Optical data storage disc
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 19, 1995
Grant Date -
N/A
app pub date -
Jan 21, 1994
filing date -
Jun 13, 1991
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A process for producing an optical data storage disc (e.g., a compact disc) carrying a digital recording and also carries a holographic image is disclosed. The holographic recording occupies an area (14) separate from the area (12) occupied by the digital recording, for example, the holographic recording may be positioned in an annular area encircling the central area occupied by the digital recording.
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