Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
  • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
  • H04N21/84—Generation or processing of descriptive data, e.g. content descriptors
  • H04N21/8405—Generation or processing of descriptive data, e.g. content descriptors represented by keywords
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
  • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
  • H04N21/235—Processing of additional data, e.g. scrambling of additional data or processing content descriptors
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
  • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
  • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
  • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
  • H04N7/00—Television systems
  • H04N7/16—Analogue secrecy systems; Analogue subscription systems
  • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
  • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only

Definitions

• the present invention relates, in general, to an encoded multi-key index data stream structure for locating composite index keys of digital contents metadata and, more particularly, to an index data stream structure containing a fragment of multi-key indices encoded for XML metadata for digital contents defined in the TV-Anytime Forum (hereinafter referred to as "TVA metadata") so as to allow composite index keys for metadata to be efficiently located when TVA metadata is transported in an independent unit so called a fragment.
• TVA metadata TV-Anytime Forum
• the TV- Anytime Forum is a civil organization for standardization, established in September 1999. with an aim of developing standards for providing audio and visual related services in a user environment such as a PDR (personal digital recorder) having a high volume storage for personal purpose.
• PDR personal digital recorder
• the TV-Anytime Forum is designed to enable all the users to listen and view TV programs in various forms (e.g., existing broadcasting services and on-line interactive services, etc.) in any desired manner and at any desired time on the basis of the personal storage.
• the structure comprises: 1. Index list (index_list) section
• the index list (index_list) section provides a list of all the multi-keys being transported.
• num_fields are included within each index list (indexjist) structure so as to enable multi-key indexing as suggested in Table 1.
• an object of the present invention is to provide an encoded multi-key index data stream structure useful for locating composite index keys of digital contents metadata.
• the present invention provides an encoded multi-key index data stream structure of digital contents metadata, wherein a mandatory index list required for the TV-Anytime is specified and a key of the index belonging to the mandatory index list is assigned an encoded value without using an XPath. Therefore, the present invention features that only an encoded value is assigned even when the index key is comprised of several multi fields.
• An encoding value is assigned to each index according to an index key, in which the encoding value can contain information about a fragment thereof.
• a multi-key is treated as a composite index key, but a specified multi-key is assigned an encoding value as same as in a single key. 0x0000 may be assigned to an unspecified field so as to index an arbitrary fragment.
• a synthesized index key not existing within a fragment may be used.
• the synthesized key is composed by a combination of key fields existing within the fragment. For example, it is desirable to provide an index for a multi-key of ⁇ serviceld, PublishedTime, EndTime> for a BroadcastEvent fragment, wherein no key field exists for 'Endtime.' In this case, 'EndTime' may be synthesized by combining 'PublishedTime' and 'PublishedDuration.' To provide the mandatory index list as described above, the following structures are necessary. In the above indices, the key field XPath or key field encoding is not required. 1. index_list section Table 2
• index_descriptor_length length of each index_descriptor fragment ype: encoding value of a fragment type fragment_XPath_ptr: xpath pointer of a fragment not encoded keyjdentifier: a value of encoding an index key num_fields: number of key fields of index keys not encoded field_xpath_ptr: a xpath pinter of each key field of index keys not encoded field_encoding: an encoding type of each key field of index keys not encoded index_container: a container id containing an index structure index_identifier: an ID of the concerned index structure
• the key_index section and multi_field-sub_index section as described above may be of the same as the conventional sections or a part thereof may be modified according to the above list and the index list section.
• the multi-key index data stream structure provides an encoded value, for which it does not need to separately specify an XPath and an encoding method relative to each index key, thereby decreasing the overhead on the receiver side.
• the field not belonging to a fragment subject to being indexed can be specified with a key, thereby capable of generating a user-centered field.

Landscapes

• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Signal Processing (AREA)
• Computer Security & Cryptography (AREA)
• Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
• Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Applications Claiming Priority (5)

Publications (2)

Family

ID=30772294

Family Applications (1)

Country Status (7)

Families Citing this family (1)

Family Cites Families (7)

• 2003
  • 2003-06-27 EP EP03765378A patent/EP1523720A4/de not_active Ceased
  • 2003-06-27 JP JP2005505492A patent/JP2005531091A/ja active Pending
  • 2003-06-27 AU AU2003243044A patent/AU2003243044A1/en not_active Abandoned
  • 2003-06-27 WO PCT/KR2003/001262 patent/WO2004010333A1/en not_active Ceased
  • 2003-06-27 CN CNA038066394A patent/CN1643521A/zh active Pending
  • 2003-06-27 GB GB0418482A patent/GB2400955B/en not_active Expired - Fee Related
  • 2003-06-27 RU RU2004127225/09A patent/RU2303285C2/ru not_active IP Right Cessation

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