Bluetooth Transmission Power Calibration in Image Forming Devices
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Solution Overview
Problem
Existing communication systems using Bluetooth Low Energy face issues with determining the optimal transmission power, leading to potentially unnecessary high transmission levels due to time lags in response from communication partners, which can result in unintended communication with third parties.
Innovation Solution
An image forming device with a communication unit that adjusts transmission power based on specific communication methods and services, such as GATT profiles, to ensure appropriate transmission power levels for communication with information processing devices, including calibration processes to determine the minimally necessary transmission power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the transmission power of airwaves is increased in stages until a response is returned from the communication partner device, then the communication distance can be adjusted to an appropriate distance, but the transmission power may continue to increase unnecessarily due to time lags in the communication partner device's response
Solution Approach 1:
The communication device transmits airwaves at a predetermined high transmission power level before receiving any response from the communication partner device. This preliminary transmission ensures that the communication distance is adequately covered from the start, eliminating the need to wait for responses before increasing transmission power. The device proactively establishes sufficient transmission capability rather than reactively adjusting based on delayed feedback.
Solution Approach 2:
The communication device determines its own transmission power level independently without waiting for the communication partner device to respond. By using predetermined transmission power levels and not relying on feedback from the communication partner, the device autonomously manages its transmission characteristics, avoiding the time lag-induced delays in power adjustment.
2Object-affected harmful factors
If the transmission power of airwaves is restricted to restrict the distance over which information reaches, then unintended communication with third parties can be suppressed, but the transmission power may be set too low to ensure reliable communication
Solution Approach 1:
The communication device transmits airwaves at a predetermined high transmission power level before receiving any response from the communication partner device. This preliminary transmission ensures that the communication distance is adequately covered from the start, eliminating the need to wait for responses before increasing transmission power. The device proactively establishes sufficient transmission capability rather than reactively adjusting based on delayed feedback.
Solution Approach 2:
The communication device waits for a response from the communication partner device to determine when to switch to a lower transmission power level. The feedback mechanism allows the device to adjust transmission power dynamically based on actual communication needs, ensuring reliability while maintaining security. When the communication partner responds, the device knows transmission is successful and can reduce power accordingly.
Data Source
AI summary
An image forming device includes a communication unit communicating with an information processing device via a predetermined communication method, an printing unit performing printing based on a job received from the information processing device, at least one processor, and at least one computer-readable storage medium storing computer executable instructions, when executed by the at least one processor, cause the at least one processor to perform operations including transmitting first information including information based on a first transmission power at the first transmission power, receiving predetermined information from the information processing device, and transmitting, in a case where the predetermined information is received, second information at the first transmission power.