Key Scan Circuit Layout for Priority Gaming Key Response
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Solution Overview
Problem
Current mechanical keyboards do not adequately enhance the response speed of specific keys, which are crucial for e-sports and gaming, as they uniformly improve all key responses rather than focusing on frequently used keys.
Innovation Solution
A key scanning method that interspersedly scans crucial keys using a combination of main and secondary scan lines, increasing the frequency of scans for these keys to reduce the scan period and improve response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If uniform scanning method is used for all keys, then all keys have equal response time, but crucial keys cannot achieve faster response speed
Solution Approach 1:
The patent segments the key set into crucial keys (first key group) and non-crucial keys (second key group), applying different scanning frequencies to each segment. The main scan line repeatedly scans the first key group while secondary scan lines scan the second key group, enabling crucial keys to be scanned more frequently without completely neglecting other keys.
Solution Approach 2:
The patent applies local quality by giving different scanning priorities to different regions of the keyboard. The first key group (crucial keys) is scanned with higher frequency and priority using the main scan line, while the second key group is scanned with lower frequency using secondary scan lines, optimizing response speed where it matters most.
2Loss of time
If scanning frequency of crucial keys is increased, then response time of crucial keys is shortened, but scan period of other keys is extended
Solution Approach 1:
The patent implements dynamic scanning where the scanning frequency and pattern adapt based on key importance. The main scan line dynamically repeats scans of the first key group multiple times within a scan cycle, while secondary scan lines handle the second key group, creating a flexible scanning rhythm that prioritizes crucial keys while maintaining periodic coverage of all keys.
Solution Approach 2:
The patent uses periodic action by structuring the scanning process into cycles where the main scan line periodically revisits the first key group multiple times, interspersed with scans of the second key group by secondary scan lines. This creates a rhythmic scanning pattern that ensures crucial keys are scanned more frequently while all keys receive periodic attention.
Data Source
AI summary
A key scanning method, a scan method for a key scan circuit, and an input device thereof are provided. The key scanning method comprises performing a first scan procedure which includes triggering a first main scan line and reading electrical signals received via a plurality of signal sensing lines to determine whether any of the keys among a first key group is triggered. Then, performing a second scan procedure which includes triggering at least one of a plurality of secondary scan lines and reading the electrical signals received via the plurality of signal sensing lines to determine whether any of the keys among a second key group is triggered. In the key scanning method, the first scan procedure and the second scan procedure are performed one after another, and each of the secondary scan lines is triggered at least once.