FR2280274A1 - Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver - Google Patents

Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver

Info

Publication number
FR2280274A1
FR2280274A1 FR7425932A FR7425932A FR2280274A1 FR 2280274 A1 FR2280274 A1 FR 2280274A1 FR 7425932 A FR7425932 A FR 7425932A FR 7425932 A FR7425932 A FR 7425932A FR 2280274 A1 FR2280274 A1 FR 2280274A1
Authority
FR
France
Prior art keywords
binary data
receiver
reconverted
sender
converted
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.)
Granted
Application number
FR7425932A
Other languages
French (fr)
Other versions
FR2280274B1 (en
Inventor
Henri Leverd
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7425932A priority Critical patent/FR2280274A1/en
Priority to BE1006769A priority patent/BE830991A/en
Priority to LU72998A priority patent/LU72998A1/xx
Priority to DE19752532232 priority patent/DE2532232A1/en
Priority to SE7508337A priority patent/SE7508337L/en
Priority to DK337475A priority patent/DK337475A/en
Priority to NL7508867A priority patent/NL7508867A/en
Priority to JP50089703A priority patent/JPS5144418A/ja
Publication of FR2280274A1 publication Critical patent/FR2280274A1/en
Application granted granted Critical
Publication of FR2280274B1 publication Critical patent/FR2280274B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • H04N1/6097—Colour correction or control depending on the characteristics of the output medium, e.g. glossy paper, matt paper, transparency or fabrics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/40—Picture signal circuits
    • H04N1/407—Control or modification of tonal gradation or of extreme levels, e.g. background level
    • 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)
  • Facsimile Image Signal Circuits (AREA)
  • Picture Signal Circuits (AREA)
  • Dc Digital Transmission (AREA)

Abstract

The system comprises an analogue-digital convertor, a transmission line for binary data, a decoder which reconverts the binary signal into the video signal, and a video receiver. In addition a recorder is provided, converting the first binary data signals into second binary data signals in accordance with a specified rule, so that a gamma correction value is produced for the system, trhough which a specified picture gamma value is obtained. The second binary data signals are applied to the decoder. The recorder converts the first signals with n bits corresponding to 2n input levels into second signals which define 2m output levels, with m greater than n.
FR7425932A 1974-07-25 1974-07-25 Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver Granted FR2280274A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FR7425932A FR2280274A1 (en) 1974-07-25 1974-07-25 Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver
BE1006769A BE830991A (en) 1974-07-25 1975-07-04 IMAGE TRANSMISSION CHAIN
LU72998A LU72998A1 (en) 1974-07-25 1975-07-17
DE19752532232 DE2532232A1 (en) 1974-07-25 1975-07-18 IMAGE TRANSFER DEVICE
SE7508337A SE7508337L (en) 1974-07-25 1975-07-22 CHAIN FOR REMOTE TRANSMISSION OF IMAGES
DK337475A DK337475A (en) 1974-07-25 1975-07-24 IMAGE TRANSMISSION SYSTEM
NL7508867A NL7508867A (en) 1974-07-25 1975-07-24 IMAGE TRANSMISSION CHAIN.
JP50089703A JPS5144418A (en) 1974-07-25 1975-07-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7425932A FR2280274A1 (en) 1974-07-25 1974-07-25 Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver

Publications (2)

Publication Number Publication Date
FR2280274A1 true FR2280274A1 (en) 1976-02-20
FR2280274B1 FR2280274B1 (en) 1978-03-24

Family

ID=9141711

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7425932A Granted FR2280274A1 (en) 1974-07-25 1974-07-25 Picture transmission system - video signal in sender converted into binary data signal and reconverted in receiver

Country Status (8)

Country Link
JP (1) JPS5144418A (en)
BE (1) BE830991A (en)
DE (1) DE2532232A1 (en)
DK (1) DK337475A (en)
FR (1) FR2280274A1 (en)
LU (1) LU72998A1 (en)
NL (1) NL7508867A (en)
SE (1) SE7508337L (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754985A1 (en) * 1976-12-09 1978-06-15 Rca Corp DEVICE FOR CONTROLLING AN ELECTRONIC RADIATOR GENERATION SYSTEM
FR2484753A1 (en) * 1980-06-16 1981-12-18 Radioelectrique Comp Ind APPARATUS FOR PHOTOGRAPHIC RECEPTION OF IMAGES TRANSMITTED BY MEANS OF AN ELECTRICAL SIGNAL MODULE
FR2497043A1 (en) * 1980-12-19 1982-06-25 Cit Alcatel Laser imaging system - is controlled by binary image signals converted for modulation of beam intensity to control spot size
EP0098016A2 (en) * 1982-06-30 1984-01-11 Philips Electronics Uk Limited A method of and a circuit arrangement for producing a gamma corrected video signal
FR2583941A1 (en) * 1985-06-21 1986-12-26 Labo Electronique Physique DIGITAL-TO-ANALOG CONVERSION CIRCUIT WITH NON-LINEAR RESPONSE AND CATHODIC SCANNING VISUALIZATION DEVICE EQUIPPED WITH SUCH A CIRCUIT
WO1990003078A1 (en) * 1988-09-15 1990-03-22 Stork X-Cel B.V. Method for varying the response of a print device to an input signal and system and printing apparatus in which this method is applied
EP0475465A2 (en) * 1988-02-25 1992-03-18 Sanyo Electric Co., Ltd. Automatic gamma correction in response to a video signal
EP0571926A1 (en) * 1992-05-25 1993-12-01 Canon Kabushiki Kaisha Image forming system and apparatus constituting the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0780310B2 (en) * 1988-06-20 1995-08-30 三洋電機株式会社 Recording density control method for thermal transfer printer

