FR2452838A1 - Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds - Google Patents

Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds

Info

Publication number
FR2452838A1
FR2452838A1 FR7908091A FR7908091A FR2452838A1 FR 2452838 A1 FR2452838 A1 FR 2452838A1 FR 7908091 A FR7908091 A FR 7908091A FR 7908091 A FR7908091 A FR 7908091A FR 2452838 A1 FR2452838 A1 FR 2452838A1
Authority
FR
France
Prior art keywords
recorded
channel
signal
signals
sounds
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
FR7908091A
Other languages
French (fr)
Other versions
FR2452838B1 (en
Inventor
Eric Spitz
Claude Tinet
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7908091A priority Critical patent/FR2452838A1/en
Publication of FR2452838A1 publication Critical patent/FR2452838A1/en
Application granted granted Critical
Publication of FR2452838B1 publication Critical patent/FR2452838B1/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
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
    • G11B17/005—Programmed access to indexed parts of tracks of operating discs, by guiding the disc
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B21/00—Head arrangements not specific to the method of recording or reproducing
    • G11B21/02—Driving or moving of heads
    • G11B21/08—Track changing or selecting during transducing operation
    • G11B21/081—Access to indexed tracks or parts of continuous track
    • G11B21/083—Access to indexed tracks or parts of continuous track on discs
    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks

Landscapes

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

Abstract

A number of sound signals are recorded by pulse code modulation on a videodisc, each signal being separated from each adjacent signal by a unique subcarrier signal (Fm) recorded on a full turn of the disc. A number of sound signals are recorded on a single multiplex channel, each channel being identified by a channel signal Yn) and the channel signals being recorded in respective disc sectors between recorded synchronising signals (SY). The desired channel and subcarrier signal are selected for the required sound signal by respective selection switches. A reading head then rapidly radially scans the disc until the selected subcarrier is detected by a corresponding filter. Normal head reading then commences. A clock driven ring counter receives and is reset by the synchronising pulses and then passes the selected channel signals to a demodulator, the relevant ring counter output having been selected by the channel slection switch.
FR7908091A 1979-03-30 1979-03-30 Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds Granted FR2452838A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7908091A FR2452838A1 (en) 1979-03-30 1979-03-30 Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7908091A FR2452838A1 (en) 1979-03-30 1979-03-30 Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds

Publications (2)

Publication Number Publication Date
FR2452838A1 true FR2452838A1 (en) 1980-10-24
FR2452838B1 FR2452838B1 (en) 1982-08-20

Family

ID=9223775

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908091A Granted FR2452838A1 (en) 1979-03-30 1979-03-30 Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds

Country Status (1)

Country Link
FR (1) FR2452838A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490389A1 (en) * 1980-09-12 1982-03-19 Victor Company Of Japan HIGH SPEED SEARCH SYSTEM FOR ROTARY RECORDING MEDIA REPRODUCING APPARATUS
FR2500675A1 (en) * 1981-02-26 1982-08-27 Victor Company Of Japan Video disc player head - detects video data and reference signals recorded as variations in geometrical configuration on the surface of a disc
FR2500673A1 (en) * 1981-02-26 1982-08-27 Victor Company Of Japan Video disc with reference signal tracks - has data and three tracking error prevention signals recorded as of variations in geometrical shape of depressions on surface
WO1984003583A1 (en) * 1983-03-07 1984-09-13 Storage Technology Partners System for sensing the rotational position of a rotating disk having coarse seek tracks
FR2558630A1 (en) * 1984-01-23 1985-07-26 Logivision Method and device for recording data on a recording medium such as a digital disk.
EP0152142A2 (en) * 1984-02-10 1985-08-21 Koninklijke Philips Electronics N.V. Method for reproducing information from an optically readable record carrier and apparatus for use in said method
US4819218A (en) * 1986-12-19 1989-04-04 Eastman Kodak Company Quasi-constant linear-velocity disk having corresponding radii of adjacent annular zones related by a rational number for distributing prerecorded indicia to form a coherent write clock signal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261586A1 (en) * 1974-02-15 1975-09-12 Philips Nv
JPS5220812A (en) * 1975-08-11 1977-02-17 Casio Comput Co Ltd Recording system of information
US4056830A (en) * 1974-03-15 1977-11-01 Burroughs Corporation Utilizing data for transducer positioning
FR2397037A1 (en) * 1977-07-08 1979-02-02 Ibm VIDEO RECORDING ON DISC AND PLAYBACK DEVICE WITH APPLICATION

