公开(公告)号：US11112687B2

公开(公告)日：2021-09-07

申请号：US16844525

申请日：2020-04-09

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Tetsuro Narikawa ,  Yubi Takashimada ,  Kiyoshi Oda

IPC: G03B21/20 ,  H04N9/31 ,  G02B26/00

Abstract: A projector is provided which includes a first light source device configured to emit light in a first wavelength range, a first wheel having formed thereon a plurality of light source segments configured to emit lights in different wavelength ranges upon receiving light in the first wavelength range, a second wheel having formed thereon a plurality of areas configured to dim light emitted from the first wheel, a display device onto which light emitted from the second wheel is shined to thereby form image light, and a processor configured to control the first light source device, the first wheel and the second wheel in a synchronized fashion, wherein the processor performs a masking process on the image light when either or both of a rotation frequency difference and a phase shift between the first and the second wheels are predetermined thresholds or greater.

公开(公告)号：US11496719B2

公开(公告)日：2022-11-08

申请号：US16824938

申请日：2020-03-20

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Yubi Takashimada ,  Tetsuro Narikawa ,  Kiyoshi Oda

IPC: H04N9/31 ,  G03B21/20

Abstract: A projector of the present invention includes a light source unit including a semiconductor light emitting element and a color wheel and emitting lights in first and second wavelength ranges in time division, a display device receiving light source light to form image light, a projection optical system for projecting the image light onto a projection target, a delay time setting module for shifting a start timing of a color mixing period when the lights in the first and second wavelength ranges are emitted in a mixed fashion in a spoke period of the color wheel during which emissions of the lights in the first and second wavelength ranges are switched over based on an index indicating a brightness of light from the light source unit, and a light source driving module for driving the light source unit based on a setting set by the delay time setting module.

公开(公告)号：US10242651B2

公开(公告)日：2019-03-26

申请号：US15460617

申请日：2017-03-16

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Yubi Takashimada

IPC: G09G5/26 ,  G09G5/34 ,  G09G5/30 ,  G09G5/377 ,  G09G3/00

Abstract: According to one embodiment, a display apparatus includes a display unit configured to display an image; a character information acquisition unit configured to acquire character information which is associated with the image that is displayed on the display unit; a size acquisition unit configured to acquire a size of the image that is displayed on the display unit; and a display controller configured to determine a display mode of the character information acquired by the character information acquisition unit, in accordance with the size of the image which was acquired by the size acquisition unit, and to display characters and the image on the display unit.