Patents by Inventor Naoyoshi Otsubo

Naoyoshi Otsubo 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).

  • Content reproduction system, information processing terminal, media server, secure device, and server secure device
    Patent number: 9866535
    Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103).
    Type: Grant
    Filed: August 25, 2015
    Date of Patent: January 9, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideki Matsushima, Teruto Hirota, Naoyoshi Otsubo, Koichi Morioka, Natsume Matsuzaki, Norio Sanada
  • CONTENT REPRODUCTION SYSTEM, INFORMATION PROCESSING TERMINAL, MEDIA SERVER, SECURE DEVICE, AND SERVER SECURE DEVICE
    Publication number: 20150372992
    Abstract: A content reproduction system includes an information processing terminal (102) and a secure device (103). The information processing terminal (102) receives a copyright protection application program (315) from an application distribution server (113). The copyright protection application program includes a first program having a first execution format executable in the information processing terminal (102) and a second program having a second execution format different from the first execution format and executable in the secure device (103). The second program is encrypted with a program key (515) held in the secure device (103). By extracting and executing the first program, the information processing terminal (102) extracts the second program and transmits the second program to the secure device (103).
    Type: Application
    Filed: August 25, 2015
    Publication date: December 24, 2015
    Inventors: Hideki MATSUSHIMA, Teruto HIROTA, Naoyoshi OTSUBO, Koichi MORIOKA, Natsume MATSUZAKI, Norio SANADA
  • Content reproduction system, information processing terminal, media server, secure device, and server secure device
    Patent number: 9152770
    Abstract: A content reproduction system includes an information processing terminal and a secure device. The information processing terminal receives a copyright protection application program from an application distribution server. The copyright protection application program includes a first program having a first execution format executable in the information processing terminal and a second program having a second execution format different from the first execution format and executable in the secure device. The second program is encrypted with a program key held in the secure device. By extracting and executing the first program, the information processing terminal extracts the second program and transmits the second program to the secure device. The secure device receives the second program from the information processing terminal, decrypts the second program using a program key stored in a key storing unit, and executes the second program.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: October 6, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideki Matsushima, Teruto Hirota, Naoyoshi Otsubo, Koichi Morioka, Natsume Matsuzaki, Norio Sanada
  • CONTENT REPRODUCTION SYSTEM, INFORMATION PROCESSING TERMINAL, MEDIA SERVER, SECURE DEVICE, AND SERVER SECURE DEVICE
    Publication number: 20130145477
    Abstract: A content reproduction system includes an information processing terminal and a secure device. The information processing terminal receives a copyright protection application program from an application distribution server. The copyright protection application program includes a first program having a first execution format executable in the information processing terminal and a second program having a second execution format different from the first execution format and executable in the secure device. The second program is encrypted with a program key held in the secure device. By extracting and executing the first program, the information processing terminal extracts the second program and transmits the second program to the secure device. The secure device receives the second program from the information processing terminal, decrypts the second program using a program key stored in a key storing unit, and executes the second program.
    Type: Application
    Filed: August 6, 2012
    Publication date: June 6, 2013
    Inventors: Hideki Matsushima, Teruto Hirota, Naoyoshi Otsubo, Koichi Morioka, Natsume Matsuzaki, Norio Sanada