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FR2160263B1 - - Google Patents

Info

Publication number
FR2160263B1
FR2160263B1 FR7140936A FR7140936A FR2160263B1 FR 2160263 B1 FR2160263 B1 FR 2160263B1 FR 7140936 A FR7140936 A FR 7140936A FR 7140936 A FR7140936 A FR 7140936A FR 2160263 B1 FR2160263 B1 FR 2160263B1
Authority
FR
France
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
FR7140936A
Other languages
French (fr)
Other versions
FR2160263A1 (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7140936A priority Critical patent/FR2160263B1/fr
Publication of FR2160263A1 publication Critical patent/FR2160263A1/fr
Application granted granted Critical
Publication of FR2160263B1 publication Critical patent/FR2160263B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
    • 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
    • H04N1/4072—Control or modification of tonal gradation or of extreme levels, e.g. background level dependent on the contents of the original

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR7140936A 1971-11-16 1971-11-16 Expired FR2160263B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7140936A FR2160263B1 (en) 1971-11-16 1971-11-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7140936A FR2160263B1 (en) 1971-11-16 1971-11-16

Publications (2)

Publication Number Publication Date
FR2160263A1 FR2160263A1 (en) 1973-06-29
FR2160263B1 true FR2160263B1 (en) 1978-01-06

Family

ID=9085829

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140936A Expired FR2160263B1 (en) 1971-11-16 1971-11-16

Country Status (1)

Country Link
FR (1) FR2160263B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1201797A (en) * 1983-01-20 1986-03-11 Frederick H.K. Rambow Circuit for controlling the magnitude of amplification of signals produced by a borehole televiewer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3537025A (en) * 1967-11-06 1970-10-27 Bell Telephone Labor Inc Unitary circuit for clamping,amplification and automatic gain control

Also Published As

Publication number Publication date
FR2160263A1 (en) 1973-06-29

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Legal Events

Date Code Title Description
ST Notification of lapse