Cathode ray tube display system with display location memory
First Claim
1. A multicolor display apparatus comprisinga cathode ray tube having an electron gun for emitting an electron beam and an electron beam activated display screen comprising a plurality of elements,a memory for recording the addresses of locations of such elements on the display screen,address selection circuit means connected to the memory to cause the memory to provide the address of a selected location, andelectron beam deflection means responsive to the output of the memory for deflecting the electron beam to the location having the address specified by the memory output.
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Abstract
A cathode ray tube display system apparatus and method in which a memory stores the addresses necessary to cause the electron beam of a cathode ray tube to impinge upon predetermined locations on the cathode ray tube screen. A single beam electron gun can thus selectively activate different types of phosphors in an array of phosphor locations to produce, for example, a multicolor display. An apparatus and method in which a memory stores addresses necessary to cause images to be projected at predetermined locations in a cathode ray tube projection display system.
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Citations
25 Claims
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1. A multicolor display apparatus comprising
a cathode ray tube having an electron gun for emitting an electron beam and an electron beam activated display screen comprising a plurality of elements, a memory for recording the addresses of locations of such elements on the display screen, address selection circuit means connected to the memory to cause the memory to provide the address of a selected location, and electron beam deflection means responsive to the output of the memory for deflecting the electron beam to the location having the address specified by the memory output.
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7. A display system comprising at least two projection cathode ray tubes, each having an electron gun for emitting an electron beam and an electron beam activated image screen.
a projection display screen, a lens system for projecting images produced by action of the electron beams on the image screens onto the display screen, a memory for recording the address of each of a plurality of locations on the display screen, each corresponding to a position on the image screens of a plurality of the cathode ray tubes, address selection means connected to the memory to provide the address of a selected location, and electron beam deflection means responsive to the output of the memory for deflecting one of the electron beams to the position on an image screen corresponding to the display screen location specified by the memory output.
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12. A method for displaying information on a cathode ray tube having an electron gun for emitting an electron beam and an electron beam activated display screen comprising a plurality of elements, comprising:
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activating a memory into which has been recorded the adresses of locations of such elements on the display screen, the activated memory in response providing the address of a selected location, emitting the electron beam from the electron gun within the cathode ray tube toward the display screen, and deflecting the electron beam to the selected location having the address specified by the memory output, in response to the output of the memory. - View Dependent Claims (13, 14, 15, 18)
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16. A method for displaying information on a projection display screen with at least two projection cathode ray tubes, each tube having an electron gun for emitting an electron beam and an electron beam activated image screen comprising:
- focusing the image on the image screen of each of the cathode ray tubes onto at least a portion of the display screen;
activating a memory into which has been recorded the address of a plurality of locations on the display screen, the activated memory in response providing the address of a selected location; emitting the electron beam from an electron gun within cathode ray tube toward its image screen, and deflecting the electron beam to impinge upon the image screen of its cathode ray tube thereby producing light at a location on the display screen having the address specified by the memory output wherein light is focused on at least some of the locations on the display screen by the image screens of two or more cathode ray tubes.
- focusing the image on the image screen of each of the cathode ray tubes onto at least a portion of the display screen;
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19. A display apparatus comprising
a cathode ray tube having an electron gun for emitting an electron beam, and a display screen comprising a plurality of interspersed elements of electron-activated phosphors of two or more different light-emitting types, a memory for recording the addresses of locations of such elements on the display screen, address selection circuit means connected to the memory to cause the memory to provide the address of a selected location, and electron beam deflection means responsive to the output of the memory for deflecting the electron beam to the location having the address specified by the memory output.
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23. A method for displaying information on a cathode ray tube having an electron gun for emitting an electron beam, and an electron beam activated display screen comprising a plurality of interspersed elements of electron-activated phosphors of two or more light-emitting types, comprising:
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activating a memory into which has been recorded the addresses of locations of such elements on the display screen, the activated memory in response providing the address of a selected location, emitting the electron beam from the electron gun within the cathode ray tube toward the display screen, and deflecting the electron beam to the selected location having the address specified by the memory output, in response to the output of the memory. - View Dependent Claims (24, 25)
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Specification