System for phase division multiplex duplex communication over a

System for producing a correction signal for the aperture correc

System for producing electric field with predetermined character

System for public opinion research

System for pulse data transmission through water-return cables

System for reducing the transmission time of similar portions of

System for regenerating a data from a burst signal which is rece

System for scanning information recorded on a plurality of magaz

System for sensing spatial coordinates

System for simultaneous transmission of several pulse trains

System for switching and safeguarding data in time-division mult

System for synchronizing local pseudo-noise sequence to a receiv

System for the formulation and transmission of coordinate inform

System for the transmission of split-phase Manchester coded biva

System for transmitting asynchronous bit transitions of data sig

System for use in television receivers for providing improved sh

Systems and processing algorithms for ultrasound...

Systems for eliminating high-frequency disturbances in televisio

Systems for imaging written information