SDV Adapter Progress

Discussion in 'TiVo Series3 HDTV DVRs' started by britdiver, Apr 14, 2008.

  1. ASW

    ASW Member

    Jan 18, 2007


    And further to the point, that press release almost certainly was not issued without comment by the large cable operators and the companies (like motorola, SA, etc.) that were mentioned. Obviously issuing a press release that states a target delivery date is not a "promise" that gives anyone rights, but it was certainly designed to set expecations about when the tuning adapter/resolver would be available.
  2. CharlesH

    CharlesH Member

    Aug 29, 2002
    According to the tuning resolver specification, it also provides a channel map to the host, which overrides the one the cablecards get. The device has to speak the SDV protocol that the particular provider uses in order to get the channel to convey to the host, including dealing with the "lifetime" of the dynamic channel assignment. Sure looks like a stripped-down set-top box to me.
  3. Jimbo713

    Jimbo713 CreaTiVoty!

    Dec 25, 2001
    Richmond, VA
    Bring it on! The topic - when?
  4. Scopeman

    Scopeman 2 x Basic Roamio

    Oct 22, 2002
    Central Texas
    I've been contacted by someone at one of the test labs at Time Warner (not the local labs, the "HQ" labs, apparently) about testing one of these "tuner resolvers." Time frame I was given for the start of *my* testing of the resolver was late June to mid July. She stated that this was a new date range she had just been given - changed from the prior range of mid to late June.

    If hardware materializes, or more data is forthcoming, I'll post the details.
  5. Houtech

    Houtech New Member

    Jan 21, 2003
  6. Rolow

    Rolow Member

    Jun 1, 2004
    Does anyone know if Scientific Atlanta/ Cisco showed the STA-1520 at the show?
  7. classicsat

    classicsat Astute User

    Feb 18, 2004
    Ontario Canada.
    According to another post, yes, it was there, but not set up and demoed like the Motorola unit was.
  8. morac

    morac Cat God TCF Club

    Mar 14, 2003
    Looks pretty good. I still would prefer the not have to power another device (gonna need another UPS since I'm out of slots).

    Also I'm not sure if this is because it's a demo, but all the SDV channels are called "SWITCHED". I'm assuming that if they were real channels, they'd have the channel name instead?

    I'm hoping someone will get some video of it in action.
  9. ah30k

    ah30k Well-Known Member

    Jan 8, 2006
    Had the Mot demo been a presentation by the employees you could have seen the SDV status screens as the TiVo changed channels. The SDV demo is pretty amazing if you play the role of a cable company seeking additional bankdwidth. You can watch channels get assigned to various QAMs dynamically turning on and off as needed. The goal is to have the TiVo interface be totally transparent except for additional diagnostic screens.
  10. GoHokies!

    GoHokies! O2->CO2 Converter

    Sep 21, 2005
    That's what it sounds like:
    Sounds like this thing is completely transparent to the user. Awesome!

    It isn't quite there yet, but I'm getting the "I told you so" ready for all you naysayers that said they were never going to buy a Tivo because SDV was going to be the death of Tivo. :D
  11. AbMagFab

    AbMagFab What happened, TiVo?

    Feb 5, 2001
    And yet cable cards work just fine, and there are only two models. Amazing.

    (I'm not sure why you continue to make the point that just because they are all independent companies with different infrastructures, that coming up with a generic tuning resolver, or perhaps one Moto and one SA tuning resolver, is really that big a deal. It's all pretty much the same.)
  12. AbMagFab

    AbMagFab What happened, TiVo?

    Feb 5, 2001
    Nice! I hope the channel names aren't what the CableCo's are sending down, and this is just a demo artifact. But since they aren't all "SWITCH", it's a little disconcerting...

    And the menuing on the Moto TA, but controlled through the Tivo, seems like we could have VOD through the Tivo as well? If I recall, the menuing on the VOD is similar? But I guess that would require a VOD-Adapter...
  13. ZeoTiVo

    ZeoTiVo I can't explain

    Jan 2, 2004
    the firmware inside the cable card is not just two versions- they very likely have some differences to account for the specific cable plant they are running on.

    Plus it took a while for cable cards to come around - do you really want to wait another year or two for an SDV adapter that meets some common standard ?
  14. GBL

    GBL covert opiniative

    Apr 20, 2000
    Twin Cities, MN
  15. Breadfan

    Breadfan Member

    Jan 7, 2008
    Fort Smith, AR
    Wow, this is great news. According to the EngadgetHD article the tuning adapter should be available to cable companies in July!
    Also, looks like TiVo already has the new firmware working. I just hope the cable companies can be expeditious in rolling these things out to us.
  16. jeffshome

    jeffshome Member

    Jan 4, 2002
    Atlanta, GA
    From the Engadget HD photos the cable connects into the Tuning Adapter with a 2nd cable running back to the TiVo. Another cable (antenna) is connected directly into the TiVo.

    Will a single Tuning Adapter allow simultaneous viewing of SDV on both TiVo tuners or will we need TWO Tuning Adapters for simultaneous viewing of two SDV programs at once? Or will we be limited to one SDV channel and one non-SDV channel at the same time?
  17. cypherstream

    cypherstream Member

    Oct 27, 2007
    Reading, PA
  18. jstevenson

    jstevenson Member

    May 6, 2007
    Theoretically you should only need one, you only need one cable line for your Tivo Box.

    The way it should work is that the Tivo tells what two channels it needs via USB. The Resolver sends that back over the cable line, the node then signals those channels, and the Tivo gets the channels over the cable line to the Tivo box.

    Essentially, the Tivo sends messages to the adapter via USB, but receives the video signal one way over coax. The adapter communicates with the cable node over the coax both ways.
  19. morac

    morac Cat God TCF Club

    Mar 14, 2003
    Assuming all parties follow the spec (a valid assumption), only one adapter will be required per host.

    The spec allows the host to tell the tuning adapter how many tuners the host has and the adapter assigns a different local transport stream id (ltsid) to each tuner. The tuning request uses the ltsid so the host can request different a channel for each tuner. See section 8.6.2.

    On an unrelated note, another interesting thing in that section of the spec is that the host can tell the adapter whether or not it supports MPEG-4 so if at some point in the future the cable provider starts using MPEG-4 SDV channels and the TiVo software is updated to support MPEG-4 decoding (S3/HD have hardware support), then simply setting a bit in the initialization message to the tuning adapter will allow the TiVo to support MPEG-4 SDV channels.
  20. djwilso

    djwilso Member

    Dec 23, 2006
    Phoenix, AZ
    Thanks for posting this! It's like sweet music to my ears.

    SDV has been worrying me for more than a year now as it has the potential to render my Series3 into a brick, and this article and others have put my fears to rest.

    I hope that all of the people who are currently being affected negatively by SDV will have this solution forthcoming to them in the not-too-distant future.


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