WO2011114377A1 - Dispositif d'affichage et procédé d'optimisation de la position de mesure - Google Patents

Dispositif d'affichage et procédé d'optimisation de la position de mesure Download PDF

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Publication number
WO2011114377A1
WO2011114377A1 PCT/JP2010/001953 JP2010001953W WO2011114377A1 WO 2011114377 A1 WO2011114377 A1 WO 2011114377A1 JP 2010001953 W JP2010001953 W JP 2010001953W WO 2011114377 A1 WO2011114377 A1 WO 2011114377A1
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WIPO (PCT)
Prior art keywords
display
unit
white
area
video
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PCT/JP2010/001953
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English (en)
Japanese (ja)
Inventor
阿部正敏
荒井豊
Original Assignee
Ｎｅｃディスプレイソリューションズ株式会社
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Priority to JP2012505310A priority Critical patent/JP5354702B2/ja
Priority to PCT/JP2010/001953 priority patent/WO2011114377A1/fr
Publication of WO2011114377A1 publication Critical patent/WO2011114377A1/fr

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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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • 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
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the 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
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display 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
    • G09G2380/00—Specific applications
    • G09G2380/08—Biomedical applications

Definitions

  • the present invention relates to a display device that keeps a display state constant and a measurement position optimization method.
  • Patent Document 1 a technique for optimizing the positions of the front sensor (light detection unit) installed facing the display surface and the measurement display area of the display device is disclosed.
  • the display surface of the display device may move relative to the housing of the display device.
  • the shield front 21 and the backlight unit (light source unit) 50 are fixed by screws or a fitting structure.
  • the display panel 22 is disposed via the spacers 23 and 24.
  • the display panel 22 is held in a state where the display panel 22 is loosely pressed by the spacers 23 and 24 to the extent that dust or the like does not enter.
  • display unevenness may occur in the fixed portion.
  • the display panel 22 may be warped due to a difference in the coefficient of thermal expansion of the configured members, which may cause display unevenness. Therefore, it is necessary to provide a clearance around the display panel 22. Therefore, the display panel 22 is not fixed and is held loosely by the spacers 23 and 24 so that the display panel 22 can move between the spacers 23 and 24.
  • the display devices disclosed in Patent Document 1 and Patent Document 2 for example, white is displayed on the display surface using an OSD (On-Screen Display) function or the like, and the brightness is measured.
  • the display device functions to constantly maintain the brightness specified by the user of the display device by keeping the measurement value detected by the front sensor constant.
  • the positional relationship between the display surface of the display panel 22 and the front sensor may be shifted due to vibration, dead weight, or the like. If the positional relationship is shifted, the measurement value changes unintentionally, but the display device tries to maintain the display state in a constant state based on the detected measurement value.
  • the display device attempts to change the brightness of the light source by returning the measured value of the front sensor to the original value. Thereby, even if the measured value of the front sensor is the same, a situation where the actual brightness of the display surface is different occurs.
  • FIG. 8 is a diagram showing a positional relationship between a front sensor of a related display device and a display area for measurement on the display surface.
  • FIG. 8A is a diagram illustrating an initial state in which there is no shift in the display position.
  • the display device displays a measurement display area 70, which is a white area for detecting the display state, using the OSD function or the like.
  • the area of the white area in the detection area 61 of the front sensor is “a ⁇ b”.
  • FIG. 8B is a diagram illustrating a case where the display surface moves leftward by a length c.
  • the display device performs a process of increasing the brightness of the light source until the measured value of the front sensor becomes the measured value when the area is “a ⁇ b”. This process actually increases the luminance and deviates from the luminance set by the user of the display device.
  • the display devices disclosed in Patent Document 1 and Patent Document 2 have a problem of misjudging the measurement value of the front sensor (light detection unit) due to the displacement of the display surface.
  • the present invention has been made to solve the above problems, and an object of the present invention is to provide a display device and a measurement position optimization method capable of preventing erroneous determination of the measurement value of the light detection unit due to the displacement of the display surface. is there.
  • the present invention is arranged such that an image display unit having a display surface for displaying an image and a light receiving surface provided with a detection region for detecting irradiated light are opposed to the display surface.
  • a light detection unit that detects a display state of the video display unit, a black display region that covers the detection region in a movable range of the display surface at a position facing the light receiving surface, and the black display region
  • a control unit that displays a white display region having the same detection area of the light detection unit within a movable range of the display surface.
  • the control unit has a black display region that covers the detection region of the light detection unit within a movable range of the display surface at a position facing the light receiving surface of the light detection unit, and the black display region.
  • a white display area having the same detection area of the light detection unit is displayed within a movable range of the display surface.
  • FIG. 1 is a schematic block diagram showing the display device according to the present embodiment.
