专利名称：DEVICE FOR READING OR WRITING ON
OPTICAL RECORDING MEDIA WITH DISKTYPE RECOGNITION MEANS
发明人：GRIMM, MICHAEL申请号：EP98947490.3申请日：19980831公开号：EP1019909B1公开日：20020130
摘要：A device for reading or writing on optical recording media (4) with disk typerecognition means has an optical scanning means (5) and a focus regulating circuit (5, 28).The object of the invention is to provide a device of this type which can reliably recognisein a short time the type (Tn) of the recording medium (4) inserted into the device.Another object of the invention is to provide a corresponding process. These objects areattained in that the disk type recognition means comprise a mirror signal generator (13),a threshold value generator (12, 14), a counter (15) and an evaluation unit (16). Thedisclosed process is based on the utilisation of a mirror-signal (MIRD) value of the devicefor disk type recognition.
申请人：DEUTSCHE THOMSON-BRANDT GMBH,THOMSON BRANDTGMBH,DEUTSCHE THOMSON-BRANDT GMBH
地址：DE
国籍：DE
代理机构：Thies, Stephan (DE)
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