Television – Stereoscopic – Stereoscopic display device
Reexamination Certificate
1998-10-22
2001-07-31
Britton, Howard (Department: 2713)
Television
Stereoscopic
Stereoscopic display device
Reexamination Certificate
active
06268881
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a stereoscopic display method and apparatus such as a stereoscopic television system, which can achieve a stereoscopic view on the basis of two, right and left image signals having a parallax.
In general, a stereoscopic display apparatus achieves a stereoscopic view by displaying image signals for the right and left eyes on display units for the right and left eyes, respectively.
In this case, a reproduction apparatus (display apparatus side) must discriminate the image signals for the right and left eyes from each other. For this purpose, a conventional apparatus adopts a method of adding a discrimination pulse to one image signal or changing the number of cycles of a color burst signal in one image signal on the image pickup device side.
However, in the conventional stereoscopic display apparatus, the image pickup device requires a circuit for adding a discrimination signal or a circuit for changing the number of cycles of the color burst signal, while the reproduction apparatus requires a circuit for extracting the added discrimination signal or a circuit for detecting the number of cycles of the color burst signal, resulting in a complicated system arrangement.
As for a stereoscopic television system, a standard such as CCIR or the like is not determined yet. For this reason, even when a certain system adds a discrimination signal, the added signal cannot often be discriminated by another system.
On the other hand, in place of adding such a discrimination signal, a user may connect, by himself or herself, image signals for the right and left eyes to the display units for the right and left eyes, respectively. However, if the user erroneously recognizes the image signals for the right and left eyes, if he or she keeps watching an image displayed in such a state, his or her eyes suffer considerable fatigue.
SUMMARY OF THE INVENTION
The present invention has been made to solve the above-mentioned problems, and has as its object to provide a stereoscopic display apparatus which can discriminate image signals for the right and left eyes and can normally display an image without adding any special signals for discriminating the image signals for the right and left eyes.
The above-mentioned object is achieved by the following apparatus or method.
A stereoscopic display apparatus which receives two different image signals, and displays the two different image signals on display means having portions for right and left eyes, respectively, comprises: right/left discrimination means for discriminating, based on a correlation between the input two different image signals, which of the two different image signals corresponds to a signal for the right or left eye; and switching means for switching image signals to be output to the display means on the basis of a discrimination result of the right/left discrimination means.
A stereoscopic display method which receives two different image signals, and displays the two different image signals on display means for right and left eyes, respectively, comprises: a right/left discrimination step of discriminating, based on a correlation between the input two different image signals, which of the two different image signals corresponds to a signal for the right or left eye; and a switching step of switching image signals to be output to the display means on the basis of a discrimination result of the right/left discrimination step.
Other features and advantages of the present invention will be apparent from the following description taken in conjunction with the accompanying drawings, in which like reference characters designate the same or similar parts throughout the figures thereof.
REFERENCES:
patent: 4145713 (1979-03-01), White
patent: 4510525 (1985-04-01), Kuperman et al.
patent: 4535354 (1985-08-01), Rickert
patent: 4567513 (1986-01-01), Imsand
patent: 4582393 (1986-04-01), Shieman
patent: 4709263 (1987-11-01), Brumage
patent: 4740836 (1988-04-01), Craig
patent: 5220441 (1993-06-01), Gerstenberger
patent: 5448294 (1995-09-01), Yamazaki
patent: 5856843 (1999-01-01), Muramoto
Patent Abstracts of Japan, JP 3295393, Dec. 26, 1991.
Britton Howard
Canon Kabushiki Kaisha
Morgan & Finnigan, L.L.P.
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