CN103443842A - Device for actuating display having view angle dependent representation of different images and display comprising the device - Google Patents

Device for actuating display having view angle dependent representation of different images and display comprising the device Download PDF

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Publication number
CN103443842A
CN103443842A CN2011800628369A CN201180062836A CN103443842A CN 103443842 A CN103443842 A CN 103443842A CN 2011800628369 A CN2011800628369 A CN 2011800628369A CN 201180062836 A CN201180062836 A CN 201180062836A CN 103443842 A CN103443842 A CN 103443842A
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CN
China
Prior art keywords
display
temperature
aforementioned
pixel
described device
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Granted
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CN2011800628369A
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Chinese (zh)
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CN103443842B (en
Inventor
M.林德纳
K.科塔罗
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Robert Bosch GmbH
Epson Imaging Devices Corp
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Robert Bosch GmbH
Epson Imaging Devices Corp
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Publication of CN103443842A publication Critical patent/CN103443842A/en
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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
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/398—Synchronisation thereof; Control thereof
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • 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
    • G09G2320/041—Temperature compensation
    • 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
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N2013/40—Privacy aspects, i.e. devices showing different images to different viewers, the images not being viewpoints of the same scene
    • H04N2013/403—Privacy aspects, i.e. devices showing different images to different viewers, the images not being viewpoints of the same scene the images being monoscopic

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The invention relates to a device (1) for actuating a display (7). The display (7) can provide a viewer with two different image contents from different viewing directions and has image points arranged in lines and columns. The device (1) comprises a processor (7), an actuating unit (3, 6) for the display, and a correction device (5) having a storage unit, wherein correction means for a brightness correction of an image point depending on the brightness of a neighboring image point are implemented in the storage unit. According to device (1), a temperature detection means (4) for detecting the temperature in the region of the display (7) and a forwarding means for forwarding a temperature value to the correction installation are provided. The correction device (5) is designed to correct the brightness of an image point depending on the temperature in the region of the display (7).