  • the display device 1 illustrated in FIG. 1 includes a video processing unit 10, a video display unit 20, a control unit 30, a storage unit 40, a light source unit 50, and a light detection unit 60.
  • the display device 1 will be described as a liquid crystal display for displaying video information supplied from the external device 2, for example.
  • the video processing unit 10 generates a video signal for displaying video on the video display unit 20.
  • the video processing unit 10 generates a video signal based on the video information supplied from the external device 2 and the control information supplied from the control unit 30, and supplies the generated video signal to the video display unit 20.
  • the video display unit 20 includes a display panel 22 having a display surface for displaying video. Based on the video signal supplied from the video processing unit 10, the video display unit 20 modulates the transmittance of light emitted from the light source unit 50 to display the video. indicate.
  • the light source unit 50 is disposed on the back side which is the back side of the display surface with respect to the display panel 22 of the video display unit 20, and irradiates light from the back side of the display panel 22.
  • the light source unit 50 is connected to the control unit 30 by a control signal, and changes the brightness of light supplied to the display panel 22 based on the control signal supplied from the control unit 30.
  • the light detection unit 60 is arranged to face the display surface of the display panel 22 of the video display unit 20, detects the display state of the video display unit 20, and supplies the measured value to the control unit 30.
  • the storage unit 40 stores information supplied from the control unit 30. In addition, the storage unit 40 causes the control unit 30 to refer to the stored information.
  • the information stored in the storage unit 40 includes, for example, measurement values indicating the display state detected by the light detection unit, and luminance, tone, and gamma characteristics set by the user of the display device 1 via an interface unit (not shown). It is information etc. which corrects etc.
  • the control unit 30 is connected to the video processing unit 10, the storage unit 40, the light source unit 50, and the light detection unit 60 through signal lines, and controls the entire display device 1.
  • the control unit 30 supplies control information to the video processing unit 10 and superimposes a display using an OSD (On-Screen Display) function or the like on the video based on the video information supplied from the external device 2. To display.
  • the control unit 30 supplies control information to the video processing unit 10 and performs control for causing the video processing unit 10 to change the luminance, color tone, and gamma characteristics due to the change in the transmittance of the video display unit 20.
  • the control unit 30 performs control to change the brightness of the light source unit 50 by a control signal.
  • control unit 30 performs control to maintain the display state of the video display unit 20 based on the measurement value detected by the light detection unit 60 in the display state of the video display unit 20.
  • the control unit 30 refers to the information stored in the storage unit 40, and changes the brightness of the light source unit 50 by a control signal based on the information and the measurement value detected by the light detection unit 60. Further, the control unit 30 supplies control information to the video processing unit 10 based on information stored in the storage unit 40 and measurement values detected by the light detection unit 60.
  • FIG. 2 is a diagram illustrating an example of a display screen of the display device 1 in the present embodiment.
  • FIG. 2A is a view of the display surface of the display device 1 as viewed from the front side.
  • the display panel 22 is disposed inside the shield front 21.
  • the light detection unit 60 is disposed at the end of the display panel 22 with a light receiving surface provided with a detection region for detecting irradiated light facing the display surface, and is fixed to the shield front 21.
  • the structure of the display device 1 is the same as that of the display device shown in FIG. 7, and the display panel 22 has a structure that can freely move between the spacers 23 and 24.
  • FIG. 2B is a diagram illustrating an example of the display screen of the display panel 22. In FIG.
  • a display based on the video information supplied from the external device 2 and a measurement display area 70 for detecting the display state are displayed on the display surface of the display panel 22.
  • the measurement display area 70 is displayed using the OSD function or the like, and is displayed at a position facing the light detection unit 60.
  • FIG. 3 is a diagram showing a display example of the measurement display area 70 in the present embodiment.
  • FIG. 3A shows a state before the display panel 22 moves, and is an enlarged view of the vicinity of the measurement display area 70 of FIG.
  • This figure shows a state where a display area 221 and a non-display area 222 of the display panel 22 are present, and a metal frame 223 which is a part of the shield front 21 can be seen beside the display area 221 and the non-display area 222.
  • the display panel 22 expresses the display position by coordinates with the origin as the upper right, the horizontal direction as the X axis, and the vertical direction as the Y axis.
  • the control unit 30 supplies control information to the video processing unit 10, and the measurement display region 70 including the black display region 71 and the white display region 72 therein is displayed in the display region 221 using the OSD function or the like. Display.
  • the video processing unit 10 generates a video signal based on the control information supplied from the control unit 30 and the video information supplied from the external device 2 and supplies the video signal to the video display unit 20.
  • the video signal is a video signal displayed by superimposing the measurement display area 70 on the video information supplied from the external device 2.
  • the video display unit 20 displays the video corresponding to the video information supplied from the external device 2 and the measurement display area 70 on the display panel 22 in an overlapping manner.
  • the control unit 30 displays the white display region 72 at a position and size at which the detection area in the detection region 61 of the light detection unit 60 does not change even when the display panel 22 is shifted by fx and fy.
  • the white display area 72 is, for example, a rectangle having a length in the X-axis direction as e and a length in the Y-axis direction as d.
  • the area of the white display area 72 is “d ⁇ e”.
  • the black display area 71 is displayed at a position and a size where the detection area 61 of the light detection unit 60 does not deviate from the black display area 71 even when the display panel 22 is displaced by fx and fy. That is, the black display area 71 is displayed at a position and size that always covers the detection area 61 of the light detection unit 60 within a movable range of the display surface.
  • the control unit 30 refers to the display state information previously set by the user of the display device 1 from the storage unit 40.
  • the display state information is, for example, brightness information.
  • the control unit 30 Based on the measurement value obtained by the light detection unit 60 measuring the white display area 72 and the brightness information referenced from the storage unit 40, the control unit 30 maintains the brightness of the display surface previously set by the user. It is determined whether or not.
  • the control unit 30 determines NO, controls the brightness of the light of the light source unit 50 so as to maintain the brightness state indicated by the brightness information referenced from the storage unit 40.
  • the light source unit 50 changes the brightness of light supplied to the display panel 22 based on a control signal supplied from the control unit 30.
  • the brightness previously set by the user of the display device 1 can be maintained by always performing the detection of the light detection unit 60, the determination of the control unit 30, and the control of the light source unit 50.
  • FIG. 3B is a diagram illustrating a case where the display panel 22 moves in the upper left direction.
  • the display panel 22 shows a case where the maximum deviation amount is deviated from fx in the left direction and fy in the upper direction.
  • the detection area 61 of the light detection unit 60 is near the center of the measurement display area 70a before the display panel 22 is displaced.
  • the black display area 71 and the white display area 72 are shifted from the detection area 61 in the upper left direction because the display panel 22 has moved in the upper left direction.
  • the black display area 71 and the white display area 72 are display areas in consideration of the movable range of the display panel 22.
  • the area of the white display region 72 in the detection region 61 of the light detection unit 60 is “d ⁇ e”, which is shown in FIG. It is equal to the area of the case. For this reason, even when the display panel 22 moves, the measured value of the white display area 72 by the light detection unit 60 is equal to the case of FIG. This is the same when the display panel 22 is shifted to the right or downward.
  • the control unit 30 causes the black display region 71 and the white display region 72 to be displayed on the display surface of the video display unit 20 facing the light receiving surface of the light detection unit 60.
  • the black display area 71 covers the detection area 61 of the light detection unit 60 in a movable range of the display surface.
  • the white display area 72 is an area that is displayed in the black display area 71 and has the same detection area of the light detection unit 60 in a movable range of the display surface.
  • FIG. 4 is a diagram showing a display example of the measurement display area 70 in the present embodiment.
  • FIG. 4A is a diagram illustrating a case where the display panel 22 moves in the upper left direction.
  • the display panel 22 shows a case where the maximum shift amount is fx in the left direction and fy in the upward direction.
  • the maximum shift amount in the X-axis direction of the display panel 22 is fx
  • the maximum shift amount in the Y-axis direction is fy.
  • the detection area 61 of the light detection unit 60 is near the center of the measurement display area 70a before the display panel 22 is displaced.
  • the black display area 71a is displaced in the upper left direction with respect to the detection area 61 because the display panel 22 has moved in the upper left direction.
  • the black display area 71a is displayed at a position and size that the detection area 61 of the light detection unit 60 does not deviate from the black display area 71a even when the display panel 22 is displaced by fx and fy. That is, the black display area 71 is displayed at a position and size that always covers the detection area 61 of the light detection unit 60 within a movable range of the display surface.
  • the white display area 72a is displayed at an optimal position for the light detection unit 60 to measure in the black display area 71a.
  • the optimal position that is optimal for the measurement of the white display area 72 a is determined by the control unit 30.
  • the white display area 72a is in the black display area 71a determined in consideration of the movable range of the display panel 22.
  • the white display area 72 a is also a display area determined in consideration of the movable range of the display panel 22.
  • the area of the white display area 72a is “d ⁇ e”.
  • FIG. 4B is a diagram illustrating a display example when the optimum position of the white display area 72a is determined.
  • FIG. 5 is a flowchart showing processing for determining the optimum position of the white display area 72a by the control unit 30.
  • variables I, Mx (I), My (I), Mx_max, and My_max are stored in the storage unit 40.
