Patents by Inventor Hideo Miyazawa

Hideo Miyazawa 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).

  • Differential transmission connector
    Patent number: 7025633
    Abstract: A connector for differential transmission is disclosed. The connector includes a housing made of an insulating material, the housing including a connector connection opening on its top face, multiple signal contact pairs each including first and second signal contact members, the signal contact members each including a signal terminal part, and multiple ground contact members each including ground terminal parts. The signal contact pairs and the ground contact members are disposed alternately in the housing so that the signal terminal parts of the first and second signal contact members of the signal contact pairs and the ground terminal parts of the ground contact members are provided on the side of the bottom face of the housing. The signal terminal parts of the first and second signal contact members extend in the same direction in each signal contact pair.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: April 11, 2006
    Assignee: Fujitsu Component Limited
    Inventors: Tadashi Kumamoto, Mitsuru Kobayashi, Junichi Akama, Hideo Miyazawa
  • Bar-code reader and method of reading bar-code
    Patent number: 7021546
    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: Grant
    Filed: January 5, 2004
    Date of Patent: April 4, 2006
    Assignees: Fujitsu Limited, Fujitsu Frontech Limited
    Inventors: Mitsuo Watanabe, Isao Iwaguchi, Hideo Miyazawa
  • Bar-code reader, method of reading a bar code and computer product
    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
  • Contact module, connector and method of producing said contact module
    Patent number: 7011556
    Abstract: The present invention provides a contact module, a connector, and a method of producing the contact module. The contact module includes a base and a plurality of contacts. Each of the contacts is bent at both ends in one direction. In a section view of each of the contacts, an insulating film, a barrier film, a plating base film, and a plating film are formed on a sheet in this order. The base that bridges the contacts has only the insulating film laminated on the sheet. The plating film has contact points at the bent parts, and a circuit pattern that is interposed between the contact points. The circuit pattern functions as a signal line.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: March 14, 2006
    Assignees: Fujitsu Component Limited, Fujitsu Limited
    Inventors: Hideo Miyazawa, Hajime Hasegawa, Hirohisa Ishikawa, Toshihiro Kusagaya
  • Bar-code reader and method of reading bar-code
    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
  • Cabled connector including cable guide attached detachably to connector cover
    Patent number: 7004783
    Abstract: A connector cover is formed by combining a first half cover and a second half cover. A cable guide is formed to have a pipe form by combining two cable half guides each having a semicircular cross section. The cable guide envelopes and guides a part of a cable leading out from the connector cover. The two cable half guides are coupled by being engaged with each other at one end, and are coupled with each other and attached detachably to the connector cover by being held between the first half cover and the second half cover at the other end.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: February 28, 2006
    Assignee: Fujitsu Component Limited
    Inventors: Tadashi Kumamoto, Mitsuru Kobayashi, Hideo Miyazawa
  • Connector
    Patent number: 6981898
    Abstract: A connector includes multiple pairs of signal contacts arranged in a housing, and facilitates the wiring design and the wiring operation for substrates. The two signal contacts in each of the multiple pairs are arranged at a distance in the longitudinal direction of the housing. With this arrangement, excellent coupling can be established between the two signal contacts, and signals can be balanced-transmitted without causing a phase difference. Also, the lengths of each pair of wires of a wiring substrate to be connected to the multiple pairs of signal contacts can be easily made uniform. Accordingly, there is no need to prepare excessive wiring areas, and the substrate wiring design and the wiring operation can be simplified.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: January 3, 2006
    Assignee: Fujitsu Component Limited
    Inventors: Junichi Akama, Masahiro Hamazaki, Tadashi Kumamoto, Manabu Shimizu, Hideo Miyazawa, Fumio Kurotori, Moriyuki Ueno
  • METHOD OF READING INFORMATION AND APPARATUS THEREFOR, METHOD OF ACQUIRING SIGNAL FOR USE WITH INFORMATION READING APPARATUS, METHOD OF PROCESSING BAND LIMITATION, METHOD OF EXTRACTING TIMING POINT AMPLITUDE AND METHOD OF PROCESSING SIGNAL THEREOF, READ SIGNAL PROCESSING UNIT, AND METHOD OF PROCESSING READ SIGNAL AND PROCESSING APPARATUS THEREOF
    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
  • Bar-code reader, method of reading a bar code, and computer product
    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
  • Balanced transmission cable connector
    Patent number: 6948965
    Abstract: A balanced transmission cable connector is disclosed. The balanced transmission cable connector includes a contact assembly, a shield cover assembly, an outer cover assembly, a lock mechanism, and a lock release mechanism. An end of a balanced transmission cable is connected to the balanced transmission cable connector. The lock mechanism is provided on the contact assembly and is located inside the shield cover assembly. The lock mechanism has hooks that protrude in the height direction of the balanced transmission cable connector. The lock release mechanism is formed by an operations portion that is part of the outer cover assembly.
