摘要:
A digital communication device includes: a modulator having encoding means for converting two-dimensional digital information signal into a three-dimensional signal and phase modulation means for modifying the carrier phase in according to the three-dimensional signal; and a demodulator having phase demodulation means for detecting information on the three-dimensional signal from the received phase-modulated wave and demodulation means for deciding the two-dimensional digital information from the information on the three-dimensional signal. The digital communication device has a bit error ratio and an occupied radio band width equivalent to a digital communication device using the conventional QPSK or π /4 shift QPSK and the error correction method and greatly improves the amplitude fluctuation. Moreover, the digital communication device can transmit a signal with a narrower occupied frequency band width while maintaining the same constant envelope characteristic as the GMSK using the conventional error correction code.
摘要:
A black perylene pigment obtained by burning at least one compound selected among diimide derivatives of perylenetetracarboxylic acid and diimide derivatives of perylenediiminodicarboxylic acid under vacuum or in an inert gas atmosphere at 200 to 600°C. It is excellent not only in blackness but in heat resistance and weatherability, has high resistance, and is highly safe.
摘要:
A black perylene-based pigment produced by calcining at least one compound selected from the group consisting of diimide derivatives of perylene tetracarboxylic acid and diimide derivatives of perylene diiminodicarboxylic acid, at a temperature of 200 to 600°C in vacuum or in an inert gas atmosphere, exhibits an excellent blackness, an excellent heat resistance and an excellent weather fastness as well as a high resistance and a high safety.
摘要翻译:通过燃烧至少一种包含苝四羧酸的二酰亚胺衍生物和/或苝二亚胺二羧酸的二酰亚胺衍生物的化合物获得的黑色苝颜料是新的。 黑色颜料通过在真空下或在惰性气体气氛中在200-600℃下燃烧化合物如苝四羧酸的二酰亚胺衍生物和/或苝二亚胺二羧酸的二酰亚胺衍生物来获得。 苝四羧酸和苝二亚胺二羧酸的二酰亚胺衍生物由式(I),(II)或(III)表示。 R 1>,R 2>丁基,苯乙基,甲氧基乙基或4-甲氧基苯基甲基(R 1和R 2)相同)。 R 3>,R 4>亚苯基,烷基亚苯基,烷氧基亚苯基,羟基苯基(sic)卤代亚苯基,吡啶二基,烷基吡啶二基,烷氧基吡啶二基,卤代吡啶二基或萘二基 组。