  • the control unit 30 initializes the variable I to “1”.
  • the variable I is a variable that determines in what column the white vertical line-shaped figure 73 (FIG. 4B) is displayed from the right end of the black display area 71a.
  • the white vertical line-shaped figure 73 is a vertical line-shaped figure having a predetermined unit width.
  • the predetermined unit width is, for example, the same width as the unit length in the X-axis direction.
  • the white vertical line-shaped figure 73 defines the measurement position in the X-axis direction based on the unit length in the X-axis direction.
  • step S302 the control unit 30 displays a white vertical line-like figure 73 at the position of the I-th column from the right end of the black display area 71a. Further, the control unit 30 stores the measurement value obtained by detecting the white vertical line-shaped figure 73 at the position of the I-th column by the light detection unit 60 in Mx (I) of the storage unit 40.
  • step S303 the control unit 30 determines whether or not the variable I is the left end (the maximum value of X) in the black display area 71a. If the control unit 30 determines that it is at the right end, the process proceeds to step S305. If the control unit 30 determines that it is not the right end, the process proceeds to step S304.
  • step S304 the control unit 30 updates the variable I, and the process returns to step S302. That is, the control unit 30 refers to the value of the variable I stored in the storage unit 40 and stores the value obtained by adding “1” in the storage unit 40 again. Next, the control unit 30 returns to the process of step S302.
  • FIG. 4B is a diagram illustrating a display example of the white vertical line-shaped figure 73 in the process of step S302. Since the series of processing from step S302 to step S304 is repeated, the white vertical line-shaped figure 73 is sequentially moved from the right end to the left end of the black display area 71a.
  • control unit 30 refers to Mx (I) stored in the storage unit 40. Further, the control unit 30 stores, in the variable Mx_max, the value of I that maximizes the measured value Mx (I) of the light detection unit 60 based on the referenced Mx (I).
  • step S306 the control unit 30 initializes the variable I to “1” again.
  • the variable I is a variable that determines on which line from the right end of the black display area 71a the white horizontal line-shaped graphic is displayed.
  • the white horizontal line-shaped figure is a horizontal line-shaped figure having a predetermined unit width.
  • the predetermined unit width is, for example, the same width as the unit length in the Y-axis direction.
  • the white horizontal line figure defines the measurement position in the Y-axis direction based on the unit length in the Y-axis direction.
  • step S307 the control unit 30 displays a white horizontal line-shaped figure at the position of the I-th row from the upper end of the black display area 71a.
  • control unit 30 stores the measurement value detected by the light detection unit 60 in the white horizontal line-shaped figure at the position of the I-th row in My (I) of the storage unit 40.
  • step S308 the control unit 30 determines whether or not the variable I is the lower end (maximum value of Y) in the black display area 71a.
  • the control unit 30 determines that it is the lower end in the black display area 71a, the process proceeds to step S310. If the control unit 30 determines that it is not the right end in the black display area 71a, the process proceeds to step S309.
  • step S309 the control unit 30 updates the variable I, and the process returns to step S307. That is, the control unit 30 refers to the value of the variable I stored in the storage unit 40 and stores the value obtained by adding “1” in the storage unit 40 again. Next, the control unit 30 returns to the process of step S307. Since the series of processing from step S307 to step S309 is repeated, the white horizontal line-shaped figure is sequentially moved from the upper end to the lower end of the black display area 71a. Although illustration of this state is omitted, in FIG. 4B, a white horizontal line-shaped graphic is displayed instead of the white vertical line-shaped graphic 73.
  • the control unit 30 refers to My (I) stored in the storage unit 40. Further, the control unit 30 stores, in the variable My_max, the value of I where the measured value My (I) of the light detection unit 60 is the maximum value based on the referenced My (I).
  • step S311 the control unit 30 determines that Mx_max and My_max are optimum positions when the white display area 72a is measured.
  • step S312 the control unit 30 displays the white display area 72a at a position centered on Mx_max and My_max.
  • the area of the white display area 72a is “d ⁇ e”. Therefore, even when the display panel 22 is displaced by the maximum displacement amounts fx and fy, the area of the white display region 72 in the detection region 61 of the light detection unit 60 is “d ⁇ e”, which is shown in FIG. Equal to the case area. For this reason, even when the display panel 22 moves, the measured value of the white display area 72a by the light detection unit 60 is equal to that in FIG. This is the same when the display panel 22 is displaced in other directions such as the right direction and the downward direction.
  • the process in which the light detection unit 60 measures the white display area 72a and the control unit 30 maintains the brightness that is the display state of the display surface set by the user is the same as in the first embodiment. It is.
  • the control unit 30 displays the black display area 71a and the white display area 72a on the display surface of the video display unit 20 at positions facing the light receiving surface of the light detection unit 60.
