A disc loading mechanism for an optical disc drive.

An optical disc drive capable of attaining a uniform and sufficient optical disc holding force.

The optical head and associated control means may be embodied in a optical drive the size of standard disk drives.

The invention relates to an optical disc drive that comprises rotating means, defining a rotating axis for an optical disc, and an optical scanning device, for scanning said optical disc with a light beam.

The optical pickup mechanism should be positioned in an optical storage drive such that an optical storage disc can be placed in between the two lens element of the optical pipe.

A tool for cleaning a laser lens of an optical disc drive unit.

An optical disk unit capable of constantly moving a focal point up to an extent of permitting focus control.

Various embodiments of the present invention are directed to a compact, portable, external optical disc drives (100, 200, 400).

Usually, for instance in an optical disc drive, the light generator is implemented by a laser (Ls).

The optical disk cartridge is provided with a plurality of pressurization members and a plurality of partition plate rotation mechanisms.

The tool includes a rigid, round member which is constructed and arranged for insertion into the receiving area of an optical disc drive unit.

An anti-collision method for an optical disc unit has a focus control loop (FC) with a focus actuator (2).

A digital signal reproducer comprising a Viterbi decoder, and being applicable to a video tape recorder and an optical disc drive.

An optical disk unit and an aberration correcting method used for this, which require no specific pattern for correcting a spherical aberration.

An optical drive to transfer data between a data carrier (10) and a data communication circuit is disclosed.