Wireless Power Transmitter Data Exchange Prior to Connection
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Solution Overview
Problem
Current wireless power transmission systems face inefficiencies in establishing connections between power transmitting units (PTUs) and power receiving units (PRUs, as they require additional data lookups and cross-checks, which can delay the initiation of wireless charging and firmware updates, especially when dealing with devices from different manufacturers.
Innovation Solution
The system communicates device-specific data through advertising messages before connection establishment, allowing PTUs to select PRUs based on manufacturer-specific information, firmware compatibility, and charging states, thereby reducing the need for additional data requests and avoiding cross-connection checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional data lookups and cross-checks are performed during connection establishment, then connection reliability is improved, but connection establishment time increases
Solution Approach 1:
The patent applies preliminary action by including device-specific data in advertising messages before connection establishment. The PRU publishes manufacturer-specific data, firmware version, and charging state information in advance through advertising messages, allowing the PTU to perform compatibility checks and select appropriate devices without requiring additional data lookups during connection establishment, thus reducing time while maintaining reliability
2Speed
If device-specific data is communicated through advertising messages, then connection establishment speed is improved, but data transmission complexity increases
Solution Approach 1:
The patent applies universality by using advertising messages, which are already part of the standard Bluetooth Low Energy protocol, to serve multiple functions: device discovery, basic information exchange, and device-specific data communication. This multi-functional use of existing infrastructure achieves fast connection establishment without adding significant transmission complexity
3Adaptability or versatility
If manufacturer-specific information is included in advertising messages, then device compatibility selection is improved, but message size increases
Solution Approach 1:
The patent applies extraction by separating device-specific data into distinct fields within the advertising message structure. Manufacturer-specific information, firmware version, and charging state are extracted as separate data elements that can be selectively processed. This allows the PTU to efficiently parse only the relevant compatibility information without processing the entire message, maintaining fast selection while managing message size
Data Source
AI summary
A power transmitting device includes a processor circuit. The processor circuit receives messages, such as advertising messages and/or scan response messages, from power receiving devices. The messages include device specific data that pertains to the corresponding power receiving devices that transmitted the messages. The device specific data includes, for example, data pertaining to the hardware, firmware, charging state, and/or device state of the corresponding power receiving device. The processor circuit selects one of the power receiving devices based in part on the device specific data contained in the messages. The processor circuit initiates a wireless power transfer connection to the selected one of the power receiving devices.