  • the black display area 71a covers the detection area 61 of the light detection unit 60 in a movable range of the display surface.
  • the white display area 72a is displayed in the black display area 71a.
  • the white display area 72a is an area where the detection area of the light detection unit 60 becomes equal in a movable range of the display surface. Thereby, even when the position of the display surface is displaced, the detection area “d ⁇ e” of the light detection unit 60 becomes equal.
  • the display device 1 can prevent erroneous determination of the measurement value of the light detection unit 60 due to the displacement of the display surface.
  • the control unit 30 determines that the position where the measured value of the white display area 72a by the light detection unit 60 is maximum in the black display area 71a is the optimum position (Mx_max, My_max).
  • the control unit 30 displays the white display region 72a at a position centered on the optimum position (Mx_max, My_max).
  • the display device 1 can further reduce the deviation of the measurement value of the light detection unit 60 due to the displacement of the display surface, and can detect with higher accuracy.
  • the display device 1 can maintain the display state previously set by the user of the display device 1 with higher accuracy even when the position of the display surface is displaced.
  • a display device according to a third embodiment of the present invention will be described with reference to the drawings.
  • the configuration of the display device 1 according to the present embodiment is the same as that shown in FIG.
  • the structure at the time of seeing the display surface of the display apparatus 1 from the front is the same as that of FIG.
  • the state before the display panel 22 moves is the same as that shown in FIG.
  • a display example of the measurement display area 70 in the present embodiment is the same as that in FIG.
  • FIG. 6 is a flowchart showing a process of determining the optimum position of the white display area 72a by the control unit 30 in the present embodiment.
  • the basic operation is the same as the processing of FIG. 5 of the second embodiment, but the processing of step S321 to step S326 is different.
  • the display device 1 determines the optimal display position of the white display region 72a by utilizing the fact that the measurement value of the light amount shows a mountain-shaped distribution due to the characteristics of light irradiation.
  • the control unit 30 initializes the variable I to “1”.
  • the control unit 30 stores “0” in Mx (0).
  • Step S303 when it is determined that the control unit 30 is the right end in the black display area 71a, the process proceeds to Step S323. On the other hand, when the control unit 30 determines that it is not the right end in the black display area 71a, the process proceeds to step S322.
  • step S322 the control unit 30 determines whether or not the measured value of Mx (I) is larger than the value of Mx (I-1) measured immediately before. If it is determined that the control unit 30 is large, the process proceeds to step S304. In this case, the measured value of the light detection unit 60 has not yet reached the maximum value. Since a series of processes of steps S302, S303, S322, and S304 is repeated, the white vertical line-shaped figure 73 (FIG. 4B) is sequentially moved from the right end to the left end of the black display area 71a. If the controller 30 determines NO in step S322, the process proceeds to step S323. In this case, the measured value of the light detection unit 60 has already reached the maximum value. In step S323, the control unit 30 determines that Mx (I-1), which is the measurement value immediately before the light detection unit 60, is the maximum value, and stores the value of (I-1) in the variable Mx_max. .
  • step S324 the variable I is initialized to “1” again. Further, the control unit 30 stores “0” in My (0). In Step S308, when it is determined that the control unit 30 is the lower end, the process proceeds to Step S326. If the control unit 30 determines that the lower end is not the lower end, the process proceeds to step S325.
  • step S325 the control unit 30 determines whether or not the measured value of My (I) is larger than the value of My (I-1) measured immediately before. When it determines with the control part 30 being large, it progresses to the process of step S309. In this case, the measured value of the light detection unit 60 has not yet reached the maximum value. Since a series of processes of steps S307, S308, S325, and S309 are repeated, the white horizontal line-shaped figure is sequentially moved from the upper end to the lower end of the black display area 71a. Although illustration of this state is omitted, in FIG. 4B, a white horizontal line-shaped graphic is displayed instead of the white vertical line-shaped graphic 73.
  • step S325 If the control unit 30 determines NO in step S325, the process proceeds to step S326. In this case, the measured value of the light detection unit 60 has already reached the maximum value. In step S326, the control unit 30 determines that My (I-1), which is the measurement value immediately before the light detection unit 60, is the maximum value, and stores the value of (I-1) in the variable My_max. .
  • the control unit 30 moves and displays a white vertical line-shaped figure 73 (FIG. 4B) from the right end to the left end of the black display area 71a. However, the control unit 30 determines the optimum position in the X-axis direction based on whether or not the measurement value Mx (I) is smaller than the previous measurement value Mx (I-1). Similarly, in the Y-axis direction, the control unit 30 determines the optimum position in the Y-axis direction depending on whether or not the measured value My (I) is smaller than the previous measured value My (I-1). judge.
