Abstract: An apparatus for the display and storage of television picture information by using a dynamic random access memory accessible from a computer. The apparatus includes an interface providing connection to the computer, an address modifying circuit, an address switching unit including a first input group connected to predetermined address lines of the address bus of the address generator and a second group connected to predetermined address lines of the interface, and a parallel to series converter. The inputs of the address modifying circuit being coupled to the output of the address switching unit to provide modified addresses for the memory when any of the input groups addresses the memory. The control inputs of the address switching unit and of the data switching unit are connected to a horizontal address line of the address bus associated with a horizontal address bit (X.sub.3) of low significance.

Abstract: A system for the condensation of a binary signal sequence and for the reproduction of the condensed signal sequence, in which the same encoding means is used both for the condensation and for the reproduction. In the reproduction mode of operation inverters are connected in series with the input and the output of the encoding means. The two inverters together with the encoding means act as a decoder because such a transformation function is selected for the encoding means at which the inverse transformation function is just the complementary function thereof.

Abstract: A system for the condensation of a binary signal sequence and for the reproduction of the condensed signal sequence, in which the same encoding means is used both for the condensation and for the reproduction. In the reproduction mode of operation inverters are connected in series with the input and the output of the encoding means. The two inverters together with the encoding means act as a decoder because such a transformation function is selected for the encoding means at which the inverse transformation function is just the complementary function thereof.