DEVICE FOR VIDEORECORDERS Russian patent published in 1995 - IPC

FIELD: magnetic recording-reproduction of information. SUBSTANCE: device for videorecorders has two two-gap units of magnetic heads diametrically located on rotary drum, three pairs of amplifiers intercoupled over output and controlled with proper commutators, three keys, two reproduction channels of first and second formats of videorecording interconnected over output through one of keys. Each channel is manufactured in the form of two circuits of reproduction of signals of brightness and color connected through adder. First pair of amplifiers is linked to common input of channel of first format, mobile contacts of two other keys are electromagnetically coupled to windings of two heads arranged complanarly. Their stationary contacts are connected to first and second amplifiers of first and second pairs. Windings of two other complanarly arranged heads are coupled to inputs of amplifiers of third pair. EFFECT: enhanced reliability of device. 6 cl, 5 dwg, 1 tbl