LED Display Controller for Image Recording Apparatus Operational State
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional image recording apparatuses require an external display device to inform users of the current function and operational state, which is inconvenient if the external device is not available.
Innovation Solution
An image recording apparatus equipped with a plurality of light emitting diodes (LEDs) and an LED controller that adjusts the brightness and on/off state of the LEDs to display the operational state of functions such as play, record, fast forward, rewind, pause, and power up/down, using a CPU to output register values for duty cycle changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an external display device is used to display the operational state, then the information can be displayed, but the user convenience deteriorates when the external device is not available
Solution Approach 1:
The patent combines the display function with the image recording apparatus itself by integrating LEDs into the device. The LEDs are embedded in the housing to directly indicate operational states (recording, playing, pausing, etc.) without requiring external display devices, thus merging the information display capability into the core device structure.
Solution Approach 2:
The image recording apparatus serves itself by displaying its own operational state through integrated LEDs. The device independently provides visual feedback about its current function and status without relying on external equipment, enabling self-contained operation and user awareness.
2Ease of operation
If LEDs are integrated into the apparatus, then user convenience is improved, but the device complexity increases
Solution Approach 1:
The patent segments the display function from the main processing unit by using simple LED indicators controlled by a dedicated control circuit. This segmentation allows the complex display information to be represented by simple visual states, reducing the overall system complexity while maintaining functionality.
Solution Approach 2:
The patent applies different LED configurations and colors to specific functional areas of the device. Different LEDs or LED combinations indicate different operational states (e.g., red for recording, green for playing), providing localized visual feedback that simplifies the overall control system by using simple optical signals rather than complex electronic displays.
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
Enables users to visually display the operational state of functions without an external display device, enhancing user convenience by providing a self-contained LED display system.
Implementation Method 1
a plurality of light emitting diodes (LEDs) for displaying an operational state of each of the plurality of functions
Data Source
AI summary
Provided is an image recording apparatus having a plurality of functions, including a plurality of light emitting diodes (LEDs) for displaying an operational state of each of the plurality of functions; an LED controller for outputting to the plurality of LEDs a duty cycle for adjusting a brightness of the LEDs corresponding to the operational state of each of the plurality of functions; and a CPU for outputting to the LED controller a register value which changes the duty cycle corresponding to the operational state of each of the plurality of functions. Therefore, the image recording apparatus displays an operation state using its own LED so that the visual effect can be obtained to display the state of an operation of a presently performed function.