US2903622A - Multi-beam convergence system - Google Patents

Multi-beam convergence system Download PDF

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Publication number
US2903622A
US2903622A US654699A US65469957A US2903622A US 2903622 A US2903622 A US 2903622A US 654699 A US654699 A US 654699A US 65469957 A US65469957 A US 65469957A US 2903622 A US2903622 A US 2903622A
Authority
US
United States
Prior art keywords
convergence
vertical
coils
kinescope
horizontal
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 - Lifetime
Application number
US654699A
Other languages
English (en)
Inventor
James C Schopp
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.)
RCA Corp
Original Assignee
RCA 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
Priority to NL227158D priority Critical patent/NL227158A/xx
Priority to BE566993D priority patent/BE566993A/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US654699A priority patent/US2903622A/en
Priority to GB9914/58A priority patent/GB883692A/en
Priority to DER23054A priority patent/DE1058097B/de
Priority to FR1204608D priority patent/FR1204608A/fr
Application granted granted Critical
Publication of US2903622A publication Critical patent/US2903622A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04N9/28—Arrangements for convergence or focusing

Definitions

  • the current iiowing through the convergence coils 13 to ground may be as represented by the parabolic waveform 62 in Figure 4.
  • the direct current component of this waveform is represented by the line 63, which is 1/3 of the distance above the trough 64 of the distance between the trough 64 and the crests 65. This proportion applies to parabolic waveforms used for convergence purposes.
  • the areas of the waveform 62 above and below the direct current component line 63 are equal.
  • the direct current component is represented by the distance between the line 63 and the zero current line 66.
  • the direct current resistance of the choke coil 60 is selected so that approximately of the direct current flows through the choke coil 60 and the balance flows through resistors 54.
  • the waveform 67 then represents the current through the convergence coils 13. It can be seen that the troughs or minimum current points 64 of the waveform 67 coincide with zero current through the resistors 54. Therefore, zero current exists in resistors 54 at the middle of vertical scan.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
US654699A 1957-04-24 1957-04-24 Multi-beam convergence system Expired - Lifetime US2903622A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL227158D NL227158A (it) 1957-04-24
BE566993D BE566993A (it) 1957-04-24
US654699A US2903622A (en) 1957-04-24 1957-04-24 Multi-beam convergence system
GB9914/58A GB883692A (en) 1957-04-24 1958-03-27 Multi-beam convergence system
DER23054A DE1058097B (de) 1957-04-24 1958-04-02 Mehrstrahl-Konvergenzschaltung fuer Farbfernsehempfaenger
FR1204608D FR1204608A (fr) 1957-04-24 1958-04-23 Perfectionnements aux récepteurs de télévision en couleurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US654699A US2903622A (en) 1957-04-24 1957-04-24 Multi-beam convergence system

Publications (1)

Publication Number Publication Date
US2903622A true US2903622A (en) 1959-09-08

Family

ID=24625902

Family Applications (1)

Application Number Title Priority Date Filing Date
US654699A Expired - Lifetime US2903622A (en) 1957-04-24 1957-04-24 Multi-beam convergence system

Country Status (6)

