Abstract: A method for performing display control is provided, where the method is applied to an electronic device. The method includes: receiving image data of images of a user, wherein the images are captured by a camera module; and detecting eye activities of the user by analyzing the image data of the images, in order to determine whether to perform at least one scrolling operation. In particular, the step of detecting the eye activities of the user by analyzing the image data of the images in order to determine whether to perform the at least one scrolling operation further includes: when a specific eye activity is detected, performing a specific scrolling operation associated to the specific eye activity. An associated apparatus is also provided.

Abstract: A reciprocating pencil sharpener has a stationary member, a cutter and a ratchet mechanism. The cutter includes a blade secured to a blade holder. The ratchet mechanism is mounted between the stationary member and the cutter and allows the cutter to rotate relative to the stationary member in one direction only. When a user desires to sharpen a pencil, the user can keep the pencil in the hand and rotate the pencil in reciprocating rotation, thus obtaining the sharpened point of the pencil. Consequently, it is convenient for the user to apply a rotational force and a high efficiency of sharpening operation is achieved.

Abstract: This invention relates to a vacuum-pump sucker for high-resolution microscopy comprising a sucker body and a transparent plate. The vacuum-pump sucker is designed as a stabilizer for sample stabilization in a clinical optical virtual biopsy system with sub-micron resolution. The sucker is connected with a vacuum pump. As the vacuum pump pumps out air or gas, tissues around the imaged area will be sucked by the sucker and the distance between objective lens and the imaged tissue can be stabilized. In this way, the stability and resolution of the clinical biopsy system can be greatly improved.