WO1997013243A3 - Sound system for compact distribution print - Google Patents

Sound system for compact distribution print Download PDF

Info

Publication number
WO1997013243A3
WO1997013243A3 PCT/US1996/015911 US9615911W WO9713243A3 WO 1997013243 A3 WO1997013243 A3 WO 1997013243A3 US 9615911 W US9615911 W US 9615911W WO 9713243 A3 WO9713243 A3 WO 9713243A3
Authority
WO
WIPO (PCT)
Prior art keywords
khz
output
photocell
per minute
soundtrack
Prior art date
Application number
PCT/US1996/015911
Other languages
French (fr)
Other versions
WO1997013243A2 (en
Inventor
Clay Davis
Original Assignee
Todd Ao 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
Priority claimed from US08/697,606 external-priority patent/US5621490A/en
Application filed by Todd Ao Corp filed Critical Todd Ao Corp
Priority to AU73896/96A priority Critical patent/AU7389696A/en
Publication of WO1997013243A2 publication Critical patent/WO1997013243A2/en
Publication of WO1997013243A3 publication Critical patent/WO1997013243A3/en

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film
    • 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
    • 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
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/46—Controlling, regulating, or indicating speed

Abstract

A system is provided for creating sound represented by the varying width of a motion picture film soundtrack, which provides a 'flat' frequency response up to 12.5 kHz with maximum phase coherence, even though the film speed is only 62 % to 78 % of the present speed of 90 feet per minute (27 meters per minute). The projector photocell which detects a slit-shaped area of light passing throug the soundtrack, produces an output that is amplifed so the amplification is progressively greater at higher frequencies, with the gain at 12.5 kHz being at least 6 dB greater than at 1 kHz. A photocell is selected whose output at 12.5 kHz is within 1 dB of its output at 1 kHz for light of a wavelength of substantially 1000 nanometers.
PCT/US1996/015911 1995-10-04 1996-10-02 Sound system for compact distribution print WO1997013243A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73896/96A AU7389696A (en) 1995-10-04 1996-10-02 Sound system for compact distribution print

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US494595P 1995-10-04 1995-10-04
US60/004,945 1995-10-04
US08/697,606 US5621490A (en) 1996-08-26 1996-08-26 Sound system for compact distribution print
US08/697,606 1996-08-26

Publications (2)

Publication Number Publication Date
WO1997013243A2 WO1997013243A2 (en) 1997-04-10
WO1997013243A3 true WO1997013243A3 (en) 1997-05-29

Family

ID=26673693

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1996/015911 WO1997013243A2 (en) 1995-10-04 1996-10-02 Sound system for compact distribution print

Country Status (2)

Country Link
AU (1) AU7389696A (en)
WO (1) WO1997013243A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032172A (en) * 1910-03-22 1912-07-09 Ernesto Zollinger Process for reducing the size of pictures on kinematograph-films and of projecting such pictures to their normal proportions.
US3583803A (en) * 1968-12-16 1971-06-08 Anthony L Cole Motion picture process and motion picture film having wide-screen aspect ratio frames
US3865738A (en) * 1974-01-21 1975-02-11 Miklos Lente Method of making motion pictures
US5479223A (en) * 1993-01-29 1995-12-26 Duo-Sprocket, Inc. Film conversion sprocket
US5534954A (en) * 1991-12-12 1996-07-09 United Artists Theatre Circuit, Inc. Motion picture system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1032172A (en) * 1910-03-22 1912-07-09 Ernesto Zollinger Process for reducing the size of pictures on kinematograph-films and of projecting such pictures to their normal proportions.
US3583803A (en) * 1968-12-16 1971-06-08 Anthony L Cole Motion picture process and motion picture film having wide-screen aspect ratio frames
US3865738A (en) * 1974-01-21 1975-02-11 Miklos Lente Method of making motion pictures
US5534954A (en) * 1991-12-12 1996-07-09 United Artists Theatre Circuit, Inc. Motion picture system
US5479223A (en) * 1993-01-29 1995-12-26 Duo-Sprocket, Inc. Film conversion sprocket

Also Published As

Publication number Publication date
WO1997013243A2 (en) 1997-04-10
AU7389696A (en) 1997-04-28

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