IT941798B - Sistema oscillatore a controllo automatico di frequenza - Google Patents

Sistema oscillatore a controllo automatico di frequenza

Info

Publication number
IT941798B
IT941798B IT31710/71A IT3171071A IT941798B IT 941798 B IT941798 B IT 941798B IT 31710/71 A IT31710/71 A IT 31710/71A IT 3171071 A IT3171071 A IT 3171071A IT 941798 B IT941798 B IT 941798B
Authority
IT
Italy
Prior art keywords
frequency control
automatic frequency
control oscillator
oscillator system
automatic
Prior art date
Application number
IT31710/71A
Other languages
English (en)
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
Application filed by Rca Corp filed Critical Rca Corp
Application granted granted Critical
Publication of IT941798B publication Critical patent/IT941798B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/123—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal directly commands a frequency generator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/08—Details of the phase-locked loop
    • H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
    • H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
    • H03L7/1075—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth by changing characteristics of the loop filter, e.g. changing the gain, changing the bandwidth

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Synchronizing For Television (AREA)
IT31710/71A 1970-12-03 1971-11-26 Sistema oscillatore a controllo automatico di frequenza IT941798B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9488970A 1970-12-03 1970-12-03

Publications (1)

Publication Number Publication Date
IT941798B true IT941798B (it) 1973-03-10

Family

ID=22247749

Family Applications (1)

Application Number Title Priority Date Filing Date
IT31710/71A IT941798B (it) 1970-12-03 1971-11-26 Sistema oscillatore a controllo automatico di frequenza

Country Status (14)

Country Link
US (1) US3715499A (it)
JP (1) JPS5139811B1 (it)
KR (1) KR780000539B1 (it)
AT (1) AT320756B (it)
BE (1) BE776064A (it)
CA (1) CA940607A (it)
DE (1) DE2159653C3 (it)
ES (1) ES397661A1 (it)
FR (1) FR2116415B1 (it)
GB (1) GB1358049A (it)
IT (1) IT941798B (it)
NL (1) NL7116576A (it)
SE (1) SE377644B (it)
TR (1) TR17493A (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810024A (en) * 1972-11-20 1974-05-07 Westinghouse Electric Corp Method and circuit for monitoring and detecting sweep signal failure
US3899635A (en) * 1974-01-30 1975-08-12 Rca Corp Dual mode deflection synchronizing system
US3931467A (en) * 1974-10-24 1976-01-06 Warwick Electronics Inc. Synchronizing circuit having a variable bandpass filter
US4047223A (en) * 1976-01-16 1977-09-06 Zenith Radio Corporation Frequency scanning automatic phase control system
DE3005826C2 (de) * 1980-02-16 1981-12-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur Gewinnung eines Zeilenrücklaufimpulses in einem Fernsehempfänger
US4363004A (en) * 1980-10-20 1982-12-07 General Electric Company Combining and filter circuit for a phase locked loop
US4387397A (en) * 1981-03-17 1983-06-07 Rca Corporation Integrated circuit interface in a vertical sync circuit
US4410907A (en) * 1981-11-16 1983-10-18 Rca Corporation Burst gate keying and back porch clamp pulse generator
US4536794A (en) * 1982-06-30 1985-08-20 Rca Corporation Television receiver having different receiver synchronizing characteristics in response to television signal
US4872055A (en) * 1987-02-04 1989-10-03 U. S. Philips Corporation Line synchronizing circuit in a picture display device
FR2625637B1 (fr) * 1988-01-04 1990-06-15 Sgs Thomson Microelectronics Circuit de reconnaissance d'un signal de magnetoscope

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828419A (en) * 1954-10-11 1958-03-25 Gen Electric Automatic frequency control system
DE1079124B (de) * 1958-10-09 1960-04-07 Telefunken Gmbh Schaltungsanordnung zur Synchronisierung eines Schwingungserzeugers
US3287657A (en) * 1963-04-09 1966-11-22 Ericsson Telefon Ab L M Phase controlled oscillator with a variable synchronizing range
US3363194A (en) * 1965-05-24 1968-01-09 Sylvania Electric Prod Phase lock loop with extended capture range

Also Published As

Publication number Publication date
BE776064A (fr) 1972-03-16
JPS5139811B1 (it) 1976-10-29
GB1358049A (en) 1974-06-26
NL7116576A (it) 1972-06-06
AT320756B (de) 1975-02-25
ES397661A1 (es) 1974-06-01
TR17493A (tr) 1975-07-23
DE2159653C3 (de) 1978-05-11
DE2159653B2 (de) 1977-09-01
DE2159653A1 (de) 1972-06-08
FR2116415B1 (it) 1976-06-04
US3715499A (en) 1973-02-06
FR2116415A1 (it) 1972-07-13
CA940607A (en) 1974-01-22
KR780000539B1 (en) 1978-11-02
SE377644B (it) 1975-07-14

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