Overlapping Image Field Updates in Display Systems
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Solution Overview
Problem
Existing display systems face challenges in achieving high dynamic range and flexibility in field sequence configuration due to the limitations imposed by the minimum panel update period, which restricts the duration of image fields and affects the frame rate and power consumption.
Innovation Solution
The implementation of overlapping image field updates using multiple write pointers allows for concurrent updates across the array of pixels, enabling extremely short field durations and increased dynamic range without compromising power consumption, frame rate, complexity, or cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a single write pointer is used to update image fields sequentially, then the update process is simple and low-cost, but the field duration cannot be shorter than the minimum panel update period, limiting dynamic range
Solution Approach 1:
The patent divides the image field update process into multiple parallel segments by implementing multiple write pointer circuits (first write pointer circuit, second write pointer circuit, etc.). Each write pointer circuit independently traverses and updates a portion of the pixel array, allowing the overall update period to be segmented and overlapped, thereby enabling field durations shorter than the minimum sequential update period.
Solution Approach 2:
The patent transitions from a single-dimensional sequential update approach to a multi-dimensional parallel update approach by introducing multiple write pointer circuits operating simultaneously. This dimensional expansion in the update process allows overlapping update periods and achieves shorter effective field durations without proportionally increasing system complexity.
2Adaptability or versatility
If multiple write pointers are used to enable overlapping updates, then dynamic range and field sequence flexibility are improved, but device complexity increases
Solution Approach 1:
The patent designs multiple write pointer circuits with identical functional capabilities, where each circuit can independently perform the same image field update traversal operation. This universality allows the system to achieve enhanced adaptability and field sequence flexibility through parallel operation of identical modules, rather than requiring complex specialized circuits for each function.
Solution Approach 2:
The patent implements preliminary action by having multiple write pointer circuits prepare and execute update operations in overlapping time periods. The first write pointer circuit begins its traversal while the second write pointer circuit is already positioned or preparing to traverse, allowing updates to be pipelined and executed in advance of what would be possible with sequential processing.
3Productivity
If overlapping update periods are implemented, then extremely short field durations are achieved, but power consumption may increase due to concurrent operations
Solution Approach 1:
The patent maintains continuity of useful action by ensuring that multiple write pointer circuits operate in an overlapping, continuous manner rather than with idle gaps. The update periods are arranged to overlap such that the pixel array receives continuous update operations, maximizing productivity while the overlapping structure allows for efficient resource utilization and reduced total operational time, thereby managing power consumption effectively.
Data Source
AI summary
An illustrative display system includes an array of pixels and a frame controller configured to cause the array of pixels to display an image frame by performing a series of successive field updates. The series of successive field updates includes a first field update in which a first write pointer circuit tracks a first traversal, during a first update period, across the array of pixels to update the array of pixels from a first to a second image field in the sequence, and a second field update in which a second write pointer circuit tracks a second traversal, during a second update period, across the array of pixels to update the array of pixels from the second to a third image field in the sequence. The second update period of the second field update overlaps the first update period of the first field update.