Video Transmitting Device Complement Signal Bandwidth
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-definition video content transmission faces challenges due to limited transmission bandwidth, leading to potential image quality deterioration when reducing data amount, as methods like lowering frame rate or resolution can result in loss of continuity or detail.
Innovation Solution
A video transmitting/receiving device generates a complement signal based on the output device's information and adds it to the reduced video signal, allowing for dynamic adjustment to match the display capabilities, thereby maintaining image quality without exceeding bandwidth limits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the data amount of video content is reduced by lowering frame rate, then the transmission bandwidth requirement is reduced, but the continuity in motion is lost and image quality deteriorates
Solution Approach 1:
The video signal is divided into two separate signals: a reduced-resolution base video signal for transmission and a complement signal containing the difference information. This segmentation allows the main video content to be transmitted at lower bandwidth while the complement signal restores the missing high-frequency details at the receiving end.
Solution Approach 2:
A complement signal acts as an intermediary that carries the difference between the original high-definition video and the transmitted reduced-resolution video. This intermediary signal enables reconstruction of the original high-definition video at the receiving end without requiring transmission of the full high-definition data stream.
2Quantity of substance
If the data amount of video content is reduced by lowering resolution, then the transmission bandwidth requirement is reduced, but image quality deteriorates due to decrease in resolution
Solution Approach 1:
The video signal is divided into two separate signals: a reduced-resolution base video signal for transmission and a complement signal containing the difference information. This segmentation allows the main video content to be transmitted at lower bandwidth while the complement signal restores the missing high-frequency details at the receiving end.
Solution Approach 2:
The system changes the resolution parameter dynamically by transmitting video at a reduced resolution and then restoring it to the original high definition using the complement signal. This parameter transformation allows adaptive resolution adjustment based on transmission bandwidth availability while maintaining the ability to recover full resolution.
3Productivity
If a complement signal is generated at the broadcast station, then the signal can be transmitted, but the complement processing does not always match the viewing environment of users
Solution Approach 1:
The system makes the complement signal generation dynamic by allowing the video display device to generate the complement signal locally based on its own display characteristics and the transmitted video signal. This dynamic approach enables adaptation to different viewing environments and device capabilities rather than using a fixed pre-generated complement signal.
Solution Approach 2:
The video display device performs self-service by generating its own complement signal based on the transmitted video and its display characteristics. This eliminates the need for the broadcast station to generate device-specific complement signals, allowing each display device to adapt the complement processing to its own viewing environment.
Data Source
AI summary
A video transmitting/receiving device includes: a receiving unit which receives video content; a converting unit which performs predetermined conversion on a video signal included in the video content; an information adding unit which adds a complement signal to the video signal converted by the converting unit; an input/output unit which inputs information of an external device and outputs the video signal; and a control unit, and the control unit performs control to select and output one of the video signal before performing the conversion by the converting unit, the video signal which has been converted by the converting unit, and the video signal to which the complement signal has been added by the information adding unit, in accordance with device information of the external device serving as an output destination, which is obtained by the input/output unit.