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WO2012104967A1 - Dispositif d'affichage d'images, procédé d'affichage d'images, programme d'affichage d'images - Google Patents

Dispositif d'affichage d'images, procédé d'affichage d'images, programme d'affichage d'images Download PDF

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Publication number
WO2012104967A1
WO2012104967A1 PCT/JP2011/051936 JP2011051936W WO2012104967A1 WO 2012104967 A1 WO2012104967 A1 WO 2012104967A1 JP 2011051936 W JP2011051936 W JP 2011051936W WO 2012104967 A1 WO2012104967 A1 WO 2012104967A1
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WO
WIPO (PCT)
Prior art keywords
laser light
light source
image
deterioration state
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2011/051936
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English (en)
Japanese (ja)
Inventor
修己 靭矢
祐樹 中井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
Original Assignee
Pioneer Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corp filed Critical Pioneer Corp
Priority to PCT/JP2011/051936 priority Critical patent/WO2012104967A1/fr
Publication of WO2012104967A1 publication Critical patent/WO2012104967A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/02—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen
    • G09G3/025—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes by tracing or scanning a light beam on a screen with scanning or deflecting the beams in two directions or dimensions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/12—Test circuits or failure detection circuits included in a display system, as permanent part thereof

Definitions

  • the present invention relates to an image display device that displays an image.
  • Devices such as projectors that generate projection light by synthesizing light emitted from multiple color laser light sources are known.
  • a typical example is a display device that uses three RGB laser light sources and performs color display.
  • Patent Documents 1 and 2 describe methods for detecting deterioration of a semiconductor laser and stopping the use.
  • the deterioration state of each laser light source is usually different, and even if one laser light source is deteriorated to the extent that it cannot be used, the other laser light sources are not so much. It may not be deteriorated. In such a case, if the apparatus is stopped as an error state, the display apparatus cannot display anything even though there is an undegraded laser light source.
  • An object of the present invention is to provide an image display device capable of performing display as much as possible even when some laser light sources deteriorate.
  • the invention according to claim 1 is an image display device, wherein at least two laser light sources each having a different wavelength of output light, a deterioration state determining means for determining a deterioration state of the laser light source, and image data are input.
  • the invention according to claim 8 is an image display method executed by an image display device including at least two laser light sources each having a different wavelength of output light, and a deterioration state determination step of determining a deterioration state of the laser light source And an input step for inputting image data, and a display control step for driving the laser light source to display an image corresponding to the image data, wherein the display control step is in a deteriorated state of each laser light source. Based on this, the color tone of the image is changed.
  • the invention according to claim 9 is an image display program executed by an image display apparatus including at least two laser light sources each having a different wavelength of output light, and a deterioration state determination unit that determines a deterioration state of the laser light source.
  • the image display device functions as an input means for inputting image data, and a display control means for driving the laser light source to display an image corresponding to the image data. The color tone of the image is changed based on the state.
  • the image display device includes at least two laser light sources having different output light wavelengths, a deterioration state determination unit that determines a deterioration state of the laser light source, and an input unit that inputs image data.
  • display control means for driving the laser light source to display an image corresponding to the image data, and the display control means changes the color tone of the image based on the deterioration state of each laser light source.
  • the above image display device emits a plurality of laser light sources and displays an image corresponding to the input image data.
  • the degradation state of each laser light source is determined by a technique such as detecting the laser output.
  • the display is performed by changing the color tone of the displayed image based on the deterioration state of the laser light source used. Therefore, when some of the laser light sources are severely deteriorated and cannot be used, or when the light emission efficiency is low, the laser light source is stopped or the output power is reduced to change the color tone. Thus, the image display can be continued.
  • the display control unit stops the laser light source determined to be unusable in the deterioration state, and displays an image using the laser light source determined to be normal in the deterioration state. As a result, display can be performed even when some of the laser light sources cannot be used.