  • symbol as FIG. 5 is the same as that of 2nd Embodiment.
  • the process in which the light detection unit 60 measures the white display region 72a and the control unit 30 maintains the brightness that is the display state of the display surface set by the user previously is the same as in the first embodiment. It is.
  • the control unit 30 displays the black display area 71a and the white display area 72a on the display surface of the video display unit 20 at positions facing the light receiving surface of the light detection unit 60.
  • the black display area 71a covers the detection area 61 of the light detection unit 60 in a movable range of the display surface.
  • the white display area 72a is an area that is displayed in the black display area 71a and in which the detection area of the light detection unit 60 is equal in a movable range of the display surface.
  • control unit 30 determines that the position where the measured value of the white display area 72a by the light detection unit 60 is maximum in the black display area 71a is the optimum position (Mx_max, My_max).
  • the control unit 30 displays the white display region 72a at a position centered on the optimum position (Mx_max, My_max).
  • the display device 1 can further reduce the deviation of the measurement value of the light detection unit 60 due to the displacement of the display surface, and can detect with higher accuracy.
  • the display device 1 can maintain the display state previously set by the user of the display device 1 with higher accuracy even when the position of the display surface is displaced.
  • control unit 30 moves and displays the white vertical line-shaped figure 73 from the right end to the left end of the black display area 71a, and the measurement value Mx (I) is the previous measurement value Mx (I-1).
  • the optimum position in the X-axis direction is determined based on whether or not the value is smaller.
  • control unit 30 moves and displays a white horizontal line figure from the upper end to the lower end of the black display area 71a, and the measured value My (I) is smaller than the previous measured value My (I-1).
  • the optimum position in the Y-axis direction is determined based on whether or not the value is reached.
  • control unit 30 does not need to measure all columns from the right end to the left end of the black display region 71a or all rows from the upper end to the lower end. Thereby, the display apparatus 1 can shorten the period required for determination of the optimal position (Mx_max, My_max) which displays the white display area 72a.
  • the display device 1 has a video display unit 20 having a display surface for displaying video and a light receiving surface provided with a detection region for detecting irradiated light, facing the display surface.
  • the detection region 61 of the light detection unit 60 is arranged in a movable range of the display surface at a position facing the light receiving surface of the light detection unit 60 and the light detection unit 60.
  • a control unit 30 to be displayed.
  • control unit 30 shown in the present embodiment determines that the position where the measured value of the white display area 72a by the light detection unit 60 is maximum is the optimum position (Mx_max, My_max), and the optimum position (Mx_max, My_max).
  • a white display area 72a is displayed.
  • the control unit 30 sequentially moves and displays the white vertical line-shaped figure 73 having a predetermined unit width in the black display region 71a in the horizontal direction (X-axis direction).
  • the control unit 30 determines the display position Mx_max in the horizontal direction (X axis direction) at which the vertical line measurement value Mx (I) obtained by measuring the white vertical line-shaped figure 73 by the light detection unit 60 is maximum.
  • control unit 30 sequentially moves and displays white horizontal line-shaped figures having a predetermined unit width in the black display area 71a in the vertical direction (Y-axis direction).
  • the control unit 30 determines the display position My_max in the vertical direction (Y-axis direction) at which the horizontal line measurement value My (I) obtained by measuring the white horizontal line figure by the light detection unit 60 is maximum. Further, the control unit 30 determines the position (Mx_max, My_max) at which the measured value of the white display region 72a is maximum based on the display position Mx_max in the horizontal direction (X-axis direction) and the display position My_max in the vertical direction (Y-axis direction). Determine.
  • the display device 1 can further reduce the deviation of the measurement value of the light detection unit 60 due to the deviation of the position of the display surface, and can measure with high accuracy. Further, the display device 1 can accurately prevent erroneous determination of the measurement value of the light detection unit 60 due to the displacement of the display surface.
  • control unit 30 shown in the present embodiment sequentially moves and displays the white vertical line-shaped figure 73 having a predetermined unit width in the black display region 71a in the horizontal direction (X-axis direction). .
  • the control unit 30 determines that the vertical line measurement value Mx (I) is smaller than the previous vertical line measurement value Mx (I-1).
  • the value in the horizontal direction (X-axis direction) corresponding to the previous vertical line measurement value Mx (I-1) is determined as the display position Mx_max in the horizontal direction (X-axis direction).
  • control unit 30 sequentially moves and displays white horizontal line-shaped figures having a predetermined unit width in the black display area 71a in the vertical direction (Y-axis direction).
  • the control unit 30 advances the previous one.
  • a value in the vertical direction (Y-axis direction) corresponding to the horizontal line measurement value My (I-1) is determined as the display position in the vertical direction (Y-axis direction).
