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Machine translation
1. (WO1981003234) APPARATUS FOR THE DISPLAY AND STORAGE OF TELEVISION PICTURE INFORMATION BY USING A MEMORY ACCESSIBLE FROM A COMPUTER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1981/003234    International Application No.:    PCT/HU1981/000022
Publication Date: 12.11.1981 International Filing Date: 07.05.1981
IPC:
G09G 1/02 (2006.01), G09G 1/16 (2006.01)
Applicants:
Inventors:
Priority Data:
1110/80 07.05.1980 HU
Title (EN) APPARATUS FOR THE DISPLAY AND STORAGE OF TELEVISION PICTURE INFORMATION BY USING A MEMORY ACCESSIBLE FROM A COMPUTER
(FR) APPAREIL D"AFFICHAGE ET DE STOCKAGE D"INFORMATIONS D"IMAGES DE TELEVISION EN UTILISANT UNE MEMOIRE ACCESSIBLE PAR UN ORDINATEUR
Abstract: front page image
(EN)An apparatus for the display and storage of television picture information by using a memory accessible from a computer in which the memory comprises dynamic RAM memory elements arranged in memory blocks being accessed in repetitive cycles. The address inputs of the memory elements are controlled by an address generator through an address modifying circuit and an address switching unit. The address modifying circuit modifies the picture addresses provided by the address generator corresponding to the internal address requirements of the memory blocks. The address switching unit is connected both to predetermined address lines of the address generator and to address lines of an interface providing connection towards the computer. The data bus of the memory is coupled to a data switching unit having outputs coupled to a parallel to series converter and to the multiplexer of the interface. The control of the data and address switching units is carried out by the least significant horizontal address bits. Owing to the specific kind of control a part of the memory blocks is always connected to the computer and an other part to the display unit, and these connections are cyclically interchanged. This control provides for the continuous refreshment of the dynamic RAM memories, and the apparatus will be in a quasi-continuous connection both with the display and the computer.
(FR)Appareil d"affichage et de stockage d"informations d"images de television en utilisant une memoire accessible par un ordinateur, ou la memoire comprend des elements de memoire RAM dynamique disposes dans des blocs de memoire dont l"acces se fait suivant des cycles repetes. Les entrees d"adresses des elements de memoire sont commandees par un generateur d"adresses par l"intermediaire d"un circuit de modification d"adresses et d"une unite de commutation d"adresses. Le circuit de modification d"adresses modifie les adresses d"images fournies par le generateur d"adresses correspondant aux besoins d"adresses internes des blocs de memoire. L"unite de commutation d"adresses est connectee a la fois a des lignes d"adresses predeterminees du generateur d"adresses et a des lignes d"adresses d"une interface assurant la connexion a l"ordinateur. Le bus de donnees de la memoire est couple a une unite de commutation de donnees ayant des sorties couplees a un convertisseur parallele/serie et au multiplexeur de l"interface. La commande des unites de commutation de donnees et d"adresses est effectuee par les bits d"adresses horizontaux de poids faible. Grace au type specifique de commande, une partie des blocs de memoire est toujours connectee a l"ordinateur et une autre partie a l"unite d"affichage, et ces connexions sont interchangees de maniere cyclique. Cette commande assure la regeneration continue des memoires RAM dynamiques et l"appareil se trouve en connexion quasi continue a la fois avec l"affichage et l"ordinateur.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)