GB2157907B - High-frequency switching circuit - Google Patents

High-frequency switching circuit

Info

Publication number
GB2157907B
GB2157907B GB08430059A GB8430059A GB2157907B GB 2157907 B GB2157907 B GB 2157907B GB 08430059 A GB08430059 A GB 08430059A GB 8430059 A GB8430059 A GB 8430059A GB 2157907 B GB2157907 B GB 2157907B
Authority
GB
United Kingdom
Prior art keywords
switching circuit
frequency switching
frequency
circuit
switching
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
Application number
GB08430059A
Other versions
GB8430059D0 (en
GB2157907A (en
Inventor
Yoshinobu Yamaguchi
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Publication of GB8430059D0 publication Critical patent/GB8430059D0/en
Publication of GB2157907A publication Critical patent/GB2157907A/en
Application granted granted Critical
Publication of GB2157907B publication Critical patent/GB2157907B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/10—Adaptations for transmission by electrical cable
    • H04N7/102—Circuits therefor, e.g. noise reducers, equalisers, amplifiers
    • H04N7/104—Switchers or splitters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
    • H03F3/217—Class D power amplifiers; Switching amplifiers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H03F3/245—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages with semiconductor devices only
    • 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
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
    • H04N5/268—Signal distribution or switching
    • 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
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus
    • H04N5/775—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver
    • H04N5/7755—Interface circuits between an apparatus for recording and another apparatus between a recording apparatus and a television receiver the recorder being connected to, or coupled with, the antenna of the television receiver
GB08430059A 1984-04-18 1984-11-28 High-frequency switching circuit Expired GB2157907B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7670784A JPS60220623A (en) 1984-04-18 1984-04-18 High frequency switching circuit

Publications (3)

Publication Number Publication Date
GB8430059D0 GB8430059D0 (en) 1985-01-09
GB2157907A GB2157907A (en) 1985-10-30
GB2157907B true GB2157907B (en) 1987-12-31

Family

ID=13612993

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08430059A Expired GB2157907B (en) 1984-04-18 1984-11-28 High-frequency switching circuit

Country Status (2)

Country Link
JP (1) JPS60220623A (en)
GB (1) GB2157907B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960008728B1 (en) * 1992-09-30 1996-06-29 Samsung Electro Mech High frequency switching circuit of vcr
JP3037850B2 (en) * 1993-04-30 2000-05-08 アルプス電気株式会社 High frequency amplifier
WO2006083200A1 (en) 2005-02-07 2006-08-10 Telefonaktiebolaget Lm Ericsson (Publ) Electrical circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL257065A (en) * 1959-10-27
US3564431A (en) * 1968-04-22 1971-02-16 Central Dynamics Multiple input crosspoint group with common output amplifier and independently variable switching circuits
US3638131A (en) * 1969-09-29 1972-01-25 Nat Semiconductor Corp Multiplexing circuit with stage isolation means
NL8204003A (en) * 1982-10-18 1984-05-16 Philips Nv SWITCH AMPLIFIER.

Also Published As

Publication number Publication date
JPS60220623A (en) 1985-11-05
GB8430059D0 (en) 1985-01-09
GB2157907A (en) 1985-10-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee