Title:
SERIAL DATA COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JPH01155741
Kind Code:
A
Abstract:
PURPOSE:To process lots of data communication in a short time by synchronizing the call data transmission of a communication equipment to be called with a variable speed clock and applying data transmission/reception synchronously with the fixed speed clock after the establishment of connection. CONSTITUTION:When a start bit on a network is detected, the logic circuit 16 of a communication equipment monitors the logic level of a synchronizing signal line 2 and a synchronizing signal subjected to wired logic is outputted to a synchronizing signal line 2 by the wired logic. When the signal is called by the address field, switches 12, 22 are switched to the position B to output the synchronizing signal of fixed speed and a data. Thus, the data is sent relating to the call of a communication packet in the communication between plural equipments, it is sent at a speed mated to all equipments on the network and after the end of call, the speed is changed over into the fixed synchronization and high speed communication is attained at optimum speed specific to the equipment.
Inventors:
KOMATSU YUJI
Application Number:
JP31357587A
Publication Date:
June 19, 1989
Filing Date:
December 11, 1987
Export Citation:
Assignee:
NEC CORP
International Classes:
H04L7/04; (IPC1-7): H04L7/04; H04L11/00
Attorney, Agent or Firm:
Uchihara Shin