  • control unit 30 determines the position (Mx_max, My_max) at which the measured value of the white display area 72a is maximum based on the display position My_max in the horizontal direction (X-axis direction) and the display position My_max in the vertical direction (Y-axis direction). judge. Thereby, the control unit 30 does not need to measure all the columns from the right end to the left end of the black display region 71a or all the rows from the upper end to the lower end. For this reason, the display apparatus 1 can shorten the period required for determination of the optimal position (Mx_max, My_max) which displays the white display area 72a.
  • control unit 30 shown in the present embodiment determines that the position obtained by converting the position where the measurement value of the white display area 72a by the light detection unit 60 is maximum based on a predetermined offset value is the optimum position. Then, the white display area 72a is displayed at the optimum position. Accordingly, it is possible to cope with a case where the position where the measurement value by the light detection unit 60 is maximum and the optimal position do not match due to the display range of the display panel 22 or restrictions.
  • the display device 1 shown in the present embodiment includes a gravity detection unit that detects that a force larger than a predetermined magnitude is applied and outputs a detection signal.
  • the control unit 30 performs a process of determining the optimum position based on the detection signal output from the gravity detection unit.
  • the display device 1 can perform the determination process of the optimum position with high accuracy.
  • the display apparatus 1 can prevent the erroneous determination of the measurement value of the light detection unit 60 due to the shift of the position of the display surface with high accuracy.
  • the display device 1 shown in the present embodiment includes an interface unit that receives information including setting information of the display device 1 supplied from the outside.
  • the control unit 30 performs a process of determining an optimum position based on information supplied from the interface unit. Thereby, when the user of the display device 1 recognizes the positional deviation of the display surface, the determination process of the optimum position can be performed using the interface unit.
  • the display device 1 shown in the present embodiment generates a video signal based on the light source unit 50 that is a light source of the video display unit 20, video information supplied from the outside, and control information supplied from the control unit 30. And a storage unit 40 for storing the display state (brightness, color tone, gamma characteristic) of the video display unit 20.
  • the control unit 30 causes the video processing unit 10 to generate a video signal for displaying the measurement display area 70, and based on the measurement values (brightness, color tone, gamma characteristic) detected by the light detection unit 60, the storage unit One of the process of changing at least the brightness in the light source unit 50 and the process of changing the characteristics of the video signal in the video processing unit 10 so as to match the display state (luminance, color tone, gamma characteristics) stored in the memory 40. To control. Thereby, the display device 1 can maintain the display state (luminance, color tone, gamma characteristic) previously set by the user of the display device 1 even when the position of the display surface is shifted.
  • the white display region 72 (or 72a) has been described as having a rectangular shape, but is not limited thereto.
  • the detection area of the light detection unit 60 is the same in the movable range of the display surface, it may be a circle or an ellipse, or another shape may be used.
  • the color is not necessarily white, and other colors may be used as long as the color can be distinguished from black.
  • the light detection part 60 demonstrated the form which detects a brightness, the form using the color sensor which detects a color may be sufficient.
  • control unit 30 may be controlled to maintain a display state including a color tone and a gamma characteristic in addition to the luminance.
  • control unit 30 causes the video processing unit 10 to change the luminance, color tone, and gamma characteristics via the control information in order to maintain the luminance, color tone, and gamma characteristics.
  • the video processing unit 10 includes a correction table that stores correction information for correcting luminance, color tone, and gamma characteristics. The video processing unit 10 changes the characteristics of the video signal based on the correction information stored in the correction table. Accordingly, the control unit 30 may change the correction information stored in the correction table.
  • the display device 1 has been described as a liquid crystal display, but is not limited thereto.
  • it may be applied to a plasma display, an organic EL (Electro-Luminescence) display, or the like, or may be applied to a display device of another display method.
  • the light source unit 50 is not required.
  • the control unit 30 displays the white vertical line-shaped graphic 73 or the white horizontal line-shaped graphic by sequentially moving the position for each line (one unit width).
  • the position may be sequentially moved every 2 lines (2 unit width) or 3 lines (3 unit width).
  • the control unit 30 temporarily moves the position in increments of 2 lines (2 unit widths) or 3 lines (3 unit widths) to determine the vicinity of the optimal position to some extent, and then determines the vicinity of the optimal position.
  • the position may be moved sequentially for each line (one unit width). In this case, the display device 1 can shorten the period required for the optimum position determination process for displaying the white display area 72a.
  • control part 30 demonstrated the form which moves the white vertical line
  • control part 30 demonstrated the form which moves a white horizontal line-like figure sequentially from an upper end to a lower end, the form which moves sequentially from a lower end to an upper end may be sufficient.
