Showing papers on "Channel (digital image) published in 1969"

Color phaser for television video signals

Abstract: Color video signals are applied to a delaying channel, the output of which is maintained in phase with a reference color signal by means which compares the phase of the color burst of the delayed signal with the phase of the color burst of the reference signal and changes the amount of delay of the delaying channel until there is substantially no color phase error between the compared signals.

The Application of High-Gain Image Intensification and Closed-circuit Television to Field-ion Microscopy

Abstract: Publisher Summary This chapter discusses the application of high-gain image intensification and closed-circuit television to field-ion microscopy. The basic field-ion microscope suffers from the disadvantage of low-light output as a result of the poor efficiencies of the phosphor under bombardment by the positive ions producing the image. The television read-out offers the possibility of the direct scanning of spot intensities as an aid to image interpretation by providing information on the positions of atoms relative to the Moore hemisphere and hence to each other, and also on the possible effect on spot intensities as a result of the presence of adjacent un-imaged adsorbate. The use of image superposition would show where, and in what sequence, the events occurred. This could be done in black and white or preferably in color by using a color TV monitor and one color channel, say red, could be used to display the undamaged surface via a memory circuit or second TV channel, whilst the image of the changing surface could be displayed on a second color channel, say green. This would give a similar effect to the single-frame color-superposition process already in use in this laboratory, and in others, for detecting small differences between two otherwise identical micrographs.