Abstract: A semiconductor device includes a substrate having a magnetic tunneling junction (MTJ) region and a logic region, a magnetic tunneling junction (MTJ) on the MTJ region and a first metal interconnection on the MTJ. Preferably, a top view of the MTJ includes a circle and a top view of the first metal interconnection includes an ellipse overlapping the circle.

Abstract: The present invention provides an improved structure of laser sight, which comprises a sight body, a block, a displacement adjusting device, and a switch. The block can be disposed flexibly to locations on one side of the sight body for fitting different type of firearms. The displacement adjusting device can control the location of a laser module inside the laser sight for changing the location of light emission of the laser module and modifying the location of the laser module. The switch is used for controlling the laser module and improving the convenience in control. By using the structure described above, the laser sight will have better practicability and sighting performance.

Abstract: A substrate transmission apparatus is provided. The substrate transmission apparatus includes two supporting stands, a transmission shaft having two end portions, a supporting shaft having two end portions, first rollers, and second rollers. Two end portions of the transmission shaft are respectively connected to the two supporting stands. Two end portions of the supporting shaft are respectively connected to the two supporting stands, and the supporting shaft is located above the transmission shaft. The first rollers are fixed at intervals on the transmission shaft and rotate with the transmission shaft to convey a substrate placed thereon. The second rollers are rotatably connected to the supporting shaft and are in contact with an upper surface of the substrate, such that the substrate is conveyed and sandwiched between the first rollers and the second rollers.

Abstract: A rain shielding device for an automobile includes an umbrella holder, an umbrella cloth, and a power accumulator. The umbrella holder includes a first edge column mounted on a vehicle door, a second edge column mounted on a vehicle body, a plurality of main umbrella sticks between the first edge column and the second edge column, and two interlock members. The umbrella cloth is covered on the umbrella holder. The power accumulator includes a movable member, a plurality of auxiliary umbrella sticks, and an energy-storing member. The interlock members move the movable member when the vehicle door opens, and then the movable member interacts with the auxiliary umbrella sticks to push the main umbrella sticks and umbrella cloth unfolding. The energy-storing member stores energy when the umbrella cloth unfolds and releases energy when the vehicle door is closed; thus provides an auxiliary force when the umbrella cloth folds/unfolds.

Abstract: An automotive virtual surround audio system is implemented in an automobile to receive left- and right-channel audio sources. A synthesizer receives the left- and right-channel audio sources to extend the sources into temporary rear-left and rear-right audio sources. A weighting device receives the left- and right-channel audio sources to perform a weighting operation and produce temporary front-left and front-right audio sources. A first filter receives the temporary front-left and front-right audio sources to perform a filtering operation and produce virtual front-left and front-right audio sources. A second filter receives the temporary rear-left and rear-right audio sources to perform a filtering operation and produce virtual rear-left and rear-right audio sources. Thus, the virtual audio image position is reproduced.

Abstract: A crosstalk cancellation system for preserving quality of sound and the parameter determining method thereof. The system can cancel a two-channel audio signal without compensating a frequency response of an ipsilateral HRTF. The method includes providing an audio signal input device for inputting the two-channel audio signal, modeling a relation between parameters of the crosstalk cancellation system and a head related transfer function (HRTF) to thereby obtain an output transfer impulse response, setting contralateral parts of the output transfer impulse response approximate to zero, setting ipsilateral parts of the output transfer impulse response equal to a delay of ipsilateral head related impulse responses (HRIRs) corresponding to the HRTF, and performing an inverse operation to compute the parameters of the crosstalk cancellation system.

Abstract: A rain shielding device for an automobile includes an umbrella holder, an umbrella cloth, and a power accumulator. The umbrella holder includes a first edge column mounted on a vehicle door, a second edge column mounted on a vehicle body, a plurality of main umbrella sticks between the first edge column and the second edge column, and two interlock members. The umbrella cloth is covered on the umbrella holder. The power accumulator includes a movable member, a plurality of auxiliary umbrella sticks, and an energy-storing member. The interlock members move the movable member when the vehicle door opens, and then the movable member interacts with the auxiliary umbrella sticks to push the main umbrella sticks and umbrella cloth unfolding. The energy-storing member stores energy when the umbrella cloth unfolds and releases energy when the vehicle door is closed; thus provides an auxiliary force when the umbrella cloth folds/unfolds.

Abstract: An automotive virtual surround audio system is implemented in an automobile to receive left- and right-channel audio sources. A synthesizer receives the left- and right-channel audio sources to extend the sources into temporary rear-left and rear-right audio sources. A weighting device receives the left- and right-channel audio sources to perform a weighting operation and produce temporary front-left and front-right audio sources. A first filter receives the temporary front-left and front-right audio sources to perform a filtering operation and produce virtual front-left and front-right audio sources. A second filter receives the temporary rear-left and rear-right audio sources to perform a filtering operation and produce virtual rear-left and rear-right audio sources. Thus, the virtual audio image position is reproduced.

Abstract: A clamp device for a reciprocating saw is disclosed herein, which does not require the use of a tool for saw blade replacement. The main feature of the device is that two clamping blocks are pivotally mounted on a bracket and each of the clamping blocks has a tooth portion and a cam portion formed on an outer surface thereof. An elastic member is located between the bracket and the clamping blocks. A button connected to a rod, which passes through a cover plate of the bracket and includes a tooth slot for engaging with the tooth portion of the clamping block. When the rod moves in an axial direction, the two clamping blocks are brought to rotate so that the cam portion can fasten or loosen the saw blade, and thereby the saw blade can be mounted and demounted conveniently and rapidly.

