schedule 4).
Next, after displaying the video on Schedule 4, the brightness of the light output from the lamp 3 is lowered and the DMD 4 is controlled to display a black screen on the screen S. After an interval of 1 minute, the lamp 3 corresponds to the schedule 5. Is turned on at a normal brightness and the DMD 4 executes a normal video display process, whereby a video is displayed on the screen S for 10 minutes. After the display of the video is completed, the lamp 3 is turned off and the video is switched to non-display (Schedule 5).
Next, after the lamp 3 is turned off in the Schedule 5, the lamp 3 is turned on corresponding to the Schedule 6 after an interval of 5 minutes, and an image is displayed on the screen S for 10 minutes. After the display of the video is completed, the lamp 3 is turned off and the video is switched to non-display (Schedule 6).

That is, when the video display / non-display control corresponding to the time table set in the time table setting / display screen G shown in FIG. 4 is executed, the following video display / non-display control is executed. .
Since the “lighting time” that is the display time of the video in Schedule 1 to Schedule 6 is 10 minutes each, the lamp 3 is turned on for 10 minutes and the video is displayed on the screen S.
In addition, since the “starting time” that is the interval time for image non-display in Schedule 1 to Schedule 4 and Schedule 6 is 3 minutes or more, the image on the screen S is not displayed by turning off the lamp 3 at each interval time. Switch.
On the other hand, since the “start time” that is the interval time for image non-display in Schedule 5 is 1 minute, which is less than 3 minutes, the DMD 4 is controlled while reducing the brightness of the light output from the lamp 3 during that interval time. By displaying a black screen, the video on the screen S is switched to non-display.

  Next, an example of operation processing when the projector 100 executes control for switching between display / non-display of video on the screen S according to a predetermined time table will be described based on the flowchart shown in FIG.

First, the control unit 6 determines whether or not the presentation switch 26 has been pressed (step S101). When the control unit 6 determines that the presentation switch 26 has been pressed (step S101; Yes), the control unit 6 Based on a predetermined time table, the projector 100 is caused to perform control for switching display / non-display of the image projected on the screen S by switching on / off of the lamp 3 or controlling the DMD 4.

Next, the control unit 6 determines whether or not the video non-display interval time which is the next “start time” is 3 minutes or longer (step S102).
When the control unit 6 determines that the next “start time” is 3 minutes or more (step S102; Yes), the control unit 6 turns off the lamp 3 and hides the video on the screen S (step S103). The process proceeds to step S105.
On the other hand, when the control unit 6 determines that the next “start time” is not 3 minutes or longer and less than 3 minutes (step S102; No), the control unit 6 reduces the output of the lamp 3 to reduce the luminance of the light. At the same time, the DMD 4 is controlled to display a black screen on the screen S so that the video on the screen S is not displayed (step S104), and the process proceeds to step S105.

In step S105, the control unit 6 determines whether or not an interval time that is a “start time” has elapsed (step S105).
When the control unit 6 determines that the interval time that is the “start time” has elapsed (step S105; Yes), the control unit 6 turns on the lamp 3 so as to output light of normal luminance, and causes the DMD 4 to turn on. A normal video display process is executed, and a video is displayed on the screen S (step S106).

Next, the control unit 6 determines whether or not the extension switch 27 has been pressed (step S107).
When the control unit 6 determines that the extension switch 27 has been pressed (step S107; Yes), the control unit 6 performs a process of extending the lamp lighting time by one minute (step S108), and proceeds to step S109.
On the other hand, when the control unit 6 determines that the extension switch 27 has not been pressed (step S107; No), the process proceeds to step S109.
In the lamp control process in the video display process in the projector 100, the interval time in the video non-display state is set so that the time when the lamp 3 is lit and the video display starts in each schedule constituting the time table does not change. It is designed to be used for the lamp lighting time that is cut and extended. In other words, the time for starting the presentation or presentation corresponding to each schedule in the timetable does not change, and the progress of the presentation or presentation is not hindered.
Further, since it takes about 1 minute for the lamp 3 to turn off once after it has been turned off, the lighting time is extended so that the interval time for the lamp 3 to turn off is at least one minute. In other words, when there is a 5-minute interval between presentations and announcements in which the lamp 3 is turned off, the lighting time is extended for a maximum of 4 minutes and the lamp turning-off time is 1 minute. If the lamp lighting time is extended and the interval time becomes 3 minutes or less, the video is not displayed by controlling the DMD 4 to display the black screen on the screen S in step S104. In addition, it is possible to execute control to hide the video on the screen S.

