[time-nuts] Alternate frequency sources : DVB-T and ISDN & OT comment
SAIDJACK at aol.com
SAIDJACK at aol.com
Mon Nov 23 23:39:16 UTC 2009
Hi Kit,
there is an easy way out:
Use a Philips Video Decoder (SAA7113 or similar), it will generate a locked
27MHz output reference pixel clock from the video stream coming out of the
STB.
Unfortunately most $49 STB's don't do proper PCR synchronization via PLL,
they just do dropped frames, or repeated frames...
bye,
Said
In a message dated 11/23/2009 15:32:47 Pacific Standard Time,
kScally at BYTECAN.com.au writes:
Attempting to recover any part of a RAW MPEG data stream from a "$49
digital STB" may be doomed to failure. Most STB of this ilk use a single
jungle-chip with RF in and various flavours of video out. The data
streams you need to access for any clock recovery strategy is
unfortunately buried in silicon....
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