JP2009244341A - Projector, display, projecting method, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely complete projection and display of a series of images by managing batteries being a power source in accordance with practical operation. <P>SOLUTION: A projector includes: the batteries 34 for supplying operation power of the projector as the power source; a light source lamp 18; projection systems 14-17, 19-24 for projecting toward a projection object by using light of the light source lamp 18 to form light images; an operation part 29 for inputting projection time periods by the projection systems 14-17, 19-24; and control systems 25-28 for adjusting an emission state of the light source lamp 18 by the projection time input with the operation part 29 and a remaining capacity of the batteries 34. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a projection apparatus, a display apparatus, a projection method, and a program suitable for, for example, a battery-driven data projector apparatus.

  In recent years, with the spread of personal computers, there are increasing cases of giving presentations by connecting a personal computer to a data projector apparatus. In such a case, there are many notebook-type personal computers that are battery-driven and have a continuous operation time exceeding 10 hours. On the other hand, a battery-driven data projector device consumes a lot of power for light emission driving and cooling of a light source such as a high-pressure mercury lamp, and therefore, continuous operation time equivalent to that of a notebook personal computer. As a result, it has become a factor that impairs the mobility of the system.

As a technology for more effectively utilizing a battery with a limited capacity in this type of battery-powered projector, the control unit detects the illumination light detected from the light source lamp according to the remaining battery capacity detected by the remaining capacity detection unit. It is conceivable to control the brightness and the projection area of the projection optical system to change the display mode of the image projected on the screen, that is, the brightness and size of the projected image. (For example, Patent Document 1)
JP 2003-149733 A

  However, the technique described in Patent Document 1 merely controls the brightness and the like of the projected image according to the remaining capacity of the battery as the power source. Therefore, the time during which the projection operation can be continuously performed after the remaining capacity of the battery is uniquely determined. For example, even when the projector is used for a presentation or the like, a decrease in the remaining battery capacity is simply notified in the projected image, and the time required for the presentation is not considered at all.

  The present invention has been made in view of the above circumstances, and its purpose is to manage a battery serving as a power source in accordance with an actual operation and reliably complete projection and display of a series of images. An object of the present invention is to provide a projection device, a display device, a projection method, and a program that can be used.

  According to the first aspect of the present invention, an optical image corresponding to an input image signal is formed by using a battery that supplies operating power of the apparatus as a power source, a light source, and light emitted from the light source, and the formed optical image. The light emission state of the light source is adjusted by the projection means for projecting the light toward the projection target, the time input means for inputting the projection time by the projection means, the projection time input by the time input means, and the remaining capacity of the battery And a power supply adjusting means.

  According to a second aspect of the present invention, in the first aspect of the invention, the time measuring means for measuring the elapsed time of projection by the projection means, and the projection means projects according to the elapsed time of projection measured by the time measuring means. It further comprises projection control means for superimposing time information in the optical image.

  According to a third aspect of the present invention, in the first aspect of the present invention, the projection input when the projection time input by the time input means exceeds the adjustment range of the light emission state of the light source by the power supply adjustment means. A warning means for warning that the projection operation in time is impossible is further provided.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the power supply adjusting unit adjusts the light emission state of the light source and executes the projection operation by the projection unit. Re-input of the projection time is accepted, and the light emission state of the light source is adjusted again according to the accepted projection time and the remaining capacity of the battery at that time.

  According to a fifth aspect of the present invention, there is provided a battery for supplying the operating power of the apparatus as a power source, display means for displaying an image, display drive means for driving the display means based on a given image signal, and the display means. A time input means for inputting a display time; and a power supply adjusting means for adjusting the driving state of the display means by the display drive means according to the projection time input by the time input means and the remaining capacity of the battery. Features.

  According to a sixth aspect of the present invention, an optical image corresponding to an input image signal is formed using a battery that supplies operating power of the apparatus as a power source, a light source, and light emitted from the light source, and the optical image is formed. A projection method in a projection apparatus comprising a projection unit that projects a projection toward a projection target, the time input step for inputting a projection time by the projection unit, the projection time input in the time input step, and the battery And a power source adjusting step for adjusting the light emission state of the light source according to the remaining capacity.

