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US 7,126,518 B2Granted
Output circuit, digital analog circuit and display device
AssigneesNEC Corporation, NEC Electronics Corporation
InventorHiroshi Tsuchi
Life of this patent
Estimating the term…
Abstract
A selection circuit receives a plural number (m) of respective different values of voltages as reference voltages to select and output two voltages. An amplifier receives at two input terminals the two reference voltages output from the selection circuit to output an output voltage extrapolated from the two input terminal voltages.
Claims44
An output circuit comprising:
- a selection circuit, receiving a plural number (m) of reference voltages having respective different voltage values, for selecting two of the same or different reference voltages out of said m reference voltages, based on an input selection signal to supply the selected reference voltages to first and second terminals;
- and
- an amplifier, receiving the voltages supplied to said first and second terminals, for extrapolating the voltages of said first and second terminals by a preset extrapolation ratio to output the resulting voltage at an output terminal;
- wherein
- a number equal to a second power of m (m2) is the maximum number of respective different voltage levels that can be output from said output terminal responsive to the input selection signal.
2 more elements
Dependencies are inferred from the claim text.