Interactive video distribution systems – Video distribution system with local interaction
Reexamination Certificate
2000-03-03
2004-03-16
Miller, John (Department: 2614)
Interactive video distribution systems
Video distribution system with local interaction
C725S138000, C725S139000, C725S140000, C725S086000, C725S146000
Reexamination Certificate
active
06708338
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus and method for generating a broadcast interoperable protocol (BIOP) message and in particular, to an apparatus and method for generating a broadcast interoperable protocol message in order to effectively generate a broadcast interoperable protocol message from a data/object carousel in a data server.
2. Description of the Background Art
Recently, as the standards for digital TV have been provided, broadcast protocols based on them are being implemented. A digital storage media-command control (DSM-CC) object carousel among the above protocols plays a role in repeatedly transmitting a series of objects from a broadcast server to a client. At this time, data or properties of the objects in the object carousel are transmitted in a message, and this message is referred to as a broadcast interoperable protocol (BIOP) message. The BIOP message includes a service gateway, a directory, a file and a stream message.
The objects (a service gateway, directory, file and stream message) in the object carousel are constructed as a tree structure, in which the location of each object is judged by its parent node, and the parent node stores information on the objects belonging to its directory.
FIG. 1
illustrates a tree structure of objects in an object carousel, wherein a service gateway has a directory object below itself, and the directory has a file, a stream, and other directory objects below itself.
In order to process the objects in the above tree structure and transmit them to a client, a protocol in accordance with the conventional art generates an object carousel as a BIOP message in the form of individually constituting a route from a parent node to a target object for each object. Therefore, the BIOP message not only increases the size of data to be transmitted from a server to a client, but also accordingly generates a broadcast interoperable protocol in a noneffective way.
Meanwhile, a definite protocol has not been defined yet in constituting a BIOP message which forms an object carousel from the objects in the above tree structure.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the present invention to provide an apparatus for generating a broadcast interoperable protocol capable of effectively generating a broadcast interoperable protocol (BIOP) when a data broadcast server implements a data/object carousel.
It is another object of the present invention to provide a method for generating a broadcast interoperable protocol capable of effectively generating a broadcast interoperable protocol when a data broadcast server implements a data/object carousel.
In order to achieve the above objects, the apparatus for generating a broadcast interoperable protocol message in accordance with the present invention includes a data/object carousel manager for periodically outputting cyclic data and transmitting the same upon receipt of a broadcast signal in accordance with the present invention, a stream server for outputting audio/video data, and a remux unit for outputting remultiplexing data to a client upon receipt of the cyclic data and the audio/video data.
In order to achieve the above objects, in a broadcast interoperable protocol message for transmitting a series of objects in a broadcast server to a client, the method for generating a broadcast interoperable protocol message in accordance with the present invention includes the steps of classifying the series of objects as a module, obtaining an interoperable object reference (IOR) to the objects, and forming the objects in a single broadcast interoperable protocol message.
Additional advantages, objects and features of the invention will become more apparent from the description which follows.
REFERENCES:
Balabanian, V. Casey, L. Greene, N. Adams, C., IEEE Communications Magazine, On page(s): 122-127, vol.: 34, Issue: 11, Nov. 1996.*
Crinon, R.J., Consumer Electronics, 1997. Digest of Technical Papers. ICCE., International Conference on, On page(s): 246-247, Jun. 11-13, 1997.*
Atzori, L. De Natale, F.G.B. Gregorio, M.D. Giusto, D.D., Dept. of Electr. & Electron. Eng., Cagliari Univ.; Broadcasting, IEEE Transactions on, On page(s): 383-392, vol.: 43, Dec. 1997.
Birch & Stewart Kolasch & Birch, LLP
LG Electronics Inc.
Ma Johnny
Miller John
LandOfFree
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