US3811007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Facsimile method and apparatus
Assignee: Tektronix Inc
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Filing: 1971-11-11
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Granted: 1974-05-14
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Expires: 1991-11-11
Abstract
Abstract A hard copy of a refreshed computer terminal cathode ray tube display raster is produced on light sensitive paper by scanning the moving paper in the direction of paper movement employing a second cathode ray tube. Scans in the direction of paper movement are short and represent aligned segments of the original raster, this information being received at the scanning rate of a first tube and stored for readout onto the sensitive paper at a slower rate between reception of the aforementioned segments.
Inventors
- 👤 P Unger
- 👤 H Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:33
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/12; H04N1/126; H04N1/127; G; G01; G01R; G01R13/00; G01R13/20; G01R13/204; G09; G09G; G09G1/00; G09G1/06; G09G1/14; G09G1/16; H04N1/00127; H04N1/00281; H04N1/00283
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
248 words
Apparatus for providing a copy of electronically received input information, said information comprising an electronic input representative of a raster presentation, said apparatus comprising: means for receiving said input information and for successively storing at least first portions of said information separated by longer portions, said first portions corresponding to aligned raster line segments, said storing means comprising shift register means, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with only the stored first portions, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, said scanning means comprising electron beams scanning means, means for producing relative movement between said surface and said scanning means, means for receiving sync pulses related to orthogonal scanning directions of said raster presentation, means for generating clock pulses, first counter means for counting clock pulses during a raster line, second counter means and means for incrementing said second counter means for each raster field, means for comparing the count in said first and second counter means and for generating a strobe output when a substantial comparison is achieved. means for shifting information into said shift register in response to said strobe output, and means for shifting information out of said shift register at a slower rate substantially between strobe outputs and including means for applying the information shifted out of said shift register to said scanning means.
Claim 2
Dependent Claim
248 words
Apparatus for providing a copy of electronically received input information, said information comprising an electronic input representative of a raster presentation, said apparatus comprising: means for receiving said input information and for successively storing at least first portions of said information separated by longer portions, said first portions corresponding to aligned raster line segments, said storing means comprising shift register means, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with only the stored first portions, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, said scanning means comprising electron beams scanning means, means for producing relative movement between said surface and said scanning means, means for receiving sync pulses related to orthogonal scanning directions of said raster presentation, means for generating clock pulses, first counter means for counting clock pulses during a raster line, second counter means and means for incrementing said second counter means for each raster field, means for comparing the count in said first and second counter means and for generating a strobe output when a substantial comparison is achieved. means for shifting information into said shift register in response to said strobe output, and means for shifting information out of said shift register at a slower rate substantially between strobe outputs and including means for applying the information shifted out of said shift register to said scanning means.
Claim 3
Dependent Claim
101 words
The apparatus according to claim 1 wherein said scanning means comprises a cathode ray tube havinG a faceplate adjacent said surface with a long dimension extending across said surface and a short dimension in the direction of relative movement, said cathode ray tube having first deflection means for deflecting the electron beam thereon in a first direction across the short dimension of the faceplate as information is shifted out of said shift register, and scanning means for scanning said electron beam along the long dimension of said faceplate between sync pulses indicative of the start and finish of a raster field.
Claim 4
Dependent Claim
192 words
Apparatus for providing a copy of electronically received input information comprising: means for receiving said input information and for successively storing at least first portions of said information separated by longer portions, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with only the stored first portions, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, means for producing relative movement between said surface and said scanning means, said storing means comprising a shift register including means for shifting said information into said shift register at a first rate as said information is received and means for shifting information on out of said shift register and controlling said scanning means therewith at a slower rate between the times when information is stored, additional shift registers and means for encoding the amplitude level of said information according to a binary code, separate shift registers representing separate binary digits of said binary code, and digital-to-anglog converter means interposed between the output of said shift registers and said scanning means.
Claim 5
Dependent Claim
192 words
Apparatus for providing a copy of electronically received input information comprising: means for receiving said input information and for successively storing at least first portions of said information separated by longer portions, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with only the stored first portions, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, means for producing relative movement between said surface and said scanning means, said storing means comprising a shift register including means for shifting said information into said shift register at a first rate as said information is received and means for shifting information on out of said shift register and controlling said scanning means therewith at a slower rate between the times when information is stored, additional shift registers and means for encoding the amplitude level of said information according to a binary code, separate shift registers representing separate binary digits of said binary code, and digital-to-anglog converter means interposed between the output of said shift registers and said scanning means.
Claim 6
Independent Claim
219 words
The method of producing a substantially permanent copy of input information on an image-receiving surface wherein he input information corresponds to an input raster including successive lines of information, said method comprising: receiving, at a given rate, the input information corresponding to successive raster lines, successively storing first portions of said received information, wherein said portions stored comprise raster line segments, each segment being of such length as to convey a variation in the value of such input information along such segment, said segments having interrelated locations in successive raster lines, said segments being a smaller proportion of the said raster lines than the remainder thereof not including said segments, and scanning said image-receiving surface at a second and slower rate, while controlling said scanning to provide an image on the image-receiving surface corresponding to the said first portions of stored information without then immediately forming an image corresponding to said remainder to the raster lines, moving said image-receiving surface in the direction of the raster lines, and successively storing further portions comprising raster line segments and scanning said image-receiving surface while controlling the scanning to provide an image corresponding to said further portions of said received information, wherein said further portions are displaced from said first portions along said raster lines corresponding to movement of said image-receiving surface.
