Patent ID: 6243422
Filing Date: 2001-06-05
Classification: H03G,H04L

Abstract:
A waveform shaping equipment for generating and providind signal waveforms corresponding to packets having dummy data and using information data as an input, forming packets comprising the information data and dummy data, extracting at least a portion of the packets with the dummy data and successively forming patterns, and successively concatenating partial waveforms read out from a memory means based on the patterns;wherein, i) signals for indicating a start of the information data are starting signals, ii) signals for indicating the end of the information data are end signals, iii) predetermined periods between a start of a readout of the partial waveforms and an end of the readout of the partial waveforms are a spare sequence, iv) a period for reading out the partial waveforms excluding the spare sequence is an ordinary sequence, v) the memory means comprises sub memory means and main memory means, vi) the sub memory means stores the partial waveforms in the spare sequence, and vi) the main memory means stores the partial waveforms in the ordinary sequence, the waveform shaping equipment comprising:pattern generating means for i) forming the packets with the dummy data and ii) generating the patterns, andcontrol means for generating i) the dummy data, ii) input control signals for the pattern generating means, iii) output control signals a) switching a readout of the partial waveforms from the sub memory means to the main memory means a first specified time period after the starting signals are received, and b) switching the readout of the partial waveforms from the main memory means to the sub memory means a second specified time period after the end signals are received, and iv) readout signals, said readout signals control a readout of specific partial waveforms from the memory means,wherein, the dummy data and the input control signals are provided to the pattern generating means,the starting signals and the end signals are externally provided to the control means, and an output of the pattern generating means is provided to the control means, andthe output control signals and the readout signals are received by the main memory means and sub memory means, and the signal waveforms are output from the main memory means in the ordinary sequence, and the signal waveforms are output from the sub memory means in the spare sequence.