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AssigneeInternational Business Machines Corporation
InventorsSeiji Koyama, Tohru Nozawa, Asao Terukina, Yasusuke Suzuki
Estimating the term…
A D/A converter of a current output type desirably compensates for changes in the switching characteristic that arise in each constant current circuit. The D/A converter generates an analog output current that is in response to the level of input digital data and outputs it from an output side by switching each of output currents of a plurality of constant current circuits either to the output side or to a non-output side, in response to the input digital data. The D/A converter performs feedback control, for values of the output currents for the constant current circuits, based on an analog output current at the non-output side during a period when the output currents of all of the constant current circuits are connected to the non-output sides.
A D/A converter, which generates an analog output current that is in response to the level of input digital data and outputs it from an output side by connecting each of output currents of a plurality of constant current circuits either to said output side or to a non-output side, in response to said input digital data, wherein:
A D/A converter, which generates an analog output current that is in response to the level of input digital data and outputs it from an output side by connecting each of output currents of a plurality of constant current circuits either to said output side or to a non-output side, in response to said input digital data, wherein:
A D/A converter, which receives digital input data, a horizontal sync signal, a vertical sync signal, and a blanking signal from a video controller and which connects each of output currents of a plurality of constant current circuits either to an output side or to a non-output side, in response to said digital input data, so that an analog output current that is consonant with said digital input data is acquired at said output side and is outputted to a display device, and which performs feedback control, for values of said output currents of said constant current circuits, based on an analog output current at said non-output side during a non-display period.
A D/A converter, which acquires an analog output current in response to input digital data, comprising:
Dependencies are inferred from the claim text.