High Definition TV – old style

Mike Jordan

I just had to buy this 1949ish book on the bookstall under Waterloo Bridge and found the attached. Something for engineers and sound persons alike!

tell_Me_why_cover

(click on cover above to see the appropriate selected pages!)

I’d like to point out the words under the “receiver of the future” bit where it suggests that in future one might be able to control one’s “set” by voice control.

Amazing bit of Crystal Ball gazing.

Jeff Booth

Just thought I’d throw this into the arena….

HiDef_TV_Hist_001

In my opinion …

3D is pointless (it has only been pushed by the film studios because it defeats the piraters with camcorders in the cinemas)

UHD is also ‘emperors new clothes’ as the human eye cannot resolve images greater than around 2K. Punters will buy it because they don’t know any better. They will then get duped again by 8K and above.

The broadcasters may well originate some 4K (sport etc.) so they can get better framing by zooming into the 4K image (maybe because the camerachildren have no experience)

Action replays will only look better if a higher frame rate is used (not higher resolution images)

Finally it is interesting that in the early days of TV (when camera tubes were flat and CRTs were curved) much work was done to remove the distortion. Now we have flat screen TVs, there is a step backwards to curved ones (in the wrong direction) – having a concave screen implies there is a ‘sweet spot’ for optimal viewing position. Great for the living room!

Mike Jordan

Test Card as seen on a wall of a railway arch in Battersea!
Not sure it is 4K let alone SD.

HiDef_TV_Hist_002

Brian Curtis

Perhaps this is the definitive book on Test Cards?