EP3079141A1 - Transparente lichtmessvorrichtung, insbesondere für eine elektronische anzeigevorrichtung und verfahren zur überwachung einer elektronischen anzeige - Google Patents

Transparente lichtmessvorrichtung, insbesondere für eine elektronische anzeigevorrichtung und verfahren zur überwachung einer elektronischen anzeige Download PDF

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Publication number
EP3079141A1
EP3079141A1 EP15162819.5A EP15162819A EP3079141A1 EP 3079141 A1 EP3079141 A1 EP 3079141A1 EP 15162819 A EP15162819 A EP 15162819A EP 3079141 A1 EP3079141 A1 EP 3079141A1
Authority
EP
European Patent Office
Prior art keywords
light
display
accordance
display screen
image
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.)
Withdrawn
Application number
EP15162819.5A
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English (en)
French (fr)
Inventor
Georg Hofmann
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.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
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 Delphi Technologies Inc filed Critical Delphi Technologies Inc
Priority to EP15162819.5A priority Critical patent/EP3079141A1/de
Publication of EP3079141A1 publication Critical patent/EP3079141A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • 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
    • G09G2360/144—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light being ambient light
    • 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
    • G09G2360/147—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen the originated light output being determined for each pixel
    • 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
    • G09G2380/10—Automotive applications
    • 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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • 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
    • 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
    • G09G3/36—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 using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/10—Intensity circuits

