Patents by Inventor Masanori Ohkawa

Masanori Ohkawa 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: 8106775
    Abstract: A checkout system performs checkout of articles. The checkout system includes an LCD touch screen 11 for specifying a second article different from a first article having data on the article registered as first article data, a barcode scanner 12 for recognizing a presented article which is the first article presented, and a control unit 314 that determines whether the presented article specified as the second article by the LCD touch screen 11 is not the second article.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: January 31, 2012
    Assignees: Fujitsu Frontech Limited, Okuwa Co., Ltd.
    Inventors: Masanori Ohkawa, Mitsuo Watanabe, Shunji Shimada
  • Publication number: 20090219153
    Abstract: A checkout system performs checkout of articles. The checkout system includes an LCD touch screen 11 for specifying a second article different from a first article having data on the article registered as first article data, a barcode scanner 12 for recognizing a presented article which is the first article presented, and a control unit 314 that determines whether the presented article specified as the second article by the LCD touch screen 11 is not the second article.
    Type: Application
    Filed: September 7, 2005
    Publication date: September 3, 2009
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED, OKUWA CO., LTD.
    Inventors: Masanori Ohkawa, Mitsuo Watanabe, Shunji Shimada
  • Patent number: 7549584
    Abstract: A reading apparatus reads identification information attached on an object located outside of the reading apparatus by optically scanning a surface of the object. The reading apparatus includes a supporting member that supports a optical deflecting unit and that rotatably supports a light collecting unit.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: June 23, 2009
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuharu Ishii, Masanori Ohkawa, Shunji Shimada
  • Patent number: 7431214
    Abstract: A plurality of bar-code candidate areas are calculated from scan data that is acquired by scanning a bar code. Feature data, which represents a specific feature, is calculated for each of the bar-code candidate areas. The bar-code candidate areas are evaluated based on their feature data to thereby determine a bar-code candidate area that has the highest probability of being a bar code. The specific feature includes any one or more of length of a differential waveform, average energy, and number of peaks in the differential waveform.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: October 7, 2008
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 7311259
    Abstract: A bar code reader includes a first circuit board on which a photodiode, which receives light reflected from a bar code, is installed and a second circuit board on which a processing unit that processes a signal output from the photodiode. The position at which the first circuit board is placed can be decided irrespective of the position at which the second circuit board is placed. The first circuit board is placed at a position that is most suitable for receiving light reflected from the bar code.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: December 25, 2007
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20070119936
    Abstract: A barcode reader outputs a beep sound upon successfully reading a barcode. The barcode reader includes separate buttons for changing an output volume level and output tine level of the beep sound. The buttons are provided on a surface of the barcode reader.
    Type: Application
    Filed: March 7, 2006
    Publication date: May 31, 2007
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Masanori Ohkawa, Mitsuharu Ishii, Mitsuo Watanabe, Masakazu Yokota, Shunji Shimada, Taku Ando
  • Publication number: 20070119934
    Abstract: A scan beam formed by the optical scanning unit is divided by the first scan beam dividing unit and the second scan beam dividing unit. The first scan beam dividing unit and the second scan beam dividing unit are disposed in such a manner that the scan beams divided by the first scan beam dividing unit traverse a rotation axis of the optical scanning unit before reaching the second scan beam dividing unit.
    Type: Application
    Filed: February 27, 2006
    Publication date: May 31, 2007
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Masanori Ohkawa, Mitsuharu Ishii, Mitsuo Watanabe, Masakazu Yokota, Shunji Shimada
  • Publication number: 20070119946
    Abstract: A reading apparatus reads identification information attached on an object located outside of the reading apparatus by optically scanning a surface of the object. The reading apparatus includes a supporting member that supports a optical deflecting unit and that rotatably supports a light collecting unit.
    Type: Application
    Filed: February 23, 2006
    Publication date: May 31, 2007
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Mitsuharu Ishii, Masanori Ohkawa, Shunji Shimada
  • Patent number: 7222032
    Abstract: A time for replacement of a laser diode is decided based on a value of operating current of the laser diode and a value of intensity of laser light output from the laser diode.
