公开(公告)号：US10158848B2

公开(公告)日：2018-12-18

申请号：US15284062

申请日：2016-10-03

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Ken Mashitani ,  Takaaki Abe ,  Tamotsu Akeyama

IPC: H04N13/363 ,  H04N13/339 ,  H04N13/354 ,  H04N13/359 ,  H04N13/398 ,  G03B21/14 ,  G03B35/16 ,  H04N9/31 ,  H04N13/341

Abstract: A projection video display that projects video image suppresses deterioration of its quality which is attributed to a change in an optical path of the video image. A video signal generator performs control such that a second subframe in an N-th frame in a left-eye image is displayed on DMDs and then a second subframe in an N-th frame in a right-eye image is displayed on the DMDs. Furthermore, the video signal generator performs control such that a displayed location is not changed on a screen and the same types of subframes are displayed at the time when frames are switched.