Wireless Accessory Protocol Virtual Port Connection
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Solution Overview
Problem
Existing accessory protocols are designed for wired communication and lack efficient methods for wireless communication between host devices and accessories, requiring modifications and user intervention for establishing connections.
Innovation Solution
The solution enables wireless communication between host and accessory devices using existing accessory protocols without modification, allowing for automatic connection and selective encryption, with both devices actively participating in establishing a wireless channel by creating and identifying virtual ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If wired accessory protocols are used for wireless communication, then existing protocols can be used without modification, but connection establishment requires active participation from both devices and virtual port creation
Solution Approach 1:
The host device creates and identifies a virtual port in advance before the accessory initiates communication. This preliminary setup of the communication channel eliminates the need for complex real-time negotiation during connection establishment, allowing the accessory to simply connect to the pre-configured virtual port.
2Ease of operation
If automatic connection is implemented, then user intervention is eliminated, but connection management complexity increases
Solution Approach 1:
The system implements automatic connection functionality where the host device autonomously detects accessories, creates virtual ports, and establishes connections without user intervention. The connection management is self-service in nature, with the host device automatically managing the connection lifecycle including detection, port creation, and reconnection scenarios.
3Reliability
If selective encryption is implemented within the accessory protocol, then security is enhanced, but communication complexity increases
Solution Approach 1:
The encryption is applied selectively to specific accessory protocol communications rather than all wireless communications. This local quality approach allows encryption to be implemented only where needed within the accessory protocol framework, enhancing security for sensitive data while avoiding the complexity of encrypting all communications uniformly.
Data Source
AI summary
An accessory can communicate wirelessly with a host device such as a portable electronic device. Existing accessory protocols developed for wired communication can be used without modification, and a wireless network connecting the two devices can provide a transport or channel connecting the two devices. Establishing a wireless channel can involve the active participation of both devices. For instance, the host device can create and identify virtual port to be used by the accessory, after which the accessory can initiate communication on that virtual port. A host device can be configured to automatically connect to certain accessories upon detection of that accessory on a wireless network under various specific conditions. Encryption of accessory-protocol communications between an accessory and a host device is also provided.