Method for controlling a tree-dimensional projector

• US 10,009,601 B2
• Filed: 03/06/2017
• Issued: 06/26/2018
• Est. Priority Date: 09/27/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Horiguchi, Hirosada, Yoshimoto, Hiroshi, Yamada, Tadashi, Fukuhara, Keiji
• Primary Examiner(s): Chowdhury, Sultan
• Application Number:
  US15/451,200
• Publication Number:
  US 20170180718A1
• Time in Patent Office: 477 Days
• CPC Class Codes: G02B 30/24 involving temporal multiplexing, e.g. using sequentially activated left and right shutters
• CPC Class Codes: G03B 21/006 using LCD's
• CPC Class Codes: G03B 21/2053 Intensity control of illuminating light controlled by video signal processing H04N5/74 or H04N9/31
• CPC Class Codes: G03B 33/08 Sequential recording or projection G03B33/02, G03B33/04, G03B33/06 take precedence
• CPC Class Codes: G03B 33/12 using beam-splitting or beam-combining systems, e.g. dichroic mirrors
• CPC Class Codes: G03B 35/16 by sequential viewing
• CPC Class Codes: G03B 35/24 using apertured or refractive resolving means on screens or between screen and eye
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/3406 Control of illumination source illumination devices structurally associated with liquid crystal cells G02F1/1336
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/341 using temporal multiplexing
• CPC Class Codes: H04N 13/344 with head-mounted left-right displays
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof
• CPC Class Codes: H04N 2213/008 Aspects relating to glasses for viewing stereoscopic images
• CPC Class Codes: H04N 9/31 Projection devices for colour picture display , e.g. using electronic spatial light modulators [ESLM]
• CPC Class Codes: H04N 9/3155 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

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.

Claims

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.