Title: MJPEG Chip?
Post by: paulus on January 12, 2006, 10:40:58 PM
Post by: paulus on January 12, 2006, 10:40:58 PM
Anybody has the MJPEG chip for Dimension board?
Our research lab bought several Cubes in 1990 with the promise of that MJPEG chip for real-time video compression, but I never see one when the lab officially quit using NeXT in 1995.
Paulus
Our research lab bought several Cubes in 1990 with the promise of that MJPEG chip for real-time video compression, but I never see one when the lab officially quit using NeXT in 1995.
Paulus
Title: Re: MJPEG Chip?
Post by: blackcube on January 13, 2006, 08:15:08 AM
Post by: blackcube on January 13, 2006, 08:15:08 AM
Quote from: "paulus"Anybody has the MJPEG chip for Dimension board?
Our research lab bought several Cubes in 1990 with the promise of that MJPEG chip for real-time video compression, but I never see one when the lab officially quit using NeXT in 1995.
Paulus
Randy at Turbo Software has the only jpeg daughter card that I have heard of.
http://www.channelu.com/NeXT/Black/jpeg/index.html
Title: Re: MJPEG Chip?
Post by: Korperlich on October 18, 2007, 06:41:57 PM
Post by: Korperlich on October 18, 2007, 06:41:57 PM
Quote from: "blackcube"
Randy at Turbo Software has the only jpeg daughter card that I have heard of.
http://www.channelu.com/NeXT/Black/jpeg/index.html
Are those for real? (as in genuine-NeXT) His page is the only bit of information I can find on these cards...
Title: C-cube motion jpeg
Post by: rice0067 on March 14, 2008, 10:43:53 AM
Post by: rice0067 on March 14, 2008, 10:43:53 AM
They never made it to production.. but here is a short communication from when they were hopeful.
http://portal.acm.org/citation.cfm?doid=103085.103097
Within it says that with the hardware compression the ND should do video compression on standard SCSI at 600k/s at an "OK" reslolution and that good resolution would require "fast SCSI" or large memory cache.
This was in 1991. Those familiar with "back in the day" video editing will remember that you really needed a striped RAID array ala avid or video toaster to handle the bandwidth needed.
http://portal.acm.org/citation.cfm?doid=103085.103097
Within it says that with the hardware compression the ND should do video compression on standard SCSI at 600k/s at an "OK" reslolution and that good resolution would require "fast SCSI" or large memory cache.
This was in 1991. Those familiar with "back in the day" video editing will remember that you really needed a striped RAID array ala avid or video toaster to handle the bandwidth needed.
Title: MJPEG Chip?
Post by: mikeboss on July 24, 2013, 07:55:07 AM
Post by: mikeboss on July 24, 2013, 07:55:07 AM
Title: MJPEG Chip?
Post by: pentium on July 25, 2013, 02:40:57 AM
Post by: pentium on July 25, 2013, 02:40:57 AM
If I recall, the prototypes were also very buggy still when they were axed. You really don't want one.
Title: MJPEG Chip?
Post by: jroark on December 28, 2013, 05:45:25 PM
Post by: jroark on December 28, 2013, 05:45:25 PM
Here is a pic with the C-Cube chip integrated on the ND.
Title: MJPEG Chip?
Post by: pentium on December 28, 2013, 10:49:41 PM
Post by: pentium on December 28, 2013, 10:49:41 PM
WOAH.
What document did that come from?
What document did that come from?
Title: MJPEG Chip?
Post by: jroark on December 28, 2013, 11:05:00 PM
Post by: jroark on December 28, 2013, 11:05:00 PM
The NeXT Product Family Specifications from 1991
Title: Re: MJPEG Chip?
Post by: mikeboss on August 13, 2023, 02:50:52 PM
Post by: mikeboss on August 13, 2023, 02:50:52 PM
found these pictures on archive.org
http://web.archive.org/web/20010119090600/http://www.channelu.com/NeXT/Black/jpeg/index.html (http://web.archive.org/web/20010119090600/http://www.channelu.com/NeXT/Black/jpeg/index.html)
http://web.archive.org/web/20010119090600/http://www.channelu.com/NeXT/Black/jpeg/index.html (http://web.archive.org/web/20010119090600/http://www.channelu.com/NeXT/Black/jpeg/index.html)
Title: Re: MJPEG Chip?
Post by: mikeboss on August 13, 2023, 03:37:51 PM
Post by: mikeboss on August 13, 2023, 03:37:51 PM
Title: Re: MJPEG Chip?
Post by: Rob Blessin Black Hole on September 18, 2023, 12:22:46 AM
Post by: Rob Blessin Black Hole on September 18, 2023, 12:22:46 AM
Hello NeXT Community: 2 Questions as the main C Cube chips on this board are still in production and for sale cheap on eBay $9 .... even some new old stock ones.
1) If we make one lol and are the drivers in NeXTSTEP to support it?
I think the main issue is they we're running hot but perhaps cooling fan would help ... and yes I saw the one that Randy had awhile back.
2) Is it possible to emulate it on Previous .... as that would be amazing.
1) If we make one lol and are the drivers in NeXTSTEP to support it?
I think the main issue is they we're running hot but perhaps cooling fan would help ... and yes I saw the one that Randy had awhile back.
2) Is it possible to emulate it on Previous .... as that would be amazing.
Title: Re: MJPEG Chip?
Post by: user341 on September 18, 2023, 06:19:32 PM
Post by: user341 on September 18, 2023, 06:19:32 PM
Was it just heat that made the board fail? My understanding is the board would work for a few seconds and basically bomb the entire machine. Not sure "why". It's tough to imagine heat would get bad enough in a few seconds, and sounds like some more fundamental failure with the c-cube processor.
I agree, it would be cool to try and emulate this, as we might be able to do things in software that were just not possible in hardware back then?
Also, if we solved the problem in software, then perhaps we could reverse engineer some FPGA with today's tech and provide more than enough compression to make our own c-cubed replacement daughter cards that work better than the original ever could.
I agree, it would be cool to try and emulate this, as we might be able to do things in software that were just not possible in hardware back then?
Also, if we solved the problem in software, then perhaps we could reverse engineer some FPGA with today's tech and provide more than enough compression to make our own c-cubed replacement daughter cards that work better than the original ever could.
Title: Re: MJPEG Chip?
Post by: SpaceRat2k on January 24, 2024, 06:45:41 PM
Post by: SpaceRat2k on January 24, 2024, 06:45:41 PM
It would also help us with a NeXT browsers issue. Handle 4k and 8k pics and online vids
Title: Re: MJPEG Chip?
Post by: Khashoggi on February 02, 2024, 09:26:27 AM
Post by: Khashoggi on February 02, 2024, 09:26:27 AM
Looks like U6-U9 have checksums on the stickers, so those have code in them which would be needed to emulate.
NeXTstep source would also need to be searched for the API it is using with the Dimension to see if there is anything related to the MJPEG board. And, you would need to inspect the code running on the Dimension board itself.
Probably less work to just do a clean approach (new design), which would already be a ton of mostly software engineering to get Nextstep integrated with the co-processor.
NeXTstep source would also need to be searched for the API it is using with the Dimension to see if there is anything related to the MJPEG board. And, you would need to inspect the code running on the Dimension board itself.
Probably less work to just do a clean approach (new design), which would already be a ton of mostly software engineering to get Nextstep integrated with the co-processor.