Patent US4476556A successfully refreshed from Google Patents.
US4476556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for reproducing information from a record disc
Assignee: Hitachi Ltd
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Filing: 1982-09-30
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Granted: 1984-10-09
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Expires: 2002-09-30
Abstract
Abstract An apparatus for reproducing information from a record disc having a poor heat-resistant capability, in which a turntable for carrying the record disc is caused to rotate by a motor coupled thereto while the apparatus is made ready for a reproducing operation except when the record disc is being moved for loading and unloading of the turntable.
Inventors
- 👤 Hayashi Nagami
- 👤 Yoshisada Taniguchi
- 👤 Shinpei Otsu
- 👤 Toshio Fujimura
- 👤 Keizo Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:11
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/14; G11B33/1406; G11B33/1413; G11B33/142; G11B17/00; G11B19/00; G11B19/02; G11B19/10; G11B19/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
An apparatus for reproducing information from a record disc having a poor heat-resistant capability, comprising: turntable means for carrying said record disc for reproduction of information; motor means for rotating said turntable means; means for loading said turntable means with said record disc and for unloading said turntable means to detach said record disc from said turntable means; and means coupled to said loading and unloading means for causing said motor means to operate to rotate said turntable means while said turntable means does not carry said record disc except when said loading and unloading means is loading said record disc onto said turntable means and detaching said record disc therefrom, whereby the rotation of said turntable means causes air within said reproducing apparatus to be circulated for suppressing a possible temperature rise of the atmosphere around said record disc while said reproducing apparatus is made ready for a reproducing operation.
Claim 2
Independent Claim
151 words
An apparatus for reproducing information from a record disc having a poor heat-resistant capability, comprising: turntable means for carrying said record disc for reproduction of information; motor means for rotating said turntable means; means for loading said turntable means with said record disc and for unloading said turntable means to detach said record disc from said turntable means; and means coupled to said loading and unloading means for causing said motor means to operate to rotate said turntable means while said turntable means does not carry said record disc except when said loading and unloading means is loading said record disc onto said turntable means and detaching said record disc therefrom, whereby the rotation of said turntable means causes air within said reproducing apparatus to be circulated for suppressing a possible temperature rise of the atmosphere around said record disc while said reproducing apparatus is made ready for a reproducing operation.
Claim 3
Dependent Claim
26 words
An apparatus according to claim 1, in which said turntable means is provided with fins for setting up a current of air in said reproducing apparatus.
Claim 4
Dependent Claim
31 words
An apparatus according to claim 1, in which a microcomputer is provided to at least constitute said loading and unloading means and said means for causing said motor means to operate.
Claim 5
Dependent Claim
81 words
An apparatus according to claim 1, further comprising power means for supplying power to said apparatus for enabling operation of at least said motor means and said loading and unloading means, said means for causing said motor means to operate being responsive to said power means supplying power to said apparatus for causing said motor means to continuously rotate said turntable means when said turntable means does not carry said record disc except during operation of said loading and unloading means.
Claim 6
Dependent Claim
150 words
A disc player comprising: turntable means on which a record disc is to be placed for reproduction of information from said record disc, said record disc having a poor heat-resistant capability; motor means for rotating said turntable means; sensor means for detecting the position of said record disc while said disc player is made ready for a reproduction operation; and means responsive to the output of said sensor means for controlling the operation of said motor means so that said turntable means is driven to rotate while said turntable means does not carry said record disc except when said record disc is being moved to or from said turntable means, whereby the rotation of said turntable means causes air within said disc player to be circulated for suppressing a possible temperature rise of the atmosphere around said record disc while said disc player is made ready for a reproducing operation.
Claim 7
Dependent Claim
150 words
A disc player comprising: turntable means on which a record disc is to be placed for reproduction of information from said record disc, said record disc having a poor heat-resistant capability; motor means for rotating said turntable means; sensor means for detecting the position of said record disc while said disc player is made ready for a reproduction operation; and means responsive to the output of said sensor means for controlling the operation of said motor means so that said turntable means is driven to rotate while said turntable means does not carry said record disc except when said record disc is being moved to or from said turntable means, whereby the rotation of said turntable means causes air within said disc player to be circulated for suppressing a possible temperature rise of the atmosphere around said record disc while said disc player is made ready for a reproducing operation.
Claim 8
Dependent Claim
27 words
A disc player according to claim 5, in which said turntable means is provided with fins for setting up a current of air in said disc player.
Claim 9
Independent Claim
66 words
An apparatus for reproducing signals recorded on a disc having a poor heat-resistant capability, comprising: turntable means for carrying said disc, motor means for driving said turntable means, and means for setting said motor means in operation to rotate said turntable means while said turntable means does not carry said disc except when said disc is being moved for loading and unloading of said turntable means.
Claim 10
Independent Claim
66 words
An apparatus for reproducing signals recorded on a disc having a poor heat-resistant capability, comprising: turntable means for carrying said disc, motor means for driving said turntable means, and means for setting said motor means in operation to rotate said turntable means while said turntable means does not carry said disc except when said disc is being moved for loading and unloading of said turntable means.
Claim 11
Dependent Claim
44 words
An apparatus according to claim 7, wherein said turntable means due to rotation thereof causes air within said apparatus to circulate for suppressing a possible temperature rise of the atmosphere around said disc while said reproducing apparatus is made ready for a reproducing operation.
Claim 12
Dependent Claim
25 words
An apparatus according to claim 8, wherein said turntable means is provided with fins for setting up a current of air in said reproducing apparatus.
Claim 13
Dependent Claim
19 words
An apparatus according to claim 8, wherein said means for setting said motor means in operation includes a microcomputer.
Claim 14
Dependent Claim
58 words
An apparatus according to claim 8, wherein said means for setting said motor means in operation to rotate said turntable means operates said motor means continuously when said turntable means does not carry said disc except during the loading and unloading of said turntable means and when said turntable means carries said disc for effecting a reproducing operation.
References Cited (Backward Citations)
US4002826A
Cited
US4305146A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |