Is Mobius screen gone forever? - Page 4

DNSB · Today, 03:11 AM

USB-C is unlikely to the be all and end all of connectors. And yet, the EU in it's infinitely limiting bureaucratic vision has ensured that any future replacements for USB-C connectors will be unlikely to find a way into the EU market. One idea that seems to have disappeared was a optical data cable with 4 copper connections for V+/gnd and negotiation +/- communication. Out of the box, it was claimed to be capable of supporting up to 1TB data though the maximum power was limited to 50W (??? going off memory).

As for not needing multiple cables? Currently, I have 4 different cable families with USB-C connectors covering USB-C, Thunderbolt 3, 4 & 5. Then I have several USB-C cables with different power level support. A couple of my older cables do not support USB-PD (no e-marker chip) and seem to be limited to 20W so charging rather slow for many devices whereas 1 cable I have supports up to 240W (48V at 5A). That cable is notable for it's sheer size. One reference I looked at suggests 24AWG for the 4 V+/gnd pairs while the other 16 wires in the cable can be lighter gauge so that kinds of explains the size. Not sure what the power handling capability of the Thunderbolt cables is since they are stubby and came with specific devices. The Thunderbolt 5 cable was from a friend of mine's screwup. They didn't realize the 4TB external SSD they purchased already had a fixed cable. Comparing to the PCIe 4 connected SSD's in my desktop, it had a diskmark of 4,800 read/3,800 write MB/s while my internal Samsung 990 SSDs came up with 7000/5000 MB/s. It was nice to find the TB5 ports on my computer actually worked at that speed since I'd only used them for TB3/4 devices previously.

pdurrant · Today, 05:33 AM

Moderator Notice
Any further political comments will be deleted without notice or comment. Please keep political discussions to the (opt-in) P&R forum. Thank you.

Quoth · Today, 06:54 AM

A USB-C with optical is possible by two methods.

I have USB 3.x on micro-USB and USB-B that uses the compatible extended socket, so a regular cable gives USB 2.x

A USB-C socket / Plug can have an integral fibre (the actual optical signal only needs a pinhole) or an extended compatible connector like USB 3.x on USB-B and micro USB.
The USB 3.x on USB A uses 5 extra connections and plugs / sockets work with older 4 way versions.

Also the USB-C mandate doesn't stop adding other connectors, including coax power, combo wire & optical or compatible USB-C with optical built in.

Quoth · Today, 07:01 AM

I envisaged a 40V 30 kHz (or more) AC coax where there are multiple fibres in the dielectric. So 100s of Gbps data and up to a kW of power. No local SMPS needed for low voltages, but simple transformers. Small due to high frequency.

In 1980s there was an industrial controller using quad isolator transformers (1kV isolation?), like used on ethernet cat 5, in tall DIL package. AC power at 500 KHz was also clock for CMOS cpu on isolated i/o board. The other three were data in, data out and data clock.

Today, 03:11 AM	#46
DNSB Bibliophagist Posts: 48,676 Karma: 174510110 Join Date: Jul 2010 Location: Vancouver Device: Kobo Sage, Libra Colour, Lenovo M8 FHD, Paperwhite 4, Tolino epos	USB-C is unlikely to the be all and end all of connectors. And yet, the EU in it's infinitely limiting bureaucratic vision has ensured that any future replacements for USB-C connectors will be unlikely to find a way into the EU market. One idea that seems to have disappeared was a optical data cable with 4 copper connections for V+/gnd and negotiation +/- communication. Out of the box, it was claimed to be capable of supporting up to 1TB data though the maximum power was limited to 50W (??? going off memory). As for not needing multiple cables? Currently, I have 4 different cable families with USB-C connectors covering USB-C, Thunderbolt 3, 4 & 5. Then I have several USB-C cables with different power level support. A couple of my older cables do not support USB-PD (no e-marker chip) and seem to be limited to 20W so charging rather slow for many devices whereas 1 cable I have supports up to 240W (48V at 5A). That cable is notable for it's sheer size. One reference I looked at suggests 24AWG for the 4 V+/gnd pairs while the other 16 wires in the cable can be lighter gauge so that kinds of explains the size. Not sure what the power handling capability of the Thunderbolt cables is since they are stubby and came with specific devices. The Thunderbolt 5 cable was from a friend of mine's screwup. They didn't realize the 4TB external SSD they purchased already had a fixed cable. Comparing to the PCIe 4 connected SSD's in my desktop, it had a diskmark of 4,800 read/3,800 write MB/s while my internal Samsung 990 SSDs came up with 7000/5000 MB/s. It was nice to find the TB5 ports on my computer actually worked at that speed since I'd only used them for TB3/4 devices previously. Last edited by DNSB; Today at 03:35 AM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Readers with Mobius Flexible screen and expandable storage (SD slot)	clarhdowner	Which one should I buy?	7	08-22-2023 08:08 PM
Forever Amber is Forever Elusive in UK	BookCat	Reading Recommendations	14	01-29-2019 04:30 PM
After activating fast boot mode of my kindle paperwhite screen frozen forever	kindlerman	Kindle Developer's Corner	13	12-28-2012 03:20 PM
Touch Going back to home screen takes forever!	debralr	Kobo Reader	14	09-20-2012 09:14 AM
PRS-700 Weight on reader messed up screen forever?	cguerette	Sony Reader	4	04-23-2010 06:50 PM

Today, 05:33 AM	#47
pdurrant The Grand Mouse 高貴的老鼠 Posts: 74,554 Karma: 318090012 Join Date: Jul 2007 Location: Norfolk, England Device: Kindle Oasis	Moderator Notice Any further political comments will be deleted without notice or comment. Please keep political discussions to the (opt-in) P&R forum. Thank you.

Today, 06:54 AM	#48
Quoth Still reading Posts: 15,170 Karma: 111120239 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	A USB-C with optical is possible by two methods. I have USB 3.x on micro-USB and USB-B that uses the compatible extended socket, so a regular cable gives USB 2.x A USB-C socket / Plug can have an integral fibre (the actual optical signal only needs a pinhole) or an extended compatible connector like USB 3.x on USB-B and micro USB. The USB 3.x on USB A uses 5 extra connections and plugs / sockets work with older 4 way versions. Also the USB-C mandate doesn't stop adding other connectors, including coax power, combo wire & optical or compatible USB-C with optical built in.

Today, 07:01 AM	#49
Quoth Still reading Posts: 15,170 Karma: 111120239 Join Date: Jun 2017 Location: Ireland Device: All 4 Kinds: epub eink, Kindle, android eink, NxtPaper	I envisaged a 40V 30 kHz (or more) AC coax where there are multiple fibres in the dielectric. So 100s of Gbps data and up to a kW of power. No local SMPS needed for low voltages, but simple transformers. Small due to high frequency. In 1980s there was an industrial controller using quad isolator transformers (1kV isolation?), like used on ethernet cat 5, in tall DIL package. AC power at 500 KHz was also clock for CMOS cpu on isolated i/o board. The other three were data in, data out and data clock.

Advert