PTP-IP (Picture Transfer Protocol over Internet Protocol): A commonly used name for the CIPA DC-005-2005 image transfer protocol for transmitting images over LANs. It represents an extension to the Picture Transfer Protocol (PTP) used to transfer images between cameras and computers connected via USB cable. The WT-4 uses PTP-IP to communicate with host computers. Shared key: An authentication system in which WEP keys are used to establish whether a client has access to the network. Communication is restricted to devices with the same WEP key.
SS-ID (Service Set ID): An SS-ID prevents interference between devices in
different networks by allowing communication only between devices that share an SS-ID. See BSS-ID, ESS-ID.
Sub-net mask: A mask that divides a network into sub-nets.
TCP/IP (Transmission Control Protocol/Internet Protocol): A dual protocol consisting of a transport-layer protocol (TCP) that divides data into packets which it later reassembles, and a network protocol (IP) that handles transmission of the packets between points in the network. It can be implemented on different platforms, allowing data to be transmitted between machines with different operating systems.
TKIP (Temporal Key Integrity Protocol): An encryption standard using dynamic WPA-PSK keys that change periodically or after a specified amount of data have been transmitted, making it more secure that WEP, which uses fixed keys.
UDP (User Datagram Protocol): A fast but unreliable transport layer transmission protocol using the OSI model.
USB (Universal Serial Bus): A standard for connecting peripheral devices. USB supports data transfer rates of up to 480 Mbps (USB 2.0). Devices connected via USB can be connected and disconnected with the power on (“hot plug”) and do not require separate IRQ (interrupt request) numbers, preventing conflicts with other devices.
WAN (Wide Area Network): A network connecting computers or LANs in widely separated locations. The Internet is an example of a WAN.
WEP (Wired Equivalent Privacy): A type of encryption in which the data transmitted between devices is encoded using a shared encryption key (WEP key).
Wireless LAN access point: A wireless transceiver that acts as the connection between wireless devices and a wireless network.
WPA-PSK (WiFi Protected Access with Pre-Shared Key): A type of authentication for wireless networks using previously-established(pre-shared) TKIP or AES keys. Wireless devices using this form of authentication can only communicate with devices with the same pre-shared key.
