US2024563A - Process for the reproduction of sounds recorded by means of photograms - Google Patents
Process for the reproduction of sounds recorded by means of photograms Download PDFInfo
- Publication number
- US2024563A US2024563A US466535A US46653530A US2024563A US 2024563 A US2024563 A US 2024563A US 466535 A US466535 A US 466535A US 46653530 A US46653530 A US 46653530A US 2024563 A US2024563 A US 2024563A
- Authority
- US
- United States
- Prior art keywords
- reproduction
- photograms
- sounds recorded
- recorded
- rheophores
- 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 - Lifetime
Links
- 238000000034 method Methods 0.000 title description 8
- 239000000839 emulsion Substances 0.000 description 5
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 229920002160 Celluloid Polymers 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- DSLZVSRJTYRBFB-LLEIAEIESA-N D-glucaric acid Chemical compound OC(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O DSLZVSRJTYRBFB-LLEIAEIESA-N 0.000 description 1
- 239000001828 Gelatine Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- HWLDNSXPUQTBOD-UHFFFAOYSA-N platinum-iridium alloy Chemical compound [Ir].[Pt] HWLDNSXPUQTBOD-UHFFFAOYSA-N 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 235000011118 potassium hydroxide Nutrition 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B9/00—Recording or reproducing using a method not covered by one of the main groups G11B3/00 - G11B7/00; Record carriers therefor
Definitions
- the electric conductivity may be increased by using a developer which will produce a more plentiful metal deposit on the photograms (physical developer).
- the reliefs may be increased by using such a developer as hydroquinone and caustic potash, hydroquinone and saccharate of lime, etc.
- Figure 1 illustrates a view of the record showing the electrodes.
- Figure 2 illustrates a cross-sectional view through the sound record on line XY.
- A designates the celluloid layer or base which, as is well known in the art, is of non-electrical conducting qualities
- B designates the gelatine or emulsion coating the exposed surface of which is corrugated as a result of the action of the developer.
- This invention relates to the utilization of such 1 superficial alterations of the emulsion to trans- 5 fer them into electric-dynamic variations adapted tocontrol a loud speaker.
- the simplest method consists in using a pair of rheophores arranged in very close relation to each other and made e. g. of iridio-platinum, or a pair of semi-conductive crystals (carborum dum, etc.) connected to an electric supply of sufficient tension (80 to 150 volts) the circuit having connected therein a relay or an amplifier adapted to control a loud speaker directly or indirectly.
- a pair of rheophores arranged in very close relation to each other and made e. g. of iridio-platinum, or a pair of semi-conductive crystals (carborum dum, etc.) connected to an electric supply of sufficient tension (80 to 150 volts) the circuit having connected therein a relay or an amplifier adapted to control a loud speaker directly or indirectly.
- a film having a base of nonelectrical-conducting material and an emulsion of material which is conducting when developed, a sound track extending longitudinally of said emulsion and having variations in electrical conductivity corresponding to fluctuations in the sound recorded thereon, and. an electric amplifying circuit interrupted at the track and having a pair of contacts opposite each other and engaging the developed emulsion of the track and adjacent opposite side edges thereof.
Landscapes
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Description
D86. 17, 1935. v R BERTHQN 2,024,563
PROCESS FOR THE REPRODUCTION (37 SOUNDS RECORDED BY MEANS OF PHOTOG-RAM-S Filed July 8, 1930 Patented Dec. 17, 1935 PATENT OFFICE PROCESS FOR THE REPRODUCTION SOUNDS RECORDED BY MEANS OF PHO- TOGRAMS Rodolphe Eerthon, Neuilly sur Seine, France, assignor, by mesne assignments, to Kislyn Corporation, New York, N. Y., a corporation of Delaware Application July 8, 1930, Serial No. 466,535 In France July 18, 1929 1 Claim.
The examination of a photographic negative shows that two main alterations have intervened in the course of the developing and the succeeding processes, viz.: the points where the silver bromide has been reduced to metallic silver noW display better conductive properties of electricity while at the same time they have undergone a kind of contraction due to a real tanning process. The development of the argentic image thus results in a twofold variation, namely, a variation in the electric conductivity and a variation in the relief.
The electric conductivity may be increased by using a developer which will produce a more plentiful metal deposit on the photograms (physical developer). The reliefs may be increased by using such a developer as hydroquinone and caustic potash, hydroquinone and saccharate of lime, etc.
Figure 1 illustrates a view of the record showing the electrodes.
Figure 2 illustrates a cross-sectional view through the sound record on line XY.
If a sound photogram be recorded lengthwise of a film by the constant-surface variable-density process, two facts will be observed. First of all, by arranging a pair of rheophores a and b in close proximity to each other so that they bear upon either side of the sound record in the manner shown in Fig. 1, it will be observed that whenever a dark line of reduced silver happens to connect the points of contact of the rheophores, and provided the electric supply to which same are connected is of sufiicient tension, a current will fiow through the rheophores which is the more intense as the line between the points of contact is darker. In addition, considering the cross sectional view of the film taken on line XY in Fig. l as shown in Fig. 2, it will be seen that the same is similar in shape to the bottom of the groove in certain gramophone records: A designates the celluloid layer or base which, as is well known in the art, is of non-electrical conducting qualities, B designates the gelatine or emulsion coating the exposed surface of which is corrugated as a result of the action of the developer.
This invention relates to the utilization of such 1 superficial alterations of the emulsion to trans- 5 fer them into electric-dynamic variations adapted tocontrol a loud speaker.
The simplest method consists in using a pair of rheophores arranged in very close relation to each other and made e. g. of iridio-platinum, or a pair of semi-conductive crystals (carborum dum, etc.) connected to an electric supply of sufficient tension (80 to 150 volts) the circuit having connected therein a relay or an amplifier adapted to control a loud speaker directly or indirectly.
If the variations in the relief are utilized instead of the variations in the conductiveness, a pick-up device followed with an amplifier will be substituted for the rheophores.
In no one of such cases does the selected arrangement take advantage of the photogram transparency, which does away with all the drawbacks incident to the use of selenium or potassium cells and the so painstaking adjustments necessary.
It is to be understood that'the invention is applicable not only to ordinary films but also to films provided with microscopic refringement elements for colour photography according to R. Berthons process.
I claim:
In combination, a film having a base of nonelectrical-conducting material and an emulsion of material which is conducting when developed, a sound track extending longitudinally of said emulsion and having variations in electrical conductivity corresponding to fluctuations in the sound recorded thereon, and. an electric amplifying circuit interrupted at the track and having a pair of contacts opposite each other and engaging the developed emulsion of the track and adjacent opposite side edges thereof.
RODOLPHE BERTHON.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2024563X | 1929-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2024563A true US2024563A (en) | 1935-12-17 |
Family
ID=9683112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US466535A Expired - Lifetime US2024563A (en) | 1929-07-18 | 1930-07-08 | Process for the reproduction of sounds recorded by means of photograms |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2024563A (en) |
-
1930
- 1930-07-08 US US466535A patent/US2024563A/en not_active Expired - Lifetime
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