Patents by Inventor Hiroyuki Oohata
Hiroyuki Oohata 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: 7343083Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: GrantFiled: February 27, 2002Date of Patent: March 11, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Patent number: 7340150Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: GrantFiled: February 27, 2002Date of Patent: March 4, 2008Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Patent number: 6549717Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: GrantFiled: March 6, 2000Date of Patent: April 15, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Patent number: 6493306Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: September 20, 2001Date of Patent: December 10, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6466530Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: September 20, 2001Date of Patent: October 15, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6438079Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: September 20, 2001Date of Patent: August 20, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Publication number: 20020090207Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: ApplicationFiled: February 27, 2002Publication date: July 11, 2002Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Publication number: 20020085831Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: ApplicationFiled: February 27, 2002Publication date: July 4, 2002Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Publication number: 20020024900Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: ApplicationFiled: September 20, 2001Publication date: February 28, 2002Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Publication number: 20020015372Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: ApplicationFiled: September 20, 2001Publication date: February 7, 2002Applicant: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6337845Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: April 24, 2000Date of Patent: January 8, 2002Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Publication number: 20010043792Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: ApplicationFiled: March 6, 2000Publication date: November 22, 2001Inventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Patent number: 6307821Abstract: In an optical disk drive apparatus for recording data on and reproducing data from an optical disk using both of data recording tracks formed of grooves and lands, is divided into an integer number of sectors, and the address data area of each sector is shifted in the radial direction. When a first sector is scanned, a data from the address data area of the first sector is read as a first direct address data, and a data from the address data area of an adjacent sector is read as a second direct address data. A first modified address data of the first sector is produced by modifying the second direct address data with an inter-track address difference, and a correct address value of the first sector is produced using the first direct address data and the first modified address data.Type: GrantFiled: April 25, 2000Date of Patent: October 23, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroyuki Oohata, Kazuhiko Nakane, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6212145Abstract: In an optical disk drive apparatus for recording data on and reproducing data from an optical disk using both of data recording tracks formed of grooves and lands, is divided into an integer number of sectors, and the address data area of each sector is shifted in the radial direction. When a first sector is scanned, a data from the address data area of the first sector is read as a first direct address data, and a data from the address data area of an adjacent sector is read as a second direct address data. A first modified address data of the first sector is produced by modifying the second direct address data with an inter-track address difference, and a correct address value of the first sector is produced using the first direct address data and the first modified address data.Type: GrantFiled: March 17, 2000Date of Patent: April 3, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroyuki Oohata, Kazuhiko Nakane, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6201775Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: June 14, 1999Date of Patent: March 13, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6160775Abstract: In an optical disk drive apparatus for recording data on and reproducing data from an optical disk using both of data recording tracks formed of grooves and lands, is divided into an integer number of sectors, and the address data area of each sector is shifted in the radial direction. When a first sector is scanned, a data from the address data area of the first sector is read as a first direct address data, and a data from the address data area of an adjacent sector is read as a second direct address data. A first modified address data of the first sector is produced by modifying the second direct address data with an inter-track address difference, and a correct address value of the first sector is produced using the first direct address data and the first modified address data.Type: GrantFiled: April 29, 1997Date of Patent: December 12, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroyuki Oohata, Kazuhiko Nakane, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6134382Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: GrantFiled: June 10, 1999Date of Patent: October 17, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida
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Patent number: 6097684Abstract: In an optical disk drive apparatus for recording data on and reproducing data from an optical disk using both of data recording tracks formed of grooves and lands, is divided into an integer number of sectors, and the address data area of each sector is shifted in the radial direction. When a first sector is scanned, a data from the address data area of the first sector is read as a first direct address data, and a data from the address data area of an adjacent sector is read as a second direct address data. A first modified address data of the first sector is produced by modifying the second direct address data with an inter-track address difference, and a correct address value of the first, sector is produced using the first direct address data and the first modified address data.Type: GrantFiled: January 25, 1999Date of Patent: August 1, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroyuki Oohata, Kazuhiko Nakane, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6091699Abstract: The invention provides an optical disk medium having a recording spiral formed by connecting groove tracks and land tracks alternately, and permitting detection of a connecting point between a groove track and a land track reliably is provided, and a method of tracking the optical disk medium and an optical disk drive apparatus for driving the optical disk medium. One part of an identification signal area is shifted by a predetermined distance in one radial direction from the center of a groove, while another part of the identification signal area is shifted by the same distance in the opposite radial direction from the center of the groove. A land/groove polarity of a sector is determined by the polarity of a tracking error signal and the order of the polarities during reproduction of an identification signal.Type: GrantFiled: April 10, 1997Date of Patent: July 18, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kazuhiko Nakane, Hiroyuki Oohata, Masato Nagasawa, Kenji Gotoh, Yoshinobu Ishida
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Patent number: 6009236Abstract: A digital video signal record and playback device for recording on a recording medium a digital video signal coded by using a motion compensation prediction and an orthogonal transform and playing back data from the recording medium. In a data arrangement of a digital video signal, an I picture which can be independently represented in a picture is divided into n areas in the vertical direction, and the data is arranged from the front of one GOP in the unit of area by giving a priority to an area located at the center of the screen. A playback picture is outputted by playing back the I picture read from the recording medium in the unit of area unit. In the case where the whole I picture area cannot be read within a definite time, the area which cannot be read are interpolated by the use of the data of the preceding screen.Type: GrantFiled: June 18, 1997Date of Patent: December 28, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hidetoshi Mishima, Yoshinori Asamura, Yoshiko Hatano, Shuji Sotoda, Satoshi Kurahashi, Takahiro Nakai, Tadashi Kasezawa, Masato Nagasawa, Hiroyuki Oohata, Yoshinobu Ishida