SI
SI
discoversearch

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.
Technology Stocks : e.Digital Corporation(EDIG) - Embedded Digital Technology
EDIG 0.00010000.0%Mar 20 5:00 PM EST
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  
To: mark cox who wrote (11288)2/26/2000 6:13:00 AM
From: Jon Tara  Read Replies (1) of 18366
 
Mark, what ARIS is doing is precisely what I suggested in my "B" approach (modulation of some aspect of the audio signal). They seem to discount my "A" approach (addition of tones or other sounds which are inaudible to the human ear due to "masking" by nearby frequencies in the original audio material).

FWIW, I came up with both of these approaches in a few minutes, as I typed, without any prior knowledge of how the companies that are currently doing digital watermarking have approached the problem. This suggests that the techniques are rather obvious.

I disagree with ARIS on the invulnarability of the approach. The watermark must be detectable if it is to be usable. If it is detectable, then it will be removable. Further, it need not be necessary to actually decode the content of the watermark in order to remove it. Any encryptation approach is likely to be ineffective in this regard.

I also disagree on the difficulty of reverse-engineering it. If the company patents the approach, one need simply read and understand the patent. If they choose to keep it as a trade secret - well, trade secrets, particularly in this field - have a way of getting out. (There isn't a satellite broadcast encryptation method that hasn't eventually leaked-out by way of engineers who can't keep their mouths shut...)

Your assertion that material that has had watermarks removed will likely not be playable on an SDMI player is patently rediculous. Surely, there will be legitmate sources of un-watermarked material (if nothing else, "garage bands"), and any player that is incapable of playing it will be at a distinct disadvantage. The public simply will not stand for this restriction.
Report TOU ViolationShare This Post
 Public ReplyPrvt ReplyMark as Last ReadFilePrevious 10Next 10PreviousNext  

HomeMailHotSubjectMarksPeopleMarksKeepersSettings
Terms Of UseContact UsCopyright/IP PolicyPrivacy PolicyAbout UsFAQAdvertise on SI
© 2025 Knight Sac Media.  Data provided by Twelve Data, Alpha Vantage, and CityFALCON News