Title:
DELTA MODULATING METHOD
Document Type and Number:
Japanese Patent JPS5394758
Kind Code:
A
Abstract:
A data waveform modulates a carrier to produce a data-waveform-modulated input signal v, which is applied to the input of a delta-modulation transmitter of controllable quantization-step size. The delta-modulated output signal d of the transmitter is fed through a shift register, to the individual stages of which the inputs of a coincidence gate are connected. The output signal of the coincidence gate is transmitted through a narrowband filter tuned to a frequency fs equal to the symbol transmission rate of the data-waveform-modulated input signal v. The narrowband-filter output signal is utilized to control quantization step size.
Inventors:
RUUTOBUITSUHI KITSUTERU
DEIITAA SHIYUBUARUTSU
DEIITAA SHIYUBUARUTSU
Application Number:
JP15229677A
Publication Date:
August 19, 1978
Filing Date:
December 16, 1977
Export Citation:
Assignee:
TEKADE FELTEN & GUILLEAUME
International Classes:
H03M3/02; H04B14/06; (IPC1-7): H03K13/22