Dynamic Video Call Image Ratio Negotiation for Foldable Displays
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Foldable electronic devices face challenges in performing video calls due to changes in display aspect ratios, as existing technologies often negotiate video codecs based on preset ratios that may not match the current display aspect ratio, leading to suboptimal video rendering, such as cropping or stretching, which affects user experience.
Innovation Solution
A foldable electronic device that includes a processor and memory to dynamically determine the display aspect ratio during a video call by obtaining information on the current display state, transmitting this information to an external device, and renegotiating the image ratio using protocols like SIP INVITE and RE-INVITE messages to ensure optimal video rendering based on the device's current display configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic device uses a preset image ratio for video call negotiation, then the video call can be established quickly, but the image ratio may not match the current display aspect ratio causing cropping or stretching
Solution Approach 1:
The patent implements dynamic image ratio adjustment by detecting the current display aspect ratio during video call establishment and renegotiating the image ratio accordingly. Instead of using a fixed preset image ratio, the system adapts the image ratio to match the actual display configuration, thereby resolving the contradiction between quick call establishment and accurate image rendering.
Solution Approach 2:
The patent changes the image ratio parameter based on the detected display aspect ratio. By modifying this critical parameter during the video call setup process, the system ensures that the negotiated image ratio matches the current display configuration, eliminating cropping and stretching issues while maintaining efficient call establishment.
2Area of stationary object
If the electronic device removes or reduces part of the received image to match the display, then the display can show the full screen, but the video quality and user experience deteriorate
Solution Approach 1:
The patent performs preliminary action by detecting the display aspect ratio and negotiating the appropriate image ratio before the video call actually starts. This preemptive configuration ensures that the video stream is transmitted with the correct dimensions, eliminating the need for post-processing operations like cropping or stretching that would degrade video quality.
Solution Approach 2:
The patent replaces the mechanical approach of physically removing or reducing image content with a negotiation-based system that establishes the correct image dimensions at the source. Instead of manipulating the received image through cropping or scaling operations, the system uses protocol-level negotiation to ensure the video stream matches the display requirements from the beginning.
3Adaptability or versatility
If the electronic device supports multiple display shape changes, then the device versatility increases, but the video call compatibility with external devices becomes more complex
Solution Approach 1:
The patent manages multiple display shape configurations by detecting the current display aspect ratio and dynamically adjusting the negotiated image ratio parameter. This approach allows the device to support various display shapes without increasing negotiation complexity, as the system automatically adapts the image ratio parameter to match the current display state.
Solution Approach 2:
The patent implements self-service by enabling the electronic device to automatically detect its current display configuration and negotiate the appropriate image ratio without requiring manual intervention or complex external coordination. The device autonomously adapts to its display state, simplifying the overall system complexity despite supporting multiple display shapes.
Data Source
AI summary
An electronic device includes at least one display, a communication circuit, at least one processor, and a memory. The processor is configured to obtain information on a first display aspect ratio associated with a current state of the at least one display if an input indicating initiation of a video call is received. The processor is configured to determine at least one first image ratio associated with the video call based on the information on the first display aspect ratio. The processor is configured to transmit, to an external electronic device, a first signal including information on the at least one first image ratio. The processor is configured to receive, from the external electronic device, a second signal including information on a second image ratio associated with the video call. The processor is configured to perform the video call based on the second image ratio.