Dispositif d'étalonnage pour téléviseur couleur

Kalibrierapparat für Farbfernsehgerät

Calibration apparatus for colour TV display

Abstract

Apparatus for use in calibrating a display system comprising digital-to-analogue converters (D.A.C) (11,12,13) for converting a digital colour control signal to analogue colour component signals which are suitable for controlling an electronic display. An analogue signal modifier modifies the signals from the D.A.C. The apparatus also comprises a switch (10) for connecting between the D.A.C. and the analogue signal modifier. The switch is operable in a first mode (52,54) to pass signals from the D.A.C. (11,12,13) directly to the analogue signal modifier or in a second mode (53) to pass analogue calibration colour component signals to the analogue signal modifier such that the appearance of the signals from the D.A.C. and the calibration signals can be visually compared on a screen (17) to determine whether any reproduction errors are in the D.A.C. (11,12,13) or in the signal modifier.

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Patent Citations (3)

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NO-Patent Citations (0)

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Cited By (4)

    Publication numberPublication dateAssigneeTitle
    CN-100477810-CApril 08, 2009熊猫电子集团有限公司;南京熊猫电子股份有限公司High definition color TV variable debugging method
    GB-2276057-BApril 30, 1997Sony Broadcast & Communication, Sony Uk LtdTesting video equipment
    US-7103800-B2September 05, 2006Matsushita Electric Industrial Co., Ltd.Display device, receiver, and test apparatus
    WO-03041419-A1May 15, 2003Matsushita Electric Industrial Co., Ltd.Display device, receiver, and test apparatus