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  Optical information storage medium and method of and apparatus for recording data thereonUSPTO Application #: 20060050619Title: Optical information storage medium and method of and apparatus for recording data thereon Abstract: An optical information storage medium and a method of recording thereon. The optical information storage medium has a lead-in area, a user data area and a lead-out area, and data indicating a maximum and/or a minimum writing speed, maximum and minimum writing speeds, or compatible writing speeds is recorded in a recordable region of at least one of the lead-in area and the lead-out area. The optical information storage medium and the method of recording on the media enable a disc drive to reliably record data on a disc which cannot achieve a prescribed recording speed due to manufacturing conditions, at an optimal speed considering the pre-recorded writing speed data. (end of abstract) Agent: Stein, Mcewen & Bui, LLP - Washington, DC, US Inventors: Kyung-geun Lee, Jung-wan Ko, In-sik Park USPTO Applicaton #: 20060050619 - Class: 369047390 (USPTO) Related Patent Categories: Dynamic Information Storage Or Retrieval, Control Of Storage Or Retrieval Operation By A Control Signal To Be Recorded Or Reproduced, Mechanism Control By The Control Signal, Control Of Relative Motion Producing Mechanism, During Initialization Or Start-up The Patent Description & Claims data below is from USPTO Patent Application 20060050619. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application is a continuation of U.S. patent application Ser. No. 10/418,300, filed Apr. 18, 2003, currently pending, which claims the priority of Korean Patent Application No. 2002-22460, filed on Apr. 24, 2002, Korean Patent Application No. 2002-24830, filed on May 6, 2002, and Korean Patent Application No. 2002-25679, filed on May 9, 2002 in the Korean Intellectual Property Office, the disclosures of which are incorporated herein in their entirety by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to an optical information storage medium and a method of recording data thereon, and more particularly, to an optical information storage medium in which data indicating a maximum writing speed, maximum and/or minimum writing speeds, or compatible writing speeds is recorded in a recordable region other than a user data area so that a disc drive can recognize the data and record information on the optical information medium at an optimal speed, and a method of recording the data on the medium. [0004] 2. Description of the Related Art [0005] An optical information storage medium, e.g., an optical disc, is generally employed as an information storage medium of an optical pick-up device that records and reproduces information on and from the optical disc without contacting the optical disc. Optical discs include compact discs (CDs) and digital versatile discs (DVDs), which have different storage capacities. In addition, various sub-categories of the optical discs include CD-Recordables (CD-Rs), CD-Rewritables (CD-RWs), Digital Versatile Disc-rewritables (DVD-RWs), Digital Versatile Disc-Random Access Memories (DVD-RAMs), and Digital Versatile Disc Rewritables (DVD+RWs). [0006] As a recording speed of the optical discs increases, performance of disc drives has been improved to record data on the optical disc at the increased recording speed. In order to perform reliable recording, the disc drives operate such that they can satisfy recording characteristics accompanying the recording speed of the optical disc. However, while general disc drives reliably record data on low-speed discs, they do not satisfy the recording characteristics of high-speed discs, and thus they frequently cause damage to user data. Likewise, the disc drives for the high-speed discs can cause the damage to the user data when recording the information on the low-speed discs. [0007] Accordingly, information on the recording speed of the optical disc is necessary for reliably recording data. The information is recorded in a predetermined region of the optical disc, and the disc drive recognizes the prescribed recording speed of the optical disc and records data on the optical disc at an optimal speed. For example, in a case of a 2.times.-speed disc, the information on the recording speed of the 2.times.-speed disc is recorded on a predetermined region of the 2.times.-speed disc when the 2.times.-speed disc is manufactured, and thus a disc drive can refer to the prescribed recording speed and the accompanying recording characteristics and thus can record the data on the 2.times.-speed disc at a speed of 2.times.. [0008] However, the prescribed recording speed of a disc is not sometimes satisfied in a disc test. For example, a 4.times.-speed disc is manufactured, and the information on the recording speed of the 4.times.-speed disc, i.e., 4.times., is recorded on a predetermined region of the 4.times.-speed disc, but due to various factors during manufacturing the 4.times.-speed disc, the recording speed of the 4.times.-speed disc does not reach the prescribed 4.times. speed. Such a disc cannot be used as the 4.times.-speed disc, but it may be appropriate to be used at an actual recording speed, such as a 3.times.-speed disc or a 2.times.-speed disc. If the above-described disc is used, the disc drive recognizes the disc as the 4.times.-speed disc because the recording speed is recorded as the 4.times. speed, and thus the disc drive records the data on the 4.times.-speed disc at the prescribed 4.times. speed. However, the actual recording speed is not 4.times., and thus the recorded data can be damaged. Therefore, such discs which are manufactured to be 4.times.-speed discs but turn out to be 3.times.-speed discs or 2.times.-speed discs, cannot be used and are discarded. [0009] It is very wasteful to discard the discs which fail to achieve a desired recording speed due to various manufacturing conditions but achieve a lower recording speed. SUMMARY OF THE INVENTION [0010] The present invention provides an optical information storage medium which is capable of reliably recording user data at an optimal speed according to information indicating the medium's maximum writing speed, maximum and minimum writing speeds, or compatible writing speeds stored in a recordable region other than a user data area, and a method of recording on the medium. [0011] Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention. [0012] According to one aspect of the present invention, an optical information storage medium includes a lead-in area, a user data area, and a lead-out area, wherein a maximum writing speed is recorded in a recordable region of at least one of the lead-in area and the lead-out area. [0013] The maximum writing speed is recorded in recordable regions of both the lead-in area and the lead-out area. [0014] The recordable region includes a disc ID zone in which disc ID information is recorded and which has at least one disc ID information region and a reserved region, and the maximum writing speed is recorded in at least one disc ID information region or the reserved region. [0015] A minimum writing speed is further recorded in the recordable region of at least one of the lead-in area and the lead-out area. [0016] According to another aspect of the present invention, an optical information storage medium includes a lead-in area, a user data area and a lead-out area, wherein information indicating compatible writing speeds is recorded in a recordable region of at least one of the lead-in area and the lead-out area. [0017] Information on each of the compatible writing speeds is recorded by a corresponding bit of a predetermined byte of the recordable region. [0018] According to yet another aspect of the present invention, a method of recording on an optical information storage medium having a lead-in area, a user data area, and a lead-out area includes recording a maximum writing speed in a recordable region of at least one of the lead-in area and the lead-out area; and recording data on the optical information storage medium at an optimal speed determined based on the maximum wiring speed. [0019] According to yet another aspect of the present invention, a method of recording on an optical information storage medium having a lead-in area, a user data area and a lead-out area includes recording information indicating compatible writing speeds in a recordable region of at least one of the lead-in area and the lead-out area; and recording data on the optical information storage medium at an optimal speed determined based on the maximum writing speed. [0020] According to another aspect to the present invention, a method of recording data on an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus includes reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area, and recording the data on the optical information storage medium at the writing speed of the information. [0021] According to another aspect to the present invention, a method of reading data from an optical information storage medium having a lead-in area, a user data area, and a lead-out area in a reproducing apparatus includes reading information representing a writing speed from a recordable region of at least one of the lead-in area and the lead-out area, and rotating the optical information storage medium at the writing speed according to the read information. Continue reading... Full patent description for Optical information storage medium and method of and apparatus for recording data thereon Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Optical information storage medium and method of and apparatus for recording data thereon patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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