Character generator utilizing a display with photochromic layer
阅读：900发布：2024-02-09
专利汇可以提供Character generator utilizing a display with photochromic layer专利检索，专利查询，专利分析的服务。并且A photochromic cathode ray storage tube and means for optically projecting onto the photochromic screen of said tube any one of a number of different fonts. Any character in the font subsequently may be read out and displayed by scanning the electron beam of the storage tube over the portion of the screen storing the character, sensing the light produced during the scanning, and intensity modulating the screen of a display means, such as a concurrently scanned display kinescope, in response to the light which is sensed. The location and size of the area of the display means at which the character is to be displayed may readily be controlled. The font may easily be changed by erasing the one stored and then optically projecting a new font onto the same photochromic screen.，下面是Character generator utilizing a display with photochromic layer专利的具体信息内容。
1. In combination: a display device having a phosphor face and a photochromic layer deposited thereon; means for concurrently applying the characters of one character font of a plurality of different character fonts to said photochromic layer; and means for reading selected ones of said applied characters.
2. A character generator comprising: 2 cathode ray tube having a phosphor face and a photochromic layer deposited thereon; means for concurrently applying the characters of one character font of a plurality of different character fonts to said photochromic layer; and means for reading selected ones of said applied characters comprising means for raster scanning an electron beam over the selected ones of said applied characters.
3. In combination: a display device having a face on which there are at least two face plate layers, an inner layer comprising material of the type which when excited emits radiant energy in a first frequency band, and an outer layer, which is adjacent to the inner layer comprising material of the type normally in a first condition in which it is capable of transmitting substantial energy in said first frequency band but which changes from said first to a second condition when excited by radiant energy in a second frequency band, said material, when in said second condition, having an absorption frequency in said first frequency band; means for exciting, concurrently a plurality of areas of said outer layer with radiant energy in said second frequency band, whereby the plurality of areas change to said second condition; and means for selectively exciting particular ones of said areas of said inner layer, the selectively excited areas thereby emitting radiant energy in said first frequency band which is transmitted through any area of the outer layer adjacent to an excited area of said inner layer which is in said first condition and is substantially absorbed in any area of said outer layer adjacent to an excited area of said inner layer which is in said second condition.
4. In combination: a storage device having a face on which the inner layer is a phosphor which emits radiant energy in a first frequency band of interest when excited and an outer layer, which is face-to-face with the inner layer, comprising a photochromic material initially transparent which becomes colored in response to radiant energy in a second frequency band of interest, the last-named radiant energy inducing in the colored area, an absorption frequency in said first frequency band of interest; a plurality of masks, each mask comprising a plurality of characters and symbols; means for projecting radiant energy in said second frequency band of interest through solely one of said plurality of masks for concurrently causing the characters and symbols contained therein to be stored on said photochromic layer; and means for selectively reading the characters and symbols stored on said photochromic layer.
5. The combination claimed in claim 4, the means for selectively reading comprising means for exciting said phosphor whereby said phosphor emits radiant energy in said first frequency band of interest, which is absorbed in the colored area and transmitted through the transparent area of said outer layer.
6. The combination claimed in claim 5, including means responsive to the radiant energy transmitted through said outer layer for producing an electrical signal.
7. In combination: a storage device having a face on which the inner layer is a phosphor which emits radiant energy in a first frequency band of interest when excited and an outer layer deposited on the inner layer, which comprises a photochromic material, initially transparent but which becomes colored in response to radiant energy in a second frequency band of interest, inducing in the colored area an absorption frequency in the first frequency band of interest; a plurality of masks, each mask comprising a plurality of characters and symbols; means for projecting radiant energy in said second frequency band of interest through one of said plurality of masks and onto said photochromic layer for concurrently coloring selected areas of said photochromic layer whereby the characters and symbols of said one mask are stored on said photochromic layer; and means including said phosphor for selectively reading the stored characters and symbols.
8. A character generator whose font of characters quickly can be changed comprising, in combination: a storage type cathode ray tube formed with a face capable of optically storing a font optically projected thereon and including means for raster scanning the electron beam thereof over any character stored in the font; a plurality of masks formed with different fonts; means for projecting light through the one of said masks having a desired font onto said face for causing said font to be stored; and light sensing means for receiving light from said face when a character in the font stored in said face is raster scanned by said electron beam.
9. The combination claimed in Claim 8, including a second cathode ray tube whose raster scanning electron beam is synchronized with the raster scanning electron beam of said storage type cathode ray tube; and means responsive to the sensing of light by said light sensing means for modulating said second cathode ray tube''s electron beam.
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