FR2390798A1 - Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit - Google Patents

Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit

Info

Publication number
FR2390798A1
FR2390798A1 FR7714047A FR7714047A FR2390798A1 FR 2390798 A1 FR2390798 A1 FR 2390798A1 FR 7714047 A FR7714047 A FR 7714047A FR 7714047 A FR7714047 A FR 7714047A FR 2390798 A1 FR2390798 A1 FR 2390798A1
Authority
FR
France
Prior art keywords
circuit
recorder
programmed control
magnetic tape
low frequencies
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
FR7714047A
Other languages
French (fr)
Other versions
FR2390798B3 (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.)
SAUVET ROBERT
Original Assignee
SAUVET ROBERT
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 SAUVET ROBERT filed Critical SAUVET ROBERT
Priority to FR7714047A priority Critical patent/FR2390798A1/en
Publication of FR2390798A1 publication Critical patent/FR2390798A1/en
Application granted granted Critical
Publication of FR2390798B3 publication Critical patent/FR2390798B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/22—Means responsive to presence or absence of recorded information signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B5/00—Electrically-operated educational appliances
    • G09B5/04—Electrically-operated educational appliances with audible presentation of the material to be studied
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B15/026—Control of operating function, e.g. switching from recording to reproducing by using processor, e.g. microcomputer

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Business, Economics & Management (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Relay Circuits (AREA)

Abstract

Electrical units are started and stopped by programmed control operated from a single track magnetic tape recording. Such a system is used where recorded commentaries accompany optical slides. A cassette recorder has outlets for microphone and loudspeaker and remote control switch. The power input for the recorder is supplied via circuits which provide power for a given time period set by switching. Programmed control is provided by a circuit which senses low frequencies from the recorder. An optical coupler provides coupling to a transistor to fire a thyristor. This operates bistables to provide timing to control relay in power line to recorder.
FR7714047A 1977-05-09 1977-05-09 Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit Granted FR2390798A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7714047A FR2390798A1 (en) 1977-05-09 1977-05-09 Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7714047A FR2390798A1 (en) 1977-05-09 1977-05-09 Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit

Publications (2)

Publication Number Publication Date
FR2390798A1 true FR2390798A1 (en) 1978-12-08
FR2390798B3 FR2390798B3 (en) 1980-02-22

Family

ID=9190531

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7714047A Granted FR2390798A1 (en) 1977-05-09 1977-05-09 Programmed control from single track magnetic tape recording - has circuit sensing low frequencies to operate relay circuit

Country Status (1)

Country Link
FR (1) FR2390798A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486288A1 (en) * 1980-07-01 1982-01-08 Kanny Louis ELECTRONIC DEVICE FOR AUTOMATICALLY STARTING AND STOPPING THE WORD OF A MAGNETOPHONE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2486288A1 (en) * 1980-07-01 1982-01-08 Kanny Louis ELECTRONIC DEVICE FOR AUTOMATICALLY STARTING AND STOPPING THE WORD OF A MAGNETOPHONE
WO1982000217A1 (en) * 1980-07-01 1982-01-21 L Kanny Electronic device for the automatic start-stop of a tape recorder by the speech

Also Published As

Publication number Publication date
FR2390798B3 (en) 1980-02-22

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