Image Transmission Control for Video Calls
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Solution Overview
Problem
Current video call systems unnecessarily consume bandwidth and resources by transmitting images even when the recipient is not viewing them, leading to inefficient use of communication resources and increased power consumption.
Innovation Solution
Implementing an image transmission control unit in mobile phone terminals that inhibits image transmission when a facial image is not being picked up by the communication counterpart, using message signals to control the transmission based on face recognition status, thereby optimizing image transmission only when necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If image information is continuously transmitted during video call, then the communication counterpart can always see the current state, but bandwidth and power consumption increase unnecessarily when the image is not being viewed
Solution Approach 1:
The patent implements periodic transmission control by having the transmission control unit inhibit image transmission during periods when the display is not showing the facial image, and resume transmission when the facial image is displayed again. This periodic on-demand transmission reduces power consumption while maintaining reliability only when needed.
2Reliability
If image information is transmitted bidirectionally in real-time video call, then both parties can see each other's current state, but broad transmission bandwidth is necessary which consumes communication resources
Solution Approach 1:
The system uses periodic transmission control where image transmission is activated only during periods when the facial image is actually displayed on the screen. When the display shows other content or remains blank, transmission is inhibited. This reduces bandwidth consumption while maintaining real-time communication reliability during active viewing periods.
3Productivity
If face recognition is used to control image transmission, then transmission can be optimized based on viewing status, but the system complexity increases
Solution Approach 1:
The patent employs feedback mechanisms where the transmission control unit receives signals from the display unit about what is currently being shown. When the display unit displays the facial image picked up by the camera, the control unit activates transmission; when other content is displayed, transmission is inhibited. This feedback-based control improves communication efficiency without requiring complex face recognition algorithms.
Data Source
AI summary
An information processing device including an image transmission control function includes an image pickup unit that picks up an image including a facial image of a speaker; a transmission unit that transmits a picked-up image; a reception unit that receives an image including a facial image picked up by a communication counterpart device; a display unit that displays a received image; and a transmission control unit that inhibits transmission of the image picked up by the image pickup unit in a case where the facial image is not being picked up by the communication counterpart device.