Device and method for recording information on a track having preformed position information

#The invention relates to a device for recording at least one information block in track in a recordable area on a record carrier, which information block comprises data words and error correction words for correcting errors within the information block, and which track has preformed position information indicative of positions for recording the information blocks, which device comprises recording means for recording marks representing the information blocks and control means for recording and retrieving position data indicative of the position of the recorded information blocks.

#The invention further relates to a method of recording at least one information block in track in a recordable area on a record carrier, which information block comprises data words and error correction words for correcting errors within the information block, and which track has preformed position information indicative of positions for recording the information blocks, which method comprises recording marks representing the information blocks and recording and retrieving position data indicative of the position of the recorded information blocks.

#The invention further relates to a record carrier comprising a track in a recordable area for recording at least one information block, which information block comprises data words and error correction words for correcting errors within the information block, and which track has preformed position information indicative of positions for recording the information blocks and preformed control information for controlling the recording process.

#These and other aspects of the invention will be apparent from and elucidated further with reference to the embodiments described by way of example in the following description and with reference to the accompanying drawings, in which

#FIG. 1a shows a record carrier (top view),

#FIG. 1b shows a record carrier (cross section),

#Corresponding elements in different FIGS. have identical reference numerals.

#FIG. 1a shows a disc-shaped record carrier 11 having a track 9 and a central hole 10. The track 9, being the position of the series of (to be) recorded marks representing information, is arranged in accordance with a spiral pattern of turns constituting substantially parallel tracks on an information layer. The record carrier may be optically readable, called an optical disc, and has an information layer of a recordable type. Examples of a recordable disc are the CD-R and CD-RW, and writable versions of DVD, such as DVD+RW. Further details about the DVD disc can be found in reference: ECMA-267: 120 mm DVD—Read-Only Disc—(1997). The information is represented on the information layer by recording optically detectable marks along the track, e.g. crystalline or amorphous marks in phase change material. The track 9 on the recordable type of record carrier is indicated by a pre-embossed track structure provided during manufacture of the blank record carrier. The track structure is constituted, for example, by a pregroove 14 which enables a read/write head to follow the track during scanning. The track structure comprises position information, e.g. addresses, for indication the location of units of information, usually called information blocks. The position information includes specific synchronizing marks for locating the start of such information blocks. The position information is encoded in frames of modulated wobbles as described below.

#FIG. 1b is a cross-section taken along the line b—b of the record carrier 11 of the recordable type, in which a transparent substrate 15 is provided with a recording layer 16 and a protective layer 17. The protective layer 17 may comprise a further substrate layer, for example as in DVD where the recording layer is at a 0.6 mm substrate and a further substrate of 0.6 mm is bonded to the back side thereof. The pregroove 14 may be implemented as an indentation or an elevation of the substrate 15 material, or as a material property deviating from its surroundings.