US3944738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method to increase the visibility of game objects during telecasting
Assignee: 3M Co
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Filing: 1973-12-11
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Granted: 1976-03-16
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Expires: 1993-12-11
Abstract
Abstract A method for enhancing the visibility on a television screen of small difficult-to-see game objects that are thrown or shot according to the rules of the game. The method comprises photographing the game while the game object that is being used in the game carries a retroreflective layer attached to the exterior surface of the object; and projecting a light beam parallel to the optical axis of said television camera so that light retroreflected by said retroreflective layer causes a visible contrast between the image of the game object and the image of the background for the object in a telecast picture.
Inventors
- 👤 James William Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:58
CPC Classifications
A; A63; A63B; A63B67/00; A63B67/14; A63B71/00; H; H04; H04N; H04N5/00; H04N5/30; A63B2225/00; A63B2225/76
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
159 words
A method for enhancing the visibility on a television screen of small, difficult-to-see objects that are shot or thrown according to the rules of a telecast game, comprising: 1. photographing the game with at least one television camera while the said object that is used in the game carries at least one retroreflective layer attached to the exterior surface of the object; 2. projecting toward the game a light beam that is substantially parallel to, and no more than slightly spaced from, the optical axis of said television camera, so that the lens of the camera will be within the cone of light from the light beam that is retroreflected by the retroreflective layer carried on said object; and 3. telecasting the picture photographed by the camera; whereby there is a visible contrast between the image of the object and the image of the background for the object on the screen of television receivers that receive the telecast picture.
Claim 2
Independent Claim
159 words
A method for enhancing the visibility on a television screen of small, difficult-to-see objects that are shot or thrown according to the rules of a telecast game, comprising: 1. photographing the game with at least one television camera while the said object that is used in the game carries at least one retroreflective layer attached to the exterior surface of the object; 2. projecting toward the game a light beam that is substantially parallel to, and no more than slightly spaced from, the optical axis of said television camera, so that the lens of the camera will be within the cone of light from the light beam that is retroreflected by the retroreflective layer carried on said object; and 3. telecasting the picture photographed by the camera; whereby there is a visible contrast between the image of the object and the image of the background for the object on the screen of television receivers that receive the telecast picture.
Claim 3
Dependent Claim
20 words
A method of claim 1 in which the light beam is projected by a lamp affixed to said television camera.
Claim 4
Independent Claim
57 words
A method for enhancing the visibility of a hockey puck on a television screen during telecasting of a hockey match comprising: 1. photographing the hockey match with at least one television camera while the hockey puck that is being used in the match carries at least one retroreflective layer attached to the exterior surface of the puck;
Claim 5
Independent Claim
57 words
A method for enhancing the visibility of a hockey puck on a television screen during telecasting of a hockey match comprising: 1. photographing the hockey match with at least one television camera while the hockey puck that is being used in the match carries at least one retroreflective layer attached to the exterior surface of the puck;
Claim 6
Dependent Claim
99 words
projecting toward the hockey match a light beam that is substantially parallel to, and no more than slightly spaced from, the optical axis of said television camera, so that the lens of the camera will be within the cone of light from said light beam that is retroreflected by the retroreflective layer carried on said hockey puck; and 3. telecasting the picture photographed by the camera; whereby there is a visible contrast between the image of the hockey puck and the image of the background for the puck on the screen of television receivers that receive the telecast picture.
Claim 7
Dependent Claim
99 words
projecting toward the hockey match a light beam that is substantially parallel to, and no more than slightly spaced from, the optical axis of said television camera, so that the lens of the camera will be within the cone of light from said light beam that is retroreflected by the retroreflective layer carried on said hockey puck; and 3. telecasting the picture photographed by the camera; whereby there is a visible contrast between the image of the hockey puck and the image of the background for the puck on the screen of television receivers that receive the telecast picture.
Claim 8
Dependent Claim
20 words
A method of claim 3 in which the light beam is projected by a lamp affixed to said television camera.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-16 | 1979-09-15 | 1980-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-16 | 1983-09-15 | 1984-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-16 | 1987-09-15 | 1988-03-16 | $7700.00 | Window Closed / Lapsed |