부산대학교 도서관

An apparatus and method for recovering "break" codes transmitted by a keyboard that are not properly received by the receiver of the computer system. The keyboard is an infrared keyboard that transmits to a receiver in the computer system "make" codes when the keys are depressed and transmits to the receiver "break" codes when the keys are released. Upon receipt of the "make" and "break" codes, the receiver keeps track of the status of each of the keys, i.e., depressed or released, by updating a database in response to receipt of the "make" and "break" codes. At select time intervals, the keyboard transmits to the receiver an "idle" code containing data corresponding to the status of each key. Upon receipt of the "idle" code, the receiver compares the "idle" code with the status of each key as indicated by the data base. The receiver then generates a "break" code for each of the keys that do not compare.