ATE357040T1 - Verfahren zur automatischen hintergrundlichteinstellung - Google Patents

Verfahren zur automatischen hintergrundlichteinstellung

Info

Publication number
ATE357040T1
ATE357040T1 AT04254722T AT04254722T ATE357040T1 AT E357040 T1 ATE357040 T1 AT E357040T1 AT 04254722 T AT04254722 T AT 04254722T AT 04254722 T AT04254722 T AT 04254722T AT E357040 T1 ATE357040 T1 AT E357040T1
Authority
AT
Austria
Prior art keywords
camera
ambient light
level
backlight
light level
Prior art date
Application number
AT04254722T
Other languages
English (en)
Inventor
Robert J Lowles
Original Assignee
Research In Motion Ltd
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 Research In Motion Ltd filed Critical Research In Motion Ltd
Application granted granted Critical
Publication of ATE357040T1 publication Critical patent/ATE357040T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/66—Transforming electric information into light information
    • 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
    • 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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0606—Manual adjustment
    • 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
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0653—Controlling or limiting the speed of brightness adjustment of the 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
    • 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)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Studio Devices (AREA)
AT04254722T 2003-08-05 2004-08-05 Verfahren zur automatischen hintergrundlichteinstellung ATE357040T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0318355A GB2404773B (en) 2003-08-05 2003-08-05 Method for automatic backlight adjustment

Publications (1)

Publication Number Publication Date
ATE357040T1 true ATE357040T1 (de) 2007-04-15

Family

ID=27839680

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04254722T ATE357040T1 (de) 2003-08-05 2004-08-05 Verfahren zur automatischen hintergrundlichteinstellung

Country Status (7)

Country Link
US (1) US20050041139A1 (de)
EP (2) EP1783740A1 (de)
AT (1) ATE357040T1 (de)
CA (1) CA2476645A1 (de)
DE (1) DE602004005275T2 (de)
GB (1) GB2404773B (de)
HK (1) HK1075734A1 (de)

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Also Published As

Publication number Publication date
GB2404773B (en) 2005-06-08
HK1075734A1 (en) 2005-12-23
DE602004005275T2 (de) 2007-12-20
US20050041139A1 (en) 2005-02-24
CA2476645A1 (en) 2005-02-05
EP1505567B1 (de) 2007-03-14
GB2404773A (en) 2005-02-09
DE602004005275D1 (de) 2007-04-26
GB0318355D0 (en) 2003-09-10
EP1505567A1 (de) 2005-02-09
EP1783740A1 (de) 2007-05-09

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties