GB1475512A - Television signal detecting circuits - Google Patents

Television signal detecting circuits

Info

Publication number
GB1475512A
GB1475512A GB2700674A GB2700674A GB1475512A GB 1475512 A GB1475512 A GB 1475512A GB 2700674 A GB2700674 A GB 2700674A GB 2700674 A GB2700674 A GB 2700674A GB 1475512 A GB1475512 A GB 1475512A
Authority
GB
United Kingdom
Prior art keywords
transistor
conductive
capacitor
switched
signal
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
GB2700674A
Other languages
English (en)
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.)
Sony Corp
Original Assignee
Sony 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
Application filed by Sony Corp filed Critical Sony Corp
Publication of GB1475512A publication Critical patent/GB1475512A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/30—Modifications for providing a predetermined threshold before switching
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0218—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values
    • H03J5/0236—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, by selecting the corresponding analogue value between a set of preset values with possibility to skip over certain counter positions, i.e. channel skipping, or scanning the counter position with a variable frequency rate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
    • H03J7/18—Automatic scanning over a band of frequencies
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronizing For Television (AREA)
  • Television Receiver Circuits (AREA)
GB2700674A 1973-06-20 1974-06-18 Television signal detecting circuits Expired GB1475512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1973073209U JPS5020528U (https=) 1973-06-20 1973-06-20

Publications (1)

Publication Number Publication Date
GB1475512A true GB1475512A (en) 1977-06-01

Family

ID=13511521

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2700674A Expired GB1475512A (en) 1973-06-20 1974-06-18 Television signal detecting circuits

Country Status (7)

Country Link
US (1) US3949164A (https=)
JP (1) JPS5020528U (https=)
DE (1) DE2429595C2 (https=)
FR (1) FR2246149B1 (https=)
GB (1) GB1475512A (https=)
IT (1) IT1015251B (https=)
NL (1) NL7408311A (https=)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2541299B2 (de) * 1975-09-16 1978-05-18 Texas Instruments Deutschland Gmbh, 8050 Freising Schaltung zur Erzeugung einer treppenförmigen Abstimmspannung zum Abstimmen eines Empfängers
DE2654847C3 (de) 1976-12-03 1979-05-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung zur Fernsehsendererkennung
JPS5816789B2 (ja) * 1977-04-30 1983-04-02 シャープ株式会社 自動選局装置の信号判別回路
US4205347A (en) * 1977-04-30 1980-05-27 Sharp Kabushiki Kaisha Television signal determination in an automatic tuning system
JPS5821984B2 (ja) * 1977-09-17 1983-05-06 シャープ株式会社 自動選局装置の信号判別回路
IT1116644B (it) * 1977-07-26 1986-02-10 Indesit Dispositivo per la sintonizzazione di un televisore
JPS5821985B2 (ja) * 1977-11-02 1983-05-06 シャープ株式会社 自動選局装置の信号判別回路
GB2030018B (en) * 1978-09-15 1983-03-23 Plessey Co Ltd Receiver arrangement
US4390904A (en) * 1979-09-20 1983-06-28 Shelton Video Editors, Inc. Automatic circuit and method for editing commercial messages from television signals

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3378775A (en) * 1964-08-19 1968-04-16 William T. Joseph Method and apparatus for controlling a television receiver
AT284221B (de) * 1968-07-11 1970-09-10 Philips Nv Schaltungsanordnung zum Erkennen eines vollständigen Videosignales
US3610817A (en) * 1969-06-02 1971-10-05 Rca Corp Television signal seeking system with horizontal synchronizing pulse detector circuit for controlling the signal seeking
US3632864A (en) * 1969-06-02 1972-01-04 Rca Corp Signal seeking system for radio receivers with tuning indicating circuitry for controlling the signal seeking
US3737565A (en) * 1970-11-09 1973-06-05 Zenith Radio Corp Signal detector for a signal-seeking tuning system
US3751588A (en) * 1972-06-02 1973-08-07 Gte Sylvania Inc Vertical synchronizing circuitry
JPS4960423A (https=) * 1972-10-11 1974-06-12

Also Published As

Publication number Publication date
US3949164A (en) 1976-04-06
JPS5020528U (https=) 1975-03-08
FR2246149B1 (https=) 1977-10-14
IT1015251B (it) 1977-05-10
DE2429595C2 (de) 1983-08-18
NL7408311A (https=) 1974-12-24
FR2246149A1 (https=) 1975-04-25
DE2429595A1 (de) 1975-01-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee