GB2273216B - A modulator circuit - Google Patents

A modulator circuit

Info

Publication number
GB2273216B
GB2273216B GB9225292A GB9225292A GB2273216B GB 2273216 B GB2273216 B GB 2273216B GB 9225292 A GB9225292 A GB 9225292A GB 9225292 A GB9225292 A GB 9225292A GB 2273216 B GB2273216 B GB 2273216B
Authority
GB
United Kingdom
Prior art keywords
modulator circuit
modulator
circuit
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
GB9225292A
Other versions
GB2273216A (en
GB9225292D0 (en
Inventor
Peter John Ligertwood
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Priority to GB9225292A priority Critical patent/GB2273216B/en
Publication of GB9225292D0 publication Critical patent/GB9225292D0/en
Priority to US08/129,037 priority patent/US5467141A/en
Priority to PCT/EP1993/000391 priority patent/WO1993017522A1/en
Priority to JP5514522A priority patent/JPH06507291A/en
Priority to EP93903991A priority patent/EP0581936B1/en
Priority to DE69306330T priority patent/DE69306330T2/en
Publication of GB2273216A publication Critical patent/GB2273216A/en
Application granted granted Critical
Publication of GB2273216B publication Critical patent/GB2273216B/en
Priority to HK98103163A priority patent/HK1004042A1/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
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/38—Transmitter circuitry for the transmission of television signals according to analogue transmission standards
    • H04N5/40—Modulation circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/797—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal
    • H04N9/7973—Processing of colour television signals in connection with recording for recording the signal in a plurality of channels, the bandwidth of each channel being less than the bandwidth of the signal by dividing the luminance or colour component signal samples or frequency bands among a plurality of recording channels
GB9225292A 1992-02-20 1992-12-03 A modulator circuit Expired - Fee Related GB2273216B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB9225292A GB2273216B (en) 1992-12-03 1992-12-03 A modulator circuit
US08/129,037 US5467141A (en) 1992-02-20 1993-02-18 Modulator circuit for use with a plurality of operating standards
PCT/EP1993/000391 WO1993017522A1 (en) 1992-02-20 1993-02-18 A modulator circuit
JP5514522A JPH06507291A (en) 1992-02-20 1993-02-18 modulation circuit
EP93903991A EP0581936B1 (en) 1992-02-20 1993-02-18 A modulator circuit
DE69306330T DE69306330T2 (en) 1992-02-20 1993-02-18 MODULATOR CIRCUIT
HK98103163A HK1004042A1 (en) 1992-12-03 1998-04-16 A modulator circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9225292A GB2273216B (en) 1992-12-03 1992-12-03 A modulator circuit

Publications (3)

Publication Number Publication Date
GB9225292D0 GB9225292D0 (en) 1993-01-27
GB2273216A GB2273216A (en) 1994-06-08
GB2273216B true GB2273216B (en) 1996-10-30

Family

ID=10726060

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9225292A Expired - Fee Related GB2273216B (en) 1992-02-20 1992-12-03 A modulator circuit

Country Status (2)

Country Link
GB (1) GB2273216B (en)
HK (1) HK1004042A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9521345D0 (en) * 1995-10-18 1995-12-20 Plessey Semiconductors Ltd Video modulator arrangements

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154318A1 (en) * 1984-03-05 1985-09-11 Alps Electric Co., Ltd. High frequency modulation circuit
EP0432052A2 (en) * 1989-12-08 1991-06-12 Sony Corporation RF modulator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0154318A1 (en) * 1984-03-05 1985-09-11 Alps Electric Co., Ltd. High frequency modulation circuit
EP0432052A2 (en) * 1989-12-08 1991-06-12 Sony Corporation RF modulator

Also Published As

Publication number Publication date
GB2273216A (en) 1994-06-08
HK1004042A1 (en) 1998-11-13
GB9225292D0 (en) 1993-01-27

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Legal Events

Date Code Title Description
746 Register noted 'licences of right' (sect. 46/1977)

Effective date: 19981005

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20011203