摘要:
Current sources, systems including the current source, and methods for regulating and/or controlling a circuit using the current source. The current source is generally configured to (i) receive a reference current, a bias voltage and a feedback/input current and (ii) provide an output current. The systems generally include the current source, a circuit directly or indirectly receiving the output current, a bias source/generator configured to provide the bias voltage, and a current reference configured to sink or source a predetermined amount of current from or to the output current. The method generally includes (a) applying a bias voltage to the current source, the current source receiving an input current and providing an output current; (b) sinking or sourcing a reference current from or to the output current; (c) applying the output of the current source directly or indirectly to a regulated circuit; and (d) providing the input current from the regulated circuit.
摘要:
A sprinkler support for the in-ground sprinkler heads includes a base at the lower position, a sidewall extending vertically ascending from the base, a clamping structure disposed at the sidewall of the sprinkler support to secure the sprinkler head, a cushioning structure capable to absorb physical stresses, and anchoring structures holding the sprinkler support with respect to the soil. The sprinkler support accommodates a variety of different size of sprinkler heads by having an adapter, by cantilever fingers extended from the sidewall upwardly or by constructing with two halves, wherein each half comprises the base and sidewall.
摘要:
A pocket-hole drilling apparatus for drilling pocket-holes in a workpiece is disclosed. In one embodiment, an initiation switch actuates clamping the workpiece and the movement of a drilling module to cut a pocket-hole. The drilling module has a motor and a step-drill mounted thereon, which is slidably mounted on a guide module. The axis of the drilling module movement intersects work surface. In another embodiment, a movable fence provides the adjustability of pocket-hole depth. In yet another embodiment, two actuator tips are disposed in a fence to prevent the drilling of a pocket-hole through the sidewall of a workpiece. In still another embodiment, a short stroke clamping actuator is used to prevent human finger injury. In still another embodiment, a blower or an ejector pump is used to remove wood chips, wherein the blower is either attached to a drilling motor or to a separate blower motor; the ejector pump is mounted near the drill guide. In still another embodiment, two pocket-drills are slidably mounted on a block so as to drill two pocket-holes and to adjust pocket-hole spacing. In still another embodiment, a mounting structure is disposed either underneath or above the work surface to mount drilling module(s) so as to drill multiple pocket-holes into a wide workpiece at one setup. In still another embodiment, a drill guide forms a clearance for the cutting edges of the step-drill to minimize wear on the edges. In a further embodiment, an actuator provides both clamping and drilling movements, wherein the actuator is an electric motor or a hand lever.
摘要:
A method for nano-scale high resolution patterning of self-assembled monolayer using soft X-rays is provided. The method involves forming an aromatic imine molecular layer having substitutents at its terminal rings on a substrate, selectively cleaving bonds to the substituents of the aromatic imine molecular layer, and hydrolyzing the aromatic imine molecular layer.
摘要:
A liquid crystal display for automatically adjusting brightness of interference image displayed at ECB sub pixels of quad type cells of a liquid crystal display panel in accordance with brightness of a background screen is disclosed. The liquid crystal display includes first to n-th look-up tables each holding a mapping of one first to n-th mappings of ECB brightness data to cell location information for the quad cells of the liquid crystal display panel; an image processor that calculates a brightness data distribution of an image; a viewing angle controller that selects one of the first to the n-th look-up tables depending on the calculated brightness data distribution; and a data aligner that combines the selected ECB brightness data with the input RGB data, and then aligns the combined RGB data and ECB brightness data for display in accordance with a quad cell structure.
摘要:
The present invention discloses an apparatus and method for obtaining rights management data for broadcast or multicast content. In one embodiment, a broadcast trigger message is obtained from a broadcast source. At least one content license identifier from said broadcast trigger message is obtained. Afterwards, at least one content license file associated with said at least one content license identifier is requested. Notably, the broadcast trigger message is shared by all endpoint devices while the content license file is uniquely adapted for the requesting endpoint device.
摘要:
A radio frequency (RF) micro electro-mechanical system (MEMS) device and method of making same are provided, the device including an RF circuit substrate and an RF conducting path disposed on the RF circuit substrate, a piezoelectric thin film actuator, and a conducting path electrode. The piezoelectric thin film actuator has a proximal end that is fixed relative to the RF circuit substrate and a cantilever end that is spaced from the RF circuit substrate. The conducting path electrode is disposed on the cantilever end of the piezoelectric thin film actuator. The cantilever end of the piezoelectric thin film actuator is movable between a first position whereat the conducting path electrode is spaced from the RF path electrode and a second position whereat the conducting path electrode is spaced from the RF path electrode a second distance, wherein the second distance is less than the first distance. The RF MEMS device is particularly useful as a tunable capacitor. The RF MEMS device requires lower operating voltage, and provides variable RF tuning capacity, fewer stiction problems, simplified fabrication, and an improved switching time.
摘要:
A micro gripper and a method for manufacturing the same are disclosed. The manufacturing method of the micro gripper supplies a fluid to a penetration hole of a gripper jaw, and discharges the fluid from opposite surfaces of the first and second structures of the micro gripper, thereby completely detaching the object attached on the opposite surfaces of the first and second structures by electrostatic force and removing the stiction. Furthermore, the present invention can grip the object more strongly by sucking the fluid from the penetration hole of the gripper jaw, when the first and second structures of the gripper jaw grip the object.
摘要:
A system is described for long-term controlled release delivery of a drug or a therapeutic agent. According to the invention, one or more drugs or therapeutic agents contained in microspheres are mixed with a temperature sensitive hydrogel which is then introduced directly to the desired situs of the drug or therapeutic agent. The temperature sensitive hydrogel may also contain a drug or a therapeutic agent, for example, a pain relieving drug, for a short-term controlled release. The temperature sensitive hydrogel is in liquid state at room temperature, but upon injection, shortly becomes gelatinous. This system is particularly suitable for treatment of diseases, disorders, or conditions, for example, tumors, discogenic back pain, or arthritis, warranting localized administration of a drug or a therapeutic agent. In addition, the specification provides a method for production of a drug—or therapeutic agent-containing microspheres.
摘要:
An apparatus and method of fabricating a preform for a plastic optical fiber including a rotary reactor, the rotary reactor including an introduction part having a reactant inlet through which a reactant is introduced into the rotary reactor and a reaction part that is separated from the introduction part by a blocking wall having a flow path through which the reaction part is connected with the introduction part, the flow path disposed at the center of the blocking wall, a UV blocking wall for preventing UV irradiation of the introduction part, a UV light-focusing optical system including a UV lamp and arranged over the rotary reactor, and a conveyor for transferring the UV light-focusing optical system in a radial direction of the rotary reactor.