Information recording medium, recording method, recording device, and integrated circuit
A technology for information recording and recording devices, which is applied in the field of information recording media, recording, recording devices and integrated circuits, can solve the problem that the recording film characteristics of the outermost periphery cannot be guaranteed, the recording conditions of the outer peripheral region cannot be optimally obtained, and the Recording conditions and other issues, to achieve the effect of good recording quality, accurate recording, high-speed recording and recording quality
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no. 1 Embodiment approach
[0090] The first embodiment of the present invention will be described below. First, in reference to figure 1 The track structure of the optical disc 100 of this embodiment will be described together with the following. The optical disc 100 includes a recording layer. The recording layer records data onto the optical disc 100 by forming recording marks and spaces between the recording marks and the recording marks. Disc 100 as referenced Figure 16 As explained, concentric orbits are formed.
[0091] The optical disc 100 includes a BCA (Burst Cutting Area: Burst Cutting Area) area 110 , a lead-in area 120 , a user area 130 and a lead-out area 140 .
[0092] The BCA area 110 is pre-recorded with a barcode-like signal. This signal includes a unique number for identifying the medium of each optical disc, copyright information, and disc characteristic information. The disc characteristic information includes identification information of recording layer number and address m...
no. 2 Embodiment approach
[0129] A second embodiment of the present invention will be described below. image 3 An example of a recording speed and recording power control method according to the second embodiment of the present invention, that is, a recording speed and recording power control method for recording at 6x speed in a BD is shown. The optical disc of this embodiment is suitable for recording at, for example, 4x speed (×4), 6x speed (×6) and 8x speed (×8). A method of controlling the recording speed and recording power by ×6 CAV using this optical disc is shown. image 3 , the horizontal axis of the three graphs represents the radial position [mm] in the range from the inner circumference (24 mm) to the outer circumference (58 mm) of the optical disc. In the figure, the vertical axis of the upper graph represents the recording speed, the vertical axis of the central graph represents the recording power, and the vertical axis of the lower graph represents β and modulation degree.
[0130] ...
no. 3 Embodiment approach
[0180] Next, an optical disc device that performs optimal recording power control using each recording condition at each recording speed will be described.
[0181] Figure 6 It is a block diagram showing the configuration of an embodiment of an optical disc device as a recording device of the present invention. exist Figure 6 Among them, the optical disc device has an optical head 131, a motor 132, a servo circuit 133, a track address reproducing circuit 134, a CPU 135, a data recording and reproducing circuit 136, and a laser drive circuit 137, and records information on the optical disc 100.
[0182] Disc 100 as referenced Figure 16 As explained, there are tracks for recording data, and address values are recorded in accordance with the address format on the track. The track is formed in a snaking manner, and address values are recorded according to the frequency or phase modulation of the snaking. and, with reference to figure 1 With the track structure describ...
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