Patents by Inventor Akihito YOSHIMI
Akihito YOSHIMI 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).
-
Patent number: 10049697Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.Type: GrantFiled: October 20, 2016Date of Patent: August 14, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshihisa Takahashi, Akihito Yoshimi, Kenji Takauchi, Yasumori Hino, Motoshi Ito
-
Patent number: 9966097Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.Type: GrantFiled: March 31, 2017Date of Patent: May 8, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Yoshihisa Takahashi, Akihito Yoshimi, Kenji Takauchi, Yasumori Hino, Motoshi Ito
-
Patent number: 9899051Abstract: An information recording and playback device includes a recording and playback unit, and a controller. The controller divides a recording area of an optical disk into a first recording area which is at an inner circumference side, and a second recording area which is at an outer circumference side. The controller controls the recording and playback unit such that the unit records or plays back data in the first recording area at a first speed, and records or plays back data in the second recording area at a second speed slower than the first speed. The predetermined radius is set to a boundary between an area in which a control residual exceeds a predetermined reference value when servo control related to focusing and tracking is performed on the recording area of the optical disk, and an area in which the control residual does not exceed the predetermined reference value.Type: GrantFiled: December 3, 2015Date of Patent: February 20, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Harumitsu Miyashita, Akihito Yoshimi, Yoshihisa Takahashi
-
Publication number: 20170206923Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Inventors: Yoshihisa TAKAHASHI, Akihito YOSHIMI, Kenji TAKAUCHI, Yasumori HINO, Motoshi ITO
-
Publication number: 20170040033Abstract: An information recording method of the present disclosure is an information recording method for recording information on a write-once information recording medium, including one or more recording layers, each of the recording layers being spiral-shaped on which a land track and a groove track are alternately repeated as recording tracks, each of the recording tracks being divided into blocks, each of the blocks being a minimum unit in which recording is performed. The information recording method includes: recording the information on the information recording medium in a unit of each of the blocks; and controlling recording on the information recording medium. In the control step, switching is performed whether to perform recording in a block to be recorded in which the information is to be recorded next among the blocks based on recording conditions of the recording tracks adjacent on both sides of the block to be recorded.Type: ApplicationFiled: October 20, 2016Publication date: February 9, 2017Inventors: Yoshihisa TAKAHASHI, Akihito YOSHIMI, Kenji TAKAUCHI, Yasumori HINO, Motoshi ITO
-
Patent number: 9542971Abstract: The optical disc library apparatus of the present disclosure includes one or more magazines configured to store a plurality of optical discs, a plurality of optical disc drives configured to perform recording or reproducing on or from the optical discs, a changer mechanism configured to perform loading or ejecting any optical disc stored in the magazine to or from any optical disc drive, and a controller configured to control the changer mechanism. The magazine includes magazine-disc association information associating magazine information specifying the magazine with disc information specifying a plurality of optical discs to be stored in the magazine. The controller outputs the magazine-disc association information.Type: GrantFiled: November 20, 2015Date of Patent: January 10, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Yoshihisa Takahashi, Akihito Yoshimi
-
Publication number: 20160163347Abstract: An information recording and playback device includes a recording and playback unit, and a controller. The controller divides a recording area of an optical disk into a first recording area which is at an inner circumference side, and a second recording area which is at an outer circumference side. The controller controls the recording and playback unit such that the unit records or plays back data in the first recording area at a first speed, and records or plays back data in the second recording area at a second speed slower than the first speed. The predetermined radius is set to a boundary between an area in which a control residual exceeds a predetermined reference value when servo control related to focusing and tracking is performed on the recording area of the optical disk, and an area in which the control residual does not exceed the predetermined reference value.Type: ApplicationFiled: December 3, 2015Publication date: June 9, 2016Inventors: Harumitsu MIYASHITA, Akihito YOSHIMI, Yoshihisa TAKAHASHI
-
Publication number: 20160155463Abstract: The optical disc library apparatus of the present disclosure includes one or more magazines configured to store a plurality of optical discs, a plurality of optical disc drives configured to perform recording or reproducing on or from the optical discs, a changer mechanism configured to perform loading or ejecting any optical disc stored in the magazine to or from any optical disc drive, and a controller configured to control the changer mechanism. The magazine includes magazine-disc association information associating magazine information specifying the magazine with disc information specifying a plurality of optical discs to be stored in the magazine. The controller outputs the magazine-disc association information.Type: ApplicationFiled: November 20, 2015Publication date: June 2, 2016Inventors: Yoshihisa TAKAHASHI, Akihito YOSHIMI
-
Patent number: 8898684Abstract: An optical disc device according to the present invention performs, in parallel, a first control to convey a first tray in the first optical disc drive group from the disc replacing position to the recording and reproducing position, and a second control to convey a second tray in the second optical disc drive group 40R from the recording and reproducing position to the disc replacing position. The second tray is opposed to the first tray.Type: GrantFiled: September 25, 2013Date of Patent: November 25, 2014Assignee: Panasonic CorporationInventors: Yuuichi Kuze, Hirokuni Hagita, Daichi Tamaki, Akihito Yoshimi
-
Publication number: 20140089950Abstract: The present disclosure provides an optical disc device with which the disc replacing time can be further suppressed. The optical disc device according to the present disclosure performs, in parallel, a first control to convey a first tray in the first optical disc drive group 40L from the disc replacing position to the recording and reproducing position and a second control to convey a second tray in the second optical disc drive group 40R from the recording and reproducing position to the disc replacing position, the second tray being opposed to the first tray.Type: ApplicationFiled: September 25, 2013Publication date: March 27, 2014Applicant: Panasonic CorporationInventors: Yuuichi KUZE, Hirokuni HAGITA, Daichi TAMAKI, Akihito YOSHIMI
-
Publication number: 20110222382Abstract: An optical disc drive and optical disc reading method according to the present invention is designed to perform a read operation with good stability even on a slim disc that could produce a significant axial runout. For that purpose, the optical disc drive determines, by the time it has taken for the number of revolutions of a motor that rotates the optical disc loaded to reach a predetermined number, whether the disc loaded is a lightweight disc or not (in Step 202). The drive also determines, by a signal obtained from the optical disc, what the size of the optical disc loaded is (in Step 204). And if the drive decides, based on results of these processing steps, that the disc loaded is a slim disc, then the drive increases the number of revolutions of the optical disc to a predetermined number or more in Step 207 to minimize the influence of axial runout.Type: ApplicationFiled: March 7, 2011Publication date: September 15, 2011Inventors: Takahiro SATO, Akihito YOSHIMI, Takeshi SHIMAMOTO, Hiroshi YOSHIDA