GB821119A - Circuit arrangements for differential correction of television receivers - Google Patents

Circuit arrangements for differential correction of television receivers

Info

Publication number
GB821119A
GB821119A GB16529/57A GB1652957A GB821119A GB 821119 A GB821119 A GB 821119A GB 16529/57 A GB16529/57 A GB 16529/57A GB 1652957 A GB1652957 A GB 1652957A GB 821119 A GB821119 A GB 821119A
Authority
GB
United Kingdom
Prior art keywords
television receivers
circuit arrangements
differential correction
signals
path including
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
GB16529/57A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB821119A publication Critical patent/GB821119A/en
Expired 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
    • H04N5/20—Circuitry for controlling amplitude response
    • H04N5/205—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic
    • H04N5/208—Circuitry for controlling amplitude response for correcting amplitude versus frequency characteristic for compensating for attenuation of high frequency components, e.g. crispening, aperture distortion correction
    • 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
    • H04N5/16—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level
    • H04N5/165—Circuitry for reinsertion of dc and slowly varying components of signal; Circuitry for preservation of black or white level to maintain the black level constant
    • 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
    • H04N5/213—Circuitry for suppressing or minimising impulsive noise
    • 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
    • H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
    • 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
    • H04N5/52—Automatic gain control
    • H04N5/53—Keyed automatic gain control

Abstract

821,119. Television. STANDARD TELEPHONES & CABLES Ltd. May 24, 1957 [May 25, 1956], No. 16529/57. Class 40 (3). [Also in Group XL (c)] In a television receiver the slope of black-towhite transitions is increased by combining signals in a first path including a delay network L1, C2, with signals in a second path including valve V3 and a differentiating network comprising C3, R2, R3, the combined signals being supplied to a video amplifier stage V2.
GB16529/57A 1956-05-25 1957-05-24 Circuit arrangements for differential correction of television receivers Expired GB821119A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEL24940A DE1062734B (en) 1956-05-25 1956-05-25 Circuit arrangement for differential equalization in television receivers
DEL27760A DE1046097B (en) 1956-05-25 1957-05-31 Circuit arrangement for achieving automatic gain control
DE846058X 1957-12-24

Publications (1)

Publication Number Publication Date
GB821119A true GB821119A (en) 1959-09-30

Family

ID=27207631

Family Applications (3)

Application Number Title Priority Date Filing Date
GB16529/57A Expired GB821119A (en) 1956-05-25 1957-05-24 Circuit arrangements for differential correction of television receivers
GB17354/58A Expired GB822158A (en) 1956-05-25 1958-05-30 Circuit arrangement for obtaining automatic gain control
GB37538/58A Expired GB846058A (en) 1956-05-25 1958-11-21 Television receiver circuit

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB17354/58A Expired GB822158A (en) 1956-05-25 1958-05-30 Circuit arrangement for obtaining automatic gain control
GB37538/58A Expired GB846058A (en) 1956-05-25 1958-11-21 Television receiver circuit

Country Status (4)

Country Link
BE (1) BE570344A (en)
DE (2) DE1062734B (en)
FR (7) FR1114362A (en)
GB (3) GB821119A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1176180B (en) * 1956-11-07 1964-08-20 Fernseh Gmbh Circuit arrangement for limiting the amplitude of television signals
DE1184792B (en) * 1960-01-26 1965-01-07 Loewe Opta Ag Circuit arrangement for generating control voltage in television receivers
DE1242676B (en) * 1961-01-26 1967-06-22 Telefunken Patent Circuit arrangement for automatic gain control in television receivers
GB1043737A (en) * 1963-08-23 1966-09-28 Rank Bush Murphy Ltd Video signal processing circuit arrangement
US4400720A (en) * 1981-05-07 1983-08-23 Rca Corporation Dynamic de-emphasis compensation system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1988370A (en) * 1929-12-06 1935-01-15 Philadelphia Storage Battery Automatic volume control
US1990512A (en) * 1931-12-18 1935-02-12 Bell Telephone Labor Inc Radioreceiver
US2740071A (en) * 1950-05-11 1956-03-27 Columbia Broadcasting Syst Inc Television
DE970151C (en) * 1953-04-02 1958-08-21 Saba Gmbh Arrangement for noise suppression when receiving frequency-modulated vibrations
FR1111454A (en) * 1953-11-04 1956-02-27 Marconi Wireless Telegraph Co Improvements to electrical networks used for the adjustment and correction of the frequency response

Also Published As

Publication number Publication date
GB846058A (en) 1960-08-24
FR74441E (en) 1960-12-19
FR73548E (en) 1960-08-22
GB822158A (en) 1959-10-21
FR1114362A (en) 1956-04-11
FR72614E (en) 1960-04-22
FR74443E (en) 1960-12-19
FR74807E (en) 1961-03-03
FR73937E (en) 1960-10-31
DE1062734B (en) 1959-08-06
DE1046097B (en) 1958-12-11
BE570344A (en) 1961-09-08

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