EMPFANGS- UND SENDEMECHANISMEN FUER DIE LEITUNGSABTASTER EINER UEBERTRAGUNGSSTEUERUNG.

摘要

A line interface receives information frames at a high line speed and the frame bytes are stored at addresses defined by write pointers saved in two write registers. Short frames are constructed fromthe frames received on the high speed line and each comprises a fixed number of frame bytes of which the storage locations in the store are defined by the write printer values. A bus interface receiver provides a scanner data bus and control lines for response to a received command from the central controller to output short constructed frames from the scanner and to sen the fixed number of frame bytes to the central controller. The write printer values in the short frames are prevented from being sent to the central controller and are provided to the two read registers.