Network Camera Audio Muting During Panning and Tilting
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Solution Overview
Problem
Conventional network cameras with built-in microphones face issues with erroneous audio detection due to driving sounds during panning and tilting operations, as existing techniques fail to effectively mute or disable audio recording and detection during these processes, leading to inconvenience and potential false alarms.
Innovation Solution
An image capturing apparatus with an audio input unit and a driving unit that attenuates or disables audio output when the driving unit is in operation, using a control unit to compare with predetermined determination conditions to manage audio muting based on the state of the driving unit, thereby reducing unnecessary audio data and preventing erroneous detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If audio recording is enabled during panning/tilting operations, then audio data can be continuously recorded, but driving sounds are erroneously recorded and detected
Solution Approach 1:
The system performs preliminary action by disabling audio recording and detection before the driving unit actually produces driving sounds. The control unit determines that the driving unit is in a driving state based on control signals, and proactively disables the audio functions in advance, preventing the erroneous recording of driving sounds before they occur.
Solution Approach 2:
The harmful element (driving sounds) is extracted from the audio data stream by disabling the audio recording and detection functions during the driving state. This separates the useful audio recording function from the periods when it would capture harmful driving sounds, ensuring only genuine audio events are recorded.
2Reliability
If audio detection is disabled during panning/tilting operations, then erroneous detection is prevented, but audio monitoring function is interrupted
Solution Approach 1:
The audio recording and detection functions are made dynamic rather than static. The system dynamically adjusts the state of audio functions based on the real-time operating state of the driving unit. When the driving unit is in a driving state, audio functions are disabled; when in a stopped state, audio functions are enabled. This dynamic adjustment optimizes both detection accuracy and monitoring availability.
Solution Approach 2:
The system uses feedback from the driving unit's state to control the audio functions. The control unit receives feedback about whether the driving unit is in a driving or stopped state, and based on this feedback, automatically enables or disables audio recording and detection. This closed-loop control ensures audio functions are appropriately managed without manual intervention.
3Stability of the object's composition
If post-driving excitation is applied to stabilize mechanical components, then mechanical stability is improved, but additional sounds are produced after driving
Solution Approach 1:
The system applies preliminary action by extending the disabled state of audio functions beyond the actual driving period to cover the post-driving excitation period. Since post-driving excitation produces sounds that could be erroneously detected, the audio functions remain disabled during this transition period until the driving unit is firmly in a stopped state, preventing erroneous detection of stabilization sounds.
4Manufacturing precision
If edge-contact operation is performed for initial positioning, then positioning accuracy is improved, but audio functions are intermittently enabled/disabled
Solution Approach 1:
The system applies preliminary action by proactively disabling audio functions before the edge-contact operation begins and keeping them disabled throughout the positioning process. This prevents the intermittent enabling/disabling that would occur if audio functions were enabled after each positioning step, providing a smooth, continuous disabled state that eliminates user-perceivable interruptions while maintaining positioning accuracy.
Data Source
AI summary
An image capturing apparatus including an audio input unit and a driving unit attenuates or disables driving sounds of the driving unit and post-driving sounds as appropriate to reduce unnecessary sounds and improve usefulness of audio data, and an image capturing apparatus including an image capturing unit, a panning/tilting unit configured to change an image capturing direction, and an audio input unit attenuates or disables an audio-related function while the panning/tilting unit is driving and until a predetermined determination condition is satisfied after the driving.