Apparatus having a high-speed search capability for reproducing signals recorded on a tape
US4956730A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1987 |
| Grant date | Sep 11, 1990 |
| Priority date | — |
| Expiry date | Jul 21, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/1875
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for reproducing signals recorded in slanting tracks on a recording tape including tape position information recorded at a specified area on each track apparatus has a tape speed setting circuit for setting a plurality of tape speeds, and a cylinder speed setting circuit for setting a rotational speed of a rotary cylinder such that the track direction speed component of a reproducing head mounted on the rotary cylinder is kept constant. A tape running control circuit controls a reel drive circuit so that the tape runs at a speed set by the tape speed setting circuit. A cylinder control circuit controls the rotary cylinder so that the rotary cylinder rotates at a speed set by the cylinder speed setting circuit. In a transition state from a normal reproduction mode to a high speed search mode, the tape speed setting circuit changes the tape speed in a step-wise fashion so that the deviation of the track direction speed component of the head in each step of tape speed change is within a range in which the tape position information is correctly read.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.