Patents by Inventor Kuniyuki Kajita

Kuniyuki Kajita 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: 7152198
    Abstract: A coding/decoding technique capable of increasing the error correcting decoding performance and improving the communication quality. This technique divides, through code block segmentation prior to error correcting coding, transmission data with CRC-bit added into a predetermined number of code blocks so that the data length of each code block is an integer multiple of the data length of each transport block and ensures that CRC-bit exists at the end of each code block. Then, the technique performs error correcting coding on each code block after the division.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: December 19, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kuniyuki Kajita
  • Publication number: 20050219071
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “?1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Application
    Filed: May 23, 2005
    Publication date: October 6, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Patent number: 6944348
    Abstract: A coding/decoding technique capable of increasing the error correcting decoding performance and improving the communication quality. This technique divides, through code block segmentation prior to error correcting coding, transmission data with CRC-bit added into a predetermined number of code blocks so that the data length of each code block is an integer multiple of the data length of each transport block and ensures that CRC-bit exists at the end of each code block. Then, the technique performs error correcting coding on each code block after the division.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: September 13, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kuniyuki Kajita
  • Patent number: 6940428
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “?1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: September 6, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Patent number: 6922159
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “?1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Grant
    Filed: March 8, 2004
    Date of Patent: July 26, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Patent number: 6900320
    Abstract: A personal information control system that makes it easy to carry out a shift of personal information accompanying to a replacement of a portable telephone apparatus with a new one by carrying out control and maintenance of the personal information. The mobile station apparatus 100 comprises a user interface 110 that exchanges information with a user, a transmitting/receiving section 120 that carries out communication with a base station apparatus 200 via an antenna 150, a memory that stores personal information and its own user identification number and a control section 140 that controls the respective operations of the foregoing sections.
    Type: Grant
    Filed: July 24, 2001
    Date of Patent: May 31, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kuniyuki Kajita
  • Publication number: 20050002477
    Abstract: Candidate limiting section 104 outputs to correlation value calculating section 105 only the TFCI coding sequences corresponding to TFCI numbers that are actually used based on TFCI numbers that are included in the group of TFCI numbers notified from a layer which is upper than the physical layer, correlation value calculating section 105 calculates the correlation values between the coding sequences outputted from candidate limiting section 104 and the received TFCI and stores the results in correlation value memory 106, maximum value detecting section 107 notifies error correction decoding section 108 of the TFCI number corresponding to the maximum correlation value among the correlation values stored in correlation value memory 106, and error correction decoding section 108 performs an error correction decoding on the data stored in data memory 103 according to the transmission format specified based on the notified TFCI number.
    Type: Application
    Filed: July 29, 2004
    Publication date: January 6, 2005
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kuniyuki Kajita, Maho Takita
  • Patent number: 6813323
    Abstract: Candidate limiting section 104 outputs to correlation value calculating section 105 only the TFCI coding sequences corresponding to TFCI numbers that are actually used based on TFCI numbers that are included in the group of TFCI numbers notified from a layer which is upper than the physical layer, correlation value calculating section 105 calculates the correlation values between the coding sequences outputted from candidate limiting section 104 and the received TFCI and stores the results in correlation value memory 106, maximum value detecting section 107 notifies error correction decoding section 108 of the TFCI number corresponding to the maximum correlation value among the correlation values stored in correlation value memory 106, and error correction decoding section 108 performs an error correction decoding on the data stored in data memory 103 according to the transmission format specified based on the notified TFCI number.
    Type: Grant
    Filed: July 25, 2002
    Date of Patent: November 2, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kuniyuki Kajita, Maho Takita
  • Publication number: 20040187062
    Abstract: A coding/decoding technique capable of increasing the error correcting decoding performance and improving the communication quality. This technique divides, through code block segmentation prior to error correcting coding, transmission data with CRC-bit added into a predetermined number of code blocks so that the data length of each code block is an integer multiple of the data length of each transport block and ensures that CRC-bit exists at the end of each code block. Then, the technique performs error correcting coding on each code block after the division.
