GB1300484A - A circuit arrangement for the presentation of waveforms on viewing screens with raster deflection - Google Patents

A circuit arrangement for the presentation of waveforms on viewing screens with raster deflection

Info

Publication number
GB1300484A
GB1300484A GB5499370A GB5499370A GB1300484A GB 1300484 A GB1300484 A GB 1300484A GB 5499370 A GB5499370 A GB 5499370A GB 5499370 A GB5499370 A GB 5499370A GB 1300484 A GB1300484 A GB 1300484A
Authority
GB
United Kingdom
Prior art keywords
scan
memory
bright
data
display
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
GB5499370A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric 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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1300484A publication Critical patent/GB1300484A/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
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/42—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of patterns using a display memory without fixed position correspondence between the display memory contents and the display position on the screen
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R13/00—Arrangements for displaying electric variables or waveforms
    • G01R13/20—Cathode-ray oscilloscopes
    • G01R13/22—Circuits therefor
    • G01R13/34—Circuits for representing a single waveform by sampling, e.g. for very high frequencies
    • G01R13/345—Circuits for representing a single waveform by sampling, e.g. for very high frequencies for displaying sampled signals by using digital processors by intermediate A.D. and D.A. convertors (control circuits for CRT indicators)
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G1/00—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data
    • G09G1/06—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows
    • G09G1/14—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible
    • G09G1/16—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster
    • G09G1/162—Control arrangements or circuits, of interest only in connection with cathode-ray tube indicators; General aspects or details, e.g. selection emphasis on particular characters, dashed line or dotted line generation; Preprocessing of data using single beam tubes, e.g. three-dimensional or perspective representation, rotation or translation of display pattern, hidden lines, shadows the beam tracing a pattern independent of the information to be displayed, this latter determining the parts of the pattern rendered respectively visible and invisible the pattern of rectangular co-ordinates extending over the whole area of the screen, i.e. television type raster for displaying digital inputs as analog magnitudes, e.g. curves, bar graphs, coordinate axes, singly or in combination with alpha-numeric characters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Theoretical Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Image Generation (AREA)

Abstract

1300484 Cathode-ray tube display INTERNATIONAL STANDARD ELECTRIC CORP 19 Nov 1970 [27 Nov 1969] 54993/70 Heading H4T An arrangement for generating bright-up signals for a mixed display of graphs and alphanumeric characters (for example for data on hospital patients) for a T.V. type raster scan comprises a memory 1 and register 3 which receives numerical and character data from a computer, a memory 5 and symbol generator 7 for producing under control of unit 4 the bright-up signals for the characters to be displaced, and a system (enclosed in broken lines) for generating the graphical bright-up pulses for adding to the character signals in mixer 8. As described each graph is specified by eighty points spaced equally along the X (line) scan, the Y values of these points each being represented by a 7-bit code so that 80 7-bit words are supplied to and held in memory 6 for as many horizontal line scans as are required for the graphical display of this data (a number of graphs may be displayed one under another). These 7-bit words are read out at the appropriate point of each scan and held in calculator 9, where an interpolation between successive ordinate values is carried out. This is done by calculating the increment by subtraction, dividing by eight (by a 3-bit shift) and adding this eighth eight times as the line scan travels over one-eightieth of the graph length. The result of this calculation is continuously compared with the vertical position derived from the line scan count to produce bright-up pulses at equality; or when the inequality changes. This process continues until the scan reaches an area for display of another graph, when new ordinate data replaces that held in memory 6. In a modification increment of the ordinate values are supplied from the computer instead of their absolute values, these increments being devided by eight and accumulated in the manner described above.
GB5499370A 1969-11-27 1970-11-19 A circuit arrangement for the presentation of waveforms on viewing screens with raster deflection Expired GB1300484A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1629669A SE343967B (en) 1969-11-27 1969-11-27

Publications (1)

Publication Number Publication Date
GB1300484A true GB1300484A (en) 1972-12-20

Family

ID=20302014

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5499370A Expired GB1300484A (en) 1969-11-27 1970-11-19 A circuit arrangement for the presentation of waveforms on viewing screens with raster deflection

Country Status (6)

Country Link
BE (1) BE759505A (en)
DE (1) DE2057553A1 (en)
FR (1) FR2072449A5 (en)
GB (1) GB1300484A (en)
NO (1) NO127993B (en)
SE (1) SE343967B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30785E (en) 1975-02-27 1981-10-27 Zentec Corporation Microcomputer terminal system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2544489C3 (en) * 1975-10-04 1981-05-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Method for displaying several series of measured values on a display device operating according to the line raster method
DE19940434B4 (en) * 1999-08-26 2007-12-27 Willtek Communications Gmbh Device and method for displaying signal values

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE30785E (en) 1975-02-27 1981-10-27 Zentec Corporation Microcomputer terminal system

Also Published As

Publication number Publication date
DE2057553A1 (en) 1971-06-03
SE343967B (en) 1972-03-20
FR2072449A5 (en) 1971-09-24
BE759505A (en) 1971-05-27
NO127993B (en) 1973-09-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees