A packet-switching system having a buffer memory for storing received packets. The system has a FIFO-type table for storing data items each consisting of the start and end addresses of every region of the buffer memory from which data has been read out and transferred to a receiving station and which has thus become vacant. The start and end addresses of each region of the buffer memory are controlled, thereby achieving a high-speed control of the buffer memory.

A photoelectric conversion circuit which can detect only signal light from applied light, to avoid influence by disturbance light. An anode of a photodiode (1) is grounded and an input end of a tuning circuit (5) is connected to its cathode through an input terminal (3). An output end of the tuning circuit (5) is connected to an output terminal (4) through an amplifier (6). The output terminal (4) is grounded through a load resistor (7). The tuning circuit (5) is tuned with the frequency of sign…

A method for dynamic generation of synthetic images employs Delaunay mesh generation. Only the terrain portions of which a significant variation in the detail level takes place are processed in real-time, this significant variation being determined by the angular error, from the observer’s point of view, and relative to the various points of the terrain, which would be committed if these points were not processed, only the angular error greater than a certain threshold being taken into account.

A coated paper comprising a paper substrate, a pseudo-boehmite layer formed on the substrate and a silica layer laminated on the pseudo-boehmite layer, said coated paper having a 60.degree. specular glossiness of at least 30% as stipulated in ISO 2813.

A propylenic resin which is a homopolymer of propylene or a copolymer of propylene, has (i) intrinsic viscosity [.eta.] measured in decaline at the temperature of 135.degree. C. in the range of 0.5 to 10 deciliter/g and (ii) content of insoluble fraction in boiling n-heptane (W) in the range of 10 to 99 weight % and shows (iii) relation between relaxation time of rubber component measured by pulse NMR at the temperature of 30.degree. C. [T.sub.2H.sup.R (30): .mu.s], relaxation time of rubber com…

An improved technique for driving matrix displays, and in particular, passive matrix displays including row and column configurations of electro-optical display elements (e.g., liquid crystal, LED, plasma, and Electroluminescent). By analyzing illumination information about display elements, a matrix display is more effectively driven. Also, by using the method, the selection ratio in LCD displays is improved.

This invention prepares two control voltage to be input to a VCO circuit. The first control voltage is used to continuously change the oscillation frequency of the VCO circuit. The second control voltage is used to continuously change the first control voltage/oscillation frequency characteristics. The invention also includes a phase detecting circuit for comparing the phase of the data read from a disk with that of the output from the voltage-controlled oscillator, a frequency detecting circuit…

Thermal polymerization of a salt of aspartic acid affords polyaspartate directly without hydrolyzing polysuccinimide. Copolymerization of a salt of aspartic acid with aspartic acid itself affords a copolymer of succinimide and aspartate which may be readily derivatized to produce a sulfonated, phosphonated or hydrophobized polymer.

A method of calibrating a zero point of a flow sensor includes the steps of detecting a transition of output of the flow sensor caused in response to a shut down of a fluid, and adjusting the zero point of a characteristic curve representing the output of the flow sensor and a flow rate, such that the indicated flow rate is zero immediately after the transition of the flow sensor output.

An apparatus and method for scrubbing both surfaces of a substrate which includes a process section having a first unit, a second unit, a main arm mechanism for transferring a substrate into/from the first and second units, a first cassette or a second cassette section for transferring plural cassettes, a first and second sub-arm for transferring a substrate into/from the cassette sections, and controllers, such that a first substrate taken out from the first cassette section is subjected to the…