Abstract: A clamp device for a reciprocating saw is disclosed herein, which does not require the use of a tool for saw blade replacement. The main feature of the device is that two clamping blocks are pivotally mounted on a bracket and each of the clamping blocks has a tooth portion and a cam portion formed on an outer surface thereof. An elastic member is located between the bracket and the clamping blocks. A button connected to a rod, which passes through a cover plate of the bracket and includes a tooth slot for engaging with the tooth portion of the clamping block. When the rod moves in an axial direction, the two clamping blocks are brought to rotate so that the cam portion can fasten or loosen the saw blade, and thereby the saw blade can be mounted and demounted conveniently and rapidly.

Abstract: A tension-adjusting device for a chain in a chain saw comprises an adjusting assembly, a fixing base, a brake disk, a position piece and a fixing piece, wherein the adjusting assembly, the brake disk, the position piece and the fixing piece are locked together on the fixing base by a bolt. The adjusting assembly further comprises a knob, a nut, a fixing member, and an adjusting ring. An operator merely needs to rotate the knob of the adjusting assembly to drive the adjusting ring and the brake disk, such that the position piece can be moved forward and backward, thereby to attain the tension adjustment of chain.

Abstract: A brake device for a chain saw is provided, wherein a driving shaft, which passes through a brake block, a torsion spring, a driving block and a chain wheel, is assembled with a driven gear, and two ends of the torsion spring are respectively fixed to the brake block and the driving block. The driven gear is loosely fit to the brake block, and the chain wheel is fixed to the driving shaft. When the driven gear is driven to rotate, the brake block, the driving shaft and the chain wheel are brought to rotate synchronously. When a force is applied to the brake block via a brake pin, the torsion spring will deform and separate from the driving block so that the driving block fails to transmit a driving force to the brake block, and thereby the braking effect is achieved.

Abstract: A brake device for a power tool has a brake assembly, a bearing portion, a pinion and a gearbox. The brake assembly includes a brake base, a cover, a first throttle cable, a second throttle cable, a brake-activating block, a brake-guiding pillar, a brake band and a brake drum. The first throttle cable, the brake-activating block and the second throttle cable are linearly connected together in series. The brake-activating block is designed to abut against the brake-guiding pillar in a brake position and a release position, respectively. With the relative movement among the first throttle cable, the brake-activating block and the brake-guiding pillar, the abutting or separating state between the brake band and the brake drum can be easily controlled.

Abstract: A crosstalk cancellation system for preserving quality of sound and the parameter determining method thereof. The system can cancel a two-channel audio signal without compensating a frequency response of an ipsilateral HRTF. The method includes providing an audio signal input device for inputting the two-channel audio signal, modeling a relation between parameters of the crosstalk cancellation system and a head related transfer function (HRTF) to thereby obtain an output transfer impulse response, setting contralateral parts of the output transfer impulse response approximate to zero, setting ipsilateral parts of the output transfer impulse response equal to a delay of ipsilateral head related impulse responses (HRIRs) corresponding to the HRTF, and performing an inverse operation to compute the parameters of the crosstalk cancellation system.

Abstract: The present invention compensates bass frequency for a loudspeaker without using any sensor. The strength and stability of the loudspeaker are enhanced and the working frequency is lowered too. Adaptive loudnesses for various spaces are set. And the parameter drift owing to long-term operation is restrained as well.

Abstract: A tension-adjusting device for a chain in a chain saw comprises an adjusting assembly, a fixing base, a brake disk, a position piece and a fixing piece, wherein the adjusting assembly, the brake disk, the position piece and the fixing piece are locked together on the fixing base by a bolt. The adjusting assembly further comprises a knob, a nut, a fixing member, and an adjusting ring. An operator merely needs to rotate the knob of the adjusting assembly to drive the adjusting ring and the brake disk, such that the position piece can be moved forward and backward, thereby to attain the tension adjustment of chain.

Abstract: A brake device for a power tool has a brake assembly, a bearing portion, a pinion and a gearbox. The brake assembly includes a brake base, a cover, a first throttle cable, a second throttle cable, a brake-activating block, a brake-guiding pillar, a brake band and a brake drum. The first throttle cable, the brake-activating block and the second throttle cable are linearly connected together in series. The brake-activating block is designed to abut against the brake-guiding pillar in a brake position and a release position, respectively. With the relative movement among the first throttle cable, the brake-activating block and the brake-guiding pillar, the abutting or separating state between the brake band and the brake drum can be easily controlled.

Abstract: An engine starting device includes a starting unit, a clutch unit and a transmission unit, all of the three units being installed on the same axle. The starting unit and the clutch unit are connected with each other by friction therebetween and the friction is applied only when the starting unit is operated in desired direction so that the starting unit and the clutch unit are co-rotated. The clutch unit is connected to the transmission unit so that the power can be directly transferred to the transmission unit. The device employs the pressure of the engine to compress the coil spring which generates a force to accelerate the speed of the engine such that the user can easily start the engine.

Abstract: A device for heightening engine efficiency is provided with a heat-insulating seat of engine having a plurality of air inlets communicable with oil-gas inlets. The air inlets are provided with a valve, and the heat-insulating seat is provided with a cam mechanism, which is connected to a carburetor control device by means of an operation piece. When the carburetor is operated to drive the cam mechanism to open the valve such that fresh air is allowed to enter into the engine, and the combustion efficiency can be thus heightened. As soon as the accelerator is stopped, the valve is closed automatically.