| 摘要 |
FIELD: information coding and transmission, electron information devices for recording, broadcasting and television. SUBSTANCE: coder generates coding function in the form of periodic pulses of nonrectangular shape. Analog signal is multiplied by multiplier bigger than zero, is summed up with bias constant to obtain complied signal. In agreement with the first variant of invention complied signals are summed up with coding pulses to obtain summary signal. Summary signal is sent into comparator which compares it with standard constant. In accordance with second variant complied signal and coding pulses are sent into comparator which compares them. In both cases rectangular pulses are generated. Rectangular pulses of their derivatives are directed together with synchronization pulses into decoder which generates decoding function equal to product of proportionality coefficient by coding function bigger than zero, time coordinates of leading and/or trailing edges of rectangular pulses are substituted into decoding function for arguments to obtain values of decoding function. Values of decoding function according to first variant are subtracted from product of proportionality coefficient by difference of standard constant and bias constant. Product of proportionality coefficient by bias constant is subtracted from values of decoding function in agreement with second variant. EFFECT: enhanced stability. |
