Registers – Records – Particular code pattern
Reexamination Certificate
2005-05-04
2010-12-28
Kim, Ahshik (Department: 2876)
Registers
Records
Particular code pattern
C235S454000
Reexamination Certificate
active
07857231
ABSTRACT:
A rotatable disc comprises a first zone in which a plurality of features, e.g. optical filters, are located at uniform angles from each other with respect to an axis of rotation of the disc and a second annular zone comprising sets of adjacent marks of a first type and of a second type. Each set may have a same total circumferential length, but the marks of a given type may have at least two different total circumferential lengths within a set of marks, or may be distinguishable by the relative position of marks of the different type to each other. The adjacent marks of the first and the second type may also form a code pattern that can be used for identifying the features. A method for adjusting the rotational orientation of the disc based on detecting the widths of the sectors is described.
REFERENCES:
patent: 5396063 (1995-03-01), Ito et al.
patent: 5648869 (1997-07-01), Ikoh
patent: 6323995 (2001-11-01), Takahama et al.
patent: 7057162 (2006-06-01), Rentzsch
patent: 2004/0061861 (2004-04-01), Rentzsch
patent: 0089724 (1983-09-01), None
patent: 1403672 (2004-03-01), None
patent: 63-269139 (1988-11-01), None
patent: 2000/266986 (2000-09-01), None
Patent Abstracts of Japan, vol. 2000, No. 12, Jan. 3, 2001 & JP 2000/266986 (See Ref. AF).
Patent Abstracts of Japan, vol. 0130, No. 87, Feb. 28, 1989 & JP 63-269139 (See Ref. AG).
Search Report Dated Jul. 28, 2005.
Damstra Nicolaas Johannes
Kuppens Chris
Roctus Jerry
Rotte Jeroen
Vissers Peter
Kim Ahshik
Levy Robert B.
Shedd Robert D.
Thomson Licensing
Villabon Jorge Tony
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