Loop-back circuit for testing a magnetic recording system with simultaneous read and write functions
US5479098A · kind A · utility
13Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1993 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording system, a loop-back test circuit provides a technique to test a magnetic recording head, a read circuit, and a write circuit to a read-write head, is sensed through the voltage generated at the head by the test current, such that a small voltage portion of the test signal is transferred through a resistor toga read circuit. The voltage portion is then filtered through a capacitor to form detectable peaks such that the read signal is generated with pulses corresponding to the peaks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.