Abstract: A method of transmitting and decoding biphase coded signals individually representing separate data services and inserted in the line blanking interval of a video signal greatly increases the probability of avoiding the effects of anticoincidence errors. A unique start code is allocated to each of the data services prior to transmitting the video signal. The video signal is separated into the separate data services without field or line windowing. Every pair of biphase elements occurring after the start code is checked for anticoincidence errors, and all wanted bits are stored in a buffer memory. The wanted bits are transferred from the buffer memory to an output memory only when no anticoincidence error has occurred between the start code and the last wanted bit.

Abstract: In a keyboard housing a housing top with a key pad and a housing bottom with support legs wherein the housing includes a support mat and a multi-layer contact foil set arranged underneath the key pad to be actuated thereby, a metal plate is embedded in a recess formed in the housing bottom below the contact foil set so as to increase weight and rigidity of the housing without the need for special molded housing reinforcement structures, the housing bottom, however, having U-shaped reinforcement web structures with bearing studs at their base areas near the housing bottom and housing legs with bearing holes receiving the bearing studs so as to be pivotally supported thereby, the housing legs having locking grooves and the housing bottom having, between the web structures, engagement tongues with locking ribs for engagement with the locking grooves in the housing legs.

Abstract: An improved coating for heat resistant substrates is an aqueous dispersion of polymers prepared by polymerization of olefinically unsaturated monomers in an aqueous medium in the presence of radical formers and emulsifiers, wherein the emulsifiers are polyisocyanate addition products having a molecular weight below 20,000 and containing from 5 to 1000 milliequivalents of anionic structures corresponding to the following formula--NH--CO--N.sup..crclbar. --C.tbd.Nincorporated therein per 100 g of solids content.

Abstract: Activator formulations which contain copolymers of (meth)acrylonitrile, styrenes, acrylates and/or unsaturated acids as binders are excellently suitable for preparing nonmetallic substrate surfaces for electroless metallization.The metal deposits produced are notable for good bond strength.

Abstract: Anhydride-group- or carboxyl-group-containing graft copolymers of vinyl esters and other suitable monomers on polysaccharide esters of (A) a polysaccharide ester of aliphatic C.sub.1 -C.sub.5 -mono-carboxylic acids as the graft substrate and (B) a grafted-on monomer mixture of (a) a vinyl ester of a C.sub.1 -C.sub.18 -monocarboxylic acid and (b) maleic acid anhydride and/or semiesters of maleic acid and/or fumaric acid with aliphatic C.sub.1 -C.sub.14 -monoalcohols, the ratio by weight of (A) to (B) being from 1:0.1 to 1:2 and the molar ratio of (a) to (b) being from 1:0.5 to 1:3, and a process for producing these graft copolymers.

Abstract: A process for the production of ethylene graft copolymers containing anhydride or carboxyl groups in homogeneous or heterogeneous phase in tert.-butanol or methylene chloride wherein (A) from 5 to 70% by weight of a monomer mixture of: (a) from 10 to 80% by weight of a vinyl ester of an aliphatic C.sub.1 -C.sub.18 -monocarboxylic acid; and (b) from 90 to 30% by weight of maleic acid anhydride and/or its C.sub.1 -C.sub.20 -alkyl semiesters; are radically polymerized in the presence of (B) from 95 to 30% by weight of an ethylene homopolymer or an ethylene/vinyl ester copolymer as the graft substrate.

Abstract: A television test line signal generator comprising a read-only memory which is read under the control of a clocked counting circuit, memory outputs being connected via a clocked buffer store to a digital-to-analogue converter, which is followed by a signal filter. The information in the read-only memory is programmed versus signal distortions following thereafter.

Abstract: An azo di-isobutyric acid-(N,N'-hydroxyalkyl)-amidine corresponding to the formula (I): ##STR1## in which R and R', which may be the same or different, represent linear or branched alkylene radicals containing from 2 to 4 carbon atoms, andX represents R'-OH or H.They may be produced by reacting an azo-di-isobutyric acid iminoalkyl ether containing from 1 to 4 carbon atoms in the alkyl group with at least one mono-alkanolamine containing from 2 to 4 carbon atoms or with a mixture of at least one monoalkanolamine and at least one dialkanolamine each containing from 2 to 4 carbon atoms in an alkanol radical, the molar ratio of monoalkanolamines to dialkanolamines in the mixture amounting to substantially 1:1, in substantially equivalent quantitative ratios at a temperature in the range of from 0.degree. to 50.degree. C. The amidines may be used as polymerization initiators, as cross-linking agents and as blowing agents in the production of foams.

Abstract: Dispersions suitable for the manufacture of moulding compositions which can be cured with low shrinkage to give mouldings with excellent surfaces can be obtained by the addition of finely divided ethylene copolymers manufactured in aqueous emulsion to unsaturated polyester resins.

Abstract: Pourable and pumpable, storage-stable organic dispersions which can be cured with little shrinkage comprising unsaturated polyesters, copolymerizable vinyl monomers, ethylene vinyl ester copolymers and optionally dispersing agents.