GB2140647A - 3D-Television system - Google Patents

3D-Television system Download PDF

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Publication number
GB2140647A
GB2140647A GB08405957A GB8405957A GB2140647A GB 2140647 A GB2140647 A GB 2140647A GB 08405957 A GB08405957 A GB 08405957A GB 8405957 A GB8405957 A GB 8405957A GB 2140647 A GB2140647 A GB 2140647A
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GB
United Kingdom
Prior art keywords
images
eye
colour
television system
television
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB08405957A
Other versions
GB8405957D0 (en
GB2140647B (en
Inventor
Alan Bennett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB838314589A external-priority patent/GB8314589D0/en
Application filed by Individual filed Critical Individual
Priority to GB08405957A priority Critical patent/GB2140647B/en
Publication of GB8405957D0 publication Critical patent/GB8405957D0/en
Publication of GB2140647A publication Critical patent/GB2140647A/en
Application granted granted Critical
Publication of GB2140647B publication Critical patent/GB2140647B/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/332—Displays for viewing with the aid of special glasses or head-mounted displays [HMD]
    • H04N13/334—Displays for viewing with the aid of special glasses or head-mounted displays [HMD] using spectral multiplexing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
    • G02B30/23—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using wavelength separation, e.g. using anaglyph techniques

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Stereoscopic And Panoramic Photography (AREA)

Abstract

Realistic three-dimensional effects are obtained from an ordinary colour television receiver receiving an ordinary broadcast signal by modifying the convergence of the color tube to produce on the screen three laterally displaced images, and viewing the outer images through spectacles with differently coloured lenses.

