Cue signal detection circuit of magnetic recording and reproducing device
US6141171A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 28, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Apr 28, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cue signal detection circuit including a CTL head for reading a reproduction control signal recorded on a magnetic tape, an amplification circuit for converting a reproduction control signal into a digital signal, a filter unit for converting a digital signal into an analog voltage corresponding to a duty ratio of the signal, a frequency-dividing circuit for generating a timing signal in accordance with the operation of a capstan motor, and an analog-to-digital conversion circuit and a determination circuit for taking in a voltage value of a reproduction control signal converted into an analog voltage in response to a timing signal to detect a cue signal from among reproduction control signals based on the taken in voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.