Multiple layer optical disc, and device for writing such disc

A method of operating a medium access device comprising acts of:

• writing by a writer information in a logical storage space of a storage medium having two or more layers of physical storage locations, each storage location having a physical address, the physical storage space comprising a logical storage space which contains storage locations within a first layer of the layers and within a subsequent layer of the layers, the storage locations in the logical storage space having contiguously numbered logical addresses;
• the storage medium having at least one predetermined storage location for containing a value for a parameter indicating a maximum value of the logical addresses of the storage locations in the the first layer;
• reading by a processor the maximum value from the predetermined storage location;
• storing the maximum value in an address limit memory of the medium access device to change the maximum value so that a transition from the first layer to the subsequent layer corresponds to a video cell boundary;
• and
• providing an output when the maximum value cannot be changed to avoid attempting changing the maximum value.

A method of operating a data storage system comprising acts of:

• providing a writeable storage medium having a physical storage space comprising two or more layers of physical storage locations, each storage location having a physical address, the physical storage space comprising a logical storage space which contains storage locations within a first layer of the layers and within a subsequent layer of the layers, the storage locations in the logical storage space having contiguously numbered logical addresses;
• providing a medium access device configured to write information in a logical storage space of the writeable storage medium the medium access device having an address limit memory containing at least a value for a parameter indicating a maximum value of the logical addresses of the storage locations in the the first layer;
• the medium access device changing the value in the address limit memory;
• providing a host device configured to cooperate with the medium access device to determine a desired maximum value so that a transition from the first storage layer to a next storage layer corresponds to a video cell boundary;
• sending a command to the medium access device including one of the desired maximum value and a further value used for deriving the desired maximum value by the medium access device;
• and
• providing by the medium access device to the host device an indication when the maximum value cannot be changed and the in response to the indication so that the host device avoids sending the limit fix command.

A method of controlling an optical drive by a host device, the optical drive being capable of writing information in blocks of a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first storage layer (LO) of the layers and within a subsequent storage layer (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• providing data from the host device to the optical drive, the data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the first storage layer (LO);
• providing from the host device to the optical drive a limit fix command instructing the optical drive to store the indication of the parameter LAmax as determined by the host device in the address limit memory;
• changing by the optical drive the indication of the parameter LAmax in the address limit memory to the indication provided by the host device;
• sending a Disc Read Command from the host device to the optical drive;
• receiving by the host device a Disc Read Response from the optical drive indicating whether or not the parameter LAmax is changeable;
• and
• avoiding providing by the host device the limit fix command in response to the act of receiving a Disc Read Response from the optical drive indicating that the parameter LAmax cannot be changed.

A method of operating a host device for controlling an optical drive capable of writing information in a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first one (LO) of the layers and within a subsequent one (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• providing by the host device to the optical drive data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the the first storage layer (LO);
• determining by the host device whether the the indication of the parameter LAmax stored in the address limit memory of the optical drive is changeable;
• and
• sending by the host device to the optical drive a limit fix command instructing the optical drive to change the indication of the parameter LAmax as determined by the host device in the address limit memory based on a result of the determining act,
• wherein the sending act is avoided in response to receiving from the optical drive an indication that the parameter LAmax cannot be changed.

A method of operating an optical drive, the optical drive being capable of writing information in blocks of a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first storage layer (LO) of the layers and within a subsequent storage layer (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• receiving data from a host device, the data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the first storage layer (LO);
• receiving from the host device a limit fix command instructing the optical drive to store the indication of the parameter LAmax as determined by the host device in the address limit memory;
• changing by the optical drive the indication of the parameter LAmax in the address limit memory to the indication provided by the host device;
• sending a Disc Read Command by the host device to the optical drive;
• receiving by the host device a Disc Read Response from the optical drive indicating whether or not the parameter LAmax is changeable so that the host device avoids sending the limit fix command when the parameter LAmax cannot be changed.

A non-transitory computer readable medium comprising computer instructions which, when executed by a processor, configure the computer processor to perform a method of controlling an optical drive by a host device, the optical drive being capable of writing information in blocks of a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first storage layer (LO) of the layers and within a subsequent storage layer (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• causing the host device to provide data to the optical drive, the data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the first storage layer (LO);
• causing the host device to provide to the optical drive a limit fix command instructing the optical drive to store the indication of the parameter LAmax as determined by the host device in the address limit memory;
• causing the optical drive to change the indication of the parameter LAmax in the address limit memory to the indication provided by the host device;
• causing the host device to send a Disc Read Command to the optical drive;
• causing the host device to receive a Disc Read Response from the optical drive indicating whether or not the parameter LAmax is changeable;
• and
• causing the host device to avoid providing the limit fix command in response to the act of receiving a Disc Read Response from the optical drive indicating that the parameter LAmax cannot be changed.

A non-transitory computer readable medium comprising computer instructions which, when executed by a processor, configure the processor to perform a method of operating a host device for controlling an optical drive capable of writing information in a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first one (LO) of the layers and within a subsequent one (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• causing the host device to provide to the optical drive data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the the first storage layer (LO);
• causing the host device to determine whether the the indication of the parameter LAmax stored in the address limit memory of the optical drive is changeable;
• and
• causing the host device to send to the optical drive a limit fix command instructing the optical drive to change the indication of the parameter LAmax as determined by the host device in the address limit memory based on a result of the determining act,
• wherein the act of causing the host device to send is avoided in response to receiving from the optical drive an indication that the parameter LAmax cannot be changed.

A non-transitory computer readable medium comprising computer instructions which, when executed by a processor, configure the processor to perform a method of operating an optical drive, the optical drive being capable of writing information in blocks of a logical storage space (LSS) of an optical disc which has a physical storage space comprising two or more layers (LO;

• LI) of physical storage locations, each storage location having a physical address (PA), the logical storage space (LSS) comprising storage locations within a first storage layer (LO) of the layers and within a subsequent storage layer (LI) of the layers, the storage locations in the logical storage space (LSS) having contiguously numbered logical addresses (LA), the method comprising acts of:
• causing the optical drive to receive data from a host device, the data containing information to be written onto the optical disc and/or data containing instructions for the optical drive, the optical drive having an address limit memory containing at least an indication of a parameter LAmax indicating a maximum value of the logical addresses (LA) of the storage locations in the first storage layer (LO);
• causing the optical drive to receive from the host device a limit fix command instructing the optical drive to store the indication of the parameter LAmax as determined by the host device in the address limit memory;
• causing the optical drive to change the indication of the parameter LAmax in the address limit memory to the indication provided by the host device;
• causing the host device to send a Disc Read Command to the optical drive;
• causing the host device to receive a Disc Read Response from the optical drive indicating whether or not the parameter LAmax is changeable so that the host device avoids sending the limit fix command when the parameter LAmax cannot be changed.