  • the display control unit outputs the output of the laser light source whose deterioration state is determined to be reduced in efficiency, and the output when it is determined that the deterioration state of the laser light source is normal. Less than. In this way, the life of the laser light source, whose efficiency has been reduced due to deterioration, can be reduced and the life can be extended by delaying the degree of deterioration.
  • the display control unit decreases the output of the laser light source whose degradation state is determined to be reduced in efficiency
  • the output of the laser light source is increased as the degree of efficiency reduction is larger. Increase the rate of decrease. Thereby, progress of deterioration can be effectively delayed.
  • the display control unit determines that the deterioration state is normal when the laser light source that is determined to be in a deteriorated state is unusable or reduced in efficiency, or when its output is reduced.
  • the output of the other laser light source is increased.
  • the reduction in the display image level due to the decrease in the output of the laser light source, which is being deteriorated can be compensated for by another laser light source.
  • the deterioration state determination unit determines that the laser light source is normal when a predetermined output power corresponding to a predetermined drive current is obtained, and the deterioration state determination unit determines that the laser light source is normal.
  • the laser light source is determined to have a reduced efficiency, and when the predetermined output power is not obtained regardless of the magnitude of the applied drive current, the laser is determined. Determine that the light source is unusable.
  • the display control unit stops the output of the at least one laser light source in an image corresponding to the image data when the output of the laser light source is stopped or decreased. Or display a message indicating the decrease. Thereby, the user can know the reason why the color tone of the displayed image has changed, and can know the deterioration state of the laser.
  • an image display method executed by an image display device including at least two laser light sources each having a different wavelength of output light includes a deterioration state determination step of determining a deterioration state of the laser light source, An input process for inputting image data; and a display control process for driving the laser light source to display an image corresponding to the image data.
  • the display control process is based on a deterioration state of each laser light source. The color tone of the image is changed. Also by this method, display can be continued as much as possible according to the deterioration state of the laser light source.
  • an image display program executed by an image display device including at least two laser light sources each having a different wavelength of output light includes a deterioration state determination unit that determines a deterioration state of the laser light source, an image The image display device is caused to function as input means for inputting data, and display control means for driving the laser light source to display an image corresponding to the image data. Based on this, the color tone of the image is changed. Also with this program, the display can be continued as much as possible according to the deterioration state of the laser light source.
  • FIG. 1 shows a configuration of an image display apparatus according to an embodiment.
  • the image display device 1 includes an image signal input unit 2, a video ASIC 3, a frame memory 4, a ROM 5, a RAM 6, a laser driver ASIC 7, a MEMS control unit 8, and a laser light source unit 9. And a MEMS mirror 10.
  • the image signal input unit 2 receives an image signal input from the outside and outputs it to the video ASIC 3.
  • the video ASIC 3 is a block that controls the laser driver ASIC 7 and the MEMS control unit 8 based on the image signal input from the image signal input unit 2 and the scanning position information Sc input from the MEMS mirror 10, and is ASIC (Application Specific Integrated). Circuit).
  • the video ASIC 3 includes a synchronization / image separation unit 31, a bit data conversion unit 32, a light emission pattern conversion unit 33, and a timing controller 34.
  • the synchronization / image separation unit 31 separates the image data displayed on the screen as the image display unit and the synchronization signal from the image signal input from the image signal input unit 2 and writes the image data to the frame memory 4.
  • the bit data conversion unit 32 reads the image data written in the frame memory 4 and converts it into bit data.
  • the light emission pattern conversion unit 33 converts the bit data converted by the bit data conversion unit 32 into a signal representing the light emission pattern of each laser.
  • the timing controller 34 controls the operation timing of the synchronization / image separation unit 31 and the bit data conversion unit 32.
  • the timing controller 34 also controls the operation timing of the MEMS control unit 8 described later.
  • the image data separated by the synchronization / image separation unit 31 is written.
  • the ROM 5 stores a control program and data for operating the video ASIC 3. Various data are sequentially read from and written into the RAM 6 as a work memory when the video ASIC 3 operates.
  • the laser driver ASIC 7 is a block that generates a signal for driving a laser diode provided in a laser light source unit 9 described later, and is configured as an ASIC.
  • the laser driver ASIC 7 includes a red laser driving circuit 71, a blue laser driving circuit 72, and a green laser driving circuit 73.
  • the red laser driving circuit 71 drives the red laser LD1 based on the signal output from the light emission pattern conversion unit 33.
  • the blue laser drive circuit 72 drives the blue laser LD2 based on the signal output from the light emission pattern conversion unit 33.
  • the green laser drive circuit 73 drives the green laser LD3 based on the signal output from the light emission pattern conversion unit 33.
  • the MEMS control unit 8 controls the MEMS mirror 10 based on a signal output from the timing controller 34.
  • the MEMS control unit 8 includes a servo circuit 81 and a driver circuit 82.
  • the servo circuit 81 controls the operation of the MEMS mirror 10 based on a signal from the timing controller.
  • the driver circuit 82 amplifies the control signal of the MEMS mirror 10 output from the servo circuit 81 to a predetermined level and outputs the amplified signal.
  • the laser light source unit 9 emits laser light to the MEMS mirror 10 based on the drive signal output from the laser driver ASIC 7.
  • the MEMS mirror 10 as a scanning unit reflects the laser light emitted from the laser light source unit 9 toward the screen 11. Further, the MEMS mirror 10 moves so as to scan on the screen 11 under the control of the MEMS control unit 8 in order to display the image input to the image signal input unit 2, and the scanning position information (for example, the mirror) (Information such as angle) is output to the video ASIC 3.
  • the scanning position information for example, the mirror
  • the laser light source unit 9 includes a case 91, a wavelength selective element 92, a collimator lens 93, a red laser LD1, a blue laser LD2, a green laser LD3, a monitor light receiving element (hereinafter simply referred to as “light receiving element”). 50).
  • the case 91 is formed in a substantially box shape with resin or the like.
  • the case 91 is provided with a hole penetrating into the case 91 and a CAN attachment portion 91a having a concave cross section, and a surface perpendicular to the CAN attachment portion 91a. A hole penetrating inward is formed, and a collimator mounting portion 91b having a concave cross section is formed.
  • the wavelength-selective element 92 as a combining element is configured by, for example, a trichroic prism, and is provided with a reflective surface 92a and a reflective surface 92b.
  • the reflection surface 92a transmits the laser light emitted from the red laser LD1 toward the collimator lens 93, and reflects the laser light emitted from the blue laser LD2 toward the collimator lens 93.
  • the reflecting surface 92b transmits most of the laser light emitted from the red laser LD1 and the blue laser LD2 toward the collimator lens 93 and reflects a part thereof toward the light receiving element 50.
  • the reflection surface 92 b reflects most of the laser light emitted from the green laser LD 3 toward the collimator lens 93 and transmits part of the laser light toward the light receiving element 50. In this way, the emitted light from each laser is superimposed and incident on the collimator lens 93 and the light receiving element 50.
  • the wavelength selective element 92 is provided in the vicinity of the collimator mounting portion 91b in the case 91.
  • the collimator lens 93 emits the laser beam incident from the wavelength selective element 92 to the MEMS mirror 10 as parallel light.
  • the collimator lens 93 is fixed to the collimator mounting portion 91b of the case 91 with a UV adhesive or the like. That is, the collimator lens 93 is provided after the synthesis element.
  • the red laser LD1 as a laser light source emits red laser light.
  • the red laser LD1 is fixed at a position that is coaxial with the wavelength selective element 92 and the collimator lens 93 in the case 91 while the semiconductor laser light source is in the chip state or the chip is mounted on a submount or the like. ing.
  • Blue laser LD2 as a laser light source emits blue laser light.
  • the blue laser LD2 is fixed at a position where the emitted laser light can be reflected toward the collimator lens 93 by the reflecting surface 92a while the semiconductor laser light source is in the chip state or the chip is mounted on the submount or the like. ing.
  • the positions of the red laser LD1 and the blue laser LD2 may be switched.
  • the green laser LD3 as a laser light source is attached to the CAN package or attached to the frame package, and emits green laser light.
  • the green laser LD 3 has a semiconductor laser light source chip B that generates green laser light in a CAN package, and is fixed to a CAN mounting portion 91 a of the case 91.
  • the light receiving element 50 receives a part of the laser light emitted from each laser light source.
  • the light receiving element 50 is a photoelectric conversion element such as a photodetector, and supplies a detection signal Sd, which is an electrical signal corresponding to the amount of incident laser light, to the laser driver ASIC 7.
  • a detection signal Sd which is an electrical signal corresponding to the amount of incident laser light
  • the laser driver ASIC 7 adjusts the power of the red laser LD1, the blue laser LD2, and the green laser LD3 according to the detection signal Sd.
  • the laser driver ASIC 7 operates only the red laser driving circuit 71, supplies a driving current to the red laser LD1, and emits red laser light from the red laser LD1. A part of the red laser light is received by the light receiving element 50, and a detection signal Sd corresponding to the amount of light is fed back to the laser driver ASIC7.
  • the laser driver ASIC 7 adjusts the drive current supplied from the red laser drive circuit 71 to the red laser LD1 so that the light amount indicated by the detection signal Sd is an appropriate light amount. In this way, power adjustment is performed.
  • the power adjustment of the blue laser LD2 and the power adjustment of the green laser LD3 are similarly performed.
  • the laser driver ASIC 7 is an example of a deterioration state determination unit of the present invention
  • the image signal input unit 2 is an example of an input unit
  • the video ASIC 3 is an example of a display control unit.
  • the image data in the image signal input from the image signal input unit 2 is converted into bit data.
  • the bit data conversion unit 32 supplies bit data having gradation values of 0 to 255 to the light emission pattern conversion unit 33 for each color of RGB.
  • the light emission pattern conversion unit 33 supplies a drive waveform corresponding to the input gradation value to each of the RGB colors to the laser drive circuits 71 to 73 of the laser driver ASIC 7 to drive the lasers LD1 to LD3 of each color to emit light.
  • FIG. 2 (a) shows the relationship between the operating current and output power of the two lasers.
  • the laser light source having the characteristics indicated by the graph C1 outputs a predetermined output power Px when a predetermined maximum current that can be output by the drive circuit is applied.
  • This state is a state in which the laser has not deteriorated.
  • the deterioration state is referred to as “normal”.
  • the laser light source having the characteristics shown by the graph C2 cannot output the predetermined output power Px even when a predetermined maximum current that can be output by the drive circuit is applied. This state is referred to as the “unusable” deterioration state.
  • the laser driver ASIC 7 determines whether the deterioration state of the laser light source is normal or unusable based on the output power when the maximum current is applied to the laser light source, as can be understood from FIG. Is done. If the output power when the maximum current is applied is greater than or equal to the predetermined power Px, it is determined that the laser light source is “normal”. Further, if the output power when the maximum current is applied is less than the predetermined power Px, it is determined that the laser light source is “unusable”.
  • FIG. 2B is a chromaticity diagram showing display colors when all the laser light sources are in a normal deterioration state in the image display apparatus using the RGB three-color laser light sources.
  • the image display device can display the colors included in the triangle formed by the points R, G, and B.
  • the image display device stops the laser light source and performs display with the remaining laser light sources. That is, the image display apparatus performs display by changing the color tone using a laser light source having a normal deterioration state.
  • the image display device displays a line segment in the chromaticity diagram shown in FIG. Display using only colors on GB. Further, when it is determined that the degradation state of the green laser LD3 is also “unusable”, the image display device performs display using only blue. When it is determined that all three color lasers are unusable, the image display device stops displaying.
  • FIGS. 3A to 3C show examples of display images when the display control of this embodiment is performed.
  • FIGS. 3A to 3C are display image examples of the navigation device, and the display contents are the same. Since the display color varies depending on the deterioration state of the laser light source, the display color is shown in parentheses.
  • a message 42 indicating that in the display image. It is desirable to display.
  • FIG. 4 is a flowchart of the display control process according to the first embodiment. This process is executed by the video ASIC 3 and the laser driver ASIC 7. Further, this process is repeatedly executed at predetermined time intervals.
  • the laser driver ASIC 7 determines the deterioration state of each of the lasers LD1 to LD3 (step S11).
  • the video ASIC 3 stops the laser whose degradation state is unusable among the lasers LD1 to LD3 of the three colors (step S12), and performs display using the laser whose degradation state is normal (step S13). ).
  • the deterioration state of each laser light source is determined, the laser light source determined to be unusable is stopped, and only the laser light source whose deterioration state is determined to be normal is stopped.
  • Use to display Therefore, even if some of the plurality of laser light sources become unusable, the color of the display image changes, but the display can be continued. Therefore, even when some of the lasers become unusable, it is possible to continue displaying information as much as possible.
  • a characteristic C3 indicates a characteristic of a laser light source whose deterioration state is “normal”, and a characteristic C4 indicates a characteristic of the laser light source whose deterioration state is “decrease in efficiency”.
  • a normal laser light source starts to emit light when a predetermined rising current Ith flows as shown in the characteristic C3, and emits light with a predetermined output power Px when a predetermined current Ix flows.
  • the laser light source whose efficiency has decreased due to deterioration has a rising current Ia larger than the normal rising current Ith as shown in the characteristic C4, and the current Ib necessary for light emission at a predetermined output power Px is also normal. In this case, the current Ix becomes larger.
  • the laser driver ASIC 7 stores in advance in a memory or the like as basic characteristics of a normal laser light source such as the characteristic C3, and compares the characteristics of the laser light source to be determined with this to degrade the laser light source to be determined. Determine the state. Specifically, the laser driver ASIC 7 measures the rising current value Ia of the laser light source to be determined, compares it with the rising current value Ith of the basic characteristics, and if the rising current value Ia is larger than Ith, the laser light source It is determined that the deterioration state is “decrease in efficiency”.
  • the laser driver ASIC 7 measures the current value Ib when the laser light source to be determined outputs a predetermined output power Px, compares it with the current value Ix of the basic characteristic, and the current value Ib is Ix If it is larger, the degradation state of the laser light source may be determined as “decrease in efficiency”. Further, in the semiconductor laser, as the deterioration progresses, the current value Ib for obtaining the rising current value Ia and the predetermined output power Px increases. Therefore, the basic current rising current value Ith or the predetermined output power Px is obtained. It can be determined that the greater the difference in the current value Ix, the greater the degree of efficiency reduction.
  • FIG. 5B shows an example of display control.
  • the image display device first reduces the output of the red laser LD1, and displays the image that should be displayed in red corresponding to the point R by using the color of the point R1.
  • the displayable colors are limited within the triangle formed by the points R1, G, and B in FIG.
  • the image display device displays the image that should originally be displayed in red corresponding to the point R in the colors of the points R2 and R3.
  • the red laser LD1 becomes unusable, the red laser LD1 is stopped and is not used, so that only the color on the line segment GB is used for display.
  • the image display device reduces the output of the green laser LD3 and originally corresponds to the point G.
  • An image to be displayed in green is displayed using the color of the point G1.
  • the displayable color is limited to the color on the line segment G1B formed by the point G1 and the point B.
  • the image display apparatus displays the image that should originally be displayed in green corresponding to the point G in the colors of the points G2, G3, and G4.
  • the green laser LD3 is stopped and is not used, so that display is performed using only blue.
  • the display color shift as described above can actually be realized by using a conversion table in which colors in an image signal are associated with gradation values of RGB colors.
  • a plurality of conversion tables are prepared in advance for each level of efficiency reduction.
  • the red color corresponding to the point R has an R gradation value set to 255 in the conversion table when the deterioration state of the red laser LD1 is normal, and the deterioration state is the efficiency of the first level (corresponding to the point R1).
