DE19908116A1 - Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program - Google Patents

Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program

Info

Publication number
DE19908116A1
DE19908116A1 DE19908116A DE19908116A DE19908116A1 DE 19908116 A1 DE19908116 A1 DE 19908116A1 DE 19908116 A DE19908116 A DE 19908116A DE 19908116 A DE19908116 A DE 19908116A DE 19908116 A1 DE19908116 A1 DE 19908116A1
Authority
DE
Germany
Prior art keywords
brightness
contrast
interpreted
screen
software program
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Withdrawn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
DE19908116A
Other languages
German (de)
Inventor
Markus Beringer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19908116A priority Critical patent/DE19908116A1/en
Publication of DE19908116A1 publication Critical patent/DE19908116A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/57—Control of contrast or brightness
    • H04N5/58—Control of contrast or brightness in dependence upon 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
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4143—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a Personal Computer [PC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/422—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS]
    • H04N21/42202—Input-only peripherals, i.e. input devices connected to specially adapted client devices, e.g. global positioning system [GPS] environmental sensors, e.g. for detecting temperature, luminosity, pressure, earthquakes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
    • H04N21/4318—Generation of visual interfaces for content selection or interaction; Content or additional data rendering by altering the content in the rendering process, e.g. blanking, blurring or masking an image region
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Ecology (AREA)
  • Remote Sensing (AREA)
  • Environmental Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

The method involves matching the light intensity of a reproduced image to the ambient lighting conditions. Brightness and contrast regulation is performed with the aid of information acquired by photosensors (2) and interpreted in a software program that can be specifically parameterised for the user, whereby the software regulates the output signal for screen (1) brightness and contrast.

Description

Bildschirme werden weltweit in privaten und gewerblichen Bereichen millionenfach eingesetzt; hauptsächlich in Fernsehgeräten und Computermonitoren. Die wiedergegebene Lichtstärke, d. h. die Helligkeit und der Kontrast eines Bildes, können beim heutigen Stand der Technik häufig manuell über eine Steuerung reguliert werden. Dies geschieht z. B. durch Potentiometer (regelbare Widerstände) oder durch eine elektronische Steuerung.Monitors are used millions of times worldwide in private and commercial areas; mainly in television sets and computer monitors. The reproduced light intensity, i.e. H. the brightness and contrast of an image can often be common with today's technology can be regulated manually via a controller. This happens e.g. B. by potentiometer (adjustable Resistors) or by electronic control.

Die im Patentanspruch 1 angegebene Erfindung bezweckt, die manuelle Steuerung der Lichtstärke von Bildschirmen zu ersetzen. Im Vordergrund steht hierbei die automatische Regelung von Helligkeit und Kontrast eines wiedergegebenen Bildes an die Lichtverhältnisse der Umgebung, die häufig zeitlichen Schwankungen unterliegen.The invention specified in claim 1 aims to manually control the light intensity of screens to replace. The focus here is on the automatic control of Brightness and contrast of a reproduced image to the lighting conditions of the environment are often subject to fluctuations in time.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß das Verfahren kontinuierlich die zur Betrachtung ideale Leuchtkraft eines Bildschirms regelt und so neben einer bestmöglichen Wiedergabequalität zu einer erheblichen Entlastung der Augen von Bildschirmbetrachtern beigetragen wird - ein bedeutender gesundheitlicher Aspekt. Ein weiterer Vorteil besteht darin, daß ein ständiges, manuelles Nachregeln entfällt.The advantages achieved with the invention are in particular that the method continuously adjusts the ideal brightness of a screen for viewing and so next to one best possible reproduction quality to a considerable relief of the eyes from Screen viewers is contributed - an important health aspect. Another The advantage is that there is no need for constant, manual readjustment.

Wie im Patentanspruch 1 beschrieben, kann die Erfindung technisch realisiert werden, indem die Lichtverhältnisse der Umgebung über einen Sensor gemessen werden, das gemessene Signal über eine Elektronik verarbeitet wird und eine elektrotechnische Abgleichroutine das Steuersignal an den Bildschirm verstärkt bzw. abschwächt.As described in claim 1, the invention can be implemented technically by the Ambient lighting conditions can be measured via a sensor, the measured signal via electronics are processed and an electrotechnical calibration routine sends the control signal to the Screen intensifies or weakens.

Eine vorteilhafte Ausgestaltung der Erfindung ist im Patentanspruch 2 gegeben. Anstatt einer einfachen Kombination von Photosensorik und Regelelektronik kann das Verfahren durch eine parametrisierbare Regelungssoftware noch differenzierter arbeiten und den individuellen Ansprüchen eines Betrachters gemäß kalibriert werden.An advantageous embodiment of the invention is given in claim 2. Instead of one The method can be combined by a simple combination of photosensors and control electronics parameterizable control software work even more differentiated and the individual Calibrate a viewer's claims.

Die im Patentanspruch 3a beschriebene externe Ausgestaltung des Verfahrens bietet die Möglichkeit, vorhandene Bildschirme mit dem Verfahren nachzurüsten. Die im Patentanspruch 3b beschriebene interne Ausgestaltung des Verfahrens bezieht sich in erster Linie auf neu entwickelte bzw. neu produzierte Bildschirme.The external embodiment of the method described in claim 3a offers the Possibility to retrofit existing screens with the procedure. The in claim 3b The internal design of the method described relates primarily to newly developed ones or newly produced screens.

