Color television display system

• US 4,197,559 A
• Filed: 10/12/1978
• Issued: 04/08/1980
• Est. Priority Date: 10/12/1978
• Status: Expired due to Term

• Current Assignee: William D. Gramling
• Original Assignee: William D. Gramling
• Inventors: Gramling, William D.
• Primary Examiner(s): Murray, Richard
• Application Number:
  US05/950,677
• Time in Patent Office: 544 Days
• Field of Search: 358/58, 358/60, 358/61, 358/62, 358/63, 358/67, 358/69
• US Class Current: 348/743
• CPC Class Codes: H04N 9/31 Projection devices for colour picture display , e.g. using electronic spatial light modulators [ESLM]

Abstract

Means for projecting a color television picture by rotating or otherwise moving a multi-colored filter in front of a monochrome projection tube and detecting the color of the projected light to electronically switch the appropriate color video input to the projection tube.

Claims

1. A color television viewing system comprising:

A light source modulated by a color television signal, a multi-colored filter placed in motion by a free-running, random speed power source, said multi-colored filter in close frontal proximity to said light source, photo sensors sampling filter-colored light emerging from said light source for purpose of switching appropriate video signal into said modulated light source.

2. Means in accordance with claim 1 wherein said light-emitting display device is a cathode ray tube.

3. Means in accordance with claim 1 wherein said light-emitting display device is a mechanical scanner.

4. Means in accordance with claim 1 wherein said light is emerging from a television cathode ray tube.