Patents by Inventor Shinobu Sasaki
Shinobu Sasaki 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: 7068467Abstract: Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.Type: GrantFiled: September 3, 2004Date of Patent: June 27, 2006Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Tomohiro Okada, Tetsuya Okai, Shinobu Sasaki, Tadayuki Iwakura, Naoki Koyama, Harunobu Saito, Makoto Morijiri
-
Publication number: 20060087927Abstract: First and second mobile carriers are accessible to individual cells defined in a storage. The first and second mobile carriers move along overlapped paths. First and second controller circuits are connected to the first and second mobile carriers, respectively. The second controller circuit is also connected to the first mobile carrier. Even when a defect occurs in the first controller circuit, the transport mechanism allows the second controller circuit to take over the control on the first mobile carrier from the first controller circuit. The control on the first mobile carrier serves to avoid interference between the first mobile carrier and any obstacle on the path. If the first mobile carrier is removed from the path of the second mobile carrier, the second mobile carrier is allowed to keep operating. The operation of the transport mechanism can be kept without any interruption.Type: ApplicationFiled: February 4, 2005Publication date: April 27, 2006Applicant: FUJITSU LIMITEDInventor: Shinobu Sasaki
-
Color printer, storage medium storing color printer driver program, and color printer driving method
Patent number: 7031023Abstract: A CPU of a personal computer operates as a driver of a color printer main body in accordance with software processing based on a printer driver program installed in a hard disk unit. Then, in the driver operation, the CPU determines whether or not an application requesting printing carries out application ICM. Further, the CPU causes a printer to execute printer ICM only in the case where the application ICM is set OFF, and the printer ICM is set to ON in consideration of the result of the determining and user setting of ON/OFF of the printer ICM accepted in advance.Type: GrantFiled: September 14, 2001Date of Patent: April 18, 2006Assignee: Toshiba Tec Kabushiki KaishaInventor: Shinobu Sasaki -
Publication number: 20060039248Abstract: Radio tags storing parts identifying information are arranged for the individual constituent modules such as tape drives and conveying robots of the library apparatus. Upon every rise of the apparatus, the conveying robots are moved to positions permitting read of the radio tags arranged on the individual constituent modules. The parts identifying information such as the serial number is read by the tag reader and stored in the non-volatile memory. When this is different from the serial number read in the preceding run, stored in the non-volatile memory, it is determined that the part has been replaced. The statistical information of the number of operating runs is then cleared, and management of the parts service life is started.Type: ApplicationFiled: December 1, 2004Publication date: February 23, 2006Applicant: FUJITSU LIMITEDInventor: Shinobu Sasaki
-
Patent number: 6877212Abstract: A magnetic disk apparatus includes a magnetic reproducing head portion, and a magnetic recording head including a lower magnetic core and an upper magnetic core having a end portion and a rear portion. The rear portion is formed using a negative resist or an electron beam resist to form a frame for plating above the end portion of the upper magnetic core head.Type: GrantFiled: September 28, 2001Date of Patent: April 12, 2005Assignee: Hitachi Global Storage Technologies Japan, Ltd.Inventors: Tomohiro Okada, Tetsuya Okai, Shinobu Sasaki, Tadayuki Iwakura, Naoki Koyama, Harunobu Saito, Makoto Morijiri
-
Publication number: 20050065648Abstract: There is provided a library device which can be restored to working order quickly and reliably even when a control board containing information necessary for the operation of the library device is replaced. The library device includes a cell array which consists of an array of multiple cells each of which contains one cartridge containing a magnetic tape, magnetic tape drives in which the cartridges are removably mounted and which access the storage medium contained in the cartridges, a robot which transfers the cartridges between the cell array and the magnetic tape drives, a main control board which controls the operation of the entire library device, a barcode label which represents ID information for identification of the library device, and cell flags which are marks used to recognize the locations of the cells composing the cell array.Type: ApplicationFiled: February 18, 2004Publication date: March 24, 2005Applicant: Fujitsu LimitedInventor: Shinobu Sasaki
-
Publication number: 20050024767Abstract: Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a en d portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.Type: ApplicationFiled: September 3, 2004Publication date: February 3, 2005Inventors: Tomohiro Okada, Tetsuya Okai, Shinobu Sasaki, Tadayuki Iwakura, Naoki Koyama, Harunobu Saito, Makoto Morijiri
-
Patent number: 6785473Abstract: Disclosed is a WDM network which has: a lightwave path which connects between clients and each of which is provided with an overhead, and a sub-network which is defined by dividing the WDM network. In this WDM network, the sub-network has a partial lightwave path to go through the sub-network, the overhead has a partial lightwave path supervisory control information region which is terminated at both nodes of the partial lightwave path, and when a fault occurs on a lightwave path, the fault information of partial lightwave path including the position information of fault occurred is added to the partial lightwave path supervisory control information region of the overhead.Type: GrantFiled: March 7, 2000Date of Patent: August 31, 2004Assignee: NEC Corp.Inventors: Shinobu Sasaki, Tatsuya Shiragaki, Shinya Nakamura, Takashi Yamazaki
