Abstract: This is a spread spectrum radio frequency (RF) communication system whose rpose is to "spread" the information bandwidth such that when it is de-spread any atmospheric interference (including jamming is spread rather than de-spread. A "low probability of exploitation" is obtained through the use of multiple modulations each of which creates a distinct spread spectrum symbol at the transmitter, and the reception of which requires a "match" condition at the receiver to determine the data bit state. The symbol sequence is known by the appropriate receivers and the collection of data bits forms a message.

Abstract: A color cathode ray tube display apparatus particularly for use under a wide range of ambient light conditions, such as in an aircraft cockpit, wherein each of the primary color phosphors has a unique brightness versus cathode drive characteristic, which characteristic also is dependent upon whether the displayed information is raster written or stroke written and wherein such characteristics also may vary from tube to tube. The output of at least one cockpit ambient light sensor in addition to a pilot selected brightness is used on a continuous basis to calculate a reference brightness level for the sensed ambient brightness conditions and display writing mode, this reference brightness level being used to calculate the corresponding brightness level for each of the primary color components of the commanded symbology color and concomitant drive voltages to the CRT's cathode or cathodes.

Abstract: A banking system, equipment and operations are provided which dispense cash at an unmanned station from a money vault unit at a remote station to a customer who verifies his identity at the unmanned station. The system and equipment also may accept deposits from the customer at the unmanned station and convey the deposits to a depository unit at the remote station. The unmanned station may be combined in a blank drive-up or walk-up service unit served by a teller located at either the unmanned or the remote station during business hours. The automatic equipment at the unmanned station and the money vault and depository units at the remote station provide maximum security for money or articles handled. Along with this security feature, the automatic equipment does not require the presence of a teller to provide banking services for customers during non-business hours.