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. 22, 1994
Filed:
Feb. 14, 1992
Al Youngerth, Boise, ID (US);
Extended Systems, Inc., Boise, ID (US);
Abstract
The present invention provides a dedicated memory circuit which supports the generation of parity data in connection with the storing of data. This improved memory circuit allows the parity generation to be done remotely from the CPU while consuming less time. The memory array is provided with its data output being connected to combinational logic. Another input to combinational logic is for external data. The data already in the array and the new data are combined to the combinational logic, preferably an exclusive-or arrangement, to produce the parity data which is then returned to the memory array. A latch is provided between the exclusive-or logic and the memory array data lines to allow isolation of the data during the two cycles of the read out of the array and the right back to the array after the exclusive-or.