Image Display Device Channel Scroll Bar Navigation
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Solution Overview
Problem
Existing image display devices require lengthy key presses or numeric inputs to switch channels, making it time-consuming to navigate through multiple channels.
Innovation Solution
An image display device with a sensor to detect long presses of channel-up or channel-down keys, displaying a scroll bar and indicator, allowing users to move and select channels without numeric input, using a processor to switch channels based on indicator position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a channel-up key or channel-down key is pressed repeatedly or for a long time to switch channels, then channel switching function is achieved, but channel switching time becomes excessively long
Solution Approach 1:
The patent introduces a visual dimension by displaying a channel scroll bar with multiple channel indicators on the screen. Instead of switching channels through sequential key presses, the user can visually locate the desired channel on the scroll bar and switch to it directly, transforming a one-dimensional sequential switching process into a two-dimensional visual selection process that dramatically reduces switching time
2Loss of time
If a numeric key is used to input channel number for direct channel switching, then channel switching speed is improved, but device complexity increases due to requirement of numeric keypad
Solution Approach 1:
The patent makes the display screen serve multiple functions: it acts as both the content display area and the channel selection interface through the channel scroll bar. This eliminates the need for a separate numeric keypad while maintaining fast channel switching capability, as the same display device provides both viewing and selection functions
Data Source
AI summary
An image display device includes: a processor; a memory configured to store channel information corresponding to at least one channel; and at least one program which is stored in the memory and executed by the processor. The program may include instructions for controlling a display so as to move a channel indicator in a first or second direction on a channel scroll bar and to display channel information of a channel corresponding to a point at which the channel indicator is located, in response to a first input of pressing a channel-up or channel-down key for a long time, and for switching a current channel to the channel corresponding to the point at which the channel indicator is located and displaying an image corresponding to the switched channel, in response to a second input of releasing the channel-up or channel-down key.