GB1413269A - Aperture correction of video signals - Google Patents

Aperture correction of video signals

Info

Publication number
GB1413269A
GB1413269A GB1608674A GB1608674A GB1413269A GB 1413269 A GB1413269 A GB 1413269A GB 1608674 A GB1608674 A GB 1608674A GB 1608674 A GB1608674 A GB 1608674A GB 1413269 A GB1413269 A GB 1413269A
Authority
GB
United Kingdom
Prior art keywords
video signal
signal
rise time
stage
correction 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
GB1608674A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Robert Bosch Fernsehanlagen GmbH
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 Robert Bosch Fernsehanlagen GmbH filed Critical Robert Bosch Fernsehanlagen GmbH
Publication of GB1413269A publication Critical patent/GB1413269A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
GB1608674A 1973-05-25 1974-04-11 Aperture correction of video signals Expired GB1413269A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2326620A DE2326620C3 (de) 1973-05-25 1973-05-25 Schaltungsanordnung zur Erzeugung eines Korrektursignals für die Aperturkorrektur von Videosignalen

Publications (1)

Publication Number Publication Date
GB1413269A true GB1413269A (en) 1975-11-12

Family

ID=5882091

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1608674A Expired GB1413269A (en) 1973-05-25 1974-04-11 Aperture correction of video signals

Country Status (5)

Country Link
US (1) US3946153A (https=)
DE (1) DE2326620C3 (https=)
FR (1) FR2231169B1 (https=)
GB (1) GB1413269A (https=)
NL (1) NL7407006A (https=)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5668073A (en) * 1979-11-07 1981-06-08 Canon Inc Outline correcting device of video signal
JPS57109479A (en) * 1980-12-26 1982-07-07 Sony Corp Picture quality adjusting circuit
DE3227895A1 (de) * 1981-10-14 1984-01-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur versteilerung der flanken eines videosignals, insbesondere fuer einen videorecorder
DE3226432A1 (de) * 1981-10-14 1984-01-19 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur versteilerung der flanken eines videosignals
DE3140761C2 (de) * 1981-10-14 1983-08-11 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltung zur Versteilerung der Flanken eines Videosignals, insbesondere für einen Videorecorder
DE3307014A1 (de) * 1983-02-28 1984-08-30 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Schaltung zur verbesserung der bildschaerfe bei einem videorecorder
JPH0744135Y2 (ja) * 1988-06-20 1995-10-09 ソニー株式会社 輪郭強調回路
JPH02296469A (ja) * 1989-05-10 1990-12-07 Pioneer Electron Corp 輪郭補償回路
JPH03214885A (ja) * 1990-01-19 1991-09-20 Toshiba Corp 色信号の輪郭強調回路
MY108262A (en) * 1990-08-20 1996-09-30 Rca Licensing Corp Signal adaptive beam scan velocity modulation.
WO2001069918A1 (en) * 2000-03-15 2001-09-20 Koninklijke Philips Electronics N.V. Video-apparatus with peaking filter
US20050030429A1 (en) * 2003-08-08 2005-02-10 Stmicroelectronics S.A. Correction of the scan speed of a display screen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3549901A (en) * 1967-03-30 1970-12-22 Central Dynamics Equalizer circuitry incorporating aperture corrector and independent gain adjustment
DE1537111B2 (de) * 1967-07-28 1974-05-16 Robert Bosch Fernsehanlagen Gmbh, 6100 Darmstadt Verfahren und Anordnung zur Erhöhung der Konturenschärfe eines Fernsehbildes durch zweiseitige Aperturkorrektur des bildschreibenden Fernsehsignals
US3836707A (en) * 1971-12-27 1974-09-17 Hitachi Ltd Video signal processing device for extracting the chrominance and luminance signals from a composite video signal in a color television receiver

Also Published As

Publication number Publication date
FR2231169A1 (https=) 1974-12-20
DE2326620A1 (de) 1974-12-05
DE2326620B2 (de) 1978-12-07
US3946153A (en) 1976-03-23
DE2326620C3 (de) 1979-08-02
FR2231169B1 (https=) 1977-09-23
NL7407006A (https=) 1974-11-27

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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