TiVo Patents Closed Captions & Meta Data Analysis

TiVo doesn’t yet know if their injunction against DISH DVRs will hold in court, but that hasn’t stopped them from expanding their patent portfolio. In a remarkable filing with the USPTO, TiVo appears to have now won an important patent for analyzing and displaying closed caption and meta data to DVR customers. That appears to encompass enhanced TV services, including a “clip and sling” type technology and could eventually allow TiVo users to automatically remove commercials from time shifted programs.

According to patent 7,661,121, TiVo now owns the right to use existing closed caption and Enhanced Television (ETV) signaling data to create an interactive experience for their customers. ETV data is the metadata that content owners embed into their programming. It’s been used by CableLabs and is part of the fundamental architecture behind big cable’s sinking “Canoe” DVR advertising venture. While I would suspect that the cable companies also have patents related to how ETV data can be utilized, it will undoubtedly be another series of rapids that the long delayed project will have to maneuver through.

While the abstract for TiVo’s latest patent is a little vague, devling into the details you start to understand why they’d try to seize this particular piece of intellectual property. Essentially, the patent allows TiVo to sync closed captioning (and metadata) from broadcast programs recorded on a DVR and then display that data in an interactive format. This data can be as simple as a menu or closed captioned text or can be as advanced as digital video and sound effects.

From the patent,

A multimedia device may use closed-caption data patterns to recognize and synchronize to multimedia content streams. The types of data patterns available in closed-caption data are numerous. For instance, distinct data patterns may exist within the actual closed-caption text, the closed-caption control data, as well as well as any other event defined by the closed-caption data. By recognizing distinct patterns within the closed-caption data, a DVR may identify events within the multimedia content stream. One way of recognizing patterns within closed-caption data is by computing hash values representing closed-caption text and identifying patterns of hash value sequences. Thus, according to one embodiment, at a multimedia device, such as a DVR or server, the closed-caption data is parsed and hash values are generated corresponding to the closed-caption data. The hash values are then compiled into hash value sequences associated with particular video programs or segments, and further combined with metadata defining command and control information for processing at multimedia devices. These hash sequences and metadata are provided to multimedia devices such as DVRs in the form of hash value sequence data. The multimedia devices use the hash value sequence data for recognizing and synchronizing to closed-caption data. A matching algorithm is used by the multimedia device to sequentially compare generated hash values from the closed caption data with multiple hash sequences that the multimedia device has stored locally. According to one embodiment, the matching algorithm is implemented through a state machine that processes the generated hash values and reports whether or not a match has occurred with a hash sequence identified by the hash value sequence data.

While the patent was only awarded on February 9th, TiVo actually implemented portions of this technology years ago. Not only do they already offer a number of different ways to view closed caption data, but if you’ve ever watched a commercial on TiVo from one of their corporate partners, you’ve probably noticed a thumbs up icon that lets you easily subscribe to a show or order more product information. While TiVo’s current implementation of this technology is admittedly pretty limited, the patent hints that there may be more powerful features going forward.

A user can mark off sections of a multimedia program or place points of interest relating to content within the multimedia program. For example, a user may want to mark the best plays of a recording of a football game. Once the user marks the plays, he can send the resulting hash sequences to a friend’s DVR.

One of the reasons why DISH has never actually launched their clip and Sling technology is presumably because the content owners would throw a hissy fit and threatene to sue the bejesus out them, if they made it easy for consumers to share recorded content. While I don’t know the technical details behind what Sling was trying to accomplish, my sense of the project was that they wanted to let users edit other people’s content and then redistribute digital copies of those clips. The genius behind TiVo’s method is that their method wouldn’t allow anyone to “share content” that wasn’t entirely owned by the customer or TiVo.

DVR users can distribute their own sets of points of interest for programs to other users. Users can further attach metadata to each point of interest that may cause the DVR to display text to the viewer, e.g., “Isn’t this a great action scene?” The user may also attach metadata to a point of interest that tells the DVR to skip x seconds into the program from that point of interest or display x seconds of the program before skipping to the next point of interest. This allows users to create their own condensed versions of a program that they can distribute to their friends, family, classmates, students, interest group, etc.

While TiVo uses the example of a clipping highlights from a football game in their patent filing, I’m much more interested in how TiVo customers could potentially use this technology to remove commercials from YOUR programs. If both you and I have already recorded a particular show, there is no copyright violation because we’re both recording content that we already own. By allowing their users to create hash tag data, TiVo would technically own that data and would have the right to distributed that hash tag data to other DVRs without having to worry about content owners accusing them of stealing.

This would make it easy for me (or more likely someone else since I time shift everything) to easily tag all the commercials in a program and TiVo would then know to auto-skip past the content (commercials) when it saw the tags. TiVo could also use this as a way for live subscribers to tag the end of football and basketball games, so that they wouldn’t get cut off if the game went to overtime.

Another interesting embodiment of this patent would be the combination of live information with time shifted programming. Whenever I watch something a few months old, I always see commercials for upcoming TV shows or movies that are way past their expiration date. Instead of advertisers wasting their money on DVR subscribers, they could use sponsored hash tags to replace an old ad with something more current. Alternatively, if you were time shifting the news, TiVo could use your internet connection to create a live scrolling ticker that could update you on any new developments in the story.

Other potential uses that appear to be covered by the patent would include shows that have choose your own adventure type storylines. Upset about Chuck and Sarah not hooking up? the producers could give fans an alternate storyline to explore and allow viewers to vote on how they want to see the story move forward or TiVo could use this patent to create Blind Date type pop-ups around recorded television. While I tend to prefer my TV clutter free, for events like the state of the union, I can see why people would be interested in having fun facts pop up, addressing the issues that are being discussed.

While we haven’t seen any of these implementations take place today, the mere fact that TiVo was thinking about these options when they filed the patent would seem to suggest that they’ve been quietly innovating behind the scenes. This new patent award won’t necessarily help them in their case against Verizon or AT&T, but it could offer the telcos yet another reason to settle their dispute with TiVo, instead of being forced to place limits on the future of TV.

Davis Freeberg is a technology enthusiast living in the Bay Area. He enjoys writing about movies, music, and the impact that digital technology is having on traditional media. Read more at Davis Freeberg’s Digital Connection.

4 thoughts on “TiVo Patents Closed Captions & Meta Data Analysis”

  1. Nice find! Is this a patent application or has it actually been approved?

    But there’s no way in hell TiVo would let us remove commercials given their desire to keep the studios happy and the legal firestorm ReplayTV brought upon themselves. However, I could see them working with the studios and networks to replace old commercials with new commercials within recorded content…

    Also, you’re on your mark in the comparison to Clip & Sling. BeyondTV also similarly analyzes metadata for their enterprise product line. Will be interesting to see if TiVo really can patent the obvious.

  2. Not a filing, an actual patent award. TiVo filed it a few years ago and it was approved on Tuesday. Perhaps even more interesting than the question of patenting the obvious, is whether or not they can patent a legal standard. Since DVR manufacturers are required by law to support closed caption data, this could be a mandatory license if TiVo chooses to enforce it.

  3. I absolute do not like nor think it legal for them to get a Patent over a legal standard
    which they might use in a “Microsoft” way
    to take control of captions on DVR’s at the least and at worst start to claim they own a patent on all close captioning.

    It is one thing if they patent the WAY they DO it…it is wholly different if it allows them to take ownership of a Standard…

    Closed captioning is a thing that is of vital importance to those that absolute depend on such and so any close captioning should not be controlled in any way by anyone.

    To Patent how their TIVO may do closed captioning in the hardware of their DVR they use sure… but in no manner should they be able to prevent other DVR makers from using closed captions… if they try I think the NAD and the 30+ million with hearing problems would take legal actions over any attempt by any company to “microsoft” an area of providing close captions… I would want to SUE TIVO over their patent myself if they try to control captioning in a way only THEIR tech is used and only THEY are allowed have DVR’s with closed captioning etc… we hearing disabled will NOT stand for any company trying to “microsoft” away competition and so increasing costs to us for using captioning!

    I would question the patent offices issuing the patent… whoever did I’d want their finances looked at hard for birbery

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