Differences

This shows you the differences between two versions of the page.

--- extras:glossary [2026/09/22 00:20] – added OMDR hbm
+++ extras:glossary [2026/10/18 20:11] (current) – added CAV and CLV hbm
@@ Line 1: / Line 1: @@
 ====== Glossary of Terms ======
+===== Ablation =====
+  - **Optical Ablation**. A permanent recording mechanism used in early [[extras:glossary#worm|WORM]] optical disk systems, where data is written by physically removing or altering the recording layer of the media.
+===== CAV =====
+  - **Constant Angular Velocity**. A sector arrangement format in which data sectors are positioned at fixed angular intervals around a disk, maintaining a constant rotational speed. Sectors typically have lower linear data density on tracks farther from the center.
+  * //See also:// [[https://web.archive.org/web/20250126030035/https://telcontar.net/Misc/maths/CAVvsCLV.php|Telcontar — CAV vs CLV capacity]]
+===== CLV =====
+  - **Constant Linear Velocity**. A sector arrangement format in which the disk's rotational speed varies with the read/write head's position to maintain a constant linear velocity. Data is typically recorded at a consistent linear density, maintaining approximately the same bit spacing along the track.
+  * //See also:// [[https://web.archive.org/web/20250126030035/https://telcontar.net/Misc/maths/CAVvsCLV.php|Telcontar — CAV vs CLV capacity]]
 ===== Disc =====
-A (usually) flat, circular recording medium whose data-bearing surface is exposed and is not enclosed within a protective housing; typically used to refer to optical recording media such as CDs, DVDs, LaserDiscs, the magnetic media in Floppy Disks, etc.
+  - A (usually) flat, circular recording medium whose data-bearing surface is exposed and not permanently enclosed within a protective housing.
 ===== Disk =====
-A recording medium where a [[glossary#disc|disc]] is enclosed — either permanently or not — within a protective housing, cartridge, casing, or other external structure; the term may encompass magnetic, optical, magneto-optical, and other recording technologies.
+  - A recording medium where the data-bearing disc is completely enclosed — either permanently or removably — within a protective cartridge, casing, sleeve, or hard shell.
 ===== Disc-Based Enclosed Media (DBEM) =====
-Any of a number of data storage formats that consists of an optical disc enclosed in a protective cartridge.
+  - Any of a number of data storage formats that consist of an optical disc enclosed in a protective cartridge.
 ===== OMDR =====
-A proprietary magneto-optical disk format created and solely utilized by [[reference:manufacturers#pinnacle-micro|Pinnacle Micro]]((citation needed)).
+  - **Optical Memory Disk Recorder**. A professional class of high-capacity, magneto- optical recording systems and media used for digital data archiving, medical imaging, and broadcast video mastering.
+===== WORM =====
+  - **Write-Once, Read-Many**. A class of optical storage media where data can be written only a single time to a specific sector. Once recorded, the data becomes permanent, immutable, and cannot be overwritten, modified, or deleted.
+  * //See also:// [[extras:glossary#ablation|Ablation]]