Abstract: An input device, including two or more ultrasonic transducers (UTs) driven by a driving signal (DS) for respectively sending a transmitting signal to sense an object; a driving circuit unit (DCU) generating the DS; a receiving circuit unit (RCU) determining whether echo signals (ESs) respectively returned from the two or more UTs are greater than a threshold value; a diplexer receiving and transmitting the DS to the two or more UTs, or receiving and transmitting the ESs to the RCU; and a control unit controlling the DCU to generate the DS, controlling the operation of the diplexer, and obtaining a relative motion information between the object and at least one of the two or more UTs according to all of ESs greater than the threshold value and determined by the RCU, so as to correspondingly output an input signal, is provided.

Abstract: A capacitive ultrasonic device is capable of detecting an object and providing information regarding an orientation of the object. The capacitive ultrasonic device includes a power source configured to generate a voltage signal, an array of sensor elements, each of the sensor elements being configured to generate an ultrasonic wave during a first period of the voltage signal and detect whether a wave is reflected from the object during a second period of the voltage signal when the voltage signal is applied thereto, and a control unit configured to activate a first portion of the array of sensor elements through the power source, and activate a second portion of the array of sensor elements when at least one of the first portion of the sensor elements detects a wave reflected from the object.

Abstract: The present utility model provides a locating device for a magnetic resonance system comprising an image sensor, an image display for displaying images acquired by the abovementioned image sensor, and a locator, which locator has at least one locating mark. There is no need for the abovementioned locating device for a magnetic resonance system to use a laser for locating and, therefore, the case where an operator is hurt by the laser will not occur. On the other hand, due to the use of the image sensor and the image display, the remote control of adjustment conditions can be accomplished, therefore there is no need to repeatedly enter into a magnetic resonance examination room to carry out operations during the adjustment process, which saves time and costs for the adjustments.

Abstract: A heat dissipation system comprises a printed circuit board and at least a heat dissipation device mounted on the printed circuit board for dissipating heat generated by an electronic member mounted on the printed circuit board. The at least a heat dissipation device comprises a base, a plurality of fins extending upwardly from the base and an air guiding member located at a corner of the base. These fins are spaced from each other to define a plurality of heat exchange passages. Non-fins are disposed at a side of the base to define a cooling air passage. The cooling air passage is parallel to the heat exchange passages of the fins. The air guiding member is located in the cooling air passage for controlling open and close of the cooling air passage.

Abstract: A heat dissipation device assembly for dissipating heat from a plurality of electronic components mounted on a printed circuit board, includes a heat sink (10) contacting one of the electronic components, a pair of fans (20) attached on a lateral side of the heat sink, and a fan duct (30) fixed on the fans. A plurality of guiding members (322, 346) are formed inwardly from the fan duct to be located in an interior of the fan duct. The guiding members are used for guiding a screwdriver (40) to accurately fit with screws (50) preassembled to the heat sink. Thus, the screws can be quickly and easily fastened by the screwdriver to mount the heat dissipation device assembly on the printed circuit board.

Abstract: Techniques, systems and apparatus are disclosed for detecting impedance. In one aspect, a microelectrode sensing device includes a substrate and an array of microelectrode sensors formed on the substrate. Each sensor includes at least one conductive layer formed above the substrate and patterned to include a counter electrode and multiple sensing electrodes to detect an electrical signal in absence and presence of one or more target cells positioned on at least a portion of a surface of each sensing electrode. The sensing electrodes are spaced apart and arranged around the counter electrode to provide a spatially averaged value of the detected electrical signal.

Abstract: A capacitive ultrasonic device is capable of detecting an object and providing information regarding an orientation of the object. The capacitive ultrasonic device includes a power source configured to generate a voltage signal, an array of sensor elements, each of the sensor elements being configured to generate an ultrasonic wave during a first period of the voltage signal and detect whether a wave is reflected from the object during a second period of the voltage signal when the voltage signal is applied thereto, and a control unit configured to activate a first portion of the array of sensor elements through the power source, and activate a second portion of the array of sensor elements when at least one of the first portion of the sensor elements detects a wave reflected from the object.

Abstract: An audio/video recording method and device for recording a main audio/video file and at least one index audio/video file corresponding to the main audio/video file. A section of the index audio/video files can be transformed into text data serving as a portion of file names of the main audio/video file. When a user collates or uses the main audio/video file, the index audio/video file is used to accelerate distinguishing what the main audio/video files are, thereby facilitating searching, classification and management of the main audio/video file effectively.

Abstract: A heat dissipation device assembly for dissipating heat from a plurality of electronic components mounted on a printed circuit board, includes a heat sink (10) contacting one of the electronic components, a pair of fans (20) attached on a lateral side of the heat sink, and a fan duct (30) fixed on the fans. A plurality of guiding members (322, 346) are formed inwardly from the fan duct to be located in an interior of the fan duct. The guiding members are used for guiding a screwdriver (40) to accurately fit with screws (50) preassembled to the heat sink. Thus, the screws can be quickly and easily fastened by the screwdriver to mount the heat dissipation device assembly on the printed circuit board.

