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Liquid Crystal Font Addressing Method Disclosure Number: IPCOM000061309D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09

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Arismendi, A Day, MN Hanna, JT [+details]


A method is described for using the high intensity character attribute bit of Personal Computer scan codes to modify the font addressing so that 512 character fonts can be defined. The attribute byte of a given character defines whether or not it should be displayed in high intensity. A Liquid Crystal Display (LCD) does not have the capability of displaying an intensified character and opens an opportunity to map the high intensity bit into accessing an alternate font. An alternate font capability is useful in the world trade marketplace where several countries require a font character set larger than 256 characters accessed by the Personal Computer 8-bit scan code. The alternate font could also be an italicized version of the main character font.