US3783331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for generating information to control the scanning beam of a display device
Assignee: Times Mirror Co
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Filing: 1970-03-17
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Granted: 1974-01-01
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Expires: 1990-03-17
Abstract
Abstract An enlarged photographic transparency of a print character to be displayed on a cathode ray tube is placed between a directional light source and a directional light detector aligned with the light source. Relative motion is introduced between the transparency and the aligned source and detector to form a vertical rectilinear scanning pattern across the transparency. Each subject print character is placed on the transparency between two reference characters that are in predetermined spatial relationship to the boundaries of the em square of the subject character. A series of binary indications corresponding to the elemental areas of the scanning pattern is produced from the response of the detector and stored on a first storage medium. Then, the indications representing the reference characters are sensed. From the indications representing the reference characters, the indications that represent the boundaries of the em squares of the subject characters are determined. Finally, the indications within the boundaries of the em squares of the subject characters are selectively transferred to a second storage medium. The subject characters are retrieved from the second storage medium as required to control the electron beam of the cathode ray tube.
Inventors
- 👤 J Darnall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:38
CPC Classifications
G; G09; G09G; G09G1/00; G09G1/06; G09G1/14; B; B41; B41B; B41B19/00; B41B19/01
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
152 words
A method for displaying graphic information on the face of a cathode ray tube having an electron beam, the method comprising the steps of: producing the information to be displayed on a photographic transparency by placing a subject print character adjacent to a reference character that is in predetermined spatial relationship to the boundaries of the em square of the subject character; placing the transparency between a point source of light and a point detector of light aligned with each other; introducing relative movement between the transparency and the aligned point source and detector to scan the subject and reference characters on the transparency together; storing the indications of the detector responsive to the scanning of the transparency; and controlling the electron beam of the cathode ray tube responsive to the stored indications so as to reproduce on the face of the cathode ray tube the subject print character on the transparency.
Claim 2
Independent Claim
152 words
A method for displaying graphic information on the face of a cathode ray tube having an electron beam, the method comprising the steps of: producing the information to be displayed on a photographic transparency by placing a subject print character adjacent to a reference character that is in predetermined spatial relationship to the boundaries of the em square of the subject character; placing the transparency between a point source of light and a point detector of light aligned with each other; introducing relative movement between the transparency and the aligned point source and detector to scan the subject and reference characters on the transparency together; storing the indications of the detector responsive to the scanning of the transparency; and controlling the electron beam of the cathode ray tube responsive to the stored indications so as to reproduce on the face of the cathode ray tube the subject print character on the transparency.
Claim 3
Dependent Claim
78 words
The method of claim 1, in which the step of introducing relative movement between the transparency and the aligned point source and detector comprises the steps of: mounting the transparency over a slot on a rotating drum; placing the light source and light detector on opposite sides of the drum; and translating the light source and detector as a unit parallel to the axis of rotation of the drum a discrete distance after each revolution of the drum.
Claim 4
Independent Claim
151 words
A method of generating character information for controlling the electron beam of a cathode ray tube to display on its face print characters, the method comprising the steps of: producing an enlarged photographic transparency of the character to be displayed and reference marks in predetermined spatial relationship to the boundaries of the em square of the character to be displayed; aligning a directional light source and a directional light detector so as to couple light to the detector in the absence of opacity between the source and the detector; introducing relative motion between the transparency and the aligned source and detector so as to scan together the character to be displayed and the reference marks on the transparency; producing binary indications representative of the character and the reference marks responsive to the detector while the transparency is being scanned; and storing the binary indications for the control of the electron beam.
Claim 5
Independent Claim
151 words
A method of generating character information for controlling the electron beam of a cathode ray tube to display on its face print characters, the method comprising the steps of: producing an enlarged photographic transparency of the character to be displayed and reference marks in predetermined spatial relationship to the boundaries of the em square of the character to be displayed; aligning a directional light source and a directional light detector so as to couple light to the detector in the absence of opacity between the source and the detector; introducing relative motion between the transparency and the aligned source and detector so as to scan together the character to be displayed and the reference marks on the transparency; producing binary indications representative of the character and the reference marks responsive to the detector while the transparency is being scanned; and storing the binary indications for the control of the electron beam.
Claim 6
Independent Claim
105 words
A method for generating character information to control the scanning beam of a print character display device, the method comprising the steps of: placing a subject character adjacent to a reference character that is in predetermined spatial relationship to the boundaries of the em square of the subject character; scanning the subject and reference characters together to produce a series of indications corresponding to the elements of scanning pattern; sensing the indications representing the reference character; determining which indications represent the boundaries of the em square of the subject character from the indications representing the reference character; and storing the indications representing the subject character.
Claim 7
Independent Claim
105 words
A method for generating character information to control the scanning beam of a print character display device, the method comprising the steps of: placing a subject character adjacent to a reference character that is in predetermined spatial relationship to the boundaries of the em square of the subject character; scanning the subject and reference characters together to produce a series of indications corresponding to the elements of scanning pattern; sensing the indications representing the reference character; determining which indications represent the boundaries of the em square of the subject character from the indications representing the reference character; and storing the indications representing the subject character.
Claim 8
Independent Claim
176 words
A method for generating print character information to control thE beam of a print character display device, the method comprising the steps of: placing a plurality of characters to be generated on a printing medium in their proper spatial relationship to each other; placing on both sides of each character to be generated two reference characters that are in predetermined spatial relationship to the boundaries of the em square of such character to be generated; scanning the reference characters and the characters to be generated together to produce a series of indications corresponding to the elemental areas covered by such scanning; storing the series of indications on a first storage medium; sensing those indications of the series stored on the first medium representing the reference characters; determining from the indications representing the reference characters which indications represent the boundaries of the em square of each character to be generated; and transferring from the first medium to a second storage medium only the indications within the boundaries of the em squares of the characters to be generated.
