Carrier generations facility for a digital MPX-signal demodulation micronas intermetall GMBH
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United States of America Patent
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Feb 26, 2002
Grant Date -
N/A
app pub date -
Feb 12, 1999
filing date -
Feb 12, 1998
priority date (Note) -
Expired
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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).
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