Description

For control according to visual angle show different images display device and there is the display of such device
Background technology
From the known auto industry of prior art and the so-called dual view display in the fittings supply industry of auto industry.Dual view display can provide from different lines of vision to the beholder two kinds of different picture materials.Therefore, this technology can show that the driver is invisible and because legal provisions do not allow the image (DVD, video, TV) of the activity seen yet for the passenger.
In order for example can clearly to distinguish the picture material for driver and passenger, a lot of effort have been done, the crosstalking or optics and/or electrical properties the crosstalking to passenger image of driver's image to driver's image with the optics of avoiding passenger image especially and/or electrical properties.Crosstalk and also improved generally the picture quality of dual view display by inhibition, because the picture material of a side is not disturbed the picture material of opposite side.
In order to suppress to disturb, the data content of the data content of pixel based on its neighbor for example proofreaied and correct via table of corrections.Proofread and correct also can relate to sub-pix, be the sub-pix (Subpixel) of so-called colour element (Farbbildpunkt or Farbpixel), wherein colour element comprises for example red, green and blue sub-pix.
Table of corrections is regularly prepared corrected value for each brightness value of pixel to be corrected about the brightness value ground of adjacent sub-pix.
This type of table of corrections is usually realized with hardware, FPGA (field programmable gate array) or ASIC (special IC) and is generally combined with the controller for display (Display or Anzeige).
Summary of the invention
The present invention based on task be to provide for controlling the device of display, can improve in this device ground compensate for crosstalk artifact (ü bersprechartefakt).
This task is resolved by claim 1 and 12 described features.Favourable and suitable improvement project of the present invention have been described in the dependent claims.
The present invention is from for controlling the device of display, this display can provide two kinds of different picture materials and have the pixel of being arranged to row and column from two different lines of vision to the beholder, described device comprises computing unit, controlling unit and, with the means for correcting of storage unit, wherein in storage unit, forming and pixel is carried out to the aligning gear of gamma correction according to the brightness of neighbor for display.
Core of the present invention is to be provided with for detection of the temperature testing organization of the temperature in the zone of display with for passing on temperature value to the transfer device of means for correcting, and this means for correcting is designed to, according to the temperature in the zone of display, pixel is carried out to gamma correction.The present invention has utilized following understanding, and pixel is relevant with temperature to crosstalking of pixel.If there is no the correction of controlled temperature, although the image that especially under low temperature condition, has conventional gamma correction a line of vision yet may occur strongly crosstalking to the image of another line of vision.
Preferably leave table of corrections in for the corrected value that pixel is carried out to gamma correction.According to temperature, the part of means for correcting can be avoided mutually or for example replace through the table of corrections of revising, especially sub-table of corrections by another.This has been effectively, because have recognized that in the present invention only the partial correction data must be adjusted via temperature.
in addition, this advantage had is: although will consider temperature at timing, the expansion of correction data and thereby the expansion of memory location optional haply, only solve the initial memory location demand of part but improve storage demand (if any).Therefore use frugally hardware resource in short supply in control device, as memory location.
For the resource that memory location is optimized is used, the suggestion corrections device is configured to, measured temperature and the brightness value of pixel to be corrected according to temperature testing organization, by table of corrections, especially determine corrected value according to allocation table (Zuordnungstabelle) or question blank (Lookup-Tabelle).Therefore basically can consider following structure, only not be corrected for part brightness value generation correction and remaining brightness value lower than temperature threshold the time in this structure.Such solution is enough in principle, and is not increasing expense aspect the size of memory location.
When all brightness values are corrected, can realize the improvement of picture quality in principle.
Means for correcting and/or regulation device (Einsteuereinrichtung) for example can utilize field-programmable gate device (FPGA) to realize.
The temperature of temperature testing organization preferably is transferred to FPGA via interface, for example SPI interface.
Yet also can consider, temperature sensor together with FPGA and/or for example the computing unit of microcontroller be positioned on a circuit board.
In addition, for detection display actuator temperature (finally depending on this display temperature) especially accurately, suggestion connects temperature sensor on display.
In preferred expansion scheme related to this of the present invention, for the means for correcting of the brightness value of correction pixels by the brightness value of this pixel be applied to table of corrections row address (Zeilenadresse) on the contrary upper and the brightness value of neighbor is applied on column address or, and read the corrected value for controlling on the position through addressing.
Can consider that a plurality of table of corrections come for a plurality of temperature thresholds and/or different cause of cross talk.
The accompanying drawing explanation
A plurality of embodiment of the present invention is shown in the drawings and followingly in explanation other details and advantage situation, elaborate.
Fig. 1 illustrates the actuation means had for the temperature correction of dual view display with schematic connection box;
Fig. 2 shows the process flow diagram for crosstalk correction;
Fig. 3 and Fig. 4 show other two embodiment of crosstalk correction with the process flow diagram form.
Embodiment
The embodiment for the device 1 of controlling display according to Fig. 1 comprises microcontroller 2, FPGA3 and temperature sensor 4.
This temperature sensor 4 is connected on microcontroller 2.This FPGA device 3 comprises for the circuit block 5 of image correcting data and the circuit block 6 for controlling dual view display 8.This microcontroller 2 is connected with FPGA3 via interface 8, is transferred to FPGA and is corrected there piece 5 via described microcontroller 2 temperature and analyze.
The correction (box 17) of the video data of input can be carried out according to the process flow diagram according to Fig. 2.
forbrightness value Y to be corrected at first with this value, independently check on display or the temperature in the zone of display whether higher than predetermined threshold voltage Thr.This illustrates by decision box (Entscheidungsbox) 9.If this temperature, higher than predetermined threshold temperature, is proofreaied and correct in table of corrections 11 according to the y of branch so.If this temperature is lower than predetermined threshold temperature, so towards direction n branch.Now according to brightness value Y make decision (referring to decision box 10).If brightness value Y higher than predetermined value, proofreaies and correct (y of branch) so.If this brightness value is less than illustrated threshold value on the contrary, do not proofread and correct so (n of branch).In this case, take for the initial brightness value of controlling display 7 is basis.
Via table of corrections 11, can be proofreaied and correct, its mode in pixel, depend on the brightness value Y1 of brightness value Y of neighbor and add or deduct corrected value △ Y.For this reason, the brightness value Y1 of this pixel can be applied to the upper and brightness value Y2 this neighbor of row address z in table of corrections 11, and can be applied to column address s upper, read this corrected value accordingly on the position through addressing and be used to control display 7 in the pixel be corrected.
In the situation that proofread and correct according to the process flow diagram according to Fig. 2, when the temperature of display, lower than predetermined threshold value Thr and when brightness value Y is lower than predetermined value in addition, do not carry out the correction of brightness value.Therefore, for such combination, do not need correction data, the memory location for table of corrections 11 can keep littlely thus.
In case of necessity, compare with conventional correction and do not need additional memory location in FPGA.But, for example cancel the correction ratio of some brightness value combinations, higher than the temperature threshold time difference, in the room temperature situation when the temperature lower than predetermined.
however,the improvement of quality can realize in the following manner, lower than threshold temperature Thr the time and at brightness value, proofreaies and correct (referring to Fig. 3) via additional table 12 in lower than predetermined value situation.
Can realize the improvement of proofreading and correct when according to brightness value and/or temperature threshold, making meticulousr decision, according to the structure of Fig. 4, show this point.Basically also be corrected with brightness values equally all in Fig. 3 in this case, yet in the situation that make decision during lower than specific brightness value and distinguished according to display temperature.In Fig. 4, introduce other two temperature threshold T1 and T2 in decision box 15 and 16, then they be branched off on table of corrections 13 and 14.
Can know as from Fig. 2 to Fig. 4, can consider many different structures with different table of corrections, wherein can explain different cause of cross talk.
Yet the correction relevant with temperature on foreground is at least for partial pixel.

