IT7849669A0 - DEVICE FOR THE EXPLORATION OF VARIABLE AREA OPTICAL SOUND COLUMNS - Google Patents

DEVICE FOR THE EXPLORATION OF VARIABLE AREA OPTICAL SOUND COLUMNS

Info

Publication number
IT7849669A0
IT7849669A0 IT7849669A IT4966978A IT7849669A0 IT 7849669 A0 IT7849669 A0 IT 7849669A0 IT 7849669 A IT7849669 A IT 7849669A IT 4966978 A IT4966978 A IT 4966978A IT 7849669 A0 IT7849669 A0 IT 7849669A0
Authority
IT
Italy
Prior art keywords
exploration
variable area
area optical
optical sound
sound columns
Prior art date
Application number
IT7849669A
Other languages
Italian (it)
Other versions
IT1192315B (en
Original Assignee
Dolby Lab Licensing Corp
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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Publication of IT7849669A0 publication Critical patent/IT7849669A0/en
Application granted granted Critical
Publication of IT1192315B publication Critical patent/IT1192315B/en

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/003—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent
    • G11B7/0032—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with webs, filaments or wires, e.g. belts, spooled tapes or films of quasi-infinite extent for moving-picture soundtracks, i.e. cinema
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/024—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by means of diode-array scanning
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/24—Signal processing not specific to the method of recording or reproducing; Circuits therefor for reducing noise
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Optical Recording Or Reproduction (AREA)
IT49669/78A 1977-06-03 1978-06-02 DEVICE FOR THE EXPLORATION OF SOUND COLUMNS WITH VARIABLE AREA IT1192315B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80304277A 1977-06-03 1977-06-03

Publications (2)

Publication Number Publication Date
IT7849669A0 true IT7849669A0 (en) 1978-06-02
IT1192315B IT1192315B (en) 1988-03-31

Family

ID=25185428

Family Applications (1)

Application Number Title Priority Date Filing Date
IT49669/78A IT1192315B (en) 1977-06-03 1978-06-02 DEVICE FOR THE EXPLORATION OF SOUND COLUMNS WITH VARIABLE AREA

Country Status (7)

Country Link
JP (1) JPS542703A (en)
CA (1) CA1124402A (en)
DE (1) DE2823853A1 (en)
FR (1) FR2393342A1 (en)
GB (1) GB1598113A (en)
IT (1) IT1192315B (en)
NL (1) NL189322C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4577305A (en) * 1983-03-14 1986-03-18 Dolby Laboratories Licensing Corporation Stereophonic motion picture photographic sound-tracks compatible with different sound projection formats and record and playback apparatus therefore
AU2002214955A1 (en) * 2000-09-11 2002-03-22 Bts Holding International B.V. Device and method for reproducing photographic sound recordings

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR885556A (en) * 1941-08-30 1943-09-20 Philips Nv Method for the electro-optical exploration of oscillation recordings
BE789499A (en) * 1971-09-30 1973-01-15 Siemens Ag PROCESS FOR SEQUENTIALLY RECORDING ANALOGUE DATA ON A MEMORIZATION TAPE
US3848095A (en) * 1972-12-20 1974-11-12 I O Metrics Corp Three dimensional electro-optical retrieval system
US3959784A (en) * 1974-12-23 1976-05-25 Actron High speed optical read-out of data stored in an array
DE2543276A1 (en) * 1975-09-27 1977-03-31 Licentia Gmbh Reproduction system for data carried on tapes - has monochromatic light source and pick-up units for optical signals to be converted to audio output

Also Published As

Publication number Publication date
IT1192315B (en) 1988-03-31
CA1124402A (en) 1982-05-25
DE2823853A1 (en) 1978-12-14
JPS6250893B2 (en) 1987-10-27
FR2393342B1 (en) 1984-11-16
GB1598113A (en) 1981-09-16
DE2823853C2 (en) 1988-05-19
NL7805719A (en) 1978-12-05
NL189322B (en) 1992-10-01
JPS542703A (en) 1979-01-10
FR2393342A1 (en) 1978-12-29
NL189322C (en) 1993-03-01

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950629