Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1988-06-28
1991-04-30
Richardson, Robert L.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358 3, 358 88, 358341, 358343, G11B 700, H04N 5781
Patent
active
050123513
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a stereoscopic video disc record and a recording and reproducing apparatus therefor and, more particularly, to a stereoscopic video disc record and a recording and reproducing apparatus therefor used in a stereoscopic image system for artificially creating a stereoscopic image using binocular parallax of a human being.
BACKGROUND OF THE INVENTION
Conventionally, a system has been implemented which creates a stereoscopic image artificially using successfully a visual function of a human being for stereoscopic image. Such stereoscopic image system is designed to pick up an image of the same object by two television cameras placed corresponding to human binocular parallax and to supply image information for right and left eyes obtained by these two television cameras, to right and left eyes of a viewer, respectively. A concrete method therefor is shown in Japanese Patent Laying-Open Gazette No. 160292/1985 in which image information for respective eyes are alternately supplied to a television receiver for each field, and in relation to the supplying operation, light shutters of eyeglasses (special eyeglasses for stereoscopic view on which light shutters are provided for left and right eyes, respectively) are activated alternately. Another method has been also considered in which image information for both eyes are displayed on a screen at the same time using beams having different planes of polarization and the displayed pieces of image information are viewed by polarizing eyeglasses (a polarization axis for a right eye coincides with a plane of polarization of image information for a right eye and a polarization axis for a left eye coincides with a plane of polarization of image information for a left eye).
The above described stereoscopic image system requires special eyeglasses because the image looks doubled on a displayed screen when viewed through a direct visual observation. In effect, however, viewers do not always have eyeglasses. Especially, when one television receiver is viewed by many people, such problem is likely to arise. Therefore, the stereoscopic image system is preferably designed not only to display a stereoscopic image but also to display a conventional TV image.
There are two types of the above described stereoscopic systems; one receives a broadcasting signal of a stereoscopic image to display the stereoscopic image, and the other reproduces stereoscopic image information recorded in a recording medium by a player to display the stereoscopic image. At present, the latter is more popular which reproduces the recording medium, especially the stereoscopic video disc record by video disc player to display the stereoscopic image. If the stereoscopic video disc record is used as an image information source, the stereoscopic video disc record is required to be adaptable to reproduction of both stereoscopic image information and two dimensional image information in order to satisfy the above described requirement, that is, compatibility between stereoscopic reproduction and plane reproduction.
A stereoscopic video disc record of VHD system is published in a journal, "Television Technique", pp. 20-23, published by Denshi Gijutsu Shuppan Kabushiki Kaisha (Electron Technology Publishing Co., Ltd.), Jan. 1, 1986, in which not only stereoscopic image information but also two dimensional image information can be reproduced. This stereoscopic video disc record appeared in the prior art is constructed to have image information recorded on spiral recording tracks. The recording tracks are divided into four recording regions by 90 degrees per rotation of the stereoscopic video disc record and the image information for a right eye or a left eye for 1 field is recorded on each recording region. The pieces of image information for right and left eyes to be reproduced at the same time in the same field are recorded in parallel in the recording regions which are next adjacent to each other in a radial direction of the stereoscopic video disc record.
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Hioki Toshiaki
Isono Haruo
Morita Yoshihiko
Toyama Tateo
Watanabe Hiroshi
Nippon Hoso Kyokai
Richardson Robert L.
Sanyo Electric Co,. Ltd.
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