Reproduction of information using a ring buffer with read and write pointers separated from each other by substantially half of the total ring buffer capacity
US6009231A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1997 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Oct 21, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/8042
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A data reproducing method and apparatus for providing special reproductions such as a reverse reproduction quickly when it is specified. In the data reproducing apparatus comprising a demodulator for demodulating data read out of a digital video disk by a pickup, a buffer for temporarily storing the demodulated data and a decoder for decoding the data read out of the buffer into original video signals, further included is a control circuit for controlling the buffer so that an unread data area and an already-read data area in the buffer take about half of the total memory capacity, respectively. As a result, the data necessary for reverse reproduction or the like is present in the buffer, allowing the special reproduction to run quickly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.