Broadcast Receiver Station List Deduplication via PI Code and Frequency
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Solution Overview
Problem
Broadcast receivers face difficulties in displaying redundant information for the same broadcasting station due to temporary changes in PI codes, leading to user confusion when selecting a station.
Innovation Solution
A broadcast receiver and list generating method that prioritizes user preferences and distinguishes between different broadcasting stations based on PI code country codes, registering only one instance of each station with the same frequency to reduce redundancy in the station list.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If broadcast receivers identify broadcasting stations using PI code, then station identification is achieved, but redundant display of the same station occurs when PI code changes temporarily
Solution Approach 1:
The patent merges multiple identification criteria (PI code, broadcast frequency, country code) into a unified station identification system. When generating the station list, the system combines these parameters to determine whether received broadcast data corresponds to an existing station entry, thereby preventing redundant displays while maintaining accurate station identification even when PI codes change temporarily.
2Adaptability or versatility
If all received broadcast information is registered in the station list, then complete station coverage is achieved, but user selection becomes difficult due to redundant entries
Solution Approach 1:
The patent applies local quality by making the station list entries differentiated and non-uniform. Instead of simply listing all received broadcast information, the system selectively registers entries based on their uniqueness determined by the combination of PI code, broadcast frequency, and country code. This creates a station list where each entry has distinct local characteristics, preventing redundancy while maintaining completeness.
3Adaptability or versatility
If broadcast receivers handle PI code changes as different stations, then temporary service changes are captured, but station list redundancy increases
Solution Approach 1:
The patent implements a dynamic station identification approach that adapts to PI code changes. The system continuously monitors broadcast data and dynamically determines whether a received PI code represents a new station or a temporary change at an existing station by comparing against the combination of broadcast frequency and country code. This dynamic evaluation prevents unnecessary station list updates while capturing genuine service changes.
Data Source
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AI summary
A broadcast receiver is provided with a receiving means configured to receive a broadcast signal, an extracting means configured to extract a code from the received broadcast signal, a storage means configured to accumulatively store the code extracted by the extracting means and a broadcast frequency of the broadcast signal as a piece of broadcast information, a list generating means configured to generate a station list based on the broadcast information stored in the storage means, and a displaying means configured to display the station list. the list generating means has a determining means configured to determine that the plurality of pieces of broadcast information correspond to the same broadcasting station if their broadcast frequencies are the same, and a registering means configured to register only one of the plurality of pieces of broadcast information, which are determined to correspond to the same broadcasting station, to the station list.