Threshold-Based Slider Control for Precise Audio Volume Adjustment
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Solution Overview
Problem
Existing audio device volume control methods, such as sliding operations, struggle to provide precise adjustments and often result in unintended high volume levels due to rapid changes.
Innovation Solution
A parameter control device and method that includes a processing unit, display, and memory to detect operations on a slider, update the volume value based on operation amounts, and apply a threshold to control volume changes, ensuring precise adjustments and preventing sudden high volume increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a sliding operation is used to adjust volume, then the volume can be rapidly increased and reduced, but it becomes difficult to minutely adjust the volume value to desired magnitude
Solution Approach 1:
The patent applies dynamics by making the volume update behavior change based on the operation state. When the slider is being moved, the volume updates continuously at a fast rate. When the slider stops moving, the volume updates slow down to a threshold rate, enabling precise final positioning. This dynamic adjustment of update rates resolves the contradiction between rapid adjustment and precise control.
Solution Approach 2:
The patent implements periodic action through two distinct phases: a rapid update phase during active slider movement, and a threshold-limited update phase when the slider is stationary or moving minimally. This periodic switching between update modes allows the system to achieve both fast overall adjustment and precise final positioning.
2Productivity
If the slider is largely slid to rapidly increase volume, then the volume value is rapidly increased, but the volume becomes unexpectedly high due to improvident operation
Solution Approach 1:
The patent implements feedback by continuously monitoring the slider's movement state and using this information to control the volume update rate. When the slider stops or moves minimally (operation amount ≤ threshold), the system feedbacks a reduced update rate, preventing runaway volume increases from accidental large slides while still allowing rapid intentional adjustments.
Solution Approach 2:
The patent applies beforehand cushioning by preparing a threshold-limited update mode in advance that activates when the slider movement becomes small or stops. This pre-prepared protective mechanism cushions against unintended large volume changes by automatically reducing the update rate before the user can make an improvident operation that would cause unexpectedly high volume.
3Speed
If the volume is updated continuously during slider operation, then the volume responds quickly to user input, but the volume may change too rapidly when the slider is released
Solution Approach 1:
The patent applies dynamics by switching the volume update behavior based on the operation state. During active slider movement, updates occur rapidly for responsive control. When the slider is released or movement becomes minimal, the update rate dynamically reduces to the threshold level, ensuring stable final positioning and preventing runaway changes.
Solution Approach 2:
The patent uses feedback from the slider's movement detection to control the volume update rate. When movement stops or becomes minimal, the feedback triggers a reduction in update rate, maintaining both rapid response during adjustment and stability during final positioning.
Data Source
AI summary
A parameter control device includes a processing unit, a display that displays an operated portion, and a memory. The processing unit detects an operation on the operated portion, updates a display position of the operated portion according to the operation on the operated portion, and updates a value of a parameter according to the operation on the operated portion. The processing unit updates the parameter according to an operation amount in a case where the operation amount with respect to the operated portion is equal to or lower than a prescribed threshold. The parameter is updated according to a value of the threshold in a case where the operation amount exceeds the threshold.