公开(公告)号：US11132964B2

公开(公告)日：2021-09-28

申请号：US16761709

申请日：2018-10-04

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Toshiyuki Maeda ,  Hideki Aoyama ,  Kensuke Nagauchi ,  Kazuhiko Nono ,  Kazuma Sakamoto ,  Mitsuaki Oshima

IPC: G09G3/36 ,  G09G5/10 ,  H04N9/31

Abstract: A display device includes a liquid crystal panel and a light source that emits light onto the liquid crystal panel, the display device including: a video signal obtainer that obtains a video signal; a visible light signal obtainer that obtains a visible light signal; a panel controller that drives the liquid crystal panel at a predetermined frequency according to the video signal obtained; and a light source controller that repeats, in a predetermined cycle, a first control for causing a luminance change in the light source according to the visible light signal. The light source controller synchronizes a control for repeating the first control with a cycle for driving the liquid crystal panel by the panel controller.

公开(公告)号：US20240364850A1

公开(公告)日：2024-10-31

申请号：US18646291

申请日：2024-04-25

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Shota Yamamoto ,  Kazuhiko Nono ,  Daizou Seko ,  Takaaki Gyoten

IPC: H04N9/31 ,  G01R33/07

CPC classification number: H04N9/3155 ,  G01R33/072 ,  H04N9/3161

Abstract: Provided is a projector configured to modulate light from a light source unit and project image light, the projector including: a current measurement unit that measures a current supplied from a power supply, the current including at least a current supplied to the light source unit of the projector; and a controller that compares a measured current value measured by the current measurement unit with limit value information determined by user input or based on data stored in advance, and controls power output to the light source unit in accordance with a comparison result.