    Type: Application
    Filed: April 1, 2004
    Publication date: September 23, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventor: Kuniyuki Kajita
  • Publication number: 20040174941
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “−1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Application
    Filed: March 8, 2004
    Publication date: September 9, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Publication number: 20040170236
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “−1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Application
    Filed: March 8, 2004
    Publication date: September 2, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Patent number: 6734810
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “−1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: May 11, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Patent number: 6603409
    Abstract: In a puncturing section 102, input memory 201 temporarily stores data inputted to the puncturing section 102, a controller 202 distinguishes data to be added, a switch 203 selects data to be added in accordance with control of the controller 202, an adder 204 adds data (namely, data subjected to repetition by a transmitter side) selected by the switch 203, and output memory 205 temporarily stores data outputted from the puncturing section 102.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: August 5, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kuniyuki Kajita
  • Publication number: 20030039324
    Abstract: Coding section 205 recodes decoded data stored in decoded data storage section 204, data conversion section 206 converts data “0” and “1” output from coding section 205 to “1” and “−1” respectively, sum-of-product calculation section 207 multiplies the data output from data conversion section 206 by the demodulated data (soft decision value) stored in demodulated data storage section 201 and then calculates the sum of the products for 1 TTI and stores the sum-of-product result for each data rate, data rate decision section 208 decides the data rate corresponding to a maximum value of the sum-of-product results as the data rate of the demodulated data. This makes it possible to improve the accuracy of data rate decision and reduce decoding errors of a received signal.
    Type: Application
    Filed: September 10, 2002
    Publication date: February 27, 2003
    Inventors: Kuniyuki Kajita, Takashi Toda, Hidetoshi Suzuki, Masatoshi Watanabe
  • Publication number: 20030012309
    Abstract: Candidate limiting section 104 outputs to correlation value calculating section 105 only the TFCI coding sequences corresponding to TFCI numbers that are actually used based on TFCI numbers that are included in the group of TFCI numbers notified from a layer which is upper than the physical layer, correlation value calculating section 105 calculates the correlation values between the coding sequences outputted from candidate limiting section 104 and the received TFCI and stores the results in correlation value memory 106, maximum value detecting section 107 notifies error correction decoding section 108 of the TFCI number corresponding to the maximum correlation value among the correlation values stored in correlation value memory 106, and error correction decoding section 108 performs an error correction decoding on the data stored in data memory 103 according to the transmission format specified based on the notified TFCI number.
    Type: Application
    Filed: July 25, 2002
    Publication date: January 16, 2003
    Inventors: Kuniyuki Kajita, Maho Takita
  • Publication number: 20020160733
    Abstract: A convergence coefficient determination section 104 compares an average value calculated by an average value calculator 103 with a preset threshold value, and determines a convergence coefficient. A gain coefficient determination section 106 determines a control gain based on the aforementioned convergence coefficient and the aforementioned average value. A gain/voltage converter 107 converts the gain coefficient to a voltage to obtain a voltage control value. A GCA 101 amplifies a received signal in accordance with the voltage control value after it has undergone digital conversion.
    Type: Application
    Filed: November 26, 2001
    Publication date: October 31, 2002
    Inventor: Kuniyuki Kajita
  • Publication number: 20020158780
    Abstract: In a puncturing section 102, input memory 201 temporarily stores data inputted to the puncturing section 102, a controller 202 distinguishes data to be added, a switch 203 selects data to be added in accordance with control of the controller 202, an adder 204 adds data (namely, data subjected to repetition by a transmitter side) selected by the switch 203, and output memory 205 temporarily stores data outputted from the puncturing section 102.
    Type: Application
    Filed: October 26, 2001
    Publication date: October 31, 2002
    Inventor: Kuniyuki Kajita
  • Publication number: 20020155824
    Abstract: A personal information control system that makes it easy to carry out a shift of personal information accompanying to a replacement of a portable telephone apparatus with a new one by carrying out control and maintenance of the personal information. The mobile station apparatus 100 comprises a user interface 110 that exchanges information with a user, a transmitting/receiving section 120 that carries out communication with a base station apparatus 200 via an antenna 150, a memory that stores personal information and its own user identification number and a control section 140 that controls the respective operations of the foregoing sections.
    Type: Application
    Filed: June 6, 2002
    Publication date: October 24, 2002
    Inventor: Kuniyuki Kajita