Abstract: A video apparatus has a video source with a luminance output carrying a first luminance signal and a chrominance output carrying a chrominance signal, an OSD circuit generating OSD signals and a fast-blanking signal, and a connector for delivering video signals. A converter outputs a second luminance signal based on the OSD signals and a first switch is controlled by the fast-blanking signal selectively connects the converter or the luminance output to the connector and a second is switch is controlled by the fast-blanking signal selectively connects the chrominance output or a circuit generating a constant chrominance signal to the connector.

Abstract: The circuit arrangement comprises a power supply unit with a first power supply only for the analogue signal processing part and for the control part of a respective device. For the digital signal processing part, a second, separate switched mode power supply is provided, which is switched off, when only the analogue signal processing part is active, and which is in operation, when the digital signal processing part is on. For switching on and off of the second switched mode power supply, the power supply comprises a switching circuit (18), which is coupled in a special embodiment to a control loop (15) on the secondary side, for switching off the second power supply at the primary side via a galvanic isolating means (14). The switching circuit is provided with a supply voltage (12VS) from the first power supply and receives the on/off command from the control part, e. g. a microprocessor.

Abstract: A method of selecting optical materials for an optical system having a first lens system and a second lens system to provide correction of chromatic aberration in multiple wavelength bands comprises representing a first expression related to chromatic aberration of the optical system in a first wavelength band as a function of Abbe numbers of the first and second optical materials in first and third wavelength bands, representing a second expression related to chromatic aberration of the optical system in the second wavelength band as a function of Abbe numbers of the first and second optical materials in the second and third wavelength bands, comparing pairs of values calculated from the first and second expressions for potential combinations of first and second optical materials, and making a choice for the first and second optical materials based upon the comparison.

Abstract: In order to avoid, during trick mode, jittering of a second image superimposed on a first image, the arrangement is able to provide a signal including a vertical synchronisation signal and representative of a first image to a screen. The arrangement also generates a second image to be synchronised with the first image. The arrangement is able to perform a pseudo-vertical synchronisation signal. A selection is made to use whether the vertical synchronisation signal or the pseudo vertical synchronisation signal depending on the mode in which the arrangement is functionning.

Abstract: A video apparatus has a first connector (28) for outputting first RGB signals (R42, G42, B42), a second connector (38) for receiving second RGB signals (R2, G2, B2), and an On-Screen Display circuit (26) generating third RGB signals (ROSD, GOSD, BOSD). A RGB generator (46) generates fourth RGB signals (R46, G46, B46). A first RGB switch (40) is connected to the second connector (38) and to the On-Screen Display circuit (26) for receiving respectively said second RGB signals (R2, G2, B2) and said third RGB signals (ROSD, GOSD, BOSD). The first RGB switch (40) outputs fifth RGB signals (R40, G40, B40). A second RGB switch (42) is connected to the first RGB switch (40) and to the RGB generator (46) for receiving respectively said fifth RGB signals (R40, G40, B40) and said fourth RGB signals (R46, G46, B46). The second RGB switch (42) outputs the first RGB signals (R42, G42, B42). A process to control such a video apparatus is also proposed.

Abstract: A video apparatus, for instance a video player, comprises a first digital source (e.g. a media player) of a first video digital stream and a video encoder (for generating analogue video signals based on said first video digital stream. The video apparatus also has an input for receiving first analogue video signals comprising synchronization signals.

Abstract: A video apparatus comprises a correction circuit for delaying a luminance stream in a digital stream. The correction circuit has a demultiplexer, a line buffer and a multiplexer to achieve this. This construction allows to compensate for the luminance 2H-delay of conventional VHS and S-VHS signals.

Abstract: A video apparatus has a video source with a luminance output carrying a first luminance signal and a chrominance output carrying a chrominance signal, an OSD circuit generating OSD signals and a fast-blanking signal, and a connector for delivering video signals.

Abstract: A video apparatus has a first circuit (for instance an analog recording and reproducing unit) generating a first baseband analog video signal on a first output.

Abstract: A digital video recorder has an analog source and at least a digital source. The analog source is encoded by an encoder. A multiplexer is connected to both the encoder and the digital source. The multiplexer is also connected to a medium interface for recording and reading on a medium and to a digital decoder linked to a display.

Abstract: A VCR is connectable to a television receiver and a decoder of scrambled signal. The VCR provides connection paths for coupling a video signal and an audio signal between the television receiver and the decoder. The VCR receives a control signal from the decoder indicating whether the video signal received by the television receiver is scrambled. In a first stand-by mode of the VCR, if the video signal is not scrambled, only the video signal is routed to the decoder through the VCR. If a scrambled signal is received, then the audio signal is also routed to the decoder through the VCR.