PIF (Parity Inner Failure) vs. PO / POE (Parity Outer Error)
| Newbie Forum Discuss, PIF (Parity Inner Failure) vs. PO / POE (Parity Outer Error) at Starters forum; Hello, I've been scouring the Internet in an attempt to understand the difference between a PIF and an PO value. I understand pretty much everything else, e.g. PI = PIE = Parity Inner Error, which will undergo Parity Inner Correction Attempt PIF = Parity Inner Failure, Attempt to correct PIE |
Posted: 09-12-2005 - #1
| Hello, I've been scouring the Internet in an attempt to understand the difference between a PIF and an PO value. I understand pretty much everything else, e.g. PI = PIE = Parity Inner Error, which will undergo Parity Inner Correction Attempt PIF = Parity Inner Failure, Attempt to correct PIE with inner parity failed PO = POE = Outer Parity Error = What remains after parity inner correction? Wouldn't this mean POE = PIF? ... ?!? POF = Parity Outer Failure, i.e. a POE could not be corrected on the outer parity level. This is a hard error that causes a CRC32 read error and makes the DVD unusable. Maybe the DVD can still be read in a better DVD drive that will still be able to correct the POE, thereby avoiding the POF. Some people say PIF = POE, others say PIF != POE. So how are these two related?!? Is one always greater than the other? Is it a matter of definition? How much can the relationship between PIF and POE vary? (factor of 4x or larger etc.)? Thanks!! |
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Posted: 09-12-2005 - #2
| If you search some more withing this forum, you will find examples showing what is acceptable as far as PI/PO, or PIF/POF. Basically PI errors can be as high as 200, and still have a readable disc, whereas PO errors over 8 are not good. In actuality, you look at the average PI/PO, but you still don't want any spikes in PI that run high, or in PO that are above say 8 or 9. If you use CDSPEED disc quality test, all you have to worry about is the disc quality score which is shown in a box. As long as your disk quality score is 88 - 100, your disc should be readable, but you should truely strive for quality scores of 93 and above.
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Posted: 09-12-2005 - #3
| Plenty of information in this forum. Some suggested links to review: http://www.ecma-international.org/ http://club.cdfreaks.com/showthread.php?t=80545 http://club.cdfreaks.com/showthread.php?t=96285 http://club.cdfreaks.com/showthread.php?t=138988 http://club.cdfreaks.com/showthread.php?t=120533 http://club.cdfreaks.com/showthread.php?t=93944 |
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