Stereo picture recognition device and method of displaying stereo picture

• US 20020044350A1
• Filed: 06/22/2001
• Published: 04/18/2002
• Est. Priority Date: 06/21/2000
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sato, Seiji, Kawamura, Akira
• Granted Patent: US 7,068,241 B2
• Time in Patent Office: Days
• US Class Current: 359/465
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: H04N 13/161 Encoding, multiplexing or demultiplexing different image signal components for multi-view video sequence encoding H04N19/597
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388
• CPC Class Codes: H04N 13/365 using digital micromirror devices [DMD]
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

A stereo picture recognition device has a time-sharing picture display shutter disposed between a display surface of a display device and a viewer. The time-sharing picture display shutter has a function of shutting off only an area covered by a viewing angle which corresponds to a display area of the display device.

Claims

1. A stereo picture recognition device which comprises:

a time-sharing picture display shutting means disposed between a display surface of a display device and a viewer, the time-sharing picture display shutting means having a function of shutting off only an area covered by a viewing angle which corresponds to a display area of the display device.

2. The stereo picture recognition device as claimed in claim 1, in which the time-sharing picture display shutting means is so constituted as to operate for a light having a linear polarization.

3. The stereo picture recognition device as claimed in claim 1, in which the time-sharing picture display shutting means is so constituted as to operate for a light having a circular polarization.

4. The stereo picture recognition device as claimed in claim 1, in which the display device comprises a spontaneous light display.

5. The stereo picture recognition device as claimed in claim 4, in which the spontaneous light display is a cathode ray tube.

6. The stereo picture recognition device as claimed in claim 1, in which the display device comprises an optical modulation display.

7. The stereo picture recognition device as claimed in claim 1, in which the time-sharing picture display shutting means comprises:

a first polarization filter which is so disposed as to oppose the display surface of the display device,

a second polarization filter which is so disposed as to oppose a right eye and a left eye of the viewer, and

a liquid crystal sealing body.

8. The stereo picture recognition device as claimed in claim 7, in which the second polarization filter and the liquid crystal sealing body are fitted to a head portion of the viewer.

9. The stereo picture recognition device as claimed in claim 7, in which the second polarization filter and the liquid crystal sealing body are held by other than being fitted to a head portion of the viewer.

10. A stereo picture recognition device which comprises:

a liquid crystal shutter portion for transmitting and shutting off a light which is emitted from a picture displayed on a display surface of a display device toward each of a right eye and a left eye of a viewer, the transmission and shutoff of the light being carried out substantially synchronously with a change in the picture displayed and being carried out alternately for the right eye and the left eye, the liquid crystal shutter portion comprising;

a first polarization filter which is so disposed as to oppose the display surface of the display device;

a pair of second polarization filters, each of which is disposed at a front portion of one of the right eye and the left eye of the viewer; and

a liquid crystal sealing body disposed between the first polarization filter and the second polarization filters.

11. The stereo picture recognition device as claimed in claim 10, in which the liquid crystal shutter portion further comprises:

a pair of ¼

wavelength plates which comprises;

a first ¼

wavelength plate which is so disposed as to oppose the first polarization filter, and

a second ¼

wavelength plate which is so disposed as to oppose the liquid crystal sealing body.

12. The stereo picture recognition device as claimed in claim 10, in which the display device comprises a spontaneous light display.

13. The stereo picture recognition device as claimed in claim 12, in which the spontaneous light display is a cathode ray tube.

14. The stereo picture recognition device as claimed in claim 10, in which the display device comprises an optical modulation display.

15. The stereo picture recognition device as claimed in claim 10, in which the second polarization filter constitutes a part of glasses.

16. The stereo picture recognition device as claimed in claim 10, in which the second polarization filter is held by the display device.

17. A method of displaying a stereo picture, the method comprising:

i) emitting a light from a picture toward each of a right eye and a left eye of a viewer, the picture being displayed on a display surface of a display device;

ii) transmitting and shutting off the light toward each of the right eye and the left eye by means of a liquid crystal shutter portion substantially synchronously with a change in the picture displayed, the transmission and shutoff of the light being carried out alternately for the right eye and the left eye, the liquid crystal shutter portion comprising;

a first polarization filter which is so disposed as to oppose the display surface of the display device,

a pair of second polarization filters, each of which is disposed at a front portion of one of the right eye and the left eye of the viewer, and

a liquid crystal sealing body disposed between the first polarization filter and the second polarization filters; and

iii) leading the picture to each of the right eye and the left eye, the picture led to the right eye and the picture led to the left eye being different from each other.