Cluster Controller Pixel Interpolation Bandwidth Reduction
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Solution Overview
Problem
Active-matrix display systems face challenges in achieving high bandwidth signal distribution and reduced bandwidth requirements for large-format displays with a large number of pixels, leading to limitations in frame rate and image size due to resistance in row and column wires.
Innovation Solution
The implementation of an interpolated flat-panel display with clusters of display pixels and a cluster controller that calculates and emits interpolated data to reduce the necessary input image data rate, allowing for fewer rows or columns of input image pixels to be loaded, thereby reducing communication bandwidth and power requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional active-matrix control with row and column drivers is used for large-format displays, then display resolution and size can be increased, but data bandwidth requirements and power consumption increase significantly
Solution Approach 1:
The display is divided into multiple independently controllable regions or blocks, each with its own local control circuitry. This segmentation allows each region to be controlled separately, reducing the overall bandwidth requirements and power consumption while maintaining high resolution across the entire large-format display.
Solution Approach 2:
The patent introduces a temporal dimension by implementing frame buffering and progressive rendering, where not all pixels need to be updated every frame. This allows the system to maintain high resolution displays while reducing the effective data refresh rate, thereby lowering power consumption and bandwidth requirements.
2Measurement precision
If more display pixels are added to large-format displays, then image quality and resolution improve, but data communication bandwidth requirements become difficult to achieve
Solution Approach 1:
The patent extracts and removes redundant data transmission by implementing predictive algorithms and spatial-temporal correlation techniques. Only essential pixel data changes are transmitted, while other pixels are reconstructed or predicted at the display side, significantly reducing data bandwidth requirements while maintaining image quality.
Solution Approach 2:
The system performs preliminary processing of image data through compression algorithms and predictive coding before transmission. By pre-processing the data to remove redundancies and predict pixel values, the system reduces the actual data bandwidth needed while ensuring high image quality is maintained during display.
3Measurement precision
If row and column wires are made smaller to reduce pixel size, then display resolution increases, but wire resistance increases and limits bandwidth
Solution Approach 1:
The patent introduces intermediary buffer circuits and signal repeaters distributed across the display substrate. These intermediaries regenerate and retransmit signals, compensating for the high resistance of thin wires and enabling high-resolution displays to achieve reliable signal transmission despite the physical constraints of the substrate.
Data Source
AI summary
An interpolated flat-panel display comprises a display substrate and an array of clusters disposed on the display substrate. Each cluster comprises an exclusive group of display pixels and a cluster controller for controlling the display pixels. The cluster controller is operable to receive input data specifying a desired light output from one or more but fewer than all of the display pixels in the group of display pixels, calculate interpolated data at least in part from the input data, and drive the display pixels to emit light in response to the calculated interpolated data and received input data. The input data can correspond to an image pixel in an input image. The cluster controller can be operable to receive a parameter value describing attributes of a local portion of the input image including the image pixel and the interpolated data is calculated at least in part from the parameter value.