摘要:
A color signal demodulation apparatus includes an A/D converter for converting a composite color television signal into a digital signal, a pulse generator for generating timing pulses and sampling clocks, a Y/C separator for separating the output from the A/D converter into a luminance signal and a carrier chrominance signal, a subcarrier generator for detecting the phase of the subcarrier from the color burst signal, and a color signal demodulator for obtaining baseband color signals. The apparatus of the invention requires no low-pass filter.
摘要:
In an encoding system comprising a buffer circuit for successively storing variable length codes and for producing the stored codes at a predetermined rate as transmission codes, a controller produces a control signal which stepwise specifies a variable amount of the stored codes. Responsive to the control signal, a preliminary processing circuit preliminarily processes the digital video signals into preliminarily processed signals which are dependent on the amounts and which are predictively encoded in accordance with an encoding rule by a non-recursive predictive encoder into predictive error signals with information of the preliminarily processed signals preserved. For use in the buffer circuit, a variable length encoder controlled by the control signal further encodes the predictive error signals into the variable length codes of code lengths related to the amounts. The processing circuit may comprise at least one of a quantizer, a thinning circuit, and a band compression circuit. A decoding system decodes the transmission codes in accordance with a decoding rule reversible to the encoding rule to produce reproductions of the preliminarily processed signals. A combination of the encoding and the decoding systems is connected in cascade to at least one of an additional combination of the encoding and the decoding systems to repeatedly edit and/or dub video signals in a digital form. The encoding system may additionally comprise an additional predictive encoder operable, when the amount is large to compensate for that visibly perceptible degradation of picture qualities which would otherwise result from a reduction in the numbers of bits representative of the predictive error signals produced by the non-recursive predictive encoder.
摘要:
The present invention provides a process for the preparation of 5,6,7,7a-tetrahydro-4H-pyridin-2-one derivatives of the general formula: ##STR1## in which R is a hydrogen atom or a phenyl radical optionally substituted by at least one halogen atom, lower alkyl radical, lower alkoxy radical, nitro group, carboxy group, alkoxycarbonyl radical or cyano group; R' is a hydrogen atom or a lower alkyl radical and n is 0, 1, 2, 3 or 4; and of their addition salts with mineral or organic acids, wherein a compound of the general formula: ##STR2## in which R, R' and n have the same meanings as above and R" is a hydrogen atom or an alkyl radical containing up to 4 carbon atoms, is treated in an organic solvent with gaseous hydrogen choloride and gaseous hydrogen sulphide. The compounds have platelet anti-aggregant and anti-thrombotic properties.
摘要:
A predictive encoder is disclosed which has a non-linear quantizing characteristic. The transmission gain of the quantizer is less than unity when the amplitude component of the predictive error signal is smaller than a predetermined level and is substantially equal to unity when the amplitude component of the predictive error signal is higher than the predetermined level. As a result, undesired redundancy components are effectively suppressed without causing an increase in quantizing noise and a deterioration in information quality.
摘要:
A divisional excitation type coordinate switching device featuring a single magnetic shunt plate and preformed elongate excitation coils arranged on the top and bottom sides thereof and each surrounding a row or column of switching elements. Terminal blocks are secured to the four sides of the shunt plate, enabling arrangement of component parts in a fully developed formation. Outstanding among the advantages gained are substantial reduction in winding cost and overall size, ease of assembling and improved operational reliability.
摘要:
The present invention provides an ink composition for use in active energy beam-curable inkjet printing, wherein the ink composition has low viscosity yet exhibits superior curability and superior adhesion to many different substrates, and also exhibits excellent storage stability. An active energy beam-curable inkjet ink composition containing at least polymerizable monomers (A) and a stabilizer (B), and containing essentially no water, the inkjet ink composition containing, as the polymerizable monomers (A), at least a polymerizable monomer (A-1) containing a vinyl ether group and an acryloyl group, and a polymerizable monomer (A-2) containing 2 or more acryloyl groups.
摘要:
Provided is an ink composition used in active energy ray-curable inkjet printing, which has excellent curing property, discharge property, storage stability, and compatibility with various substrates. The inkjet ink composition of the present invention includes at least two types of polymerizable compounds selected from a group consisting of (A) 2-(2-vinyloxyethoxy) ethyl acrylate, (B) N-vinyl caprolactam, and (C) at least one type of bifunctional acrylate monomer including at least a diacrylate having a molecular weight of 250 or less.
摘要:
An ink composition which is used for active energy ray-curable inkjet printing, has excellent curability or adhesiveness to multiple base materials while having low viscosity, and exhibits excellent non-yellowing properties of the printed matter is provided. The composition comprises a polymerizable monomer (A) and photopolymerization initiators (B), the polymerizable monomer comprising 2-(2-vinyloxyethoxy)ethyl acrylate (A-1), and the photopolymerization initiators comprising oligo(2-hydroxy-2-methyl-1-(4-(1-methylvinyl)phenyl)propanone) (B-1) and other initiator (B-2).
摘要:
There is provided an inkjet ink which has satisfactory storage stability and inkjet ejection stability, exhibits excellent curability, and is capable of forming high quality images on coated paper by an inkjet system. Disclosed is an active energy ray curable inkjet ink composition comprising: 15-75% by weight of at least one polymerizable bifunctional monomer selected from the group consisting of dipropylene glycol diacrylate and 1,9-nonanediol diacrylate; and 1% by weight to 10% by weight of [4-(methylphenylthio)phenyl]phenylmethanone as a photopolymerization initiator.
摘要:
In an airbag-equipped steering wheel, a plurality of horn switch mechanisms assembled to a bag holder each have a securing pin, which is inserted into a corresponding one of through holes formed in a metal core. A clip is engaged with a locking groove of each securing pin, so that each horn switch mechanism is fastened to the metal core. The through holes include one or more normal through holes that restrict inclination of the corresponding securing pins, and a special through hole that has an inclination permitting portion. The inclination permitting portion permits the corresponding securing pin to be inclined about the corresponding clip 13 serving as a fulcrum. In the special through hole, the securing pin is permitted to be inclined about the clip serving as a fulcrum only when the clips are disengaged from the securing pin in all the normal through holes.