Graphics Programming Interface
An acronym for General Purpose Interface, referring to an interface allowing one machine to trigger events on another, such as an edit controller triggering a video dissolve or an audio cross-fade. GPI's can be wired through an audio patchbay giving the operator easy access to the GPI ports of various machines.
General Purpose Interface. A method for communicating with electronic systems by utilizing relay or electronic contact closure inputs and outputs. This term may also be an acronym for General Purpose Input, which is the contact closure input of a General Purpose Interface