ES374114A1 - Improvements Relating to Colour Television Receivers - Google Patents
Improvements Relating to Colour Television ReceiversInfo
- Publication number
- ES374114A1 ES374114A1 ES374114A ES374114A ES374114A1 ES 374114 A1 ES374114 A1 ES 374114A1 ES 374114 A ES374114 A ES 374114A ES 374114 A ES374114 A ES 374114A ES 374114 A1 ES374114 A1 ES 374114A1
- Authority
- ES
- Spain
- Prior art keywords
- red
- potentiometer
- green
- blue
- guns
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/16—Picture reproducers using cathode ray tubes
- H04N9/18—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals
- H04N9/20—Picture reproducers using cathode ray tubes using separate electron beams for the primary colour signals with more than one beam in a tube
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Processing Of Color Television Signals (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Relates to apparatus for increasing the proportion of either red or blue in the displayed picture of a tri-gun colour television tube while leaving at least the green substantially unaffected, said apparatus comprising means for altering the D.C. voltage level applied to the red or blue guns without affecting that applied to the green gun, said three guns being supplied by a common D.C. voltage generator. As shown in Fig. 1 the apparatus comprises a resistance network, terminal 10 being connected to the output of the high-tension D.C. voltage generator and terminals 23, 24 and 25 being connected to the first anodes of the green, red and blue guns respectively. Since the potentiometer 20 is arranged to have a very much higher resistance than that of resistors 12 and 13, movement of the slider of this potentiometer, for example to the left, will cause the potential at point A to increase very much more than the corresponding decrease at point C. Hence movement to the left causes the first anode potential of the red tube to increase without substantially affecting that of the green and blue tubes. Fig. 2 (not shown) illustrates an alternative arrangement in which a centre-tapped potentiometer is employed in place of potentiometer 20.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5713468A GB1195757A (en) | 1968-12-02 | 1968-12-02 | Improvements Relating to Colour Television Receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES374114A1 true ES374114A1 (en) | 1972-03-16 |
Family
ID=10478450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES374114A Expired ES374114A1 (en) | 1968-12-02 | 1969-12-01 | Improvements Relating to Colour Television Receivers |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH502039A (en) |
| DE (1) | DE1960229B2 (en) |
| ES (1) | ES374114A1 (en) |
| GB (1) | GB1195757A (en) |
| SE (1) | SE346449B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS567348B2 (en) * | 1973-04-25 | 1981-02-17 | ||
| US3967314A (en) * | 1975-09-19 | 1976-06-29 | Oneida Electronics | Color brightness control |
| GB2057826B (en) * | 1979-08-31 | 1983-01-12 | Ibm | Multibeam cathode ray tube apparatus |
| US5799551A (en) * | 1997-03-18 | 1998-09-01 | Impex Handelsgesellschaft Mbh (F.E.) Ltd. | Corkscrew |
-
1968
- 1968-12-02 GB GB5713468A patent/GB1195757A/en not_active Expired
-
1969
- 1969-12-01 ES ES374114A patent/ES374114A1/en not_active Expired
- 1969-12-01 DE DE19691960229 patent/DE1960229B2/en active Pending
- 1969-12-01 SE SE1650369A patent/SE346449B/xx unknown
- 1969-12-02 CH CH1795769A patent/CH502039A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| GB1195757A (en) | 1970-06-24 |
| CH502039A (en) | 1971-01-15 |
| DE1960229B2 (en) | 1972-04-20 |
| DE1960229A1 (en) | 1970-07-09 |
| SE346449B (en) | 1972-07-03 |
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