Apparatus for reading from or writing to optical recording...

Details Apparatus for reading from or writing to optical recording... Apparatus for reading from or writing to optical recording...

2006-06-13

2006-06-13

Psitos, A M (Department: 2656)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Of record carrier

C369S053200

Reexamination Certificate

active

07061846

ABSTRACT:
A device for reading or writing on optical recording media with disk type recognition capability has an optical scanning device and a focus regulating circuit. The arrangement provides rapid and reliable recognition of the recording medium type inserted into the device. A further inventive aspect provides a corresponding process. These inventive aspects are attained by the disk type recognition capability which includes a mirror signal generator, a threshold value generator, a counter and an evaluation unit. The process is based on the utilization of a mirror-signal value of the device for disk type recognition.

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