Display device
AssigneeSony Corporation
InventorsYukihiro Sasazaki, Yoshitake Kondo
Life of this patent
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Abstract
A display device able to give an image giving a good impression such as a sharp contrast in a dark scene and maintaining brightness in a bright scene, that is, a display device comprising a variable aperture iris and a control circuit for controlling opening/closing of the iris in accordance with a state of a level of an input signal forming a screen, wherein the control circuit controls the iris so that a response of an open/close operation of the iris is different between a case where the signal level fluctuates from a dark level to a bright level and a case where the signal level fluctuates from a bright level to a dark level.
Claims20
A display device comprising:
- a variable aperture iris and
- a control circuit for controlling opening/closing of the iris in accordance with a state of a level of an input signal forming a screen, wherein
- the control circuit controls the iris so that a response of an open/close operation of the iris is different between a case where the signal level fluctuates from a dark level to a bright level and a case where the signal level fluctuates from a bright level to a dark level.
A display device comprising:
- a variable aperture iris,
- a control circuit for controlling opening/closing of the iris in accordance with a state of a level of an input signal forming a screen, and
- a signal adjustment unit able to adjust the gain of the signal to be displayed, wherein
- the control circuit controls the iris so that the response of the open/close operation of the iris differs between the case where the signal level fluctuates from a dark level to a bright level and the case where the signal level fluctuates from a bright level to a dark level, then makes the signal adjustment unit adjust the gain corresponding to the iris control.
A display device comprising:
- a light modulating unit for modulating incident illumination light based on an input image signal and emitting the result,
- a variable aperture iris unit for opening or closing an iris so as to form an aperture having a concentric circular state with respect to a light axis and adjusting the amount of the incidence of the illumination light upon the light modulating unit based on a control signal,
- a detection unit for detecting a mean signal level of input image signals,
- a signal adjustment unit able to adjust the gain of the image signal to be displayed, and
- a control circuit for controlling the iris so that the response of the open/close operation of the iris is different between the case where the signal level fluctuates from a dark level to a bright level and the case where the signal level fluctuates from a bright level to a dark level, then making the signal adjustment unit adjust the gain corresponding to the iris control.
Dependencies are inferred from the claim text.