[opendtv] Re: Terrayon 7000 Manuals ?
- From: "Donald Koeleman" <donald.koeleman@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sat, 30 Jul 2005 01:31:49 +0200
Now, I would have too go and google as to what a bit bucket is. The Imedia
(and various corporate names following that, through acquisition, licensing,
co-marketing and so on, funilly they where taking on GI, which became the
first licensee to the Cherrypicker) Cherrypicker is a 'real-time'
statistical re-multiplexer, allowing for bit-rate adjustments of MPEG2
videostreams by re-quantisation. Many years ago ('97?) they had booked a
conference room at the local Hilton during IBC to demo their original system
(still the GI systems version), which they would go show at the main
satellite tv platform operators/broadcasters, like Canal +, following their
Amsterdam visit. Anyway it was a different concept, but also based on
statistical multiplexing.
It centered around centralized play-out and content origination/channel
aggregation as it looked a head across a provider's channels' content for 24
hours and following that compressing all of it so it would fit nicely in the
available transponders, offering the maximum video quality given the
available transponder capacity, assigning less bandwidth to less demand
content and more to harder to compress material, evening out across a number
of channels.
So, all material for the next 24 hours would get compressed and stored on
servers awaiting play-out. This approach presented the with several
difficulties in selling their product(s), the big operators that would
benefit from such a large scale set-up and at the time demanding storage
systems (basically any serious play-out still relied on tape), all-ready
were up and running with real-time encoding systems. Content is often
partially live, and thus can not be pre-processed, origination of channels
on a platform is not always from the same location/play-out/uplinkservice
provider, and so on.
Somehow this plan was quickly abandonned following this presentation and
replaced with the first commercially available statistical remultiplexer,
the Cherrypicker, a dedicated machine to take one or more programme streams
from a (multiple) mpeg ts combining them and making them fit into a new
transportstream. This has become standard technology on many vendors'
head-end and compression equipment, like that of Tandberg, but they still
market it for dedicated jobs, including occassions where the bitrate
reduction required is fairly large.
Of course, the original expectations uttered that it would go into the many
local cable-head-ends to come up with the local channel line up, didn't come
to live, as the number of head-ends decreased dramatically, and digital
cable in Europe has been slow(er) to take-off, but it has become a well
known and established piece of equipment in digital broadcasting.
Donald
----- Original Message -----
From: "Lindhoff, Andrew" <axl1@xxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Friday, July 29, 2005 8:22 PM
Subject: [opendtv] Re: Terrayon 7000 Manuals ?
John:
John:
I have been in a combination of broadcast and industrial television for
40 years, and I have never heard of anything being called a Cherry
Picker before except a bucket truck. Since bucket trucks are often used
in TV Production, especially so in Industrial Television, it wouldn't
have been off-target at all to have included it on this list. I suppose
I should have taken a shot at cable television at some point in my
career, but the thought never struck me to do so. So, I guess that
there is very possibly a whole slug of TV literacy which has been denied
to me. But, being the helpful little soul that I always try to be, if
your associate ever does purchase a bucket truck, he or she might just
be able to pick-up the shop manual for it on Ebay.=20
Drew Lindhoff. =20
-----Original Message-----
From: opendtv-bounce@xxxxxxxxxxxxx [mailto:opendtv-bounce@xxxxxxxxxxxxx]
On Behalf Of John Willkie
Sent: Friday, July 29, 2005 1:34 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Terrayon 7000 Manuals ?
Drew;
I guess I should have explained just a bit more. First, the associate
did buy the unit on Ebay.
A Terayon Cherry Picker (www.terayon.com) is a box that takes in
multiple transport streams, processes the tables and streams, and
permits one to output to multiple transports streams. They're used by
broadcasters and cable TV systems.
Me trying to work with a cherry-picker to get up a pole: that's a
priceless image. I gave up those dreams with my childhood. I think
such a request would have been at least slightly off-topic.
John Willkie
----- Original Message -----=20
From: "Lindhoff, Andrew" <axl1@xxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Friday, July 29, 2005 6:56 AM
Subject: [opendtv] Re: Terrayon 7000 Manuals ?
> John:
>
> I am not sure just how esoteric a manual for a Terayon 7000 Cherry=20
> Picker would be, but has your friend thought of trying Ebay? They=20
> have service and operators manuals for a great many different kinds of
> equipment both old and new. I have picked-up manuals for 30 year old=20
> pieces of test equipment, and recently was searching Ebay for a shop=20
> manual for a 1998 GMC Jimmy SUV. I am not sure whether or not truck=20
> manuals (I am assuming that the Terayon 7000 is a bucket truck) could=20
> be found on Ebay, but, hey, it might be at least worth a try.
>
> Drew Lindhoff. =3D20
>
> -----Original Message-----
> From: opendtv-bounce@xxxxxxxxxxxxx=20
> [mailto:opendtv-bounce@xxxxxxxxxxxxx]
> On Behalf Of John Willkie
> Sent: Thursday, July 28, 2005 10:17 PM
> To: opendtv@xxxxxxxxxxxxx
> Subject: [opendtv] Terrayon 7000 Manuals ?
>
>
> A friend of mine has taken delivery of a Terayon 7000 Cherry Picker.=20
> Unfortunately, the unit is no longer supported by Terayon. He has the
> installation manuals, but none others. After many weeks of work, he's=20
> built a controller unit and interfaced it to the cherry picker.=20
> Unfortunately, it appears that he doesn't have the full system
> operating: no tables, no ability to define program services or program
> streams.
>
> Does anyone have a pdf or printed user/operations or technical for one
> of these puppies?
>
> Any help would be appreciated.
>
> John Willkie
> =3D20
> =3D20
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=20
=20
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