Abstract: A thermoplastic biodegradable resin having a number average molecular weight of 25,000-45,000, which is prepared by polycondensing one or a plurality of dicarboxylic acids represented by formula (I) with one or a plurality of diols represented by formula (II):ROOC--(--CH.sub.2 --).sub.n --COOR (I)HO--(--CH.sub.2 --).sub.m --OH (II)wherein R and R' are both hydrogen or are both methyl, n is 2 to 8 and m is 2 to 6.

Abstract: A spindle motor control circuit for an optical recording and regenerating system is disclosed. The spindle motor control circuit adjusts the gains in response to the change of the position of the pickup for controlling the speed of the spindle motor to maintain the pickup at a constant line velocity regardless of the positions of the pickup so that the angular velocity of the spindle motor can have a constant line velocity during the pickup moves by driving the sled motor.

Abstract: A power transfer method and apparatus for efficient transfer of power are disclosed. Input power is converted in an essentially lossless manner to an intermediate form having a voltage or current in excess of that desired at the load. The intermediate power form is split into first and second parts, where the first part of the intermediate power form approximately matches an output power form desired at an output of the power transfer apparatus and the second part represents an excess power form. The first part of the intermediate power form is transferred to the output of the power transfer apparatus and the excess part is stored. Part or all of the stored excess energy is recycled in an essentially lossless manner, converted into a form that approximately matches the output power form desired at the output of the power transfer apparatus and transferred to the output of the power transfer apparatus.

Abstract: Logic fencing circuit and method are provided for increasing system protection at a multiprocessor system interface so that spurious noise (e.g., attributable to an electrostatic discharge through a signal cable) is more reliably isolated from an active portion of the processing system. The noise fencing circuit, which is responsive to a fence control signal, includes logic circuitry for attenuating a received noise signal by constraining the noise signal to a magnitude less than or equal to the voltage level of a system power supply. The attenuating circuitry outputs an attenuated noise signal to a signal fence circuit which, when enabled by the fence control signal, outputs a substantially constant isolation signal in response to a received, attenuated noise signal. A logically staged fencing method is also set forth.

Abstract: A sensor device for a mass flow controller suitable for stably sensing gas flowrate of the mass flow controller regardless of variation of peripheral temperature.

Abstract: A picture control system for a video cassette tape recorder, capable of compensating edge portions of a reproduction luminance signal by obtaining a hard compensating signal by filtering a high-band component of the reproduction luminance signal, a soft compensating signal by filtering a low-band component of the delayed reproduction luminance signal, and selecting the hard compensating signal combining control signal and then subtracting from the delayed reproduction luminance signal. The system includes a picture control signal generator, a hard-controller for filtering a high-band component of reproduction luminance signal, a soft controller for filtering a low-band component of reproduction luminance signal, and a signal combiner for selecting the hard and soft compensating signals and combining the selected signal with the delayed reproduction luminance signal.

Abstract: A printed circuit board includes at least a twisted pair of single-sided printed circuit board (PCB) having a twisted pair of conductive strips bonded on a same side of the PCB by mounting a plurality of jumpers on the PCB each jumper bridging between two conductor segments of one conductive strip to cross over another conductor segment of the other conductive strip, thereby forming a twisted pair of the two conductive strips on a single-sided printed circuit board for reducing radio frequency interferences.

Abstract: A magnetic flaw detector for use in small-diameter tubular goods employs a second magnetic field to confine a first magnetic field to reside within a desired volumetric region in the wall of a specimen under test. A flux leakage detector and a variable reluctance sensor provide means for detecting and discriminating between defects on the inner and outer surfaces of the specimen.

Abstract: A rotatable circular platform is used for automatically testing power transformers. The rotatable circular platform is provided with a plurality of carrier tracks equally spaced around the periphery of the rotatable circular platform; each one of the carrier tracks is adapted to carry a power transformer to be tested and is provided with a corresponding connecting post having a pair of connecting contact points. Around the outer periphery is a plurality of stationary posts, each one of which has a pair of stationary contact points to allow a sliding engagement with the connecting contact points of the connecting posts. Each pair of the stationary contacts is electrically connected to a test instrument to test the performances of power transformers, while each pair of the connecting contact points is provided with a pair of clamps to clamp onto the test terminals of a power transformer loaded on a corresponding carrier track.

Abstract: Disclosed is an olefin epoxidation process that contacting an olefinically unsaturated substrate with oxygen in the presence of catalytic amount of a bimetallic complex under the reaction conditions such that the olefin is at least partially oxidized. The metals introduced in the bimetallic complex are independently selected from vanadium, chromium, manganese, iron, cobalt, nickel, copper, molybdenum, ruthenium, rhodium, palladium, tungsten, rhenium, osmium, iridum or platinum.

Abstract: A method for use in a multimedia conferencing arrangement to control multiple concurrent calls where each call comprises one or more channels. A first call among a first set of user stations and a second call among a second set of user stations are merged into a single call comprising a plurality of channels among at least three user stations from the first and second sets. The plurality of channels of the single, merged call corresponds to a combination of channels of the first and second calls and may include a signalling channel, a voice channel, and one data channel for each data channel of the first and second calls. The method is also applicable to calls including image or video channels.

