Method and apparatus for cutting information into a record carrier
US4538256A · kind A · utility
0Cited by
8References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1982 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Nov 16, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B3/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for producing a mechanically reproducible recording in a metal disk record by operating an electrically excited cutting stylus to cut a modulated groove in the record, orienting the cutting stylus to be driven at a tracking angle of less than 5.degree., and electronically compensating recording distortions caused by this tracking angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.