HK41395A - Circuitry for reducing demodulation phase error as for an automatic deghosting system - Google Patents

Circuitry for reducing demodulation phase error as for an automatic deghosting system Download PDF

Info

Publication number
HK41395A
HK41395A HK41395A HK41395A HK41395A HK 41395 A HK41395 A HK 41395A HK 41395 A HK41395 A HK 41395A HK 41395 A HK41395 A HK 41395A HK 41395 A HK41395 A HK 41395A
Authority
HK
Hong Kong
Prior art keywords
phase
signal
signals
difference
carrier signal
Prior art date
Application number
HK41395A
Other languages
English (en)
Inventor
Richard Campbell Edward Iii
Garton Lewis Henry Jr
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 US06/868,113 external-priority patent/US4686569A/en
Priority claimed from US06/878,260 external-priority patent/US4688096A/en
Application filed by Rca Thomson Licensing Corporation filed Critical Rca Thomson Licensing Corporation
Publication of HK41395A publication Critical patent/HK41395A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • 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
    • H04N5/455—Demodulation-circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/007—Demodulation of angle-, frequency- or phase- modulated oscillations by converting the oscillations into two quadrature related signals
    • H03D3/009—Compensating quadrature phase or amplitude imbalances
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo
    • H04N5/211—Ghost signal cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Picture Signal Circuits (AREA)
HK41395A 1986-05-29 1995-03-23 Circuitry for reducing demodulation phase error as for an automatic deghosting system HK41395A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/868,113 US4686569A (en) 1986-05-29 1986-05-29 Circuitry for reducing demodulation phase error as for an automatic deghosting system
US06/878,260 US4688096A (en) 1986-06-25 1986-06-25 Demodulation phase error compensation circuitry as for an automatic deghosting system

Publications (1)

Publication Number Publication Date
HK41395A true HK41395A (en) 1995-03-31

Family

ID=27128036

Family Applications (1)

Application Number Title Priority Date Filing Date
HK41395A HK41395A (en) 1986-05-29 1995-03-23 Circuitry for reducing demodulation phase error as for an automatic deghosting system

Country Status (7)

Country Link
JP (1) JP2627270B2 (enrdf_load_stackoverflow)
KR (1) KR950004103B1 (enrdf_load_stackoverflow)
DE (1) DE3718103A1 (enrdf_load_stackoverflow)
FR (1) FR2599574B1 (enrdf_load_stackoverflow)
GB (1) GB2191367B (enrdf_load_stackoverflow)
HK (1) HK41395A (enrdf_load_stackoverflow)
SG (1) SG28693G (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287144B (en) * 1994-02-23 1998-11-18 Motorola Israel Ltd A radio device and a single-frequency radio transponder
DE4427018A1 (de) * 1994-07-29 1996-02-08 Siemens Ag Schaltungsanordnung zur Zwischenfrequenzdemodulation
KR100311522B1 (ko) * 1999-07-31 2001-10-18 서평원 디지털 티브이 중계기에서의 왜곡 신호 보상 방법 및 장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199922A (enrdf_load_stackoverflow) * 1975-02-28 1976-09-03 Matsushita Electric Ind Co Ltd
JPS535559A (en) * 1976-07-05 1978-01-19 Nec Corp Synchronous demodulation system
JPS5942518B2 (ja) * 1976-12-24 1984-10-15 ソニー株式会社 信号制御回路
GB1595636A (en) * 1977-07-22 1981-08-12 Mitsubishi Electric Corp Apparatus for reducing ghosting of tv pictures
JPS54150027A (en) * 1978-05-18 1979-11-24 Sony Corp Television picture receiver
US4374400A (en) * 1981-06-16 1983-02-15 Rca Corporation Television ghost cancellation system with ghost carrier phase compensation
US4703357A (en) * 1985-12-24 1987-10-27 Rca Corporation Adaptive television deghosting system

Also Published As

Publication number Publication date
GB2191367A (en) 1987-12-09
DE3718103C2 (enrdf_load_stackoverflow) 1989-09-07
GB8712044D0 (en) 1987-06-24
FR2599574A1 (fr) 1987-12-04
SG28693G (en) 1993-05-21
DE3718103A1 (de) 1987-12-03
KR950004103B1 (ko) 1995-04-25
KR870011796A (ko) 1987-12-26
JPS62287781A (ja) 1987-12-14
JP2627270B2 (ja) 1997-07-02
GB2191367B (en) 1990-04-11
FR2599574B1 (fr) 1990-08-31

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Legal Events

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

Effective date: 20050521