Motion-Responsive Video Viewport for Mobile Conference Navigation

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Solution Overview

Problem

Mobile devices face limitations in displaying dynamic content due to size constraints, making it inconvenient to view and navigate through video conferences and other dynamic scenes, as traditional zooming and scrolling methods can be tedious and inefficient.

Innovation Solution

A motion responsive video capture system that uses spatially-sensitive sensors and processors to detect user device movement, allowing the viewport to be updated and moved intuitively within video frames, enabling natural body movements to select and view regions of interest within dynamic scenes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional zooming and scrolling methods are used on mobile devices, then users can view different sections of video content, but the operation becomes tedious and inefficient

Engineering Contradiction:
Improveease of navigationVSAvoidtime for navigation
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The system uses the mobile device's own motion sensors (accelerometer, gyroscope) to automatically track user movement and update the viewport without requiring manual interaction. The device serves itself by converting physical motion into automated viewing navigation, eliminating the need for tedious manual zooming and scrolling operations.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical operations (touchscreen scrolling, button pressing) with automated sensor-based detection. The motion sensors detect physical movement and the processor automatically translates this into viewport updates, substituting the mechanical interaction process with an automated sensing and processing system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Illumination intensity

If the display size on mobile devices is increased, then viewing quality improves, but the device size becomes too large to be portable

Engineering Contradiction:
Improveviewing qualityVSAvoiddevice size
Core Design Contradiction:
Illumination intensityVSArea of moving object

Solution Approach 1:

Instead of increasing the physical display area (two-dimensional solution), the system adds a third dimension by using motion sensing to dynamically adjust the viewport position and zoom level. This allows high-quality viewing of large video content on a small display by intelligently navigating through the content based on user motion, effectively compensating for the limited physical display area.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS8854415B2Motion responsive video capture during a video conference
Publication Date: 2014.10.07 CISCO TECHNOLOGY INC
  • US8854415B2 patent drawing
  • US8854415B2 patent drawing
  • US8854415B2 patent drawing

AI summary

A mobile communication device that is outfitted with motion detection mechanisms is used to construct a viewport on audio-visual data. As the communication device is moved along a spatial trajectory, the viewport is positioned accordingly. A virtual space can be constructed such that the spatial trajectory is mapped into the virtual space and the user can navigate the virtual space by suitable movement of the communication device. Accordingly, a user can use natural body movements to navigate the virtual space through the viewport.