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- Path: sparky!uunet!dtix!oasys!curt
- From: curt@oasys.dt.navy.mil (Curt Welch)
- Newsgroups: rec.audio
- Subject: Re: MiniDisc is here!
- Message-ID: <29089@oasys.dt.navy.mil>
- Date: 30 Dec 92 06:44:56 GMT
- References: <1992Dec17.150950.5126@lucpum.it.luc.edu> <DERAADT.92Dec27232721@newt.newt.cuc.ab.ca>
- Reply-To: curt@oasys.dt.navy.mil (Curt Welch)
- Organization: Carderock Division, NSWC, Bethesda, MD
- Lines: 13
-
- In rec.audio, deraadt@newt.cuc.ab.ca (Theo de Raadt) writes:
- >What is the actual geometry and spacing of the disk? Is it 72M or 200M
- >in size or what?
-
- What do you mean? What does 72M or 200M mean? The articles I have don't
- give any numbers like that. The only physical numbers they give is the
- shape of a "Pre-groove". It's 1.1 microns wide and is separated by a 0.5
- micron hill from the next "Pre-groove". The article isn't real clear
- about these "Pre-grooves" but I think they are grooves molded into
- recordable MDs that tell the drive where to write. This would mean
- that adjacent tracks are spaced 1.6 microns apart.
-
- Curt Welch
-