Patent · US Active

Disc signature for disc authentication

US7773495B2 · kind B2 · utility

2Cited by

1References

11Claims

0Family size

Assignee

SONY DADC AUSTRIA AG · AT

Inventors

Peter Meerwald · Elsbethen, AT
Andreas Winter · Feldkirch, AT
Oliver Kubera · Salzburg, AT
Gunther Kattner · Salzburg, AT
Harald Gabl · Linz, AT

Key dates

Filing date	Dec 12, 2005
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Nov 7, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG11B20/00086
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

The invention relates to a memory authentication method based on a pattern of storage areas of said memory that have altered latencies that are respectively altered such that the respective alteration of the latency of a storage area lies within a measurement noise of latency measurements in respect to the standard latency of said storage area when the measurement is performed with a reading device for accessing said record medium. The verification is then performed by a correlation of the latencies of the altered storage areas with a key used to alter the storage areas.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.