Display Control Apparatus Previewing Image Size Before Decoding
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Solution Overview
Problem
Existing image display systems in devices like multi-function printers face inefficiencies when changing display magnification, requiring multiple decodings of image data, which increases processing load and time, especially when displaying multiple images simultaneously.
Innovation Solution
An apparatus with a control unit and instruction unit that manages display size switching by visually indicating the new size before decoding, allowing for efficient switching between different numbers of displayed images without redundant decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple digital images are displayed by decoding image data to a certain size, then multiple images can be displayed simultaneously, but the processing load increases and redisplay takes time when display magnification is changed
Solution Approach 1:
The patent applies preliminary action by displaying a visual indication (preview) of the second display size before actually performing the decoding and redisplay operation. This allows the user to see what the result will be before committing to the full processing operation, enabling faster decision-making and reducing the perceived redisplay time.
Solution Approach 2:
The patent uses copying by creating a visual copy or representation of what the displayed image will look like at the second display size. Instead of fully decoding and displaying the actual image data at the new size immediately, a visual indication (copy) is shown first, which requires minimal processing and can be updated quickly.
2Adaptability or versatility
If display magnification is changed after initial display, then new display size can be achieved, but the time period from rasterization to display increases
Solution Approach 1:
The patent creates a visual copy or preview representation of the image at the new display size without performing full rasterization. This copying approach allows the system to show what the display will look like before committing to the time-consuming rasterization process, thereby reducing the perceived time from size change request to display update.
Solution Approach 2:
The system performs preliminary visualization by showing a visual indication of the second display size before completing the full rasterization and display process. This preliminary action allows users to preview the result and makes the transition appear faster by separating the visualization step from the full processing step.
3Productivity
If multiple images are displayed, then simultaneous viewing is enabled, but decoding must be performed multiple times increasing processing load
Solution Approach 1:
The patent uses copying by generating visual indications (previews) of images at different display sizes without performing full decoding for each display size. This allows the system to present multiple images in different sizes with minimal processing load, as the visual indications are created from existing decoded data or simplified representations rather than requiring multiple full decodings.
Data Source
AI summary
An apparatus includes a memory, a processor, a control unit and an instruction unit. The control unit controls display on a display unit on which an image based on received image data is displayed. The instruction unit provides an instruction to switch a display size of the image on the display unit. When the instruction unit provides the instruction, in a state in which the image before the switching is performed is displayed on the display unit, the control unit causes display of a first object visually indicating a second display size of the image that is to be displayed on the display unit, the second display size being a size after the switching is performed, and, when the second display size is determined on the basis of the instruction from the instruction unit, the control unit causes display of the image based on the second display size.