Method for controlling a tree-dimensional projector

Patent metadata

Field	Value
Publication number	US-10009601-B2
Application number	US-201715451200-A
Country	US
Kind code	B2
Filing date	Mar 6, 2017
Priority date	Sep 27, 2011
Publication date	Jun 26, 2018
Grant date	Jun 26, 2018

Abstract

A projector includes a lamp that emits projection light to project 3D picture, in which a right eye image and a left eye image are represented in a time division manner, to an object, a synchronization signal transmission section which transmits shutter synchronization signal to glasses having a right eye shutter and a left eye shutter to control the opened state or the closed state of the right eye shutter and the left eye shutter, based on the signal indicating a displaying period of the right eye image and the left eye image of 3D picture, and a lamp drive section that supplies AC current having peak overlapping with a period when the right eye shutter of the glasses is in the opened state and peak overlapping with a period when the left eye shutter of the glasses is in the opened state to the lamp, based on the signal.

First claim

What is claimed is:

1. A method for controlling a three-dimensional projector comprising:
acquiring a picture signal from external source;
supplying a right eye image signal and a left eye image signal to a picture projection section so that a light valve displays right eye image picture and left eye image picture in a time division manner;
creating shutter synchronization signal so as to control a pair of glasses having a right eye shutter and a left eye shutter which are in an opened state or a closed state individually, and controls that the right eye shutter is in an opened state in a first period and the left eye shutter is in an opened state in a second period;
controlling a light source drive section so as to supplies a light source drive current to a light source in at least a part of the first period for projecting the right eye image picture and in at least a part of the second period for projecting the left eye image picture.

2. The method for controlling the three-dimensional projector according to claim 1 , creating start signal which supplied to the picture projection section and synchronized with the shutter synchronization signal.

3. The method for controlling the three-dimensional projector according to claim 1 , supplying the light source drive current to the light source so as to project the right eye image picture in the first period and the left eye image picture in the second period.

4. A method for controlling a three-dimensional projector to project a right eye image picture and a left eye image picture in a time division manner comprising:
supplying a light source drive current for controlling a light source to emit a first peak light for projecting the right eye image picture in a first period and a second peak light for projecting the left eye image picture in a second period;
supplying start pulse for transmitting shutter synchronization signal to a pair of glasses that include a right eye shutter and a left eye shutter so that the right eye shutter transmits a light in a third period and the left eye shutter transmits a light in a fourth period; and
wherein the third period includes the first period and the fourth period includes the second period.

5. The method for controlling the three-dimensional projector according to claim 4 , the third period is longer than the first period and the fourth period is longer than the second period.

6. The method for controlling the three-dimensional projector according to claim 4 , wherein, the transmitting shutter synchronization signal control the right eye shutter and the left eye shutter so that the right eye shutter transmits the right eye image picture in the third period and the left eye shutter transmits the left eye image picture in the fourth period.

7. The method for controlling the three-dimensional projector according to claim 4 , wherein, the transmitting shutter synchronization signal is created based on the start pulse.

8. The method for controlling the three-dimensional projector according to claim 4 , the first peak light and the second peak light are same brightness.

9. The method for controlling the three-dimensional projector according to claim 4 , a fifth period is arranged after the first period and between the first period and the second period, and a sixth period is arranged after the second period and between the first period and the second period.

10. The method for controlling the three-dimensional projector according to claim 4 , the shutter synchronization signal transmits through infrared transmission to the glasses.

11. A method for controlling a three-dimensional projector comprising:
supplying a right eye image signal and a left eye image signal to a picture projection section so as to project a right eye image picture in a first period and a left eye image picture in a second period in a time division manner;
creating shutter synchronization signal which controls a pair of glasses, the pair of glasses having a right eye shutter and a left eye shutter, so that the right eye shutter transmits a light in a third period and the left eye shutter transmits a light in a fourth period;
wherein the third period is longer than the first period and includes the first period, and the fourth period is longer than the second period and includes the second period, and
the right eye shutter transmits the right eye image picture and the left eye shutter transmits the left image picture.

12. The method for controlling the three-dimensional projector according to claim 11 , further comprising a light source drive section, wherein
the light source drive section supplies a light source drive current to a light source in the first period and the second period.

13. The method for controlling the three-dimensional projector according to claim 11 , the shutter synchronization signal transmits through infrared transmission to the glasses.

Assignees

• Seiko Epson Corp

Inventors

• Horiguchi Hirosada
• Yoshimoto Hiroshi
• Yamada Tadashi
• Fukuhara Keiji

Classifications

• H04N9/31

  Projection devices for colour picture display {, e.g. using electronic spatial light modulators [ESLM]} · CPC title

• G03B21/14

  Details · CPC title

• H04N13/324

  Colour aspects · CPC title

• H04N9/3155

  for controlling the light source (light source control per se H05B35/00 – H05B47/00; control of an illumination source for displays in general G09G3/3406) · CPC title

• G03B33/12

  using beam-splitting or beam-combining systems, e.g. dichroic mirrors · CPC title