Here are some problems with that scenario:
1) Rambus had already presented their technology to most of the memory manufacturers individually before Jedec, so they already knew about it (even though Rambus was not allowed to present it at Jedec.)
2) As I understand it, the actual standard for SDRAM developed at JEDEC does not require the use of technology on which Rambus has patents. However, all of the actual implementations (the ways that SDRAM was actually made) DID infringe on Rambus' patents. So, technically, you could make SDRAM without infringing, but no one did because it wouldn't work worth a darn. But the standard developed at Jedec while Rambus was there (sitting quietly in the audience without presenting anything) did not infringe. (Although it seems like Rambus themselves weren't entirely sure at the time if it was going to or not.)
3) Rambus left Jedec, and announced to Jedec officially that they thought there would be potential issues involving their patents. Long AFTER Rambus left Jedec, the DDR standard was developed, and even later DDR2. Yet all of the DDR and DDR2 that is made now infringe on Rambus patents. Are they still "submarining" patents? The truth is, there had not been, and still has not been, any viable alternative invented.
If you are interested in learning about this subject try here: http://www.ftc.gov/os/adjpro/d9302/040223initialde cision.pdf Note - that link is to the FTC, and is a 300+ page pdf of the decision written by an FTC judge after he spend months hearing a trial about this situation. This is not Rambus propaganda. The FTC investigated Rambus at the behest of Micron. If you want an exhaustive, unbiased source of information, this is it. There is a summary section at the end that you can start on. If you read through enough of this, as I have, you can see that in fact it was the memory manufacturers who were purposely screwing both Rambus and the public, and a lot of what you have read in the trade press is propaganda spread by them.
Slashdot Mirror
I don't have time to try to find a link right now, but I am pretty sure that I've read that XDRAM has much lower latency (than RDRAM.)
Here are some problems with that scenario:
e cision.pdf
1) Rambus had already presented their technology to most of the memory manufacturers individually before Jedec, so they already knew about it (even though Rambus was not allowed to present it at Jedec.)
2) As I understand it, the actual standard for SDRAM developed at JEDEC does not require the use of technology on which Rambus has patents. However, all of the actual implementations (the ways that SDRAM was actually made) DID infringe on Rambus' patents. So, technically, you could make SDRAM without infringing, but no one did because it wouldn't work worth a darn. But the standard developed at Jedec while Rambus was there (sitting quietly in the audience without presenting anything) did not infringe. (Although it seems like Rambus themselves weren't entirely sure at the time if it was going to or not.)
3) Rambus left Jedec, and announced to Jedec officially that they thought there would be potential issues involving their patents. Long AFTER Rambus left Jedec, the DDR standard was developed, and even later DDR2. Yet all of the DDR and DDR2 that is made now infringe on Rambus patents. Are they still "submarining" patents? The truth is, there had not been, and still has not been, any viable alternative invented.
If you are interested in learning about this subject try here:
http://www.ftc.gov/os/adjpro/d9302/040223initiald
Note - that link is to the FTC, and is a 300+ page pdf of the decision written by an FTC judge after he spend months hearing a trial about this situation. This is not Rambus propaganda. The FTC investigated Rambus at the behest of Micron. If you want an exhaustive, unbiased source of information, this is it. There is a summary section at the end that you can start on. If you read through enough of this, as I have, you can see that in fact it was the memory manufacturers who were purposely screwing both Rambus and the public, and a lot of what you have read in the trade press is propaganda spread by them.