Abstract: A heat sink assembly includes a heat sink and a clip assembly received in the heat sink. The clip assembly comprises a clip and a movable fastener pivotally connected to the clip via a pair of supporters. Each supporter defines a pivot hole deviated from a center thereof and a retaining slot above the pivot hole. The clip comprises a main body received in the heat sink and two arms extending from the main body and pivotally received in the retaining slots of the supporters. The movable fastener pivotally extends in the pivot holes of the supporters. The movable fastener moves relative to the heat sink and causes rotation of the supporters in a matter such that a distance from the main body of the clip to a bottom of the heat sink is changed, whereby the clip assembly can provide adjustable spring force acting on the heat sink.

Abstract: A heat sink assembly includes a heat sink and a clip assembly received in the heat sink. The clip assembly comprises a clip and a movable fastener pivotally connected to the clip via a pair of supporters. Each supporter defines a pivot hole deviated from a center thereof and a retaining slot above the pivot hole. The clip comprises a main body received in the heat sink and two arms extending from the main body and pivotally received in the retaining slots of the supporters. The movable fastener pivotally extends in the pivot holes of the supporters. The movable fastener moves relative to the heat sink and causes rotation of the supporters in a matter such that a distance from the main body of the clip to a bottom of the heat sink is changed, whereby the clip assembly can provide adjustable spring force acting on the heat sink.

Abstract: A method for fabricating a patter is provided as followed. First, a material layer is provided, whereon a patterned hard mask layer is formed. A spacer is deposited on the sidewalls of the patterned hard mask layer. Then, the patterned hard mask layer is removed, and an opening is formed between the adjacent spacers. Afterwards, a portion of the material layer is removed to form a patterned material layer by using the spacer as mask.

Abstract: A method for delineation of characteristic points in an electrocardiogram signal includes the steps of: (a) processing the electrocardiogram signal to obtain at least one multiscale differential operator wavelet transform thereof; and (b) locating at least one characteristic point in at least one wave segment of the electrocardiogram signal based on the at least one multiscale differential operator wavelet transform.

Abstract: An ultrasonic transducer comprising a flexible membrane, a first electrode in the flexible membrane, a second electrode in the flexible membrane, and a chamber in the flexible membrane between the first electrode and the second electrode.

Abstract: A three-dimensional electrocardiogram display method for 3-D representation of a plurality of cardiac signals is provided. In this method, a 3-D rectangular coordinate system is defined to display the 3-D representation of the cardiac signals. Further, an amplitude display scheme, preferably an amplitude-to-color mapping table, is defined to assign various quantization levels of amplitude to specified distinctive colors. By graphic processing and display means, the 3-D representation of the cardiac signals can be generated and displayed. The physicians can choose to observe the 3-D graph in various views, including perspective view, sectional view, and top rectangular view. This allows the physicians to make diagnosis of heart diseases by observing just one or two 3-D representations of the cardiac signals. The physicians can thus have an overall integral view over a plentiful number of cardiac signals and thereby make diagnosis about the heart conditions of the patient more easily.

Abstract: The non-acicular modified maghemite and magnetite have high coercivity of, for the maghemite, up to 2200 Oe, saturation and residual magnetization of 63-85 emu/g and 43-52 emu/g, respectively; for the magnetite, the corresponding values are 800-1600 Oe, 82-87 emu/g, and 44-51 emu/g, respectively; while retaining same squareness ratio and same chemistry with conventional iron oxides, fine particle size of around 50 nm, easier dispersion and coating, invaried properties after curing, and low value of temperature coefficient of coercivity (0.24-0.37%/.degree. C. for the maghemite and 0.20-0.33%/.degree. C. for the magnetite), have been invented. They are thus especially suitable for high density recording. The modified maghemite and magnetite are prepared by precipitating from aqueous solution containing Fe, Mn, Co and Zn ions at proper ratio using an organic alkali as precipitant, followed by specific heat treatment sequences.

Abstract: A method for preparing a magnetic recording medium includes the following steps of providing a substrate; providing a solution consisting essentially of ions of cobalt, manganese and iron in deionized water; and preheating the substrate and spraying the solution onto the preheated substrate at an elevated temperature to uniformly distribute droplets thereon and form a magnetic recording medium film on the subtrate. Such method can prepare a magnetic thin film which has a high recording density and is cost-effective.

Abstract: A method for preparing a barium-ferrite-coated, needle-shaped .gamma.-Fe.sub.2 O.sub.3 magnetic powder of better properties is provided. The method includes the following steps of a) letting an iron-containing solution undergo a reaction to precipitate a needle-shaped .alpha.-FeOOH phase powder, b) mixing said .alpha.-FeOOH powder into a barium-containing solution in a predetermined Fe/Ba ratio, c) filtering without washing the precipitated powder, and d) subjecting the precipitated powder to heat treatments including calcination, reduction and oxidation.

Abstract: A method for preparing a magnetic recording medium includes the steps of providing a substrate, providing an alloy composite target attaching thereon Co and Fe pellets to modify the composition of this magnetic recording medium, and utilizing the target to form a (Co,Mn) modified .gamma.-Fe.sub.2 O.sub.3 thin film on the substrate under controlled conditions. Such method can provide a magnetic recording medium which is cost-effective and has a better SNR, a better resistance to corrosion and a high coercivity.

Abstract: An automatic monitoring and recording device for erythrocyte sedimentation employs a light source and a photodetector to detect the changes of light transmittance at the junction of plasma and red blood cell column. Changes of light transmittance at the junction reflect the descent of red blood cell column. The light source and photodetector pair is arranged so that it will track to the plasma - red blood cell column junction all the way the red blood cells fall. The whole course of erythroctye sedimentation is monitored and recorded automatically by a microcomputer.