This document is the specification for an AV/C Disc subunit. The disc is a stand-alone piece of functionality separate from a media changer mechanism or any other subunit. The disc model supports various types of disc media. The model also supports subunits which are only disc players, or which are players and recorders.

The model and data structures used for the disc are consistent with those in the AV/C Digital interface Command Set General Specification version 3.0 and the enhancements to AV/C General Specification 3.0, version1.0.

This document describes the general AV/C Disc subunit model and command set; there are separate documents for each media type specification supported by the subunit model (e.g. MiniDisc, CD…).