  According to the seventh aspect of the present invention, a light image corresponding to an input image signal is formed using a battery that supplies operating power of the apparatus as a power source, a light source, and light emitted from the light source, and the formed light image. Is a program executed by a computer built in a projection apparatus including a projection unit that projects a projection toward a projection target, a time input step for inputting a projection time by the projection unit, and a projection input in the time input step The computer is caused to execute a power supply adjustment step of adjusting a light emission state of the light source according to time and a remaining capacity of the battery.

  According to the present invention, a battery serving as a power source can be managed in accordance with an actual operation, and a series of image projection and display can be reliably completed.

(Constitution)
Hereinafter, an embodiment in which the present invention is applied to a battery-driven DLP (Digital Light Processing) (registered trademark) data projector apparatus will be described with reference to the drawings.

FIG. 1 is a block diagram showing a functional configuration of an electronic circuit included in the data projector device 10 according to the embodiment.
In the figure, reference numeral 11 denotes an input / output connector portion provided on the back side of the main body casing of the data projector apparatus 10 and comprises, for example, a pin jack (RCA) type video input terminal, a D-sub15 RGB input terminal, and a USB terminal. .

  Image signals of various standards input from the input / output connector unit 11 are sent to the image conversion unit 13 via the input / output interface (I / F) 12 and the system bus SB. The image conversion unit 13 is generally also referred to as a scaler, and after unifying the transmitted image signal into an image signal of a predetermined format suitable for projection including the number of resolutions, the number of gradations, etc., the projected image The data is sent to the processing unit 14.

  At this time, a character image for OSD (On Screen Display) and a symbol such as a pointer are also sent to the projection image processing unit 14 while being superimposed on the image signal as necessary.

  The projection image processing unit 14 develops and stores the transmitted image signal in the video RAM 15, and then generates a video signal from the stored contents of the video RAM 15.

  The projection image processing unit 14 performs spatial light modulation element by faster time-division driving that multiplies the frame rate of the video signal, for example, 60 [frames / second], the number of color component divisions, and the number of display gradations. The micromirror element 16 which is (SOM) is driven to display.

  This micromirror element 16 is controlled by the reflected light by individually controlling the tilt angles of a plurality of micromirrors arranged in an array, for example, XGA (width 1024 × length 768 dots) individually at high speed. A light image is formed.

  On the other hand, a light source lamp 18 using an ultra-high pressure mercury lamp disposed in the reflector 17 emits white light with high luminance. The white light emitted from the light source lamp 18 is colored into primary colors in a time-sharing manner through the color wheel 19, and is converted into a luminous flux having a uniform luminance distribution by the integrator 20, then totally reflected by the mirror 21 and reflected on the micromirror element 16. Irradiated.

  Then, an optical image is formed by the reflected light from the micromirror element 16, and the formed optical image is projected and displayed via a projection lens unit 22 on a screen (not shown) to be projected.

  The projection lens unit 22 can arbitrarily change the in-focus position and the zoom position (projection angle of view). That is, among a plurality of optical lenses constituting the projection lens unit 22, a focus lens and a zoom lens (not shown) are controlled by moving back and forth along the optical axis direction, and these lenses are stepping motors (M). It moves by the rotational drive of 23.

  The projection light processing unit 25 executes the lighting of the light source lamp 18, the rotation of the motor (M) 24 for the color wheel 19, and the rotation of the stepping motor 23.

  The projection light processing unit 25 also adjusts the light emission luminance by varying the drive current supplied to the light source lamp 18 as necessary.

  The CPU 26 controls all the operations of the above circuits. The CPU 26 has a built-in RTC (Real Time Clock) 26a that executes a time measuring operation regardless of whether the power is on or off, and also stores a main memory 27 composed of DRAM, an operation program, various fixed data, and the like. The control operation in the data projector apparatus 10 is executed using a program memory 28 which is a rewritable nonvolatile memory.

