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US 12,695,851 B2Granted
Projector apparatus, light source device, and light source drive method
AssigneeSony Group Corporation
InventorKeita Mori
Life of this patent
Estimating the term…
Abstract
A projector apparatus or a light source device includes: a first light source; a second light source, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source; a phase modulation element to convert light amount distribution of the second light source light; and an amplitude modulation element on which both the first light source light and the second light source light that has passed through the phase modulation element are incident. The signal processing unit generates a drive signal for the amplitude modulation element based on a gamma curve in accordance with a ratio between the first light source light and the second light source light incident on the amplitude modulation element.
Claims20
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element;
- and
- a phase modulation element configured to convert light amount distribution of the second light source light,
- wherein both the first light source light and the second light source light that has passed through the phase modulation element are incident on the amplitude modulation element.
4 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element,
- wherein the amplitude modulation drive signal is a signal for controlling a light amount of each pixel of the amplitude modulation element in accordance with a video signal, and
- wherein a control value of each pixel of the amplitude modulation element in accordance with a gradation value of each pixel in the video signal is generated on the basis of the gamma curve in accordance with the ratio between the first light source light and the second light source light.
4 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element, wherein the signal processing unit
- generates the amplitude modulation drive signal by obtaining the gamma curve in accordance with the ratio between the first light source light and the second light source light that are incident on the amplitude modulation element for each frame of a video signal.
3 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element, wherein the signal processing unit
- generates the amplitude modulation drive signal by obtaining the gamma curve in accordance with the ratio between the incident first light source light and second light source light for each pixel block obtained by splitting an in-plane part of the amplitude modulation element.
3 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element, wherein the signal processing unit
- generates the amplitude modulation drive signal by obtaining the gamma curve in accordance with the ratio between the incident first light source light and second light source light for each pixel of the amplitude modulation element.
3 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element, wherein the signal processing unit
- generates the amplitude modulation drive signal by obtaining a gamma curve in accordance with a representative value of the ratio between the first light source light and the second light source light that are incident on the amplitude modulation element.
3 more elements
A projector apparatus, comprising:
- a first light source configured to output first light source light;
- a second light source configured to output second light source light, a wavelength of primary color light of the second light source being different from a wavelength of primary color light of the first light source;
- an amplitude modulation element on which both the first light source light and the second light source light are incident, the amplitude modulation element being configured to perform amplitude modulation on incident light;
- and
- a signal processing unit configured to generate an amplitude modulation drive signal for the amplitude modulation element on a basis of a gamma curve in accordance with a ratio between the first light source light and the second light source light that are incident on the amplitude modulation element, wherein the signal processing unit
- generates the amplitude modulation drive signal for correcting a difference in white balances of the first light source and the second light source.
3 more elements
Dependencies are inferred from the claim text.