Abstract A circuit for the raster writing conversion of data to be reproduced on a video screen as symbols including symbols with downward appendages is provided. The circuit includes a symbol generator, a symbol address storage comprising an input to the symbol generator, and a raster line counter comprising another input to the symbol generator. The address storage transmits a multidigit binary signal representation of the symbol to be reproduced (e.g., ASCII code). The circuit further comprises a discriminator connected in parallel to the symbol address storage. The discriminator includes logic means for detecting a signal representative of a symbol having a downward appendage, switch means activated by the discriminator, and a recoding circuit adapted to advance the output of the raster counter. In the first position, the switch means interconnect the output of the raster counter directly to the symbol generator while in the second position, the output of the raster counter is connected to the symbol generator through the recoding circuit so that upon the detection of a symbol having a downward appendage, the raster lines are shifted downward.
Inventors
👤 Rudolf Beuter
👤 Walter Reissmann
👤 Rudolf Cesal
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-06 02:58
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/22; G09G5/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
206 words
In a circuit for the raster writing conversion of data to be reproduced on a video screen as symbols in a matrix with a gap between symbol lines, said circuit being of the type having a symbol generator, a symbol address storage comprising an input to said symbol generator, said storage transmitting a multidigit binary signal representation of the symbol to be reproduced and a raster line counter comprising another input to said symbol generator, said counter being adapted to shift ahead by one line after each raster line sweep of the video screen, the improvement comprising: a discriminator connected in parallel to said symbol address storage lines, said discriminator including logic means for detecting a multidigit binary signal from said symbol address storage representative of a symbol having a downward appendage, switch means activated by said discriminator to shift from a first position to a second position interposed between said raster counter and said symbol generator, said switch means first position interconnecting the output of said raster counter directly to said symbol generator and said second position interconnecting the output of said raster counter and said symbol generator through a recoding circuit, and a recoding circuit adapted to advance the output of said raster counter.
Claim 2
Dependent Claim
206 words
In a circuit for the raster writing conversion of data to be reproduced on a video screen as symbols in a matrix with a gap between symbol lines, said circuit being of the type having a symbol generator, a symbol address storage comprising an input to said symbol generator, said storage transmitting a multidigit binary signal representation of the symbol to be reproduced and a raster line counter comprising another input to said symbol generator, said counter being adapted to shift ahead by one line after each raster line sweep of the video screen, the improvement comprising: a discriminator connected in parallel to said symbol address storage lines, said discriminator including logic means for detecting a multidigit binary signal from said symbol address storage representative of a symbol having a downward appendage, switch means activated by said discriminator to shift from a first position to a second position interposed between said raster counter and said symbol generator, said switch means first position interconnecting the output of said raster counter directly to said symbol generator and said second position interconnecting the output of said raster counter and said symbol generator through a recoding circuit, and a recoding circuit adapted to advance the output of said raster counter.
Claim 3
Dependent Claim
18 words
The invention in accordance with claim 1 wherein said discriminator comprises only AND, NOR and OR logic components.