GB763341A - Improvements in and relating to electrical reproducing apparatus - Google Patents

Improvements in and relating to electrical reproducing apparatus

Info

Publication number
GB763341A
GB763341A GB1583353A GB1583353A GB763341A GB 763341 A GB763341 A GB 763341A GB 1583353 A GB1583353 A GB 1583353A GB 1583353 A GB1583353 A GB 1583353A GB 763341 A GB763341 A GB 763341A
Authority
GB
United Kingdom
Prior art keywords
recorded signals
recorded
reproducing apparatus
signals
kilocycles
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.)
Expired
Application number
GB1583353A
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.)
THEODORE DAVID CONWAY
Original Assignee
THEODORE DAVID CONWAY
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 THEODORE DAVID CONWAY filed Critical THEODORE DAVID CONWAY
Priority to GB1583353A priority Critical patent/GB763341A/en
Publication of GB763341A publication Critical patent/GB763341A/en
Expired 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

Landscapes

  • Electrically Operated Instructional Devices (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)

Abstract

763,341. Combined sound and picture apparatus. JOHNSON, A. E., and CONWAY, T. D. Sept. 9, 1954 [June 9, 1953], No. 15833/53. Class 40 (2). In a magnetic reproducing apparatus for recorded signals of a frequency within a predetermined range, control means are provided to respond to recorded signals outside the frequency range of the recorded signals, for performing a desired operation in relation to the recorded signals, such as the illumination of associated pictures. In the embodiment described, four different signal control frequencies of 9, 9.5, 10 and 10.5 kilocycles/sec. are recorded on a magnetic record whose speech frequency range is 0 to 8 kilocycles/sec. The control signals are passed via band-pass filters 15, 16, 17 and 18 and rectifiers 19 to relays 20 which operate the switching and illumination of pictures associated with the speech on the record.
GB1583353A 1953-06-09 1953-06-09 Improvements in and relating to electrical reproducing apparatus Expired GB763341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1583353A GB763341A (en) 1953-06-09 1953-06-09 Improvements in and relating to electrical reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1583353A GB763341A (en) 1953-06-09 1953-06-09 Improvements in and relating to electrical reproducing apparatus

Publications (1)

Publication Number Publication Date
GB763341A true GB763341A (en) 1956-12-12

Family

ID=10066353

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1583353A Expired GB763341A (en) 1953-06-09 1953-06-09 Improvements in and relating to electrical reproducing apparatus

Country Status (1)

Country Link
GB (1) GB763341A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983793A (en) * 1958-05-20 1961-05-09 Joseph H Weber Dictation system
US3026634A (en) * 1959-02-11 1962-03-27 Linguatronics Inc Audio-visual electronic instructor
US3075303A (en) * 1961-08-08 1963-01-29 Daniel R Butterly Educational device
US3210864A (en) * 1962-12-06 1965-10-12 Iii James A Tillotson Electronic device and method for testing and teaching
US3480738A (en) * 1966-05-02 1969-11-25 Univ Southern Illinois Image display apparatus and methods
US3481052A (en) * 1967-10-09 1969-12-02 Dorsett Ind Inc Aural/visual information system
US3591731A (en) * 1968-09-23 1971-07-06 Leigh Prod Inc Method and apparatus for recording real time superimposed on other information
US3798387A (en) * 1971-10-04 1974-03-19 B Gallagher Recording system for judicial proceedings

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2983793A (en) * 1958-05-20 1961-05-09 Joseph H Weber Dictation system
US3026634A (en) * 1959-02-11 1962-03-27 Linguatronics Inc Audio-visual electronic instructor
US3075303A (en) * 1961-08-08 1963-01-29 Daniel R Butterly Educational device
US3210864A (en) * 1962-12-06 1965-10-12 Iii James A Tillotson Electronic device and method for testing and teaching
US3480738A (en) * 1966-05-02 1969-11-25 Univ Southern Illinois Image display apparatus and methods
US3481052A (en) * 1967-10-09 1969-12-02 Dorsett Ind Inc Aural/visual information system
US3591731A (en) * 1968-09-23 1971-07-06 Leigh Prod Inc Method and apparatus for recording real time superimposed on other information
US3798387A (en) * 1971-10-04 1974-03-19 B Gallagher Recording system for judicial proceedings

Similar Documents

Publication Publication Date Title
GB763341A (en) Improvements in and relating to electrical reproducing apparatus
GB652340A (en) Improvements in or relating to sound recording and reproducing apparatus
AU164044B2 (en) Apparatus for magnetic sound-recording and sound reproduction
AU162725B2 (en) Synchronization device for magnetic sound recorders
CA495670A (en) Magnetic recording and reproducing apparatus
GB758549A (en) A method for measuring magnetic field intensities
AU728952A (en) Apparatus for magnetic sound-recording and sound reproduction
GB967064A (en) Improvements relating to stereophonic sound reproducing apparatus
AU2022153A (en) Synchronization device for magnetic sound recorders
CA481677A (en) Magnetic wire sound recording and reproducing apparatus
AU209417B2 (en) Magnetic transducer head for high frequency signals
CA486687A (en) Magnetic recording and reproducing system
CA496276A (en) Magnetic recording and reproducing
GB805392A (en) Improvements in or relating to microphone units
GB640645A (en) Improvements relating to the operation of projectors using film strip
CA481753A (en) Means for and method of producing time modulated signal impulses
GB798929A (en) Improvements in and relating to broad band magnetic tape recording and/or reproducing apparatus
AU1130552A (en) Video signal recording and image reproducing apparatus
AU157800B2 (en) Improvements in or relating to magnetic sound recorders and reproducers
CA479958A (en) Audio frequency amplifier
CA492251A (en) Apparatus for playing gramophone records
FR1116698A (en) Editing for magnetic recorders and reproducers
AU154700B2 (en) Improvements relating to magnetic sound recording or reproducing apparatus
CA495800A (en) Automatic sound recorder
CA496431A (en) Support for sound reproducing apparatus