Signal processing apparatus and method wherein control signals and power signals are superimposed
US6476993B1 · kind B1 · utility
7Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jun 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0018
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A compact rotary transformer is disclosed. In the structure of the rotary transformer, a timing-signal producing unit detects a control signal superimposed on an electric power signal output from a power transmission channel of the rotary transformer to produce a timing signal. A head-switching-signal generating unit uses the timing signal to generate a switching signal for performing switching between reproducing heads so that one of the reproducing heads is selected by a switch. A reproduction channel of the rotary transformer outputs a reproducing signal via the switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.