Appeal No. 95-4183
Application 07/945,714
The invention pertains to a video image display device
as described by claim 14 reproduced as follows:
14. A video image display device comprising:
an address selector circuit responsive to a line
selection signal for determining a vertical position on a display
screen and a column selection signal for determining a horizontal
position on the display screen to produce a first address signal
and a second address signal;
a display data random access memory for storing all
character codes to be displayed and reading and outputting one of
said character codes stored in an address indicated by said first
address signal;
a single chip IC character generator comprising a read
only pattern memory for storing a plurality of character patterns
each composed of a plurality [sic, of] pattern lines each
composed of a bit pattern, and an address determination circuit
and a selector circuit operable, in response to said character
code and said second address signal, to select one of said
character patterns corresponding to said character code and
output a bit pattern signal of one of said pattern lines
corresponding to said second address signal; and
a serial converter circuit responsive to a fringe
request signal from a microcomputer to generate a bit pattern of
fringe for said bit pattern of said character pattern and output
signals of said fringe bit pattern and said bit pattern of said
character pattern dot by dot every clock having a period
corresponding to a horizontal scan period of respective display
dots on the display screen,
wherein said read only pattern memory stores all of
said pattern lines of each of said character patterns, and
selects, in response to said character code, one of said
character patterns and outputs said bit pattern of said selected
character pattern corresponding to said second address signal
when a value of said second address signal indicates any of said
pattern lines;
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Last modified: November 3, 2007