Video Rotation System Using Orientation Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current video recording devices lack an effective method to indicate and rotate video files according to the orientation of the camera, as there is no universally accepted flag convention for landscape or portrait mode, and rotating video files is more processor-intensive than rotating still images.
Innovation Solution
The video capture device uses an orientation sensor to rotate image data before storing it as a digital video file, employing a transformation circuit and buffer to adjust the frame data based on the device's orientation, allowing for rotations of 90, 180, or 270 degrees, or no rotation at all, ensuring the video file is recorded in the correct orientation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If video files are rotated after recording using software, then orientation can be corrected, but processor burden increases and efficiency decreases
Solution Approach 1:
The patent applies preliminary action by rotating the video data immediately after capture using a transformation circuit, before the video is stored or processed further. This eliminates the need for post-recording rotation operations, reducing processor burden and improving efficiency while maintaining accurate orientation indication throughout the video processing pipeline
2Loss of information
If an orientation flag system is implemented, then video orientation can be indicated, but device complexity increases due to lack of universal convention
Solution Approach 1:
The patent extracts the orientation indication function from complex software flag systems and implements it directly in hardware through a transformation circuit that physically rotates video data based on sensor input. This eliminates the need for software-based orientation flags and universal convention development, reducing system complexity while preserving orientation information
Solution Approach 2:
The transformation circuit serves as an intermediary between the orientation sensor and the video processing pipeline, automatically translating sensor data into appropriate video rotations. This intermediary approach simplifies the overall system by providing a direct hardware-based solution rather than requiring complex software interpretation of orientation flags
3Reliability
If video data is rotated in real-time during recording, then orientation is maintained correctly, but processor burden increases
Solution Approach 1:
The patent replaces software-based video rotation with a dedicated transformation circuit implemented in hardware. This hardware implementation performs rotations more efficiently with lower energy consumption than general-purpose processors, maintaining orientation consistency throughout recording while reducing processor energy consumption and burden
Data Source
AI summary
A video recording device is described having an orientation sensor. The recording device rotates video data received from an image sensor according to signals received from the orientation sensor. The rotation occurs before the video data is compressed according to a video codec and stored on a tangible storage device. By rotating the video data before compression, the need for intensive, post-capture video rotation on the compressed video file is eliminated.