Media Device Pairing via GUID Exchange for PTP/IP Compatibility
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Solution Overview
Problem
Legacy PTP devices lack TCP/IP network compatibility, preventing them from connecting to PTP/IP enabled devices and supporting multiple devices on a network, which limits their ability to transfer images and metadata effectively.
Innovation Solution
A method for establishing a paired connection between media devices using a protocol that allows for device pairing through an exchange of GUIDs and Friendly Names, enabling TCP/IP network compatibility and allowing legacy devices to connect with PTP/IP enabled devices, even without a common physical network link, by using User Datagram Protocol (UDP) for message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy PTP devices use traditional PTP protocol, then they can transfer images effectively, but they lack TCP/IP network compatibility and cannot connect to PTP/IP enabled devices
Solution Approach 1:
The patent introduces a pairing mechanism as an intermediary layer between legacy PTP devices and PTP/IP enabled devices. This pairing process exchanges GUIDs and Friendly Names through UDP messages, creating a bridge that enables communication between devices using different protocol versions without requiring both devices to support the same protocol simultaneously
Solution Approach 2:
The patent makes PTP devices universally compatible by enabling them to function in multiple network environments. Devices can now operate both as traditional PTP devices and as PTP/IP devices through the pairing mechanism, allowing a single device to connect to various types of networked devices including printers, scanners, and other imaging devices regardless of their specific PTP implementation
2Adaptability or versatility
If PTP devices support multiple connections, then network functionality is enhanced, but device complexity increases
Solution Approach 1:
The patent segments the connection establishment process into distinct phases: discovery phase where devices broadcast their presence, pairing phase where GUIDs and Friendly Names are exchanged, and connection phase where actual data transfer occurs. This segmentation allows complex multi-device support to be managed through simple, sequential steps rather than requiring complex simultaneous management of all connections
3Adaptability or versatility
If legacy devices are upgraded for TCP/IP compatibility, then network connectivity is improved, but their original PTP functionality may be compromised
Solution Approach 1:
The patent implements a dynamic protocol selection mechanism where devices can adaptively switch between traditional PTP and PTP/IP modes based on the capabilities of the connected device. The pairing mechanism determines the appropriate protocol version to use, allowing legacy devices to maintain their original PTP functionality when connecting to legacy devices while automatically enabling TCP/IP compatibility when connecting to PTP/IP enabled devices
Data Source
AI summary
A method for establishing a paired connection between first and second media devices across a network includes transmitting a first information message across the network including an identifier that includes a request to pair the first and second media devices. When a second information message is received from the second media device within a first predetermined time period, the first device retrieves an identifier of the second device and transmits a confirmation message across the network including the device identifiers. A paired connection between the media devices is completed after a corresponding confirmation message from the second device is received within a second predetermined time period.