Unified 2D Interpolation Architecture for Multi-Standard Motion Compensation
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Solution Overview
Problem
Current motion compensation technologies require significant chip area to process multiple video standards, which is inefficient and limits their implementation.
Innovation Solution
A unified 2D interpolation architecture that includes a first and second interpolation unit, a filter indicator, and an output unit for multiplexing and averaging, enabling motion compensation across various video standards like VC1, H.264, and MPEG-2 without increasing chip area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate motion compensation pipelines are used for each video standard, then motion compensation performance for multiple standards is achieved, but chip area is significantly increased
Solution Approach 1:
The patent implements a universal motion compensation pipeline that can process multiple video standards (MPEG-2, H.264, VC-1) through a single integrated architecture. The interpolation unit is designed to handle different interpolation requirements (e.g., 4-tap for MPEG-2, 6-tap for H.264/VC-1) by configuring filter coefficients dynamically, eliminating the need for separate dedicated pipelines for each standard while maintaining full functionality across all standards.
Solution Approach 2:
The patent employs dynamic configuration of the interpolation filter structure based on the video standard being processed. The filter indicator dynamically selects between different filter tap configurations (4-tap, 6-tap, 8-tap) and the system adapts its operation mode accordingly. This dynamic adaptability allows a single static hardware structure to perform multiple functions required by different video standards without requiring parallel dedicated pipelines.
2Area of stationary object
If a unified interpolation architecture is used, then chip area is reduced, but processing capability for different video standards must be maintained
Solution Approach 1:
The patent changes the operational parameters of the interpolation unit based on the video standard requirement. By dynamically adjusting filter coefficients, tap lengths, and interpolation factors according to the specific standard being processed, the unified architecture can achieve standard-specific performance without requiring separate hardware implementations. This parameter-based adaptation allows the same physical structure to deliver different processing capabilities as needed.
Data Source
AI summary
The present invention provides an apparatus for interpolation which is able to process input data with multiple video standards without sacrificing chip area. The interpolation unit comprises: a first interpolation unit for interpolating input data; a second interpolation unit for interpolating input data; a filter indicator for providing information to the first interpolation unit and the second interpolation unit; and an output unit for multiplexing and averaging output from the first interpolation unit and the second interpolation unit. The present invention also provides a motion compensation unit and a decoder for processing multiple video standards.