In step S109, the control unit 6 determines whether or not the “lighting time” corresponding to the predetermined schedule in the time table has elapsed (whether or not the video non-display timing corresponding to the predetermined schedule has come). Step S109).
If the control unit 6 determines that the “lighting time” has not elapsed (the timing for not displaying the video has not come) (step S109; No), the process returns to step S106.
On the other hand, when the control unit 6 determines that the “lighting time” has elapsed (the timing of image non-display) has passed (step S109; Yes), the control unit 6 ends all schedules in the predetermined time table. Whether or not (step S110).
If the control unit 6 determines that all schedules in the predetermined time table have not been completed (step S110; No), the process returns to step S102, and the process proceeds to processing related to the next schedule in the predetermined time table.
On the other hand, when the control unit 6 determines that all the schedules in the predetermined timetable have been completed (step S110; Yes), the control unit 6 turns off the lamp 3 and hides the video on the screen S ( In step S111, the data relating to the time table is deleted (step S112), and the lamp control process is terminated.

As described above, the projector 100 according to the present invention can automatically switch display / non-display of the image projected on the screen S based on the predetermined time table stored in the storage unit 63.
That is, the “lighting time” in which the lamp 3 is turned on to display the video on the screen S according to the respective schedules in which a plurality of presenters make presentations (presentations) while the video is displayed by the projector 100, and the schedule. By setting in advance a time table that is combined with the “start time” that is the interval time at which the presenter is switched every time, the video to be displayed when each presenter makes a presentation can be automatically switched. Therefore, it is possible to save the trouble of operating the projector 100 such as turning on the lamp 3 when the presenter starts the presentation or turning off the lamp 3 at the end of the presentation. Further, the projector 100 can display an image according to a predetermined schedule so as to follow a preset time table.

Then, the projector 100 can save electric energy by turning off the lamp 3 or reducing the luminance of the emitted light by reducing the output of the lamp 3 at intervals where the presenter is switched.
In particular, once the lamp 3 is turned off, a predetermined time (for example, 1 minute) is required until the next lighting can be performed, and therefore, the interval time is less than the reference time (for example, 3 minutes). In other words, the projector 100 can display the black screen on the screen S by controlling the DMD 4 without turning off the lamp 3, thereby making it possible to make the image non-display state as if the lamp 3 was turned off. When the interval time is equal to or longer than a reference time (for example, 3 minutes), the projector 100 switches the image to non-display by turning off the lamp 3 during the interval.

Then, the projector 100 turns off the lamp 3 or displays a black screen by the control processing of the DMD 4 when the time limit (“lighting time”) that is the presentation time given to each presenter has passed. Then, by switching the display of the video to non-display, the presentation (presentation) can be ended, so that the presentation can be smoothly advanced according to the scheduled schedule.
In addition, since each presenter makes a presentation within the time limit, there is an advantage that it becomes easy to receive a fair examination based on the contents of the presentation made within the time limit.

  Further, the projector 100 has a function of extending the lighting time of the lamp 3, which is the announcement time, but the extension process is performed within the range in which the start time for starting the next announcement is not shifted. Since the lighting time and the video display time are extended, the schedule can be advanced without hindering the presentation of the presenter thereafter.

Further, since the projector 100 has a basic time table in the storage unit 63 in advance, the projector 100 can display an image according to the schedule according to the basic time table, and the lamp 3 is turned on in the basic time table. A desired time table can be easily created and set by changing the time and the turn-off time as necessary.
That is, even when the number of presenters and the presentation times are different, the projector 100 can perform video display corresponding to various schedules by setting a desired time table based on the basic time table. .

