2 results about "Wire protocol" patented technology

This application discloses a bidirectional communication system and method for board daisy chain based on a single-wire protocol, relating to the field of computer technology. This application constructs a single-bit serial protocol daisy chain system without an independent clock line, employing dual single-wire directed links or a single half-duplex shared link to achieve bidirectional transmission between boards. This significantly reduces the hardware connection harness and input / output resource usage, lowers connector and line costs, and is suitable for scenarios involving large-scale, low-cost board cascading. After power-on, master-slave identification is automatically completed based on the upstream valid frame reception status, avoiding conflicts between multiple master nodes without the need for preset DIP switches, configuration files, or external addressing commands. The motherboard uses a preset default address, and the slave boards use an allocation method where the upstream address is incremented hop by hop, ensuring a strict correspondence between physical cascading positions and logical addresses. This achieves automatic convergence with zero manual address configuration, improving system deployment and maintenance efficiency.

This invention relates to the field of digital information transmission technology and discloses a four-way protocol conversion method for photovoltaic equipment, comprising: an Ethernet control chip receiving the original protocol message of the photovoltaic power station and writing it into the source protocol receive buffer; using a memory offset pointer to match the message delimiter to determine the dynamic byte offset of the payload data; constructing a three-segment descriptor chain based on the offset, including the physical base address of the target protocol header, the physical base address of the payload data, and the base address of the checksum; and a distributed direct memory access controller extracting and aggregating heterogeneous data across physical memory pages according to the descriptor chain to generate continuous target protocol frames. This invention uses data pointer routing to replace byte copying, eliminates the physical reassembly process at the end of the protocol conversion, reduces the transmission latency of concurrent scheduling instructions, ensures the exchange efficiency of heterogeneous digital information streams, and enhances the response performance of the station-end communication system.