Claims (12)

1. the device (1) for controlling display (7), described display (7) can provide from different lines of vision to the beholder two kinds of different picture materials and have the pixel of being arranged to row and column, described device (1) comprises computing unit (2), control unit (3 for display (7), 6) and with the means for correcting (5) of storage unit, wherein in described storage unit, realize for according to the brightness of neighbor, pixel being carried out to the aligning gear of gamma correction, it is characterized in that, be provided with for detection of the temperature testing organization (4) of the temperature in the zone of display with for passing on the transfer device (8) of temperature value to means for correcting (5), and described means for correcting (5) is designed to, according to the temperature in the zone of display, pixel is carried out to gamma correction.
2. device according to claim 1, is characterized in that, for the corrected value that pixel is carried out to gamma correction, leaves table of corrections (11,12,13,14) in.
3. according to the described device of one of aforementioned claim, it is characterized in that, described means for correcting (5) is constituted as, and according to temperature testing organization, measured temperature (T) and the brightness value (Y) of pixel to be corrected are determined corrected value by table of corrections (11,12,13,14).
4. according to the described device of one of aforementioned claim, it is characterized in that, described means for correcting (5) is realized in FPGA (3).
5. according to the described device of one of aforementioned claim, it is characterized in that, the described actuation means for display (6) is realized at FPGA (3).
6. according to the described device of one of aforementioned claim, it is characterized in that, temperature data (T) can be transferred to FPGA (3) via interface (8).
7. according to the described device of one of aforementioned claim, it is characterized in that, temperature sensor (4) is positioned on a circuit board with FPGA (3) and/or computing unit (2).
8. according to the described device of one of aforementioned claim, it is characterized in that, temperature sensor (4) is arranged on display.
9. according to the described device of one of aforementioned claim, it is characterized in that, for the means for correcting (5) of the brightness value (Y) of correction pixels by the brightness value of this pixel (Y) be applied to the row address (z) of table of corrections (11,12,13,14) upper and by the brightness value of neighbor (Y) be applied to described table of corrections (11,12,13,14) column address (s) on the contrary upper or, and read the corrected value for controlling at this on the position of addressing.
10. according to the described device of one of aforementioned claim, it is characterized in that, do not proofread and correct during lower than predetermined temperature threshold (Thr) with lower than predetermined brightness value.
11. according to the described device of one of aforementioned claim, it is characterized in that, the correction for all brightness values (Y) of pixel occur.
12. there is the display according to the described device of one of aforementioned claim.
CN201180062836.9A 2010-10-27 2011-10-05 Show the device of the display of different images for manipulation according to visual angle and there is the display of such device Expired - Fee Related CN103443842B (en)

Applications Claiming Priority (3)

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DE102010043005.6 2010-10-27
DE102010043005A DE102010043005A1 (en) 2010-10-27 2010-10-27 Device for controlling a display and display with a device for driving
PCT/EP2011/067380 WO2012055683A1 (en) 2010-10-27 2011-10-05 Device for actuating a display having a view angle dependent representation of different images and display comprising such a device

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CN103443842B CN103443842B (en) 2016-10-12

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WO (1) WO2012055683A1 (en)

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CN103443842B (en) 2016-10-12
EP2633511A1 (en) 2013-09-04
WO2012055683A1 (en) 2012-05-03

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