  In the above embodiment, the case where the number of schedules in the time table is 10 has been described as an example. However, the present invention is not limited to this, and schedules that can be set in the time table are described. The number is arbitrary, and the “lighting time” that is the video display time and the “start time” that is the video non-display time / interval time can also be set arbitrarily.

In the above embodiment, when the projector 100 determines that the interval time is less than the reference time (for example, 3 minutes), the DMD 4 is controlled to display a black “solid” image on the screen S. By displaying a black screen, the video on the screen S is not displayed. However, the present invention is not limited to this, and the screen for video non-display displayed on the screen S by controlling the DMD 4 is not limited to this. A screen having other colors or a display form may be used.
In the above embodiment, the video on the screen S is hidden by controlling the DMD 4 to display a black screen on the screen S. However, the present invention is not limited to this. The light emission luminance of the lamp 3 may be lowered to the limit to make the image on the screen S non-display state.

Also, a time table is set in an external device such as a personal computer, and data relating to the set time table is input to the projector 100 via the communication unit 7 and the like, and the time table is stored in the storage unit 63. You may make it do.
In addition, “start time” and “lighting time” in the time table may be set by time data such as what hour and minute, and display / non-display of video in accordance with a predetermined time may be switched.

  In addition, it is needless to say that other specific detailed structures can be appropriately changed.

1 is a perspective view showing a projector according to the present invention. It is a block diagram which shows the principal part structure of the projector which concerns on this invention. It is a front view which shows the operation part of a projector. It is explanatory drawing which shows an example of the display screen regarding the time table displayed on a screen. It is a flowchart which shows an example of the operation process which a projector switches display / non-display of an image | video according to a time table.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Image input part 2 Operation part 25 Up / down / left / right switch 26 Presentation switch 27 Extension switch 3 Lamp (light source lamp)
4 DMD (optical element)
5 Lens 6 Control section (interval judgment means, lamp control means (first lamp control means, second lamp control means), optical element control means)
61 CPU
62 RAM
63 Storage section (storage means)
63a Time table data 63b Interval judgment program 63c Lamp control program 63d Optical element control program 63h Operation instruction execution program 7 Communication unit 10 Remote control 100 Projector (projection type video display device)
G Timetable setting / display screen R1-R3 Setting condition input field S Screen

Claims (3)

A projection-type image display device that projects and displays an image on a screen by optically modulating light output from a light source lamp by a predetermined optical element,
Storage means for storing a timetable according to a schedule for displaying video on the screen;
In the time table stored in the storage means, the length of the interval at which no video is displayed on the screen, which is between the display timing of the video displayed on the screen and the next display timing, is a predetermined time. Interval determination means for determining whether or not the above,
When the interval determining means determines that the length of the interval is equal to or longer than a predetermined time, the first light source lamp is turned off at the end of the previous display timing to switch the image on the screen to non-display. Lamp control means,
A second lamp control means for reducing the luminance of the light output from the light source lamp at the end of the previous display timing when the interval judging means judges that the length of the interval is not longer than a predetermined time; An optical element that switches the image on the screen to non-display by controlling the optical element at the end of the previous display timing in accordance with the fact that the second lamp control means decreases the luminance of the light output from the light source lamp. Control means;
A projection-type image display device comprising: A projection-type image display device that projects and displays an image on a screen by optically modulating light output from a light source lamp by a predetermined optical element,
Storage means for storing a timetable according to a schedule for displaying video on the screen;
In the time table stored in the storage means, the length of the interval at which no video is displayed on the screen, which is between the display timing of the video displayed on the screen and the next display timing, is a predetermined time. Interval determination means for determining whether or not the above,
Optical element control means for controlling the optical element at the end of the previous display timing and switching the image on the screen to non-display when the interval determination means determines that the length of the interval is not greater than or equal to a predetermined time When,
A projection-type image display device comprising:   The lamp control unit reduces the luminance of light output from the light source lamp when the optical element control unit controls the optical element to switch the image on the screen to non-display. Item 3. The projection type image display device according to Item 2.

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