Digital Broadcast Receiver Channel Scanner SI Type Segmentation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current digital broadcast receivers fail to distinguish between Program Specific Information (PSI) and Program and Service Information Protocol (PSIP), leading to unintended organization of services like VOD channels, resulting in incorrect channel listings.
Innovation Solution
A digital broadcast receiver that scans broadcast signals for service information (SI) and selects signals based on PSI or PSIP type, allowing users to choose channel modes (cable or VOD) to update channel information, preventing reception of unintended services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the receiver scans and organizes all broadcast channels uniformly without distinguishing PSI and PSIP, then the channel scanning process is simple and fast, but unintended broadcast services (such as VOD channels) are incorrectly organized as regular channels
Solution Approach 1:
The patent extracts and identifies the SI type (PSI or PSIP) from the broadcast signal during the channel scanning process. By detecting the presence of specific SI types, the system separates VOD services from regular broadcast channels, preventing unintended services from being organized as regular channels while maintaining efficient scanning.
2Reliability
If the receiver distinguishes between PSI and PSIP types to accurately organize channels, then channel organization accuracy is improved, but the device complexity increases due to additional detection and classification logic
Solution Approach 1:
The broadcast signal itself contains the information needed for identification (SI type indicators). The controller detects the SI type by examining the broadcast signal's metadata, allowing the system to self-identify and classify channels without requiring complex external databases or manual configuration. This keeps the added complexity minimal while achieving accurate channel organization.
3Quantity of substance
If the receiver updates channel information for all scanned signals, then complete channel information is available, but unintended services are included in the channel list
Solution Approach 1:
The patent segments the channel information update process based on SI type. The controller updates channel information separately for PSIP-type signals (regular broadcast channels) and PSI-type signals (VOD services). This segmentation ensures that only appropriate services are included in the regular channel list, maintaining information completeness for intended services while excluding unintended ones.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A digital broadcast receiver is provided, including a receiver which receives a plurality of broadcast signals, a channel scanner which scans the plurality of broadcast signals and acquires service information (SI) related to the plurality of broadcast signals, and a controller which selects a broadcast signal having a preset type of SI from among the acquired SI, and updates channel information.