中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.021 seconds)

    Data delivery method and data delivery system
    1.
    发明专利
    Data delivery method and data delivery system 未知

    公开(公告)号：AU9748401A

    公开(公告)日：2002-07-04

    申请号：AU9748401

    申请日：2001-12-27

    Applicant: SONY CORP

    Inventor： KAMIYA SHIGEKI ,  YAMASHITA MASAMI

    IPC: G06F21/00 ,  G06F21/10 ,  G06F21/16 ,  G06F21/62 ,  G11B20/00 ,  H04L9/00 ,  H04L9/08 ,  H04N5/913 ,  H04N7/16 ,  H04N7/167 ,  H04N7/173 ,  H04N21/2347 ,  H04N21/254 ,  H04N21/4405 ,  H04N21/6334 ,  H04N21/835

    Abstract: A digital data delivery method for use in delivering digital data from an upstream system to a downstream system, said upstream system providing multipoint delivery of encrypted digital data to specific destinations, and said downstream system decrypting the delivered digital data, said method comprising the steps of: encrypting digital data by said upstream system using an encryption key; generating a plurality of pieces of key information on the basis of said encryption key, respective pieces of said key information being specific to each of said specific destinations; delivering said respective pieces of key information to each of said specific destinations over a plurality of delivery routes which differ from routes for delivering said digital data and which are further different from each other; delivering the encrypted digital data; restoring said encryption key by said downstream system using said respective pieces of key information delivered over said plurality of delivery routes; and using the restored encryption key to decrypt the encrypted digital data.

    4.
    发明专利
    未知

    公开(公告)号：DE60115188D1

    公开(公告)日：2005-12-29

    申请号：DE60115188

    申请日：2001-12-24

    Applicant: SONY CORP

    Inventor： KAMIYA SHIGEKI ,  YAMASHITA MASAMI

    IPC: G06F21/00 ,  G06F21/10 ,  G06F21/16 ,  G06F21/62 ,  G11B20/00 ,  H04L9/00 ,  H04L9/08 ,  H04N5/913 ,  H04N7/16 ,  H04N7/167 ,  H04N7/173 ,  H04N21/2347 ,  H04N21/254 ,  H04N21/4405 ,  H04N21/6334 ,  H04N21/835

    Abstract: A digital data delivery method for use in delivering digital data from an upstream system to a downstream system, said upstream system providing multipoint delivery of encrypted digital data to specific destinations, and said downstream system decrypting the delivered digital data, said method comprising the steps of: encrypting digital data by said upstream system using an encryption key; generating a plurality of pieces of key information on the basis of said encryption key, respective pieces of said key information being specific to each of said specific destinations; delivering said respective pieces of key information to each of said specific destinations over a plurality of delivery routes which differ from routes for delivering said digital data and which are further different from each other; delivering the encrypted digital data; restoring said encryption key by said downstream system using said respective pieces of key information delivered over said plurality of delivery routes; and using the restored encryption key to decrypt the encrypted digital data.

    5.
    发明专利
    未知

    公开(公告)号：DE60115188T2

    公开(公告)日：2006-08-10

    申请号：DE60115188

    申请日：2001-12-24

    Applicant: SONY CORP

    Inventor： KAMIYA SHIGEKI ,  YAMASHITA MASAMI

    IPC: H04L9/08 ,  G06F21/00 ,  G06F21/10 ,  G06F21/16 ,  G06F21/62 ,  G11B20/00 ,  H04L9/00 ,  H04N5/913 ,  H04N7/16 ,  H04N7/167 ,  H04N7/173 ,  H04N21/2347 ,  H04N21/254 ,  H04N21/4405 ,  H04N21/6334 ,  H04N21/835

    Abstract: A digital data delivery method for use in delivering digital data from an upstream system to a downstream system, said upstream system providing multipoint delivery of encrypted digital data to specific destinations, and said downstream system decrypting the delivered digital data, said method comprising the steps of: encrypting digital data by said upstream system using an encryption key; generating a plurality of pieces of key information on the basis of said encryption key, respective pieces of said key information being specific to each of said specific destinations; delivering said respective pieces of key information to each of said specific destinations over a plurality of delivery routes which differ from routes for delivering said digital data and which are further different from each other; delivering the encrypted digital data; restoring said encryption key by said downstream system using said respective pieces of key information delivered over said plurality of delivery routes; and using the restored encryption key to decrypt the encrypted digital data.

    DATA DELIVERY METHOD AND DATA DELIVERY SYSTEM
    8.
    发明专利
    DATA DELIVERY METHOD AND DATA DELIVERY SYSTEM 未知

    公开(公告)号：CA2366161A1

    公开(公告)日：2002-06-28

    申请号：CA2366161

    申请日：2001-12-21

    Applicant: SONY CORP

    Inventor： KAMIYA SHIGEKI ,  YAMASHITA MASAMI

    IPC: G06F21/00 ,  G06F21/10 ,  G06F21/16 ,  G06F21/62 ,  H04L9/00 ,  H04L9/08 ,  H04L29/06 ,  H04N7/16 ,  H04N7/167 ,  H04N7/173 ,  H04N21/266 ,  H04N21/436 ,  H04N21/4408 ,  H04N21/63 ,  H04L9/14

    Abstract: A data delivery system highly resistant to misappropriation of data. A plurality of pieces of key information are generated on the basis of an encryption key specific to each digital data item to be delivered. The multiple pieces of key information ar e delivered over routes which differ from the routes used to deliver the digital data and whi ch further differ from each other. Physically different media or transmission over a network a t different times are used to transmit the different sets of key information separately. A downstream system includes a decryption server that uses the recovered encryption key to decry pt the delivered digital data. If the digital data is successfully decrypted, scramble and descramble keys are locally generated, with the scramble key being used to scramble the decrypte d digital data. The scrambled digital data and the descramble key are supplied to an output device which uses the descramble key to descramble the digital data and output the descrambled data in a predetermined format.

    ACOUSTIC DIAPHRAGM
    9.
    发明专利
    ACOUSTIC DIAPHRAGM 失效

    公开(公告)号：JPS63189098A

    公开(公告)日：1988-08-04

    申请号：JP2149087

    申请日：1987-01-31

    Applicant: SONY CORP ,  MITSUI PETROCHEMICAL IND

    Inventor： URYU MASARU ,  KAMIYA SHIGEKI ,  NISHI MIO ,  YAGI KAZUO ,  NAKAMURA SHIN

    IPC: H04R7/02

    Abstract: PURPOSE:To enlarge the reproducing frequency zone of a diaphragm by forming the diaphragm with a ultrastretching fiber made of ultra-high polymer polyethylene. CONSTITUTION:The diaphragm such as a cone style or a planar style is formed by shaping a substance which is made by arranging the ultra-stretching fiber 1 made of ultra-high polymer polyethylene in the same direction and making them in the sheet state with a resin bonding agent or a substance made by forming the above-mentioned fiber 1 to a cloth, adding it the resin bonding agent and making it in the sheet state. The used ultra-high polymer polyethylene fiber is made of ethylene or made by polymerizing the ethylene and a small quantity of alpha-olfine. Therefore the molecular chain of polyethylene is highly oriented and a high elasticity factor and high tensile strength are added by it's ultra-stretching.

Patent Agency Ranking