Projection-type image display device
AssigneeHitachi Maxell, Ltd.
InventorsEriko NAGATA, Shinji ONODERA, Satomi MORISHITA, Naoya OKA, Masaaki IWANAGA
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Abstract
This projection-type image display device is provided with: a lamp drive unit that drives a lamp; a lamp voltage detection unit that detects a lamp interelectrode voltage (hereinafter referred to as a lamp voltage); an image correction unit that corrects image qualities of image signals to be supplied to an image display element; and a control unit that controls a correction quantity of the image correction unit on the basis of the lamp voltage detected by means of the lamp voltage detection unit. Consequently, deterioration of visibility of a projection image can be suitably suppressed.
Claims12
A projection-type image display device including a discharge lamp as a light source, comprising:
- a lamp driving unit configured to drive the discharge lamp;
- a lamp voltage detection unit configured to detect a voltage between electrodes (hereinafter, a lamp voltage) of the discharge lamp;
- an image correction processing unit configured to perform an image quality correction of an image signal supplied to an image display element;
- and
- a control unit configured to control an amount of correction for the image correction processing unit based on the lamp voltage detected by the lamp voltage detection unit.
A lamp block comprising
- a discharge lamp used as a light source for a projection-type image display device, wherein
- a microcomputer is housed in the lamp block, the microcomputer storing performance data and identification information unique to the discharge lamp, the microcomputer being configured to be communicative with a control unit of the projection-type image display device.
Dependencies are inferred from the claim text.