Method and apparatus for reducing discontinuities in an active addressing display system

An electronic device for presenting data, the electronic device comprising:

• a receiver for receiving image data;
• a display having at least first and second segments comprising, respectively, first and second pluralities of rows;
• first driving means coupled to the display for driving, during a first set of time periods, the first plurality of rows with a plurality of orthonormal functions, at least one of which has been modified to generate a first modified orthonormal function;
• second driving means coupled to the display for driving, during a second set of time periods, the second plurality of rows with the plurality of orthonormal functions, at least one of which has been modified to generate a second modified orthonormal function wherein:
• at least one display row included in the second pluralities of rows is also included in the first plurality of rows such that the at least one display row is driven during both the first and second sets of time periods;
• the at least one display row is driven with the first modified orthonormal function during the first set of time periods and with the second modified orthonormal function during the second set of time periods;
• and
• transforming circuitry for transforming a first subset of the image data utilizing the plurality of orthonormal functions to generate a first set of column voltages used to drive columns of the display during the first set of time periods, and for transforming a second subset of the image data utilizing the plurality of orthonormal functions to generate a second set of column voltages used to drive the columns of the display during the second set of time periods, wherein a portion of the image data is included in both the first and second subsets thereof such that the portion is transformed twice using the plurality of orthonormal functions.

An electronic device comprising a display for presenting data, the display having columns and having at least first and second display segments comprising, respectively, first and second pluralities of rows, the electronic device comprising:

• a receiver for receiving image data;
• storing means for storing orthonormal functions;
• dividing means coupled to the storing means for dividing in half coefficients of a first orthonormal function, thereby generating a first set of modified orthonormal functions, and for dividing in half coefficients of a second orthonormal function, thereby generating a second set of modified orthonormal functions;
• row voltage generating means coupled to the dividing means for generating from the first set of modified orthonormal functions a first set of row voltages for driving the first display segment during a first set of time periods, and for generating from the second set of modified orthonormal functions a second set of row voltages for driving the second display segment during a second set of time periods, wherein:
• at least one display row included in the second display segment is also included in the first display segment such that the at least one display row is driven during both the first and second sets of time periods;
• and
• transforming circuitry for transforming a first subset of the image data using the orthonormal functions to generate a first set of column voltages used to drive the columns during the first set of time periods, and for transforming a second subset of the image data using the orthonormal functions to generate a second set of column voltages used to drive the columns during the second set of time periods, wherein a portion of the image data that is included in both the first and second subsets thereof is transformed twice by the orthonormal functions.