Proof-of-principle demonstration of 3-D magnetic recording
Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic recording
https://www.sciencedaily.com/releases/2024/04/240408130543.htm

Picture of layers:
https://www.nims.go.jp/eng/news/press/2024/03/202403270.html

On 2024-04-09 06:42, Jan Panteltje wrote:
> Proof-of-principle demonstration of 3-D magnetic recording
> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic recording
> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>
> Picture of layers:
> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>

Great idea for recording.
Now we just have to invent a reading system...

Arie

On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
<noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:

>On 2024-04-09 06:42, Jan Panteltje wrote:
>> Proof-of-principle demonstration of 3-D magnetic recording
>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>> recording
>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>
>> Picture of layers:
>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>
>
>Great idea for recording.
>Now we just have to invent a reading system...
>
>Arie
>

correlation of 2 magnetic sensors pointing down in an angle?

MS1 MS MS2
\ \/ /
=========== top layer
\ /
\/
=========== second layer

Use fixed font.

Have not tried it...

On 4/9/24 09:49, Jan Panteltje wrote:
> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>
>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>> Proof-of-principle demonstration of 3-D magnetic recording
>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>> recording
>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>
>>> Picture of layers:
>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>
>>
>> Great idea for recording.
>> Now we just have to invent a reading system...
>>
>> Arie
>>
>
> correlation of 2 magnetic sensors pointing down in an angle?
>
> MS1 MS MS2
> \ \/ /
> =========== top layer
> \ /
> \/
> =========== second layer
>
> Use fixed font.
>
> Have not tried it...

They seem to have three distinguishable levels of magnetization,
so about 1.5 bits per cell.

Jeroen Belleman

On a sunny day (Tue, 9 Apr 2024 10:07:12 +0200) it happened Jeroen Belleman
<jeroen@nospam.please> wrote in <uv2svn$3p4r$1@dont-email.me>:

>On 4/9/24 09:49, Jan Panteltje wrote:
>> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
>> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>>
>>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>>> Proof-of-principle demonstration of 3-D magnetic recording
>>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>>> recording
>>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>>
>>>> Picture of layers:
>>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>>
>>>
>>> Great idea for recording.
>>> Now we just have to invent a reading system...
>>>
>>> Arie
>>>
>>
>> correlation of 2 magnetic sensors pointing down in an angle?
>>
>> MS1 MS MS2
>> \ \/ /
>> =========== top layer
>> \ /
>> \/
>> =========== second layer
>>
>> Use fixed font.
>>
>> Have not tried it...
>
>They seem to have three distinguishable levels of magnetization,
>so about 1.5 bits per cell.
>
>Jeroen Belleman

I once did read about 3D storage with lasrs in some crystal or something..
No idea if that ever came to market.
And storage in DNA...

On 2024-04-09 09:49, Jan Panteltje wrote:
> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>
>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>> Proof-of-principle demonstration of 3-D magnetic recording
>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>> recording
>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>
>>> Picture of layers:
>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>
>>
>> Great idea for recording.
>> Now we just have to invent a reading system...
>>
>> Arie
>>
>
> correlation of 2 magnetic sensors pointing down in an angle?
>
> MS1 MS MS2
> \ \/ /
> =========== top layer
> \ /
> \/
> =========== second layer
>
> Use fixed font.
>
> Have not tried it...

Pointing magnetic sensors? Thin beams? Unknown to me.
Array of (non-thin beam!) sensors + tomography? Might work.

Glad I'm retired, this looks too much like the DocData optical tape storage I worked on.

Arie

On a sunny day (Tue, 9 Apr 2024 12:00:40 +0200) it happened Arie de Muijnck
<noreply@ademu.com> wrote in <nnd$6ebcbc3d$25de2d67@8f3b57b8b1b11fb4>:

>On 2024-04-09 09:49, Jan Panteltje wrote:
>> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
>> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>>
>>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>>> Proof-of-principle demonstration of 3-D magnetic recording
>>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>>> recording
>>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>>
>>>> Picture of layers:
>>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>>
>>>
>>> Great idea for recording.
>>> Now we just have to invent a reading system...
>>>
>>> Arie
>>>
>>
>> correlation of 2 magnetic sensors pointing down in an angle?
>>
>> MS1 MS MS2
>> \ \/ /
>> =========== top layer
>> \ /
>> \/
>> =========== second layer
>>
>> Use fixed font.
>>
>> Have not tried it...
>
>Pointing magnetic sensors? Thin beams? Unknown to me.
>Array of (non-thin beam!) sensors + tomography? Might work.
>
>Glad I'm retired, this looks too much like the DocData optical tape storage I worked on.

