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:
Feb. 02, 1988
Filed:
Oct. 01, 1985
Michael J Iacoponi, Indian Harbor Beach, FL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
An apparatus and method for use in a communications system to modify a check word associated with a data word to retain the integrity of the former when the latter has been changed at a node in the system. When binary symbols are used, the received data word and the modified data word are combined on a serial bit-by-bit basis in a first exclusive OR gate. The result is encoded using the same coding scheme as used with the received data and check words. The encoded signal and the received check word are provided as an input to a second exclusive OR gate on a bit-by-bit basis. The signal produced by the second exclusive OR gate is the modified check word; the modified check word is then appended to the modified data word for transmission over the network. The entire process can be carried out on a bit-by-bit basis, allowing information to be relayed through a network node with minimal delay.