    Type: Grant
    Filed: October 28, 2004
    Date of Patent: September 27, 2005
    Assignee: Fujitsu Component Limited
    Inventors: Tadashi Kumamoto, Mitsuru Kobayashi, Hideo Miyazawa
  • Balanced transmission cable connector
    Publication number: 20050181670
    Abstract: A balanced transmission cable connector is disclosed. The balanced transmission cable connector includes a contact assembly, a shield cover assembly, an outer cover assembly, a lock mechanism, and a lock release mechanism. An end of a balanced transmission cable is connected to the balanced transmission cable connector. The lock mechanism is provided on the contact assembly and is located inside the shield cover assembly. The lock mechanism has hooks that protrude in the height direction of the balanced transmission cable connector. The lock release mechanism is formed by an operations portion that is part of the outer cover assembly.
    Type: Application
    Filed: October 28, 2004
    Publication date: August 18, 2005
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Tadashi Kumamoto, Mitsuru Kobayashi, Hideo Miyazawa
  • Plug connector for differential transmission
    Patent number: 6923664
    Abstract: A plug connector for differential transmission is disclosed. The plug connector includes ground contact members and signal contact pairs that are arranged alternately. Each signal contact pair is composed of first and second signal contact members. The mounting terminal part and a portion of the base part on the mounting terminal part side of each ground contact member are thinner than the ground contact part of the ground contact member. The mounting terminal parts of the first and second signal contact members and the mounting terminal parts of the ground contact members are positioned in the same plane so that the mounting terminal parts of the first and second signal contact members of each signal contact pair are disposed between the mounting terminal parts of the ground contact members adjacent to the signal contact pair.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: August 2, 2005
    Assignee: Fujitsu Component Limited
    Inventors: Takeshi Ito, Mitsuru Kobayashi, Hideo Miyazawa
  • Barcode reader, method and program for reading barcode, and module-point extracting apparatus
    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
  • Synchronization method and apparatus
    Patent number: 6898256
    Abstract: In a synchronization method and apparatus in a data transmission using a transparent transmission line, a periodic amplitude modulation is applied, or a zero-point is inserted, as a synchronizing signal to a transmission signal point on a transmission side at a preceding stage of a transparent transmission line. Also, in case of a frame synchronization, a power value of a received signal is calculated on a reception side of the above-mentioned transparent transmission line and the synchronizing signal is vectorized using the power values whose phases are different from each other by 90 degrees on a time axis.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: May 24, 2005
    Assignee: Fujitsu Limited
    Inventors: Takashi Kaku, Takahiro Kurakata, Hideo Miyazawa
  • Differential transmission connector
    Patent number: 6887101
    Abstract: A connector for differential transmission is disclosed. The connector includes a connector housing, a connector main body attached thereto, and a photoelectric conversion module provided to the connector housing to be electrically connected to the connector main body. The connector main body includes a differential transmission electric connector part connectable to the connector of an apparatus. Ground contact members and signal contact pairs each including first and second signal contact members are arranged alternately in the connector main body. The photoelectric conversion module includes a photoelectric conversion part and an optical fiber cable connector part to which an optical fiber cable is connectable. The differential transmission electric connector part and the optical fiber cable connector part are provided to the opposite ends of the connector housing.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: May 3, 2005
    Assignee: Fujitsu Component Limited
    Inventors: Takeshi Ito, Mitsuru Kobayashi, Hideo Miyazawa, Noboru Shimizu
  • Automatic gain control circuit, data communication device and automatic gain control method
    Patent number: 6882684
    Abstract: An automatic gain control circuit includes a first portion which calculates a first error amount, and a second portion which calculates a second error amount. Both calculated error amount is sent to a determination module. Further, an integrator integrates an error amount, a difference between a power of an input signal and an average power of an eye pattern for example. The determination determines whether the integrated error amount exceeds a predetermined value or not, and output either of the first error amount and the second error amount based on the determination.
