In Reply to: RE: What do you mean by DSD discs? posted by rich121 on December 17, 2008 at 08:02:46:
"I wonder how long until the Patents run out and other companies can design their own software to use DSD?"
Do we know that no one offers this because of patents? Do we know exactly which patents?
SONY does have patents on some parts of SACD technology, including the copy protection mechanism and other aspects of the disk technology. However, the basic sigma delta modulation (DSD) format predates any possible invention by Sony. I looked at all the US patents assigned to Sony that had "delta sigma" or "sigma delta" in the title or abstract. None of these were related to simple playback of DSD. They were concerned with encoding DSD data from analog signals, sending it down wires, and processing the data in various ways (e.g. changing sample rate or gain).
I would be very surprised if playback of DSD data from ordinary computer storage media infringed any Sony patents. I doubt that Sony could stop the availability of computer equipment to play DSD files by means of their patents. Someone should offer this equipment and then we can encourage the record labels to make DSD downloads available.
Tony Lauck
"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar
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Follow Ups
- DSD playback and Sony Patents - Tony Lauck 08:55:30 12/17/08 (15)
- RE: DSD playback and Sony Patents - rich121 11:19:51 12/17/08 (14)
- RE: DSD playback and Sony Patents - TommyTunes 13:19:43 12/17/08 (13)
- RE: DSD playback and Sony Patents - rich121 21:54:35 12/17/08 (12)
- Liberating DSD - Tony Lauck 09:12:53 12/18/08 (9)
- RE: Liberating DSD - already done - Christine Tham 17:14:15 12/18/08 (8)
- Nice, but no cigar - Tony Lauck 18:15:02 12/18/08 (7)
- Try using Google - Christine Tham 19:03:04 12/18/08 (6)
- Converter found? - Tony Lauck 22:32:29 12/18/08 (0)
- RE: Try using Google - Tony Lauck 19:58:52 12/18/08 (4)
- Do you guys ever just listen? - TommyTunes 05:16:18 12/19/08 (3)
- Listen to this... - Charles Hansen 22:29:42 12/19/08 (1)
- RE: Listen to this... - Tony Lauck 13:01:39 12/20/08 (0)
- That's why I want the converter software - Tony Lauck 08:13:37 12/19/08 (0)
- RE: DSD playback and Sony Patents - TommyTunes 06:29:49 12/18/08 (1)
- RE: DSD playback and Sony Patents - rich121 08:53:25 12/18/08 (0)