Dynamic Preview Layout and Scroll Direction Switching
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Solution Overview
Problem
Conventional image display control devices for electrophotographic image forming apparatuses cannot change the layout direction or scrolling direction in preview displays when moving or inserting document pages, limiting user flexibility in editing and previewing document images.
Innovation Solution
An image display control device with a display controller that detects user-designated positions to switch the layout and scrolling directions dynamically, allowing for vertical or lateral arrangement of document images and enabling insertion or movement of new pages while adjusting finishing processes like stapling and page allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If document pages are always displayed vertically in preview mode, then the display layout is simple and consistent, but the user cannot change the layout direction to match binding margins or reading layout settings
Solution Approach 1:
The preview display layout direction is made dynamic and switchable between vertical and horizontal orientations based on user selection. The display controller detects the commanded position and switches the layout direction accordingly, allowing the system to adapt between fixed vertical display and user-selected orientations without increasing overall system complexity
Solution Approach 2:
The layout direction parameter in preview display is made changeable from a fixed vertical orientation to a selectable orientation (vertical or horizontal). This parameter change allows the display to match binding margins and reading layout settings while maintaining simple control through position-based detection
2Adaptability or versatility
If the scrolling direction is fixed in preview display, then the navigation is simple and predictable, but the user cannot scroll in the direction that matches the layout orientation
Solution Approach 1:
The scrolling direction in preview display is made dynamic and linked to the layout direction. When the layout direction switches between vertical and horizontal, the scrolling direction automatically adapts to match, providing consistent navigation behavior without requiring separate complex scroll controls
Solution Approach 2:
The scrolling direction parameter is made changeable in conjunction with layout direction changes. The display controller switches both layout and scroll directions based on the commanded position, allowing synchronized adaptation without increasing control complexity
3Adaptability or versatility
If document pages are displayed in preview representation with fixed layout, then the preview function is simple to implement, but the user cannot insert or move pages while maintaining proper layout orientation
Solution Approach 1:
The preview display system is made dynamic to support page insertion and movement operations. When pages are inserted or moved, the layout direction can switch to match the binding margins and reading layout settings, providing editing flexibility while keeping the control mechanism simple through position-based detection
Solution Approach 2:
The layout direction parameter in preview display is made changeable in response to page editing operations. This allows the preview to adapt to insertion and movement operations while maintaining proper orientation for binding margins and reading layout without complex control mechanisms
Data Source
AI summary
A control unit includes a touch panel display capable of presenting preview display of multiple pages of document images in a scrollable manner on the display panel. The touch panel display controller includes: a commanded position detecting controller that detects a commanded position relative to one of document images being a reference in the preview image displayed on a display panel; a preview layout direction switching controller that switches the layout direction in the preview image in accordance with the commanded position; and a scroll direction switching controller that switches the scrolling direction in the preview image in accordance with the detected commanded position.