Video Processor Swap Error Detection via Triple Edge Analysis
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Solution Overview
Problem
The dual-link system for image transmission lacks a method to swiftly detect swap errors between links, leading to potential misalignment of odd and even images, which can result in incorrect image reconstruction and display.
Innovation Solution
A video processor device comprising a first image combiner unit, a second image combiner unit, an edge detector unit, and a judgment unit that combines and analyzes images from both links to detect triple edges and determine correct image alignment, enabling high-speed detection of swap errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the dual-link system transmits odd and even images without swap detection capability, then the transmission system remains simple and compatible with existing standards, but swap errors cannot be detected timely causing incorrect image reconstruction
Solution Approach 1:
The patent segments the image transmission detection process into two independent combination paths: a first image combiner unit that combines odd images from the first link with even images from the second link, and a second image combiner unit that combines even images from the first link with odd images from the second link. This segmentation allows parallel processing of both possible combinations without requiring complex sequential checking mechanisms.
Solution Approach 2:
The patent performs preliminary action by generating both possible combination images before final image output. The first and second image combiner units create both possible reconstructions in advance, allowing the judgment unit to quickly compare and identify the correct combination without requiring complex real-time verification during transmission.
2Measurement precision
If swap detection is performed by combining and comparing images from both links, then swap errors can be detected, but the detection speed is insufficient for real-time requirements
Solution Approach 1:
The patent merges the detection function into the existing image combination process by having the first and second image combiner units operate simultaneously on incoming image data. The edge detector unit then processes both combination images in parallel, merging detection operations with the normal image reconstruction workflow rather than adding separate sequential detection steps.
Solution Approach 2:
The patent ensures continuity of useful action by maintaining continuous generation of both combination images through the first and second image combiner units. The edge detector continuously monitors both images for triple edges, ensuring that swap detection occurs continuously without interruption to the image transmission and reconstruction process.
3Difficulty of detecting and measuring
If the system generates multiple combination images for swap detection, then detection capability is provided, but processing resources and time are consumed
Solution Approach 1:
The patent applies partial action by generating only the necessary combination images for detection purposes. The first and second image combiner units create both possible combinations, but the system only processes these through the edge detector when swap detection is required, rather than continuously processing all possible variations or performing exhaustive checks.
Solution Approach 2:
The patent implements feedback through the judgment unit that compares the first and second combination images to identify triple edges. This feedback mechanism allows the system to quickly determine whether a swap occurred by analyzing the edge patterns in both combination images and providing immediate feedback on the correctness of the image reconstruction.
Data Source
AI summary
A video processor and method for swiftly detecting swaps occurring between links during transmission of images by the dual-link system. A first image combiner unit combines an image D1 of a first link as an odd-numbered image, with an image of a second link, to generate a first combination image. A second image combiner unit combines an image of a second link as an odd-numbered image, with the image of the first link to generate a second combination image. An edge detector unit detects the horizontal edge of the first combination image and the second combination image. A judgment unit compares the number of triple edges in the first combination image and second combination image, and judges the combination image having more triple edges as the error image. The triple edges contain three consecutive edges along the horizontal direction, and the rising edges and falling edges are arrayed alternately.