Digital cameras with automatically retracting lens and automatically retracting method thereof

Abstract

The invention relates to a digital camera capable of automatically retracting lens and a method of automatically retracting the lens, comprising the following steps: a lens unit is extended out a lens when a switch unit is turned on; a control unit demands a sensing unit pick up a first image and convert the first image into a first image characteristic value for temporary storage; a timing unit starts timing and sends a detecting signal to the control unit when a preset interval is reached; the control unit demands the sensing unit pick up a second image and convert the second image into a second image characteristic value; the second image characteristic value and the first image characteristic value are compared to confirm whether preset difference is achieved, and if the preset difference achieved, the lens unit is enabled to retract the lens and the switch unit is turned off. The invention can solve the problem that the lens of the prior digital camera can not be well protected after the camera is turned on and the lens extends out, thereby having the function of reducing lens damages caused by the falling off or shaking of the camera.

Description

technical field [0001] The invention relates to a digital camera and its lens automatic retracting method, in particular to a digital camera and its lens automatic retracting method which can determine whether the lens needs to be automatically retracted by comparing the feature values ​​of the front and rear images. Background technique [0002] With the trend of fashion, almost all non-professional digital cameras have become thinner and smaller in size, and their appearance designs are more and more beautiful. The common feature of these digital cameras is that they allow users to use the simplest These digital cameras are also called point-and-shoot cameras. [0003] In order to simplify the operation, almost all such non-professional digital cameras will be equipped with a lens that can be automatically extended / retracted. Fortunately, when the user presses the switch to turn on the digital camera, the lens can be automatically extended to allow the user to take picture...

AI Technical Summary

Problems solved by technology

However, when the digital camera is turned on, the lens usually keeps sticking out of the digital camera body and presents an exposed state, although some digital cameras provide the so-called automatic standby function to facilitate the user not to take pictures for a period of time after turning on the camera The lens can be automatically retracted and the digital camera is turned off when the digital camera is turned on, but before the automatic standby time is reached after the digital camera is turned on, the lens exposed to the digital camera is still at a high risk of being easily damaged

[0004] This high risk comes from the user's improper grip on the digital camera, which causes the digital camera to drop or shake. These situations will cause the lens of the digital camera to hit or rub against the ground or other hard objects. resulting in damage that renders it unusable or that affects the quality of the captured image

In fact, the lens of a digital camera is like the human eye. If there is any damage, the entire digital camera will almost be in an unusable state. Therefore, the lens is often the most expensive part in a digital camera.

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