Projection apparatus and projection method
AssigneeCasio Computer Co., Ltd.
InventorMamoru Shibasaki
Life of this patent
Estimating the term…
Abstract
A projection apparatus projecting images of respective color components sequentially includes a light source section having a plurality of light emitting elements (where n is a natural number greater than one), and a driving control section for driving each of the light emitting elements making up the light source section, by a pulse width modulation scheme with a phase difference based on λ/n (where λ is a lighting period unit), in synchronism with a projection period unit of the image of each color component.
Claims10
A projection apparatus which projects images of respective color components sequentially by time division, the projection apparatus comprising:
- a light source section comprising k×n color light emitting elements such that n color light emitting elements are provided for each of k colors forming a color image (where n is a natural number greater than one, and k is a natural number greater than two);
- and
- a driving control section which drives the color light emitting elements to emit light simultaneously in at least two of the k colors, wherein one of the at least two colors is a main color, and the other at least one color is a supplementary color;
- wherein the driving control section drives each of the n light emitting elements of the supplementary color by a pulse width modulation scheme based on a phase difference of λ/(n·i) (where λ is a lighting period unit and i is a natural number greater than one), in synchronism with a projection period unit of the image of each color component.
A method of driving a projection apparatus which projects images of respective color components sequentially by time division, wherein the projection apparatus includes a light source section comprising k×n color light emitting elements such that n color light emitting elements are provided for each of k colors forming a color image (where n is a natural number greater than one, and k is a natural number greater than two), the projection method comprising:
- driving the color light emitting elements to emit light simultaneously in at least two of the k colors, wherein one of the at least two colors is a main color, and the other at least one color is a supplementary color;
- wherein the driving comprises driving each of the n light emitting elements of the supplementary color by a pulse width modulation scheme based on a phase difference of λ/(n·i) (where λ is a lighting period unit and i is a natural number greater than one), in synchronism with a projection period unit of the image of each color component.
Dependencies are inferred from the claim text.