Country Link
US (1) US2903622A (it)
BE (1) BE566993A (it)
DE (1) DE1058097B (it)
FR (1) FR1204608A (it)
GB (1) GB883692A (it)
NL (1) NL227158A (it)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163797A (en) * 1960-08-24 1964-12-29 Rca Corp Electron beam convergence apparatus
DE1239726B (de) * 1963-08-01 1967-05-03 Motorola Inc Schaltungsanordnung zur dynamischen Konvergenzregelung in einem Farbfernseh-empfaenger mit einer Mehrstrahl-Lochmasken-Farbbildroehre
US3375398A (en) * 1963-09-18 1968-03-26 Blaupunkt Werke Gmbh Multi-beam convergence system
DE1279722B (de) * 1966-06-11 1968-10-10 Philips Patentverwaltung Konvergenzausgleichs-Schaltungsanordnung fuer eine Farbbildwiedergaberoehre mit mehreren Elektronenstrahlen
US3419748A (en) * 1965-12-23 1968-12-31 Sylvania Electric Prod Convergence waveform-shaping circuitry
US3419749A (en) * 1966-11-29 1968-12-31 Admiral Corp Convergence circuit
US3461341A (en) * 1967-12-11 1969-08-12 Matsushita Electric Ind Co Ltd Dynamic convergence device for three electron gun color television receiver
US3548248A (en) * 1967-07-19 1970-12-15 Sony Corp Misconvergence compensation for single gun,plural beam type color tv picture tube
US3560793A (en) * 1969-04-10 1971-02-02 Orega Electro Mecanique Color television convergence system
US3735191A (en) * 1970-04-27 1973-05-22 Rca Corp Dynamic convergence circuits
US3735189A (en) * 1971-03-19 1973-05-22 Zenith Radio Corp Blue droop correction circuit with a single supplemental correction coil
US4139799A (en) * 1976-05-25 1979-02-13 Matsushita Electric Industrial Co., Ltd. Convergence device for color television receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3340422A (en) * 1963-09-14 1967-09-05 Emi Ltd Dynamic convergence circuits for multiple gun cathode ray tubes

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707248A (en) * 1952-11-26 1955-04-26 Rca Corp Electromagnetic beam-convergence systems for tri-color kinescopes
US2742589A (en) * 1954-10-25 1956-04-17 Rca Corp Electron beam convergence apparatus
US2880362A (en) * 1955-05-26 1959-03-31 Motorola Inc Color television receiver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2707248A (en) * 1952-11-26 1955-04-26 Rca Corp Electromagnetic beam-convergence systems for tri-color kinescopes
US2742589A (en) * 1954-10-25 1956-04-17 Rca Corp Electron beam convergence apparatus
US2880362A (en) * 1955-05-26 1959-03-31 Motorola Inc Color television receiver

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3163797A (en) * 1960-08-24 1964-12-29 Rca Corp Electron beam convergence apparatus
DE1239726B (de) * 1963-08-01 1967-05-03 Motorola Inc Schaltungsanordnung zur dynamischen Konvergenzregelung in einem Farbfernseh-empfaenger mit einer Mehrstrahl-Lochmasken-Farbbildroehre
US3375398A (en) * 1963-09-18 1968-03-26 Blaupunkt Werke Gmbh Multi-beam convergence system
US3419748A (en) * 1965-12-23 1968-12-31 Sylvania Electric Prod Convergence waveform-shaping circuitry
DE1279722B (de) * 1966-06-11 1968-10-10 Philips Patentverwaltung Konvergenzausgleichs-Schaltungsanordnung fuer eine Farbbildwiedergaberoehre mit mehreren Elektronenstrahlen
US3419749A (en) * 1966-11-29 1968-12-31 Admiral Corp Convergence circuit
US3548248A (en) * 1967-07-19 1970-12-15 Sony Corp Misconvergence compensation for single gun,plural beam type color tv picture tube
US3461341A (en) * 1967-12-11 1969-08-12 Matsushita Electric Ind Co Ltd Dynamic convergence device for three electron gun color television receiver
US3560793A (en) * 1969-04-10 1971-02-02 Orega Electro Mecanique Color television convergence system
US3735191A (en) * 1970-04-27 1973-05-22 Rca Corp Dynamic convergence circuits
US3735189A (en) * 1971-03-19 1973-05-22 Zenith Radio Corp Blue droop correction circuit with a single supplemental correction coil
US4139799A (en) * 1976-05-25 1979-02-13 Matsushita Electric Industrial Co., Ltd. Convergence device for color television receiver

Also Published As

Publication number Publication date
NL227158A (it)
BE566993A (it)
DE1058097B (de) 1959-05-27
FR1204608A (fr) 1960-01-27
GB883692A (en) 1961-12-06

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