Data transmission/receiving device having parallel/serial and se

Details Data transmission/receiving device having parallel/serial and se Data transmission/receiving device having parallel/serial and se

1980-03-27

1983-06-14

Zache, Raulfe B.

Boots, shoes, and leggings

G06F 1516

Patent

active

043886833

ABSTRACT:
In a data transmitting/receiving device having parallel/serial and serial/parallel character conversion, particularly for data exchange between communicating data processing systems, and being arranged between a local data processing system and a data modem terminating a data communication line for the purpose of controlling data transmission and/or reception procedures and containing a procedure store, and in which a random access storage is provided as a data buffer for intercepting data jams is provided along with an interrupt control for interrupting processing operations in a microprocessor in respect of higher processing priority, and in which a timer is provided for setting optimum transmission speed, first and second modem connection lines are provided and data messages to be transmitted are converted bit-oriented or character-oriented by the microprocessor from data groups supplied thereto by means of corresponding input switching commands. In addition, the optional transmission of bit-oriented data messages according to the synchronous data link control (SDLC) method or according to the high-level data link control (HDLC) method is provided.

REFERENCES:
patent: 4093981 (1978-06-01), McAllister et al.
patent: 4225919 (1980-09-01), Kyu et al.
"Interfacing the SAB8080 with Other Microcomputer Devices", Microprocessor Devices Data Book 1976/77, Siemens AG, pp. 63-79.

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