Patents by Inventor Mitsuo Watanabe

Mitsuo Watanabe 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: 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
  • Publication number: 20050139676
    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: Application
    Filed: February 28, 2005
    Publication date: June 30, 2005
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Kozo Yamazaki, Masanori Ohkawa, Mitsuo Watanabe, Takashi Kaku
  • Publication number: 20050133370
    Abstract: This invention provides methods and devices for spatially separating at least first and second components in a sample which in one exemplary embodiment comprises introducing the first and second components into a first microfluidic channel of a microfluidic device in a carrier fluid comprising a spacer electrolyte solution and stacking the first and second components by isotachophoresis between a leading electrolyte solution and a trailing electrolyte solution, wherein the spacer electrolyte solution comprises ions which have an intermediate mobility in an electric field between the mobility of the ions present in the leading and trailing electrolyte solutions and wherein the spacer electrolyte solution comprises at least one of the following spacer ions MOPS, MES, Nonanoic acid, D-Glucuronic acid, Acetylsalicyclic acid, 4-Ethoxybenzoic acid, Glutaric acid, 3-Phenylpropionic acid, Phenoxyacetic acid, Cysteine, hippuric acid, p-hydroxyphenylacetic acid, isopropylmalonic acid, itaconic acid, citraconic acid, 3,
    Type: Application
    Filed: June 12, 2004
    Publication date: June 23, 2005
    Applicants: Caliper Life Sciences, Inc., Wako Pure Chemical Industries, Ltd.
    Inventors: Charles Park, Persefoni Kechagia, Michael Spaid, Morten Jensen, Irina Kazakova, Josh Molho, Tomohisa Kawabata, Mitsuo Watanabe
  • Publication number: 20050120854
    Abstract: A thin-film slicer is disclosed that comprises a base; a sample holder; a cutting blade; and a feeder, wherein the sample holder and the cutting blade are placed at predetermined angles with respect to the base; the sample holder sandwiches the sample surfaces of the thin film at a portion other than a portion to be cut; the cutting blade is provided movably in a straight line in a direction that forms the predetermined angle with respect to the direction of the sample surfaces of the thin film, and cuts the thin film held by the sample holder from a sample-surface side; and the feeder feeds the cutting blade in a straight line in the direction that forms the predetermined angle with respect to the sample surfaces of the thin film held by the sample holder.
    Type: Application
    Filed: December 1, 2004
    Publication date: June 9, 2005
    Applicant: Jasco Engineering Corporation
    Inventors: Mitsuo Watanabe, Fumiko Kaneuchi
  • Patent number: 6834493
    Abstract: Cavitation is reduced in a rotary pump while the pump performance is maintained by utilizing a low-temperature fluid source already present in the pump system. The fluid from the low-temperature fluid source receives heat from the fluid flowing to the pump, thereby lowering its temperature and the saturated vapor pressure, which increases the allowable margin for a decrease in fluid pressure and reduces the occurrence of cavitation. The pump system may be used for a liquid rocket engine. The fluid velocity of the fluid directed to the pump is low before releasing heat, so there is only a slight pressure loss at the pump. Accordingly, the temperature is lowered and the occurrence of cavitation is reduced within the pump.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: December 28, 2004
    Assignee: National Aerospace Laboratory of Japan
    Inventors: Tomoyuki Hashimoto, Mitsuo Watanabe, Takeshi Kanda, Satoshi Hasegawa, Kenji Kudo, Athuo Murakami, Kouichiro Tani
  • Patent number: 6827268
    Abstract: A still image of a moving object is restored from portions including the object in an image by using a movement distance of the object during an exposure time and the difference value between output values of adjacent pixels, the movement distance being calculated as a number of pixels. Therefore, especially in cases where a moving bar code is imaged, even if the image of the bar code is blurred as a result of the movement of the bar code during imaging, a still image of the bar code in which the outlines of the black portions and white portions of the bar code are clear can be obtained. Accordingly, bar code information can be read out from the imaged bar code.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 7, 2004
    Assignee: Fujitsu Limited
    Inventors: Mitsuharu Ishii, Toshitaka Aoki, Isao Iwaguchi, Hiroaki Kawai, Kozo Yamazaki, Mitsuo Watanabe
  • Publication number: 20040164160
    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: Application
    Filed: January 22, 2004
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164158
    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: Application
    Filed: December 31, 2003
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Hideo Miyazawa, Isao Iwaguchi, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164163
    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: Application
    Filed: December 9, 2003
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164161
    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: Application
    Filed: January 26, 2004
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164155
    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: Application
    Filed: January 7, 2004
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164162
    Abstract: In a bar-code generally number of modules corresponding to each character is seven. However, if the number of modules judged from the data obtained by reading a bar code is, for example, six, the character is demodulated using a demodulation-pattern table corresponding to six modules.
    Type: Application
    Filed: January 5, 2004
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Mitsuo WATANABE, Isao IWAGUCHI, Hideo MIYAZAWA
  • Publication number: 20040167747
    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: Application
    Filed: December 29, 2003
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040164156
    Abstract: Management information, which is information about hardware in or software installed in the bar-code reader, is stored in a storage unit is the bar-code reader. The management information may be acquired from an external unit or read from a bar code.
    Type: Application
    Filed: December 31, 2003
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa, Kozo Yamazaki, Masanori Ohkawa, Mitsuharu Ishii
  • Publication number: 20040164159
    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 &Dgr;Tx distance is y times of a basic width, frequency f(x,y) will be, f(x,y)=y/&Dgr;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: January 5, 2004
    Publication date: August 26, 2004
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Isao Iwaguchi, Hideo Miyazawa, Mitsuo Watanabe, Kozo Yamazaki, Masanori Ohkawa
  • Publication number: 20040136303
    Abstract: An optical disk drive for optimizing laser power to be used at the time of recording operation. In a DVD-R drive and a DVD-RW drive, a controller performs OPC to set recording power and records RMD serving as recording management data in an RMA serving as a recording management area. The RMD are verified. When the RMD can be read, the number of PI errors in the RMD is detected. If the number of PI errors is equal to or less than an allowable value, data are recorded in a data area at that recording power. If the number of PI errors exceeds the allowable value, OPC is again performed, to thereby reset the recording power.
    Type: Application
    Filed: December 22, 2003
    Publication date: July 15, 2004
    Applicant: TEAC Corporation
    Inventors: Mitsuo Watanabe, Naoto Takeda
  • Publication number: 20040129784
    Abstract: There is provided 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: Application
    Filed: July 21, 2003
    Publication date: July 8, 2004
    Applicant: Fujitsu Limited
    Inventors: Isao Iwaguchi, Takashi Kaku, Hiroyasu Murata, Kozo Yamazaki, Masanori Ohkawa, Mitsuo Watanabe, Hideo Miyazawa
  • Publication number: 20040084533
    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: October 29, 2003
    Publication date: May 6, 2004
    Applicants: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Kozo Yamazaki, Mitsuharu Ishii, Masanori Ohkawa, Isao Iwaguchi, Hideo Miyazawa