Alle Patentansprüche der Erfindung beziehen sich auf Bildschirme im weitesten Sinne, d. h. als Bildschirm gelten alle bildwiedergebenden Medien, insbesondere Bildröhren (Elektronenstrahlröhren) mit Leuchtschirm und Flachbildschirme, wie sie in Fernsehgeräten oder Computermonitoren eingesetzt werden. Bezüglich dieses Patents sind auch digitale und analoge Bildprojektoren und Projektionswände als Bildschirme zu verstehen. Als für die Erfindung notwendige Photesonsorik gilt jede Art von Lichtstärkemeßeinrichtung, auch dem Stand der Technik entsprechende ein- oder mehrdimensionale Photodioden. All claims of the invention relate to screens in the broadest sense, i. H. as All image-reproducing media, in particular picture tubes, apply to the screen (Electron beam tubes) with fluorescent screen and flat screens, as they are in television sets or Computer monitors are used. Regarding this patent, there are also digital and analog ones To understand image projectors and projection screens as screens. As for the invention The necessary photo sensors apply to any type of light intensity measuring device, including the state of the art Technically appropriate one- or multi-dimensional photodiodes.  

AusführungsbeispielEmbodiment

Ein Ausführungsbeispiel der Erfindung ist in der beiliegenden Zeichnung dargestellt und wird im folgenden näher beschrieben:
Ein PC-Monitor (1) steht in einem Raum. Der Raum wird mit Tageslicht und Kunstlicht beleuchtet. Über den Tag ändern sich die Lichtverhältnisse im Raum durch unterschiedliche Sonneneinstrahlung bzw. an- und ausgeschaltene Lampen signifikant.An embodiment of the invention is shown in the accompanying drawing and is described in more detail below:
A PC monitor ( 1 ) is in a room. The room is illuminated with daylight and artificial light. During the day, the lighting conditions in the room change significantly due to different sunlight or lamps that are switched on and off.

Ein auf dem Monitor angebrachter Photosensor (2) registriert permanent die Lichtverhältnisse im Raum. Mit dem PC (3) wird über eine spezielle Regelungssoftware die gemessene Information verarbeitet, verglichen und das Ausgangssignal zum Monitor ggf. verstärkt oder abgeschwächt. Bei einer sich ändernden Raumbeleuchtung wird also die Leuchtkraft des Monitors kontinuierlich so reguliert, daß sie stets im idealen Verhältnis zur Umwelt steht.A photosensor ( 2 ) attached to the monitor permanently registers the lighting conditions in the room. With the PC ( 3 ), the measured information is processed and compared using special control software, and the output signal to the monitor is amplified or weakened if necessary. With changing room lighting, the luminosity of the monitor is continuously regulated so that it is always in an ideal relationship with the environment.

Claims (3)

1. Verfahren zur automatischen Regelung der Helligkeit und des Kontrasts von Bildschirmen aller Art, dadurch gekennzeichnet, daß die Leuchtkraft eines wiedergegebenen Bildes an die Lichtverhältnisse der Umgebung angepasst wird.1. A method for automatically regulating the brightness and contrast of screens of all kinds, characterized in that the luminosity of a reproduced image is adapted to the lighting conditions of the environment. 2. Das Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Helligkeits- und Kontrastregelung mit Hilfe von Information, die über eine Photosensorik aufgenommen und in einem Softwareprogramm, das auch nutzerspezifisch parametrisierbar ist, interpretiert wird, wobei die Software das Ausgangssignal für Helligkeit und Kontrast am Bildschirm regelt.2. The method according to claim 1, characterized in that the brightness and Contrast control with the help of information recorded and in via a photosensor a software program that can also be parameterized for specific users is interpreted, the software controls the output signal for brightness and contrast on the screen. 3. Das Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß es
  • a) als additive Komponente an eine bildschirmbasierende Technik extern zwischengeschaltet ist (externes Verfahren)
  • b) in eine bildschirmbasierende Technik integriert ist (internes Verfahren).
3. The method according to claims 1 and 2, characterized in that it
  • a) is externally interposed as an additive component to a screen-based technology (external method)
  • b) is integrated into a screen-based technology (internal process).
DE19908116A 1999-02-25 1999-02-25 Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program Withdrawn DE19908116A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19908116A DE19908116A1 (en) 1999-02-25 1999-02-25 Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19908116A DE19908116A1 (en) 1999-02-25 1999-02-25 Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program

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DE19908116A1 true DE19908116A1 (en) 2000-08-31

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DE19908116A Withdrawn DE19908116A1 (en) 1999-02-25 1999-02-25 Automatic regulation of brightness and contrast of all types of screen involves using information acquired by photosensors, interpreted in specifically parameterised software program

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037556A1 (en) * 2000-08-02 2002-02-21 Warema Renkhoff Gmbh & Co Kg Luminance sensor for control of screen displays, is fastenable to screen to detect brightness of different areas of screen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451849A (en) * 1982-06-23 1984-05-29 Rca Corporation Plural operating mode ambient light responsive television picture control
DE4217594A1 (en) * 1992-05-27 1993-12-02 Siemens Nixdorf Inf Syst Brightness and-or contrast control for VDU - has control matrix in front of screen control, with photosensitive sensor circuit for luminance value

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4451849A (en) * 1982-06-23 1984-05-29 Rca Corporation Plural operating mode ambient light responsive television picture control
DE4217594A1 (en) * 1992-05-27 1993-12-02 Siemens Nixdorf Inf Syst Brightness and-or contrast control for VDU - has control matrix in front of screen control, with photosensitive sensor circuit for luminance value

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10037556A1 (en) * 2000-08-02 2002-02-21 Warema Renkhoff Gmbh & Co Kg Luminance sensor for control of screen displays, is fastenable to screen to detect brightness of different areas of screen

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OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8122 Nonbinding interest in granting licences declared
8139 Disposal/non-payment of the annual fee