TV license from Thomsons SA & RCA

It said all TV (regardless mono or colour, analogue or digital) suppliers
must pay the TV license fee to Thomsons SA & RCA for each unit on sale due
to the fact that TV was invented by them and they own the patent. Can
anyone know the detail about it. I am wondering the patent should expire
already since TV was invented for many years. Any senior one can share the
knowledge about it!

Thanks,

Scott

In article ,
Scott wrote:
It said all TV (regardless mono or colour, analogue or digital)
suppliers [...]

What said that?

RCA was involved in TV patent disputes in the 1930s. It lost.

-- Richard
--
In the selection of the two characters immediately succeeding the numeral 9,
consideration shall be given to their replacement by the graphics 10 and 11 to
facilitate the adoption of the code in the sterling monetary area. (X3.4-1963)

"Scott" wrote in message
...
It said all TV (regardless mono or colour, analogue or digital) suppliers
must pay the TV license fee to Thomsons SA & RCA for each unit on sale due
to the fact that TV was invented by them and they own the patent. Can
anyone know the detail about it. I am wondering the patent should expire
already since TV was invented for many years. Any senior one can share
the knowledge about it!

Thanks,

Scott

Electronic TV was invented by EMI* in the mid 1930's and started public
broadcasting in 1936.

The signal system for analog TV is based on this, but obviously the original
patents would have run out over fifty years ago!

UK patents max 20 years, US 16 years IIRC.


* Electric and Musical Industries Ltd - registered in England no.53317.

In article ,
R. Mark Clayton wrote:

"Scott" wrote in message
...
It said all TV (regardless mono or colour, analogue or digital)
suppliers must pay the TV license fee to Thomsons SA & RCA for each
unit on sale due to the fact that TV was invented by them and they own
the patent. Can anyone know the detail about it. I am wondering the
patent should expire already since TV was invented for many years.
Any senior one can share the knowledge about it!

Thanks,

Scott

Electronic TV was invented by EMI* in the mid 1930's and started public
broadcasting in 1936.

The signal system for analog TV is based on this, but obviously the
original patents would have run out over fifty years ago!

UK patents max 20 years, US 16 years IIRC.


* Electric and Musical Industries Ltd - registered in England no.53317.

Thompson own the patent for SECAM which might still be in force since it
dates from 1965/6.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11

Charles,

Thanks! Is SECAM used in France or they are running special system that has
very long valid date?

Regards,

Scott

"charles" ¦b¶l¥ó
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In article ,
R. Mark Clayton wrote:

"Scott" wrote in message
...
It said all TV (regardless mono or colour, analogue or digital)
suppliers must pay the TV license fee to Thomsons SA & RCA for each
unit on sale due to the fact that TV was invented by them and they own
the patent. Can anyone know the detail about it. I am wondering the
patent should expire already since TV was invented for many years.
Any senior one can share the knowledge about it!

Thanks,

Scott

Electronic TV was invented by EMI* in the mid 1930's and started public
broadcasting in 1936.

The signal system for analog TV is based on this, but obviously the
original patents would have run out over fifty years ago!

UK patents max 20 years, US 16 years IIRC.


* Electric and Musical Industries Ltd - registered in England no.53317.

Thompson own the patent for SECAM which might still be in force since it
dates from 1965/6.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11

"Scott" wrote in message
...
Charles,

Thanks! Is SECAM used in France or they are running special system that
has very long valid date?



The analogue satellite signal on 5w is in Secam.


--
Michael Chare

charles wrote:
Thompson own the patent for SECAM which might still be in force since it
dates from 1965/6.

That was greater than 40 years ago. Patents, as the post you were
replying to noted, do not exceed 20 years in the UK or US. In fact this
limit is true of every significant jurisdiction in the world due to
international agreements on such matters.

ESB

In article ,
Scott wrote:
Charles,

Thanks! Is SECAM used in France or they are running special system that
has very long valid date?

SECAM (SECquence Avec Memoire) (or commonly: Systeme European Contre les
AMericaines) is a French developed colour system that is broadcast in
France, most of its former colonies and was adopted (for political
reasons) by the Soviet Union (USSR). I'm not sure how much of that former
empire still uses SECAM - Russia still does.

Colour television broadcasting began in France in 1968 and pictures from
the Winter Olympics in Grenoble originated in SECAM.

--
From KT24 - in "Leafy Surrey"

Using a RISC OS computer running v5.11

charles wrote:

SECAM (SECquence Avec Memoire) (or commonly: Systeme European Contre les
AMericaines) is a French developed colour system that is broadcast in
France, most of its former colonies and was adopted (for political
reasons) by the Soviet Union (USSR).

Not entirely political, there was a good technical reason too, some of
the signal paths are incredibly long in Russia/ex-USSR.
SECAM is better suited than PAL or NTSC because the chrominance signal
exists in the FM domain, and therefore will not degrade as rapidly as AM
based PAL and NTSC colour coding.

I'm in an ex-Soviet country right now, and my hosts verify it was more
of a technical decision than political (according to them :-) ).

In message , Mark Carver
writes
charles wrote:

SECAM (SECquence Avec Memoire) (or commonly: Systeme European Contre les
AMericaines) is a French developed colour system that is broadcast in
France, most of its former colonies and was adopted (for political
reasons) by the Soviet Union (USSR).

Not entirely political, there was a good technical reason too, some of
the signal paths are incredibly long in Russia/ex-USSR.
SECAM is better suited than PAL or NTSC because the chrominance signal
exists in the FM domain, and therefore will not degrade as rapidly as
AM based PAL and NTSC colour coding.

I'm in an ex-Soviet country right now, and my hosts verify it was more
of a technical decision than political (according to them :-) ).

But aren't things like microwave links FM anyway? Also, at one time,
some long-reach CATV trunk lines used to transport FM TV signals (a bit
like analogue satellite).

Haven't some of the ex-Soviets now switched to PAL?
--
Ian