Digital Camera Proximity Wireless Communication Control
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Solution Overview
Problem
Existing communication technologies, such as those described in Japanese Patent Laid-open No. 2002-204239, do not account for the power saving state of digital cameras, leading to potential misidentification of the cause of recovery to the normal state, which can result in inappropriate processing when a smartphone moves away during the recovery period, disrupting wireless LAN connection establishment.
Innovation Solution
A communication apparatus and method that utilize a parameter acquisition completion flag written into the proximity wireless communication non-volatile memory by the smartphone, allowing the digital camera to determine the cause of recovery and activate wireless LAN only when necessary, ensuring accurate identification of the interruption cause and reducing unnecessary power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the digital camera uses proximity wireless communication function to exchange parameters for wireless LAN connection, then easy establishment of wireless LAN connection is achieved, but when the camera is in power saving state and the smartphone moves away during recovery period, the camera cannot accurately identify the cause of recovery, resulting in inappropriate processing
Solution Approach 1:
The digital camera writes a parameter acquisition completion flag into non-volatile memory before entering power saving state. This preliminary action ensures that when the camera recovers from power saving state, it can accurately determine whether the recovery was caused by a read command or write command by checking the flag, even if the smartphone moves away during the recovery period.
Solution Approach 2:
A parameter acquisition completion flag is introduced as an intermediary indicator in the non-volatile memory of the digital camera. This flag serves as a mediator between the proximity wireless communication function and the main control unit, allowing the camera to accurately identify the cause of recovery without requiring the smartphone to remain in proximity during the recovery period.
2Reliability
If the digital camera maintains power supply to the proximity wireless communication function during recovery, then accurate identification of interruption cause is possible, but power consumption increases
Solution Approach 1:
The digital camera performs preliminary actions by writing the parameter acquisition completion flag into non-volatile memory before entering power saving state. This allows the camera to enter power saving state with confidence that the flag is set, and upon recovery, it can check the flag to determine the cause of recovery without needing to maintain continuous power supply to the proximity wireless communication function.
Solution Approach 2:
The non-volatile memory serves itself by retaining the parameter acquisition completion flag without requiring continuous power supply. This self-service characteristic allows the camera to accurately identify the cause of recovery after power saving state without needing to maintain power to the proximity wireless communication function during recovery.
3Use of energy by moving object
If the digital camera enters power saving state to reduce power consumption, then energy efficiency is improved, but the time required for recovery and potential loss of communication opportunity increases
Solution Approach 1:
The digital camera performs preliminary actions by setting the parameter acquisition completion flag in non-volatile memory before entering power saving state. This preliminary preparation ensures that upon recovery, the camera can immediately check the flag and determine the cause of recovery without delay, minimizing the effective communication opportunity loss.
Solution Approach 2:
The parameter acquisition completion flag provides feedback information that allows the digital camera to quickly determine whether to proceed with wireless LAN connection establishment after recovery. This feedback mechanism enables the camera to make rapid decisions post-recovery, reducing the effective time loss associated with power saving state transitions.
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 the digital camera to accurately determine the cause of recovery and activate wireless LAN connections only when required, thereby reducing power consumption and ensuring proper processing, even when the smartphone moves away during the recovery period.
Implementation Method 1
the proximity wireless communication function operates by transforming the magnetic field generated by the smartphone into electrical power
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
There is provided a communication apparatus. Proximity communication means is adapted to communicate with an external apparatus by proximity wireless communication. Control means is configured to control an operation of the communication apparatus. The proximity communication means provides a notification to the control means in response to receiving a write request from the external apparatus via the proximity wireless communication. The proximity communication means does not provide a notification to the control means in response to receiving a read request from the external apparatus via the proximity wireless communication.