Pan Tilt Camera Cross Key Posture Adaptation
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Solution Overview
Problem
Conventional pan and tilt camera systems experience discomfort during remote operation due to the camera rotating instead of moving when the pan direction control signal is input, especially when the imaging optical axis aligns with the pan mechanism's central axis, leading to a mismatch between intended movement and actual video capture direction.
Innovation Solution
A pan and tilt operation device that includes a posture information acquisition unit, touch panel with display and operation panels, key operation detection, motor control assignment setting, and motor driving command output, which adjusts motor control based on the camera's installation posture to ensure accurate movement directions and switches icons on the display to indicate rotation when necessary, allowing for comfortable operation regardless of the camera's posture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the pan and tilt camera system uses a conventional direction operation means to control pan and tilt movements, then the camera can be remotely operated, but when the imaging optical axis aligns with the pan mechanism's central axis, the video rotates instead of moving in the intended direction, causing operator discomfort
Solution Approach 1:
The system dynamically adjusts the control signal processing based on the detected camera posture. When the imaging optical axis aligns with the pan mechanism's central axis, the control system automatically switches to a different signal processing mode that prevents video rotation, ensuring accurate movement direction across different operational conditions
Solution Approach 2:
The discrimination means detects the camera's installation posture and provides feedback to the control means. This feedback enables the control system to automatically adjust the direction control signal processing, switching between different control modes depending on whether the imaging optical axis aligns with the pan mechanism's central axis, thereby maintaining reliable movement direction control
2Device complexity
If the camera system maintains fixed up, down, left, and right movement directions regardless of installation posture, then the control logic remains simple, but the video rotation occurs during pan operations when the imaging optical axis aligns with the pan mechanism's central axis
Solution Approach 1:
The control system transitions from a static control logic to a dynamic one that adapts based on detected posture conditions. The control means switches between different signal processing approaches depending on whether the imaging optical axis aligns with the pan mechanism's central axis, resolving the video rotation issue while maintaining manageable system complexity
3Ease of manufacture
If the pan and tilt mechanism is installed in a specific posture (imaging optical axis aligning with pan mechanism's central axis), then the installation is simplified, but the video rotates instead of moving horizontally during pan operations
Solution Approach 1:
The discrimination means detects the installation posture and provides feedback to the control system. When the imaging optical axis is detected to align with the pan mechanism's central axis, the control means automatically adjusts the direction control signal processing to prevent video rotation, thereby maintaining video movement accuracy without compromising installation simplicity
Solution Approach 2:
The system automatically detects and compensates for the specific installation condition without requiring manual configuration or complex mechanical adjustments. The control means self-adjusts the signal processing based on the detected posture, eliminating the need for precise manual installation while maintaining accurate video movement
Data Source
AI summary
In an aspect of the present invention, assignment and a rotation direction of a pan motor and a tilt motor of each key of a cross key are set on the basis of the installation posture of the camera. Accordingly, it is possible to operate the cross key without discomfort when the camera is caused to perform a pan operation or a tilt operation using the cross key. Further, if the camera is caused to perform the pan operation using the cross key and a specific condition under which a video rotates is discriminated from a tilt angle, a display of a corresponding icon of the cross key is switched from a first icon indicating an up and down direction or a left and right direction to a second icon indicating a rotation direction. Accordingly, it is possible not to cause discomfort even when a video rotates.