Dynamic information storage or retrieval – Information location or remote operator actuated control – Selective addressing of storage medium
Reexamination Certificate
1999-01-06
2001-06-05
Huber, Paul W. (Department: 2651)
Dynamic information storage or retrieval
Information location or remote operator actuated control
Selective addressing of storage medium
C369S053410, C369S047320
Reexamination Certificate
active
06243329
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to compact disc players and, more specifically, to a method of enhanced compression rate for a multi-disc compact disc player.
2. Description of the Related Art
Recorded media is now generally available in a newer format of a digitally encoded optical disc. An audio disc is commonly referred to as a compact disc (CD). Similarly, a player of a compact disc is referred to as a CD player. The CD player reproduces an audio signal from the digital data stored on the CD, as is well understood in the art. The increasing popularity of CD players in recent years has expanded their use as an audio component on a vehicle, and in particular, a motor vehicle.
Multi-disc CD players are capable of storing a plurality of CDs for selection and playback. A disadvantage of a multi-disc CD player is an extended period of no audio play that occurs when the CD player is changing discs, which could be as great as twelve (12) seconds. Human factor studies indicate that listeners are dissatisfied with extended periods of no audio play by the CD player and would prefer that periods of no audio play be minimized. Thus, there is a need in the art for a method of enhanced compression rate for a multi-disc CD player to reduce periods of no audio play during disc changes.
SUMMARY OF THE INVENTION
Accordingly, the present invention is a method of enhanced compression rate for a multi-disc CD player. The method includes the steps of determining a last data position on a CD being played by the CD player. The method also includes the steps of determining a last playable data position and whether the last playable data position is being played. The method further includes the steps of storing data in a buffer memory at a compressed rate if the last playable data position is being played and playing the data from the buffer memory while transitioning to a next CD to be played.
One advantage of the present invention is that a method of enhanced compression rate for a multi-disc CD player is provided that modifies a data sampling rate to a compressed data sampling rate if the end of the CD is detected. Another advantage of the present invention is that the compressed data sampling rate increases the amount of data that can be stored in a buffer memory. Still another advantage of the present invention is that the enhanced buffer memory allows for the buffer memory to play while the CD player is transitioning to another disc.
Other features and advantages of the present invention will be readily appreciated, as the same becomes better understood after reading the subsequent description when considered in connection with the accompanying drawings.
REFERENCES:
patent: 3997913 (1976-12-01), Rittenbach
patent: 4053712 (1977-10-01), Reindl
patent: 4110560 (1978-08-01), Leary et al.
patent: 4603412 (1986-07-01), Yamazaki
patent: 4627090 (1986-12-01), Smith, III et al.
patent: 4805217 (1989-02-01), Morihiro et al.
patent: 4839923 (1989-06-01), Kotzin
patent: 4860272 (1989-08-01), Nishikawa et al.
patent: 4916742 (1990-04-01), Kolesmikov et al.
patent: 4944012 (1990-07-01), Morio et al.
patent: 5148417 (1992-09-01), Wong et al.
patent: 5157728 (1992-10-01), Schorman et al.
patent: 5187697 (1993-02-01), Muramatsu et al.
patent: 5357595 (1994-10-01), Sudoh et al.
patent: 5471442 (1995-11-01), Shimizume
patent: 5611018 (1997-03-01), Tanaka et al.
Dark Jay P.
Taljanovic Husein
Zeneli Ylldes
Huber Paul W.
Mollon Mark
Visteon Global Technologies Inc.
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