Abstract: A fan is provided herein, including a housing, a hub, and a plurality of blades. The housing includes a top case and a bottom case. The hub is rotatably disposed between the top case and the bottom case in an axial direction. The blades extend from the hub in a radial direction, located between the top case and the bottom case. Each of the blades has a proximal end and a distal end. The proximal end is connected to the hub. The distal end is opposite from the proximal end, located at the other side of the blade, having at least one recessed portion. Each of the recessed portions form a passage for air.

Abstract: A portable electronic device including a first body, a second body, a pivot element, a heat source, a first flexible heat conductive element, and a flip cover is provided. The pivot element is connected to the second body, and the second body is pivotally connected to the first body through the pivot element. The heat source is disposed in the first body. The first flexible heat conductive element is thermally coupled to the heat source and extends toward the pivot element from the heat source. The first flexible heat conductive element passes through the pivot element and extends into the inside of the second body and is thus thermally coupled to the second body. The flip cover is pivotally connected to the first body and located on a moving path of the pivot element.

Abstract: A centrifugal heat dissipation fan including a housing and an impeller disposed in the housing on an axis is provided. The housing has at least one inlet on the axis and has a plurality of outlets in different radial directions. A heat dissipation system of an electronic device is also provided.

Abstract: A semiconductor integrated circuit device includes a chip main circuit, a damper and a passive component. The chip main circuit is coupled to a power source and performs a predetermined function. The damper is coupled to an output terminal of the chip main circuit. The passive component is coupled to the chip main circuit via the damper.

Abstract: A semiconductor integrated circuit device includes a chip main circuit, a damper and a passive component. The chip main circuit is coupled to a power source and performs a predetermined function. The damper is coupled to an output terminal of the chip main circuit. The passive component is coupled to the chip main circuit via the damper.

Abstract: A robotic arm control system is provided. In, the robotic arm control system, any three points A, B, and C of an object to be determined are picked, thereby creating an original coordinate system. A robotic arm is directed to rotate around the x-axis of the original coordinate system to reach the points B and C. During the rotation of the robotic arm, the three points A, B, and C are recorded by a visual process. A non-linear mapping relation of the original coordinate system and the operation coordinate system is calculated according to length ratios, an angular ratio, and a differential ratio of the difference of the length ratios to the angle between the line A-B and the line A-C, thereby controlling the movement of the robotic arm according to the non-linear mapping relation. The disclosure further provides a robotic arm control method.

Abstract: A robot arm includes a support arm, an adjusting rod and a detecting unit. The adjusting rod rotatably extends through the support arm. The detecting unit is attached to the adjusting rod. The detecting unit includes an image capture device and a probe device. The image capture device captures images of a workpiece. The probe device includes a driving device and a probe. The driving device may drive the probe to move between a first position where the probe does not visually prevent images of the workpiece being captured by the image capture device, and a second position where the probe does block the images of the workpiece being captured by the image capture device.

Abstract: An exemplary port reducing method is for removing unselected ports of an original S-parameter file and generating an optimized S-parameter file. The method controls a display unit to display a user interface to receive commands from a user in response to user operation; the commands comprise a calling command, a selecting command, and an executing command. The method obtains the original S-parameter file in response to the calling command. Next, the method determines which of the ports of the original S-parameter file are unselected in response to the selecting command, and connects each unselected port to the ground through one terminal impedance. The method then generates an optimized S-parameter file that comprises only the selected ports in response to the executing command.

Abstract: A printed circuit board (PCB) includes a power layer and a signal layer. A signal line is arranged on the signal layer. A power via extends through the power layer and the signal layer, and is electrically connected to the power layer and the signal layer. A number of through holes is defined in the PCB, through the power layer and the signal layer, and arranged between the signal line and the power via. The through holes are insulated from the power via. The inside wall of the power via is made of conductive material.

Abstract: A method of generating electrical rule file for circuit board by using an electronic device. The electronic device acquires a component file, a wiring file, a wiring group file, a first electrical rule file, and a second electrical rule file from a storage device. The electronic device integrates the component file and the wiring file to be an integrated file according to wire names, acquires group names and inserts the group names into the integrated file according to the wire names, acquires first electrical rules and inserts the first electrical rules into the integrated file according to the group names, acquires second electrical rules and inserts the second electrical rules into the integrated file according to the group names, to complete the integrated file, and saves the completed file to the storage device.

Abstract: An electronic device and method of automatically testing the transmission lines of a PCB. Design requirements of transmission lines are predetermined and a wiring diagram is acquired according to a designated wiring diagram storage path. Some basic parameters of each transmission line of the diagram are applied in excluding one or more transmission lines which may not meet the design requirements, then, the excluded transmission lines are marked and/or highlighted. A report of the transmission lines is generated using a report template.

