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In a message signal scrambling apparatus, the signal is divided into elements, each of one time slot duration, and the elements are re-arranged in order so as to produce a signal scrambled in time. Each element is entered and stored in a charge coupled device, from which is extracted as required to

In a message signal scrambling apparatus, the signal is divided into elements, each of one time slot duration, and the elements are re-arranged in order so as to produce a signal scrambled in time. Each element is entered and stored in a charge coupled device, from which is extracted as required to form part of a re-arranged order of elements.

대표청구항 ▼

A message signal scrambling apparatus including a plurality of charge coupled devices connected in parallel each for storing a signal of at least one time slot duration, input and output terminal means for applying signals to and taking signals from the parallel combination respectively, and control

A message signal scrambling apparatus including a plurality of charge coupled devices connected in parallel each for storing a signal of at least one time slot duration, input and output terminal means for applying signals to and taking signals from the parallel combination respectively, and control means arranged to clock signals, applied in operation to the input terminal means, into and out of each one of the charge coupled devices in a predetermined coded manner so that the applied signal is scrambled in time, the charge coupled devices having storage capacities in excess of one time slot so that in operation the control means is arranged to clock information into and out of the devices at one predetermined rate and to clock the information stored in the devices along said devices at a different, slower, predetermined rate.