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2261586A1 (en) * 1974-02-15 1975-09-12 Philips Nv
US4056830A (en) * 1974-03-15 1977-11-01 Burroughs Corporation Utilizing data for transducer positioning
JPS5220812A (en) * 1975-08-11 1977-02-17 Casio Comput Co Ltd Recording system of information
FR2397037A1 (en) * 1977-07-08 1979-02-02 Ibm VIDEO RECORDING ON DISC AND PLAYBACK DEVICE WITH APPLICATION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ABJP/71 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2490389A1 (en) * 1980-09-12 1982-03-19 Victor Company Of Japan HIGH SPEED SEARCH SYSTEM FOR ROTARY RECORDING MEDIA REPRODUCING APPARATUS
FR2500675A1 (en) * 1981-02-26 1982-08-27 Victor Company Of Japan Video disc player head - detects video data and reference signals recorded as variations in geometrical configuration on the surface of a disc
FR2500673A1 (en) * 1981-02-26 1982-08-27 Victor Company Of Japan Video disc with reference signal tracks - has data and three tracking error prevention signals recorded as of variations in geometrical shape of depressions on surface
WO1984003583A1 (en) * 1983-03-07 1984-09-13 Storage Technology Partners System for sensing the rotational position of a rotating disk having coarse seek tracks
FR2558630A1 (en) * 1984-01-23 1985-07-26 Logivision Method and device for recording data on a recording medium such as a digital disk.
EP0152142A2 (en) * 1984-02-10 1985-08-21 Koninklijke Philips Electronics N.V. Method for reproducing information from an optically readable record carrier and apparatus for use in said method
EP0152142A3 (en) * 1984-02-10 1985-09-25 N.V. Philips' Gloeilampenfabrieken System for reproducing information from an optically readable record carrier, apparatus for use in said system, and record carrier for use in said system
US4819218A (en) * 1986-12-19 1989-04-04 Eastman Kodak Company Quasi-constant linear-velocity disk having corresponding radii of adjacent annular zones related by a rational number for distributing prerecorded indicia to form a coherent write clock signal

Also Published As

Publication number Publication date
FR2452838B1 (en) 1982-08-20

Similar Documents

Publication Publication Date Title
US3936595A (en) Signal transmission system for transmitting programed information such as programed instruction
US3988528A (en) Signal transmission system for transmitting a plurality of information signals through a plurality of transmission channels
US5353168A (en) Recording and reproducing system using time division multiplexing
SE451643B (en) SET AND DEVICE FOR REGISTERING A DIGITALIZED INFORMATION SIGNAL, AND A SET AND DEVICE FOR REPRODUCING A MODULATED, CODED, DIGITALIZED INFORMATION SIGNAL
EP0381807A3 (en) Method and apparatus for recording and reproducing information including plural channel audio signals
GB1494675A (en) Audio record and playback unit therefor
FR2452838A1 (en) Video disc sound recording - uses TDM to separate sounds recorded on different channels and subcarrier reference signals to discriminate between sounds
EP0292740A3 (en) Recording and reproducing apparatus
EP0125026A3 (en) An apparatus for recording a video signal
AU601969B2 (en) Recording and reproducing a time code signal together with digital video and audio signals
KR950003632B1 (en) Image player
EP0355721A3 (en) Reproducing apparatus with tracking control means
ES8900076A1 (en) PCM audio signal recording and/or reproducing apparatus.
AU585615B2 (en) PCM audio signal recording and/or reproducing apparatus
KR910003594A (en) Video disc player with clamp circuit for MUSE signal
JPS54109815A (en) Recorder-reproducer of video signal
SU1119069A1 (en) Digital magnetic video recording device
SU699547A1 (en) Apparatus for magnetic recording and reproducing of information
JP2598989B2 (en) Audio information selection and / or display circuit for high-definition video playback system
SU1059608A1 (en) Method of multichannel reproducing of signals
KR970006821B1 (en) Bilingual compact disc player
SU1483482A1 (en) Device for multichannel magnetic recording and playback of pulse train
SU1205191A1 (en) Device for checking magnetic record
JPS59140602A (en) Recording and reproducing system
KR930009686B1 (en) Track jump circuit of laser disk player

Legal Events

Date Code Title Description
ST Notification of lapse