DISPLAY DEVICE DRIVING APPARATUS, DISPLAY DEVICE, AND METHOD FOR TESTING DRIVING APPARATUS OR DISPLAY DEVICE

• Main Authors: TANAKA, YOSHITO, KATSU, MITSUNORI
• Format: Patent
• Language: English; French; Japanese
• Published: 14.07.2005
• Edition: 7
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CRYPTOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; DISPLAY; EDUCATION; FREQUENCY-CHANGING; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEALS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; TESTING

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.