Image Capture Device Mode Switching Control Logic
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Solution Overview
Problem
Conventional digital cameras require time-consuming operations to switch between capture and playback modes, as they necessitate separate actions for power on/off and mode changes, which can be inconvenient for urgent shooting or reviewing images.
Innovation Solution
An image capture device with dedicated capture mode and playback mode keys that allow users to toggle power on/off and switch modes with single-button operations, eliminating the need for a separate power button and reducing the number of buttons required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate power switch and mode changeover switch are used, then power control and mode switching can be independently performed, but operation time increases and ease of operation deteriorates
Solution Approach 1:
The patent combines the power switch and mode changeover switch into a single integrated switch unit. This switch has multiple positions that simultaneously control power state and capture/playback mode, allowing users to perform both functions with a single operation rather than requiring separate switches and multiple操作步骤.
Solution Approach 2:
The integrated switch serves multiple functions: it controls power on/off states and simultaneously selects between capture mode and playback mode. This multi-functional design eliminates the need for separate dedicated switches for each function, reducing the total number of components and simplifying the user interface.
2Productivity
If mode changeover switch passes through center stop position, then power can be turned off during mode switching, but time is taken to set camera to enable state
Solution Approach 1:
The switch is designed with predetermined stop positions that directly correspond to functional states (capture mode and playback mode). When switching between modes, the switch moves directly from one functional position to another without requiring passage through a center off position, thereby preliminarily establishing the desired state and eliminating unnecessary intermediate steps.
Solution Approach 2:
The patent eliminates the center stop position that would require the switch to pass through during mode changes. By removing this intermediate position, the switch can directly transition between capture and playback modes, skipping the power-off intermediate state and thereby reducing the time required for mode switching.
3Loss of time
If single button operation is implemented, then ease of operation improves and operation time reduces, but device complexity increases
Solution Approach 1:
The integrated switch is segmented into distinct positional stops, each corresponding to a specific functional state. The switch mechanism is divided into discrete positions (power on with capture mode, power on with playback mode, power off) that provide clear tactile feedback and unambiguous state identification, making the complex multi-functional switch easier to understand and operate.
Data Source
AI summary
In an image capture device, if the power is off when the capture mode key is depressed the power is turned on and the device enters the capture mode, if the device is in the playback mode when the capture mode key is depressed the mode is switched to the capture mode, if the device is in the capture mode when the capture mode key is depressed the power is turned off, if the power is off when the playback mode key is depressed, the device enters the playback mode and the power is turned on, if the device is in the playback mode when the playback mode key is depressed, the power is turned off, and if the device is in the capture mode when the playback mode key is depressed, the mode is switched to the playback mode.