3D visualization

Patent metadata

Field	Value
Publication number	US-9355488-B2
Application number	US-201313915175-A
Country	US
Kind code	B2
Filing date	Jun 11, 2013
Priority date	Nov 28, 2007
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

A liquid crystal (LC) display system includes an LC panel and a backlight unit. A controller controls the LC panel to display first and a second images forming a stereoscopic pair; controls the backlight unit to only illuminate the LC panel during a first time period after pixels of the LC panel have a stable optical state according to the first image, and during a second time period after the pixels have a stable optical state according to the second image; and generates a control signal for controlling a first shutter glass of a pair of 3D shutter glasses to be in a transmissive state for enabling viewing of the pixels of the LC panel only during the first time period, and a second shutter glass to be in a transmissive state for enabling viewing of the pixels of the LC panel only during the second time period.

First claim

The invention claimed is:

1. A pair of 3D shutter glasses comprising:
a receiver configured to receive light directed towards the pair of 3D shutter glasses, said light emanating from a television display and being generated by a backlight of said television display;
a burst detector configured to detect bursts of the light received, and timing of the detected bursts, said bursts of the light resulting from said backlight being selectively activated at and for a duration of at least each vertical blanking interval in a television signal being displayed; and
a driver configured to detect a modulation of the bursts of light, wherein the modulation indicates which shutter glass of the pair of 3D shutter glasses has to become transmissive, and to control a start time and a time duration of a transmissive state of the shutter glass of the pair of 3D shutter glasses indicated by the modulation, the start time being based on the detected timing of the bursts.

2. The pair of 3D shutter glasses as claimed in claim 1 , wherein the driver controls each shutter glass of the pair of 3D shutter glasses to be transmissive for a longer period of time than that shutter glass is non-transmissive with respect to a time period between starts of alternate bursts of light.

Assignees

• Koninkl Philips Nv

Inventors

• Goris Roland Focco Everhard
• Redert Peter-Andre

Classifications

• G09G2310/024

  Scrolling of light from the illumination source over the display in combination with the scanning of the display screen · CPC title

• H04N13/341

  using temporal multiplexing · CPC title

• H04N13/332

  Displays for viewing with the aid of special glasses or head-mounted displays [HMD] · CPC title

• G02B30/25

  using polarisation techniques · CPC title

• G09G3/342

  using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines · CPC title