Patent
Color camera system having complete spectral characteristics
TLDR
In this article, a camera spectral sensitivity characteristic having both the positive and negative lobes is combined to form a single striped optical spatial filter at the camera, and the resultant composite video signal is demodulated to yield a chrominance output signal proportional to the difference between the light transmission provided by the filter stripes so that the prescribed spectral sensitivity characteristics is produced for each output channel.Abstract:
Improved color reproduction is made possible by a television camera exhibiting a complete predetermined camera spectral sensitivity characteristic having both the positive and negative lobes. Materials having transmission characteristics which are responsive to both the positive and inverted negative lobes of the predetermined characteristics are combined to form a single striped optical spatial filter at the camera, and the resultant composite video signal is demodulated to yield a chrominance output signal proportional to the difference between the light transmission provided by the filter stripes so that the prescribed spectral sensitivity characteristic is produced for each output channel. The technique permits a camera to exhibit complete spectral characteristics and to generate by direct optical means any color signal, including I or Q, and it is applicable to single or multiple tube cameras using spatial modulation techniques for color discrimination.read more
Citations
More filters
Patent
Apparatus and method for accurate electronic color capture and reproduction
TL;DR: In this paper, the spectral responses of the optical section and the imaging section are selected so as to cascade together to provide all positive, symmetrical system curves modeled upon red, green and blue color matching functions representative of the human visual system.
Patent
Method and apparatus for a chopped two-chip cinematography camera
TL;DR: In this article, a method of capturing a color image includes steps of operating a first sensor of a camera to integrate a first charge over a first time interval, operating a second sensor of the camera, and scanning the first and second sensors to readout the respective charges during a third time interval.
Patent
Method and apparatus for a two-chip cinematography camera
TL;DR: In this article, the rotatable structure is defined to define a rotation plane that is oblique to both the reflected axis and the direct axis of a camera, where a camera includes a first sensor disposed to image light that propagates along a reflected axis, a second sensor disposing of image light along a direct axis, and a rotatable structural structure disposed to define the rotation plane.
Patent
Method for processing a colour signal
TL;DR: In this paper, an image is captured into a video signal comprised of individual pixels by means of an array sensor with color stripes and the system first interprets the highest frequencies of the signal as an upper sideband of the I color component in such a way that doubles the recoverable bandwidth of color detail.
References
More filters
Patent
Color television camera
TL;DR: In this article, a color television camera has a target structure which is scanned by an electron beam and on which is projected an image of an object in the field of view of the camera.
Patent
Spatial filter color encoding and image reproducing apparatus and system
TL;DR: In this paper, a filter is provided in the path of light from a scene, either live or on film, ultimately to be displayed as on a television tube, where at least four different bands of frequencies are generated when the encoded intensity pattern is scanned, as by a photocathode.
Patent
Color television camera indexing apparatus
TL;DR: In this article, a color television camera utilizing a vidicon tube that has a filter in the form of alternate stripes for the primary colors red, green and blue, a pair of electrodes for each set of three stripes and a photoconductive layer, an alternating voltage is applied to the electrodes to provide a predetermined pattern on the surface of the photoconductively layer in form of an index signal which is overlapped on the image to be reproduced.
Patent
Colored light encoding filter
TL;DR: In this paper, a color filter grating structure is used to project light from a subject onto a photo-sensitive surface of a color television camera tube, and a luminance signal is derived from the camera tube through a low pass filter and is matrixed with the red and blue light-representative signals to produce luminance and color difference signals.