A Rewritable Optical Disk with a New Addressing Method for Increasing Recording Density and Random Accessibility.

We developed a rewritable optical disk format with a new addressing method using phase-modulated wobble signals in a land/groove recording structure. The disk format is able to increase the recording density compared with that of the digital versatile disk-random access memory (DVD-RAM) standard by reducing the redundancy due to header fields, and to improve random accessibility compared with that of the digital versatile disk-rewritable (DVD+RW) standard on account of a frame addressing with 104 wobble signals.