摘要:
concentrating color television camera employing at least two camera tubes one of which provides a luminance signal, and the other of which provides chrominance signals. A light-beam splitter directs a portion of the light from the image to the photosensitive layer of the luminance camera tube in which a potential image corresponding to the visible image is formed and another portion to the chrominance camera tube for producing chrominance signals. Between the light-beam splitter and chrominance camera tube, a member capable of concentrating the light on a given number of areas evenly distributed throughout the surface of the photosensitive layer is provided. Scanning of the photosensitive layer by an electron beam thus supplies a chrominance signal which transmits the moving parts of the scene substantially without inertia.
摘要:
A color television camera arrangement for low light levels comprising a monochrome light intensifier. A rotatable color filter having circular segments of different light transmission characteristics is provided before the light intensifier. Rotatable apertured discs which intermittently and alternately pass the light to camera tubes follow the light intensifier. Protruding parts or apertures of a disc correspond to determined segments of the color filter. Instead of the apertured discs liquid crystals which pass or do not pass light can be used.
摘要:
A light from the picked up object is divided into two portions by a first optical system. A luminance signal is produced from one of the divided portions and a chromaticity signal is obtained from the other divided portion by a second optical system. This second optical system is intended to picks up first and second color lights and is arranged such that the first color light is left intact and the second color light is intercepted in the form of stripes. The chromaticity and luminance signal are than combined to produce a three color signal.
摘要:
A colour television camera including first and second pick-up tubes is disclosed, which camera includes automatic means for ensuring registration of the video signals derived from said tubes. The video signals derived from said tubes and relating respectively to different spectral components of a scene to be televised are passed through respective outline generator means to produce respective identification signals which are indicative of selected edges in the scene. The identification signals are applied to an error detecting circuit which is arranged to generate a correction signal dependent on the degree of misregistration between the video signals, and the correction signals are utilised, either directly or indirectly, to tend to reduce the misregistration.
摘要:
Predominantly positive and negative polarity waves formed from edge video signals, representing sharp transitions between light and dark areas of a subject and derived from two of a plurality of pickup tubes respectively responsive to different component colors of the subject, are peak detected to produce a signal having such polarity and amplitude as to so control the beam deflection in one of the tubes that the edge video signals are made to coincide in time.
摘要:
A camera circuit features at least two camera tubes, one of which has a larger effective target plate capacitance, hence produces a higher resolution signal, than the other tube. The high-resolution signal is applied to an aperture correction circuit and then to the low-resolution signal to correct for the ''''comet tail'''' effect. To obtain the high-target plate capacitance effect, the target plate can be made larger, or the lower resolution tubes can have bundles of optical fibers in front of them.
摘要:
This disclosure depicts improved color television film reproduction systems and methods for displaying either conventional color transparency cine film, or cine records on which color separation information is stored as signals modulating separately detectable spatial carriers. The illustrated system comprises, inter alia, novel light source means for producing a plurality of highly spatially coherent light sources and a source of less coherence, and means employing the source of less coherence for establishing a wideband luminance channel through the system. The disclosed system further includes novel spatial filtering means and methods for enabling detection of red, blue, green, and luminance information without the need for spectral filtering in either the projector or camera stages.
摘要:
The different color responsiveness of the image tubes of a color television camera to different color components is compensated by different lenses projecting color images having different sizes onto the photosensitive layers of the image tubes, respectively.