ATSC ALP Logo And Icon Transport for Flexible Broadcast Displays
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Solution Overview
Problem
The ATSC 3.0 standard does not provide means to transmit logos and icons in broadcast transmissions, which are important for user experience and program promotion, while DRM is not flexible enough for TV programs.
Innovation Solution
An apparatus and method for encoding and decoding ATSC Link-layer Protocol packets to include image data of logos and icons, enabling their transmission and decoding in ATSC broadcasts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If DRM specification is used for transmitting logos in radio broadcasts, then radio receivers with small displays can receive logos, but the system is not flexible enough for TV programs and ATSC
Solution Approach 1:
The patent segments the logo transmission system by creating separate ALP packet structures for TV and radio applications. The ALP packet format is divided into header and payload sections, with the payload containing encoded logo image data. This segmentation allows independent optimization for different display types without being constrained by a unified DRM specification.
Solution Approach 2:
The patent introduces ALP (ATSC Link-layer Protocol) packets as an intermediary mechanism between the logo data source and the display device. These packets serve as a flexible carrier that can adapt to both TV and radio applications, mediating between the need for standardized transmission and the requirement for application-specific flexibility.
2Ease of operation
If ATSC 3.0 does not provide means to transmit logos, then the broadcast system maintains simplicity, but user experience and program promotion are compromised
Solution Approach 1:
The patent merges logo transmission capabilities into the existing ALP packet structure already defined in ATSC 3.0. By combining logo data with the established link-layer protocol framework, the system enhances functionality without requiring a completely new transmission mechanism, thus improving user experience while maintaining relative system simplicity.
Solution Approach 2:
The ALP packet structure is designed to serve multiple functions: it can carry logo image data for TV programs, icon data for application interfaces, and program identification data. This multi-functionality allows a single protocol mechanism to address various user experience requirements across different broadcast applications.
3Adaptability or versatility
If logos are transmitted independently from TV programs, then logo transmission is optimized for various displays, but the system requires additional transmission infrastructure
Solution Approach 1:
The patent implements dynamic logo transmission by encoding multiple logo images at different resolutions within the ALP packet payload. The receiving device can dynamically select the appropriate resolution based on its display capabilities, allowing optimization for various screen sizes without requiring separate transmission streams for each resolution.
Solution Approach 2:
The patent changes the parameter of image resolution by encoding logo data at multiple resolution levels within the same transmission framework. The ALP packet payload contains encoded image data that can represent logos at different scales, allowing the receiving device to adjust the display parameter according to its capabilities without requiring infrastructure changes.
Data Source
AI summary
FIG. 1 illustrates an apparatus for decoding according to an embodiment. The apparatus includes an interface for receiving a plurality of ATSC Link-layer Protocol packets each of which including a packet header and a packet payload, wherein the packet payload of an ATSC Link-layer Protocol packet of the plurality of ATSC Link-layer Protocol packets includes image data of one or more logos and/or of one or more icons. Moreover, the apparatus includes a decoding unit for decoding the packet payload of said ATSC Link-layer Protocol packet to obtain the image data.