Definitions

  • the present invention relates to a transparent light sensing device and, in particular, to a transparent light sensing device for an electronic display device and to a method for monitoring an electronic display.
  • Displays of all types are common in automotive applications.
  • the display may comprise a combination of electrical and mechanical parts, such as lamps and gauges, or electronic display technology such as TFT, LCD, OLED or head-up technology.
  • One way to monitor the content, i.e. the text and/or image, shown by an electronic display is to provide a conventional camera that captures the content shown to the driver.
  • the image captured by the camera may be processed using image processing technology and compared with a stored image or any kind of data representing the image to determine whether the display is showing the correct content.
  • a special camera for this purpose entails additional cost and complexity.
  • space is at a premium in a vehicle cockpit, which makes the placement of such a camera difficult.
  • a first aspect of the invention provides a transparent light sensing device that comprises a sensing element with a plurality of transparent sensor areas.
  • transparency also includes translucency to the extent that a translucent material enables the formation or transmission of an image with little or no distortion of the image.
  • Each sensor area includes a light-sensitive material and is configured to convert the light passing through the sensor into an electrical signal.
  • the light sensing device further comprises a detector circuit to receive and process the electrical signal from each of the sensor areas into a format that can be processed by a computer or an embedded system.
  • the light sensing device in accordance with the present invention can be used to detect the light transmitted through a transparent object, for example, through a window or plate glass with, at most, a minimal obstruction of the view through said window or glass. Accordingly, the light sensing device is more flexible in its placement than a conventional camera having an opaque housing.
  • the light sensing device is paired with a display screen to provide an electronic display device with a monitoring function.
  • the display screen comprises a plurality of display regions, and the light sensing device is arranged adjacent to the display screen such that the sensor areas of the sensing element overlap the display regions.
  • the display regions of the display screen are configured to form an image or display text by emitting light or by reflecting ambient light through at least one of the sensor areas of the sensing element.
  • Each sensor area converts the light transmitted through it into an electrical signal received by the detector circuit of the light sensing device, which processes the electrical signal from each of the sensor areas into a format that can be processed by a computer or an embedded system.
  • the electronic display device further comprises a control system that receives the formatted electrical signals from the detector circuit and compares the electrical signal corresponding to each sensor area with pre-determined data. If the control system determines that the electronic signal from a sensor area does not correspond to the pre-determined data, the control system may react in a pre-defined manner, such as by providing an alert or by initiating a treatment of the issue.
  • the pre-determined data may correspond to a parameter of the light emitted by the display regions of the display screen, such as its brightness or color. If a display region of the display screen is only used to display one pre-determined symbol, the brightness and/or color of the display region can be monitored by the corresponding sensor area to determine whether the symbol is shown.
  • each pixel of an electronic display screen may be considered as an independent display region. Accordingly, each pixel of the display screen can be monitored separately if the sensing element of the light sensing device comprises an appropriately sized and arranged sensor area for each display pixel.
  • This variant may be used to monitor a display screen that shows different, changing symbols, images or words.
  • a graphics processing unit of the control system may process the electrical signals for each pixel into an image, while a comparison unit compares the processed image with suitable data, such as an image signature that represents the image corresponding to the correct or anticipated image.
  • the placement of the light sensing device relative to the display screen may vary as long as the light sensing device and display screen are adjacent to one another.
  • this may mean that the sensing element of the light sensing device is placed in front of or behind the display screen or is even integrated into a display structure.
  • the sensing element may be arranged directly on the display screen itself or arranged on or integrated into the windshield, windows, or the glass covering the instrumentation panel.
  • the sensing element may also be arranged between the display screen and a light source, in particular a backlight of the display screen.
  • the sensing element may even be formed as a layer of the display screen, which may comprise, for example, OLED, LCD or TFT technology. This flexible placement of the light sensing device results in a compact and unobtrusive device.
  • the electronic display device may comprise a closed-loop system in which the control system controls the display screen based on the electrical signals received from the sensor areas to improve reliability or the appearance of the image shown at the display screen.
  • control system may adjust the operational parameters of at least one display region of the display screen in dependence on the electrical signal generated by the sensor area corresponding to said display region. For example, if the control system determines that the light emitted from a sensor area is insufficiently bright or has the wrong color, the control system may respond by adjusting the brightness or wavelength of the emitted light, thus enhancing the visibility of the displayed image.
  • control system may command a first display region to emit light to form an image in dependence on the electrical signal generated by a sensor area corresponding to a second display region.
  • control system may command another display region to display the image intended for the defective display region, thus increasing the reliability of the device.
  • the light sensing device may include a sufficiently transparent, organic solar cell.
  • the sensor areas of the sensing element may comprise light-sensitive materials used in organic solar cells or materials similar to those used in organic solar cells.
  • Such materials include organic salts or molecules, which are configured to react to a specific range of wavelengths of light and convert the transmitted light into electric signals. Instead of using the electrical signals to generate energy, they are transmitted to the detector circuit and processed by the control system into an image.
  • other materials that are suitable for forming a transparent light sensing device such as electronic semiconductor materials.
  • a second aspect of the present invention provides a method of monitoring an electronically displayed image comprising the steps of forming an image by emitting or reflecting light from a plurality of display regions of a display screen; transmitting the emitted or reflected light through a plurality of transparent sensor areas of a sensing element of a transparent light sensing device; converting the light transmitted through each sensor area to an electrical signal; receiving and processing the electrical signal received from each sensor area into a format that can be processed by a computer or an embedded system; and comparing each formatted signal received from the sensing element with pre-determined data.
  • the method comprises the additional step of adjusting the operational parameters of one or more display regions, in particular the brightness or wavelength of the emitted light, in dependence on the comparison of the formatted signal and the pre-determined data.
  • the ambient light surrounding the display screen may be determined, and the brightness of the emitted light adjusted accordingly, so that the emitted light is brighter than the ambient light. This results in improved visibility of the displayed image. Additionally, the influence of the ambient light may be eliminated from the formatted signals received from the sensing element by means of software calculations prior to the comparison of the formatted signals with the pre-determined data. This results in a more accurate comparison between the electrical signals of the sensing element and the pre-determined data.