Abstract: A non-wound three-piece golf ball which comprises an inner core, an outer layer and a cover, the inner core having a diameter of 23-35 mm and a hardness (Shore D) of 30-62, the outer layer having a diameter of 36-41 mm and a hardness (Shore D) of 30-56, the golf ball having a hardness (Shore D) 46-62 at the outer site in the inner core, which is 11.5-17.5 mm apart from the center of the ball. The golf ball has a maximum hardness (Shore D) in the range of 46-62 at the outer site of the inner core which is located at the interface between the inner core 1 and the outer layer 2 of the golf ball and the hardness then decreases both inwardly and outwardly.

Abstract: A process is described for removing from an integrated circuit structure photoresist remaining after a metal etch which also removes or inactivates a sufficient amount of any remaining chlorine residues remaining from the previous metal etch to inhibit corrosion of the remaining metal for at least 24 hours. The process includes a first stripping step using either O.sub.2 gas or a combination of O.sub.2 gas and N.sub.2 gas and/or a fluorocarbon gas associated with a plasma followed by a subsequent step using a combination of O.sub.2 and NH.sub.3 gases associated with a plasma. When fluorocarbon gas is used in the first stripping step, a flushing step may be used prior to introduction of the NH.sub.3 gas to flush out any remaining fluorocarbon gas. Preferably, the plasma is generated in a microwave plasma generator located upstream of the stripping chamber and the stripping gases pass through this generator so that reactive species produced from the gases in the plasma enter the stripping chamber.

Abstract: The present invention is related to an improved structure of an acupuncture acus, especially a multiple safety acupuncture acus provided with a bellow protector. The grip of the said acupuncture acus is produced by injection molding and is in the form of a cone flange which can be engaged exactly by a protective sleeve for convenience of packing; a bellow type protector is built from the adjoining position between the acupuncture acus and the grip to the needle head; the end of the protector is in the form of a hollow ring, its inside ring is made of membrane, while its outer ring is made of soft plastic.

Abstract: Access to a buffer memory is provided by a controller architecture and method employing an arbiter state machine for control of data transfer between multiple external peripheral devices and the dynamic random access memory buffer. Data transfer channels for each peripheral device include a first-in, first-out sub-buffer. Each data transfer channel communicates transfer requests to the arbiter when data is present in the FIFO. When data transfer to or from the FIFO nears an overrun or underrun condition, the data channel issues an urgent request to the arbiter state machine. The arbiter state machine prioritizes data transfer requests for enabling transfer between the buffer memory and data channels. Once a data transfer is in process it continues uninterrupted unless an urgent request is received from another device. In addition, the invention includes a refresh circuit for the dynamic RAM incorporating similar request and urgent request signals provided to the arbiter state machine for resolution.

Abstract: A cylinder lock includes a cylindrical housing connected with a circular insert at its bottom to receive therein a movable barrel and a fixed barrel. A plurality of lock pin assemblies are set in a plurality of pin holes vertically through the movable lock barrel to control the connection of the movable lock barrel with the fixed lock barrel by use of the various stepped pins of an authorized key. The stepped pins can be detached from the key for keeping separately.

Abstract: A shuttlecock for hitting or kicking by a hand, foot or racket comprising a hollow elastic body, a head connected with the body and a tail connected with the head. The body can shrink to press the air in its hollow interior through a curved through hole in the head to give out a whistling sound when this shuttlecock is hit or kicked.

Abstract: The present invention provides an architecture for sampling incoming asynchronous data pulses and providing synchronous output pulses having a constant pulse width. The invention has an input stage comprising a toggling flip-flop receiving the asynchronous pulses on the clock input. The complementary output of the flip-flop is provided to a dual path synchronizer stage followed by a dual path one-shot stage to terminate the synchronized pulse.

Abstract: A pencil box which can be converted into a desk lamp, including a box seat, a box cover and a pivot member connecting the box cover to the box seat, the box seat having two battery containers and the box cover having two lamp sockets connected to the battery containers via a set of wires which are disposed on the box seat and through the pivot member to form a circuit, a switch being further disposed on the box cover to control the circuit, whereby when batteries and lamps are installed respectively in the battery containers and lamp sockets, the lamps can be lighted up via the switch with the box cover pivoted upward to convert the pencil box into a desk lamp.

Abstract: A lipstick cap with lamp devices, including a cap sleeve used to receive common lipstick seat, and a rotary switch rotarily engaged with the cap sleeve, wherein the cap sleeve is equipped with several lamp devices and a pair of conducting plates electrically connect the lamp devices in series, and the rotary switch has a battery container including an anode and cathode conducting plates which can be selectively electrically connected with the conducting plates of the lipstick cap by means of rotating the rotary switch thereabout whereby when a battery is disposed in the battery container, the lamp devices can be alternatively lighted up in case of applying the lipstick in a dimly lighted place.