  The CPU 26 executes various projection operations in response to key operation signals from the operation unit 29. The operation unit 29 includes a key operation unit provided on the main body of the data projector device 10 and a laser light receiving unit that receives infrared light from a remote controller (not shown) dedicated to the data projector device 10. A key operation signal based on the key operated via the controller is directly output to the CPU 26.

  The CPU 26 is further connected to an indicator unit 30, an audio processing unit 31, and a power supply processing unit 32 via the system bus SB.

  The indicator unit 30 is disposed on the upper surface of the housing of the data projector device 10, and the operation state of the data projector device 10, for example, the power on / off state, the temperature abnormality of the light source lamp 18, and the automatic alignment by the projection lens unit 22. The focus / trapezoid correction operation etc. are displayed by lighting / flashing with various LED lamps.

  The sound processing unit 31 includes a sound source circuit such as a PCM sound source, converts the sound data given during the projection operation into an analog signal, drives the speaker unit 33 to emit loud sounds, and generates a beep sound or the like as necessary.

  The power processing unit 32 manages the battery 34 that is the power source of the data projector device 10. The power processing unit 32 converts the electric power obtained from the battery 34 into necessary voltages after being appropriately converted and supplies them to the above circuits. The remaining capacity of the battery 34 is detected upon request. The battery 34 includes a secondary battery, for example, a lithium ion battery and a drive circuit thereof.

(Operation)
Next, the operation of the above embodiment will be described.
In the present embodiment, the projection light processing unit 25 uses the power supplied from the power supply processing unit 32, applies a rated voltage to the light source lamp 18, and then controls the drive current to emit light from the light source lamp 18. It is assumed that the brightness can be adjusted.
That is, when the remaining capacity of the battery 34 is sufficient or when the projection time for a series of image data to be projected is not set, the projection light processing unit 25 supplies a normal drive current to the light source lamp 18. When the projection operation with normal brightness is performed and the remaining capacity of the battery 34 is used more effectively to secure the projection time, the light source lamp 18 is caused to emit light with a brightness lower than the normal brightness. The current value supplied to the light source lamp 18 is controlled to a smaller value.

  In that case, while maintaining stable light emission with the light source lamp 18, the driving current value at which the luminance is the smallest is set as the lower limit, and the driving current value in the case of performing projection at the normal brightness is set as the upper limit, the projection light processing unit Reference numeral 25 denotes that the light source lamp 18 emits light by any one of a plurality of stages of drive current values from the upper limit to the lower limit.

  FIG. 2 shows the processing contents related to the projection operation after the power is turned on by operating the power key of the operation unit 29. The operation control shown in FIG. 2 is executed by the CPU 26 while reading the operation program stored in the program memory 28 and developing it in the main memory 27.

At the beginning of the projection operation, a guide message that prompts for the input of the projection time used in the subsequent projection operation and its options, for example,
“We will manage the power supply in time.
Enter the usage time
Enter / Do not input "
Is displayed (step S101). At this time, by default, the “input” portion of the guide message is highlighted, and the cursor key (up / down / left / right direction keys) constituting the operation unit 29 or the “Enter” key is operated according to the user's operation. Then, it is determined whether or not the time is input (step S102).

  Here, when it is determined that the usage time is not input in response to the user's operation, the brightness of the light source lamp 18 is not controlled, and the light source lamp 18 is caused to emit light at the normal brightness as it is. Shall.

  Thereafter, while performing a normal projection operation of projecting a light image corresponding to the image signal input from the input / output connector unit 11 onto the screen to be projected from the projection lens unit 22 (step S103), the battery is processed by the power supply processing unit 32. The remaining capacity of 34 is detected to determine whether or not the power necessary for projection remains (step S104). If remaining, the process proceeds to step S103.

  Thus, the normal projection operation is continued while repeating the processes in steps S103 and S104, and when the remaining capacity of the battery 34 necessary for the projection operation is exhausted, it is determined in step S104, and the projection according to FIG. End the operation.

  As described above, when the projection operation usage time is not input, the normal projection operation is maintained until the remaining capacity of the battery 34 runs out, regardless of how long the actual projection operation takes. It is assumed that the projection operation is finished when the remaining capacity of is exhausted.

