Abstract: A process and apparatus for connecting the color coding of one equipment to another equipment. The position of the color of character Cc of the first equipment in the interval Ci-Ci+1 of two successive colors of the second equipment and the position of the background color Cf in the interval Cj-Cj+1 are determined. As a function of these positions, the character color is taken either as Ci, or as Ci+1. The background color is taken either as Cj or Cj+1.

Abstract: A process for the base band modulation of a data signal on a magnetic support is characterized in that: (a) a bit value of 0 is marked if it follows an unmarked bit of value of 0 or a sequence of three consecutive unmarked bits of value 1; (b) a bit value 1 as marked if it follows a bit value 0 or a sequence of three consecutive unmarked bits of value 1, except if these rules (a) and (b) lead to marking the first bit of a sequence formed from three bits of value 1 followed by a bit of value 0. The minimum interfront in the modulated signal is equal to 1.5 T and the maximum interfront is equal to 4 T.

Abstract: An analog or digital signal mixed with packet-mode digital channels can be the video signal from a television station link in which the digital channels transmit magazines. The packets are inserted at least in the active parts of free lines of the field synchronization signal, to the extent of one packet per line. The measuring equipment comprises for a selected digital channel, means (2) for detecting the address of the digital channel in the packets of the signals (SV) and means for counting (3) and displaying (5) parameters such as the number of packets received, the number of received erroneous packets, the number of not received lost packets, the number of received data words and the number of received erroneous data words during a predetermined cyclic period. Several digital channels mixed in analog or digital signals (CT) can be processed by the equipment.