Data recorder and method of operation
US5144501A · kind A · utility
4Cited by
6References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 8, 1991 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | Aug 8, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/913
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In this invention, a predetermined amount of data is given as one frame, and data having a predetermined format is recorded for each frame. A first area recording main data and a second area recording sub data are formed in each frame. Plural types of units each consisting of a plurality of frames are set, and a number of first units from a leading end of a recording medium and the numbers of other units from the leading end of the recording medium to a trailing end of the first units are recorded in the second area of a frame constituting the unit including the trailing end, thus facilitating a high-speed search operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.