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:
Dec. 28, 1999
Filed:
Mar. 31, 1998
Justin J Koller, Westboro, MA (US);
Nick Horgan, Marlboro, MA (US);
Bruce Buch, Westboro, MA (US);
Diana Langer, Northborough, MA (US);
Timothy Proch, Shrewsbury, MA (US);
Quantum Corporation, Milpitas, CA (US);
Abstract
A method of data transfer in a data processing system having at least one source buffer and at least one destination buffer. The source buffer includes a plurality of data blocks, each data block having an address and being for storage of data including an identifier uniquely identifying that data block. The destination buffer includes a plurality of data blocks corresponding to the data blocks of the source buffer, each destination block having an address and being for storage of data. Each source block identifier is a function of a corresponding destination block address. Transferring data from the source buffer to the destination buffer includes: (a) obtaining the address of a data block in the destination buffer to transfer data into; (b) obtaining the address of a corresponding data block in the source buffer to transfer data from; and (c) checking the integrity of said addresses before data transfer, including: (i) retrieving the source block identifier in the source block via the source block address; (ii) generating an expected identifier value for the source block from the address of the destination block via said function relation between the source block identifier and the destination block address; (iii) comparing the expected identifier value with the retrieved identifier value; and (iv) if there is a mismatch, signaling an error condition representing corruption of one or more of the source block and the destination block addresses.