Broadcast Receiving Apparatus Announcement Mode Switching Timing
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Solution Overview
Problem
Conventional broadcast receiving apparatuses switch to announcement mode prematurely when detecting the traffic announcement flag for digital broadcasts, leading to sudden volume increases or display notifications before traffic information starts, causing an uncomfortable user experience due to the delay between digital and analog broadcasts.
Innovation Solution
The apparatus selectively switches to announcement mode based on the detection of the announcement flag for the analog broadcast, waiting for the flag detection from the digital broadcast to ensure switching occurs closer to the actual start of traffic information, thereby minimizing the period of normal broadcast output in announcement mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the announcement mode is activated immediately upon detecting the announcement flag from the delayed digital broadcast, then the traffic information can be notified to users, but the volume increases or display notifications occur before the actual traffic information starts, causing user discomfort
Solution Approach 1:
The system performs preliminary detection of the announcement flag from the digital broadcast while maintaining normal output, and only activates announcement mode when the flag is subsequently detected from the analog broadcast, ensuring timely yet accurate notification activation
2Measurement precision
If the announcement mode is activated based on the announcement flag from the analog broadcast, then the traffic information notification is synchronized with the actual start, but the period during which normal broadcast is output in announcement mode is extended
Solution Approach 1:
The system uses the detection timing of the announcement flag from the digital broadcast as feedback to determine when to activate announcement mode, creating a coordinated control mechanism that balances synchronization accuracy with time efficiency
Data Source
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AI summary
Broadcast receiving apparatus and method to enable reduction of the uncomfortable feeling provided to the user at a time of switching to the announcement mode. A broadcast receiving apparatus includes: a flag detection unit (107) that detects an announcement flag indicating broadcast start of traffic information from each of FM broadcast and DAB broadcast; and a switching processing unit (108) that switches an output mode of the DAB broadcast to an announcement mode for outputting the traffic information by using timing with which the announcement flag is further detected from FM broadcast as a trigger, when the announcement flag is detected from the DAB broadcast while an output control unit (106) outputs the DAB broadcast. This allows to switch the output mode of the broadcast by the second standard to the announcement mode with timing as close as possible to timing with which broadcast of the traffic information actually starts.