HK59291A - Digital aft system - Google Patents

Digital aft system

Info

Publication number
HK59291A
HK59291A HK592/91A HK59291A HK59291A HK 59291 A HK59291 A HK 59291A HK 592/91 A HK592/91 A HK 592/91A HK 59291 A HK59291 A HK 59291A HK 59291 A HK59291 A HK 59291A
Authority
HK
Hong Kong
Prior art keywords
frequency
carrier
measurement
interval
picture carrier
Prior art date
Application number
HK592/91A
Other languages
English (en)
Inventor
Tults Juri
Original Assignee
Rca Thomson Licensing Corporation
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 claimed from US06/413,762 external-priority patent/US4484221A/en
Priority claimed from US06/413,769 external-priority patent/US4485404A/en
Application filed by Rca Thomson Licensing Corporation filed Critical Rca Thomson Licensing Corporation
Publication of HK59291A publication Critical patent/HK59291A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/02—Automatic frequency control
    • H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
    • H03J7/06—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers
    • H03J7/065—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant using counters or frequency dividers the counter or frequency divider being used in a phase locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/50—Tuning indicators; Automatic tuning control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Television Receiver Circuits (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
HK592/91A 1982-09-01 1991-08-01 Digital aft system HK59291A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/413,762 US4484221A (en) 1982-09-01 1982-09-01 Shared counter arrangement for a digital frequency locked loop tuning system for selectively measuring the frequencies of the LO and IF signals
US06/413,769 US4485404A (en) 1982-09-01 1982-09-01 Digital aft system which is activated during vertical retrace intervals

Publications (1)

Publication Number Publication Date
HK59291A true HK59291A (en) 1991-08-09

Family

ID=27022287

Family Applications (1)

Application Number Title Priority Date Filing Date
HK592/91A HK59291A (en) 1982-09-01 1991-08-01 Digital aft system

Country Status (11)

Country Link
JP (1) JPH0793710B2 (enrdf_load_stackoverflow)
KR (1) KR920009011B1 (enrdf_load_stackoverflow)
AT (1) AT386713B (enrdf_load_stackoverflow)
AU (1) AU567304B2 (enrdf_load_stackoverflow)
CA (1) CA1203330A (enrdf_load_stackoverflow)
DE (1) DE3331609A1 (enrdf_load_stackoverflow)
ES (1) ES525161A0 (enrdf_load_stackoverflow)
FR (1) FR2541545B1 (enrdf_load_stackoverflow)
GB (1) GB2126813B (enrdf_load_stackoverflow)
HK (1) HK59291A (enrdf_load_stackoverflow)
IT (1) IT1171083B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503465A (en) * 1982-11-24 1985-03-05 Rca Corporation Analog signal comparator using digital circuitry
JPS59106265U (ja) * 1982-12-31 1984-07-17 日本電気ホームエレクトロニクス株式会社 自動微同調回路
US4524387A (en) * 1983-03-30 1985-06-18 Rca Corporation Synchronization input for television receiver on-screen alphanumeric display
US4601060A (en) * 1984-10-24 1986-07-15 Rca Corporation Automatic digital fine tuning system
NL8801874A (nl) * 1988-07-26 1990-02-16 Philips Nv Televisie-ontvanger met een afstemschakeling die een frequentiesyntheseschakeling bevat.
JPH0648778B2 (ja) * 1989-09-29 1994-06-22 三洋電機株式会社 衛星放送受信装置のａｆｃ方法
US5163164A (en) * 1990-12-31 1992-11-10 Thomson Consumer Electronics, Inc. Microprocessor controlled digital aft unit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB673770A (en) * 1950-03-30 1952-06-11 Standard Telephones Cables Ltd Improvements in or relating to automatic frequency control arrangements for radio communication systems
DE2660248C2 (de) * 1975-11-14 1982-06-24 RCA Corp., 10020 New York, N.Y. Abstimmeinrichtung für Fernsehempfänger
IT1073074B (it) * 1975-11-14 1985-04-13 Rca Corp Sintetizzatore di frequenze televisive,per portanti di frequenza non standardizzata
FR2340909A1 (fr) * 1976-02-10 1977-09-09 Omnium Assainissement Materiaux-supports de fermentation biologique
US4084127A (en) * 1976-07-29 1978-04-11 Rca Corporation Digital frequency deviation detector useful in a television tuning system
JPS5580928A (en) * 1978-12-15 1980-06-18 Sony Corp Channel selection device
JPS55147884A (en) * 1979-05-07 1980-11-18 Sanyo Electric Co Ltd Aft circuit of television receiver
NZ193794A (en) * 1979-05-30 1984-03-30 Rca Corp Channel identification in multiband sweep tuning system
JPS56782A (en) * 1979-06-15 1981-01-07 Sanyo Electric Co Ltd Automatic tuning unit
US4358791A (en) * 1980-12-01 1982-11-09 Rca Corporation Phase locked loop tuning control system including a sync activated AFT signal seeking arrangement
US4368540A (en) * 1981-06-05 1983-01-11 Rca Corporation Phase locked loop tuning system including a prescaler conditioned to oscillate at an out-of-band frequency
US4402089A (en) * 1981-09-16 1983-08-30 Rca Corporation Television tuning system with electronic frequency adjustment apparatus
JPS58111522A (ja) * 1981-12-25 1983-07-02 Sony Corp Ａｆｔ回路

Also Published As

Publication number Publication date
ES8406020A1 (es) 1984-06-16
CA1203330A (en) 1986-04-15
IT8322693A1 (it) 1985-03-02
DE3331609A1 (de) 1984-03-01
ES525161A0 (es) 1984-06-16
GB2126813B (en) 1986-07-23
KR920009011B1 (ko) 1992-10-12
JPS5964980A (ja) 1984-04-13
GB8323490D0 (en) 1983-10-05
IT8322693A0 (it) 1983-08-30
AT386713B (de) 1988-10-10
AU1854483A (en) 1984-03-08
ATA313583A (de) 1988-02-15
DE3331609C2 (enrdf_load_stackoverflow) 1988-01-21
JPH0793710B2 (ja) 1995-10-09
FR2541545B1 (fr) 1989-06-30
KR840006116A (ko) 1984-11-21
IT1171083B (it) 1987-06-10
AU567304B2 (en) 1987-11-19
FR2541545A1 (fr) 1984-08-24
GB2126813A (en) 1984-03-28

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)