US3839601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical record sheet and device for reproducing sound therefrom
Assignee: Gakken Holdings Co Ltd
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Filing: 1972-06-30
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Granted: 1974-10-01
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Expires: 1992-06-30
Abstract
Abstract An optical sound track is formed in multiturn spiral arrangement on one surface of an opaque sheet-like medium. On the opposite surface some information relating to the sound intelligence recorded on the other surface may be visually represented. For reproduction, the record sheet is placed on an optical sound reproducer with its sound track in face-to-face registered relationship with a turntable on the top surface of the reproducer. A photoelectric reproducing head positioned below a radial slot of the turntable is made to follow the spiral path of the sound track by the resultant of its own linear motion along the slot and the rotation of the turntable relative to the record sheet.
Inventors
- 👤 Y Kimura
- 👤 T Tsuchihashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:25
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/002; G11B7/0033; G09; G09B; G09B5/00; G09B5/06; G09B5/067; G11B7/0025; G11B7/0037; G11B7/08; G11B7/085; G11B7/0857; G11B7/08582
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
148 words
An optical record unit comprising, in combination: a sheet like medium; an optical sound track formed on one surface of said sheet-like medium, the sound track being adapted to be in face-to-face relationship with a radially slotted turntable for reproducing the sound associated with the sound track; a second surface of the sheet-like medium adapted to visually display sound track-related information thereon, a unitary photoelectric reproducing head mounted below the turntable and rotatable therewith, said head scanning said sheet-like medium through said slot; said head comprising a hollow cylindrical housing, a light source adjacent one end of said housing, a lens system within the housing for converging the light radiated by the light source, and a photoelectric element disposed adjacent the other end of the housing, and means for audibly reproducing the sound formed on said sheetlike medium, said means being in electrical communication with said photoelectric element.
Claim 2
Dependent Claim
148 words
An optical record unit comprising, in combination: a sheet like medium; an optical sound track formed on one surface of said sheet-like medium, the sound track being adapted to be in face-to-face relationship with a radially slotted turntable for reproducing the sound associated with the sound track; a second surface of the sheet-like medium adapted to visually display sound track-related information thereon, a unitary photoelectric reproducing head mounted below the turntable and rotatable therewith, said head scanning said sheet-like medium through said slot; said head comprising a hollow cylindrical housing, a light source adjacent one end of said housing, a lens system within the housing for converging the light radiated by the light source, and a photoelectric element disposed adjacent the other end of the housing, and means for audibly reproducing the sound formed on said sheetlike medium, said means being in electrical communication with said photoelectric element.
Claim 3
Dependent Claim
24 words
An optical recording unit according to claim 1, wherein, the second surface of said sheet-like medium has a plurality of blanks for writing upon.
Claim 4
Dependent Claim
28 words
An optical record unit according to claim 1, wherein said optical sound track is formed in multiturn spiral arrangement, and the sheet-like medium is an opaque sheet-like medium.
Claim 5
Dependent Claim
39 words
An optical record unit according to claim 1, wherein said optical track is formed in multiturn spiral arrangement, the sheet-like medium is an opaque sheet-like medium, and the second surface thereof has a plurality of blanks for writing upon.
Claim 6
Independent Claim
244 words
A device for reproducing sound intelligence stored in an optical sound track formed in multiturn spiral arrangement on one surface of a sheet-like record medium, comprising, in combination: a casing; a turntable on the top surface of said casing on which said sheet-like record medium is to be placed with its optical sound track in register with said turntable; said turntable having a slot extending radially therethrough; means for rotating said turntable relative to said sheet-like medium; a photoelectric reproducing head mounted below said turntable for scanning said optical sound track through said slot; said photoelectric reproducing head being rotatable with said turntable; and feed means for linearly moving said photoelectric reproducing head along said slot in relation with the rotation of each turntable, said feed means comprising a carriage supporting said photoelectric reproducing head and slidably mounted on a pair of guide rods secured to the lower surface of said turntable and extending along said slot, a spirally grooved feed rod rotatably mounted on the lower surface of said turntable and extending parallel to said guide rods, transmission means for impartIng the rotation of said turntable to said feed rod, and means for converting the rotation of said feed rod into linear motion of said carriage along said guide rods, whereby said photoelectric reproducing head is made capable of following the spiral path of said optical sound track due to the resultant of its own linear motion and the rotation of said turntable.
