Abstract:
A graphic data display system for effecting controlled traces on the screen of a cathode ray tube in which data display is inhibited for various delay times in response to detection of changes in selected portions of the binary data signals indicating a change in the required trace including a memory for storing the binary signals and comparators for comparing the corresponding inputs and outputs of greatest weight of said memory to detect said changes.
Abstract:
The oscilloscope has a character generator for providing any of the memorised set of characters, each comprising a number of segments, each segment being the same number of units in height and length relative to the X and Y axes, and the characters spaced by a constant number of units along one axis. The characters are defined by words of n bits accompanied by a word characterising the character trace, by a selection bit for selecting either X or Y axis, by a polarity bit for selecting the sense of displacement of the selected axis and by a word defining the number of units for which the selected axis is to be displaced. Pref. two registers are used for controlling the horizontal and vertical deflection respectively.
Abstract:
DESCRIPTIF L'invention est du domaine des images synthétiques sur un écran cathodique, et concerne une mémoire numérique dont le contenu est lu cycliquement pour constituer une image sur l'écran, mémoire divisée en blocs qui contiennent chacun les données d'une partie de l'image et dont la commande cyclique est faite de telle façon qu'a l'intérieur d'une ligne de l'image, les blocs sont lus successivement, tandis qu'en fin d'une ligne on saute un bloc. Ainsi, les blancs sur l'image dûs à la panne d'un des blocs se repartissent sur l'image et n'effacent plus une colonne verticale de l'image.
Abstract:
The invention comes within the domain of synthetic images on a cathode screen and concerns a digital memory whose contents are cyclically read to constitute an image on the screen. The memory is divided into blocks each of which contains the data of a part of the image and which are cyclically controlled in such a way that within a line of the image, the blocks are read successively, whereas at the end of a line, a block is skipped. Thus, possible blanks in the image due to the breakdown of one of the blocks are distributed over the image and no longer erase a vertical column of the image.
Abstract:
A graphic data display system for effecting controlled traces on the screen of a cathode ray tube in which data display is inhibited for various delay times in response to detection of changes in selected portions of the binary data signals indicating a change in the required trace including a memory for storing the binary signals and comparators for comparing the corresponding inputs and outputs of greatest weight of said memory to detect said changes.
Abstract:
Animated images are viewed on screens controlled by a computer having a first image synchronisation peak generator of period T, image duration being t and transfer orders being transmitted after the image. Further image synchronisation peaks are of period T generated before the first peaks and preceding the first peaks by time theta and are sent to the computer with the aim of stopping transfer orders which are included in the interval T-t-theta. A pulse generator of period T sends pulses to a first monostable which delivers pulses of duration theta whose fronts coincide with the synchronisation pulses. This first monostable is in parallel with second and third monostables respectively delivering pulses coinciding with the front and the rear of the same pulse.
Abstract:
A graphic data display system for effecting controlled traces on the screen of a cathode ray tube in which data display is inhibited for various delay times in response to detection of changes in selected portions of the binary data signals indicating a change in the required trace including a memory for storing the binary signals and comparators for comparing the corresponding inputs and outputs of greatest weight of said memory to detect said changes.
Abstract:
The invention comes within the domain of synthetic images on a cathode screen and concerns a digital memory whose contents are cyclically read to constitute an image on the screen. The memory is divided into blocks each of which contains the data of a part of the image and which are cyclically controlled in such a way that within a line of the image, the blocks are read successively, whereas at the end of a line, a block is skipped. Thus, possible blanks in the image due to the breakdown of one of the blocks are distributed over the image and no longer erase a vertical column of the image.