GB1302506A - - Google Patents
Info
- Publication number
- GB1302506A GB1302506A GB3292071A GB3292071A GB1302506A GB 1302506 A GB1302506 A GB 1302506A GB 3292071 A GB3292071 A GB 3292071A GB 3292071 A GB3292071 A GB 3292071A GB 1302506 A GB1302506 A GB 1302506A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electrode
- matrix
- cathode
- voltages
- 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
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
- 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
- G09G1/20—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 multi-beam tubes
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Controls And Circuits For Display Device (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
1302506 Cathode-ray tube displays ISE ELECTRONICS CORP 14 July 1971 [16 July 1970] 32920/71 Heading H4T Patterns, e.g., alpha-numeric characters, are displayed on a cathode-ray tube 12 (Fig. 1) by selective control of an apertured matrix electrode 12c, 12d positioned in the electron stream from the cathode 12a and may be selectively enlarged or reduced by controlling the voltages on the focusing electrode 12f and the grid electrode 12e uniformity of display brightness being maintained when the size is changed by controlling the voltage on the first grid electrode 12b. The position of each character is determined by stepped voltage waveforms supplied to the deflection windings 12g and the spacing between adjacent characters and between successive lines of characters is varied in accordance with the change in character size to prevent overlapping (Fig. 7). The system is controlled by signals from, (e.g. a computer) memory 1 the decoded output of which selects a particular pattern memory 4 such as the diode matrix 4 (Fig. 2) concerned in the display of the numeral "2" (Fig. 3) and also provides the various electrode voltages for the tube 12 to effect the controls referred to above. The diode matrix 4 is connected to the beam controlling aperture matrix electrodes 12c, 12d as shown at 14 (Fig. 2) and "scanned" by successive pulses from counter 5 applied to inputs 17-21 to provide the condition required to allow the electron stream to pass through the appropriate intersections of the X and Y elements of the matrix which are required to produce the display, in this case the numeral "2". The D/A converters 7, 8 and 9 may be replaced by circuits which produce the required electrode voltages by including a single D/A converter in the common input from decoder 3 (Fig. 8, not shown). The whole system is controlled by clock pulse generator 6.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6197670 | 1970-07-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1302506A true GB1302506A (en) | 1973-01-10 |
Family
ID=13186704
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3292071A Expired GB1302506A (en) | 1970-07-16 | 1971-07-14 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3735388A (en) |
CA (1) | CA938694A (en) |
FR (1) | FR2101754A5 (en) |
GB (1) | GB1302506A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2513059C3 (en) * | 1975-03-25 | 1978-04-20 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Character generator for displaying characters |
GB1581546A (en) * | 1976-07-08 | 1980-12-17 | Xenotron Ltd | Compression and expansion of scanned images |
DE3364140D1 (en) * | 1983-03-15 | 1986-07-24 | Itt Ind Gmbh Deutsche | Television receiver with an automatic digital adjustment system |
JP3394312B2 (en) * | 1994-02-28 | 2003-04-07 | 富士通株式会社 | Drawing device |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140473A (en) * | 1956-12-24 | 1964-07-07 | Ibm | Information storage system |
US3168679A (en) * | 1961-05-08 | 1965-02-02 | Tektronix Inc | Intensity control compensation circuit for use in a cathode ray oscilloscope |
GB1110403A (en) * | 1964-05-07 | 1968-04-18 | Rank Organisation Ltd | Improvements in or relating to electric discharge tubes |
US3331985A (en) * | 1964-07-17 | 1967-07-18 | Stromberg Carlson Corp | Character generating system utilizing a cathode ray tube in which a portion of a plurality of electron beams are selectively defocussed to form the character |
US3421044A (en) * | 1967-04-21 | 1969-01-07 | Stromberg Carlson Corp | Method and means for selecting character inclination in cathode ray tube displays |
-
1971
- 1971-07-13 US US00162156A patent/US3735388A/en not_active Expired - Lifetime
- 1971-07-14 GB GB3292071A patent/GB1302506A/en not_active Expired
- 1971-07-15 CA CA118339A patent/CA938694A/en not_active Expired
- 1971-07-15 FR FR7125974A patent/FR2101754A5/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE2135460B2 (en) | 1974-01-03 |
US3735388A (en) | 1973-05-22 |
FR2101754A5 (en) | 1972-03-31 |
DE2135460A1 (en) | 1972-01-20 |
CA938694A (en) | 1973-12-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |