Digital information signal reproducing apparatus for reproducing a digital audio signal at a reproducing speed different from the recording speed
US5239430A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1990 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Sep 25, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a digital information signal reproducing apparatus in which a first digital audio signal and a second digital audio signal having the same contents are recorded on two oblique tracks which are close to each other on a record tape while the latter is run at a normal speed, and in which the first and second digital audio signals are reproduced from the tape by plural rotary heads; a head position controller is operative to control a scanning position of each of the rotary heads so that the latter scan the tracks during variable speed reproduction when the tape is run at a speed different from the normal speed, and to cause the heads to periodically jump over a plurality of the tracks; a detector detects when the rotary heads controlled by the head position controller jump over the plurality of tracks; and a processor responsive to the detector for switching the first digital audio signal and the second digital audio signal, as in a cross-fading operation, for a predetermined period when a jump is detected and selecting one of the first digital audio signal and the second digital audio signal depending on an error state in a period other than such predetermined period, thereby ensu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.