Region delimited coded data having unique length digital signature
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 14, 2010
Issued Date -
N/A
app pub date -
Nov 25, 2008
filing date -
May 18, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Coded data for disposal on or in a surface is delimited into a number of regions. The coded data encodes an identity of the region in which the coded data is disposed, and a signature formed from at least part of the identity of the region and a substantially random number. The coded data is arranged in accordance with a layout having n-fold rotational symmetry, where n is at least two. The layout including n sub-layouts rotated 1/n revolutions apart about a centre of rotation, at least one sub-layout including rotation-indicating data that distinguishes that sub-layout from other sub-layouts. The random number serves as a padding to pad out the identity to a length unique to the identity.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully