Abstract: A conventional display system carried on a railroad train has the problem that it cannot distribute image signal to the cars of the train when image information output means mounted in a lead car breaks down.

Abstract: A combustion type waste gas treatment system capable of oxidatively decomposing a hazardous and combustible waste gas under heating efficiently with a structure which allows the waste gas to mix with an auxiliary burning gas efficiently without the occurrence of backfire in a waste gas inlet pipe. The combustion type waste gas treatment system has a burner part and a combustion chamber. Combustion flames are formed to extend from the burner part toward the combustion chamber, and a combustible waste gas is introduced into the combustion frames from waste gas inlet pipes thereby oxidatively decomposing the waste gas. A flow velocity accelerating device makes the flow velocity of the combustible waste gas flowing through the waste gas inlet pipe higher than the burning velocity of the combustible waste gas.

Abstract: A video signal processing apparatus, video signal recording/reproduction apparatus, and method therefor, perform arithmetic operations upon an input video signal and the input signal delayed by a predetermined amount of time. A memory stores the input signal for the predetermined amount of time in order to produce the delayed input video signal. A controller controls the memory to store the input video signal for the predetermined amount of time based on a main synchronization signal. A first synchronization signal is produced by separating a synchronizing signal from the input video signal. A second synchronization signal is generated based on the first synchronization signal. During operation, a switching unit supplies the first synchronization signal to the controller as the main synchronization signal until the second synchronization signal becomes synchronized with the first synchronization signal.

Abstract: In a YC separating filter, a first horizontal chrominance extraction filter extracts frequency components corresponding to components of a color subcarrier in a horizontal direction to produce a first chrominance signal, a vertical chrominance extraction filter extracts frequency components corresponding to components of a color subcarrier in a vertical direction to produce a second chrominance signal, a horizontal and vertical chrominance extraction filter extracts frequency components corresponding to components of a color subcarrier in horizontal and vertical directions to produce a third chrominance signal, a first selector selects one of the first, second and third chrominance signals, a second horizontal chrominance extraction filter having a narrower bandwidth than the first horizontal chrominance extraction filter is provided to receive the selected chrominance signal, and a second selector selects the output of the second horizontal chrominance extraction filter when the first selector selects either