Description

SPECIFICATION Television System This invention concerns a television system which enables the viewer to experience a realistic three-dimensional effect.
It is well known that a three-dimensional effect may be observed by providing two images of the same subject laterally offset from one another and arranging for one image to be seen by one eye and the other image by the other eye. For a realistic three-dimensional effect the two images will not be identical, having been derived from two cameras laterally spaced to correspond with the spacing of the human eyes.
The present invention is based upon an appreciation of the possibility of obtaining a realistic though simulated three-dimensional effect by observing images which are laterally offset but geometrically identical, derived from an ordinary color video signal derived from a single camera.
According to the present invention there is provided a television system enabling the viewer to experience a realistic three-dimensional effect comprising an ordinary colour television receiver whose convergence is modified to provide three laterally spaced images on the screen from a conventional colour television transmission signal and means enabling the viewer to observe simultaneously one of the outer images with one eye and the other of said outer images with the other eye.
The video signal can be taken from a broadcast television signal or from a video cassette or video disc or the like. The signal from a single, ordinary colour camera can be split into three side-by-side images which, when viewed through lenses or filters appropriately differently coloured for each eye give a three-dimensional or stereoscopic effect as if the images had been produced from a stereoscopic camera arrangement.
Preferably the television receiver will operate conventionally unless modified by actuation of a control switch to obtain the laterally spaced images.
The invention will be further apparent from the following description, which concerns, by way of example only, one form of television system embodying the invention.
The television system comprises a colour television receiver having two sets of circuitry controlling the convergence of the red, blue, and green images on the screen of the receiver. A control switch is provided for selecting which of the two sets of circuitry is to be used.
The first set of circuitry is arranged to achieve proper convergence of the three images enabling the receiver to operate in the conventional manner producing a two-dimensional coloured image.
The second set of circuitry is arranged to split the three images along the x-axis, that is so that the red and green images are laterally spaced from the blue image to the left and right thereof respectively. If a modern Pil (Precision in Line) tube is used, the colours are spaced so that the red and blue images are laterally spaced from the green to the left and right respectively.
The system also includes a pair of viewing spectacles providing a transparent red filter for one eye and a transparent green filter for the other eye. On the (Pil) tube system the colours in the glasses would be changed accordingly. Also varients of coloured lenses may be used.
It will be understood that when a viewer uses the spectacles with the receiver operating in the modified mode, the red image on the screen will be observed by one eye and the green image by the other eye, giving a realistic though simulated three-dimensional effect. Again the colours would be changed for a Pil tube to red and blue. The third colour will automatically converge with the other two.
The system will reproduce three dimensional colour or monochrome pictures or effects depending on the relevant video signal information, i.e. colour or monochrome.
The system will work with any colour set or colour monitor currently available.
It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily-occur to one skilled in the art, being possible, without departing from the scope thereof as defined by the appended claims.
1. A television system enabling the viewer to experience a realistic three-dimensional effect comprising an ordinary colour television receiver of which the convergence is modified to provide three laterally spaced images on the screen from a conventional colour video signal and viewing means enabling the viewer to observe simultaneously one of the outer images with one eye and the other of said outer images with the other eye.
2. A television system according to claim 1, comprising switch means for switching between regular and modified convergence.
3. A television system according to claim 1 or claim 2, said viewing means comprising spectacles having different coloured filters for each eye.
4. A television system according to claim 3, said spectacles having one red filter and one green or blue filter.
5. A television system as hereinbefore described.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (5)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Television System This invention concerns a television system which enables the viewer to experience a realistic three-dimensional effect. It is well known that a three-dimensional effect may be observed by providing two images of the same subject laterally offset from one another and arranging for one image to be seen by one eye and the other image by the other eye. For a realistic three-dimensional effect the two images will not be identical, having been derived from two cameras laterally spaced to correspond with the spacing of the human eyes. The present invention is based upon an appreciation of the possibility of obtaining a realistic though simulated three-dimensional effect by observing images which are laterally offset but geometrically identical, derived from an ordinary color video signal derived from a single camera. According to the present invention there is provided a television system enabling the viewer to experience a realistic three-dimensional effect comprising an ordinary colour television receiver whose convergence is modified to provide three laterally spaced images on the screen from a conventional colour television transmission signal and means enabling the viewer to observe simultaneously one of the outer images with one eye and the other of said outer images with the other eye. The video signal can be taken from a broadcast television signal or from a video cassette or video disc or the like. The signal from a single, ordinary colour camera can be split into three side-by-side images which, when viewed through lenses or filters appropriately differently coloured for each eye give a three-dimensional or stereoscopic effect as if the images had been produced from a stereoscopic camera arrangement. Preferably the television receiver will operate conventionally unless modified by actuation of a control switch to obtain the laterally spaced images. The invention will be further apparent from the following description, which concerns, by way of example only, one form of television system embodying the invention. The television system comprises a colour television receiver having two sets of circuitry controlling the convergence of the red, blue, and green images on the screen of the receiver. A control switch is provided for selecting which of the two sets of circuitry is to be used. The first set of circuitry is arranged to achieve proper convergence of the three images enabling the receiver to operate in the conventional manner producing a two-dimensional coloured image. The second set of circuitry is arranged to split the three images along the x-axis, that is so that the red and green images are laterally spaced from the blue image to the left and right thereof respectively. If a modern Pil (Precision in Line) tube is used, the colours are spaced so that the red and blue images are laterally spaced from the green to the left and right respectively. The system also includes a pair of viewing spectacles providing a transparent red filter for one eye and a transparent green filter for the other eye. On the (Pil) tube system the colours in the glasses would be changed accordingly. Also varients of coloured lenses may be used. It will be understood that when a viewer uses the spectacles with the receiver operating in the modified mode, the red image on the screen will be observed by one eye and the green image by the other eye, giving a realistic though simulated three-dimensional effect. Again the colours would be changed for a Pil tube to red and blue. The third colour will automatically converge with the other two. The system will reproduce three dimensional colour or monochrome pictures or effects depending on the relevant video signal information, i.e. colour or monochrome. The system will work with any colour set or colour monitor currently available. It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily-occur to one skilled in the art, being possible, without departing from the scope thereof as defined by the appended claims. CLAIMS
1. A television system enabling the viewer to experience a realistic three-dimensional effect comprising an ordinary colour television receiver of which the convergence is modified to provide three laterally spaced images on the screen from a conventional colour video signal and viewing means enabling the viewer to observe simultaneously one of the outer images with one eye and the other of said outer images with the other eye.
2. A television system according to claim 1, comprising switch means for switching between regular and modified convergence.
3. A television system according to claim 1 or claim 2, said viewing means comprising spectacles having different coloured filters for each eye.
4. A television system according to claim 3, said spectacles having one red filter and one green or blue filter.
5. A television system as hereinbefore described.
GB08405957A 1983-05-26 1984-03-07 3d-television system Expired GB2140647B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08405957A GB2140647B (en) 1983-05-26 1984-03-07 3d-television system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB838314589A GB8314589D0 (en) 1983-05-26 1983-05-26 Television system
GB08405957A GB2140647B (en) 1983-05-26 1984-03-07 3d-television system

Publications (3)

Publication Number Publication Date
GB8405957D0 GB8405957D0 (en) 1984-04-11
GB2140647A true GB2140647A (en) 1984-11-28
GB2140647B GB2140647B (en) 1986-05-08

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ID=26286239

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08405957A Expired GB2140647B (en) 1983-05-26 1984-03-07 3d-television system

Country Status (1)

Country Link
GB (1) GB2140647B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748822A1 (en) * 1996-05-15 1997-11-21 Perrier Alain Observation system for perspective viewing of projected images
GB2331424A (en) * 1997-11-17 1999-05-19 Jordi Masso Tejeda System for obtaining three-dimensional anagliph-like still photographs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151549A (en) * 1977-12-19 1979-04-24 Jeff Bautze Simulated stereoscopic television projection system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151549A (en) * 1977-12-19 1979-04-24 Jeff Bautze Simulated stereoscopic television projection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748822A1 (en) * 1996-05-15 1997-11-21 Perrier Alain Observation system for perspective viewing of projected images
GB2331424A (en) * 1997-11-17 1999-05-19 Jordi Masso Tejeda System for obtaining three-dimensional anagliph-like still photographs

Also Published As

Publication number Publication date
GB8405957D0 (en) 1984-04-11
GB2140647B (en) 1986-05-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950307