Image Processing Device Parallel VBR Decompression
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Solution Overview
Problem
High-definition and high-frame rate image processing systems face bandwidth limitations, leading to decreased device speeds during recording or playback, which negatively impacts user experience, especially in critical applications.
Innovation Solution
An image processing device with a multimedia processor and a frame buffer compressor that uses a decoder with predecoders and a merger to divide and decompress variable bit rate (VBR) or Golomb-Rice mode compression data streams in parallel, optimizing decompression operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If data compression is applied to reduce bandwidth, then transmission bandwidth and storage requirements are reduced, but processing complexity increases due to compression and decompression operations
Solution Approach 1:
The patent divides the compression data stream into multiple divided compression data streams with equal bit lengths. Multiple predecoders process these divided streams in parallel, breaking down the complex sequential decompression task into simpler concurrent sub-tasks, thereby reducing overall processing complexity while maintaining compression benefits
Solution Approach 2:
The patent performs preliminary division of the compression data stream into equal-bit segments before decompression. This pre-processing step enables subsequent parallel decoding operations, where multiple predecoders can simultaneously process different segments, reducing the critical path duration and overall processing complexity
2Speed
If processing capacity is increased to handle high-definition high-frame rate video, then device speeds improve, but bandwidth requirements increase
Solution Approach 1:
By segmenting the decompression workload into multiple parallel predecoder units processing equal-bit data streams, the system achieves higher processing speeds for high-definition video while the compression itself reduces the bandwidth required to transmit the original uncompressed data
Solution Approach 2:
The patent transforms the variable bit rate compression data stream into fixed equal-bit divided streams, enabling efficient parallel processing. This parameter transformation allows the system to maintain high processing speeds for high-definition video while managing bandwidth through compression
Data Source
AI summary
The present disclosure provides an image processing device. The image processing device includes a multimedia processor that processes raw data of an image frame to generate image data and a frame buffer compressor that decompresses a first compression data stream compressed on a first image data of the first pixel by a variable bit rate (VBR) mode to generate a first output data. The decoder includes a first predecoder that generates a first data stream and a second predecoder that generates a second data stream different from the first data stream. The decoder outputs the first data based on the first data stream and outputs a second data based on the second compression data stream. A merger receives the first and second data. A decompression operation is performed on the first compression data stream based on the first and second data.