2016-06-22 0:02 GMT+02:00 <announcements_at_unicode.org>:
> Important symbol additions include:
>
> - 19 symbols for the new 4K TV standard
>
> We were told that this standad is not named "4K" but "UltraHD" (UHD)...
"4K" is just a popular informal term in English medias, or used in
commercial announcements, here also in English. It is not correctly
understood everywhere, or would lead to confusion about the required
conformance level
[Basically, this does not just include a minimum resolution but also a set
of encoding technologies, support for encryption, support for several
protocols -- including support for UTF-8 as this standard is now based on
web standards -- and no longer requires the MPEG envelope, but will rather
use streaming over IP. For broadcasting, it also includes a new signal
format requiring a new hardware tuner and demultiplexer and channels will
transport more than just audio and videos, and will also have dynmically
changing parameters (resolution, color planes, supplementary planes for
stereoscopic 3D, supplentary streams for 5.1 sound, possibility of reducing
the bandwidth usage dynamically for some programs, so that channel
producers can negociate their mutual bandwidth need on the multiplex
support, and add/remove supplementary streams, including for advertzing, or
for renewing usage rights to the authorized subscribers with conforming
devices... All this is also supported on the new DVB-T2 standard for
broadcasting, but the format is designed to be transportable as well over
various networking media, including fiber, DSL, mobile internet, or relayed
over VLANs. For "4K" resolution, the requirement on devices is not just on
the tuner or demuxer, but also in terms of minimum performance level for
the codec which will also support secondary streams for error corrections,
possibly via other connections, such as correcting a received broadcast
using a separate Internet access, which may also be used to negociate and
renew decryption keys for paid programs.]
The UltraHD logo (for use on sold products) is set accordingly (and already
there's another DVB-T2 logo for hardware decoders that are still not ready
for UltraHD, but may be eligible later via firmware updates, because
existing DVB-T tuners will not be able to decode the signal even if they
support the necessary codecs and are able to display the 4K resolution).
For cable decoders or "boxes" propsoed by ISP, there are separate
specifications, but they are controled by the ISP. However they will
support the UltraHD streams and will implement the necessary virtual
networking interfaces in their router. For mobile devices, this will
support as long as you have the support for the 4G/5G network, the rest
will be a driver update or will be supported by installable apps, but the
rendering capabilities will be limited by the GPU and screen hardware.
Anyway, aren't all these logos (not "4K", but "UltraHD" and
"DVB-T"/"DVB-T2") protected by IP rights (with specific rules about their
conforming usage, and a design for the shapes) ?
Received on Wed Jun 22 2016 - 05:34:42 CDT
This archive was generated by hypermail 2.2.0 : Wed Jun 22 2016 - 05:34:42 CDT