Method for recording images in a digital video cassette recorder
US5587805A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1993 |
| Grant date | Dec 24, 1996 |
| Priority date | — |
| Expiry date | Nov 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/783
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for recording images in a digital video cassette recorder, which utilizes high compressibility, and which is advantageous in an interframe coding method, includes steps for regularly and repeatedly recording low-frequency data of an intraframe corresponding to the outline of a picture in a group of pictures (GOP) unit and providing remaining data recording area in an end area of each GOP unit to permit data quantity fixation and in order to perform trick play operations. Furthermore, the method orders sub-images of a picture regularly or irregularly while recording the low-frequency data of all the sub-images which belong to a same cluster in low-frequency data recording area of each sub-image, to thereby raise picture quality during trick play.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.