Channel Hopping Scheme for Multi-Service Data Updates
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Digital broadcast systems face challenges in updating data across multiple channels efficiently, particularly in a digital broadcast environment where users need to receive updates from different broadcasters, requiring automatic channel switching to access information from various services.
Innovation Solution
A method and apparatus for a digital broadcast receiving device that can receive and update data from multiple channels by tuning to a predetermined channel at scheduled times, extracting relevant data, and storing or utilizing it, with optional use of a geographic positioning system to filter location-specific updates and a scheduler to manage update priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a digital broadcast receiving device receives data from multiple channels simultaneously, then data completeness is improved, but device complexity and power consumption increase
Solution Approach 1:
The patent segments the data reception process by dividing channels into groups and receiving data from multiple channels in sequential batches rather than simultaneously. The receiving device tunes to a first group of channels, extracts data, then tunes to a second group, extracting data only when the first group's data is no longer needed. This segmentation reduces the number of channels actively received at any one time, lowering device complexity while maintaining data completeness through systematic progression through all channels.
2Loss of time
If a digital broadcast receiving device continuously monitors all channels for updates, then update timeliness is improved, but energy consumption increases
Solution Approach 1:
The patent implements periodic action by receiving data from channels in scheduled batches rather than continuously. The receiving device receives data from a first group of channels, then switches to receiving data from a second group after a predetermined time interval. This periodic switching maintains update timeliness by systematically cycling through all channels while significantly reducing power consumption compared to continuous monitoring of all channels simultaneously.
3Adaptability or versatility
If the receiving device switches channels frequently to access different services, then service accessibility is improved, but signal stability deteriorates
Solution Approach 1:
The patent segments channel switching into organized batches, where the receiving device transitions from a first group of channels to a second group of channels only after completing data extraction from the first group. This segmented approach maintains signal stability by minimizing the frequency and duration of channel switches, while still providing access to multiple services across different channels through systematic progression through all available channels.
Data Source
AI summary
Data transmitted over different channels may be updated by receiving one or more input data streams containing data for one or more digital data services, wherein the data is in the form of a plurality of packets, wherein each packet includes information identifying a channel and a number of related downstream packets; determining from the plurality of packets a time that an update packet containing data for one of the digital data services will be transmitted as part of the signal; and generating a schedule packet containing the time that the update packet will be transmitted as part of a signal.