Dynamic Slider Bar Length Adjustment via Device Orientation
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Solution Overview
Problem
Operating slider elements on portable devices with small display areas is cumbersome due to the difficulty in precisely moving the slider a small distance to select data from a large data range, such as jumping back 30 seconds in a 2-hour video stream, which requires a very small and precise finger swipe on a 70 mm slider bar.
Innovation Solution
The system adjusts the data range represented by the slider bar based on the orientation of the portable device, allowing indirect control of sensitivity by tilting the device, changing the data range from a default +/-1 minute to +/-120 minutes when tilted, enabling intuitive data selection even on small displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the slider bar length is kept fixed on a small display, then the device maintains a compact form factor, but the precision of slider manipulation deteriorates making it difficult to select data points
Solution Approach 1:
The slider bar dynamically adjusts its length based on the device's orientation state. When the device is tilted beyond a threshold angle, the slider bar extends to a second length greater than its first length in the default state. This dynamic adjustment allows the slider bar to adapt to different usage scenarios, providing sufficient manipulation precision when needed while maintaining a compact appearance during normal use.
Solution Approach 2:
The system changes the physical parameter of the slider bar (its length) based on the device orientation parameter. When the device is tilted beyond a threshold angle, the slider bar's length parameter changes from a first length to a second length, enabling users to access a broader data range and improve selection precision without requiring a larger display area.
2Measurement precision
If the slider bar is made longer to improve data selection precision, then manipulation precision improves, but the device size and display area requirements increase
Solution Approach 1:
Instead of permanently increasing the slider bar length, the system implements a dynamic adjustment mechanism. The slider bar remains at a compact first length during normal horizontal use, then extends to a longer second length when the device is tilted beyond a threshold angle. This allows high precision data selection to be achieved temporarily when needed, while maintaining a compact form factor during regular use.
3Adaptability or versatility
If the data range is expanded to cover the entire video stream, then the slider can represent the full content duration, but the granularity for selecting specific time points decreases
Solution Approach 1:
The slider bar's data range mapping dynamically adjusts based on device orientation. In the default horizontal state, the slider provides fine-grained control for precise time point selection. When tilted beyond a threshold, the slider bar extends and reconfigures to provide broader data range coverage while maintaining appropriate granularity through the extended scale.
Data Source
Figure 1
Figure 2(A)~2(C)
Figure 3(A)~3(B.3)
AI summary
There is provided a method and system of providing a slider bar control via a slider bar displayed on a graphical user interface of a portable device, comprising providing a slider bar (30) on the graphical user interface (20), wherein the slider bar (30) defines a data range (R) from which data can be selected by the user, and providing a slider element (31) associated with the slider bar (30) for selecting at least one item of data from the data range (R) by manipulating the slider element (31) through touch by a user input member. The data range (R) is changed in response to an orientation change of the portable device (10) when the orientation of the portable device (10) is changed from a first orientation (α0) to a second orientation (α1).