Patents by Inventor Takeharu Muramatsu

Takeharu Muramatsu 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: 7766239
    Abstract: A code-reading apparatus determines the type of data in recorded code data and carries out appropriate processes depending on the determined type of data. The code-reading apparatus comprises an imaging unit 7 for photographing encoded data. The encoded data comprises a header portion and a body portion, the body portion including encoded ring tone data, the header portion including a data identifier D indicating the type of data in the body portion. The apparatus further comprises a data identifier unit 19a for identifying the type of the encoded data photographed by the imaging unit 7 based on the data identifier D, and control units 13 and 19 for reading the encoded data depending on the identified data type and for reproducing the ring tone data that has been read.
    Type: Grant
    Filed: July 15, 2003
    Date of Patent: August 3, 2010
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takeharu Muramatsu, Hirokazu Ishikawa
  • Patent number: 7562820
    Abstract: After binarization is performed, the adjacency relationship of connection fields is analyzed from a labeled input image on the basis of the characteristics of the structure of a barcode, thereby extracting a barcode field. A unit width, which is to be used as the module width of the barcode, is determined in accordance with the widths of the connection fields of black pixels in the extracted barcode field. Based on the arrangement of the magnification of the unit width, the barcode is recognized by collating a prescribed barcode pattern with the input width pattern. In the aforementioned collation, the influence of noises, for example, can be reduced by setting an allowable range for the collation of the widths in each magnification, and the barcode can be recognized in an improved precision even in a low-resolution image photographed using a small image sensor built in a mobile terminal.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: July 21, 2009
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeharu Muramatsu
  • Publication number: 20080259175
    Abstract: It is possible to correct camera shaking even in an imaging device such as a camera-equipped mobile telephone having no sufficient ability for rapidly acquiring a plurality of images and a limited memory capacity. There is suggested an imaging device capable of correcting camera shaking by utilizing a small image such as a preview image and a target image to be obtained when a user of the imaging device clicks a shutter. The preview image has an appropriate exposure but has a high possibility that camera shaking has occurred. The target image is captured by insufficient exposure because of rapid shutter speed but the camera shaking is reduced. The image information on the target image is corrected by the image information on the preview image so as to obtain an image of reduced camera shaking and appropriate exposure.
    Type: Application
    Filed: July 18, 2006
    Publication date: October 23, 2008
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takeharu Muramatsu, Takayoshi Nose, Yoshio Hagino, Shinji Tanaka
  • Patent number: 7424976
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone with a camera has a camera for inputting information of an image of interest, a small light, which emits light through the operation of ON/OFF button while reading a bar code, an LCD display part for displaying information, and a control part including a CPU for controlling the whole device. The control part switches photography modes depending on the existence of objects such as natural images or bar codes. The control part recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: September 16, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeharu Muramatsu
  • Patent number: 7410100
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone with a camera has a camera for inputting information of an image of interest, a small light, which emits light through the operation of ON/OFF button while reading a bar code, an LCD display part for displaying information, and a control part including a CPU for controlling the whole device. The control part switches photography modes depending on the existence of objects such as natural images or bar codes. The control part recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Grant
    Filed: July 29, 2005
    Date of Patent: August 12, 2008
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeharu Muramatsu
  • Patent number: 7090136
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone with a camera has a camera for inputting information of an image of interest, a small light, which emits light through the operation of ON/OFF button while reading a bar code, an LCD display part for displaying information, and a control part including a CPU for controlling the whole device. The control part switches photography modes depending on the existence of objects such as natural images or bar codes. The control part recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: August 15, 2006
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeharu Muramatsu
  • Publication number: 20060113390
    Abstract: After binarization is performed, the adjacency relationship of connection fields is analyzed from a labeled input image on the basis of the characteristics of the structure of a barcode, thereby extracting a barcode field. A unit width, which is to be used as the module width of the barcode, is determined in accordance with the widths of the connection fields of black pixels in the extracted barcode field. Based on the arrangement of the magnification of the unit width, the barcode is recognized by collating a prescribed barcode pattern with the input width pattern. In the aforementioned collation, the influence of noises, for example, can be reduced by setting an allowable range for the collation of the widths in each magnification, and the barcode can be recognized in an improved precision even in a low-resolution image photographed using a small image sensor built in a mobile terminal.
    Type: Application
    Filed: December 17, 2002
    Publication date: June 1, 2006
    Inventor: Takeharu Muramatsu
  • Publication number: 20050258251
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone with a camera has a camera for inputting information of an image of interest, a small light, which emits light through the operation of ON/OFF button while reading a bar code, an LCD display part for displaying information, and a control part including a CPU for controlling the whole device. The control part switches photography modes depending on the existence of objects such as natural images or bar codes. The control part recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Application
    Filed: July 29, 2005
    Publication date: November 24, 2005
    Inventor: Takeharu Muramatsu
  • Publication number: 20050258253
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone with a camera has a camera for inputting information of an image of interest, a small light, which emits light through the operation of ON/OFF button while reading a bar code, an LCD display part for displaying information, and a control part including a CPU for controlling the whole device. The control part switches photography modes depending on the existence of objects such as natural images or bar codes. The control part recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Application
    Filed: July 29, 2005
    Publication date: November 24, 2005
    Inventor: Takeharu Muramatsu
  • Patent number: 6863218
    Abstract: When a two-dimensional code having data cells (referred to as DC) comprising two-dimensional data, positioning finder patterns (referred to as FP) and an alignment pattern (referred to as AP) is input, the positions of FP are detected by evaluating the proximity from patterns in three horizontal, vertical and inclined directions. The position of AP is detected by conducting the template matching after the rotation correction of part of the input image. The version of the code is determined by calculation of the number of cells from the widths and positions of FP. Coordinate conversion expressions for converting the positions of DC into their coordinate positions based upon the positions of FP and AP and the version are determined and DC are cut out. The array of the cut out DC is decoded for reading the two-dimensional code.
    Type: Grant
    Filed: July 18, 2003
    Date of Patent: March 8, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Takeharu Muramatsu
  • Publication number: 20040020989
    Abstract: When a two-dimensional code having data cells (referred to as DC) comprising two-dimensional data, positioning finder patterns (referred to as FP) and an alignment pattern (referred to as AP) is input, the positions of FP are detected by evaluating the proximity from patterns in three horizontal, vertical and inclined directions. The position of AP is detected by conducting the template matching after the rotation correction of part of the input image. The version of the code is determined by calculation of the number of cells from the widths and positions of FP. Coordinate conversion expressions for converting the positions of DC into their coordinate positions based upon the positions of FP and AP and the version are determined and DC are cut out. The array of the cut out DC is decoded for reading the two-dimensional code.
    Type: Application
    Filed: July 18, 2003
    Publication date: February 5, 2004
    Inventor: Takeharu Muramatsu
  • Publication number: 20040016814
    Abstract: A portable terminal device and a program for reading information, which can read a code correctly with simple operations, and a recording medium having the program recorded thereon. A portable telephone 10 with a camera has a camera 12 for inputting information of an image of interest, a small light 13, which emits light through the operation of ON/OFF button 21 while reading a bar code, an LCD display part 15 for displaying information, and a control part 31 including a CPU for controlling the whole device. The control part 31 switches photography modes depending on the existence of objects such as natural images or bar codes. The control part 31 recognizes a bar code when the device switches to a mode for bar code photography. Then, the device notifies a user of the results of the recognition and then performs a predetermined process based on the content of the recognition.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 29, 2004
    Inventor: Takeharu Muramatsu
  • Publication number: 20040014490
    Abstract: A code-reading apparatus determines the type of data in recorded code data and carries out appropriate processes depending on the determined type of data. The code-reading apparatus comprises an imaging unit 7 for photographing encoded data. The encoded data comprises a header portion and a body portion, the body portion including encoded ring tone data, the header portion including a data identifier D indicating the type of data in the body portion. The apparatus further comprises a data identifier unit 19a for identifying the type of the encoded data photographed by the imaging unit 7 based on the data identifier D, and control units 13 and 19 for reading the encoded data depending on the identified data type and for reproducing the ring tone data that has been read.
    Type: Application
    Filed: July 15, 2003
    Publication date: January 22, 2004
    Inventors: Takeharu Muramatsu, Hirokazu Ishikawa