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
*REVUE GB: "THE ROYAL TELEVISION SOCIETY JOURNAL" VOL. 12, NO. 2, 1968.ARTICLE: "DIGITAL METHODS APPLIED TO TELEVISION" PAR LORD, PAGES 27 A 36) *
*REVUE GB: "THE ROYAL TELEVISION SOCIETY JOURNAL" VOL. 14, NO.11, SEPTEMBRE *
OCTOBRE 1973. ARTICLE: "WHY DIGITAL?-PART 3- THE DIGITAL TELEVISION STUDIO CENTRE" PAR BALDWIN, PAGES 261 A 264 *
REVUE US: "ELECTRONICS", VOL. 45, NO. 20, 25 SEPTEMBRE 1972. ARTICLE: "EMI TESTS DIGITAL TELEVISION CAMERA" PAGES 6E ET 8E *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754985A1 (en) * 1976-12-09 1978-06-15 Rca Corp DEVICE FOR CONTROLLING AN ELECTRONIC RADIATOR GENERATION SYSTEM
FR2373870A1 (en) * 1976-12-09 1978-07-07 Rca Corp ELECTRONIC CANNON CONTROL SYSTEM, ESPECIALLY FOR DISPLAY DEVICES
FR2484753A1 (en) * 1980-06-16 1981-12-18 Radioelectrique Comp Ind APPARATUS FOR PHOTOGRAPHIC RECEPTION OF IMAGES TRANSMITTED BY MEANS OF AN ELECTRICAL SIGNAL MODULE
FR2497043A1 (en) * 1980-12-19 1982-06-25 Cit Alcatel Laser imaging system - is controlled by binary image signals converted for modulation of beam intensity to control spot size
EP0098016A2 (en) * 1982-06-30 1984-01-11 Philips Electronics Uk Limited A method of and a circuit arrangement for producing a gamma corrected video signal
EP0098016A3 (en) * 1982-06-30 1986-08-20 Philips Electronic And Associated Industries Limited A method of and a circuit arrangement for producing a gamma corrected video signal
FR2583941A1 (en) * 1985-06-21 1986-12-26 Labo Electronique Physique DIGITAL-TO-ANALOG CONVERSION CIRCUIT WITH NON-LINEAR RESPONSE AND CATHODIC SCANNING VISUALIZATION DEVICE EQUIPPED WITH SUCH A CIRCUIT
EP0206419A1 (en) * 1985-06-21 1986-12-30 Laboratoires D'electronique Philips Non-linear digital-analogous conversion circuit and CRT display device equipped with such a circuit
EP0475465A2 (en) * 1988-02-25 1992-03-18 Sanyo Electric Co., Ltd. Automatic gamma correction in response to a video signal
EP0475465A3 (en) * 1988-02-25 1993-09-22 Sanyo Electric Co., Ltd. Automatic exposure adjustment or automatic gamma correction in response to a video signal
WO1990003078A1 (en) * 1988-09-15 1990-03-22 Stork X-Cel B.V. Method for varying the response of a print device to an input signal and system and printing apparatus in which this method is applied
EP0571926A1 (en) * 1992-05-25 1993-12-01 Canon Kabushiki Kaisha Image forming system and apparatus constituting the same
EP0902389A1 (en) * 1992-05-25 1999-03-17 Canon Kabushiki Kaisha Image forming method and apparatus
US5984454A (en) * 1992-05-25 1999-11-16 Canon Kabushiki Kaisha Image forming system and apparatus constituting the same
US6612675B1 (en) 1992-05-25 2003-09-02 Canon Kabushiki Kaisha Image forming system and apparatus constituting the same

Also Published As

Publication number Publication date
BE830991A (en) 1976-01-05
DE2532232A1 (en) 1976-02-05
SE7508337L (en) 1976-01-26
DK337475A (en) 1976-01-26
NL7508867A (en) 1976-01-27
FR2280274B1 (en) 1978-03-24
JPS5144418A (en) 1976-04-16
LU72998A1 (en) 1976-07-01

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Legal Events

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