公开(公告)号：US20180039344A1

公开(公告)日：2018-02-08

申请号：US15786652

申请日：2017-10-18

申请人： Seiko YAMAMOTO ,  Masanobu YAMAGATA ,  Naoyuki ISHIKAWA

发明人： Seiko YAMAMOTO ,  Masanobu YAMAGATA ,  Naoyuki ISHIKAWA

IPC分类号： G06F3/0354 ,  G01B11/00 ,  G06F3/042

CPC分类号： G06F3/03545 ,  G01B11/002 ,  G06F3/03547 ,  G06F3/042 ,  G06F3/0421 ,  G06F3/0428

摘要： A coordinate detection apparatus for detecting coordinates of a light-emitting pointer and a non-light-emitting pointer on a display surface, includes an imaging unit configured to capture an image of at least one of the light-emitting pointer and the non-light-emitting pointer in a predetermined range from the display surface; and a detection unit configured to detect a quantity of light generated by the light-emitting pointer emitting light in the predetermined range so as to detect the coordinates of the light-emitting pointer, and to detect a quantity of light emitted on the display surface and cut off by the non-light-emitting pointer in the predetermined range so as to detect the coordinates of the non-light-emitting pointer.

公开(公告)号：US20180275819A1

公开(公告)日：2018-09-27

申请号：US15992441

申请日：2018-05-30

申请人： Yoshiaki OSHIMA ,  Noritada OHI ,  Katsuyuki OMURA ,  Masafumi NAGAO ,  Naoyuki ISHIKAWA ,  Seiko YAMAMOTO ,  Masanobu YAMAGATA

发明人： Yoshiaki OSHIMA ,  Noritada OHI ,  Katsuyuki OMURA ,  Masafumi NAGAO ,  Naoyuki ISHIKAWA ,  Seiko YAMAMOTO ,  Masanobu YAMAGATA

IPC分类号： G06F3/041 ,  G06F3/042 ,  G06F3/0354

CPC分类号： G06F3/0416 ,  G06F3/03542 ,  G06F3/03545 ,  G06F3/0421 ,  G06F3/0428 ,  G06F3/0488 ,  G09G3/002 ,  G09G2380/06

摘要： A position detection device for detecting positions of a non-emitter and an emitter in a detection area includes one or more reflective members disposed around the detection area, illumination light sources to emit light toward the reflective member, light receiving sensors to receive light from the reflective member and light from the light emitter, and a control device to control the illumination light sources and the light emitter. Based on previous detection statuses of the non-light emitter and the light emitter, the control device sets a time ratio of a time of a non-light emitter detection mode to a time of a light emitter detection mode, and sets timings of the non-light emitter detection mode and the light emitter detection mode.

公开(公告)号：US20170177164A1

公开(公告)日：2017-06-22

申请号：US15379078

申请日：2016-12-14

申请人： Seiko YAMAMOTO ,  Katsuyuki OMURA ,  Noritada OHI ,  Yoshiaki OSHIMA ,  Masafumi NAGAO ,  Naoyuki ISHIKAWA ,  Masanobu YAMAGATA

发明人： Seiko YAMAMOTO ,  Katsuyuki OMURA ,  Noritada OHI ,  Yoshiaki OSHIMA ,  Masafumi NAGAO ,  Naoyuki ISHIKAWA ,  Masanobu YAMAGATA

IPC分类号： G06F3/042 ,  G06F3/041 ,  G06F3/0354

CPC分类号： G06F3/0428 ,  G06F3/03542 ,  G06F3/0416 ,  G06F3/042 ,  G06F3/0425 ,  G06F2203/04106

摘要： A coordinate detecting apparatus includes: a plurality of light-emitting and -receiving units arranged along an outer edge of the coordinate input area, the plurality of light-emitting and -receiving units each including a light-emitting part and a light-receiving part; at least one retroreflective member arranged along the outer edge of the coordinate input area; and a control unit to control the plurality of light-emitting and -receiving units to detect coordinates of a position of input made with a designation input unit in a first detection state or a second detection state.

公开(公告)号：US10180759B2

公开(公告)日：2019-01-15

申请号：US15379078

申请日：2016-12-14

申请人： Seiko Yamamoto ,  Katsuyuki Omura ,  Noritada Ohi ,  Yoshiaki Oshima ,  Masafumi Nagao ,  Naoyuki Ishikawa ,  Masanobu Yamagata

发明人： Seiko Yamamoto ,  Katsuyuki Omura ,  Noritada Ohi ,  Yoshiaki Oshima ,  Masafumi Nagao ,  Naoyuki Ishikawa ,  Masanobu Yamagata

IPC分类号： G06F3/042 ,  G06F3/0354 ,  G06F3/041

摘要： A coordinate detecting apparatus includes: a plurality of light-emitting and -receiving units arranged along an outer edge of the coordinate input area, the plurality of light-emitting and -receiving units each including a light-emitting part and a light-receiving part; at least one retroreflective member arranged along the outer edge of the coordinate input area; and a control unit to control the plurality of light-emitting and -receiving units to detect coordinates of a position of input made with a designation input unit in a first detection state or a second detection state.