Formats For 5-1/4" Optical Disk Systems

Chris Steenbergen

doi:10.1117/12.936843

14 January 1987 Formats For 5-1/4" Optical Disk Systems

Chris Steenbergen

Proceedings Volume 0695, Optical Mass Data Storage II; (1987) https://doi.org/10.1117/12.936843
Event: 30th Annual Technical Symposium, 1986, San Diego, United States

Abstract

This discussion concerns the requirements for a format used in digital optical recording, specifically the 5-1/4" form factor. An implementation, based upon a fully sampled approach, is described in detail. Format requirements The function of a format is to provide a framework for the operation of a media-drive combination. In essence it should guide the drive hardware and firmware through the necessary steps to store and retrieve data. In the case of optical recording the following functions are required: . focussing (on the information carrier) . tracking (along the data tracks) . accessing (across the data tracks) . synchronization (to the pre- and self-written data) . modulation (of the data, i.e., encoding/decoding) . sectorization (for logical retrieval) The last function includes the features of block size, error correction and block (sector) header structure, and is determined by (external) requirements such as data transfer, allowed data error rate and expected media error rate. Sectorization will not be addressed here, because the emphasis will be focused on the hardware related servo (first four items) and modulation-functions.

Citation Download Citation

Chris Steenbergen "Formats For 5-1/4" Optical Disk Systems", Proc. SPIE 0695, Optical Mass Data Storage II, (14 January 1987); https://doi.org/10.1117/12.936843

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