  • the method may comprise the additional step of commanding a first display region to emit light to form an image in dependence on the comparison between a formatted signal corresponding to a second display region with its pre-determined value. In this way, when a defective display region is detected by the control system, its contents may be displayed at a different, operational display region.
  • the display screen comprises a projection surface such as the windshield of a vehicle, and the image is formed by reflecting light from a light source from the projection surface, in particular from a laser light source, in the manner of a head up display.
  • the light sensing device may be placed so that it monitors the reflected image, or the light sensing device may be placed in the path of the beam emitted from the light source between the light source and the projection surface. This embodiment makes it possible to accurately and unobtrusively monitor the contents projected by a head-up device.
  • the display screen of the foregoing embodiments may display content or information comprising text, images or symbols alone or in combination with one another.
  • the following description refers only to images, but it is understood that this expression also extends to these other types of content shown by the display screen.
  • a transparent light sensing device 10 comprises a sensing element 12 having a plurality of transparent sensor areas 14, 14' that comprise a light-sensitive material.
  • the sensor areas 14, 14' comprise both large sensor areas 14 as well as small sensor areas 14'.
  • the transparent light sensing device 10 may therefore be arranged on a transparent material 16 with at most minimal obstruction of the visible radiation passing through the transparent material 16 ( Fig. 1 b) .
  • Fig. 1 a shows a sensing element 12 that only covers a portion of the surface area of the transparent material 16, it is also possible to cover the entire visible surface area of the transparent material 16 with the sensing element 12.
  • Fig. 1b shows the light sensing device 10 and specifically the sensing element 12 as a layer formed on top of the transparent material 16, it is also conceivable to form the light sensing device 10 as part of the transparent material 16 itself.
  • each of the sensor area 14, 14' is configured to convert the light rays L that pass through the sensor area 14, 14' into an electrical signal, which is received by a detector circuit 18 ( Fig. 1 a) that process the electrical signal received from each sensor area 14, 14' into a format that can be processed by a computer or by an embedded system.
  • FIG. 2 indicates one active display region 24, but it is understood that the display screen comprises further display regions that are inactive in the drawing. Additionally, though the display region 24 comprises multiple image pixels that form a warning symbol, it is also possible to consider each pixel as its own display region.
  • the shown display screen comprises a display driver 26, backlight LED 28, and a light guide 30.
  • the sensing element 12 of the light sensing device 10 is arranged adjacent to the display screen, i.e. on top of the display screen 32 ( Fig. 3 ).
  • the sensing element 12 of the light sensing device 10 it is also possible for the sensing element 12 of the light sensing device 10 to be integrated into the display screen itself.
  • the small sensor areas 14' of the sensing element 12 overlap with the display region 24 of the display screen.
  • the sensing element 12 is interrupted by a broken line, but it is understood that the display region 24 is entirely covered by the sensor areas 14'.
  • the larger sensor areas 14 of the sensing element 12 cover, for example, the aforementioned, inactive additional display regions.
  • the electronic display device 22 comprises a housing 34 that contains the display screen components.
  • the light sensing device 10 in Fig. 3 is arranged above the housing 34, it is also possible for the display screen and the light sensing device 10 to be arranged in a common housing.
  • the backlight LED 28 which are mounted, for example, on a circuit board 36, emit light rays L that are reflected off a reflector 38 and through the light guide 30 and the display glass 32, such as a TFT display glass. After the light rays L exit the display glass 32, they pass through the sensor areas 14 of the sensing element 12.
  • the light-sensitive material of each sensor area 14 is configured to react to the light, for example, the brightness or the wavelength of the transmitted light ray L, and generate an electrical signal transmitted to the detector circuit 18.
  • the detector circuit 18 then processes the received signals into a format suitable for processing by a computer or an embedded system and transmits the signals to a control system 40, for example a microcontroller, as shown in Fig. 4 .
  • Fig. 4 illustrates that the formatted signals from the detector circuit 18 are received by a graphics processing unit 42 to process the signals into data representing an image.
  • the data created by the graphics processing unit 42 is then transmitted to a comparison unit 44, that compares the data with pre-determined data 46, such as an image signature representing the expected image, to determine both whether the display screen is operational, i.e. displays an image, and whether the displayed image is correct. If the comparison unit 44 determines that the data representing the image do not correspond to the pre-determined data 46, the control system 40 may initiate an appropriate reaction, such as an alert, to which another external device may react.
  • the control system 40 may also initiate a suitable internal reaction in a digital content creation module 50, for example so that the display screen displays a warning or error message that a portion of the display screen is not working correctly.
  • a further graphics processing unit 48 that generates the display content by communicating with the display driver 26 and the digital content creation module 50 may adjust the corresponding parameters of the image to be displayed and/or of the display screen to adjust the brightness or the wavelength of the light emitted by the backlight 28.
  • control system 40 may command the digital content creation module 50 to display the desired symbol at another display region with no monitored defects.
  • control system 40 may also determine the brightness of the ambient light surrounding the electronic display device using a suitable sensor (not shown), and the graphics processing unit 42 may eliminate the influence of the ambient light from the processed image by means of software calculations prior to the comparison of the image to the pre-determined data 46.
  • the graphics processing unit 48 and/or the display driver 26 may adjust the parameters of the display screen based on the detected brightness of the ambient light.
  • the light sensing device 10 may be arranged between a display glass and a backlight in an electronic display device, for example, a TFT device.
  • the light sensing device 10 is used to monitor a reflected image of the image shown at the display screen.
  • both the light sensing device 10 and the display screen may be formed using the same technology, for example organic technology, such that they can be manufactured as layers of a single device.
  • the electronic display device 22 uses a technology that incorporates self-illuminated pixels, for example OLED or tube-type displays, then the source of light is not the backlight, but rather the pixel itself.
  • the light sensing device 10 may be placed in any configuration adjacent to the display screen as long as the light emitted by the pixels passes through the sensor areas. As described above, this may be in front of the display screen or even integrated into the display screen.
  • the light sensing device 10 may be arranged on, in or behind a passive display screen that does not use or contain its own light source so that that the display screen reflects ambient light, but does not actively emit light in the way shown in Fig. 1 a and 1 b.
  • the light sensing device 10 may also be arranged at, on or integrated in a vehicle windshield so that it may monitor a reflected image projected by the light source of a head-up display system. If a light beam is used as a light source, for example a projector or a laser light source, the light sensing device 10 may be placed anywhere within the path of the light beam containing the image information to be monitored. However, the light sensing device 10 may also be placed at a projection surface, such as the windshield of a vehicle.

