Patents by Inventor Yasutoshi Maeda

Yasutoshi Maeda 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).

  • Data transmission apparatus and method
    Patent number: 6014765
    Abstract: A data transmission apparatus having a storage device for storing at least one structure data piece of a data processing device in a receiving data processing apparatus, a computation device for computing a transmission error detection code from the structure data stored in the storage device and a device for attaching the transmission error detection code computed by the computation device to the structure data stored in the storage device.
    Type: Grant
    Filed: June 10, 1997
    Date of Patent: January 11, 2000
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasutoshi Maeda, Katsuya Mitsutake, Koh Kamizawa, Yuji Kozawa, Takanori Hisanaga, Ichiro Yamashita
  • Data transmission apparatus for controlling contention between data transmissions of a plurality of types of applications by setting transmission internal according to each application bandwidth requirement
    Patent number: 6003086
    Abstract: A data transmission apparatus in which the bandwidth necessary for an application is determined and is communicated to a transmission interval counting function. The transmission interval counting function determines a transmission interval according to the necessary bandwidth and effects transmit control on a transmission unit transmitting function with timing set at this transmission interval so as to transfer data in a desired bandwidth. Owing to the above construction, even when a plurality of types of applications for transmitting data at desired times exist and they perform data transmissions while sharing the use of a network, the contention between the data transmissions in the network can be prevented from occurring. This prevents data losses and delays in data transmission from increasing.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: December 14, 1999
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Katsuya Mitsutake, Yasutoshi Maeda
  • Data transmission system having feature for predicting time completion based on changing of states of use of bandwidth and time required for retransmission
    Patent number: 5907556
    Abstract: The present invention provides a data transmission system having a data sending unit, a data receiving unit and a data transmission medium for data transmission from the data sending unit to the data receiving unit, which comprises an element for generating feature information of data transmission from the data sending unit to the data receiving unit in advance of execution of the data transmission, an element for storing change of states of use of a bandwidth by data transmission now under execution, an element for predicting a time of completion of the data transmission now under execution based on the change of states of use of the bandwidth and the feature information of the data transmission now under execution, an element for determining a transmission rate for data transmission to be next executed at the time of completion of the data transmission now under execution based on the change of states of use of the bandwidth and the feature information of the data transmission to be next executed, and an el
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: May 25, 1999
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Takanori Hisanaga, Yuji Kozawa, Yasutoshi Maeda, Katsuya Mitsutake