DAC with feedback control for current source bias during non-display period

Year	Description
1996	Invention patented by Seiji Koyama, Tohru Nozawa, Asao Terukina, and Yasusuke Suzuki on April 31th, 1996. Abstract: 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.
Source: selected by the editor from original sources.

Invention: DAC with feedback control for current source bias during non-display period