Abstract: Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.

Abstract: A method for determining a standard depth value of a marker includes obtaining a maximum depth value of the marker. A reference depth value of the marker is obtained based on a depth image of the marker, and a Z-axis coordinate value of the marker is obtained based on a color image of the marker. When the reference depth value and the Z-axis coordinate value are both less than the maximum depth value, and a difference between the reference depth value and the Z-axis coordinate value is not greater than 0, the depth reference value is set as the standard depth value of the marker; and when the difference is greater than 0, the Z-axis coordinate value is set as the standard depth value of the marker.

Abstract: A detection system and method for the migrating cell is provided. The system is configured to detect a migrating cell combined with an immunomagnetic bead. The system includes a platform, a microchannel, a magnetic field source, a coherent light source and an optical sensing module. The microchannel is configured to allow the migrating cell to flow in it along a flow direction. The magnetic field source is configured to provide magnetic force to the migrating cell combined with the immunomagnetic bead. The magnetic force includes at least one magnetic force component and the magnetic force component is opposite to the flow direction of the microchannel. The coherent light source is configured to provide the microchannel with the coherent light. The optical sensing module is configured to receive the interference light caused by the coherent light being reflected by the sample inside the microchannel.

Abstract: A switching power converter includes: a power stage circuit, including at least one transistor which is configured to operably switch an inductor to convert an input power to an output power; and an active EMI filter circuit, including at least one amplifier, wherein the at least one amplifier is configured to operably sense a noise input signal which is related to a switching noise caused by the switching of the power stage circuit, and amplify the noise input signal to generate a noise canceling signal, wherein the noise canceling signal is injected into an input node of the switching power converter, so as to suppress the switching noise and thus reducing EMI, wherein the input power is provided through the input node to the power stage circuit.

Abstract: A method for capturing a tool path, applicable to a machine tool having a controller and furnished with a tooling, includes the steps of: obtaining a data update frequency of the controller; calculating a feed rate of the controller, determining whether or not the feed rate is obtained, going to next step if positive, and going to the previous step if negative; reading G-codes of the controller to confirm the feed rate; and, based on the confirmed feed rate, recording machine coordinates transmitted from the controller for synthesizing a tool path file. The tool path file is used for simulation and analysis of machining of the machine tool. In addition, a device for capturing the tool path is also provided.

Abstract: A method for capturing a tool path, applicable to a machine tool having a controller and furnished with a tooling, includes the steps of: obtaining a data update frequency of the controller; calculating a feed rate of the controller, determining whether or not the feed rate is obtained, going to next step if positive, and going to the previous step if negative; reading G-codes of the controller to confirm the feed rate; and, based on the confirmed feed rate, recording machine coordinates transmitted from the controller for synthesizing a tool path file. The tool path file is used for simulation and analysis of machining of the machine tool. In addition, a device for capturing the tool path is also provided.

Abstract: In some embodiments, a robot comprises a movable base and a torso arranged on the base. The torso comprises a first portion mounted to the base; a second portion installed to the first portion, wherein the second portion could be moved relative to the first portion; and a support substantially connected to the second portion.

Abstract: The present disclosure relates to a robot, comprising: a movable base; and a torso arranged on the base. The torso comprises a first portion mounted to the base; a second portion installed to the first portion, wherein the second portion could be moved relative to the first portion; and a support substantially connected to the second portion.

Abstract: A graphite cast iron nitrided piston ring has a main body including matrix and a nitrided layer. The matrix is made of graphite cast iron, and the nitrided layer is formed by subjecting a surface of the matrix to contact a cylinder to a gas nitriding process. With the nitrided layer formed at the surface of the matrix made of graphite cast iron, the piston ring has sufficient hardness and good abrasion resistance.

Abstract: A graphite cast iron nitrided piston ring has a main body including matrix and a nitrided layer. The matrix is made of graphite cast iron, and the nitrided layer is formed by subjecting a surface of the matrix to contact a cylinder to a gas nitriding process. With the nitrided layer formed at the surface of the matrix made of graphite cast iron, the piston ring has sufficient hardness and good abrasion resistance.

Abstract: A desulfurization composition includes calcium oxide, silicon dioxide and aluminum oxide. The desulfurization composition is free of an alkali metal oxide. Aluminum oxide is present in an amount ranging from 20 to 26 wt % based on the total weight of the desulfurization composition, and the weight ratio of calcium oxide to aluminum oxide is within a range of 2.19 to 3. A method for desulfurizing molten steel using the desulfurization composition is also disclosed.

Abstract: A method for switching a touch keyboard and a handheld electronic device and a storage medium using the method are provided. The method is suitable for a handheld electronic device having a touch screen. In the method, a character input function is first activated to display a first type touch keyboard on a side of the touch screen. A touch signal produced within a display area of the first type touch keyboard is then received and it is determined whether the touch signal moves to another side of the touch screen. If the touch signal is determined to move to the another side of the touch screen, a second type touch keyboard is displayed on the another side of the touch screen. Accordingly, the users can switch the touch keyboard to another one conveniently so as to input characters.

Abstract: A roller module is adapted for use with an automatic document feeder, and is adapted for feeding of a document sheet therethrough. The roller module comprises a first roller, a second roller disposed adjacent to and parallel to the first roller and cooperating with the first roller to define a nip, a driven component co-rotatable with the first roller, and a driving component rotatable for abutting against and driving the driven component to rotate, thereby permitting feeding of the document sheet through the nip. During rotation of the driving component, the document sheet is brought into contact with the first and second rollers for a predetermined time period to perform skew correction before the driving component rotates the driven component.

Abstract: A roller module is adapted for use with an automatic document feeder, and is adapted for feeding of a document sheet therethrough. The roller module comprises a first roller, a second roller disposed adjacent to and parallel to the first roller and cooperating with the first roller to define a nip, a driven component co-rotatable with the first roller, and a driving component rotatable for abutting against and driving the driven component to rotate, thereby permitting feeding of the document sheet through the nip. During rotation of the driving component, the document sheet is brought into contact with the first and second rollers for a predetermined time period to perform skew correction before the driving component rotates the driven component.

Abstract: A method for switching a touch keyboard and a handheld electronic device and a storage medium using the method are provided. The method is suitable for a handheld electronic device having a touch screen. In the method, a character input function is first activated to display a first type touch keyboard on a side of the touch screen. A touch signal produced within a display area of the first type touch keyboard is then received and it is determined whether the touch signal moves to another side of the touch screen. If the touch signal is determined to move to the another side of the touch screen, a second type touch keyboard is displayed on the another side of the touch screen. Accordingly, the users can switch the touch keyboard to another one conveniently so as to input characters.