FR2376488A1 - Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping - Google Patents

Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping

Info

Publication number
FR2376488A1
FR2376488A1 FR7639520A FR7639520A FR2376488A1 FR 2376488 A1 FR2376488 A1 FR 2376488A1 FR 7639520 A FR7639520 A FR 7639520A FR 7639520 A FR7639520 A FR 7639520A FR 2376488 A1 FR2376488 A1 FR 2376488A1
Authority
FR
France
Prior art keywords
turntable
signal
stylus
stop
record player
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
FR7639520A
Other languages
French (fr)
Other versions
FR2376488B1 (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 FR7639520A priority Critical patent/FR2376488A1/en
Publication of FR2376488A1 publication Critical patent/FR2376488A1/en
Application granted granted Critical
Publication of FR2376488B1 publication Critical patent/FR2376488B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers without distortion of the input signal
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
    • H03G3/341—Muting when no signals or only weak signals are present
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions

Abstract

An electronic control unit is used to start or stop the turntable of a record player. It has no mechanical parts as it uses electrical signals from the cartridge and a push-button. The electronic unit (1) interfaces between the cartridge or stylus (2) and the components (5, 6, 7) of the turntable such as motor, amplifier. It has four modules (E1, E2, E3, E4). The first module (E1) extracts part of the signal from the cartridge (2). The second module (E2) compares the signal with a reference (4). If the signal is greater than a threshold then a time delay module (3) is excited. Another module (E4) is used to operate the components (5, 6, 7) of the turntable. The signal (2') from the cartridge is used to maintain operation of the turntable. The signal (3) from a switch is used to start the turntable.
FR7639520A 1976-12-28 1976-12-28 Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping Granted FR2376488A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7639520A FR2376488A1 (en) 1976-12-28 1976-12-28 Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7639520A FR2376488A1 (en) 1976-12-28 1976-12-28 Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping

Publications (2)

Publication Number Publication Date
FR2376488A1 true FR2376488A1 (en) 1978-07-28
FR2376488B1 FR2376488B1 (en) 1979-04-20

Family

ID=9181704

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7639520A Granted FR2376488A1 (en) 1976-12-28 1976-12-28 Stop-start control for turntable of record player - has electronic interface unit supplied by signal from stylus for stopping

Country Status (1)

Country Link
FR (1) FR2376488A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022815B (en) * 1953-03-06 1958-01-16 Daniel Tefi Apparatebau Modulation-controlled switch-off device for sound reproduction devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1022815B (en) * 1953-03-06 1958-01-16 Daniel Tefi Apparatebau Modulation-controlled switch-off device for sound reproduction devices

Also Published As

Publication number Publication date
FR2376488B1 (en) 1979-04-20

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Legal Events

Date Code Title Description
ST Notification of lapse