Patents by Inventor Yoshitaka Mitui

Yoshitaka Mitui 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: 6937553
    Abstract: A recording apparatus for recording a duplicate of a product onto a recording medium, the product being a copyrighted digital product having a copy attribute embedded as a watermark thereon and the recording apparatus including (a) an acquiring unit for acquiring the copy attribute embedded on the product, (b) a changing unit for changing the acquired copy attribute into a copy attribute showing no more copy when the acquired copy attribute shows one generation copy, (c) a reading unit for reading from the recording medium at least a part of medium ID information recorded on the recording medium in an unalterable state, and (d) a recording unit for recording onto the recording medium the duplicate having both the copy attribute showing no more copy and the read medium ID information embedded as a watermark thereon.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: August 30, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yoshitaka Mitui, Hideshi Ishihara
  • Patent number: 6618396
    Abstract: A data transmitting device connected to a prescribed network includes a coding device for receiving plural kinds of coded data, and coupling these coded data in first data units to generate a first coded stream. A divider divides the first coded stream into second data units of a prescribed data size to generate divided pack data corresponding to divided packs as the second units. A packet generating device adds header information to respective divided pack data to generate packet data corresponding to packets as data transmission units; and a transmitter outputs the respective packet data toward the network as a second coded stream which has a data structure different from that of the first coded stream.
    Type: Grant
    Filed: July 28, 1998
    Date of Patent: September 9, 2003
    Inventors: Satoshi Kondo, Akiyoshi Maeda, Hiroyuki Uenaka, Hiromu Kitaura, Hidetoshi Takeda, Yoshitaka Mitui
  • Patent number: 5850382
    Abstract: An optical disk is provided which includes a rewritable first recording area and a read-only second recording area. The first recording area includes groove tracks and land tracks divided into first sectors. Each first sector has a header region with identification data and a data region for recording user data. The second recording area includes tracks formed with physical bit rows, the tracks being divided into second sectors. Each second sector includes a header region and a data region having read-only data recorded as the bit rows. The header regions in the first sectors include pits the width of groove tracks and wobbled from a center line of the groove track. The header regions in the second sectors include pits having a width smaller than the groove tracks and formed along the center line of a track.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: December 15, 1998
    Assignee: Matsushita Electrical Industrial Co., Ltd.
    Inventors: Kenji Koishi, Shunji Ohara, Takashi Ishida, Isao Satoh, Yoshinari Takemura, Toyoji Gushima, Hironori Deguchi, Yoshitaka Mitui