Abstract: A digital video signal encoding arrangement comprising a correlation reducing circuit receiving said digital signals which are representative of the luminance or the chrominance of a certain number of elements of a picture which has been divided into blocks, a scanning conversion circuit (30), a normalization circuit (50), a quantizing circuit (60), a circuit (70) for encoding said quantized values and a rate controlling circuit (80). This arrangement is characterized in that its normalization circuit itself comprises: (a) a weighting coefficient storage memory (51) which is addressed on the one hand by an index i indicating the position in the current block, and on the other hand by a value representative of the activity of this block; (b) a standard calculating circuit (52) on the basis of a mean standard value produced by the rate controlling circuit and also on the weighting coefficient supplied; (c) a circuit (59) for dividing by the coefficient K.sub.i the output of said standard calculating circuit.

Abstract: A whole body swingable clock which includes a clock body swingingly supported on the pendulum fulcrum, an additional pendulum contained in the clock body to swing the clock body by means of movement of gravity center position, said clock body containing a clock drive mechanism having a clock drive gear train to indicate a certain time and an additional pendulum drive mechanism having an additional pendulum drive gear train to drive the additional pendulum, the additional pendulum drive gear train prepared with an escape wheel, a pallet fork which engages with the escape wheel to swing and is connected to the additional pendulum and a urging means which provides the predetermined rotating force to the escape wheel so that the rotation of the escape wheel enables the engaging conditions between the escape wheel and the pallet fork to be changed to swing the pallet fork and the additional pendulum connected thereto and further the whole clock body, wherein the clock drive gear train and the additional pendulum d