Patents by Inventor Jong-tae An
Jong-tae An has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8295148Abstract: A dual format hybrid storage medium includes a non-recordable section in which data to be reproduced is written and in which data cannot be updated, and a recordable section in which data in the non-recordable section having a high probability of error occurrence may be backed up. The high probability of error is determined based on a range of fluctuation of an RF envelope, an unstable phase locked loop signal, a value of a sum level or sub-beam added level of the reproduced data, an unstable focus lock signal, a range of fluctuation of a track error signal and a range of fluctuation of a focus error signal. A determination is made to test for errors if a freeze-frame is found, audio and video are out of sync, a data seek fails or a picture distortion or a picture mosaic effect occurs.Type: GrantFiled: May 18, 2004Date of Patent: October 23, 2012Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-tae An
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Patent number: 7924667Abstract: A recording and/or reproducing apparatus, medium, and method controlling a write speed of a disk drive. The method may includes measuring a predetermined disk quality evaluating factor affecting a servo control performance in multiple areas of a disk, determining an optimal write speed of the areas of the disk corresponding to the disk quality evaluating factor, and controlling a rotation speed of the disk at an optimal write speed of a corresponding area of the disk, depending on a position of the disk in which writing is to be performed, in a writing mode.Type: GrantFiled: February 28, 2006Date of Patent: April 12, 2011Assignee: Toshiba Samsung Storage Technology Korea CorporationInventors: Kun-ho Yun, Jong-tae An
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Patent number: 7227823Abstract: An apparatus and method determining an optimum recording power suitable for a disc loaded in a disc drive. The apparatus includes a pickup unit and a control unit. The pickup unit records data in a predetermined area on the disc and reproduces the recorded data from the disc. The control unit controls the disc drive to record data in the predetermined area of the disc using a preset reference recording power. The control unit detects a plurality of recording powers using reproduction signals of the predetermined area reproduced from the pickup unit and one or more reference values, and decides an optimum recording power for the disc based on the detected plurality of recording powers. Thus, the recording power used by an active layer of the disc can be prevented from varying due to hardware error in the disc drive with respect to various kinds of discs.Type: GrantFiled: September 9, 2003Date of Patent: June 5, 2007Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-tae An
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Publication number: 20060215509Abstract: A recording and/or reproducing apparatus, medium, and method controlling a write speed of a disk drive. The method may includes measuring a predetermined disk quality evaluating factor affecting a servo control performance in multiple areas of a disk, determining an optimal write speed of the areas of the disk corresponding to the disk quality evaluating factor, and controlling a rotation speed of the disk at an optimal write speed of a corresponding area of the disk, depending on a position of the disk in which writing is to be performed, in a writing mode.Type: ApplicationFiled: February 28, 2006Publication date: September 28, 2006Applicant: TOSHIBA SAMSUNG STORAGE TECHNOLOGY KOREA CORPORATIONInventors: Kun-ho Yun, Jong-tae An
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Patent number: 7082097Abstract: A disc which insures a normal performance of an optical disc driver (ODD) and a method of manufacturing the same by accounting for disc defects. A reflectivity of the disc is within a range of 45–70% and a birefringence of the disc is within a range of 100–150 nm. Since the acquisition and manufacture of marginal discs which account for defect factors are possible, the influence of the defect factors can be continuously limited. Thus, a predetermined quality of discs can be used in the ODD.Type: GrantFiled: February 27, 2003Date of Patent: July 25, 2006Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-tae An
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Publication number: 20050050572Abstract: An optical disc having a structure by which the development of cracks near its center hole can be prevented includes a center hole and at least one sheet attached and surrounding the center hole, preventing the generation and development of cracks near the center hole.Type: ApplicationFiled: April 22, 2004Publication date: March 3, 2005Applicant: Samsung Electronics Co., Ltd.Inventors: Jong-tae An, Seong-yeon Park
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Publication number: 20040233810Abstract: A dual format hybrid storage medium includes a non-recordable section in which data to be reproduced is written and in which data cannot be updated, and a recordable section in which data in the non-recordable section having a high probability of error occurrence may be backed up. The high probability of error is determined based on a range of fluctuation of an RF envelope, an unstable phase locked loop signal, a value of a sum level or sub-beam added level of the reproduced data, an unstable focus lock signal, a range of fluctuation of a track error signal and a range of fluctuation of a focus error signal. A determination is made to test for errors if a freeze-frame is found, audio and video are out of sync, a data seek fails or a picture distortion or a picture mosaic effect occurs.Type: ApplicationFiled: May 18, 2004Publication date: November 25, 2004Applicant: Samsung Electronics Co., Ltd.Inventor: Jong-tae An
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Publication number: 20040047256Abstract: An apparatus and method determining an optimum recording power suitable for a disc loaded in a disc drive. The apparatus includes a pickup unit and a control unit. The pickup unit records data in a predetermined area on the disc and reproduces the recorded data from the disc. The control unit controls the disc drive to record data in the predetermined area of the disc using a preset reference recording power. The control unit detects a plurality of recording powers using reproduction signals of the predetermined area reproduced from the pickup unit and one or more reference values, and decides an optimum recording power for the disc based on the detected plurality of recording powers. Thus, the recording power used by an active layer of the disc can be prevented from varying due to hardware error in the disc drive with respect to various kinds of discs.Type: ApplicationFiled: September 9, 2003Publication date: March 11, 2004Applicant: Samsung Electronics Co., Ltd.Inventor: Jong-Tae An
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Publication number: 20030179690Abstract: A disc which insures a normal performance of an optical disc driver (ODD) and a method of manufacturing the same by accounting for disc defects. A reflectivity of the disc is within a range of 45-70% and a birefringence of the disc is within a range of 100-150 nm. Since the acquisition and manufacture of marginal discs which account for defect factors are possible, the influence of the defect factors can be continuously limited. Thus, a predetermined quality of discs can be used in the ODD.Type: ApplicationFiled: February 27, 2003Publication date: September 25, 2003Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventor: Jong-tae An
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Patent number: 5703453Abstract: The present invention provides a circuit for correcting a horizontal state of a disk transferring device including chucks for clamping a selected disk from a cartridge, a chuck transferring body for transferring the chucks right or left, a lower frame combined with the chucks and the chuck transferring body to move them left or right, and first and second frames formed integrally with the chucks, the chuck transferring body and lower frame and fixedly connected to belts to move the chucks, chucks transferring body and lower frame up and down by the belts.Type: GrantFiled: May 11, 1995Date of Patent: December 30, 1997Assignee: Samsung Electronics Co., Ltd.Inventor: Jong Tae An
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Patent number: 5566787Abstract: A method and apparatus is provided whereby several operations are simultaneously performed when transferring an object to a desired destination by controlling the output of a microcomputer using an elevator system. The method includes the steps of: vertically transferring a vertical transfer device to a predetermined position of the object according to a predetermined first control signal output from the microcomputer; starting to horizontally transfer a horizontal transfer device to the position of the object according to a predetermined second control signal output from the microcomputer and completing the operation of the horizontal transfer device according to a first external control signal; and starting to insert or withdraw the object into or from the destination according to a third control signal output from the microcomputer and completing the operation for inserting or withdrawing the object into or from the destination according to a second external control signal.Type: GrantFiled: May 26, 1995Date of Patent: October 22, 1996Assignee: Samsung Electronics Co., Ltd.Inventor: Jong-tae An