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VISCA is a professional camera control protocol used with PTZ cameras. It was designed by Sony to be used on several of its surveillance and OEM block cameras. == Implementation == It is based on RS232 Serial communications at 9600 bit/s, 8N1, no flow control typically though a DE-9 connector, but can also be on 8-Pin DIN, RJ45 and RJ11 connectors use in daisy chain configurations. VISCA utilizes a serial repeater network configuration to communicate between the PC (device #0) and up to 7 peripherals (#1 through #7). The daisy chain cable configuration means that a message walks the chain until it reaches the target device identified in the data packet. Responses then walk the rest of the way down the chain and back up again to reach the system. Some packets may be broadcast to all devices. A command data packet consists: * Address byte (1) message header * Information bytes (1..14) * Terminating byte (1) 0xFF The message header is of the format:
Each command data packet has a corresponding response data packet. The response to a particular packet is variable in size and may indicate an error condition. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「VISCA Protocol」の詳細全文を読む スポンサード リンク
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