GB1191886A - Gamma-Correction Arrangement - Google Patents

Gamma-Correction Arrangement

Info

Publication number
GB1191886A
GB1191886A GB32219/67A GB3221967A GB1191886A GB 1191886 A GB1191886 A GB 1191886A GB 32219/67 A GB32219/67 A GB 32219/67A GB 3221967 A GB3221967 A GB 3221967A GB 1191886 A GB1191886 A GB 1191886A
Authority
GB
United Kingdom
Prior art keywords
signal
transistor
corrected
current
signal range
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
GB32219/67A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1191886A publication Critical patent/GB1191886A/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
    • H04N5/202—Gamma control

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Amplifiers (AREA)
GB32219/67A 1966-07-16 1967-07-13 Gamma-Correction Arrangement Expired GB1191886A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6610059A NL6610059A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1966-07-16 1966-07-16

Publications (1)

Publication Number Publication Date
GB1191886A true GB1191886A (en) 1970-05-13

Family

ID=19797203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32219/67A Expired GB1191886A (en) 1966-07-16 1967-07-13 Gamma-Correction Arrangement

Country Status (5)

Country Link
US (1) US3534168A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE1537257A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1191886A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL6610059A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE349217B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211045A (en) * 1987-10-10 1989-06-21 Marconi Co Ltd Linearity adjustable circuit
GB2258782A (en) * 1991-07-30 1993-02-17 Samsung Electronics Co Ltd Television signal gamma correction

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58130676A (ja) * 1982-01-29 1983-08-04 Toshiba Corp ガンマ補正回路
US4598235A (en) * 1984-03-27 1986-07-01 Ampex Corporation Method and apparatus for eliminating lag in photoelectric tubes
JPH01196978A (ja) * 1988-01-30 1989-08-08 Fuji Photo Film Co Ltd 書類撮影用ビデオカメラ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE519710A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1952-05-07
GB1015806A (en) * 1963-04-01 1966-01-05 Marconi Co Ltd Improvements in or relating to television signal correcting circuit arrangements

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2211045A (en) * 1987-10-10 1989-06-21 Marconi Co Ltd Linearity adjustable circuit
GB2211045B (en) * 1987-10-10 1991-08-21 Marconi Co Ltd Linearity adjusting circuit
US5119506A (en) * 1987-10-10 1992-06-02 The Marconi Company Limited Circuit for automatically adjusting the rate of change of amplitude of an output signal over selected input signal amplitude bands
GB2258782A (en) * 1991-07-30 1993-02-17 Samsung Electronics Co Ltd Television signal gamma correction
GB2258782B (en) * 1991-07-30 1995-04-12 Samsung Electronics Co Ltd Method and apparatus for gamma correction

Also Published As

Publication number Publication date
NL6610059A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1968-01-17
DE1537257A1 (de) 1969-09-11
SE349217B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-09-18
US3534168A (en) 1970-10-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees