NG
That must be a nice thing to be woken up by! Especially if you don't live in one of the areas the tsunami warning covers.
AIUI, that "chattering" is actually a data transmission. Provided that people are receiving their local version on NHK, then their TVs shouldn't switch on if a warning doesn't apply to them.
Oh, is NHK regional then, or at leasts regional as far as the "wake up" transmission is concerned? That's interesting, I was under the impression it was a totally national network.
I don't know how the data transmission thing works to power on the TVs, unless the satellite/cable/Japanese version of Freeview receivers can pass it through to the TV, since its probably safe to assume analogue TV isn't a thing now? It sounds like the sort of thing that would have been easy to do on analogue, but complicated on digital?
In Japan - a lot of TVs have integrated satellite and terrestrial tuners (and I think cable) and the required smart card slots. I suspect the TV itself receives the main required channel when it's in standby and will switch on - or if it's set top box based, the TVs switch on when an HDMI signal asserts, or sends a CEC power-on and input switch command, via a given HDMI input (a bit like Sky boxes can switch on a connected TV and switch them to the right input)?
noggin
Founding member
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That must be a nice thing to be woken up by! Especially if you don't live in one of the areas the tsunami warning covers.
AIUI, that "chattering" is actually a data transmission. Provided that people are receiving their local version on NHK, then their TVs shouldn't switch on if a warning doesn't apply to them.
Oh, is NHK regional then, or at leasts regional as far as the "wake up" transmission is concerned? That's interesting, I was under the impression it was a totally national network.
I don't know how the data transmission thing works to power on the TVs, unless the satellite/cable/Japanese version of Freeview receivers can pass it through to the TV, since its probably safe to assume analogue TV isn't a thing now? It sounds like the sort of thing that would have been easy to do on analogue, but complicated on digital?
In Japan - a lot of TVs have integrated satellite and terrestrial tuners (and I think cable) and the required smart card slots. I suspect the TV itself receives the main required channel when it's in standby and will switch on - or if it's set top box based, the TVs switch on when an HDMI signal asserts, or sends a CEC power-on and input switch command, via a given HDMI input (a bit like Sky boxes can switch on a connected TV and switch them to the right input)?
Last edited by noggin on 30 November 2020 12:18pm - 2 times in total