Thursday, September 5, 2013

What are some direct connections between science fiction and future technology?

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Scarlet


example::
Star Trek influenced the flip cell phone

any others?



Answer
Star Trek also predicted:
1.) Computers using floppy disks and removable media. Mr Spock's science station...

2.) Ethnic and Gender diversity. Consider the original series was produced in mid sixties.

3.) Space Exploration, remote probes, space stations

4.) Video Teleconferencing. Consider just about every episode used the main viewer to have real time images and dialog. Now we can easily do this with web cams on our PCs

5.) Computers that can talk, granted that S.T. computer can also understand speech Voice recognition is available in cell phones. And we have software that can type words we say (dragon Naturally Speaking) . PCs today aren't quite fully conversant, yet....

6.) Tablet PC's or PDA's. The electronic clip board that Yeoman Rand has Captain Kirk sign....



Arthur C Clarke predicted:

1.) Telecommunication satellites , he came up with this idea in 1945 !!!
2.) The end of long distance telephone charges - not 100% there yet but many of us now have toll free calling plans on cell phones and you can make toll free calls on a PC.
3.) Digital photography. Movie 2001 has a scene where members of a conference are being photgraphed. The photographer is using a small camera which doesn't make a sound ( no mechanical shutter)

Robert Heinlein:
1.) conceived the waterbed and the people mover (moving side walk) typically used now in airports.


Sci Fi has also predicted:
1.) Bio Metric identification, computer finger/hand print scan, retinal scans, voice print indentification/recgonition
2.) Large Flat panel TV screens (Farenheit 451)
3.) that we as a society would watch alot of TV
4.) âForbidden Planetâ from 1956 predicts holographs, 3d images....





Comming Soon a floating city a'la waterworld ( see link)

10 Points + 5 Stars How do I know if my TV can get broadcasts signals other than MPEG-2?




Jun-O


Is there a website or some way I can tell if my TV set can receive broadcasts in other video encodes than MPEG-2?

Or at least by brand for example LG, Sony, etc what LCD, LED, Plasma etc TVs can get, lets say, MPEG-4 broadcasts
If a TV, lets say LG can handle Mp4 through USB it means it can handle it from TV broadcasts, right?

Another question, MPEG-2 as broadcast standard won't be replaced by other format like MPEG-4 right?

HD tv (up to 1080p) will be broadcasted always in MPEG-2, is that correct?

What format will 4k Television broadcasted in?
I want to know this



Answer
back to first. there is no reason to broadcast 4K video, as 1080 (1k) is already the limiting visual resolution for a display small enough to fit in your house. 4K is strictly for theatrical projection, and was developed by Kodak for the film industry several decades ago. The only thing new about 4k is now it is possible to manufacture CCDs with that many pixels so you can originate content with a video camera instead of scanning film frames.

ATSC standards for digital television specifies MPEG2 as the compression format. i doubt that will change although there may be extension in the meta data to allow 3D and other applications. If a new format were accepted, broadcasters would not use it because they would lose 99.9% of their current viewers with legacy TV sets. look at how long the transition from analog to digital took. MPEG2 itself is not limited to 1080 line, it was that ATSC does not have a higher line rate for TV sets. ATSC had to "trick" MPEG2 to accept 1080 line because all MPEG methods are based on 16x16 pixel macro blocks. notice that 1080 is not a multiple of 16, so television broadcast is actually 1088 lines with the top and bottom 4 lines not displayed. this was done so that the pixels per line (1920) was a multiple of 16 when using 16x9 widescreen aspect. Broadcasters wanted a digital HD format somewhere near 1k because at the time we already had 1k analog HD. MPEG2 can compress 4k with no problem but just not for broadcast.

MPEG4 besides being much lower quality (look at the GOF and chroma sampling specifications) is optimized for super compressed asynchronous file based delivery. So it works best as packets on the internet, or files on a USB thumb drive, it is not intended for robust continuous streaming like broadcast. it might look ok for some movies (much like Blu-ray), but your favorite football or sports game would just be a blur because of long and fixed GOF structure. Newer is not always better.




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