公开(公告)号：US09958763B2

公开(公告)日：2018-05-01

申请号：US15040669

申请日：2016-02-10

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Takeo Ishizu ,  Toshiharu Arai

IPC: G03B21/20 ,  G03B33/08

CPC classification number: G03B21/206 ,  G03B21/204 ,  G03B33/08

Abstract: A projection device includes a semiconductor light-emitting element, a rotary wheel configured to emit lights of a plurality of colors in a time-division manner by using light which the semiconductor light-emitting element emits, and a controller configured to start, at a time of activating the device, rotation of the rotary wheel and output of a signal, which instructs a turn-on timing, to the semiconductor light-emitting element, in a state in which supply of power to the semiconductor light-emitting element is stopped, and to start, thereafter, the supply of the power to the semiconductor light-emitting element, based on a predetermined condition relating to an activation state.

公开(公告)号：US12292678B2

公开(公告)日：2025-05-06

申请号：US17477217

申请日：2021-09-16

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshiharu Arai

IPC: G03B21/20 ,  H05B47/105

Abstract: A projecting apparatus includes a projector configured to output projected light; a receiver configured to obtain from outside, image data of a target image projected by the projector; and a processor configured to control operation of the projector. The processor is configured to set a light intensity of the projected light to a light decreased state lower than a standard value when the image data is not obtained by the receiver.

公开(公告)号：US11902713B2

公开(公告)日：2024-02-13

申请号：US17475444

申请日：2021-09-15

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshiharu Arai

IPC: H04N9/31 ,  G08B5/22 ,  G08B3/10 ,  G06F3/14

CPC classification number: H04N9/31 ,  G06F3/14 ,  G08B3/10 ,  G08B5/22

Abstract: There is provided a projection system including: a projector configured to project an image on a projection surface; and a computer configured to communicate with the projector and instruct the projector to project the image in accordance with an operation by a user. The projector includes a first processor that sends information on an operation state of the projector to the computer while communicating with the computer. The computer includes a display and/or a speaker and a second processor that makes a notification based on the information from the projector by causing the display to display a notification and/or by causing the speaker to output a voice.

公开(公告)号：US20220360752A1

公开(公告)日：2022-11-10

申请号：US17871691

申请日：2022-07-22

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshiharu Arai

IPC: H04N9/31 ,  G03B21/20

Abstract: A signal detection device of the present invention includes a first control unit configured to determine whether there are inputs of a plurality of external signals connected thereto, a second control unit configured to be activated after the first control unit is activated, a first input unit connected directly to the first control unit and configured to input a first external signal, which is one type of the plurality of external signals, and a second input unit connected to the first control unit via the second control unit and configured to input a second external signal, which is another type of the plurality of external signals, and the first control unit determines whether there is an input of the first external signal before the second control unit is activated and determines whether there is an input of the second external signal after the second control unit is activated.

公开(公告)号：US11431946B2

公开(公告)日：2022-08-30

申请号：US16715125

申请日：2019-12-16

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshiharu Arai

IPC: H04N9/31 ,  H04N5/46 ,  G03B21/20

Abstract: A signal detection device of the present invention includes a first control unit configured to determine whether there are inputs of a plurality of external signals connected thereto, a second control unit configured to be activated after the first control unit is activated, a first input unit connected directly to the first control unit and configured to input a first external signal, which is one type of the plurality of external signals, and a second input unit connected to the first control unit via the second control unit and configured to input a second external signal, which is another type of the plurality of external signals, and the first control unit determines whether there is an input of the first external signal before the second control unit is activated and determines whether there is an input of the second external signal after the second control unit is activated.

公开(公告)号：US11695905B2

公开(公告)日：2023-07-04

申请号：US17871691

申请日：2022-07-22

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Toshiharu Arai

IPC: H04N9/31 ,  G03B21/20

CPC classification number: H04N9/3155 ,  G03B21/206 ,  H04N9/3176 ,  H04N9/3179

Abstract: A signal detection device of the present invention includes a first control unit configured to determine whether there are inputs of a plurality of external signals connected thereto, a second control unit configured to be activated after the first control unit is activated, a first input unit connected directly to the first control unit and configured to input a first external signal, which is one type of the plurality of external signals, and a second input unit connected to the first control unit via the second control unit and configured to input a second external signal, which is another type of the plurality of external signals, and the first control unit determines whether there is an input of the first external signal before the second control unit is activated and determines whether there is an input of the second external signal after the second control unit is activated.

公开(公告)号：US09818374B2

公开(公告)日：2017-11-14

申请号：US14331852

申请日：2014-07-15

Applicant: CASIO COMPUTER CO., LTD.

Inventor： Takeo Ishizu ,  Toshiharu Arai

IPC: G03B21/20 ,  H04N9/31 ,  G09G5/18 ,  G09G5/02 ,  H04N5/74 ,  G09G3/34

CPC classification number: G09G5/18 ,  G03B21/2053 ,  G09G3/3413 ,  G09G5/02 ,  G09G2310/0235 ,  H04N5/7416 ,  H04N9/3155

Abstract: Disclosed is a light source unit which emits fluorescence light to a display element which displays an image by using the fluorescence light including an excitation light source which emits excitation light, a fluorescent plate including a fluorescence emission region on a surface of a circular substrate which emits the fluorescence light by the fluorescence emission region being irradiated with the excitation light from the excitation light source, a drive unit which rotates the fluorescent plate in a circumferential direction and a control unit which controls the excitation light source and the drive unit. And the control unit controls the drive unit so that a display frequency of the display element and a rotation frequency of the fluorescent plate fulfill formula (1) j×display frequency=k×rotation frequency (j, k are integers, j>k)  (1).