ENCODING AND DECODING DEVICE

PURPOSE:To provide an inexpensive communication device by decoding a silent state and an in-reception-training state into '1', and then decoding pulse presence into '0' and pulse absence into '1' after start flag detection. CONSTITUTION:An encoding part 14 receives a tr...

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Bibliographische Detailangaben
1. Verfasser:	SHINAGAWA KOUJI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRONIC CIRCUITRY CODE CONVERSION IN GENERAL CODING DECODING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	PURPOSE:To provide an inexpensive communication device by decoding a silent state and an in-reception-training state into '1', and then decoding pulse presence into '0' and pulse absence into '1' after start flag detection. CONSTITUTION:An encoding part 14 receives a transmission indication signal RS(=1) from a communication control processor 11, outputs alternate positive and negative pulses successively as a preamble part sent out prior to the transmission of a sent HDCL frame, and encodes the HDCL frame from its start flag to the end flag into a pattern wherein '0' corresponds to pulse presence and '1' corresponds to pulse absence. Then a decoding part 15 decodes a signal sent through a communication medium LAN, decodes the preamble part into a signal indicating '1' during reception when the burst frame signal arrives in the silent state, and decodes the frame after the start flag into '0' for pulse presence and '1' for pulse absence.