Had to look that up, in Dutch:
https://nl.wikipedia.org/wiki/DOCdata
strange, never heard of that
At some point Philips asked me to write the service documentation for their Videodisc.
I have written English service documentation from lab reports for Philips Mil in Huizen, and worked in their service-center, so they knew me.
As I had a lot of experience with Ampex magnetic video tape I suggested a dropout compensation system to them back then.
Went in to some detail in Eindhoven.. but that analog optical video disc never really came of the ground.
https://en.wikipedia.org/wiki/Videodisc
The whole world changed when MPEG compression became available,
https://en.wikipedia.org/wiki/MPEG-1
now you could store movies digitally in much less space, like on an audio CD.
and digital error detection and correction became possible.
I still have the old Laser Vision 92VP830 and 22VP932 repair method and service manual and schematics upstairs in a drawer.
https://www.siwe.be/files/collectie/V366-Philips-Laserdisc-VLP830-200pi.pdf

On 09/04/2024 09:46, Jan Panteltje wrote:
> On a sunny day (Tue, 9 Apr 2024 10:07:12 +0200) it happened Jeroen Belleman
> <jeroen@nospam.please> wrote in <uv2svn$3p4r$1@dont-email.me>:
>
>> On 4/9/24 09:49, Jan Panteltje wrote:
>>> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
>>> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>>>
>>>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>>>> Proof-of-principle demonstration of 3-D magnetic recording
>>>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>>>> recording
>>>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>>>
>>>>> Picture of layers:
>>>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>>>
>>>>
>>>> Great idea for recording.
>>>> Now we just have to invent a reading system...
>>>>
>>>> Arie
>>>>
>>>
>>> correlation of 2 magnetic sensors pointing down in an angle?
>>>
>>> MS1 MS MS2
>>> \ \/ /
>>> =========== top layer
>>> \ /
>>> \/
>>> =========== second layer
>>>
>>> Use fixed font.
>>>
>>> Have not tried it...
>>
>> They seem to have three distinguishable levels of magnetization,
>> so about 1.5 bits per cell.
>>
>> Jeroen Belleman
>
> I once did read about 3D storage with lasrs in some crystal or something..
> No idea if that ever came to market.
> And storage in DNA...

Here are a couple of early review papers on holographic recording:

https://downloads.bbc.co.uk/rd/pubs/reports/1973-39.pdf

http://downloads.bbc.co.uk/rd/pubs/reports/1973-40.pdf

John

On a sunny day (Tue, 9 Apr 2024 23:19:29 +0100) it happened John R Walliker
<jrwalliker@gmail.com> wrote in <uv4eri$2es1$1@dont-email.me>:

