摘要:
A DVD-R (1) has a main information area (2) where data information is recorded in a track having a wobble, and first and second control data areas (3,15) each of which is disposed in an inner space closer to the disk center than the main information area (2). The information structure and physical structure of the first control area (3) are different from those of the second control area (15). In the second control area (15), predetermined physical format information and disk production information, for example, the last address of when data is written in the DVD-R (1), the maximum transfer rate or the like, are recorded when it is detected that the optical disk is writable. Thus, when the DVD-R (1) is reproduced by a DVD player etc., the physical format information and disk production information etc. recorded in the second control data area (15) are read. Thereby, the disk can be precisely identified without spoiling the physical format information, the disk production information or the like, and further illegal use of the DVD or another optical disk leading up to breach of the copyright can be effectively prevented.
摘要:
A DVD-R (1) has a main information area (2) where data information is recorded in a track having a wobble, and first and second control data areas (3,15) each of which is disposed in an inner space closer to the disk center than the main information area (2). The information structure and physical structure of the first control area (3) are different from those of the second control area (15), wherein the second control area is provided with a wobble while not the first control area. In the second control area (15), predetermined physical format information and disk production information, for example, the last address of when data is written in the DVD-R (1), the maximum transfer rate or the like, are recorded. Thus, when the DVD-R (1) is reproduced by a DVD player etc., the physical format information and disk production information etc. recorded in the second control data area (15) are read. Thereby, the disk can be precisely identified without spoiling the physical format information, the disk production information or the like, and further illegal use of the DVD or another optical disk leading up to breach of the copyright can be effectively prevented.
摘要:
A DVD-R (1) has a main information area (2) where data information is recorded in a track having a wobble, and first and second control data areas (3,15) each of which is disposed in an inner space closer to the disk center than the main information area (2). The information structure and physical structure of the first control area (3) are different from those of the second control area (15), wherein the second control data area is provided with inter-groove pits and the first control data area has no pits formed between grooves. In the second control area (15), predetermined physical format information and disk production information, for example, the last address of when data is written in the DVD-R (1), the maximum transfer rate or the like, are recorded. Thus, when the DVD-R (1) is reproduced by a DVD player etc., the physical format information and disk production information etc. recorded in the second control data area (15) are read. Thereby, the disk can be precisely identified without spoiling the physical format information, the disk production information or the like, and further illegal use of the DVD or another optical disk leading up to breach of the copyright can be effectively prevented.
摘要:
A DVD-R (1) has a main information area (2) where data information is recorded in a track having a wobble, and first and second control data areas (3,15) each of which is disposed in an inner space closer to the disk center than the main information area (2). The information structure or physical structure of the first control area (3) are different from those of the second control area (15). In the second control area (15), predetermined physical format information and disk production information, for example, the last address of when data is written in the DVD-R (1), the maximum transfer rate or the like, are recorded. Thus, when the DVD-R (1) is reproduced by a DVD player etc., the physical format information and disk production information etc. recorded in the second control data area (15) are read. Thereby, the disk can be precisely identified without spoiling the physical format information, the disk production information or the like, and further illegal use of the DVD or another optical disk leading up to breach of the copyright can be effectively prevented.
摘要:
A DVD-R (1) has a main information area (2) where data information is recorded in a track having a wobble, and first and second control data areas (3,15) each of which is disposed in an inner space closer to the disk center than the main information area (2). The information structure and physical structure of the first control area (3) are different from those of the second control area (15). In the second control area (15), predetermined physical format information and disk production information, for example, the last address of when data is written in the DVD-R (1), the maximum transfer rate or the like, are recorded. Thus, when the DVD-R (1) is reproduced by a DVD player etc., the physical format information and disk production information etc. recorded in the second control data area (15) are read. Thereby, the disk can be precisely identified without spoiling the physical format information, the disk production information or the like, and further illegal use of the DVD or another optical disk leading up to breach of the copyright can be effectively prevented.
摘要:
A method for manufacturing a multiturn coil or a film magnetic head including a multiturn coil. This multiturn coil manufacturing method includes the following steps. First a laminate (15, 45) made up of conducting layers (14a-14d, 47a-47d) for coil and insulating layers (13a-13d, 46a-46d) for coil is formed on a substrate (10) and a base layer (11) formed on it at a given inclination (ϑ). Then, this laminate (15, 45) is made U-shaped by photolithography. In the next step the topside of the laminate (15, 45) in both discontinued end sections is flattened for the end faces of all conducting layers are revealed at once. Finally, filmy conductive strips (19a-19c, 61a-61c) are formed in these revealed portions to complete a multiturn coil.
摘要:
A method for manufacturing a multiturn coil or a film magnetic head including a multiturn coil. This multiturn coil manufacturing method includes the following steps. First a laminate (15, 45) made up of conducting layers (14a-14d, 47a-47d) for coil and insulating layers (13a-13d, 46a-46d) for coil is formed on a substrate (10) and a base layer (11) formed on it at a given inclination (ϑ). Then, this laminate (15, 45) is made U-shaped by photolithography. In the next step the topside of the laminate (15, 45) in both discontinued end sections is flattened for the end faces of all conducting layers are revealed at once. Finally, filmy conductive strips (19a-19c, 61a-61c) are formed in these revealed portions to complete a multiturn coil.