  On the other hand, if it is determined in step S102 that the usage time is input in accordance with the user's operation, the screen transitions to the usage time input screen, and the cursor keys (up / down / left / right direction keys) and “ By using the “Ent” key, the tenth digit indicating the fraction, for example, the first digit and the first digit are sequentially received, and the used time entered when the “Ent” key is operated is set in the main memory 27. (Step S105).

  Next, the remaining capacity of the battery 34 at that time is detected by the power supply processing unit 32 (step S106).

  Then, the detected remaining capacity of the battery 34 is compared with the power consumption in the normal projection operation based on the set projection operation usage time (step S107), and the current remaining capacity of the battery 34 is used for the set usage time. Whether or not the normal projection operation can be executed is determined based on whether or not the power consumption in the normal projection operation based on the set usage time of the projection operation is equal to or less than the remaining capacity of the battery 34 (step S108). ).

  At this time, the power consumption for the set use time may be calculated by multiplying the power value for the normal projection operation by the set use time, or the normal use corresponding to a plurality of use times in advance. A table storing the power consumption of the projection operation may be stored in the program memory 28 or the like, and when the usage time is input as described above, the corresponding power consumption may be derived from the table.

  In any case, the above-mentioned power consumption is obtained in order to determine whether or not the normal projection operation can be performed for the usage time set by the remaining capacity of the current battery 34, and the method for deriving this power consumption is particularly limited. Not what you want.

  Here, when it is determined that the normal projection operation can be executed for the set use time, the input / output connector unit 11 starts counting the set use time using the RTC 26a (step S112). An image in which the remaining usage time is superimposed on the image corresponding to the image signal input to is displayed on the micromirror element 16 to form an optical image, and is projected onto the screen to be projected from the projection lens unit 22 ( Step S113).

  At the same time, it is determined whether or not the remaining usage time by the RTC 26a corresponds to at least one of “0 (zero)” and whether or not the remaining capacity of the power supply processing unit 32 is exhausted (step S114). Otherwise, the process returns to step S113 again.

  By repeatedly executing the processes of steps S113 and S114 in this way, the remaining use time is lost or the remaining capacity of the power supply processing unit 32 is lost while continuing the normal projection operation combining the remaining use time images. Wait for.

  3 and 4 illustrate the contents of the screen projected on the projection target screen at this time. In FIG. 3, on the lower right side of the projection screen, together with the battery symbol mark according to the remaining capacity of the power processing unit 32, the remaining usage time is expressed as “43 (minutes): 21 (seconds)”. Directly written.

  Also, FIG. 4 shows a “Batt remaining 43 (minutes)” in a circle located in the center of the pie chart while expressing the seconds portion of the remaining usage time in a pie chart on the lower right side of the projection screen. The remaining usage time is written in a form that is easy to understand visually.

  When the projection operation at the normal brightness accompanied with the remaining remaining time is continued and the remaining usage time becomes “0 (zero)”, or the remaining capacity of the power supply processing unit 32 runs out. In step S114, this is determined, and the projection operation according to FIG.

  As described above, even when the usage time of the projection operation is input, if it is determined that the remaining capacity of the power supply processing unit 32 is sufficient as compared with the input usage time, the light emission luminance of the light source lamp 18 is adjusted. Instead, the normal projection operation is maintained together with the remaining usage time notation, and the projection operation is terminated when the remaining usage time runs out or the remaining capacity of the battery 34 runs out.

  In step S108, it is determined that the power consumption in the normal projection operation due to the set use time of the projection operation exceeds the remaining capacity of the battery 34, and the normal projection operation cannot be executed for the set use time. If so, it is then determined by adjusting the light emission luminance of the light source lamp 18 whether or not the projection operation can be performed for the set usage time (step S109).

