Abstract not available for EP0087795 Abstract of corresponding document: US4477890 Apparatus for generating a map of detectable characteristics of a disc. A scanning signal display device has a detector coupled to the intensity input thereof. The detector detects the characteristics at a location on the disc which is scanned in a spiral pattern and provides a signal representative of the detected characteristics to the display device. A signal is generated and provided to the drive inputs of the display device to cause the trace of the device to follow a spiral pattern corresponding to the scan pattern of the predetermined location.
https://app.acclaimip.com/pdf/Iy2w5tfVxgrvLbCDMtXGBoRa070RoRhEWgTmFiI/EP0087795B1
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