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GB526032A - Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes - Google Patents

Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes

Info

Publication number
GB526032A
GB526032A GB7004/39A GB700439A GB526032A GB 526032 A GB526032 A GB 526032A GB 7004/39 A GB7004/39 A GB 7004/39A GB 700439 A GB700439 A GB 700439A GB 526032 A GB526032 A GB 526032A
Authority
GB
United Kingdom
Prior art keywords
saw
inductance
condenser
voltage
tooth
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
GB7004/39A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB526032A publication Critical patent/GB526032A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/237—Distortion correction, e.g. for pincushion distortion correction, S-correction using passive elements, e.g. diodes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/22—Circuits for controlling dimensions, shape or centering of picture on screen
    • H04N3/23—Distortion correction, e.g. for pincushion distortion correction, S-correction
    • H04N3/233—Distortion correction, e.g. for pincushion distortion correction, S-correction using active elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Details Of Television Scanning (AREA)

Abstract

526,032. Television ; valve generating circuits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. March 3, 1939, No. 7004. Convention date, March 3, 1938. Addition to 483,999. [Classes 40 (iii) and 40 (v)] The parent Specification relates to a saw-tooth line-frequency current generator comprising an inductance 11 associated with a capacity, preferably its distributed capacity, to which is applied a saw-tooth voltage at frame frequency so as to produce the required lengthening or shortening of the lines for a trapezoidal scanned area. The saw-tooth voltage of frame frequency may be generated across a condenser 15 associated with a rectifier 12 across the inductance 11. According to the present invention, the inductance 11 is coupled by a transformer 14 to the output circuit of valve 10, to the inner grid of which are applied line frequency impulses and to the screen grid of which is applied the saw-tooth voltage of frame frequency. This voltage may be derived from a resistance 17 in series with condenser 15, so that it is dependent upon the condenser current. Specification 525,680 also is referred to.
GB7004/39A 1935-10-29 1939-03-03 Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes Expired GB526032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET45919D DE756012C (en) 1935-10-29 1935-10-29 Circuit arrangement for generating line saw tooth current curves for a trapezoidal deflection

Publications (1)

Publication Number Publication Date
GB526032A true GB526032A (en) 1940-09-10

Family

ID=25944448

Family Applications (2)

Application Number Title Priority Date Filing Date
GB29332/36D Expired GB483999A (en) 1935-10-29 1936-10-28 Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes
GB7004/39A Expired GB526032A (en) 1935-10-29 1939-03-03 Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB29332/36D Expired GB483999A (en) 1935-10-29 1936-10-28 Improvements in or relating to circuits for generating deflecting waveforms for cathode ray tubes

Country Status (5)

Country Link
US (1) US2227480A (en)
DE (3) DE756012C (en)
FR (1) FR837823A (en)
GB (2) GB483999A (en)
NL (1) NL49156C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2571131A (en) * 1946-01-21 1951-10-16 Farnsworth Res Corp Sweep circuit
US2543428A (en) * 1947-02-25 1951-02-27 Rca Corp Direct-current transfer system
BE491135A (en) * 1948-09-21
US3015741A (en) * 1959-06-22 1962-01-02 Gen Dynamics Corp Pulse shaping circuitry

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE21400E (en) * 1932-04-04 1940-03-19 blumlein
US2040813A (en) * 1932-09-30 1936-05-12 Rca Corp Television system
GB443952A (en) * 1934-07-04 1936-03-04 Michael Bowman Manifold Improvements in and relating to electrical circuits for the deflection of cathode ray beams

Also Published As

Publication number Publication date
DE756012C (en) 1953-03-16
US2227480A (en) 1941-01-07
NL49156C (en) 1940-09-16
FR837823A (en) 1939-02-21
GB483999A (en) 1938-04-28
DE909105C (en) 1954-04-12
DE893347C (en) 1953-10-15

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