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Optical disk system and method for storing disk- and user-specific settings
| Details |
Inventors: Schoner, Brian F.; Neuman, Darren D.; Grandbois, Brett J.; Cubiss, Christopher;
Assignee: LSI Logic Corporation (Milpitas, CA)
Primary Examiner: Chevalier; Robert
Assistant Examiner:
Attorney, Agent or Firm: Conley, Rose & Tayon
An optical disk system is presented which stores disk- and user-specific settings, along with an associated method. The optical disk system includes a disk drive unit for retrieving identification data and encoded video data stored upon an optical disk, an input device for inputting user settings, and a microprocessor memory unit having a non-volatile portion for storing the identification data and the user settings. Information specific to optical disks (e.g., DVDs) and users is stored within the non-volatile portion of the microprocessor memory unit. The user settings may include, for example, spoken language, video display format, audio volume setting, and subtitle language. The user settings may be retrieved and invoked, conveniently allowing a user to view a presentation (e.g., a movie), or to continue viewing an interrupted presentation, without having to reselect viewing and listening preferences. The identification data may include a portion of a title of the optical disk. A value corresponding to the identification data (e.g., a checksum) may be stored in order to minimize storage requirements. The non-volatile portion of the microprocessor memory unit may include, for example, flash memory or electrically erasable programmable random access memory (EEPROM) which maintains stored contents even in the absence of applied electrical power. A sleep timer function may be activated which requires periodic user input to continue playback and to save a current playback location. |
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DETAILED DESCRIPTION The problems outlined above are in large part solved by an optical disk system and method for storing disk- and user-specific settings.
One embodiment of the optical disk system includes a disk drive unit for retrieving identification data and encoded video data stored upon an optical disk, an input device for inputting user settings, and a microprocessor memory unit operably coupled to the disk drive unit and the input device and including a non-volatile portion for storing the identification data and the user settings.
Information specific to optical disks (e.
g.
, DVDs) and users is stored within the non-volatile portion of the microprocessor memory unit.
Such information may be retrieved and invoked, conveniently allowing a user to view a presentation, or to continue viewing an interrupted presentation, without having to reselect viewing and listening preferences.
The identification data may include a portion of a title of the optical disk.
A value corresponding to the identification data may be stored within the non-volatile portion of the microprocessor memory unit in order to minimize storage requirements.
The value may be, for example, an error detection code (e.
g.
, checksum) computed from the identification data stored upon the optical disk.
The non-volatile portion of the microprocessor memory unit may include, for example, flash memory or electrically erasable programmable random access memory (EEPROM) which maintains stored contents even in the absence of applied electrical power.
The input device may include a keypad having multiple electrical pushbutton switches or "keys".
The input device may be a "remote" control unit in wireless communication with the microprocessor (e.
g.
, via an infrared light beam).
A user may input user settings by pressing one or more of the keys of the keypad.
The user settings may include, for example, spoken language, video display format, audio volume setting, and subtitle language.
The optical disk system may also include a microprocessor and an audio/video decoder
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