-
Patent number: 6771907Abstract: An optical ring system having: a wavelength demultiplexer to which wavelength-multiplexed optical signal to be sent through an optical fiber from a previous node of multiple nodes is input and in which optical signal with each wavelength assigned to itself is demultiplexed; an optical ring device which is disposed in a predetermined node of the multiple nodes to the each wavelength assigned and which is composed of a failure existence judging part which terminates an overhead of each optical signal with a wavelength demultiplexed by the wavelength demultiplexer and judges whether a failure occurs in regard to a wavelength in a previous section through which optical signal with the assigned wavelength is sent, and a switching part which, when the failure existence judging means determines the occurrence of failure, selects a path that allows optical signal with the wavelength to be transmitted to the previous node while avoiding the previous section incurring the failure; and a wavelength multiplexer which mulType: GrantFiled: May 24, 2000Date of Patent: August 3, 2004Assignee: NEC CorporationInventors: Yuuki Yoshifuji, Shuichi Iida, Takashi Yamazaki, Youko Nakabayashi, Shinya Nakamura, Kimio Ozawa, Naoki Ando, Hitoshi Kikuchi, Tukasa Haga, Hiromitu Watanabe, Minoru Shinta, Hitoshi Takeshita, Shinobu Sasaki, Ryou Yamada, Naoya Henmi
-
Patent number: 6665263Abstract: The present invention provides a VP protection system and a VP protection method which forward messages quickly to nodes on an ATM network when an error occurs on the ATM network and reduce an error recovery time. The VP protection system, for use on an ATM network that includes a plurality of ATM nodes performing protection, a plurality of working VPs, and a plurality of standby VPs, exchanges messages among ATM nodes when an error occurs, one group of VPs at a time. An intermediate ATM node in a standby path at least comprises a VPG resource information management table, a VP resource information management table, a VPG configuration information management table, a VPG switching message receiving circuit, a VPG switching message sending circuit, node resource management circuits, a VPG resource allocation circuit, a VP expansion circuit, and a VP resource distribution circuit.Type: GrantFiled: August 12, 1999Date of Patent: December 16, 2003Assignee: NEC CorporationInventors: Mitsuru Kawabata, Shinobu Sasaki
-
Patent number: 6483663Abstract: Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.Type: GrantFiled: July 15, 1999Date of Patent: November 19, 2002Assignee: Hitachi, Ltd.Inventors: Tomohiro Okada, Tetsuya Okai, Shinobu Sasaki, Tadayuki Iwakura, Naoki Koyama, Takashi Kawabe, Harunobu Saito, Makoto Morijiri
-
Publication number: 20020057254Abstract: An input system includes an information generation part which generates input information based on a given input operation, a transmission part which transmits signals generated by having a plurality of different carrier frequencies modulated with the input information, and a reception part which receives the transmitted signals and demodulates the signals into the input information.Type: ApplicationFiled: April 20, 2001Publication date: May 16, 2002Applicant: Fujitsu Takamisawa Component LimitedInventors: Shigemi Kurashima, Masahiro Yanagi, Masaya Endo, Shinobu Sasaki, Norio Endo
-
Publication number: 20020041463Abstract: Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.Type: ApplicationFiled: July 15, 1999Publication date: April 11, 2002Inventors: TOMOHIRO OKADA, TETSUYA OKAI, SHINOBU SASAKI, TADAYUKI IWAKURA, NAOKI KOYAMA, TAKASHI KAWABE, HARUNOBU SAITO
-
Color printer, storage medium storing color printer driver program, and color printer driving method
Publication number: 20020036785Abstract: A CPU of a personal computer operates as a driver of a color printer main body in accordance with software processing based on a printer driver program installed in a hard disk unit. Then, in the driver operation, the CPU determines whether or not an application requesting printing carries out application ICM. Further, the CPU causes a printer to execute printer ICM only in the case where the application ICM is set OFF, and the printer ICM is set to ON in consideration of the result of the determining and user setting of ON/OFF of the printer ICM accepted in advance.Type: ApplicationFiled: September 14, 2001Publication date: March 28, 2002Applicant: Toshiba Tec Kabushiki KaishaInventor: Shinobu Sasaki -
Publication number: 20020013996Abstract: Disclosed is a magnetic disk apparatus including a magnetic reproducing head portion, and a magnetic recording head including an upper magnetic core having a end portion and a rear portion. As a resist for a frame which is used for forming the rear portion, a negative resist or an electron beam resist is used, whereby the frame is formed without any adverse effect of halation from a coil insulating film. That is, it is possible to manufacture a magnetic recording head in which the rear portion of an upper magnetic core is not emerged at the face opposed to a medium, and hence to obtain a magnetic disk apparatus exhibiting an areal recording density of 5 Gbit/in2 or more by mounting a magnetic recording/reproducing head including such a magnetic recording head.Type: ApplicationFiled: September 28, 2001Publication date: February 7, 2002Applicant: Hitachi, Ltd.Inventors: Tomohiro Okada, Tetsuya Okai, Shinobu Sasaki, Tadayuki Iwakura, Naoki Koyama, Harunobu Saito, Makoto Morijiri