    Type: Grant
    Filed: December 29, 2003
    Date of Patent: May 22, 2007
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 7137559
    Abstract: Management information, which is information about hardware in or software installed in the bar-code reader, is stored in a storage unit in the bar-code reader. The management information may be acquired from an external unit or read from a bar code.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: November 21, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa, Mitsuharu Ishii
  • Patent number: 7083101
    Abstract: A signal obtained by optically scanning a bar code is subjected to differentiation to obtain differential data. Peak-to-peak distances are calculated from the differential data. When a peak-to-peak ?Tx distance is y times of a basic width, frequency f(x,y) will be, f(x,y)=y/?Tx. A frequency map is prepared from the frequencies calculated. Transition routes in which one frequency each is selected. from each of the peak-to-peak distances, are formed. A transition route for which an error in frequencies is the least is taken as the most suitable transition route. An average of the frequencies included in the transition route is taken as a frequency f0 of the basic width.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: August 1, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 7077322
    Abstract: An extractor extracts a part that is apparently a bar-code signal from a signal that is subjected to opto-electric conversion. A narrow-band differential processor forms a waveform of an edge by differentiating by using a module frequency. The module point extractor extracts the module point from the waveform. The maximum likelihood judgment processor 5f performs ternarizing based on a maximum likelihood method by using broader information.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: July 18, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 7055748
    Abstract: A signal fetching unit fetches a signal that includes binarized information disposed with a predetermined information length, from a barcode. A module-frequency extracting unit extracts a module frequency equivalent to a basic unit length in the binarized information from the signal. A frequency shifting unit shifts a frequency to 0 Hz based on the module frequency for the signal. A low pass filter passes a low frequency component included in an output signal from the frequency shifting unit. A module-point extracting unit extracts a module point synchronized with the signal and that has the module frequency, based on the module frequency extracted and an output signal of the low pass filter. A demodulating unit demodulates a character of the barcode based on the module point extracted.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: June 6, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Kozo Yamazaki, Masanori Ohkawa, Mitsuo Watanabe, Takashi Kaku
  • Patent number: 7051936
    Abstract: A bar code reader has an arrangement to communicate with a host apparatus. The bar code reader includes a read unit that reads a bar code attached to an article, and outputs bar code information corresponding to the read bar code; a term information acquisition unit that acquires term information included in the bar code information; and a term expiration check unit that checks whether the term of the article has expired based on the term information. A notification unit notifies that the term of the article has expired upon determination by the term expiration check unit that the term of the article has expired.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: May 30, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Kozo Yamazaki, Mitsuharu Ishii, Masanori Ohkawa, Isao Iwaguchi, Hideo Miyazawa
  • Publication number: 20060102727
    Abstract: A signal obtained by optically scanning a bar code is subjected to differentiation to obtain differential data. Peak-to-peak distances are calculated from the differential data. When a peak-to-peak ?Tx distance is y times of a basic width, frequency f(x,y) will be, f(x,y)=y/?Tx. A frequency map is prepared from the frequencies calculated. Transition routes in which one frequency each is selected. from each of the peak-to-peak distances, are formed. A transition route for which an error in frequencies is the least is taken as the most suitable transition route. An average of the frequencies included in the transition route is taken as a frequency f0 of the basic width.
    Type: Application
    Filed: December 29, 2005
    Publication date: May 18, 2006
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20060086800
    Abstract: A bar code reader has an arrangement to communicate with a host apparatus. The bar code reader includes a read unit that reads a bar code attached to an article, and outputs bar code information corresponding to the read bar code; a term information acquisition unit that acquires term information included in the bar code information; and a term expiration check unit that checks whether the term of the article has expired based on the term information. A notification unit notifies that the term of the article has expired upon determination by the term expiration check unit that the term of the article has expired.
    Type: Application
    Filed: December 8, 2005
    Publication date: April 27, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Mitsuo Watanabe, Kozo Yamazaki, Mitsuharu Ishii, Masanori Ohkawa, Isao Iwaguchi, Hideo Miyazawa
  • Patent number: 7021545
    Abstract: In an optical bar-code reader, an optical scanner optically scans a bar code to obtain optical power of light reflected from white bars and black bars of the bar code, a differentiation unit calculates a differential of the optical power to obtain a differential waveform, a dividing unit divides the differential waveform into a positive waveform and a negative waveform, a bar-code correcting unit calculates correct widths of black bars in the bar code from the positive waveform and the negative waveform to create corrected bar-code data, and a converter converts the corrected bar-code data into character data that is an array of numerals and alphabets.
    Type: Grant
    Filed: January 26, 2004
    Date of Patent: April 4, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 7007847
    Abstract: A signal obtained by optically scanning a bar code is subjected to differentiation to obtain differential data. Peak-to-peak distances are calculated from the differential data. When a peak-to-peak ?Tx distance is y times of a basic width, frequency f(x,y) will be, f(x,y)=y/?Tx. A frequency map is prepared from the frequencies calculated. Transition routes in which one frequency each is selected from each of the peak-to-peak distances, are formed. A transition route for which an error in frequencies is the least is taken as the most suitable transition route. An average of the frequencies included in the transition route is taken as a frequency f0 of the basic width.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: March 7, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Patent number: 6978937
    Abstract: A method of reading information which makes it possible to suppress the size of hardware and a price thereof and to improve an S/N ratio of a reading signal and reading resolution, wherein even if depth of field for reading is enlarged or a concave/convex portion or a blurred portion is left on the reading face, reading precision can be improved. The method includes steps of acquiring from a medium 1, a signal containing binary digit information having a predetermined information length and a one-dimensional arrangement, extracting information concerning an elemental unit length of the information length of the binary digit information from the acquired signal, and reading a ratio of the binary digit information to the information length based on the extracted elemental unit length information.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: December 27, 2005
    Assignee: Fujitsu Limited
    Inventors: Isao Iwaguchi, Takashi Kaku, Hiroyasu Murata, Kozo Yamazaki, Masanori Ohkawa, Mitsuo Watanabe, Hideo Miyazawa
  • Patent number: 6976630
    Abstract: In an optical scanner, an optical scanner optically scans a bar code to obtain signal strength of light reflected from black bars and white bars of the bar code, an extracting unit extracts edge data, which includes a plurality of edges and the signal strength of which changes corresponding to a change from a black bar to a white bar and vice versa, an edge-emphasizing unit that emphasizes edge data of an edge that satisfies a predetermined condition, a ternary judgment unit that makes a ternary judgment of each edge based on the edge emphasized to obtain a ternarizing result, and a decoder that decodes bar-code characters from the ternarizing result.
    Type: Grant
    Filed: January 22, 2004
    Date of Patent: December 20, 2005
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa