Display Control Apparatus for Flickering Prevention in Vehicle Broadcast
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Solution Overview
Problem
In broadcast reception and display systems, character data from radio or television broadcasting often causes screen flickering due to intermittent updates, which deteriorate visibility, as the time to obtain character data cannot be accurately estimated from vehicle speed and distance, leading to ineffective display control.
Innovation Solution
A display control apparatus that acquires and controls the display of character data based on reception frequency, quality, and broadcast station determination, delaying or halting the display of first data until second data is acquired, and prioritizing stable reception quality to prevent flickering and improve visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If character data is updated immediately one after another at the same screen position, then data freshness is improved, but screen flickering occurs and visibility deteriorates
Solution Approach 1:
The system estimates the acquisition time of character data in advance based on reception quality before actually acquiring the data. This preliminary time estimation allows the display control to prevent flickering by knowing when data will be ready, avoiding the need to immediately display incomplete or rapidly updating data that would cause screen flickering.
Solution Approach 2:
The display control dynamically adjusts the display timing and content based on real-time reception quality conditions. When reception quality is good, the system can afford to wait for complete data acquisition; when reception quality is poor, the system adapts its display strategy to account for potential delays, creating a dynamic response that prevents flickering while maintaining data freshness.
2Object-affected harmful factors
If display control halts character data display to prevent flickering, then visibility is improved, but data acquisition time increases
Solution Approach 1:
By estimating data acquisition time in advance based on reception quality, the system can make informed decisions about when to halt display and when to proceed with data acquisition. This preliminary estimation minimizes unnecessary waiting time while ensuring that display halts only occur when they will effectively prevent flickering, thus balancing visibility improvement with data acquisition efficiency.
3Device complexity
If conventional display control is used without reception quality consideration, then device complexity is reduced, but flickering prevention capability is insufficient
Solution Approach 1:
The system continuously monitors reception quality conditions and uses this feedback to adjust display control decisions. By incorporating reception quality feedback into the display control logic, the system achieves effective flickering prevention without requiring complex additional hardware, as the control mechanism adapts based on the feedback from the existing reception quality measurements.
Data Source
AI summary
A display control apparatus includes a reception frequency acquisition unit configured to acquire a reception frequency, a reception quality acquisition unit configured to acquire reception quality, a first data acquisition unit configured to acquire first data at a reception frequency, a second data acquisition unit configured to acquire second data from a signal of a reception frequency, a display control unit configured to control display of first data until acquisition of second data after acquisition of first data, and a display unit configured to display first data and/or second data in accordance with control of a display control unit.