Reception Apparatus Data Carousel Control Information Management
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Solution Overview
Problem
Current digital broadcasting technologies lack a technical scheme for transmitting various data using broadcast waves, particularly for hybrid-type broadcasting that combines broadcast waves with communication, requiring control information for linking broadcasting and communication.
Innovation Solution
A reception apparatus and method that utilize the data carousel transmission scheme to transmit control information for controlling application programs executed with broadcast content, where the control unit identifies and processes control information from a data descriptor in the Program Map Table, managing priority and activation of application programs and data-broadcast content.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the data carousel transmission scheme is used to transmit control information for hybrid broadcasting, then the transmission of various data via broadcast waves is enabled, but the complexity of the reception apparatus increases due to the need to process multiple data types and descriptors
Solution Approach 1:
The patent segments control information into different types (application program control information and data-broadcast content control information) and transmits them through separate descriptors (additional_data_descriptor and data-encoding-scheme descriptor). This segmentation allows the reception apparatus to process different control information types independently, reducing overall processing complexity while enabling versatile data transmission.
Solution Approach 2:
The patent introduces an additional_data_descriptor as an intermediary structure that specifically handles application program control information, separating it from the standard data-encoding-scheme descriptor. This intermediary descriptor acts as a dedicated interface for new control information types, allowing the reception apparatus to handle hybrid broadcasting functionality without complicating the existing data broadcasting processing path.
2Adaptability or versatility
If additional data descriptors are introduced to carry control information for application programs, then the functionality for hybrid broadcasting is enhanced, but the difficulty of detecting and processing the data structure increases
Solution Approach 1:
The patent establishes a predetermined relationship between the additional_data_descriptor and the data elementary stream description region in the PMT. The descriptor is positioned and structured in advance with specific syntax and semantics, allowing the reception apparatus to detect and process control information following a predetermined sequence without requiring complex real-time analysis of the data structure.
Solution Approach 2:
The patent modifies the PMT structure by adding a new descriptor type (additional_data_descriptor) with specific parameters such as descriptor_tag, descriptor_length, data_type, and representative_module_id. These parameter changes are standardized and documented, allowing reception apparatus to detect and process the new descriptor using predefined rules rather than requiring complex adaptive parsing.
Data Source
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AI summary
Provided is a reception apparatus including a reception unit that receives broadcast content transmitted by a broadcast waves of digital broadcasting, a first obtaining unit that obtains transmission data other than data-broadcast content, the transmission data being transmitted in a data carousel transmission scheme by the broadcast wave, and a control unit that controls a predetermined operation based on the obtained transmission data.