"Broadcast and On-line Services: Search@ select@ and rightful use of content on personal storage systems (""TV-Anytime""); Part 3: Metadata; Sub-part 4: Phase 2 - Interstitial metadata (V1.5.1; Includes Diskette)"
"The present document is one in a series of Technical Specification documents produced by the TV-Anytime Forum. These documents establish the fundamental specifications for the services@ systems and devices that will conform to the TV-Anytime standard@ to a level of detail that is implementable for compliant products and services. TS 102 822-1 [1] and TS 102 822-2 [2] set the context and system architecture in which the standards for Metadata@ Content referencing@ Bi-directional metadata and Metadata protection are to be implemented in the TV-Anytime environment. TS 102 822-1 [1] provides benchmark business models against which the TV-Anytime system architecture is evaluated to ensure that the specification enable key business applications. TS 102 822-2 [2] presents the TV-Anytime System Architecture and the relationship between Phase 1 and Phase 2 technologies. These first two documents are largely informative@ while the remainder of the series is normative. The Phase 2 TV-Anytime Metadata schema is a backwards-compatible extension of the Phase 1 schema. It extends Phase 1 datatypes for content description and user description and makes use of imported datatypes from MPEG-21 to enable new areas of functionality. It also extends the TV-Anytime root document type@ TVAMainType@ to enable publication of metadata described using the new datatypes. The present document has been developed during the second phase of TV-Anytime and deals with the metadata necessary to enable interstitial replacement@ within a PDR device. The set of metadata described in the present document was selected in order to satisfy the usage scenarios listed in TS 102 822-1 [1]. The formal definitions of metadata schemas should be read in conjunction with the system specification (TS 102 822-2 [2]) defining how they could be used in an end-to-end system. TV-Anytime only defines the format for metadata that may be exchanged between various entities such as between content providers and consumers@ among consumers@ or between a third-party metadata provider and consumers. XML is the ""representation format"" used to define schemas in TV-Anytime specifications. Although XML Schema is used to define how metadata is represented in XML@ it can also be used to describe equivalent@ non-XML representations of the same metadata."