Claim 7
Independent Claim
219 words
The method of producing a substantially permanent copy of input information on an image-receiving surface wherein he input information corresponds to an input raster including successive lines of information, said method comprising: receiving, at a given rate, the input information corresponding to successive raster lines, successively storing first portions of said received information, wherein said portions stored comprise raster line segments, each segment being of such length as to convey a variation in the value of such input information along such segment, said segments having interrelated locations in successive raster lines, said segments being a smaller proportion of the said raster lines than the remainder thereof not including said segments, and scanning said image-receiving surface at a second and slower rate, while controlling said scanning to provide an image on the image-receiving surface corresponding to the said first portions of stored information without then immediately forming an image corresponding to said remainder to the raster lines, moving said image-receiving surface in the direction of the raster lines, and successively storing further portions comprising raster line segments and scanning said image-receiving surface while controlling the scanning to provide an image corresponding to said further portions of said received information, wherein said further portions are displaced from said first portions along said raster lines corresponding to movement of said image-receiving surface.
Claim 8
Dependent Claim
29 words
The method according to claim 4 including scanning with an electron beam and controlling the electron beam intensity with information portions comprising raster line segments aligned across the raster.
Claim 9
Dependent Claim
52 words
The method according to claim 4 wherein said raster line segments are relatively longer than the degree of movement of said image-receiving surface before the scanning of said image-receiving surface with said further portions, said further portions having content corresponding to part of said first portions to provide an overlap of information.
Claim 10
Dependent Claim
41 words
The method according to claim 6 including digitally encoding said information comprising said portions of said raster lines, wherein said further portions include part of the digital information of said first portions shifted in digital order, providing the overlap of information.
Claim 11
Dependent Claim
229 words
Apparatus for providing a copy of electronically received input information, said information comprising an electronic input representative of a raster presentation, said apparatus comprising: means for receiving said input information in the form of raster lines and for successively storing first portions of said raster lines corresponding to aligned raster line segments across a raster, each segment being of such length as to convey a variation in the value of such input information along such segment, and wherein each segment comprises a smaller proportion of a raster line than the remainder thereof not including said segment, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with the stored first portions excluding the remainder of said raster lines, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, said scanning being in the direction of said raster lines, means for producing relative movement between said surface and said scanning means in the direction of said raster lines, and means for changing the portions stored by said means for storing in a direction along said raster lines so that said image-receiving surface receives at least partially differing portions of said information corresponding to said raster as relative movement between said surface and said scanning means takes place.
Claim 12
Dependent Claim
229 words
Apparatus for providing a copy of electronically received input information, said information comprising an electronic input representative of a raster presentation, said apparatus comprising: means for receiving said input information in the form of raster lines and for successively storing first portions of said raster lines corresponding to aligned raster line segments across a raster, each segment being of such length as to convey a variation in the value of such input information along such segment, and wherein each segment comprises a smaller proportion of a raster line than the remainder thereof not including said segment, copying apparatus for reproducing information on a surface adapted to provide a permanent copy thereof, including means for scanning locations on said surface with the stored first portions excluding the remainder of said raster lines, at a slower rate than said information was initially received, for successively intercepting points on said surface with the information, said scanning being in the direction of said raster lines, means for producing relative movement between said surface and said scanning means in the direction of said raster lines, and means for changing the portions stored by said means for storing in a direction along said raster lines so that said image-receiving surface receives at least partially differing portions of said information corresponding to said raster as relative movement between said surface and said scanning means takes place.
Claim 13
Dependent Claim
29 words
The apparatus according to claim 8 wherein said scanning means scans a said location after a first portion is stored and between times when said first portions are stored.
Claim 14
Dependent Claim
15 words
The apparatus according to claim 8 wherein said scanning means comprises electron beam scanning means.
Claim 15
Dependent Claim
30 words
The apparatus according to claim 8 wherein the at least partially differing portions include part of said first portions to provide an overlapping presentation for reproducing information on said surface.
Claim 16
Dependent Claim
58 words
The apparatus according to claim 8 wherein said storing means comprises a shift register including means for shifting information into said shift register at a first rate as information is received and means for shifting information out of said shift register and controlling said scanning means therewith at a slower rate between the times when information is stored.
Claim 17
Dependent Claim
100 words
The apparatus according to claim 8 wherein said scanning means comprises a cathode ray tube having a faceplate adjacent said surface with a long dimension extending across said surface and having a short dimension in the direction of said relative movement, said cathode ray tube having a first deflection means for deflecting the electron beam thereof in a first direction across the short dimension of the faceplate to record said segments, and second deflection means for deflecting the electron beam of the cathode ray tube in a second direction along the long dimension of said faceplate during a raster field.
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) | 1977-05-13 | 1977-11-12 | 1978-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-13 | 1981-11-12 | 1982-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-13 | 1985-11-12 | 1986-05-14 | $7700.00 | Window Closed / Lapsed |