>On 09/04/2024 09:46, Jan Panteltje wrote:
>> On a sunny day (Tue, 9 Apr 2024 10:07:12 +0200) it happened Jeroen Belleman
>> <jeroen@nospam.please> wrote in <uv2svn$3p4r$1@dont-email.me>:
>>
>>> On 4/9/24 09:49, Jan Panteltje wrote:
>>>> On a sunny day (Tue, 9 Apr 2024 09:19:46 +0200) it happened Arie de Muijnck
>>>> <noreply@ademu.com> wrote in <nnd$16a4abad$09e25412@0ec9ca3c539ad932>:
>>>>
>>>>> On 2024-04-09 06:42, Jan Panteltje wrote:
>>>>>> Proof-of-principle demonstration of 3-D magnetic recording
>>>>>> Possibility of ultra-high density hard disk drives with areal densities exceeding 10 Tbit/in² using multi-level magnetic
>>>>>> recording
>>>>>> https://www.sciencedaily.com/releases/2024/04/240408130543.htm
>>>>>>
>>>>>> Picture of layers:
>>>>>> https://www.nims.go.jp/eng/news/press/2024/03/202403270.html
>>>>>>
>>>>>
>>>>> Great idea for recording.
>>>>> Now we just have to invent a reading system...
>>>>>
>>>>> Arie
>>>>>
>>>>
>>>> correlation of 2 magnetic sensors pointing down in an angle?
>>>>
>>>> MS1 MS MS2
>>>> \ \/ /
>>>> =========== top layer
>>>> \ /
>>>> \/
>>>> =========== second layer
>>>>
>>>> Use fixed font.
>>>>
>>>> Have not tried it...
>>>
>>> They seem to have three distinguishable levels of magnetization,
>>> so about 1.5 bits per cell.
>>>
>>> Jeroen Belleman
>>
>> I once did read about 3D storage with lasrs in some crystal or something..
>> No idea if that ever came to market.
>> And storage in DNA...
>
>Here are a couple of early review papers on holographic recording:
>
>https://downloads.bbc.co.uk/rd/pubs/reports/1973-39.pdf
>
>http://downloads.bbc.co.uk/rd/pubs/reports/1973-40.pdf
>
>John

Interesting links
Yes I am familiar with holograms, may still have some somewhere.
That started after visiting some exhibition in London where they demonstrated some...
Bought some holograms there and had a helium neon laser from an old Philips player at home...

Jan Panteltje <alien@comet.invalid> wrote:

> Proof-of-principle demonstration of 3-D magnetic recording

Oh no! You have just reminded me of "The Stone Tape" by Nigel Kneale.
I used to have nightmares about that.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On a sunny day (Wed, 10 Apr 2024 09:13:02 +0100) it happened
liz@poppyrecords.invalid.invalid (Liz Tuddenham) wrote in
<1qrsk5x.ebl64zlshrw6N%liz@poppyrecords.invalid.invalid>:

>Jan Panteltje <alien@comet.invalid> wrote:
>
>> Proof-of-principle demonstration of 3-D magnetic recording
>
>Oh no! You have just reminded me of "The Stone Tape" by Nigel Kneale.
>I used to have nightmares about that.

LOL, just did read the wikipedia article on it:
https://en.wikipedia.org/wiki/The_Stone_Tape

Have not seen it, there are so many? things 'ghost' related,
'Ghostbusters' I have seen is one of those.

I have never seen a ghost myself though.
I knew somebody who claimed to have seen some at a burial site...

There is also a TV series about alien flying saucer observations presented by that Startrack commander
William Shatner that I have seen on German TV (German voice over).
Stopped wacthing that.

I have never seen an alien yet..

Na... you do not usually get to _see_ the Usenet posters so...

Jan Panteltje <alien@comet.invalid> wrote:

> On a sunny day (Wed, 10 Apr 2024 09:13:02 +0100) it happened
> liz@poppyrecords.invalid.invalid (Liz Tuddenham) wrote in
> <1qrsk5x.ebl64zlshrw6N%liz@poppyrecords.invalid.invalid>:
>
> >Jan Panteltje <alien@comet.invalid> wrote:
> >
> >> Proof-of-principle demonstration of 3-D magnetic recording
> >
> >Oh no! You have just reminded me of "The Stone Tape" by Nigel Kneale.
> >I used to have nightmares about that.
>
> LOL, just did read the wikipedia article on it:
> https://en.wikipedia.org/wiki/The_Stone_Tape
>
> Have not seen it, there are so many? things 'ghost' related,
> 'Ghostbusters' I have seen is one of those.

"The Stone Tape" is completely different, it's just ordinary technology
researchers trying to go about their business and stumbling over
something that is left mostly to the viewer's imagination. The terror
doesn't come from what is shown, it comes from what is *not* shown, but
slowly forms as an idea in the viewer's mind as the layers are peeled
back.

> I have never seen a ghost myself though.
> I knew somebody who claimed to have seen some at a burial site...

It depends what you mean by 'ghost' - I have never seen a gliding figure
in a white sheet moaning "Whooo!" but I have seen some very strange
things that are not accounted for by conventional knowledge. I have
also experienced an overwhelming feeling of dread in one particular
location -- many years later I mentioned it to a friend and found she
had had exactly the same experience at the same place.

