[mythtv-users] Intermittent macroblocking on Ceton InfiniTV 6 ETH - Cure(s)?

[Douglas Sargent]

+1 on the splitter. I had purchased one at Radio Shack. When Comcast tech
came to my house to check signal he replaced mine for a free Comcast one.
He said that not all frequencies went through crappy splitters. Who knows
if it is true or not, but it worked after

On Mon, Jan 9, 2017 at 2:20 PM, Gary Buhrmaster <gary.buhrmaster at gmail.com>
wrote:

> On Mon, Jan 9, 2017 at 7:40 PM, Peter Bennett <cats22 at comcast.net> wrote:
> > ...  I have previously
> > requested Comcast to send a firmware update to my cable card, and they
> > did that immediately. In order to do that I assume there must be a two
> > way signal so that the cable card can be located on the network.
>
>
>
> OCUR devices (HDHR, Ceton) are Unidirectional (the U) devices.
> All the traffic is one way(*).  STBs can do a number of things,
> including one or two way Docsis communications (DSG), or can
> use a return path (typically in the <10MHz range) that allows them
> to send upstream data while using a one-way OOB or DSG channel.
>
> The CableCARD firmware is often sent in the OOB (low
> bitrate, low reliability) multiplex that sends the segments of the
> firmware slowly but surely (just like the OOB guide data that
> slowly, but surely get downloaded, and the code for the STB,
> which slowly, but surely, get downloaded.  And the mix also
> contains the CableCARD maps, and/or authorizations, which
> are sent....)  This data is sent over and over again (because it
> has low reliability), which can take minutes, or even hours to
> get all the segments.  Once all the required segments are
> received, the code is flashed, the maps are updated, the
> authorizations are committed.  There may be multiple
> firmwares, or maps, or authorizations for multiple devices/platforms
> being sent all the time, and your device listens for a match on
> its infromation (this allows the MSO to selectively update
> some devices).  If you really want to know the gory details,
> the SCTE and CableLabs sites can searched.  The details
> of the individual segments are manufacturer and software
> release specific (not everyone uses the same guide format
> for example).
>
>
>
>
>
> (*) Since it is one-way, any CSR that says "It looks good to me"
> is misunderstanding what they are looking at.  They have nothing
> to look at other than that there are host/data/ids in the display.
> Only STBs can call home.
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