Image Packet Header Encoding for Frame and Line Synchronization
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Solution Overview
Problem
Current in-vehicle devices face inefficiencies in data encapsulation due to large header sizes in data packets, which affect transmission overheads and encapsulation efficiency, particularly in advanced driver assistance systems (ADAS) that rely on cameras for real-time environmental sensing.
Innovation Solution
The proposed method and apparatus utilize a first data packet that includes part of an image frame content and first information indicating the logical frame and line number, reducing the need for excessive bits by using joint coding schemes and logical frame/line number indication, thereby improving encapsulation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional data packet encapsulation is used with detailed frame and line number indication, then transmission accuracy is maintained, but header size becomes excessively large reducing encapsulation efficiency
Solution Approach 1:
The patent segments the frame number indication into multiple parts: a first indication field for the first part of the frame number and a second indication field for the second part of the frame number. This segmentation allows efficient encoding of large frame numbers while maintaining indication accuracy and reducing overall header complexity.
Solution Approach 2:
The patent introduces a line number indication field that works in conjunction with the segmented frame number indication. By adding this dimensional component, the system achieves precise position indication through coordinate-like pairing of frame and line numbers, improving accuracy without requiring excessive bits in a single field.
2Reliability
If conventional data packet encapsulation is used with complete frame information, then frame synchronization reliability is maintained, but transmission overhead increases
Solution Approach 1:
The patent segments frame number indication into multiple fields (first indication field and second indication field), which reduces the bit width required in each individual field while maintaining overall precision. This segmentation achieves frame synchronization with reduced transmission overhead compared to using a single large-field counter.
Solution Approach 2:
The patent changes the parameter representation from a single large-frame counter to a segmented multi-field representation. This parameter transformation reduces the total number of bits required for frame synchronization information, thereby reducing transmission overhead while maintaining synchronization reliability.
3Measurement precision
If detailed frame and line number fields are included in data packets, then data packet ordering accuracy is improved, but encapsulation efficiency decreases
Solution Approach 1:
The patent divides the frame number indication into segmented fields (first indication field and second indication field), which improves data packet ordering accuracy through precise frame and line position identification while reducing the total header size, thereby improving encapsulation efficiency.
Solution Approach 2:
The patent transforms the frame number parameter from a single large-value field to segmented smaller fields, achieving both improved ordering accuracy through precise indication and improved encapsulation efficiency through reduced header overhead.
Data Source
AI summary
This disclosure discloses image transmission methods and apparatuses. In an implementation, a method performed by an apparatus includes generating a first data packet, wherein the first data packet comprises a portion of content of a frame of an image and first information indicating frame synchronization and line synchronization and sending the first data packet to a second communications apparatus.