Patents by Inventor Shigeki Kitajima

Shigeki Kitajima 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).

  • Publication number: 20090197571
    Abstract: To provide technology whereby operations for registering authentication information when connecting wireless equipment to a network via an access point can be safely conducted at the store where the wireless equipment is purchased. Member identification information identifying a user and identification information for a first access point disposed in relation to the user are stored in association with each other. The member identification information is received from a terminal installed at a store that receives wireless equipment. Subsequently, identification information for the wireless equipment is received from the wireless equipment via a second access point disposed in relation to the store.
    Type: Application
    Filed: August 29, 2008
    Publication date: August 6, 2009
    Inventors: Shigeki Kitajima, Kazuho Miki
  • Publication number: 20090132367
    Abstract: There is disclosed an electronic advertisement system including: an advertisement displaying device; a local area network that transmits a summary of a content to a terminal; a wide area network that has at least one local area network and gains access to a detail of the content corresponding to receiving the summary by the terminal; and a center device that stores the details of the content, monitors the access to the stored detail of the content, and changes the schedule of an advertisement displayed on the advertisement displaying device located near the local area network based on the monitored result.
    Type: Application
    Filed: September 17, 2008
    Publication date: May 21, 2009
    Inventors: Takuji HAMADA, Hiroshi Kurihara, Kazuho Miki, Shigeki Kitajima
  • Patent number: 7356257
    Abstract: An optical communication network system is disclosed, which includes an optical switching apparatus. The optical switching apparatus includes an optical switch for switching and setting routes of an optical signal without being converted, a control unit for instructing the optical switch to execute a route switching operation, and a performance monitor for detecting performance of the optical signal having a route set by the optical switch. The performance monitor issues an alarm when the performance detected is deteriorated from predetermined performance. The control unit includes an alarm masking unit for masking the alarm issued from the performance monitor at least for a predetermined masking period from a starting time of a switching operation by the optical switch, and thus preventing the alarm from being issued.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: April 8, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shigeki Kitajima, Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro
  • Publication number: 20070283255
    Abstract: Conventionally, when a document is displayed on a mobile telephone whose screen size is limited, all the information cannot be displayed at a time. This drawback has resulted in a problem that grasping the content requires the button operation and screen switching. A Chinese-character Index is automatically created from the document, then being displayed. First, in the character-string extraction process 102, in the document inputted in the input process 101, the character string is divided and selected according to the character type, thereby creating a compact sentence. Next, in the character-string analysis process 104, priority order is allocated from the compact sentence. Moreover, in the Chinese-character Index creation process 106, necessary m×n characters are extracted from the character-string analysis result in accordance with the priority order. Then, these characters are two-dimensionally located in an m-row×n-column arrangement, thereby creating the Chinese-character Index.
    Type: Application
    Filed: February 9, 2005
    Publication date: December 6, 2007
    Inventors: Sadayuki Kina, Hiroshi Hanyu, Shigeki Kitajima
  • Patent number: 7272314
    Abstract: An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.
    Type: Grant
    Filed: August 25, 2004
    Date of Patent: September 18, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Yasuyuki Fukashiro, Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani, Hirohisa Sano
  • Patent number: 7242860
    Abstract: A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small N×N optical input/output switches, where N is 2 or greater than 2. The switches are configured among protection and working transmission lines. The small number of fibers for each switch improves repair and installation connection reliability and permits configurations that flexibly meet differing requirements. Also the fault is monitored with a fault check signal.
    Type: Grant
    Filed: October 18, 2002
    Date of Patent: July 10, 2007
    Assignee: Hitachi America, Ltd
    Inventors: Hiroki Ikeda, Shigeki Kitajima, Shoichi Hanatani
  • Patent number: 7206475
    Abstract: In an optical switching apparatus having redundantly-arranged optical switches, a route switching operation mode, an autonomic redundant switching operation mode and a compulsory redundant switching operation mode are discriminated from one another so that these operation modes are prevented from being executed at the same time, and also proper mask processing is performed at every switching operation mode. Therefore, emission of an undesired alarm and thus occurrence of malfunction when each switching operation is carried out can be prevented.