  • the control unit 30 may determine the optimum position of the white display region 72 (or 72a) based on the position where the measurement value by the light detection unit 60 is maximum and the vertical and horizontal offset amounts.
  • the offset amount may be dealt with by obtaining the vertical and horizontal deviation amounts between the position where the measured value is maximum and the optimum position in advance when setting the display state before shipment at a factory or the like. This is a method using that the light detection unit 60 and the white display area 72 (or 72a) can be measured under the same conditions as long as they have the same positional relationship.
  • the optimal position determination process in which the control unit 30 determines the optimal position of the white display area 72 (or 72a) is, for example, the display device 1 being shipped from the factory. It is also possible to use a form that is performed when the power is turned on for the first time. In addition, the optimum position determination process may be performed every time the power is turned on, or may be periodically performed at regular time intervals. In addition, the display device 1 may be provided with an interface unit that receives information supplied from the outside, and the optimum position determination process may be performed based on the supplied information. For example, the OSD function may be started by a key input operation by the user of the display device 1, and the optimum position determination process may be performed by selecting a processing menu using the OSD function.
  • a gravity detection unit such as a gravity sensor that detects that a force larger than a predetermined magnitude is applied and detects that a certain force is applied to the display device 1 is provided, and the gravity detection unit outputs the detected force.
  • An embodiment in which the optimum position determination process is performed based on the detection signal may be used.
  • the control unit 30 causes the storage unit 40 to store the measurement value obtained by the light detection unit 60. Further, the control unit 30 executes the optimum position determination process when the measurement value largely fluctuates from the value stored in the storage unit 40, even though the display state setting is not changed by the interface unit. But it ’s okay.
  • the display device 1 described above has a computer system inside.
  • the processing steps of the measurement position optimization method described above are stored in a computer-readable recording medium in the form of a program, and the above-described processing is performed by the computer reading and executing this program.
  • the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like.
  • the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

Landscapes

  • 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)
  • Liquid Crystal (AREA)
  • Electroluminescent Light Sources (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Control Of El Displays (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

L'invention concerne un dispositif d'affichage (1) dans lequel une unité de commande (30) amène une unité d'affichage vidéo (20) à afficher une zone d'affichage noire qui couvre une zone de détection d'un détecteur optique (60) dans une plage mobile d'une surface d'affichage de l'unité d'affichage d'image et une zone d'affichage blanche dans laquelle la zone de détection du détecteur optique (60) ne change pas dans la zone d'affichage noire dans la plage mobile de la surface d'affichage, dans une surface d'affichage de l'unité d'affichage vidéo dans des positions opposées au détecteur optique (60).
PCT/JP2010/001953 2010-03-18 2010-03-18 Dispositif d'affichage et procédé d'optimisation de la position de mesure WO2011114377A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012505310A JP5354702B2 (ja) 2010-03-18 2010-03-18 表示装置及び測定位置最適化方法
PCT/JP2010/001953 WO2011114377A1 (fr) 2010-03-18 2010-03-18 Dispositif d'affichage et procédé d'optimisation de la position de mesure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/001953 WO2011114377A1 (fr) 2010-03-18 2010-03-18 Dispositif d'affichage et procédé d'optimisation de la position de mesure

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013046432A1 (fr) * 2011-09-30 2013-04-04 Ｎｅｃディスプレイソリューションズ株式会社 Appareil d'affichage
JP2013228577A (ja) * 2012-04-26 2013-11-07 Canon Inc 画像表示装置

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JP2007052105A (ja) * 2005-08-16 2007-03-01 Sharp Corp 表示装置
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JP2008159550A (ja) * 2006-12-26 2008-07-10 Toshiba Corp バックライト制御装置及びバックライト制御方法
JP2008298834A (ja) * 2007-05-29 2008-12-11 Sharp Corp 液晶表示装置

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Publication number Priority date Publication date Assignee Title
JP2007052105A (ja) * 2005-08-16 2007-03-01 Sharp Corp 表示装置
JP2008079113A (ja) * 2006-09-22 2008-04-03 Seiko Epson Corp プロジェクタおよび調整方法
JP2008159550A (ja) * 2006-12-26 2008-07-10 Toshiba Corp バックライト制御装置及びバックライト制御方法
JP2008298834A (ja) * 2007-05-29 2008-12-11 Sharp Corp 液晶表示装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013046432A1 (fr) * 2011-09-30 2013-04-04 Ｎｅｃディスプレイソリューションズ株式会社 Appareil d'affichage
US9414514B2 (en) 2011-09-30 2016-08-09 Nec Display Solutions, Ltd. Display apparatus
JP2013228577A (ja) * 2012-04-26 2013-11-07 Canon Inc 画像表示装置

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JPWO2011114377A1 (ja) 2013-06-27

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