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Digital camera capable of brightness and contrast control

A digital camera, contrast technology, applied in the field of digital cameras, can solve the problem of LCD screen power consumption and other problems

Inactive Publication Date: 2005-10-12
O2 MICRO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time the LCD screen consumes about 15% of the total energy consumption
Traditional digital cameras do not have a mechanical device to reduce energy consumption by adjusting the power of the LCD screen according to the ambient brightness

Method used

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  • Digital camera capable of brightness and contrast control
  • Digital camera capable of brightness and contrast control
  • Digital camera capable of brightness and contrast control

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Embodiment Construction

[0009] figure 1 One system embodiment 100 of the present invention is shown. System 100 generally includes a digital camera 114 . Digital camera 114 may include a still image camera or a digital video camera. As shown in this embodiment, the digital camera 114 includes a power button 102 , an operating mode selection button 104 , a user interface control button 106 , an optical viewfinder 108 and an LCD screen 110 . In this embodiment, the digital camera 114 also includes an ambient brightness sensor 112 . The ambient brightness sensor can be placed anywhere in the digital camera. In this embodiment, the ambient brightness sensor 112 is placed near the LCD screen 110 . Ambient brightness sensor 112 is capable of generating a signal indicative of ambient brightness conditions. Circuitry within the digital camera uses this signal to adjust the brightness of the LCD screen 110, as described in more detail below.

[0010] At the outset, it should be appreciated that the essen...

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PUM

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Abstract

A method comprises a step for generating a signal indicative of ambient light around an LCD panel provided in a digital camera. Furthermore, the method comprises a step for controlling at least either LCD panel brightness or its contrast based on at least a part of the signal indicative of ambient light around the LCD panel. Various modifications, variations and alternatives should be possible within the scope of the present embodiment.

Description

technical field [0001] The invention relates to a digital camera capable of brightness and contrast control. Background technique [0002] Handheld consumer devices are mostly battery powered. The energy consumption of its system will affect the battery life. In DSC, power consumption will limit the number of pictures taken by the camera; this is also one of the important parameters to consider when designing a digital camera. There are many power management techniques used to reduce the overall power consumption of digital cameras. For example, increasing the efficiency of a DC / DC converter or shutting down a circuit when it is not needed. When a digital camera is turned on, its LCD screen is always on as well. For example, the LCD screen acts as a viewfinder when the user takes a picture. Similarly, LCD screens are also needed when users browse photos taken by digital cameras. But at the same time the LCD screen consumes about 15% of the total energy consumption. Co...

Claims

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Application Information

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IPC IPC(8): G02F1/133G09G3/20G09G3/36H04N5/222H04N5/225H04N5/232H04N5/235H04N101/00
CPCG09G2320/0606G09G2320/0626G09G2330/021H04N2101/00H04N5/23293G09G2320/066G09G2360/144G09G3/36H04N23/651H04N23/63H04N23/70
Inventor 杜珣弤法拉·坡贝斯库-斯塔内斯缇
Owner O2 MICRO INC