-
Publication number: 20010046232Abstract: A storage circuit defines a first field for storing first header bits of a first payload signal of a first data unit, a second field, and a third field for storing signal first payload signal. The first header bits are equal in number to second header bits of a second payload signal of a second data unit. A division circuit divides the first header bits by a generator polynomial to produce a first error check code. The same generator polynomial is used to divide the second header bits to produce a second error check code. A remainder of division of hypothetical header bits by the generator polynomial is summed to the first error check code to produce a sum which is inserted into the second field of the storage circuit. The hypothetical header bits are greater in number than a total number of bits in the first and second fields, so that the first and second data units can be distinguished from each other by different error check results of the first and second data units.Type: ApplicationFiled: February 13, 2001Publication date: November 29, 2001Applicant: NEC CorporationInventors: Kazuo Takagi, Naoya Henmi, Shinobu Sasaki, Kurenai Murakami, Motoo Nishihara, Yoshinori Rokugou
-
Patent number: 6230075Abstract: A library apparatus of the present invention has directors which respectively determine operations of two carrying devices traveling along one traveling path. A servo control units move the carrying devices based on the determination of the directors. The serv control units obtain positional data of the carrying devices, and judge whether or not the carrying devices come into contact with each other by comparing these pieces of positional data. The servo control unit, when judging that the carrying devices come into contact with each other, stops a driving circuit of each carrying device. A drive of a motor for supplying each carrying device with power is thereby stopped, and the carrying device is stopped.Type: GrantFiled: March 31, 2000Date of Patent: May 8, 2001Assignee: Fujitsu LimitedInventors: Hiroaki Nishijo, Shinobu Sasaki
-
Patent number: 6161058Abstract: A library apparatus of the present invention has directors which respectively determine operations of two carrying devices traveling along one traveling path. A servo control units move the carrying devices based on the determination of the directors. The serv control units obtain positional data of the carrying devices, and judge whether or not the carrying devices come into contact with each other by comparing these pieces of positional data. The servo control unit, when judging that the carrying devices come into contact with each other, stops a driving circuit of each carrying device. A drive of a motor for supplying each carrying device with power is thereby stopped, and the carrying device is stopped.Type: GrantFiled: January 30, 1998Date of Patent: December 12, 2000Assignee: Fujitsu LimitedInventors: Hiroaki Nishijo, Shinobu Sasaki
-
Patent number: 6144519Abstract: A library apparatus in which a plurality of cell drums are divided into two groups respectively placed on the left and right side of a recording/reproducing unit placed in a central part thereof. In this library apparatus, rails are placed in a direction along which the cell drums and the recording/reproducing unit are arranged. The conveying of media, which are contained in the cell drums placed on the left side of the recording/reproducing unit, is assigned to an accessor placed on the left side thereof. Simultaneously, the conveying of media, which are contained in the cell drums placed on the right side of the recording/reproducing unit, is assigned to an accessor placed on the right side thereof. A robot hand of each of the accessors is opened and closed by a turn of a motor. At that time, a power supply is turned off. Moreover, the robot hand is prevented by a locking mechanism from popping out of the accessor. Furthermore, ordinary cartridges are discriminated from cleaning cartridges.Type: GrantFiled: October 31, 1995Date of Patent: November 7, 2000Assignee: Fujitsu LimitedInventors: Yasuhiko Hanaoka, Kazuhiko Nishizawa, Shinobu Sasaki, Hiroshi Shimada, Masaki Takeuti
-
Patent number: 5126907Abstract: A thin film magnetic head has a first magnetic core member carried by a substrate, a gap layer formed on the first magnetic core member, and a second magnetic core member formed in a spaced relation with the first magnetic core member. The second magnetic core member is coupled to the first magnetic core member to form a magnetic path and to have an end portion of the gap layer sandwiched by gap defining portions of the first and second magnetic core members. A coil conductor is wound about the magnetic path. In one embodiment, the first magnetic core member includes a first magnetic layer made of a magnetic material having stable magnetic properties during heat treatment and the second magnetic core member includes a second magnetic layer made of a material having a saturation flux density higher than that of the material of the first magnetic core member.Type: GrantFiled: May 21, 1990Date of Patent: June 30, 1992Assignee: Hitachi, Ltd.Inventors: Yoshihiro Hamakawa, Isamu Yuito, Hisashi Takano, Naoki Koyama, Eijin Moriwaki, Shinobu Sasaki, Kazuo Shiiki