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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)
EP15162819.5A 2015-04-08 2015-04-08 Transparente lichtmessvorrichtung, insbesondere für eine elektronische anzeigevorrichtung und verfahren zur überwachung einer elektronischen anzeige Withdrawn EP3079141A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15162819.5A EP3079141A1 (de) 2015-04-08 2015-04-08 Transparente lichtmessvorrichtung, insbesondere für eine elektronische anzeigevorrichtung und verfahren zur überwachung einer elektronischen anzeige

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15162819.5A EP3079141A1 (de) 2015-04-08 2015-04-08 Transparente lichtmessvorrichtung, insbesondere für eine elektronische anzeigevorrichtung und verfahren zur überwachung einer elektronischen anzeige

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EP3079141A1 true EP3079141A1 (de) 2016-10-12

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020007557A1 (de) * 2018-07-05 2020-01-09 Siemens Mobility GmbH Verwendung eines zumindest im wesentlichen transparenten bildaufnehmenden sensors zum überprüfen einer mittels einer anzeigeeinheit generierten anzeige und anzeige-prüf-system
JP2020042189A (ja) * 2018-09-11 2020-03-19 株式会社デンソー 表示装置
DE102018130151A1 (de) * 2018-11-28 2020-05-28 Valeo Schalter Und Sensoren Gmbh Spiegeleinheit für ein Head-Up-Display
DE102018130150A1 (de) * 2018-11-28 2020-05-28 Valeo Schalter Und Sensoren Gmbh Head-Up-Display
EP3680883A1 (de) * 2019-01-11 2020-07-15 Audi Ag Anzeigevorrichtung und fahrzeug mit der anzeigevorrichtung
CN112053773A (zh) * 2019-06-07 2020-12-08 德尔格制造股份两合公司 用于显示电子医疗设备的输出的显示系统和方法
CN113226826A (zh) * 2018-12-17 2021-08-06 奥迪股份公司 显示设备和包括该显示设备的车辆
CN114544146A (zh) * 2020-11-24 2022-05-27 苏州佳世达电通有限公司 光学感测装置及显示装置
US11594159B2 (en) 2019-01-09 2023-02-28 Dolby Laboratories Licensing Corporation Display management with ambient light compensation
IT202200006290A1 (it) * 2022-03-30 2023-09-30 Hitachi Rail Sts S P A Gruppo di verifica, per verificare l'attendibilita' di informazioni di veicolo visibili su uno schermo video, in particolare per un veicolo su rotaia
WO2024055318A1 (zh) * 2022-09-16 2024-03-21 京东方科技集团股份有限公司 显示模组及其驱动方法、显示装置

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Publication number Priority date Publication date Assignee Title
EP0854424A1 (de) * 1997-01-20 1998-07-22 Gec Alsthom Transport Sa Sichere Darstellung einer Bildschirmdatei
JP2001041852A (ja) * 1999-07-30 2001-02-16 Fujitsu Kiden Ltd 表示異常検出装置、及びフォトセンサユニット
JP2004361457A (ja) * 2003-06-02 2004-12-24 Fujitsu Ten Ltd マルチ画面表示装置
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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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