GB1274859A - Cinematographic sound films - Google Patents
Cinematographic sound filmsInfo
- Publication number
- GB1274859A GB1274859A GB6001068A GB6001068A GB1274859A GB 1274859 A GB1274859 A GB 1274859A GB 6001068 A GB6001068 A GB 6001068A GB 6001068 A GB6001068 A GB 6001068A GB 1274859 A GB1274859 A GB 1274859A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sound
- film
- head
- drum
- frame
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
1,274,859. Recording and playback of cinefilm sound tracks. N. A. JAMES. 17 Dec., 1969 [17 Dec., 1968/, No. 60010/68. Heading G5R. In a sound film, the sound corresponding to each frame is recorded on the film adjacent that frame to facilitate editing. During filming, Fig. 1 this is achieved by first temporarily recording the sound on a magnetic drum 5, disc or tape while the corresponding frame is being exposed and then, after an interval during which the corresponding frame of the film has attained a certain velocity, transferring the sound recording from head 7 to the film at 8 (as a magnetic or optical modulation). During projection, Fig. 2 - (not shown), of the film, first the sound track is read (3<SP>1</SP>) and transferred to e.g., a magnetic drum (6<SP>1</SP>) and then, when the corresponding frame reaches the projection gate (A), the sound is reproduced from the drum and transmitted to an amplifier and a speaker (9<SP>1</SP>). In the embodiments, the heads are positioned so that sound is read after a part revolution of the drum, an erase head 10 being provided. In the projector, the position of the pick-up head (7<SP>1</SP>) is adjustable, and a second head (11<SP>1</SP>) is provided in such a position as to produce soundpicture separation of e.g. 18 or 56 frames, as required by conventional films.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6001068A GB1274859A (en) | 1968-12-17 | 1968-12-17 | Cinematographic sound films |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6001068A GB1274859A (en) | 1968-12-17 | 1968-12-17 | Cinematographic sound films |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1274859A true GB1274859A (en) | 1972-05-17 |
Family
ID=10484834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6001068A Expired GB1274859A (en) | 1968-12-17 | 1968-12-17 | Cinematographic sound films |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1274859A (en) |
-
1968
- 1968-12-17 GB GB6001068A patent/GB1274859A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |