Simple pulse position modulation channel/decoder
US5737140A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Jun 7, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10009
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic recording reproducing apparatus, a detecting and decoding circuit comprising: PA1 a first integrator having an input for receiving a pulse position modulated (PPM) encoded signal reproduced from magnetic media, and having an output; PA1 a second integrator having an input coupled to said output of said first integrator and having an output; PA1 a first comparator having a noninverting input connected to the output of said first comparator, an inverting input connected to ground, and an output; PA1 a reset pulse circuit having an input connected to the output of said first comparator and an output connected to a reset terminal of said second integrator; PA1 a second comparator having a noninverting input connected to the output of said second integrator, an inverting input connected to ground, and an output; and PA1 a D flip-flop, having a data input connected to the output of said second comparator, a clock input connected to the output of said reset pulse circuit, and an output which outputs a decoded data signal of said received PPM encoded signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.