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Old 11th December 2017, 16:47   #1  |  Link
hajj_3
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DTS audio patents expiration date?

http://dts.com/patents/bd-dvd-players

On this link there is "DTS Digital Surround" and "2.0 + Digital Out".

"DTS Digital Surround" patents:

European patent 0864146: http://www.google.com/patents/EP0864146 - expired?
U.S patent 5,956,674: https://www.google.co.uk/patents/US5956674 - expired?
U.S patent 5,974,380: https://www.google.co.uk/patents/US5974380 - expired?
U.S patent 5,978,762: https://www.google.co.uk/patents/US5978762 - expired?
U.S patent 6,487,535: https://www.google.co.uk/patents/US6487535 - expired?

"2.0 + Digital Out" patents:

European patent 0864146: http://www.google.com/patents/EP0864146 - expired?
European patent 1741093: http://www.google.com/patents/EP1741093 - anticipated expiration: 2025-03-21
U.S patent 5,956,674: https://www.google.co.uk/patents/US5956674 - expired?
U.S patent 5,974,380: https://www.google.co.uk/patents/US5974380 - expired?
U.S patent 5,978,762: https://www.google.co.uk/patents/US5978762 - expired?
U.S patent 6,487,535: https://www.google.co.uk/patents/US6487535 - expired?
U.S patent 7,333,929: https://www.google.co.uk/patents/US7333929 - anticipated expiration: 2021-09-13
U.S patent 7,548,853: https://www.google.co.uk/patents/US7548853 - adjusted expiration: 2027-02-06

6 February 2027 is the date that the last u.s patent expires and march 21st 2025 for the last european patents for the 2.0 + digital out patents. The surround sound patents seemed to expire on 2nd march 2019.

If a software dvd player for computers wanted to playback movie dvds that contain a DTS audio track, would it need any of the patents in the "2.0 and digital out" patents list?

Last edited by hajj_3; 2nd March 2019 at 16:40.
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Old 12th December 2017, 11:21   #2  |  Link
Ghitulescu
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Originally Posted by hajj_3 View Post
Do these patents expire 20yrs after the filing date or granted date?
Filing date.

Yet one has to be very careful (I sense a dark force raising here ), as usually the whole thing is more likely a whole package, patents, designs, copyrights and stuff, all nicely packaged and put in the hands of the respective companies.

In the US there are cases of reissued patents.

And most of the patents are actually slight improvements, still covering the old "inventions", which are still "dangerous" for the public to touch. That's why a patent attorney is paid so much, to use any trick possible to get more coverage and duration for his client.
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Old 2nd March 2019, 16:22   #3  |  Link
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It looks like a load of these patents have expired, it seems that the DTS surround sound patents have now expired i think.
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Old 2nd March 2019, 16:58   #4  |  Link
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Unlike earlier series the Samsung TVs 2018 and 2019 models don't have DTS anymore. If the patents expired today, ideally, they'd add DTS support via firmware.
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Old 15th April 2019, 09:48   #5  |  Link
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It looks like a load of these patents have expired, it seems that the DTS surround sound patents have now expired i think.
But are probably wrapped into the DTS-X patents.
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Old 15th April 2019, 11:52   #6  |  Link
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Yes and suddenly "due to technical limitations" or "no consumer demand" support for these expired audio format will be dropped of devices and "new, better faster stronger" formats are in their place.
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Old 15th April 2019, 12:15   #7  |  Link
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Yes and suddenly "due to technical limitations" or "no consumer demand" support for these expired audio format will be dropped of devices and "new, better faster stronger" formats are in their place.
No, quite the opposite, DTS will become more common on tv's. This is due to 720p/1080p/ bluray rips often using DTS audio tracks. This is why a lot of tv's have added DTS support over the last small number of years, consumers were angry that their files wouldn't play so they bought a brand that did support DTS. Now that patents may possibly have ended we will see all new tv's support it.

We will start seeing Dolby AC-4 added to tv's soon though as it offers great compression and features and only costs $1.20 to license in small volume and $0.15 for huge volume. It is also free if you are paying for a Dolby Digital Plus licence so i suspect that Dolby Digital Plus and Dolby AC-4 will become standard on all new tv's within the next couple of years.

Last edited by hajj_3; 15th April 2019 at 12:19.
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Old 15th April 2019, 15:59   #8  |  Link
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Originally Posted by sneaker_ger View Post
Unlike earlier series the Samsung TVs 2018 and 2019 models don't have DTS anymore.
It's the same with Panasonic TV's too (from 2017 on-wards)...
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