Display device driving apparatus, display device, and method...

Details Display device driving apparatus, display device, and method... Display device driving apparatus, display device, and method...

G - Physics

09

G

G09G 3/20 (2006.01) G01R 31/28 (2006.01)

Patent

CA 2551693

There are included an analog signal output part (30) for outputting analog image signals to the respective ones of a plurality of image output terminals (1); a signal switch part (40) for sequentially selecting analog image signals from the analog signal output part (30); and a delta-sigma modulator (9) for delta-sigma modulating the analog image signals selected by the signal switch part (40) and for outputting a 1-bit digital modulated signal from a delta- sigma modulation output terminal (2). The delta-sigma modulator (9) converts the analog image signals outputted from the multiple image output terminals (1) to the 1-bit digital modulated signal, which can be extracted, as a test signal, from the delta-sigma modulation output terminal (2) to the exterior via a single wire.

L'invention concerne une partie d'émission de signal analogique (30) émettant des signaux d'émission des signaux d'image analogiques vers une chacun d'une pluralité de terminaux de sortie d'image (1) ; une partie de commutation de signal (40) pour la sélection séquentielle de signaux d'image analogiques en provenance de la partie d'émission de signaux (30) ; et un modulateur delta-sigma (9) assurant la modulation delta-sigma du signal d'image analogique sélectionné par la partie de commutation (40) et émettant un signal numérique modulé sur 1 bit émanant du terminal de sortie de modulation delta-sigma. Le modulateur delta-sigma (9) convertit les signaux d'image analogiques émanant des terminaux de sortie d'image multiples (1) en un signal numérique modulé sur 1-bit, lequel peut être extrait, en tant que signal d'essai du terminal de sortie de modulation delta-sigma (2) vers l'extérieur via un fil unique.

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