Abstract: A zoom button structure including a zoom button, a first middle band and a second middle band is provided. The first middle band has a first lock portion and a first body portion. The first lock portion extends from the first body portion and is located at a side of the zoom button. The second middle band has a second lock portion and a second body portion. The second lock portion extends from the second body portion and is located at the other side of the zoom button. Herein, the first lock portion and the second lock portion lock together and form an annular accommodating space. And the annular accommodating space surrounds and accommodates the zoom button.

Abstract: An automatic photographing method with face recognition is applied in a camera having a detecting lens and a photographing lens for a user to photograph a target. First, detect a face of the user through the detecting lens, and obtain a plurality of face images of the detected face. Then, capture an image variance of the obtained face images, and photograph the target through a photographing lens when the captured image variance exceeds a photographing starting value. Therefore, during the whole photographing process, photographing can be achieved through determining variations of the face images of the user without pressing the shutter key of the camera, thereby completely preventing handshakes resulted from the pressing action, and thus improving the photographing quality.

Abstract: A zoom button structure including a zoom button, a first middle band and a second middle band is provided. The first middle band has a first lock portion and a first body portion. The first lock portion extends from the first body portion and is located at a side of the zoom button. The second middle band has a second lock portion and a second body portion. The second lock portion extends from the second body portion and is located at the other side of the zoom button. Herein, the first lock portion and the second lock portion lock together and form an annular accommodating space. And the annular accommodating space surrounds and accommodates the zoom button.

Abstract: A portable electronic device and a battery locking module capable to lock the battery and the battery slot cover in the housing of the portable electronic device through a locking element and an elastic element are provided. Especially, through the improvement design of the arrangement of the battery locking module in the housing, not only the inner space of the portable electronic device can be saved, a fool proof function is also provided since the battery slot cover is disabled to cover the opening of the battery slot if the battery is in a wrong position.

Abstract: An automatic photographing method with face recognition is applied in a camera having a detecting lens and a photographing lens for a user to photograph a target. First, detect a face of the user through the detecting lens, and obtain a plurality of face images of the detected face. Then, capture an image variance of the obtained face images, and photograph the target through a photographing lens when the captured image variance exceeds a photographing starting value. Therefore, during the whole photographing process, photographing can be achieved through determining variations of the face images of the user without pressing the shutter key of the camera, thereby completely preventing handshakes resulted from the pressing action, and thus improving the photographing quality.