    Type: Grant
    Filed: September 20, 2004
    Date of Patent: April 17, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori
  • Patent number: 7194205
    Abstract: An optical transmission apparatus, an optical repeater using the optical transmission apparatus, and an optical cross-connect equipment for controlling switches depending on supervisory information, comprising: a doped fiber for amplifying an optical signal of wavelength ?d; a wavelength multiplexer for outputting a pumping light to the doped fiber; a wavelength multiplexer for multiplexing an amplified optical signal and a supervisory optical signal to as to output it to an optical fiber at downstream side; a pumping and supervisory light source; an optical coupler for distributing the light from the light source at a ratio of N:1 to the wavelength multiplexers; and a driver for controlling the light source by adding the supervisory information and a direct current signal.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: March 20, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Tsushima, Shigeki Kitajima, Yasushi Sawada
  • Publication number: 20050281556
    Abstract: An optical communication network system is disclosed, which includes an optical switching apparatus. The optical switching apparatus includes an optical switch for switching and setting routes of an optical signal without being converted, a control unit for instructing the optical switch to execute a route switching operation, and a performance monitor for detecting performance of the optical signal having a route set by the optical switch. The performance monitor issues an alarm when the performance detected is deteriorated from predetermined performance. The control unit includes an alarm masking unit for masking the alarm issued from the performance monitor at least for a predetermined masking period from a starting time of a switching operation by the optical switch, and thus preventing the alarm from being issued.
    Type: Application
    Filed: July 28, 2005
    Publication date: December 22, 2005
    Applicant: HITACHI, LTD.
    Inventors: Shigeki Kitajima, Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro
  • Patent number: 6933852
    Abstract: An optical communication network system is disclosed, which includes an optical switching apparatus. The optical switching apparatus includes an optical switch for switching and setting routes of an optical signal without being converted, a control unit for instructing the optical switch to execute a route switching operation, and a performance monitor for detecting performance of the optical signal having a route set by the optical switch. The performance monitor issues an alarm when the performance detected is deteriorated from predetermined performance. The control unit includes an alarm masking unit for masking the alarm issued from the performance monitor at least for a predetermined masking period from a starting time of a switching operation by the optical switch, and thus preventing the alarm from being issued.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: August 23, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Shigeki Kitajima, Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro
  • Publication number: 20050031346
    Abstract: In an optical switching apparatus having redundantly-arranged optical switches, a route switching operation mode, an autonomic redundant switching operation mode and a compulsory redundant switching operation mode are discriminated from one another so that these operation modes are prevented from being executed at the same time, and also proper mask processing is performed at every switching operation mode. Therefore, emission of an undesired alarm and thus occurrence of malfunction when each switching operation is carried out can be prevented.
    Type: Application
    Filed: September 20, 2004
    Publication date: February 10, 2005
    Applicant: Hitachi, Ltd.
    Inventors: Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori
  • Publication number: 20050025481
    Abstract: An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters. The “M1” ports of the first optical signal switch connected to the one terminal, and the “M2” ports of the second optical signal switch connected to the other terminal are larger than, or equal to 2.
    Type: Application
    Filed: August 25, 2004
    Publication date: February 3, 2005
    Inventors: Yasuyuki Fukashiro, Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani, Hirohira Sano
  • Patent number: 6839480
    Abstract: In an optical switching apparatus having redundantly-arranged optical switches, a route switching operation mode, an autonomic redundant switching operation mode and a compulsory redundant switching operation mode are discriminated from one another so that these operation modes are prevented from being executed at the same time, and also proper mask processing is performed at every switching operation mode. Therefore, emission of an undesired alarm and thus occurrence of malfunction when each switching operation is carried out can be prevented.
    Type: Grant
    Filed: October 15, 2003
    Date of Patent: January 4, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori
  • Patent number: 6813445
    Abstract: An optical crossconnect apparatus which includes one terminal connected to a transmission path from one optical transmission terminal station and another terminal connected to a transmission path from another optical transmission terminal station, a first optical signal switch having “M1” ports and “N1” ports, through which the optical signal can pass, a second optical signal switch having “M2” ports and “N2” ports, through which the optical signal can pass, and “L” optical signal repeaters, one end connected to the “N1” ports of the first optical signal switch, and the other end connected to the “N2” ports of the second optical switch. The “N1” and the “N2” ports are equal to “L” optical signal repeaters.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: November 2, 2004
    Assignees: Hitachi, Ltd., Hitachi Advanced Systems Corporation
    Inventors: Yasuyuki Fukashiro, Yukio Hayashi, Shigeki Kitajima, Tatsuo Kanetake, Masahiro Takatori, Shoichi Hanatani, Hirohisa Sano
  • Publication number: 20040179839
    Abstract: An optical transmission apparatus, an optical repeater using the optical transmission apparatus, and an optical cross-connect equipment for controlling switches depending on supervisory information, comprising: a doped fiber for amplifying an optical signal of wavelength &ogr;d; a wavelength multiplexer for outputting a pumping light to the doped fiber; a wavelength multiplexer for multiplexing an amplified optical signal and a supervisory optical signal to as to output it to an optical fiber at downstream side; a pumping and supervisory light source; an optical coupler for distributing the light from the light source at a ratio of N:1 to the wavelength multiplexers; and a driver for controlling the light source by adding the supervisory information and a direct current signal.
    Type: Application
    Filed: March 22, 2004
    Publication date: September 16, 2004
    Inventors: Hideaki Tsushima, Shigeki Kitajima, Yasushi Sawada
  • Patent number: 6778725
    Abstract: In an optical switching apparatus having redundantly-arranged optical switches, a route switching operation mode, an autonomic redundant switching operation mode and a compulsory redundant switching operation mode are discriminated from one another so that these operation modes are prevented from being executed at the same time, and also proper mask processing is performed at every switching operation mode. Therefore, emission of an undesired alarm and thus occurrence of malfunction when each switching operation is carried out can be prevented.
    Type: Grant
    Filed: March 8, 2002
    Date of Patent: August 17, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori
  • Patent number: 6731874
    Abstract: An optical transmission apparatus, an optical repeater using the optical transmission apparatus, and an optical cross-connect equipment for controlling switches depending on supervisory information, comprising: a doped fiber for amplifying an optical signal of wavelength Od; a wavelength multiplexer for outputting a pumping light to the doped fiber; a wavelength multiplexer for multiplexing an amplified optical signal and a supervisory optical signal to as to output it to an optical fiber at downstream side; a pumping and supervisory light source; an optical coupler for distributing the light from the light source at a ratio of N:1 to the wavelength multiplexers; and a driver for controlling the light source by adding the supervisory information and a direct current signal.
    Type: Grant
    Filed: June 14, 2002
    Date of Patent: May 4, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hideaki Tsushima, Shigeki Kitajima, Yasushi Sawada
  • Publication number: 20040081460
    Abstract: In an optical switching apparatus having redundantly-arranged optical switches, a route switching operation mode, an autonomic redundant switching operation mode and a compulsory redundant switching operation mode are discriminated from one another so that these operation modes are prevented from being executed at the same time, and also proper mask processing is performed at every switching operation mode. Therefore, emission of an undesired alarm and thus occurrence of malfunction when each switching operation is carried out can be prevented.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Applicant: HITACHI, LTD.
    Inventors: Sunao Kakizaki, Hideaki Tsushima, Shigeki Kitajima, Yasuyuki Fukashiro, Takashi Mori
  • Publication number: 20040076427
    Abstract: A network is protected against interruption of service while one or more faulty switches or optical fiber transmission lines are repaired or replaced, by an interconnecting configuration of small N×N optical input/output switches, where N is 2 or greater than 2. The switches are configured among protection and working transmission lines. The small number of fibers for each switch improves repair and installation connection reliability and permits configurations that flexibly meet differing requirements. Also the fault is monitored with a fault check signal.
    Type: Application
    Filed: October 18, 2002
    Publication date: April 22, 2004
    Applicant: Hitachi America, Ltd.
    Inventors: Hiroki Ikeda, Shigeki Kitajima, Shoichi Hanatani
  • Publication number: 20030128979
    Abstract: An optical communication network system is disclosed, which includes an optical switching apparatus. The optical switching apparatus includes an optical switch for switching and setting routes of an optical signal without being converted, a control unit for instructing the optical switch to execute a route switching operation, and a performance monitor for detecting performance of the optical signal having a route set by the optical switch. The performance monitor issues an alarm when the performance detected is deteriorated from predetermined performance. The control unit includes an alarm masking unit for masking the alarm issued from the performance monitor at least for a predetermined masking period from a starting time of a switching operation by the optical switch, and thus preventing the alarm from being issued.
    Type: Application
    Filed: March 11, 2002
    Publication date: July 10, 2003
    Inventors: Shigeki Kitajima, Sunao Kakizaki, Hideaki Tsushima, Yasuyuki Fukashiro