Portable Playback Device Inclination Control for One-Handed Operation
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Solution Overview
Problem
Users face difficulties in performing flick operations or changing reproduction positions on portable information terminals, especially when holding them with one hand, making it hard to navigate content data in situations like standing on a train.
Innovation Solution
A portable reproduction device equipped with inclination detection means, determination means, and reproduction control means that change the content data position based on the device's inclination direction and duration, allowing users to adjust playback with hand-held devices more easily.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If flick operation is used to change reproduction position, then the operation can be performed quickly, but the user cannot perform it when both hands are occupied
Solution Approach 1:
The system uses the device itself (its inclination) to perform the operation, rather than requiring external input from the user's hand. The inclination detection means detects the device's tilt state, and the reproduction control means automatically changes the reproduction position based on this detected state, making the device serve itself for operation.
Solution Approach 2:
The mechanical flick operation (manual gesture) is replaced by an automatic sensing system. The inclination detection means (sensor system) substitutes for the manual mechanical gesture, detecting the device's physical state and triggering the appropriate reproduction control action automatically.
2Area of stationary object
If the device size is increased for better display, then the display quality is improved, but the device becomes harder to hold and operate with one hand
Solution Approach 1:
The larger device performs operations automatically by detecting its own inclination state, eliminating the need for complex manual gestures that would be difficult on a large device. The reproduction control means responds to the device's natural tilt movements, making operation as easy as tilting the device.
Solution Approach 2:
The operation interface moves from the two-dimensional touch screen surface to the three-dimensional spatial orientation of the device. Instead of requiring precise finger movements on the screen, the user tilts the device in space, adding a spatial dimension to the interaction that is more suitable for larger devices.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates user operation for changing reproduction positions on portable devices by enabling page turning and bookmark registration through device inclination, enhancing usability even when hands are occupied.
Implementation Method 1
inclination detection means for detecting an inclination of the portable reproduction device
Data Source
AI summary
In a case where an inclination state of the portable reproduction device is changed from a reference state to another state in which a difference from the reference state in inclination is equal to or larger than a reference value and thereafter returns from the other state to the reference state, a determination unit determines whether or not the period of time elapsed after the inclination state starts changing from the reference state to the other state until the inclination state returns to the reference state is within a reference period of time. In a case where the determination unit determines that the period of time elapsed is within the reference period of time, a production control unit changes the reproduction position of the content data, based on a direction of inclination of the portable reproduction device in the other state relative to the reference state.