Computer graphics processing and selective visual display system – Display driving control circuitry – Adjusting display pixel size or pixels per given area
Reexamination Certificate
2007-05-01
2007-05-01
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display driving control circuitry
Adjusting display pixel size or pixels per given area
Reexamination Certificate
active
10462859
ABSTRACT:
The invention in one embodiment is an apparatus. The apparatus includes a lookup table having a set of entries, each entry capable of maintaining a value. The apparatus also includes a DDA (Differential Digital Analyzer) table having a set of entries, each entry capable of maintaining a value and each entry of the DDA table corresponding to an entry of the lookup table. The apparatus further includes a first multiplexing unit having a set of inputs, each input corresponding to and coupled to an entry of the DDA table. The first multiplexing unit also having a control input, the control input causing the first multiplexing unit to route one of the inputs of the set of inputs to an output. Additionally, the apparatus includes a comparison block having logic suitable for comparing each entry of the lookup table to a comparison value. Furthermore, the apparatus include a select control block having logic suitable for generating a control signal based on an output of the comparison block, the output of the comparison block indicating which entry of the lookup table matched the comparison value. The control signal is generated on an output of the select control block, and the output of the select control block is coupled to the control input of the first multiplexing unit.
REFERENCES:
patent: 4574279 (1986-03-01), Roberts
patent: 6348931 (2002-02-01), Suga et al.
patent: 6377265 (2002-04-01), Bong
patent: 6448976 (2002-09-01), Nitta et al.
Chang Richard
Chang Terry
Wong Raymond
Blakely , Sokoloff, Taylor & Zafman LLP
Hjerpe Richard
Nguyen Kevin M.
Silicon Motion Inc.
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