[opendtv] Re: TV and Emergency Alerts question
- From: "Barry Wilkins" <barry.barrywilkins@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 1 Jun 2006 08:38:42 +1200
I wish to clarify that being "off" may or may not mean isolation from the
mains supply. It is entirely possible to have remote command detection and
mains (relay) switch-on using circuitry that draws sub uA currents from a
back up cell. Such capability alleviates the concern that TVs and other
equipment may accidentally catch fire when the owners assume they are
electrically isolated from the mains.
Barry wilkins
On 6/1/06, John Shutt <shuttj@xxxxxxxxx> wrote:
>
> There might have been a television set that could do so, but I've never
> heard of one. I've heard of plenty of weather radios that will "turn on"
> (actually just unmute) when they receive a NWS alert tone.
>
> As for a receiver that is never truly off, think about sets with
> Starsight/TV Guide EPGs built in. They use the "off" time to tune to
> their
> local PBS station and update their EPGs. Also, some circuitry in your
> television, VCR, DVD, audio receiver, etc. never turns off, otherwise you
> could never use the remote control to turn them "on" again.
>
> John
>
> ----- Original Message -----
> From: "John McClenny" <jamcclenny@xxxxxxxxx>
>
>
> >I was told that the (US) Emergency Alert tones inserted into a broadcast
> >can
> > turn on a TV. I asusme that if this is true, it would have to be a
> > receiver
> > that was never really off.
> > Anyone know if this capability is real?
> >
> > thanks!
> >
> > John McClenny
>
>
>
>
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