HRM 3450 Lecture Notes - Lecture 24: Proprietary Protocol, Divx, Error Detection And Correction
5 May 2018
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HRM 3450 Lecture 24 Notes – Nonstandard Protocol
Introduction
• A nonstandard protocol or data format is limited in use to its supporters and may or
may not become a standard, depending on its general acceptance.
• For example, DVD videos encoded in the proprietary DivX format will play on some DVD
players, but not on others.
• Protocols define the specific agreed-upon sets of ground rules that make it possible for a
communication to take place.
• Except for special applications, most computers perform their operations such that each
hardware or software computer unit will understand what other computer units that
they are connected with are saying.
• Protocols exist for communications between computers, for the communications
between various I/O devices and a computer, and for communications between many
software programs.
• A protocol specification defines such communication features as data representation,
signaling characteristics, message format, meanings of messages, identification and
authentication, and error detection.
• Protocols in a client-server system assure that requests are understood and fulfilled and
that responses are interpreted correctly.
• Since the use of a proprietary protocol would be limited to those with permission to use
it, protocols are almost always eventually standardized.
• Although not always the case, protocols that are not standardized tend to die out from
lack of use.
• In fact, international standards are often created to ensure that the protocols are
universally compatible.
• As an example, HTTP, HyperText Transfer Protocol, guides communication between
Web servers and Web browsers on the Internet.
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