This is determined based on whether or not the power consumption when the light source lamp 18 is operated for the usage time projection operation that is adjusted and set to the drive current value with the lowest luminance is less than or equal to the remaining capacity of the power supply processing unit 32. When it is determined that the adjustable range has been exceeded, that is, when it is determined that the current battery remaining capacity cannot perform the projection operation for the set usage time even when the light source lamp 18 is set to the minimum luminance level. Displays an image of a warning message that the battery level is too low compared to the set usage time, for example
“The battery is low,
In the usage time entered
Unable to complete projection
Please enter the usage time again. "
After projecting on the screen to be projected for a certain time as described above (step S110), the process returns to step S101 again and waits for the input of the usage time again.

  In step S109, the power consumption when the light source lamp 18 is projected for the usage time set by adjusting to the drive current value with the lowest luminance is less than the remaining capacity of the power supply processing unit 32. When it is determined that the projection operation can be performed only for the set usage time by adjusting the light emission luminance of the battery, the remaining capacity of the battery 34 detected by the power supply processing unit 32 is divided by the set use time and the quotient Then, the driving current in the light source lamp 18 is calculated, and the projection light processing unit 25 is set to the calculated value for the driving current in the light source lamp 18 (step S111). Then, the process proceeds to the processing after step S112. .

  Thereafter, the projection operation in a state where the luminance is suppressed together with the remaining usage time notation while the light emission luminance of the light source lamp 18 is adjusted is maintained, and the remaining usage time is lost or the remaining battery 34 is left. When the capacity runs out, the projection operation ends.

  As described above, even when the usage time of the projection operation is input, if it is determined that the remaining capacity of the power supply processing unit 32 is insufficient compared to the input usage time, the projection is performed during the input usage time. The power consumption is reduced by adjusting the light emission brightness of the light source lamp 18 so that it can be operated, the projection operation is maintained while the remaining usage time is indicated, and the remaining usage time disappears or the remaining capacity of the battery 34 It is assumed that the projection operation is finished when there is no more.

(Effect of this embodiment)
As described above, according to the present embodiment, it is possible to manage the battery 34 serving as a power source in accordance with the actually required projection operation and to complete the projection of a series of images with certainty.

  In the above embodiment, the remaining usage time is superimposed on the image and projected as progress information for the set usage time. As a result, for example, the presentation user can grasp the state of progress from the remaining usage time in the image, so that the possibility that the projection operation can be completed within the usage time while keeping the set usage time is improved. it can.

  Furthermore, the set use time is very large compared to the remaining capacity of the power supply processing unit 32, and no projection operation can be performed for the set use time no matter how the light emission luminance of the light source lamp 18 is adjusted. In this case, since the warning message informs the user that the projection operation in the usage time set prior to the projection operation is impossible, the user accurately grasps the remaining capacity of the power processing unit 32, Realistic measures such as re-entering the usage time can be executed.

(Other actions)
In the above-described operation, the usage time determined to be within the range in which the projection operation can be performed if it is set once and the luminance of the light source lamp 18 is adjusted from the remaining capacity of the battery 34 detected by the power supply processing unit 32 is not changed. Although it has been described that the change is not made until the projection operation is completed, in actual presentations and the like, the usage time may be changed depending on the situation during the projection operation.

  Therefore, a part of the description of the above operation, specifically, by changing the usage time during the projection by executing the processing contents as shown in FIG. 5 instead of the processing in steps S111 to S114 in FIG. Can also deal with.

Hereinafter, a partial modification of the operation of this embodiment will be described with reference to FIGS.
In FIG. 5, after the projection light processing unit 25 adjusts and sets the drive current of the light source lamp 18 in step S111, and after the remaining usage time is started by the RTC 26a in step S112, the input / output connector unit 11 An image is formed by superimposing an image corresponding to the image signal input to the remaining use time and an image for guiding the re-input of time on the micromirror element 16 to form a light image, and the projection lens unit 22 More projection is performed on the screen to be projected (step S201).

  In FIG. 6, on the lower right side of the projection screen, together with the battery symbol mark corresponding to the remaining capacity of the power processing unit 32, the remaining usage time is expressed as “43 (minutes): 21 (seconds)”. In addition to direct notation, operating the “Menu” key of the operation unit 29 when re-inputting the usage time is indicated as “time re-input: [Menu]”.

  While performing such a projection, whether or not the remaining usage time by the RTC 26a becomes “0 (zero)” or whether or not the remaining capacity of the power supply processing unit 32 runs out corresponds to at least one of them. Judgment is made (step S114).

  If it is determined in step S114 that none of them is applicable, it is further determined whether or not a key operation for instructing the re-input of the usage time has been performed (step S202). If no key operation has been performed, the process returns to step S201. Return to processing.

  By repeatedly executing the processing of steps S201, S114, and S202 in this way, the remaining usage time and the projection operation that combines the images that prompt the user to re-enter the usage time are continued, while the remaining usage time is lost or the power supply processing is performed. It waits for the remaining capacity of the unit 32 to run out or for a key operation to instruct re-input of the usage time.

  When the key operation for instructing the re-input of the usage time is performed, it is determined in the above step S202, and then the screen changes to the usage time re-input screen. ) And “Ent” key, for example, the tenth digit indicating the fraction and the first digit are sequentially input, and the used time inputted when the “Ent” key is operated is stored in the main memory. 27 (step S203).

Next, the remaining capacity of the battery 34 at that time is detected by the power supply processing unit 32 (step S204).
Then, the detected remaining capacity of the battery 34 is compared with the power consumption in the projection operation based on the use time of the re-set projection operation (step S205), and the current remaining capacity of the battery 34 is set for the set use time. Whether or not the projection operation can be executed is determined based on whether or not the power consumption in the projection operation at the minimum brightness of the light source lamp 18 according to the set use time of the projection operation is equal to or less than the remaining capacity of the battery 34. (Step S206).

  Here, the power consumption when the drive current to the light source lamp 18 is set to the minimum level for the set usage time is equal to or less than the remaining capacity of the power supply processing unit 32, and the light emission brightness at the light source lamp 18 is adjusted to adjust the light emission luminance. If it is determined that the projection operation can be performed only for the use time set again, the process proceeds to step S111 again, and the projection light processing unit 25 according to the use time set again and the remaining capacity of the power processing unit 32. After the drive current of the light source lamp 18 is set for the above, the process proceeds to the processing after step S112.

  In step S206, the power consumption when the driving current to the light source lamp 18 is set to the minimum level for the set usage time again exceeds the remaining capacity of the power supply processing unit 32, and the light source lamp 18 is set to the minimum luminance level. If it is determined that the projection operation cannot be executed for the set usage time again, the usable time is calculated from the remaining capacity of the power supply processing unit 32 when the light source lamp 18 is set to the minimum luminance level. (Step S207), the process proceeds to step S112 and subsequent steps.

FIG. 7 shows an example of a wrinkle guide message that is projected on the screen to be projected for a certain period of time. Here, since the remaining amount of battery is too small compared to the usage time set again, it is unavoidable that the usage time is set the longest according to the remaining capacity of the power processing unit 32, for example.
“The battery is low,
Set the lamp to the minimum brightness
Available time 54 (minutes): 32 (seconds) "
In this way, the image is projected on the projection target screen for a certain period of time.

  Thus, even during the execution of the projection operation based on the set usage time, the usage time is re-input, and the light source is determined by the received usage time and the remaining capacity of the power supply processing unit 32 at that time. By adjusting the light emission luminance of the lamp 18 again, it is possible to realize the projection operation in the usage time re-input as much as possible. Therefore, the battery 34 serving as the power source is managed flexibly according to the actually required projection operation, It is possible to reliably complete the projection of a series of images.

  In the above-described embodiment, the case where the present invention is applied to a DLP data projector apparatus has been described. However, the present invention does not limit the elements that form a light image and the like, and instead of the micromirror element 16, transmission is possible. A liquid crystal projector using a color liquid crystal panel, and a field that projects a color light image on a monochrome liquid crystal panel by emitting light in a time-sharing manner according to the color components of each RGB LED group serving as a light source It can be similarly applied to other projection apparatuses such as a sequential projector apparatus, and is not limited to the projection apparatus, but also has a capacity as a power source when adjusting the light emission state of the backlight using a liquid crystal display panel with a backlight. Can adjust the display time by adjusting the driving state of the display unit using a battery with limited battery If the display device, it is applicable to any.

  In addition, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention in the implementation stage. In addition, the functions executed in the above-described embodiments may be implemented in appropriate combination as much as possible. The above-described embodiment includes various stages, and various inventions can be extracted by an appropriate combination of a plurality of disclosed constituent elements. For example, even if some constituent requirements are deleted from all the constituent requirements shown in the embodiment, if the effect is obtained, a configuration from which the constituent requirements are deleted can be extracted as an invention.

The block diagram which shows the function structure of the electronic circuit of the data projector apparatus which concerns on one Embodiment of this invention. 9 is a flowchart showing processing contents mainly related to power management during the projection operation according to the embodiment. The figure which illustrates the content of the projection image which concerns on the same embodiment. The figure which illustrates the content of the projection image which concerns on the same embodiment. 12 is a flowchart showing other processing contents mainly related to power management during the projection operation according to the embodiment. The figure which illustrates the content of the projection image which concerns on the same embodiment. The figure which illustrates the content of the projection image which concerns on the same embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Data projector apparatus, 11 ... Input / output connector part, 12 ... Input / output interface (I / F), 13 ... Image conversion part, 14 ... Projection image processing part, 15 ... Video RAM, 16 ... Micromirror element (SOM) , 17 ... reflector, 18 ... light source lamp, 19 ... color wheel, 20 ... integrator, 21 ... mirror, 22 ... projection lens unit, 23 ... stepping motor (M), 24 ... motor (M), 25 ... projection light processing unit 26 ... CPU, 26a ... RTC, 27 ... main memory, 28 ... program memory, 29 ... operating unit, 30 ... indicator unit, 31 ... audio processing unit, 32 ... power supply processing unit, 33 ... speaker unit, 34 ... battery, SB: System bus.

Claims (7)

A battery that supplies the operating power of the device as a power source;
A light source;
Projecting means for forming a light image according to an input image signal using the light emitted from the light source, and projecting the formed light image toward a projection target;
Time input means for inputting the projection time by the projection means;
A projection apparatus comprising: a power supply adjusting unit that adjusts a light emission state of the light source based on a projection time input by the time input unit and a remaining capacity of the battery. Time measuring means for measuring the elapsed projection time in the projection means;
2. The projection apparatus according to claim 1, further comprising projection control means for superimposing time information on a light image projected by the projection means in accordance with a projection elapsed time measured by the time measuring means.   Warning means for warning that the projection operation at the input projection time is impossible when the projection time input by the time input means exceeds the adjustment range of the light emission state of the light source by the power supply adjustment means. The projection apparatus according to claim 1, further comprising:   The power supply adjustment unit accepts re-input of the projection time by the time input unit when adjusting the light emission state of the light source and executing the projection operation by the projection unit, The projection apparatus according to claim 1, wherein the light emission state of the light source is adjusted again according to the remaining capacity of the battery. A battery that supplies the operating power of the device as a power source;
Display means for displaying an image;
Display driving means for driving the display means based on a given image signal;
Time input means for inputting a display time by the display means;
A display device comprising: a power supply adjusting unit that adjusts a driving state of the display unit by the display driving unit based on a projection time input by the time input unit and a remaining capacity of the battery. Using a battery that supplies operating power of the apparatus as a power source, a light source, and light emitted from the light source, a light image corresponding to an input image signal is formed, and the formed light image is projected toward a projection target. A projection method with a projection device comprising a projection unit,
A time input step of inputting a projection time by the projection unit;
A projection method comprising: a power supply adjustment step of adjusting a light emission state of the light source based on a projection time input in the time input step and a remaining capacity of the battery. Using a battery that supplies operating power of the apparatus as a power source, a light source, and light emitted from the light source, a light image corresponding to an input image signal is formed, and the formed light image is projected toward a projection target. A program executed by a computer built in a projection apparatus having a projection unit,
A time input step of inputting a projection time by the projection unit;
A program for causing a computer to execute a power supply adjustment step of adjusting a light emission state of the light source based on the projection time input in the time input step and the remaining capacity of the battery.

Images