Abstract: In an operational mode in which the tape should come to a stop at predetermined positions, a braking process, which causes the stopping of a tape at an exact predetermined place, is provided. At the beginning of the braking process, a target waveform is determined in dependence on the tape speed, and the values of the speed are controlled or regulated in accordance with the waveform. Control of a slow motion mode of a video tape can also be provided.

Abstract: Known LCD projectors, used for example in TV sets, can only be manually adjusted for the compensation of the changing color spectrum of the lamp due to its aging process. An LCD projector according to the invention further comprises an image sensor to measure the light intensity of the lamp. In a color adjusting circuit the image color is compensated as a function of the measured signal by controlling the LCD valve.

Abstract: A video display with data bus control has a standby and an operate condition. The video display comprises a microprocessor having a bi-directional data bus and is selectably operable in one of the operate and standby modes. A power supply is controllably coupled to the microprocessor for supplying power in one of the operate and the standby modes. An integrated circuit is coupled to the power supply and has bi-directional data bus control capability. A coupling device is responsive to the power supply and couples the bi-directional data bus to the integrated circuit in response to the operate mode and isolates the bi-directional data bus in response to the standby mode.

Abstract: The present invention relates to a device for displaying a sequence of 3D images on the basis of a first sequence of source images corresponding to the left eye and of a second sequence of source images corresponding to the right eye of an observer, said source images being conveyed respectively by a video signal S.sub.1 and by a video signal S.sub.2 of respective luminous intensities E.sub.1 and E.sub.2. The device includes a first means of calculation (6) intended to generate from said video signals S.sub.1 and S.sub.2 a luminous signal S having an overall luminous intensity E calculated as a function of the luminous intensities E.sub.1 and E.sub.2, said means of calculation (6) co-operating with a second means of calculation (8) in such a way as to split, for each pixel, the overall luminous energy E in proportion to the luminous intensities E.sub.1 and E.sub.2.

Abstract: The switched-mode power supply comprises a secondary winding and four diodes for producing two rectified voltages of the same polarity, one of which can be regulated. A connection of the unregulated voltage has connected to it a variable Zener diode as an error amplifier for transmitting a regulating signal to the primary side. The driver stage provides a pulse-width-modulated square-wave signal for driving the switching transistor which is arranged at a high potential between the operating voltage on the input side and a first connection of the primary winding. The second connection of the primary winding is connected with a Zener diode and provides a stabilized voltage for the driver stage. Arranged between the driver stage and the control electrode of the switching transistor there is a differentiating element which produces positive and negative switching voltages for controlling the switching transistor.