Rotatable Dual Display Digital Camera Brightness Adaptation
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Solution Overview
Problem
Existing digital cameras face challenges in displaying live view images effectively in bright conditions due to the limitations of transmissive type color liquid crystal display devices and reflective type monochrome liquid crystal display devices, particularly in low-angle imaging scenarios, where visibility is compromised by strong external light and increased power consumption.
Innovation Solution
A digital camera design featuring a first display unit that can rotate and change its posture relative to the camera body, combined with a second display unit, includes a posture detection unit and an illuminance detection unit to automatically adjust the display form based on light intensity and relative posture, ensuring that live view images and camera information are visible even in difficult lighting conditions, and can be easily viewed by changing the gaze direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a transmissive type color liquid crystal display device is used to display live view images, then color visibility is improved, but power consumption increases and visibility in bright external light conditions deteriorates
Solution Approach 1:
The patent applies dynamics by making the display device rotatable rather than fixed, allowing the user to change the display angle dynamically. This enables the user to position the display at optimal angles relative to external light sources, improving visibility in bright conditions without requiring additional backlighting or increasing power consumption.
Solution Approach 2:
The patent adds a rotational dimension to the display device, transforming it from a fixed 2D plane to a dynamically adjustable 3D structure. This dimensional change allows the display to orient itself away from direct external light sources, solving the visibility problem in bright conditions without affecting power consumption.
2Use of energy by moving object
If a reflective type monochrome liquid crystal display device is used to reduce power consumption, then power consumption is reduced, but visibility in dark external light conditions deteriorates
Solution Approach 1:
The rotatable display device allows users to dynamically adjust the display angle to optimize visibility in different lighting conditions. In dark environments, users can position the display to maximize ambient light reflection or minimize the impact of darkness, maintaining visibility while keeping power consumption low.
Solution Approach 2:
The patent changes the physical parameter of display orientation through rotation. By adjusting the angle of the display relative to external light sources and the user's line of sight, the system optimizes visibility in dark conditions without switching to a higher power consumption mode.
3Device complexity
If the display device is fixed on the camera body, then device complexity is reduced, but adaptability to different imaging angles deteriorates
Solution Approach 1:
The display device is made rotatable, transforming it from a fixed structure to a dynamic one. This allows the display to adapt to different imaging angles and user positions, significantly improving versatility for various shooting scenarios such as low-angle or high-angle photography, while adding only moderate complexity through the rotation mechanism.
Solution Approach 2:
The rotatable display serves multiple functions: it can be positioned for front-facing selfies, low-angle shooting, high-angle shooting, and traditional rear-facing viewing. This multi-functionality makes the camera adaptable to diverse imaging scenarios without requiring multiple separate display devices.
4Device complexity
If the display rotates with the camera body, then structural simplicity is maintained, but independent visibility adjustment capability is lost
Solution Approach 1:
The display is equipped with an independent rotation capability, allowing it to move separately from the camera body. This dynamic independence enables users to adjust the display angle for optimal visibility regardless of the camera's orientation, greatly improving ease of operation in various shooting positions.
Solution Approach 2:
The display system is segmented into an independent rotatable component separate from the main camera body structure. This segmentation allows the display to be controlled and positioned independently, providing users with flexible visibility adjustment capabilities without complicating the overall control system.
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
This solution allows for effective framing and image capture in low-angle scenarios by ensuring that essential information is displayed on either the first or second display unit, depending on lighting conditions, maintaining visibility and reducing power consumption.
Implementation Method 1
an illuminance detection unit that directly or indirectly detects intensity of light radiated to a display screen of the first display unit
Implementation Method 2
a posture detection unit that detects a relative posture relationship between the first display unit and the second display unit
Data Source
AI summary
A first display unit is a variable-angle liquid crystal display device, and is a transmissive type color liquid crystal display device that mainly displays a live view image. A second display unit is a reflective type monochrome liquid crystal display device that mainly displays camera information items. In a case where it is difficult to view a display screen since intensity of light radiated to the display screen of the first display unit is high and both the display screens of the first display unit and the second display unit are simultaneously visible by adjusting an angle of the display screen of the first display unit, information to be displayed on the second display unit is switched to information (a live view image of a binary image) for supporting framing from the camera information items.