Claim 7
Independent Claim
244 words
A device for reproducing sound intelligence stored in an optical sound track formed in multiturn spiral arrangement on one surface of a sheet-like record medium, comprising, in combination: a casing; a turntable on the top surface of said casing on which said sheet-like record medium is to be placed with its optical sound track in register with said turntable; said turntable having a slot extending radially therethrough; means for rotating said turntable relative to said sheet-like medium; a photoelectric reproducing head mounted below said turntable for scanning said optical sound track through said slot; said photoelectric reproducing head being rotatable with said turntable; and feed means for linearly moving said photoelectric reproducing head along said slot in relation with the rotation of each turntable, said feed means comprising a carriage supporting said photoelectric reproducing head and slidably mounted on a pair of guide rods secured to the lower surface of said turntable and extending along said slot, a spirally grooved feed rod rotatably mounted on the lower surface of said turntable and extending parallel to said guide rods, transmission means for impartIng the rotation of said turntable to said feed rod, and means for converting the rotation of said feed rod into linear motion of said carriage along said guide rods, whereby said photoelectric reproducing head is made capable of following the spiral path of said optical sound track due to the resultant of its own linear motion and the rotation of said turntable.
Claim 8
Dependent Claim
49 words
A device according to claim 5, in which said transmission means comprises a first helical gear fixedly mounted below said turntable on the same axis therewith, and a second helical gear fixedly mounted on said feed rod, said first and said second helical gear being intermeshed with each other.
Claim 9
Dependent Claim
59 words
A device according to claim 5, in which said means for converting the rotation of said feed rod into linear motion of said carriage comprises a turntable arm extending from said carriage and resiliently urged toward said feed rod, and a member provided to said arm to be slidably received in the spiral groove formed on said feed rod.
Claim 10
Dependent Claim
40 words
A device according to claim 7, further comprising automatic return means for automatically returning said photoelectric reproducing head from its terminal position at the inner end of said slot to the starting position at the outer end of said slot.
Claim 11
Dependent Claim
86 words
A device according to claim 8, in which said automatic return means comprises cam means for disengaging said carriage from said feed rod by turning said arm when said carriage reaches the inner end of said slot, a return rod extending parallel to said feed rod for moving said carriage back to the outer end of said slot while the same is disengaged from said feed rod, and means for linearly moving said return rod back and forth in relation with the rotation of said turntable.
Claim 12
Dependent Claim
43 words
A device according to claim 9, in which the leading end of said return rod is bifurcated to engage a return plate affixed to said arm when said arm is turned by said cam means for disengaging said carriage from said feed rod.
Claim 13
Dependent Claim
84 words
A device according to claim 9, in which said means for linearly moving said return rod comprises a first sprocket wheel fixedly mounted below said turntable on the same axis therewith, a second sprocket wheel rotatably mounted on the lower surface of said turntable and linked with said first sprocket wheel by a chain, a crankpin revolvable with said second sprocket wheel, a lever operatively associated with said crankpin, and an oscillatable member for transmitting the motion of said lever to said return rod.
Claim 14
Dependent Claim
26 words
A device according to claim 5, further comprising sheet-retaining means for immovably holding said sheet-like record medium in position on the top surface of said casing.
Claim 15
Dependent Claim
36 words
A device according to claim 12, in which said sheet-retaining means comprises a plurality of pins projecting upwardly from the top surface of said casing to be inserted into holes formed correspondingly through said sheet-like medium.
Claim 16
Dependent Claim
39 words
A device according to claim 5, further comprising a flat cover hingedly connected to one edge of the top surface of said casing to be turned down onto the sheet-like record medium placed in position on said top surface.
Claim 17
Dependent Claim
12 words
A device according to claim 14, in which said cover is transparent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |