Disc recording provided with legible matter
AssigneeTED Bildplatten Aktiengesellschaft AEG-Telefunken-Teldec
InventorsHeinz Borchard, Gunter Grottker, Peter Thun
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Abstract
In the production of disc recordings, the label portion therefor is formed by tracing a pattern of essentially circular grooves or arrays of dots and groove or dot-free areas in the location of the label portion, the grooved areas contrasting visually with the groove-free areas and the pattern being such that one type of area, preferably the groove-free areas, forms the legible characters and patterns to appear in the label portion.
Claims4
A record disc provided with a groove containing stored signals and with a nominally flat surface portion separate from the region containing stored signals and constituting a label portion carrying readable information, the improvement wherein the surface of said disc is provided, in said label portion, with a series of substantially circular, discontinuous grooves, with the discontinuities of all of the grooves forming a pattern constituting the readable information.
Dependencies are inferred from the claim text.