Write-once storage medium capable of recording data blocks on both land and groove of spiral track

An information recording method for recording information on a write-once information recording medium,

• the information recording medium comprising one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed,
• the information recording method comprising the steps of:
• recording the information on the information recording medium in a unit of each of the blocks;
• and
• controlling recording the information on the information recording medium,
• wherein in the controlling, where the information includes a user data to be recorded,
• switching is performed to determine whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded, and
• when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are uniform with respect to a recorded/unrecorded state, control is performed so as to record the information in the block to be recorded, and
• wherein the recording conditions of the recording tracks adjacent on both sides of the block to be recorded being uniform with respect to the recorded/unrecorded state includes the recording tracks adjacent on both sides of the block to be recorded being all recorded or all unrecorded.

An information recording device for recording information on a write-once information recording medium,

• the information recording medium comprising one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed,
• the information recording device comprising:
• a recorder that records the information on the information recording medium in a unit of each of the blocks;
• and
• a controller that controls recording of the recorder,
• wherein the controller controls, where the information includes a user data to be recorded, whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded, and
• when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are uniform with respect to a recorded/unrecorded state, the controller performs control so as to record the information in the block to be recorded, and
• wherein when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are different from each other, the controller performs control so as not to record the information in the block to be recorded, but so as to record the information in another block with the recording conditions of the adjacent recording tracks being uniform with respect to the recorded/unrecorded state.

An information recording device for recording information on a write-once information recording medium,

• the information recording medium comprising one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed,
• the information recording device comprising:
• a recorder that records the information on the information recording medium in a unit of each of the blocks;
• and
• a controller that controls recording of the recorder,
• wherein the controller controls, where the information includes a user data to be recorded, whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded, and
• when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are uniform with respect to a recorded/unrecorded state, the controller performs control so as to record the information in the block to be recorded, and
• wherein the recording conditions of the recording tracks adjacent on both sides of the block to be recorded being uniform with respect to the recorded/unrecorded state includes the recording tracks adjacent on both sides of the block to be recorded being all recorded or all unrecorded.

An information recording method for recording information on a write-once information recording medium,

• the information recording medium comprising one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed,
• the information recording method comprising the steps of:
• recording the information on the information recording medium in a unit of each of the blocks;
• and
• controlling recording the information on the information recording medium,
• wherein in the controlling, where the information includes a user data to be recorded,
• switching is performed to determine whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded, and
• when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are uniform with respect to a recorded/unrecorded state, control is performed so as to record the information in the block to be recorded, and
• wherein in the controlling, when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are different from each other, control is performed so as not to record the information in the block to be recorded.

An information recording device for recording information on a write-once information recording medium,

• the information recording medium comprising one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed,
• the information recording device comprising:
• a recorder that records the information on the information recording medium in a unit of each of the blocks;
• and
• a controller that controls recording of the recorder,
• wherein the controller controls, where the information includes a user data to be recorded, whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded, and
• when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are uniform with respect to a recorded/unrecorded state, the controller performs control so as to record the information in the block to be recorded, and
• wherein when the recording conditions of the recording tracks adjacent on both sides of the block to be recorded are different from each other, the controller performs control so as not to record the information in the block to be recorded.