Black Bar Detection in Video Playback Using Periodic Frame Analysis
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Solution Overview
Problem
Video content often includes black bars due to aspect ratio differences between the content and electronic devices, which are displayed during playback, disrupting the user experience.
Innovation Solution
An electronic device with a processor and memory that detects black bars in video content by analyzing image frames during a designated detection period and adjusts the image area based on the device's resolution, removing the black bars from the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If black bar detection is performed continuously during video playback, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The patent implements periodic action by performing black bar detection only during specific detection periods rather than continuously. The processor identifies time information related to detection periods and activates detection only during these intervals, reducing overall power consumption while maintaining detection accuracy when needed.
Solution Approach 2:
The patent applies preliminary action by acquiring time information about detection periods before actual video playback begins. This allows the system to prepare detection parameters and activate detection only when necessary, avoiding continuous operation and reducing energy consumption while ensuring detection accuracy is maintained during relevant periods.
2Reliability
If black bar detection is performed throughout the entire video content, then detection reliability is improved, but processing time increases
Solution Approach 1:
The system performs detection periodically during designated detection periods rather than throughout the entire video content. This maintains detection reliability for relevant portions while significantly reducing the total processing time required.
Solution Approach 2:
The patent extracts and processes only the specific time periods where black bar detection is necessary, separating these detection periods from the rest of the video content. This allows the system to maintain high detection reliability for relevant content while minimizing unnecessary processing time.
Data Source
AI summary
Various embodiments of the present invention relate to a device and a method for detecting a black bar in video content in an electronic device. An electronic device comprises a display device, a processor, and a memory automatically connected with the processor, wherein the memory, when executed, can store instructions for allowing the processor to: play video content on the basis of a request relating to the playing of the video content; acquire, on the basis of the request relating to the playing of the video content, time information relating to the detection period of a black bar included in the video content; detect, on the basis of the time information, the black bar by using at least one image frame of the video content included in the detection period, when the detection period arrives while the video content is played; and adjust, on the basis of the black bar included in the video content and the resolution of the display device, the size of an image area of the video content being played. Other embodiments are also possible.