Patents by Inventor Takuo Tsuzuki

Takuo Tsuzuki 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: 6510556
    Abstract: A video distributing apparatus for storing video data and distributing it to a viewer has a memory for video data and a schedule table for holding a distribution schedule of the stored video data A controller controls the distribution of the stored video data. A reservation request includes a title of the video data to be distributed, a channel to be used for distribution of the video data of the title, and information to designate a time to start the distribution.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: January 21, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takuo Kusaba, Yukio Shimamoto, Takuo Tsuzuki
  • Patent number: 5815564
    Abstract: In an incoming call service by which an extension can be directly called when a call comes in from another office, a dedicated terminal for selecting an extension to which the incoming call is connected is installed to enable the user to select it as desired, thereby increasing usage of call incoming lines for effective use. An exchange which connects an incoming call from another office directly to an extension, an input device for accepting specification of an extension corresponding to a specific incoming call, and a controller which includes a definition device for defining the correspondence between the specific incoming call and extension are provided. Upon receipt of an incoming call, the exchange connects the call to its corresponding extension in response to the correspondence defined in the definition device.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: September 29, 1998
    Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd., Hitachi Communication Systems, Inc.
    Inventors: Takuo Tsuzuki, Masahiro Kumon, Yoshiharu Kondoh, Mitsuhiro Kotake, Masayuki Hashimura
  • Patent number: 5563940
    Abstract: In an incoming call service by which an extension can be directly called when a call comes in from another office, a dedicated terminal for selecting an extension to which the incoming call is connected is installed to enable the user to select it as desired, thereby increasing usage of call incoming lines for effective use. An exchange which connects an incoming call from another office directly to an extension, an input device for accepting specification of an extension corresponding to a specific incoming call, and a controller which includes a definition device for defining the correspondence between the specific incoming call and extension are provided. Upon receipt of an incoming call, the exchange connects the call to its corresponding extension in response to the correspondence defined in the definition device.
    Type: Grant
    Filed: November 15, 1995
    Date of Patent: October 8, 1996
    Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd., Hitachi Communications Systems, Inc.
    Inventors: Takuo Tsuzuki, Masahiro Kumon, Yoshiharu Kondoh, Mitsuhiro Kotake, Masayuki Hashimura
  • Patent number: 5541992
    Abstract: In an incoming call service by which an extension can be directly called when a call comes in from another office, a dedicated terminal for selecting an extension to which the incoming call is connected is installed to enable the user to select it as desired, thereby increasing usage of call incoming lines for effective use. An exchange which connects an incoming call from another office directly to an extension, an input device for accepting specification of an extension corresponding to a specific incoming call, and a controller which includes a definition device for defining the correspondence between the specific incoming call and extension are provided. Upon receipt of an incoming call, the exchange connects the call to its corresponding extension in response to the correspondence defined in the definition device.
    Type: Grant
    Filed: June 11, 1993
    Date of Patent: July 30, 1996
    Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd., Hitachi Communication Systems, Inc.
    Inventors: Takuo Tsuzuki, Masahiro Kumon, Yoshiharu Kondoh, Mitsuhiro Kotake, Masayuki Hashimura
  • Patent number: 5519874
    Abstract: A subscriber terminal service system, which has a switchboard connected to a plurality of subscriber terminals and a computer connected with the switchboard and executes services to subscribers, has the functions of setting a flag indicative of the possibility/impossibility of the execution of an application on the basis of a message sent from the computer, referring to the flag in response to a service request sent from the subscriber terminal to determine whether or not the execution of the requested application should be permitted, sending a control message to the switchboard when the condition of possibility/impossibility of the execution of an application on the computer, and changing the content of the flag in the switchboard on the basis of the control message. The start or stop of any application executed in the computer is made through a console device connected with the computer or by a scheduler provided in the computer.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: May 21, 1996
    Assignees: Hitachi, Ltd., Hitachi Microcomputer System, Ltd.
    Inventors: Junko Yamagishi, Takuo Tsuzuki, Noboru Mizuhara, Tetsuo Sakuma, Tomoaki Tsunoda
  • Patent number: 5502758
    Abstract: A mobile terminal position information display system which detects accurate information on a position between a radio controller and a radio telephone and displays the position and locus of movement of the radio telephone. The system includes one or more mobile terminals which make communication by radio to output signals indicative of their positions; one or more mobile terminal control units for transmitting/receiving a signal to/from a mobile terminal, at least one exchange to which a mobile terminal control unit is connected, and an output processor including an analyzer for analyzing the signal indicative of the position of the mobile terminal from the reporting unit to output information on the position of the mobile terminal. The mobile terminal control units each include a detector for detecting a signal indicative of the position of a mobile terminal.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: March 26, 1996
    Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.
    Inventors: Takuo Tsuzuki, Yasuhide Tabuchi, Yasumasa Ishiwata
  • Patent number: 5434904
    Abstract: A mobile terminal position information display system which detects accurate information on a position between a radio controller and a radio telephone and displays the position and locus of movement of the radio telephone. The system includes one or more mobile terminals which make communication by radio to output signals indicative of their positions; one or more mobile terminal control units for transmitting/receiving a signal to/from a mobile terminal, at least one exchange to which a mobile terminal control unit is connected, and an output processor including an analyzer for analyzing the signal indicative of the position of the mobile terminal from the reporting unit to output information on the position of the mobile terminal. The mobile terminal control units each include a detector for detecting a signal indicative of the position of a mobile terminal.
    Type: Grant
    Filed: July 21, 1993
    Date of Patent: July 18, 1995
    Assignees: Hitachi, Ltd., Hitachi Software Engineering Co., Ltd.
    Inventors: Takuo Tsuzuki, Yasuhide Tabuchi, Yasumasa Ishiwata