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US 7,218,585 B2Granted
Information medium and information recording/reproduction apparatus
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsKiyoshi Tanii, Hiroyuki Yamaguchi, Shoichi Okabayashi
Life of this patent
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Abstract
An information medium includes a lead in area and a data area capable of recording an arbitrary information signal. The lead in area has a recordable portion where an information signal can be recorded. The recordable portion of the lead in area has an identifier I1 defining a recording speed applicable when recording an information signal in the data area. This increases accuracy defining the recording speed.
Claims12
An information medium comprising:
- a lead-in region and a data region in which an information signal can be recorded;
- wherein the lead-in region has a recordable portion that is re-recordable in which information signals can be optically recorded,
- wherein an identifier specifying a recording speed with respect to the data region is provided in the recordable portion of the lead-in region
- wherein the lead-in region further comprises a pit portion in which non-rewritable pits are formed,
- wherein an identifier specifying a recording speed with respect to the data region also is recorded in the pit portion as pits,
- wherein the identifier recorded in the pit portion specifies a plurality of different recording speeds;
- and
- wherein the identifier recorded in the recordable portion of the lead-in region specifies at least one of the plurality of different recording speeds.
5 more elements
An information medium comprising:
- a lead-in region and a data region in which an information signal can be recorded;
- wherein the lead-in region has a recordable portion that is re-recordable in which information signals can be optically recorded,
- wherein an identifier specifying a recording speed with respect to the data region is provided in the recordable portion of the lead-in region,
- wherein the lead-in region further comprises a pit portion in which non-rewritable pits are formed,
- wherein an identifier specifying a recording speed with respect to the data region also is recorded in the pit portion as pits,
- wherein the identifier recorded in the pit portion specifies a plurality of different recording speeds;
- and
- wherein the identifier recorded in the recordable portion of the lead-in region specifies a different recording speed from the plurality of different recording speeds.
5 more elements
An information medium comprising:
- a lead-in region and a data region in which an information signal can be recorded;
- wherein the lead-in region has a recordable portion that is re-recordable in which information signals can be optically recorded,
- wherein an identifier specifying a recording speed with respect to the data region is provided in the recordable portion of the lead-in region,
- wherein the lead-in region further comprises a pit portion in which non-rewritable pits are formed,
- wherein an identifier specifying a recording speed with respect to the data region also is recorded in the pit portion as pits,
- wherein the identifier recorded in the pit portion specifies a plurality of different recording speeds;
- and
- wherein the recording speed specified by the identifier of the lead-in region is equal to or less than a maximum recording speed specified by the identifier of the pit portion.
5 more elements
Dependencies are inferred from the claim text.