Claim 9
Independent Claim
176 words
A method for generating print character information to control thE beam of a print character display device, the method comprising the steps of: placing a plurality of characters to be generated on a printing medium in their proper spatial relationship to each other; placing on both sides of each character to be generated two reference characters that are in predetermined spatial relationship to the boundaries of the em square of such character to be generated; scanning the reference characters and the characters to be generated together to produce a series of indications corresponding to the elemental areas covered by such scanning; storing the series of indications on a first storage medium; sensing those indications of the series stored on the first medium representing the reference characters; determining from the indications representing the reference characters which indications represent the boundaries of the em square of each character to be generated; and transferring from the first medium to a second storage medium only the indications within the boundaries of the em squares of the characters to be generated.
Claim 10
Dependent Claim
94 words
The method of claim 5, in which the printing medium comprises an enlarged photographic transparency of the characters to be generated and the reference characters, and the step of scanning the reference characters and the characters to be generated comprises the steps of: mounting the transparency over a slot on a rotating drum; placing the light source and light detector on opposite sides of the drum; and translating the light source and detector as a unit parallel to the axis of rotation of the drum a discrete distance after each revolution of the drum.
Claim 11
Independent Claim
161 words
A method for displaying graphic information on the face of a cathode ray tube having an electron beam, the method comprising the steps of: producing an enlarged photographic transparency of the character to be displayed; mounting the transparency over a slot on a rotating drum; aligning a directional light source and a directional light detector on opposite sides of the drum so as to couple light to the detector in the absence of opacity between the source and the detector; translating the light source and detector as a unit parallel to the axis of rotation of the drum a discrete distance after each revolution of the drum; producing binary indications representative of the character responsive to the detector while the transparency is being scanned; storing the binary indications; and controlling the electron beam of the cathode ray tube responsive to the stored binary indications so as to reproduce on the face of the cathode ray tube the character to be displayed.
Claim 12
Independent Claim
161 words
A method for displaying graphic information on the face of a cathode ray tube having an electron beam, the method comprising the steps of: producing an enlarged photographic transparency of the character to be displayed; mounting the transparency over a slot on a rotating drum; aligning a directional light source and a directional light detector on opposite sides of the drum so as to couple light to the detector in the absence of opacity between the source and the detector; translating the light source and detector as a unit parallel to the axis of rotation of the drum a discrete distance after each revolution of the drum; producing binary indications representative of the character responsive to the detector while the transparency is being scanned; storing the binary indications; and controlling the electron beam of the cathode ray tube responsive to the stored binary indications so as to reproduce on the face of the cathode ray tube the character to be displayed.
Claim 13
Independent Claim
141 words
A method for generating character information to control the scanning beam of a print character display device, the method comprising the steps of: placing a character to be generated on a printing medium; placing on both sides of the character to be generated two unique reference characters that are in predetermined spatial relationship to the boundaries of the em square of the character to be generated; scanning the character to be generated and the reference characters together to produce a series of indications corresponding to the elements of the scan; sensing the indications representing the reference characters; determining from the indications representing the reference characters which indications represent the boundaries of the em square of the character to be generated; and storing the indications representing the character to be generated for the control of the scanning beam of the display device.
Claim 14
Independent Claim
141 words
A method for generating character information to control the scanning beam of a print character display device, the method comprising the steps of: placing a character to be generated on a printing medium; placing on both sides of the character to be generated two unique reference characters that are in predetermined spatial relationship to the boundaries of the em square of the character to be generated; scanning the character to be generated and the reference characters together to produce a series of indications corresponding to the elements of the scan; sensing the indications representing the reference characters; determining from the indications representing the reference characters which indications represent the boundaries of the em square of the character to be generated; and storing the indications representing the character to be generated for the control of the scanning beam of the display device.
Claim 15
Independent Claim
155 words
A method for displaying print characters on the face of a print character display device having a controllable scanning beam, the method comprising the steps of: placing a plurality of subject characters and unique reference characters in a row in proper spatial relationship to one another, reference characters being located at both ends of the row and alternating wIth subject characters between the ends of the row; scanning the subject and reference characters together to produce a series of binary indications corresponding to the elements of the scan; sensing the binary indications representing the reference characters; determining which indications represent the boundaries of the em squares of the subject characters from the binary indications representing the reference characters; storing the binary indications representing the subject characters; and controlling the scanning beam of the display device responsive to the stored binary indications so as to reproduce on the face of the display device the subject characters.
Claim 16
Independent Claim
155 words
A method for displaying print characters on the face of a print character display device having a controllable scanning beam, the method comprising the steps of: placing a plurality of subject characters and unique reference characters in a row in proper spatial relationship to one another, reference characters being located at both ends of the row and alternating wIth subject characters between the ends of the row; scanning the subject and reference characters together to produce a series of binary indications corresponding to the elements of the scan; sensing the binary indications representing the reference characters; determining which indications represent the boundaries of the em squares of the subject characters from the binary indications representing the reference characters; storing the binary indications representing the subject characters; and controlling the scanning beam of the display device responsive to the stored binary indications so as to reproduce on the face of the display device the subject characters.
Claim 17
Dependent Claim
34 words
The method of claim 5, in which one reference character serves to determine in part the boundaries of the em squares of the characters to be generated on both sides of such reference character.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |