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Method and device to extend camera battery life

A camera and equipment technology, applied in the camera field, can solve the problem of consuming camera battery power and so on

Inactive Publication Date: 2012-02-01
NOKIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Displaying scene images will consume power from the camera battery

Method used

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  • Method and device to extend camera battery life
  • Method and device to extend camera battery life
  • Method and device to extend camera battery life

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Embodiment Construction

[0044] Digital cameras consume battery power as long as they are plugged in. For example, displaying an image on the viewfinder requires battery power. It is desirable to reduce the power consumption of the battery by controlling the display of images on the viewfinder.

[0045] Some camera systems have timers to set the camera into a low power phase in order to conserve battery power. In order to return to normal operation from this stage, the user either needs to activate the camera again, or needs to press a button. This return process delays the momentum of the shot, as users typically want to capture an image as soon as they pick up the camera.

[0046] The present invention provides a method for reducing battery power consumption in a camera in which shooting can be performed without input from a user and without delay. According to various embodiments of the present invention, the camera viewfinder is automatically and adaptively controlled in order to conserve batte...

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Abstract

The battery power consumption in a camera is adjustable based on the level of camera activity determined from formation on scene changes. Information can be gathered from statistical data on auto-white balance, auto-exposure and auto-focusing calculations, or from scene movement and camera movement. When the activity level is low, the viewfinder frame rate can be reduced, the accuracy of analog-to-digital conversion in the camera can be reduced, and the entire camera operation can be slowed down.

Description

technical field [0001] This invention relates generally to cameras, and more particularly to cameras having an image display that acts as a viewfinder. Background technique [0002] Digital cameras typically have an image display that acts as a viewfinder to allow a user to view an image of a scene before capturing it. Displaying scene images will consume power from the camera battery. It would be beneficial to provide a method for controlling the display of images on a viewfinder in order to reduce battery power consumption and thus extend camera battery life. Contents of the invention [0003] The present invention provides a method and apparatus for reducing battery power consumption in a camera using a number of power saving features. The device uses, for example, information about scene movement to detect the activity level of the camera and use the activity level as a basis for reducing power consumption when the camera viewfinder is active. Scene movement may be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F1/32G03B7/26H04N5/232G03B17/00G03B17/02G03B17/18
CPCH04N5/23241H04N5/232H04N23/651H04N23/63H04N23/60
Inventor M·穆科宁
Owner NOKIA CORP