GB1416226A - Generation of dot matrix characters on a television display - Google Patents

Generation of dot matrix characters on a television display

Info

Publication number
GB1416226A
GB1416226A GB2460073A GB2460073A GB1416226A GB 1416226 A GB1416226 A GB 1416226A GB 2460073 A GB2460073 A GB 2460073A GB 2460073 A GB2460073 A GB 2460073A GB 1416226 A GB1416226 A GB 1416226A
Authority
GB
United Kingdom
Prior art keywords
dot
dot matrix
generation
hand side
respect
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2460073A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by British Broadcasting Corp filed Critical British Broadcasting Corp
Priority to GB2460073A priority Critical patent/GB1416226A/en
Publication of GB1416226A publication Critical patent/GB1416226A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/22—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of characters or indicia using display control signals derived from coded signals representing the characters or indicia, e.g. with a character-code memory
    • G09G5/24—Generation of individual character patterns
    • G09G5/28—Generation of individual character patterns for enhancement of character form, e.g. smoothing

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

1416226 Cathode - ray tube displays BRITISH BROADCASTING CORP 23 May 1974 [23 May 1973] 24600/73 Heading H4T In a dot-matrix character display system in which characters are produced by intensification of an interlaced line raster on a cathoderay tube as shown in Fig. 1(a) in respect of the character S in a 7 x 5 dot matrix, the coarsely serrated edges of diagonal parts, which lead to a visually noticeable reduction in brightness, are " smoothed " by " filling-in " with additional half-dot duration brightnened elements such as shown hatched at 10, 10 and 11, 11, Fig. 1(b), in respect of the diagonals sloping upwardly to the right hand side and to the left hand side respectively. Logic circuits for carrying out the invention are described with reference to Figs. 4 and 5 (neither shown).
GB2460073A 1973-05-23 1973-05-23 Generation of dot matrix characters on a television display Expired GB1416226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2460073A GB1416226A (en) 1973-05-23 1973-05-23 Generation of dot matrix characters on a television display

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2460073A GB1416226A (en) 1973-05-23 1973-05-23 Generation of dot matrix characters on a television display

Publications (1)

Publication Number Publication Date
GB1416226A true GB1416226A (en) 1975-12-03

Family

ID=10214208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2460073A Expired GB1416226A (en) 1973-05-23 1973-05-23 Generation of dot matrix characters on a television display

Country Status (1)

Country Link
GB (1) GB1416226A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296228A1 (en) * 1974-12-28 1976-07-23 Seikosha Kk CAMERA SHAPING A CHARACTER BY DISPLAYING SEPARATE IMAGES
FR2515847A1 (en) * 1981-10-29 1983-05-06 Nippon Telegraph & Telephone SMOOTHING CIRCUIT, IN PARTICULAR FOR A DISPLAY APPARATUS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296228A1 (en) * 1974-12-28 1976-07-23 Seikosha Kk CAMERA SHAPING A CHARACTER BY DISPLAYING SEPARATE IMAGES
FR2515847A1 (en) * 1981-10-29 1983-05-06 Nippon Telegraph & Telephone SMOOTHING CIRCUIT, IN PARTICULAR FOR A DISPLAY APPARATUS

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee