By FCC regulations, all stations must identify visually and or aurally once every hour. The ID must contain the station s call sign or letters and city of license. All IDs must be logged in the official operating log. A low-cost digital interface originated by Apple Computer as a desktop LAN and developed by the IEEE P1394 working group. Serial Bus Management provides overall configuration control of the serial bus in the form of optimizing arbitration timing, guarantee of adequate electrical power for all devices on the bus, assignment of which IEEE P1394 device is the cycle master, assignment of isochronous channel ID, and notification of errors.
Asynchronous transport is the traditional computer memory-mapped, load and store interface.
Data requests are sent to a specific address and an acknowledgment is returned. In addition to an architecture that scales with silicon technology, IEEE P1394 features a unique isochronous data channel interface. Isochronous data channels provide guaranteed data transport at a pre-determined rate. I mage Intensifier A device used in law enforcement, surveillance, and security applications that can amplify the image output signal of an imager, producing a usable picture in extremely low-light situations. Image Map Image Maps are user-defined areas of an image, also known as hot spots, which move a user from an image to an associated URL or page within a URL when clicked.