Abstract: A personal telephone adapter is disclosed which may be connected as an extension on a telephone line and which permits a caller to reach any of several extension telephones within a home or office without a human operator. A ring detector detects an incoming call and begins the operation of a timer, which, after a predetermined time, establishes a connection between the caller and a tone detector in the telephone adapter. Then, the caller may provide an extension signal selecting an extension and, in response, the tone detector in the adaptor at that extension will begin an output such as a tune to a user near the adapter. The user may then pick up the receiver of a telephone instrument and talk to the caller and, for a limited time after picking up the receiver, the user or caller may dial an additional extension signal to another adapter also connected as an extension to the telephone line.

Abstract: An adaptive control system incorporating self-teaching and self-programming features senses a pair of input signals for providing an output control signal. In a medical situation, the output signal drives a medicine delivery system in response to the sensing of a precursor signal and a condition signal which represent the future and the present states of a patient's health. Memory is provided in the form of a set of integrators which accumulate quantities of data representing the joint occurrence, during a measurement interval, of the precursor and the condition signals as quantized into preset ranges of values. Generation of the output signal is based on the amount of stored data as well as on the presence of a condition signal indicating a hazardous condition. Circuitry is provided for the selective incrementing and decrementing of the contents of the integrators in a manner analogous to the encouragement and punishment in a learning process.