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:
May. 18, 1993
Filed:
Jul. 31, 1991
Craig A Walrath, Easley, SC (US);
Gene F Young, Lexington, SC (US);
Terry S Strickland, Greenville, SC (US);
Michael R Hilley, Belton, SC (US);
NCR Corporation, Dayton, OH (US);
Abstract
In a computer, when a block of data is written to memory, it is common to attach a control word to the data. The control word is placed at a pre-arranged location, generally separate from the data. The control word contains important information about the data, such as starting address, length, etc. The presence of the control word indicates that the data is valid. Sometimes, for various reasons, the control word is written before all the data is written. This premature availability of the control word gives false information: the data is not yet completely written, yet the presence of the control word indicates otherwise. The invention prevents such a problem by preventing premature writing of the control word.