公开(公告)号：US20170237955A1

公开(公告)日：2017-08-17

申请号：US15425792

申请日：2017-02-06

申请人： Seiko Epson Corporation

发明人： Takaaki Koyama

IPC分类号： H04N9/31 ,  G06T7/70

CPC分类号： H04N9/3188 ,  G06F3/0416 ,  G06F3/0418 ,  G06F3/0421 ,  G06F2203/04104 ,  G06T7/70 ,  G06T2207/10016 ,  G06T2207/10152 ,  H04N9/3194

摘要： A position detection apparatus includes a first irradiation section and a second irradiation section that irradiate an operation surface with detection light, an imaging section that captures an image of the operation surface, and a detection section that detects a pointed position pointed with a pointing element based on the captured image. The first irradiation section is disposed in a position closer to the operation surface than the second irradiation section and emits light having intensity higher than the intensity of the light emitted from the second irradiation section. Instead, the position detection apparatus further includes an adjustment section that adjusts the intensity of the light emitted from at least one of the first irradiation section and the second irradiation section to adjust contrast between the pointing element and the operation surface to a value that exceeds a threshold.

公开(公告)号：US09715285B2

公开(公告)日：2017-07-25

申请号：US14598971

申请日：2015-01-16

申请人： SEIKO EPSON CORPORATION

发明人： Takaaki Koyama

IPC分类号： G06F3/042 ,  G06F3/041 ,  G06F3/01 ,  G06F3/03 ,  G01S17/00 ,  G01S17/46 ,  G01S17/88 ,  G01S7/497

CPC分类号： G06F3/0325 ,  G01S7/497 ,  G01S17/003 ,  G01S17/46 ,  G01S17/88 ,  G06F3/0418 ,  G06F3/0428

摘要： A position detection apparatus includes a projection unit that projects an image, a radiation unit that radiates light, a detection unit that detects reflected light of the light radiated from the radiation unit, and an output control unit that performs control for outputting information corresponding to a detection position of the reflected light based on a detection result from the detection unit when a radiation direction of the light radiated from the radiation unit is adjusted.

公开(公告)号：US09875525B2

公开(公告)日：2018-01-23

申请号：US14218108

申请日：2014-03-18

申请人： SEIKO EPSON CORPORATION

发明人： Takaaki Koyama

IPC分类号： G06T3/60 ,  G06F3/042 ,  G06F3/0354

CPC分类号： G06T3/60 ,  G06F3/03542 ,  G06F3/0425

摘要： An image processing device includes a detection section adapted to detect a pointing direction of a pointing body, and a rotation section adapted to rotate an image based on the pointing direction detected by the detection section.

公开(公告)号：US10321106B2

公开(公告)日：2019-06-11

申请号：US15425792

申请日：2017-02-06

申请人： Seiko Epson Corporation

发明人： Takaaki Koyama

IPC分类号： H04N9/31 ,  G06T7/70 ,  G06F3/00

摘要： A position detection apparatus includes a first irradiation section and a second irradiation section that irradiate an operation surface with detection light, an imaging section that captures an image of the operation surface, and a detection section that detects a pointed position pointed with a pointing element based on the captured image. The first irradiation section is disposed in a position closer to the operation surface than the second irradiation section and emits light having intensity higher than the intensity of the light emitted from the second irradiation section. Instead, the position detection apparatus further includes an adjustment section that adjusts the intensity of the light emitted from at least one of the first irradiation section and the second irradiation section to adjust contrast between the pointing element and the operation surface to a value that exceeds a threshold.

公开(公告)号：US09632616B2

公开(公告)日：2017-04-25

申请号：US14423615

申请日：2013-09-13

申请人： SEIKO EPSON CORPORATION

发明人： Yasuyuki Kobayashi ,  Takaaki Koyama ,  Nobuyuki Otsuki ,  Masahiro Horiguchi ,  Yukihiro Karasawa

IPC分类号： G06F3/033 ,  G06F3/037 ,  G09G1/00 ,  G09G3/28 ,  G09G3/22 ,  G06F3/041 ,  G06F3/042 ,  H04B10/114 ,  G06F3/0354 ,  G06F3/03

CPC分类号： G06F3/0416 ,  G06F3/0304 ,  G06F3/03542 ,  G06F3/0425 ,  H04B10/1141

摘要： An interactive system includes a transmitter (light-emitting pen) configured to transmit an optical signal and a projector. The projector includes a signal-intensity setting unit in which intensity information of a synchronization signal is set, a signal-intensity control unit (light-emission control unit) configured to control the intensity of the synchronization signal on the basis of the setting of the signal-intensity setting unit, a synchronization-signal transmitting unit (infrared-light emitting unit) configured to transmit the synchronization signal, and an image pickup unit configured to pick up an image of the optical signal transmitted from the transmitter. The transmitter includes a receiving unit (pen reception unit) configured to receive the synchronization signal and an optical-signal transmitting unit (pen control unit and a light-emitting diode) configured to transmit the optical signal in synchronization with the synchronization signal received by the receiving unit.