Patents by Inventor Shigeo Matsunaga

Shigeo Matsunaga 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: 4736249
    Abstract: A facsimile transmission control system comprising a transmitting side and a receiving side facsimile device, characterized in that the transmitting side facsimile device transmits a calling signal for calling the receiving side facsimile device, when the transmitting side receives a response signal indicating a receiving function and a completion of receiving preparation transmitted from the receiving side within a predetermined term after the transmitting side transmits the calling signal, the transmitting side transmits, in succession, a control signal indicating a transmitting function and an image data to the receiving side, meanwhile, when the transmitting side does not receive the response signal indicating the receiving function and the completion of receiving preparation transmitted from the receiving side within a predetermined term after the transmitting side transmits the calling signal, the transmitting side transmits the control signal indicating the transmitting function.
    Type: Grant
    Filed: April 23, 1984
    Date of Patent: April 5, 1988
    Assignee: Fujitsu Limited
    Inventors: Yoshio Iizuka, Shigeo Matsunaga
  • Patent number: 4646160
    Abstract: A facsimile apparatus for transmitting/receiving image data has a first memory for storing image data of one or more pages, a second memory for storing external apparatus number and time data, and an automatic send control for comparing the time data stored in the second memory with a time signal from a clock, and, upon detecting a coincidence thereof, for supplying the external apparatus number stored in the second memory to a network control to cause an automatic dialing thereof to connect a line with the external apparatus, so that image data is transmitted to or received from the external apparatus. The user of each facsimile apparatus can set or modify polling reception originating terminals, repeating destinations, polling/multi-address calling destinations or the like. The facsimile apparatus is convenient for a user who desires to perform facsimile transmission at a desired time.
    Type: Grant
    Filed: March 14, 1984
    Date of Patent: February 24, 1987
    Assignee: Fujitsu Limited
    Inventors: Yoshio Iizuka, Shigeo Matsunaga, Satoshi Ogawa
  • Patent number: 4543612
    Abstract: A facsimile system comprises a data compression circuit for generating a run length, a ROM table for coding a run length into compressed data, and a comparator. The comparator compares given compressed data with a sequence of compressed data transmitted from the data compression circuit. When a match occurs therebetween, reproduced data or run-length data for the given compressed data is obtained in the data compression circuit.
    Type: Grant
    Filed: December 27, 1982
    Date of Patent: September 24, 1985
    Assignee: Fujitsu Limited
    Inventors: Shigeo Matsunaga, Yoshio Iizuka, Tadaaki Suzuki