Foveated Display Gate Circuit Using Dual-Clock Row Activation
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Solution Overview
Problem
Existing display technologies require complex and potentially unreliable circuits to drive large numbers of display elements in foveated displays, necessitating numerous control signals and increasing the risk of errors.
Innovation Solution
A gate circuit utilizing flip flops driven by two clock signals, allowing dynamic adjustment of the frequency of one clock signal to control the number of simultaneously activated display element subsets, simplifying the control signal path and enhancing reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If complex circuits with numerous control signals are used to drive large numbers of display elements in foveated displays, then the ability to drive more display elements is improved, but the reliability of the circuit deteriorates
Solution Approach 1:
The display elements are divided into multiple subsets (e.g., rows or groups of pixels) that can be controlled independently. Each subset is driven by a dedicated control signal generated by the gate circuit, allowing the large number of display elements to be managed through segmented control rather than individual control of each element.
Solution Approach 2:
The gate circuit dynamically adjusts the frequency of one clock signal relative to another to control the number of simultaneously activated display element subsets. This dynamic frequency adjustment allows the circuit to adapt the driving pattern to match the foveated display requirements, activating more subsets when high resolution is needed and fewer subsets when power consumption is prioritized.
2Quantity of substance
If complex circuits with numerous control signals are used to drive large numbers of display elements, then the driving capability is improved, but the circuit complexity increases
Solution Approach 1:
The gate circuit uses two clock signals that can operate at different frequencies to control multiple display element subsets. This multi-functional approach allows the same circuit structure to drive varying numbers of subsets by simply adjusting the clock frequency ratio, eliminating the need for separate control circuits for each possible subset configuration.
Solution Approach 2:
The circuit complexity is reduced by changing the operational parameter (clock signal frequency) rather than reconfiguring the circuit structure. By varying the frequency of one clock signal relative to the other, the gate circuit can control different numbers of display element subsets without requiring additional control signals or complex switching mechanisms.
3Measurement precision
If multiple control signals are used to drive display elements, then the control precision is improved, but the number of required signals increases
Solution Approach 1:
The invention extracts the essential control function from multiple independent control signals and consolidates it into two clock signals with adjustable frequency ratios. By taking out the core timing control function and implementing it through frequency modulation of two clock signals, the circuit achieves precise control of display element subsets without requiring a separate control signal for each subset.
Data Source
AI summary
A gate circuit is described comprising flip flops that are each driven by one of two clock signals, and which are arranged such that adjusting the frequency of one of these clock signals changes the number of subsets of display elements that are simultaneously driven. In a foveated display, an image may be produced with different effective resolutions in different parts of the same image by treating groups of display elements as a single pixel. For example, a more detailed portion of the image may be produced with each display element having an independent color, whereas a less detailed portion of the same image may be produced with multiple contiguous display elements having the same color. The gate circuit described herein may allow multiple rows to be activated to produce output from at least some of their display elements at the same time as one another.