METHOD AND APPARATUS FOR RECOVERING ERROR IN RDM PROTOCOL

摘要

Disclosed herein is a method and apparatus that are capable of retransmitting lost RDM packets in RDM protocol to control various devices connected to DMX512 network. The method recovers an error in a remote controller for remotely controlling devices connected to DMX512 network via RDM protocol based on the DMX512 network. A RDM packet to be transmitted to each device is stored in a buffer, and then the RDM packet is transmitted to the device. A preset period of time is waited for so as to receive a response packet from the device. If the response packet is received within the preset period of time, a transaction number of the response packet is checked, and a sequence of the response packet with respect to previously arrived response packets is determined The corresponding RDM packet is retransmitted depending on a result of determination of the sequence.

主权项

1. An error recovery method in Remote Device Management (RDM) protocol, the error recovery method recovering an error in a remote controller for a remotely controlling device connected to Digital Multiplex (DMX) 512 network via RDM protocol, comprising:
transmitting a RDM packet to the device; if a response packet is received from the device within a preset period of time, determining a sequence of the response packet with respect to previously arrived response packets; and retransmitting the corresponding RDM packet depending on a result of determination of the sequence of the response packet with respect to the previously arrived response packets.