Abstract: A calculation circuit for the division of a fixed-point input signal comprising a sequence of digital data values having a width of n bits by an adjustable division factor 2a for the purpose of generating a divided fixed-point output signal, having a signal input (2) for applying the data value sequence of the fixed-point input signal, a first addition circuit (6), which adds the digital data value present at the signal input (2) to a data value buffer—stored in a register (33) to form a digital first summation data value having a width of max (n, a+1) +1 bits, a shift circuit (11) which shifts the first summation data value present by a data bits toward the right, with the result that the max (n, a+1)−a+1 more significant data bits of the first summation data value are output at an output of the shift circuit (11), a logic circuit (16), which, as a function of the sign of the first summation data value, logically ANDs the a less significant data bits of the first summation dat

Abstract: Digital modem for data exchange between a data distribution unit (2) and at least one receiver (3, 4) which can be connected to the digital modem (1) with: a user-data forward signal path (17) for the transmission of user data from the television-data distribution unit (2) to the receiver (3, 4) over broadband user-data forward transmission channels,