Digital switchover

Andy Burns wrote:

Because it magically makes VCRs continue to work just as they used to.

But then you're asking it to demux 5 separate stations from a single(?)
tuner, which only the top-end boxes do (I don't know how many concurrent

Why a single tuner? DTT tuners will be dirt cheap (already are) by then,
so have a bunch of them. You only need one per mux, and several "old"
stations are going to share muxes.



--
Cheers,

John.

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In message , John
Rumm wrote


Not much more difficult that configuring an analogue system as at the
moment, espcially when the VCR modulator output needs to be moved from
Ch37

The proposal is for a box aimed at those incapable of tuning in a TV or
VCR If the user has to start changing channel allocations it defeats
the whole purpose of the box.

--
Alan
news2006 {at} amac {dot} f2s {dot} com


..

Bill Wright wrote:
"Matti Lamprhey" wrote in message
...
Here's an idea to assist the old folk with analogue switch-off. It would
require the existing analog channels to be muxed up together. Then you
could produce a very simple device with a single digital tuner which could
be plugged inline into the aerial socket of a TV or VCR and which would
demux those channels into their original pre-switchoff frequencies.

One problem would be that the device would be receiving on the same
frequency as one of its output frequencies. There are lots of other snags
that make the idea impractical.

Given most analogue tuners can auto tune these days, you could have a
fixed output frequency allocation for the box. Install, let it auto tune
the DTT, then let the TV and VCR auto tune the box.

I can see mileage in it for the folks who can't grasp the concept of
having another remote control (and more to the point, leaving the TV
remote alone!).

--
Cheers,

John.

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Lurch wrote:
On Sat, 14 Jul 2007 21:18:10 +0100, "Matti Lamprhey"
mused:

"Alan" wrote...
Matti Lamprhey wrote

I think you've missed the point. The required change would be for the
'old' analogue channels to share a single mux.
I understand this.

The device would demux
them into their old frequency positions.
The old (current) frequency positions a
From Crystal Palace BBC 1 analogue is on Ch26
From Bluebell Hill BBC 1 analogue is on Ch40
From Dover BBC 1 analogue is on Ch50
From Guilford BBC 1 analogue is on Ch40
From Reigate BBC 1 analogue is on Ch57
etc.

On which channel would your box output BBC1?
I did say in another post that the box would have to be geographically
configurable to suit the different analogue channel positions. It
seemed to me possible that it could do it automatically if installed
before analogue switchoff.

I asume you mean it would need an analyser built in to scan and decode
all existing analogue transmissions and automatically retune its five
outputs to suit, adding more complexity and cost to the unit.

If would cost v.little to store the channels keyed on digital
transmitters ID

On Sat, 14 Jul 2007 23:08:13 +0100, Stevo
mused:

Lurch wrote:
On Sat, 14 Jul 2007 21:18:10 +0100, "Matti Lamprhey"
mused:

"Alan" wrote...
Matti Lamprhey wrote

I think you've missed the point. The required change would be for the
'old' analogue channels to share a single mux.
I understand this.

The device would demux
them into their old frequency positions.
The old (current) frequency positions a
From Crystal Palace BBC 1 analogue is on Ch26
From Bluebell Hill BBC 1 analogue is on Ch40
From Dover BBC 1 analogue is on Ch50
From Guilford BBC 1 analogue is on Ch40
From Reigate BBC 1 analogue is on Ch57
etc.

On which channel would your box output BBC1?
I did say in another post that the box would have to be geographically
configurable to suit the different analogue channel positions. It
seemed to me possible that it could do it automatically if installed
before analogue switchoff.

I asume you mean it would need an analyser built in to scan and decode
all existing analogue transmissions and automatically retune its five
outputs to suit, adding more complexity and cost to the unit.

If would cost v.little to store the channels keyed on digital
transmitters ID

Ah, never thought of that.
--
Regards,
Stuart.

On 14/07/2007 22:10, John Rumm wrote:

Why a single tuner?

I queried it as I assumed use of a single tuner as this is supposed to
be a "simple" stopgap solution.

DTT tuners will be dirt cheap (already are) by then,
so have a bunch of them.
You only need one per mux, and several "old"
stations are going to share muxes.

I don't even see top-end PVRs lining up with six tuners so they can use
all muxes concurrently, let alone add in five modulators too, it's all
been decided now anyway so the BBC1/2/ITV1/Four/Five mux won't exist so
the idea is a non-starter.

"Andy Burns" wrote...
On 14/07/2007 22:10, John Rumm wrote:

Why a single tuner?

I queried it as I assumed use of a single tuner as this is supposed to
be a "simple" stopgap solution.

DTT tuners will be dirt cheap (already are) by then, so have a bunch
of them. You only need one per mux, and several "old" stations are
going to share muxes.

I don't even see top-end PVRs lining up with six tuners so they can
use all muxes concurrently, let alone add in five modulators too, it's
all been decided now anyway so the BBC1/2/ITV1/Four/Five mux won't
exist so the idea is a non-starter.

If this could be made to work, perhaps the primary beneficiary would be
the BBC which has to fund the costs of digital switchover including some
element of special assistance to impoverished old codgers. And the BBC
is certainly in a position to muck around with the muxing arrangements
at any time, after all. As we all know, these muxes can be reconfigured
with gay abandon.

Matti

"Matti Lamprhey" wrote in message
...
As we all know, these muxes can be reconfigured with gay abandon.

I thought that was a perfume.

Bill

Alan wrote:
In message , John
Rumm wrote


Not much more difficult that configuring an analogue system as at the
moment, espcially when the VCR modulator output needs to be moved from
Ch37

The proposal is for a box aimed at those incapable of tuning in a TV or
VCR If the user has to start changing channel allocations it defeats
the whole purpose of the box.

Well not really... it is a solution that could be fitted once and then
forgotten about, at a stroke making all the TVs and VCRs in the house
spring back into life with no need to learn new remotes or concepts.

I can think of a few people for who something like this would be ideal.
They can't cope with a analogue TV and separate box because the first
time they try to change channel, they reach for the TV remote and hit a
channel button. The chances or them getting back to the RGB input for
the DTV box after that are nil.

--
Cheers,

John.

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\================================================= ================/

In message , Andy
Burns wrote
On 14/07/2007 22:10, John Rumm wrote:

Why a single tuner?

I queried it as I assumed use of a single tuner as this is supposed to
be a "simple" stopgap solution.

DTT tuners will be dirt cheap (already are) by then, so have a bunch
of them. You only need one per mux, and several "old" stations are
going to share muxes.

I don't even see top-end PVRs lining up with six tuners so they can use
all muxes concurrently, let alone add in five modulators too, it's all
been decided now anyway so the BBC1/2/ITV1/Four/Five mux won't exist so
the idea is a non-starter.


The proposed box wouldn't be simple or cheap but my PVR can record or
record/view two channels from the same MUX in parallel so to extract the
5 existing analogue channels in parallel would only take 3
tuners/decoders.
--
Alan
news2006 {at} amac {dot} f2s {dot} com