    Type: Grant
    Filed: January 10, 2001
    Date of Patent: April 19, 2005
    Assignee: Fujitsu Limited
    Inventors: Takashi Kaku, Hideo Miyazawa
  • Plastic ferrule
    Patent number: 6877910
    Abstract: A plastic ferrule including a centering section having a tubular body. The tubular body is provided with an outer-circumferential centering reference surface and a center axis of the centering reference surface. The centering section includes a resinous outer tube part having the outer-circumferential centering reference surface and provided, along the center axis, with a coated-fiber holding bore for securely accommodating a coated optical fiber and a fixing bore extending from the coated-fiber holding bore, the outer tube part forming a tubular wall with a generally uniform thickness as a whole. The centering section also includes an inner tube part fixed to the fixing bore of the outer tube part and provided along the center axis with an uncoated-fiber holding bore, communicating with the coated-fiber holding bore, for securely accommodating an uncoated optical fiber.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: April 12, 2005
    Assignee: Fujitsu Component Limited
    Inventors: Eietsu Takahashi, Kazuo Nomura, Susumu Yamamoto, Hiroshi Matsumiya, Osamu Daikuhara, Shinichiro Kawaguchi, Noboru Shimizu, Hideo Miyazawa, Koji Watanabe, Hirohiko Tsugane, Naoki Ikemori
  • Semiconductor integrated circuit having self-diagnosis test function and test method thereof
    Patent number: 6832348
    Abstract: An I/O cell (101) becomes an output state according to a burn-in test mode signal M in a burn-in test and the output of a port output signal setting register (106) is selected in an output signal selecting circuit (105). An instruction for periodically alternately setting “H” and “L” in the port output signal setting register (106) is written in test ROM (103). According to this circuit configuration, in burn-in, “H” and “L” are alternately output from the I/O cell (101) and appropriate stress can be applied to the I/O cell (101).
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: December 14, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Atsushi Kawabe, Hideo Miyazawa, Satoshi Hori
  • DIFFERENTIAL TRANSMISSION CONNECTOR
    Publication number: 20040242066
    Abstract: A connector for differential transmission is disclosed. The connector includes a connector housing, a connector main body attached thereto, and a photoelectric conversion module provided to the connector housing to be electrically connected to the connector main body. The connector main body includes a differential transmission electric connector part connectable to the connector of an apparatus. Ground contact members and signal contact pairs each including first and second signal contact members are arranged alternately in the connector main body. The photoelectric conversion module includes a photoelectric conversion part and an optical fiber cable connector part to which an optical fiber cable is connectable. The differential transmission electric connector part and the optical fiber cable connector part are provided to the opposite ends of the connector housing.
    Type: Application
    Filed: April 27, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Takeshi Ito, Mitsuru Kobayashi, Hideo Miyazawa, Noboru Shimizu
  • Differential transmission connector
    Publication number: 20040242072
    Abstract: A connector for differential transmission is disclosed. The connector includes a housing made of an insulating material, the housing including a connector connection opening on its top face, multiple signal contact pairs each including first and second signal contact members, the signal contact members each including a signal terminal part, and multiple ground contact members each including ground terminal parts. The signal contact pairs and the ground contact members are disposed alternately in the housing so that the signal terminal parts of the first and second signal contact members of the signal contact pairs and the ground terminal parts of the ground contact members are provided on the side of the bottom face of the housing. The signal terminal parts of the first and second signal contact members extend in the same direction in each signal contact pair.
    Type: Application
    Filed: April 27, 2004
    Publication date: December 2, 2004
    Applicant: FUJITSU COMPONENT LIMITED
    Inventors: Tadashi Kumamoto, Mitsuru Kobayashi, Junichi Akama, Hideo Miyazawa