Abstract: A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a spindle with a non-circular cross-section and the relative movement resulting from the movable components disposed on the spindle, such that one of the body portions of the portable electrical device automatically tilts in an angle after the body portions slides with each other. The user could further adjust the angle to meet various use conditions.

Abstract: A portable electronic device and an operation method therefor are provided. The portable electronic device comprises a first body portion, a second body portion, a sliding module and a rotating module. After the second body portion is slid along the surface of the first portion by the sliding module, the rotating module is promptly triggered to automatically rotate the second body portion to a first angle with respect to the first body portion. The second body portion can be further rotated to a second angle when the second body portion bears a thrust force at the first angle. The portable electronic device can operate in corresponding operation modes according to the angles that the second body portion presents with respect to the first body portion.

Abstract: A multi-staged hinge assembly and a portable electrical device comprising the multi-staged hinge assembly are provided. The multi-staged hinge assembly utilizes a non-circular spindle to associate with a plurality of movable elements disposed thereon. One of the body portions of the portable electrical device automatically tilts at an angle after the body portion slides by the multi-staged hinge assembly. The user could further adjust the angle to meet the demands of various situations.

Abstract: A handheld electronic device including a body, a cover, an engaging assembly, and a releasing member is provided. The cover is disposed on the body and has a hole. The engaging assembly is movably disposed between the body and the cover to engage the cover on the body. The releasing member is disposed on the body and exposed by the hole of the cover. The releasing member is suitable for leaning against the engaging assembly and driving the same from an engaging position to a releasing position so as to release the cover.

Abstract: A handheld electronic device comprising a main body, a stylus and a non-contact sensor is provided. The main body has a containing slot, and the stylus having a sensing region is suitable for being inserted into the containing slot. The non-contact sensor is disposed beside the containing slot. The non-contact sensor outputs a sensing signal for identifying the position of the stylus when the stylus moves in the containing slot and the sensing region of the stylus passes the non-contact sensor. By detecting the position of the stylus in a non-contact manner, the reliability and the lifetime of the handheld electronic device are improved, and a higher sensing precision is also provided.

Abstract: A handheld electronic device including a body, a cover, an engaging assembly, and a releasing member is provided. The cover is disposed on the body and has a hole. The engaging assembly is movably disposed between the body and the cover to engage the cover on the body. The releasing member is disposed on the body and exposed by the hole of the cover. The releasing member is suitable for leaning against the engaging assembly and driving the same from an engaging position to a releasing position so as to release the cover.

Abstract: A portable electronic apparatus includes a first module, a second module, and a first hinge assembly. The first hinge assembly is connected to the first module and the second module. The first hinge assembly includes a first hinge, a second hinge and a first swing member. The first hinge is installed inside the first module and pivotally connected to the first module, and the second hinge is pivotally connected to the second module. The first swing member connected to the first hinge and the second hinge. When the first module and the second module are close, the first module and the second module cover the first hinge assembly together.