Abstract: An exemplary port reducing method is for removing unselected ports of an original S-parameter file and generating an optimized S-parameter file. The method controls a display unit to display a user interface to receive commands from a user in response to user operation; the commands comprise a calling command, a selecting command, and an executing command. The method obtains the original S-parameter file in response to the calling command Next, the method determines which of the ports of the original S-parameter file are unselected in response to the selecting command, and connects each unselected port to the ground through one terminal impedance. The method then generates an optimized S-parameter file that comprises only the selected ports in response to the executing command.

Abstract: In a method for controlling motion of a mechanical arm, the method moves the mechanical arm horizontally or vertically so that an image capturing device of the mechanism arm focuses on an object. The contours of the object are analyzed, and a central area of the object is established. By making the center of the image area of the image capturing device coincide with the center area of the object at least twice, the method records two positions of the mechanical arm, and calculates a total apparent displacement value of the object and a distance between the object and camera lens of the image capturing device according to the first position, the second position of the mechanical arm and the total apparent displacement value of the object. The method ensures accurate positioning of the mechanical arm.

Abstract: A robotic arm control system is provided. In, the robotic arm control system, any three points A, B, and C of an object to be determined are picked, thereby creating an original coordinate system. A robotic arm is directed to rotate around the x-axis of the original coordinate system to reach the points B and C. During the rotation of the robotic arm, the three points A, B, and C are recorded by a visual process. A non-linear mapping relation of the original coordinate system and the operation coordinate system is calculated according to length ratios, an angular ratio, and a differential ratio of the difference of the length ratios to the angle between the line A-B and the line A-C, thereby controlling the movement of the robotic arm according to the non-linear mapping relation. The disclosure further provides a robotic arm control method.

Abstract: In a method for analyzing integrality of serial attached SCSI (SAS) signals using a computing device, the computing device connects to a signal measuring device and an electronic device. A group of test parameters, an intensity grade of a SAS signal, and a total number are set for evaluating integrality of the SAS signal. The intensity grade of the SAS signal is adjusted through an SAS interface of the electronic device. The signal measuring device measures test parameters of the SAS signal, and a test number is recorded when the test parameters of the SAS are measured. The method analyzes the integrality of the SAS signal to find an optimal SAS signal when the test number equals the total number, and determines an intensity grade of the optimal SAS signal as a driving parameter of the SAS interface.

Abstract: In a method for regulating a mechanical arm using a control computer. The method obtains a first position and a second position of a center of an image plane of an image capturing device on the mechanical arm by controlling movements of the mechanical arm, and calculates a movement vector from the first position to the second position. The method further calculates a regulating angle according to the movement vector and an axial vector of the mechanical arm, and moves the mechanical arm according to the regulating angle such that the axial vector is perpendicular to a measurement plane determined by the first object and the second object.

Abstract: A robot arm includes a support arm, an adjusting rod and a detecting unit. The adjusting rod rotatably extends through the support arm. The detecting unit is attached to the adjusting rod. The detecting unit includes an image capture device and a probe device. The image capture device captures images of a workpiece. The probe device includes a driving device and a probe. The driving device may drive the probe to move between a first position where the probe does not visually prevent images of the workpiece being captured by the image capture device, and a second position where the probe does block the images of the workpiece being captured by the image capture device.

Abstract: A method of automatically testing a mobile communication terminal selects a communication frequency band for testing the mobile communication terminal. The mobile communication terminal switches to the selected communication frequency band. One or more service modes, of the mobile communication terminal, which need to be tested under the selected communication frequency band are selected, and a test sequence of the one or more service modes is set. The mobile communication terminal using one of the service modes. Test data of the mobile communication terminal is obtained according to a preset use duration, a test frequency and the test interval of each service mode. A report is generated using the test data.

Abstract: An electronic device and method of automatically testing the transmission lines of a PCB. Design requirements of transmission lines are predetermined and a wiring diagram is acquired according to a designated wiring diagram storage path. Some basic parameters of each transmission line of the diagram are applied in excluding one or more transmission lines which may not meet the design requirements, then, the excluded transmission lines are marked and/or highlighted. A report of the transmission lines is generated using a report template.

Abstract: A method of automatically testing a mobile communication terminal selects a communication frequency band for testing the mobile communication terminal. The mobile communication terminal switches to the selected communication frequency band. One or more service modes, of the mobile communication terminal, which need to be tested under the selected communication frequency band are selected, and a test sequence of the one or more service modes is set. The mobile communication terminal using one of the service modes. Test data of the mobile communication terminal is obtained according to a preset use duration, a test frequency and the test interval of each service mode. A report is generated using the test data.