Abstract: A power bus digital communication system reduces power and signal cabling in a space satellite by transformer coupling digital signal sources to power bus circuits, the transformer coupling devices in all power bus circuits being in parallel relation and electrically isolated from a power supply whereby the digital communication sources may communicate among themselves at a DC power level using a square wave modulated according to a Manchester code.

Abstract: A distributed data processing system is disclosed which has truly distributed control. A plurality of bus interface units (BIU) are interconnected by the distributed system data bus (DSDB) which includes a clock line, a serial command line (CMD), a serial bus allocation line (BAL) and a two byte wide data bus. A central clock connected to the clock line which defines the message frame timing, is the only centralized "control" element in the system. Each BIU may in turn be connected to either one or several data processing units, an I/O port, or a bridge connecting to still another similar bus network.

Abstract: A signal analyzer system is disclosed which includes an arithmetic processor containing a plurality of pipeline processor elements in parallel array with each element connected to a respective working store, with all of the elements being under microprogram control of an arithmetic element controller.A storage controller included in the system is connected to the arithmetic processor, to a system input and to a system ouput.A bulk storage included in the system is connected to the storage controller. The storage controller controls data transfers into and out of the system and between the bulk storage and arithmetic processor.A control processor included in the system is connected to the arithmetic processor and the storage controller by means of a data bus for centrally controlling the operation of the plurality of pipeline processor elements by transmitting micro control words over the bus.