Re: Two HDTV tuners
From: JW (anonymous_at_Nospam.Iam)
Date: 12/09/04
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Date: Thu, 9 Dec 2004 08:19:19 -0800
I know that you do not need a cable card to receive the over the air
channels via cable since the cable companies are not allowed to encrypt
those channels.
I don't know of any ATSC/QAM MCE compatible cards at this time but I
suspect that when they are available that some of them will also support a
cable card to cover a broader market.
I have had a Motorola 6412 since before they had its dual tuner software
available so I am totally aware of its capabilities and have lived through
its fixing its problems being able to successfully process and record 2 HDTV
channels at the same time.
I also monitor many of the AVS Forum forums daily.
Yes, I should have said it MAY be a hardware restriction and not that it IS
a hardware restriction.
"dking" <dking@discussions.microsoft.com> wrote in message
news:3A69F24F-C247-417B-9857-F1179972477A@microsoft.com...
>I don't need a cable card enabled tuner to receive local HDTV channels from
>a
> cable provider! QAM HDTV tuners exist today and can be used in MCE
> computers[1][2]. Have you read any of the links I've provided? OTA HDTV
> is
> not the only option for MCE!
>
> DirecTV Tivo[3] and the Motorola DCT6412 [4] can handle two HDTV signals
> while playing back a recorded HDTV show. That hardware is no where near
> as
> powerful as the MCE computers available today. So I highly doubt it's a
> hardware limitation.
>
> [1]
> http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=401229&perpage=20&pagenumber=24
> [2] http://www.amdpower.com/sections.php4?op=viewarticle&artid=112
> [3] http://www.directv.com/DTVAPP/imagine/TIVO.dsp
> [4] http://broadband.motorola.com/dvr/
>
>
> "JW" wrote:
>
>> I totally agree with everything in your post. I was just pointing out
>> that
>> HDTC tuner cards for MCE can only receive OTA signals as you state.
>> I also agree I certainly would not use an HD STB with S-Video out to a PC
>> since the signal is downgraded.
>> I know of no way with current products to meet your requirements.
>> Possibly at the CES in January some company will announce an MCE
>> compatible
>> card with a QAM tuner that can also accept a Cable Card for digital
>> broadcasts.
>> I believe the current restriction to one HDTV tuner card is due the disk
>> and
>> CPU bandwidth required to concurrently receive 2 HDTV broadcasts.
>>
>> "dking" <dking@discussions.microsoft.com> wrote in message
>> news:DE2FCC8D-4FF5-49F1-8AD2-B45D348CD456@microsoft.com...
>> > Yes, HDTV tuners can receive HDTV channels from cable:
>> > http://www.avsforum.com/avs-vb/showthread.php?s=&threadid=401229&perpage=20&pagenumber=24
>> > http://www.amdpower.com/sections.php4?op=viewarticle&artid=112
>> >
>> > The tuner just has to be able to decode a QAM signal. OTA HDTV uses
>> > 8VSB
>> > modulation. Most cable companies use QAM-64 or QAM-256 modulation to
>> > transmit the local HDTV channels. They encrypt the premium channels
>> > (HBO),
>> > that's why you need the STB to watch those channels. Most tuner cards
>> > currently available only support an OTA 8VSB HDTV signal.
>> >
>> > I don't use STBs. I only need my local channels. If I have an HDTV
>> > ready
>> > television, why would I want to watch a downscaled signal?
>> >
>> > Now, back to my original question...
>> >
>> > Officially, Microsoft says MCE 2005 only supports a single HDTV tuner.
>> > Does
>> > anybody know the reason for this limitation? The Green Button's
>> > knowlegebase[1] gives me some hope that two HDTV tuners can actually be
>> > used.
>> > Has anybody been successful with two HDTV tuners?
>> >
>> > What I'd like to do is have two DVICO FusionHDTV3 Gold QAM cards[2] to
>> > get
>> > my local HDTV channels from cable (Comcast). My over-the-air reception
>> > is
>> > really bad.
>> >
>> > [1] http://www.thegreenbutton.com/kb/article.aspx?id=10591
>> > [2] http://www.digitalconnection.com/Products/Video/fusion3qt.asp
>> >
>> > Thanks
>> >
>> > "JW" wrote:
>> >
>> >> HDTV tuners can only receive HDTV from OTA stations. You can use 2
>> >> NTSC
>> >> tuners that receive S-Video from 2 HD cable TV STB's, of course than
>> >> your
>> >> are only getting the HDTV signals as downscaled to SD S-video.
>> >>
>> >> "dking" <dking@discussions.microsoft.com> wrote in message
>> >> news:C08EFB52-E929-4B94-A3FF-F902AA288405@microsoft.com...
>> >> > Officially, Microsoft says MCE 2005 only supports a single HDTV
>> >> > tuner.
>> >> > Does
>> >> > anybody know the reason for this limitation? The Green Button's
>> >> > knowlegebase[1] gives me some hope that two HDTV tuners can actually
>> >> > be
>> >> > used.
>> >> > Has anybody been successful with two HDTV tuners?
>> >> >
>> >> > What I'd like to do is have two DVICO FusionHDTV3 Gold QAM cards[2]
>> >> > to
>> >> > get
>> >> > my local HDTV channels from cable (Comcast). My over-the-air
>> >> > reception
>> >> > is
>> >> > really bad.
>> >> >
>> >> > [1] http://www.thegreenbutton.com/kb/article.aspx?id=10591
>> >> > [2] http://www.digitalconnection.com/Products/Video/fusion3qt.asp
>> >> >
>> >> > Thanks
>> >>
>> >>
>> >>
>>
>>
>>
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