handshaking


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Related to handshaking: Handshaking Lemma

handshaking

[′hand‚shak·iŋ]
(communications)
The establishment of synchronization between sending and receiving equipment by means of exchange of specific character configurations.

handshaking

(1)
Predetermined hardware or software activity designed to establish or maintain two machines or programs in synchronisation. Handshaking often concerns the exchange of messages or packets of data between two systems with limited buffers. A simple handshaking protocol might only involve the receiver sending a message meaning "I received your last message and I am ready for you to send me another one." A more complex handshaking protocol might allow the sender to ask the receiver if he is ready to receive or for the receiver to reply with a negative acknowledgement meaning "I did not receive your last message correctly, please resend it" (e.g. if the data was corrupted en route).

Hardware handshaking uses voltage levels or pulses on wires to carry the handshaking signals whereas software handshaking uses data units (e.g. ASCII characters) carried by some underlying communication medium.

Flow control in bit-serial data transmission such as EIA-232 may use either hardware or software handshaking.

handshaking

(2)
The method used by two modems to establish contact with each other and to agreee on baud rate, error correction and compression protocols.

handshaking

(3)
The exchange of predetermined signals between agents connected by a communications channel to assure each that it is connected to the other (and not to an imposter). This may also include the use of passwords and codes by an operator.

handshaking

Signals transmitted back and forth over a communications network in order to establish a valid connection between two stations. A "hardware handshake" uses dedicated wires such as the request-to-send (RTS) and clear-to-send (CTS) lines in an RS-232 serial transmission. A "software handshake" sends codes such as "synchronize" (SYN) and "acknowledge" (ACK) in a TCP/IP transmission. See RTS, CTS and RS-232.
References in periodicals archive ?
The trace from a SATA system in Figure 2 shows how the handshaking in the return direction is interlocked with the frame being transmitted.
After you have selected the other parameters, you must establish the appropirate handshaking.
In some cases, the handshaking can be supported with traditional pattern generators containing functions such as conditional branching or match mode.
Even so, those familiar with 8b/10b encoding still face a learning curve with SATA due to the new technologies it introduces such as Common Mode signaling, Out-Of-Band (OOB) handshaking, Spread-Spectrum Clocking, and Data Scrambling.
It supports all VGA signal pins except control and handshaking, and integrates with existing structured cabling systems.
92 embedded modem chipset that will offer more symmetric data transmission speeds with higher upload bandwidth, faster handshaking time to achieve modem connection and a modem on hold feature that allows the modem connection to be sustained when a phone call occurs on the same line.
Clinton's lawyer, Robert Bennett, objected, arguing that the definition was too broad and could include such benign activities as handshaking.
The high-performance chip features Philips' unique ultra low power handshaking technology, enabling an exceptional operating range by fully meeting the ISO/IEC14443 standard power range requirements.
Contract notice: Provision of microscopy system used for microscopic objects of investigation of the following methods: fluorescence and transmitted light microscopy, electrophysiology, handshaking cell mechanics, etc.
Proprietary radio protocols include a broad security code range, data encryption, handshaking and error checking that all provide a secure and robust wireless interface system.
Prince Andrew, the Falklands War veteran, has established a publicly funded career where he manages to squeeze in a bit of royal handshaking around his golf.
The three 8-b digital I/O ports can be configured as inputs or outputs, and each port supports hardware handshaking, strobe I/O, and bidirectional protocols.