GB2191367B - 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

Info

Publication number
GB2191367B
GB2191367B GB8712044A GB8712044A GB2191367B GB 2191367 B GB2191367 B GB 2191367B GB 8712044 A GB8712044 A GB 8712044A GB 8712044 A GB8712044 A GB 8712044A GB 2191367 B GB2191367 B GB 2191367B
Authority
GB
United Kingdom
Prior art keywords
circuitry
automatic
phase error
demodulation phase
reducing demodulation
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 - Fee Related
Application number
GB8712044A
Other versions
GB2191367A (en
GB8712044D0 (en
Inventor
Iii Edward Richard Campbell
Jr Henry Garton Lewis
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 Licensing Corp
RCA Corp
Original Assignee
RCA Licensing Corp
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 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 Licensing Corp, RCA Corp filed Critical RCA Licensing Corp
Publication of GB8712044D0 publication Critical patent/GB8712044D0/en
Publication of GB2191367A publication Critical patent/GB2191367A/en
Application granted granted Critical
Publication of GB2191367B publication Critical patent/GB2191367B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
GB8712044A 1986-05-29 1987-05-21 Circuitry for reducing demodulation phase error as for an automatic deghosting system Expired - Fee Related GB2191367B (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 (3)

Publication Number Publication Date
GB8712044D0 GB8712044D0 (en) 1987-06-24
GB2191367A GB2191367A (en) 1987-12-09
GB2191367B true GB2191367B (en) 1990-04-11

Family

ID=27128036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8712044A Expired - Fee Related GB2191367B (en) 1986-05-29 1987-05-21 Circuitry for reducing demodulation phase error as for an automatic deghosting system

Country Status (7)

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

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 (en) 1994-07-29 1996-02-08 Siemens Ag Circuit arrangement for intermediate frequency demodulation
KR100311522B1 (en) * 1999-07-31 2001-10-18 서평원 Distortion Signal Compensation Method and Device in Digital TV

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5199922A (en) * 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 (en) * 1976-12-24 1984-10-15 ソニー株式会社 signal control circuit
NL185379C (en) * 1977-07-22 1990-03-16 Mitsubishi Electric Corp SPIRIT CANCELLATION FOR TELEVISION SIGNALS.
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
JP2627270B2 (en) 1997-07-02
DE3718103C2 (en) 1989-09-07
DE3718103A1 (en) 1987-12-03
KR950004103B1 (en) 1995-04-25
FR2599574B1 (en) 1990-08-31
FR2599574A1 (en) 1987-12-04
GB2191367A (en) 1987-12-09
GB8712044D0 (en) 1987-06-24
SG28693G (en) 1993-05-21
JPS62287781A (en) 1987-12-14
KR870011796A (en) 1987-12-26
HK41395A (en) 1995-03-31

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20050521