13 August 1992 Characteristics of optical read-only media with PWM recording
Author Affiliations +
Proceedings Volume 1663, Optical Data Storage; (1992) https://doi.org/10.1117/12.137560
Event: Optical Data Storage Topical Meeting, 1992, San Jose, CA, United States
Characteristics of optical read-only media (O-ROM) having both grooves for tracking and pits that represent data by length were studied. Servo signals were observed over a wide bandwidth up to the data clock frequency and, in addition, the surface structures of the disks were observed. These observations showed that servo signals depend not only on the depth of grooves but also on that of the embossed data pits. Optimizing the depths of pits and grooves based on the results of pit density dependency of servo signals is necessary to ensure good characteristics of pit and groove signals.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hideharu Takeshima, Hideharu Takeshima, Masae Kubo, Masae Kubo, Yoshimitsu Kobayashi, Yoshimitsu Kobayashi, Takeo Nakamura, Takeo Nakamura, Akira Nakajima, Akira Nakajima, } "Characteristics of optical read-only media with PWM recording", Proc. SPIE 1663, Optical Data Storage, (13 August 1992); doi: 10.1117/12.137560; https://doi.org/10.1117/12.137560


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