Optical disk and optical recording and reproducing apparatus
US5506825A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1994 |
| Grant date | Apr 9, 1996 |
| Priority date | — |
| Expiry date | Aug 30, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical disk is divided in a radial direction into an inner area and an outer area each having formed therein spiral or concentric tracks each having a sector which has an address area, an audio signal recording area and a video signal recording area. A specific unit of audio signal and a specific unit of video signal are divided into a plurality of audio blocks and a plurality of video blocks, respectively. Each of the audio blocks and the video blocks are separated into a first group and a second group. The audio blocks and video blocks in the first group are respectively recorded into the audio signal recording area and the video signal recording area in a sector in the inner area, and the audio blocks and video blocks in the second group are respectively recorded into the audio signal recording area and the video signal recording area in a sector in the outer area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.