Broadcast Channel Map Segmentation for Video-Only Navigation
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Solution Overview
Problem
Conventional broadcast signal receiving devices face difficulties in selecting desired video channels when audio channels are mixed with video channels, making it hard for users to navigate and choose the desired video content.
Innovation Solution
A broadcast signal receiving device with a receiving unit, a registering unit, and a channel selection unit that registers indicators for audio channels in a channel map, allowing users to easily select video channels by skipping audio channels using the channel up or down keys.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If audio channels are registered in the channel map mixed with video channels, then the channel map contains complete channel information, but it becomes difficult to select a desired video channel using channel up or down keys
Solution Approach 1:
The patent divides the channel selection process into two distinct modes: video channel selection mode and audio channel selection mode. The channel map is segmented by type (video vs. audio channels), and the system automatically switches between segmentation modes based on the current selection state. This allows complete channel information to be stored while providing simplified navigation within each category.
Solution Approach 2:
The patent implements dynamic channel selection behavior where the system automatically adjusts its selection logic based on the current channel type. When a video channel is selected, the system enters video channel selection mode and only selects subsequent video channels. When an audio channel is selected, it switches to audio channel selection mode. This dynamic adaptation resolves the contradiction by making the selection process context-aware.
2Ease of operation
If conventional channel selection methods are used where only channels of the selected category are successively selected, then channel selection within a category is simplified, but audio channels mixed with video channels still cause navigation difficulties
Solution Approach 1:
The patent implements feedback mechanisms where the system monitors the current channel selection state and automatically adjusts the selection behavior. When the system detects that an audio channel is currently selected, it switches to audio channel selection mode for subsequent up/down key operations. Conversely, when a video channel is selected, it switches to video channel selection mode. This feedback loop simplifies user operation without requiring complex manual mode switching.
Solution Approach 2:
The system performs automatic channel type detection and mode switching without user intervention. The channel selection unit automatically determines whether the current channel is video or audio type and adjusts the selection algorithm accordingly, eliminating the need for users to manually configure or understand the complex channel map structure.
Data Source
AI summary
A broadcast signal receiving device includes a receiving unit, a registering unit and a channel selection unit. The receiving unit receives digital broadcast signals including a plurality of sub-channels on each of a plurality of physical channels. The registering unit registers an indicator indicating whether or not each of the sub-channels is an audio channel in an indicator registration region of a channel map, which stores channel map information relating to a correspondence between the physical channels and the sub-channels. The channel selection unit selects the sub-channels based on the channel map information and the indicator stored in the indicator registration region.