US4667314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compact disc player for playing a sequence of discs and selecting a sequence of stored programs in each disc to be played
Assignee: US Philips Corp
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Filing: 1985-09-23
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Granted: 1987-05-19
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Expires: 2005-09-23
Abstract
Abstract In a compact disc player with a plurality of compact disc, a random number generator selects the disc to be played and another random number generator selects the part of the disc to be played.
Inventors
- 👤 Toshiro Iwashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
G; G11; G11B; G11B7/00; G11B27/00; G11B27/10; G11B27/11; G11B17/00; G11B17/005; G11B17/22; G11B17/228; G11B19/00; G11B19/02; G11B27/002; G11B27/102; G11B27/105; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/60; G11B2220/65; H; H10; H10W; H10W74/00; H10W90/00; H10W90/701; H10W90/751; H10W90/756
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A compact disc player for playing a plurality of compact discs in a sequence comprising: a disc box for storing a plurality of compact discs; disc selection means for removing one of said discs and loading it into a playing position in response to a selection signal; a disc pick-up system for selecting one of a plurality of information pieces stored on said one compact disc and reading said selected piece; a first random selection means for generating a sequence of disc selection signals for said disc selection means; and; a second random selection means for generating a sequence of piece selection signals for said disc pick-up system, whereby said disc player plays in a random sequence each piece on a compact disc which compact disc is itself selected randomly from a plurality of compact discs.
Claim 2
Dependent Claim
136 words
A compact disc player for playing a plurality of compact discs in a sequence comprising: a disc box for storing a plurality of compact discs; disc selection means for removing one of said discs and loading it into a playing position in response to a selection signal; a disc pick-up system for selecting one of a plurality of information pieces stored on said one compact disc and reading said selected piece; a first random selection means for generating a sequence of disc selection signals for said disc selection means; and; a second random selection means for generating a sequence of piece selection signals for said disc pick-up system, whereby said disc player plays in a random sequence each piece on a compact disc which compact disc is itself selected randomly from a plurality of compact discs.
Claim 3
Dependent Claim
22 words
The compact disc player of claim 1 wherein each of said random selection means includes a memory for storing a random sequence.
Claim 4
Dependent Claim
29 words
A compact disc player according to claim 2 further comprising: keyboard entry means; and means for programming each of said memories in a sequence entered by said keyboard means.
Claim 5
Dependent Claim
32 words
The compact disc player according to claim 2 wherein each of said random selection means generates random selection numbers, and stores only those random numbers not previously generated in a respective memory.
References Cited (Backward Citations)
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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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |