US5331423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disc player with an automatic initialization function
Assignee: Sony Corp
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Filing: 1992-09-24
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Granted: 1994-07-19
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Expires: 2012-09-24
Abstract
Abstract A disc player reproduces information recorded on a disc which has a disc type. Type identification circuitry determines the disc type of the disc. Reproduction circuitry reproduces the information stored on the disc. Disc ejection circuitry generates a disc ejecting signal when an externally-generated command is received. Control circuitry stops the reproduction circuitry in response to the disc ejecting signal. Reset circuitry initializes the disc reproduction circuitry when the disc ejecting signal is asserted and the type identification circuitry determines that the disc type is a first predetermined type, and inhibits the initialization of the disc reproduction circuitry when the disc ejecting signal is asserted and the type identification circuitry determines that the disc type is a second predetermined type. The disc type determined by the type identification circuitry can be stored in a memory. Set-up disc mode circuitry causes a set-up disc type to be stored in the memory regardless of the disc type of the disc. Reset mode circuitry causes the disc reproducing circuitry to begin reproduction without initializing the disc reproducing circuitry. A switch provides a method for selecting between the type identification circuitry. The set-up mode circuitry, and the reset mode circuitry.
Inventors
- 👤 Kiyoshi Ota
- 👤 Kousuke Misono
- 👤 Toshiyuki Ishii
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:32
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/02; G11B19/16; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/255; G11B27/00; G11B27/10; G11B27/102; G11B27/105
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
134 words
A disc player for reproducing information recorded on a disc, the disc having a disc type, the disc player comprising: type identification means for determining the disc type of said disc; disc reproduction means for reproducing the information recorded on said disc; disc ejecting means for generating a disc ejecting signal in response to an externally-generated command; control means for stopping the disc reproducing means when the disc ejecting signal is asserted; and reset means for initializing the disc reproduction means when the disc ejecting signal is asserted and the disc type determined by the type identification means is a first predetermined type, and for inhibiting initialization of the disc reproducing means when the disc ejecting signal is asserted and the disc type determined by the type identification means is a second predetermined type.
Claim 2
Dependent Claim
134 words
A disc player for reproducing information recorded on a disc, the disc having a disc type, the disc player comprising: type identification means for determining the disc type of said disc; disc reproduction means for reproducing the information recorded on said disc; disc ejecting means for generating a disc ejecting signal in response to an externally-generated command; control means for stopping the disc reproducing means when the disc ejecting signal is asserted; and reset means for initializing the disc reproduction means when the disc ejecting signal is asserted and the disc type determined by the type identification means is a first predetermined type, and for inhibiting initialization of the disc reproducing means when the disc ejecting signal is asserted and the disc type determined by the type identification means is a second predetermined type.
Claim 3
Dependent Claim
19 words
The disc player according to claim 1, wherein the second predetermined type of disc includes a set-up type disc.
Claim 4
Dependent Claim
50 words
The disc player according to claim 2, wherein said disc includes disc type information indicating the disc type of said disc in a lead in area, and wherein the type identification means determines the disc type by reproducing the disc type information from the lead in area of said disc.
Claim 5
Dependent Claim
60 words
The disc player according to claim 2, and further comprising: memory means for storing the disc type determined by the type identification means; set-up disc mode means for recording a set-up disc type in the memory means regardless of the disc type of said disc; and switch means for selecting between the type identification means and the set-up mode means.
Claim 6
Dependent Claim
49 words
The disc player according to claim 4, wherein: the disc player further comprises reset mode means for starting the disc reproducing means without initializing the disc reproducing means, and the switch means is for selecting between the type identification means, the set-up mode means, and the reset mode means.
Claim 7
Dependent Claim
19 words
The disc player according to claim 2 wherein the first predetermined type of disc includes an application type disc.
Claim 8
Independent Claim
116 words
A method for reproducing information recorded on a disc, the disc having a disc type, the method comprising the steps of: providing said disc in a disc player; determining the disc type of said disc; reproducing the information recorded on said disc; generating a disc ejecting signal in response to an externally-generated command; stopping the reproduction of the information recorded on said disc in response to the disc ejecting signal; initializing the disc player when the disc ejecting signal is asserted and the predetermined disc type is a first predetermined type; and inhibiting the initialization of the disc player when the disc ejecting signal is asserted and the determined disc type is a second predetermined type.
Claim 9
Independent Claim
116 words
A method for reproducing information recorded on a disc, the disc having a disc type, the method comprising the steps of: providing said disc in a disc player; determining the disc type of said disc; reproducing the information recorded on said disc; generating a disc ejecting signal in response to an externally-generated command; stopping the reproduction of the information recorded on said disc in response to the disc ejecting signal; initializing the disc player when the disc ejecting signal is asserted and the predetermined disc type is a first predetermined type; and inhibiting the initialization of the disc player when the disc ejecting signal is asserted and the determined disc type is a second predetermined type.
Claim 10
Dependent Claim
17 words
The method of claim 7 wherein the first predetermined type of disc includes an application type disc.
Claim 11
Dependent Claim
17 words
The method of claim 7 wherein the second predetermined type of disc includes a set-up type disc.
Claim 12
Dependent Claim
45 words
The method of claim 7 wherein said disc includes disc type information indicating the disc type of said disc in a lead in area, and wherein the disc type is determined by reproducing the disc type information from the lead in area of said disc.
Claim 13
Dependent Claim
109 words
The method of claim 7 and further comprising the steps of: mode selecting either a determined type mode or a predetermined type mode; storing the determined disc type in a memory when the determined type mode is selected; and storing a predetermined type in the memory regardless of the determined disc type when the predetermined type mode is selected; initializing the disc player when the disc ejecting signal is asserted and the disc type stored in memory is the first predetermined type; and inhibiting the initialization of the disc player when the disc ejecting signal is asserted and the disc type stored in memory is the second predetermined type.
Claim 14
Dependent Claim
41 words
The method of claim 11 and further comprising the steps of: mode selecting either a determined type mode, a predetermined type mode, or a reset mode; and starting the reproduction of the disc without initialization when the reset mode is selected.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-07-18 | 1998-01-17 | 1998-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-07-18 | 2002-01-17 | 2002-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-07-18 | 2006-01-17 | 2006-07-19 | $7700.00 | Window Closed / Lapsed |