Storage medium and apparatus and method of recording and reproducing encoded data thereto and therefrom
US6788881B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1999 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Dec 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8227
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A writable storage medium has a first storage area divided into a plurality of sectors having the same data capacity and a second storage area. The first storage area stores at least encoded moving picture data and encoded audio data. The second storage area stores at least first information indicating whether the audio data is silence data, second information indicating an encoding method by which the audio data has been encoded at a constant bit rate and third information indicating the number of audio channels related to the audio data. The first and second storage areas may further store encoded bitmap video data and data identification information indicating whether the bitmap video data is invisible data, respectively. The first information is detected to determine whether the first audio data is silence data. If the first audio data is judged as the silence data, second audio data to be after-recorded is encoded by the encoding method the same as the method for the first audio data at the bit rate the same as that for the first audio data in response to the second and third information. The encoded second audio data is written over the first audio data. The data identificati…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.