The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1991
Filed:
Apr. 11, 1990
John L Meagher, Fairfax, VA (US);
Digital Access Corporation, Reston, VA (US);
Abstract
A general purpose communications processor for communicating data between an asynchronous data terminal and a synchronous data communication facility, includes (I) a transmit module, having (a) a transmit processor, (b) an input serial communication controller, for receiving a serial asynchronous data input from the data terminal, and stripping start and stop bits from each received byte, (c) a transmit buffer, operatively connected to the controller, for temporarily storing the data, (d) an adder for adding at least a control byte to the data, and (e) an output serial communications controller for outputting the data and control byte to the synchronous data communication facility; and (II) a receive module, having (a) a receive processor, (b) a second input serial communications controller for receiving a synchronous input from the synchronous data communication facility, (c) a receive buffer, operatively connected to the second input controller, for temporarily storing the incoming synchronous data bytes, (d) a framing circuit for adding start and stop bits to the synchronous data bytes, and (e) a second output serial communications controller for outputting the data to the asynchronous data terminal.