A week after our mother died, my sister and I both had a very strange
experience. She sounded me out cautiously, in case I ridiculed her, but
I knew exactly what she was going to tell me and confirmed that it had
just happened to me too.

--
~ Liz Tuddenham ~
(Remove the ".invalid"s and add ".co.uk" to reply)
www.poppyrecords.co.uk

On a sunny day (Wed, 10 Apr 2024 11:26:29 +0100) it happened
liz@poppyrecords.invalid.invalid (Liz Tuddenham) wrote in
<1qrspuu.b1rua811xd8h1N%liz@poppyrecords.invalid.invalid>:

>Jan Panteltje <alien@comet.invalid> wrote:
>
>> On a sunny day (Wed, 10 Apr 2024 09:13:02 +0100) it happened
>> liz@poppyrecords.invalid.invalid (Liz Tuddenham) wrote in
>> <1qrsk5x.ebl64zlshrw6N%liz@poppyrecords.invalid.invalid>:
>>
>> >Jan Panteltje <alien@comet.invalid> wrote:
>> >
>> >> Proof-of-principle demonstration of 3-D magnetic recording
>> >
>> >Oh no! You have just reminded me of "The Stone Tape" by Nigel Kneale.
>> >I used to have nightmares about that.
>>
>> LOL, just did read the wikipedia article on it:
>> https://en.wikipedia.org/wiki/The_Stone_Tape
>>
>> Have not seen it, there are so many? things 'ghost' related,
>> 'Ghostbusters' I have seen is one of those.
>
>"The Stone Tape" is completely different, it's just ordinary technology
>researchers trying to go about their business and stumbling over
>something that is left mostly to the viewer's imagination. The terror
>doesn't come from what is shown, it comes from what is *not* shown, but
>slowly forms as an idea in the viewer's mind as the layers are peeled
>back.
>
>
>> I have never seen a ghost myself though.
>> I knew somebody who claimed to have seen some at a burial site...
>
>It depends what you mean by 'ghost' - I have never seen a gliding figure
>in a white sheet moaning "Whooo!" but I have seen some very strange
>things that are not accounted for by conventional knowledge. I have
>also experienced an overwhelming feeling of dread in one particular
>location -- many years later I mentioned it to a friend and found she
>had had exactly the same experience at the same place.
>
>A week after our mother died, my sister and I both had a very strange
>experience. She sounded me out cautiously, in case I ridiculed her, but
>I knew exactly what she was going to tell me and confirmed that it had
>just happened to me too.

Sure, many experiences are possible for living creatures
Our attachment to each other may cause re-programming of the neural net when one dies.

Quote from my blog https://panteltje.nl/panteltje/blog/index.html :
The 2 states of man:
When we have a loop, a bunch of cells forming a line biting their own tail, a 'ring oscillator' forms, basis of the basic pulse of life, wave generator, but when cells divide and the loop
somehow becomes a figure 8, _then_ there are 2 oscillating modes possible.
In the one mode 2 separate independent ring oscillators form, and will not synchronize, causing 'out of sync' patterns in behavior.
In the other mode the signal is passed along the figure 8.... One big stable strong signal.
We have, it seems, both neural path in our brain halves (consider the top of the 8 the left, and the bottom the right brain halve for moment).
It seems we can be in 2 states, 'out of sync' and 'in sync'.
The state we are in can change, if we look at the brain as playing a A versus B interaction all the time, then interaction with the one we play against (simulate in fact),
can change the flow from 2 independent circuits '0' to one figure '8', and backwards.
When separated then we stay in the last mode.
The one who can change the mode of oscillation is the one we are closest to.
This is all pure hypothesis of course, the 2 states exist, but this explanation is the best I could come up with to explain it in the simplest possible way.
We should always strive to be in the figure 8 state, to be in harmony, in sync, with ourselves..
-----

What you 'see' or better 'experience' is basically your brain wave patterns and your decoding of those.
Just a neural net
And very likely connected to everything else in the known universe via EM radiation and what else we do not yet know.
'Nothing you can know that is not known'
Beatles lyrics