Abstract: An adjustment device includes a base, a ratchet wheel assembly and a fixing rod. The base includes an accommodating groove and ratchet teeth. The ratchet wheel assembly is rotatably accommodated in the accommodating groove and includes a body, an elastic arm, and a pawl. The elastic arm includes a first connecting segment connected to the body and a second connecting segment connected to the pawl. The pawl may engage with one of the ratchet teeth. The fixing rod movably extends between the body and the elastic arm. When the fixing rod is arranged between the second connecting segment and the body, the pawl is fixed to the ratchet teeth, so that the ratchet wheel assembly is positioned on the base. When the fixing rod is arranged between the first connecting segment and the body, the ratchet wheel assembly may rotate relative to the base.

Abstract: An adjustment device includes a base, a ratchet wheel assembly and a fixing rod. The base includes an accommodating groove and ratchet teeth. The ratchet wheel assembly is rotatably accommodated in the accommodating groove and includes a body, an elastic arm, and a pawl. The elastic arm includes a first connecting segment connected to the body and a second connecting segment connected to the pawl. The pawl may engage with one of the ratchet teeth. The fixing rod movably extends between the body and the elastic arm. When the fixing rod is arranged between the second connecting segment and the body, the pawl is fixed to the ratchet teeth, so that the ratchet wheel assembly is positioned on the base. When the fixing rod is arranged between the first connecting segment and the body, the ratchet wheel assembly may rotate relative to the base.

Abstract: An object detection system including a storage unit, image acquisition module, feature searching module, calculation module, and confirmation module is provided. The image acquisition module obtains a first, second, and third image respectively corresponding to a first, second, and third timepoint of a video sequence from the storage unit, where time difference between the first and second timepoint is less than or equal to that between the second and third timepoint. The feature searching module searches for at least one feature from the first image. When the feature is within a near-distance detected region, the calculation module calculates a motion vector of the feature according to the first and second image; otherwise, it calculates the motion vector of the feature according to the third and one of the first and second image. The confirmation module confirms the existence of a moving object according to the motion vector of the feature.

Abstract: An object detection system including a storage unit, image acquisition module, feature searching module, calculation module, and confirmation module is provided. The image acquisition module obtains a first, second, and third image respectively corresponding to a first, second, and third timepoint of a video sequence from the storage unit, where time difference between the first and second timepoint is less than or equal to that between the second and third timepoint. The feature searching module searches for at least one feature from the first image. When the feature is within a near-distance detected region, the calculation module calculates a motion vector of the feature according to the first and second image; otherwise, it calculates the motion vector of the feature according to the third and one of the first and second image. The confirmation module confirms the existence of a moving object according to the motion vector of the feature.

Abstract: An image calibration system and an image calibration method thereof. The image calibration system includes an image capture module capturing a calibration image, first and second calibration tools comprising first and second calibration graphs respectively and a processing module calculating first and second calibration templates in the calibration image based on the first and second calibration graphs, and comparing the calibration image and the first and second calibration templates so as to obtain at least one locating point.

Abstract: This invention discloses a portable computer capable of performing a digital photo frame function under a main-power-off state. The portable computer includes a base, a display device, an image capturing device, an image capturing switch, and a processor. The display device includes a frame pivotally connected to the base. The image capturing device and the image capturing switch are disposed at the frame. The image capturing switch is operated to output a first request signal to the processor. In response to the first request signal, the processor drive the image capturing device to capture a first image under the main-power-off state, and the processor instantly displays the first image on the display device under the main-power-off state.

Abstract: This invention discloses a portable computer capable of performing a digital photo frame function under a main-power-off state. The portable computer includes a base, a display device, an image capturing device, an image capturing switch, and a processor. The display device includes a frame pivotally connected to the base. The image capturing device and the image capturing switch are disposed at the frame. The image capturing switch is operated to output a first request signal to the processor. In response to the first request signal, the processor drive the image capturing device to capture a first image under the main-power-off state, and the processor instantly displays the first image on the display device under the main-power-off state.

Abstract: A portable electronic device includes a main body and a dummy adapter. The main body includes an adapter slot. The dummy adapter is detachably disposed in the adapter slot, and it includes an accommodating space for accommodating an information medium.

Abstract: An OTG type storage device and a notebook computer using the same are provided. The OTG type storage device includes a hard disk, a first controlling module, a battery and at least one hard disk connector. The first controlling module is electronically connected with the hard disk for driving the hard disk. The battery is electronically connected with the hard disk and the first controlling module for providing a working power to the hard disk and the first controlling module. The hard disk connector is used for connecting with a computer system.

Abstract: A thermal module includes a base, a plurality of fins installed on the base, and a vibrational device installed on the base for vibrating the plurality of fins so as to remove dust from the plurality of fins. An electronic device includes a housing, and a thermal module installed inside the housing. The thermal module includes a base, a plurality of fins installed on the base, and a vibrational device installed on the base for vibrating the plurality of fins so as to remove dust from the plurality of fins.

Abstract: An electronic device is disclosed, comprising: a transparent body including an outer surface and an inner surface on opposite sides; a transparent film deposed on the outer surface of the transparent body; an opaque film deposed on the inner surface of the transparent body, wherein a pattern structure is formed in the opaque film, and the pattern structure exposes a portion of the inner surface of the transparent body; and a light source corresponding to a location of the pattern structure.

Abstract: An external expansion apparatus for a portable computer is provided. The expansion apparatus is detachably connected via a cable to the portable computer for providing functional expansion for the portable computer when connected to the portable computer. The expansion apparatus includes a box body having a plurality of accommodating rooms. Each of the plurality of the rooms is for accommodating one of detachable expansion units of different types. The expansion apparatus also includes a communication control circuit for controlling the communication between the portable computer. In particular, because each of the plurality of expansion units is formed a module, the expansion apparatus can provides users with multiple choices and a great degree of convenience for the functional expansion of the portable computer. In the invention, one of the inserted expansion units can be a data storage device, or a modem, or an optical-disk drive device, etc.