JPS5286010A - Pre-emphasis circuit - Google Patents

Pre-emphasis circuit

Info

Publication number
JPS5286010A
JPS5286010A JP253376A JP253376A JPS5286010A JP S5286010 A JPS5286010 A JP S5286010A JP 253376 A JP253376 A JP 253376A JP 253376 A JP253376 A JP 253376A JP S5286010 A JPS5286010 A JP S5286010A
Authority
JP
Japan
Prior art keywords
emphasis circuit
sinal
resistors
collector
transistor
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.)
Pending
Application number
JP253376A
Other languages
Japanese (ja)
Inventor
Minoru Morio
Masahiro Kanbara
Yoshimaru Maruno
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
Priority to JP253376A priority Critical patent/JPS5286010A/en
Priority to GB98177A priority patent/GB1538692A/en
Priority to NL7700227A priority patent/NL7700227A/en
Priority to DE19772700874 priority patent/DE2700874A1/en
Priority to AT13977A priority patent/AT351088B/en
Priority to FR7700768A priority patent/FR2337978A1/en
Publication of JPS5286010A publication Critical patent/JPS5286010A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/91—Television signal processing therefor
    • H04N5/92—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N5/923—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback using preemphasis of the signal before modulation and deemphasis of the signal after demodulation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/0007—Circuits or methods for reducing noise, for correction of distortion, or for changing density of recorded information
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
    • H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
    • H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
    • H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

PURPOSE: S/N ratio of video sinal is improved by simple arrangement fabricating diodes and resistors between the collector of transistor and power supply.
COPYRIGHT: (C)1977,JPO&Japio
JP253376A 1976-01-12 1976-01-12 Pre-emphasis circuit Pending JPS5286010A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP253376A JPS5286010A (en) 1976-01-12 1976-01-12 Pre-emphasis circuit
GB98177A GB1538692A (en) 1976-01-12 1977-01-11 Video signal processing circuit
NL7700227A NL7700227A (en) 1976-01-12 1977-01-11 VIDEO SIGNAL EDITING CIRCUIT.
DE19772700874 DE2700874A1 (en) 1976-01-12 1977-01-11 VIDEO SIGNAL PROCESSING CIRCUIT
AT13977A AT351088B (en) 1976-01-12 1977-01-12 VIDEO SIGNAL PROCESSING CIRCUIT
FR7700768A FR2337978A1 (en) 1976-01-12 1977-01-12 VIDEO SIGNAL PROCESSING CIRCUIT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP253376A JPS5286010A (en) 1976-01-12 1976-01-12 Pre-emphasis circuit

Publications (1)

Publication Number Publication Date
JPS5286010A true JPS5286010A (en) 1977-07-16

Family

ID=11532008

Family Applications (1)

Application Number Title Priority Date Filing Date
JP253376A Pending JPS5286010A (en) 1976-01-12 1976-01-12 Pre-emphasis circuit

Country Status (6)

Country Link
JP (1) JPS5286010A (en)
AT (1) AT351088B (en)
DE (1) DE2700874A1 (en)
FR (1) FR2337978A1 (en)
GB (1) GB1538692A (en)
NL (1) NL7700227A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2044587A (en) * 1979-03-14 1980-10-15 Rca Corp Preemphasis and clipping apparatus for reducing distortions
DE3269852D1 (en) * 1981-10-14 1986-04-17 Telefunken Fernseh & Rundfunk Circuit for reducing the rise-time of the flanks of a video signal, in particular for a video recorder
DE3307014A1 (en) * 1983-02-28 1984-08-30 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Circuit for improving the image sharpness in a video recorder
DE3430480C2 (en) * 1984-08-18 1993-11-18 Grundig Emv Circuit for predistorting a video signal in frequency-modulated recording

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7204290A (en) * 1972-03-30 1973-03-26

Also Published As

Publication number Publication date
DE2700874A1 (en) 1977-07-21
AT351088B (en) 1979-07-10
NL7700227A (en) 1977-07-14
ATA13977A (en) 1978-12-15
FR2337978A1 (en) 1977-08-05
GB1538692A (en) 1979-01-24

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