  • the gradation value of R is set to 192 in the conversion table in the case of reduction, and the gradation value of R is set to 128 in the conversion table in the case where the deterioration state is the efficiency reduction of the second level (corresponding to the point R2). It is said that it is done.
  • the image processing apparatus may determine the gradation value of each RGB color by referring to the corresponding conversion table according to the efficiency reduction level of each laser light source, and drive the laser of each color based on that.
  • the output of the laser when the degradation state of the laser light source is reduced in efficiency, the output of the laser is decreased. However, in order to compensate for the decrease, the output of lasers of other colors may be increased. Good. For example, when the degradation state of the red laser LD1 is reduced in efficiency, the output of the red laser LD1 is decreased and the output of the green laser LD3 and / or the blue laser LD2 whose degradation state is normal is increased. You may make it prevent that a level falls.
  • FIG. 6 is a flowchart of the display control process according to the second embodiment. This process is executed by the video ASIC 3 and the laser driver ASIC 7. Further, this process is repeatedly executed at predetermined time intervals.
  • the laser driver ASIC 7 determines the deterioration state of each of the lasers LD1 to LD3 (step S21).
  • the video ASIC 3 stops the lasers whose deterioration state is unusable among the three color lasers LD1 to LD3 (step S22).
  • the video ASIC 3 reduces the output power of the laser whose degradation state is “decrease in efficiency” than when it is “normal”, and uses the laser whose degradation state is “normal” at the basic output power for display. This is performed (step S23).
  • the life is extended by reducing the output of the laser light source when it corresponds to a decrease in efficiency. Make it possible.
  • the present invention can be used for video equipment using an RGB laser, such as a laser projector, a head-up display, and a head-mounted display.
  • RGB laser such as a laser projector, a head-up display, and a head-mounted display.
  • Image display device 3 Video ASIC 7 Laser driver ASIC 8 MEMS control unit 9 Laser light source unit 50 Light receiving element

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente invention concerne un dispositif d'affichage d'images qui entraîne une émission de lumière par une pluralité de sources lumineuses laser, et affiche une image correspondant à des données d'image saisies. Chaque source lumineuse laser détermine son état de détérioration grâce à un procédé par exemple en détectant l'émission laser. Le ton de l'image à afficher est modifié et l'image est affichée en fonction de l'état de détérioration des sources lumineuses à utiliser. Ainsi, dans le cas où la détérioration de certaines des sources lumineuses laser est grave et leur utilisation n'est pas possible, ou l'efficacité d'émission de lumière est défaillante, l'affichage de l'image se poursuit par l'interruption des sources lumineuses qui sont inutilisables et la réduction de la puissance d'émission.
PCT/JP2011/051936 2011-01-31 2011-01-31 Dispositif d'affichage d'images, procédé d'affichage d'images, programme d'affichage d'images Ceased WO2012104967A1 (fr)

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PCT/JP2011/051936 WO2012104967A1 (fr) 2011-01-31 2011-01-31 Dispositif d'affichage d'images, procédé d'affichage d'images, programme d'affichage d'images

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PCT/JP2011/051936 WO2012104967A1 (fr) 2011-01-31 2011-01-31 Dispositif d'affichage d'images, procédé d'affichage d'images, programme d'affichage d'images

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784572A1 (fr) * 2013-03-29 2014-10-01 Funai Electric Co., Ltd. Dispositif d'affichage tête haute et procédé d'affichage d'un tel dispositif
EP2784582A1 (fr) 2013-03-29 2014-10-01 Funai Electric Co., Ltd. Dispositif de projection, dispositif d'affichage tête haute, et procédé de commande de dispositif de projecteur
EP2993899A1 (fr) 2014-09-05 2016-03-09 Funai Electric Co., Ltd. Appareil de projection d'images
WO2022270343A1 (fr) * 2021-06-21 2022-12-29 日本精機株式会社 Affichage tête haute

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