Carrier generations facility for a digital MPX-signal demodulation micronas intermetall GMBH
US6351631B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1999 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Feb 12, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Carrier generation facility for a switchable digital demodulator (D) of digital MPX signals (mpx1) with associated pilot signal (p1) which are locked to an arbitrary clock signal (t1). A pilot signal PLL (10) generates a first carrier signal (x1.1, x2.1) and a second carrier signal (x1.2) by means of a first value allocator (15) and a second value allocator (20), respectively. According to the MPX signal (mpx1) to be demodulated, a control device (60) delivers a start value (i0) and at least one phase correction value (k1, k2). The start value (i0) sets the capture range of the pilot signal PLL (10) for the pilot signal (p1) according to the respective standard. In a first correcting device (16) and/or a second correcting device (23), the phase correction values (k1, k2) correct the system-inherent phase deviations of the first carrier signal (x1.1, x2.1) and/or the second carrier signal (x1.2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.