ATSC Specs Allow for a 1080p@30hz, however now one has the balls to do progressive scan 1080. The key issue is that 1080@60hz is beyond the specs of MPEG-2, so to do proper 1080p requires that a new video standard (like Mpeg-4 or WMA) be used instead. Seeing that Hollywood is still in love with 24fps for some stupid reason (as if jerky motion could ever be considered artfull) this means that HD-DVD would use the same 3:2 Telecine that DVDs use today. For 1080p playback it would be a rather simple matter of just doing the same stuff progressive dvd players do today, just on a larger scale.
I have a nasty taste in my mouth about Microsoft's video codec and the limited size of this purposed HD-DVD--the first thing that would go would be the film look of a movie, it really would lose a lot of its intended look.
If you go to the Pioneer site, it talks about uplinking commands to Pioneer via 200Kw transmitter....I think most space probes don't have that kind of reserve.
Of course in addition there are issues with the antenna gain of them, as well as communicating with the same standard, etc. Its really just a lot easier to put low powered transmitters and smaller antenna on the bird, and just make up for it with on the earth side.
Seeing that it looks like you know quite a bit about pioneer and I can not find much about the sub systems online I have a question:
What is going on with the Pioneer 10/11. I know that RTG wattage is to low to power the transmitter, but is there any part of it that is still 'on'?
Also, I am under the impression that in all odds its did not fly with an onboard computer so some sort of logic based control system was used. Mind telling me a little about how the system opperated and how data was stored and sent to earth?
Vidicons where used back then. It was a real challenge to get images of the outer panels (poor lighting) with them.
Galilieo was the first probe to use a CCD before that it all in the tube domain.
In a related matter I actually have an old Vidicon Camera in my closet. Its a Model XL-1, I am tempted to list the old security camera on ebay with only the title XL-1 Camera, works great!
Because of the high R&D costs associated with designing a space probe--it on average only costs 15% of what the first one cost to build a second one. Hence this was the reason behind the dual US rovers, the second one was also free relatively speaking. I would of made a lot of sense just to have had ESA chip in and make it three rovers instead of trying to design a whole new lander on a budget that almost assured a poor outcome.
P.s. Stupidest idea of all: Not having telemetry during landing
True, but the point is not to put SS1 into orbit, it is to get in up to altitude (100km+) and release a small expendable rocket that would put a payload into orbit.
I can envision using SpaceShipOne as launch platform for a second unmanned stage that would place a small payload into LEO. The amateur's group booster on here yesterday might be able to do the job (it would go quite a bit faster at altitude as opposed to being launched though earth's atmosphere).
I have thought using an X-box based HTPC, but for the moment I need something that will scale DVDs to custom resolutions for my CRT projector--I guess I have to wait on that one.
Yeap Plasma Speakers: They put a lot of R&D into them in the 1970's--The required a lot of power to work (like 800 watts for the tweeter) and had nasty RF. The biggest problem was that these ion speakers turned all the air into room into Ozone. This ment that the ones that where made required that it be hooked up to a helium tank.
Hmm... so if the plasma antenna has variable beam width I wonder what that does for the gain of the antenna--It could replace very large traditional parabolic dishes on the transmit end. This could be great for mobile SNG satellite uplink, and also in space communications, that of course depends on the power requirements.
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ATSC Specs Allow for a 1080p@30hz, however now one has the balls to do progressive scan 1080. The key issue is that 1080@60hz is beyond the specs of MPEG-2, so to do proper 1080p requires that a new video standard (like Mpeg-4 or WMA) be used instead. Seeing that Hollywood is still in love with 24fps for some stupid reason (as if jerky motion could ever be considered artfull) this means that HD-DVD would use the same 3:2 Telecine that DVDs use today. For 1080p playback it would be a rather simple matter of just doing the same stuff progressive dvd players do today, just on a larger scale. I have a nasty taste in my mouth about Microsoft's video codec and the limited size of this purposed HD-DVD--the first thing that would go would be the film look of a movie, it really would lose a lot of its intended look.
If you go to the Pioneer site, it talks about uplinking commands to Pioneer via 200Kw transmitter....I think most space probes don't have that kind of reserve. Of course in addition there are issues with the antenna gain of them, as well as communicating with the same standard, etc. Its really just a lot easier to put low powered transmitters and smaller antenna on the bird, and just make up for it with on the earth side.
Seeing that it looks like you know quite a bit about pioneer and I can not find much about the sub systems online I have a question: What is going on with the Pioneer 10/11. I know that RTG wattage is to low to power the transmitter, but is there any part of it that is still 'on'? Also, I am under the impression that in all odds its did not fly with an onboard computer so some sort of logic based control system was used. Mind telling me a little about how the system opperated and how data was stored and sent to earth?
Vidicons where used back then. It was a real challenge to get images of the outer panels (poor lighting) with them. Galilieo was the first probe to use a CCD before that it all in the tube domain. In a related matter I actually have an old Vidicon Camera in my closet. Its a Model XL-1, I am tempted to list the old security camera on ebay with only the title XL-1 Camera, works great!
Because of the high R&D costs associated with designing a space probe--it on average only costs 15% of what the first one cost to build a second one. Hence this was the reason behind the dual US rovers, the second one was also free relatively speaking. I would of made a lot of sense just to have had ESA chip in and make it three rovers instead of trying to design a whole new lander on a budget that almost assured a poor outcome. P.s. Stupidest idea of all: Not having telemetry during landing
True, but the point is not to put SS1 into orbit, it is to get in up to altitude (100km+) and release a small expendable rocket that would put a payload into orbit.
I can envision using SpaceShipOne as launch platform for a second unmanned stage that would place a small payload into LEO. The amateur's group booster on here yesterday might be able to do the job (it would go quite a bit faster at altitude as opposed to being launched though earth's atmosphere).
I have thought using an X-box based HTPC, but for the moment I need something that will scale DVDs to custom resolutions for my CRT projector--I guess I have to wait on that one.
Yeap Plasma Speakers: They put a lot of R&D into them in the 1970's--The required a lot of power to work (like 800 watts for the tweeter) and had nasty RF. The biggest problem was that these ion speakers turned all the air into room into Ozone. This ment that the ones that where made required that it be hooked up to a helium tank.
Hmm... so if the plasma antenna has variable beam width I wonder what that does for the gain of the antenna--It could replace very large traditional parabolic dishes on the transmit end. This could be great for mobile SNG satellite uplink, and also in space communications, that of course depends on the power requirements.