Video Call Camera Alignment via Temporal Display Switching
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Solution Overview
Problem
Current video calling devices often position cameras in a way that obstructs the user's face, leading to distorted expressions and impaired interpretation of facial cues during video calls, affecting user experience.
Innovation Solution
An apparatus and method that alternates between display and collection time periods, aligning the camera with the user's face during collection periods and keeping the display device in a non-display state, ensuring accurate capture and transmission of facial expressions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the camera is disposed at an edge of the communication device to prevent blocking the display screen, then the display area is improved, but the facial expression collection accuracy deteriorates
Solution Approach 1:
The patent implements dynamic switching between display mode and collection mode. The camera and display screen alternately occupy different spatial positions through temporal separation, allowing the camera to be positioned at the edge during display mode and move to a central position during collection mode, thus resolving the contradiction between display area and facial expression collection accuracy
Solution Approach 2:
The system employs periodic switching between two operational states: in the first time period, the display screen is activated and the camera is positioned at the edge; in the second time period, the display screen is deactivated and the camera moves to a central position for accurate facial expression collection. This periodic action allows both display area and collection accuracy to be optimized at different times
2Measurement precision
If the camera is positioned to face the user during display time period, then the facial expression collection is improved, but the user cannot view the display screen properly
Solution Approach 1:
The patent divides operation into periodic cycles: during the first time period, the display screen is active and the camera is positioned at the edge, allowing comfortable viewing; during the second time period, the display screen is inactive and the camera moves to face the user directly, enabling accurate facial expression collection. This periodic switching resolves the contradiction between collection accuracy and viewing comfort
Solution Approach 2:
The system dynamically adjusts the operational state by switching between display mode and collection mode. The camera and display screen alternate their functional roles through temporal separation, allowing the camera to face the user during collection mode without compromising display viewing comfort, as the display is inactive during this period
Data Source
AI summary
An apparatus and method for controlling a video call, and a video calling system are disclosed. The apparatus for controlling a video call includes: a transceiver configured to receive, in a display time period, video information of a remote party and transmit video information of a local party; a processor communicatively connected to the transceiver; and a memory having stored thereon instructions which, when executed by the processor, cause the processor to: control, at least in a collection time period, the video collector to collect the video information of the local party, and control, in the collection time period, the video collector to be aligned with a face of the local party; and control, in the collection time period, the display apparatus to be in a non-display state, and control, in the display time period, the display apparatus to display a video of the remote party according to the video information of the remote party. The video calling system includes the apparatus for controlling a video call described above.