Pseudo-synchronized data communication system
AssigneeWestinghouse Electric Corp.
InventorsMark E. Ackman, Wayne L. Dufek, Charles C. McCarthy, Edward E. Kopicky
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Abstract
A system wherein a plurality of remote stations, in response to a request from a primary terminal, will transmit requested data to the primary terminal and to a secondary terminal. The secondary terminal is operable to receive and process the data transmitted in synchronism with the requests from the primary, and without any synchronizing information between the primary and secondary terminals. This is accomplished with the provision of data processing means in the two terminals which have identical memory maps of the sequencing operation.
Claims5
A data communication system comprising:
- (A) a plurality of remote stations each including means for gathering and storing data;
- (B) a primary terminal having a plurality of two-way data communication links and being in two-way data communication with said remote stations, including means for addressing said remote stations in a predetermined sequence and means for requesting and receiving stored data from said addressed remote stations thru said two-way data communication links;
- (C) a secondary terminal in one-way data communication with said remote stations and including a plurality of one-way-only data communication links each for receiving stored data transmitted by a respective of said addressed remote stations;
- (D) said secondary terminal including data utilization means coupled to the one-way data communication links;
- (E) said secondary terminal additionally including gating means for each said one-way-only data link and operable, when enabled, to gate received data to said data utilization means;
- (F) said secondary terminal further including means for enabling a selected one of said gating means and, after receipt of data by said selected gating means, enabling the remainder of said gating means in said same predetermined sequence in which said remote stations are addressed by said primary terminal.
Dependencies are inferred from the claim text.