Patents by Inventor Junya Endo

Junya Endo 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: 6819529
    Abstract: A head drum device of the present invention prevents a magnetic tape (2) from clinging to the head drum device (3) due to electrostatic charge by using a carbon-containing synthetic resin as the material of an upper drum (33) in order to reduce the manufacturing cost for the upper drum. Also, setting the outside diameter of the upper drum (33) smaller than that of an intermediate drum (32) eliminates the need for a high-level of manufacturing precision in the manufacture of the upper drum (33). Thus, it is possible to reduce the manufacturing cost for the upper drum (33).
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: November 16, 2004
    Assignee: Sony Corporation
    Inventors: Tadashi Ooami, Junya Endo, Masanori Maehara, Masahiro Kiko, Tamami Mishiro, Kentaro Shingai
  • Publication number: 20030002224
    Abstract: A head drum device of the present invention prevents a magnetic tape (2) from clinging to the head drum device (3) due to electrostatic charge by using a carbon-containing synthetic resin as the material of an upper drum (33) in order to reduce the manufacturing cost for the upper drum. Also, setting the outside diameter of the upper drum (33) smaller than that of an intermediate drum (32) eliminates the need for a high-level of manufacturing precision in the manufacture of the upper drum (33). Thus, it is possible to reduce the manufacturing cost for the upper drum (33).
    Type: Application
    Filed: July 22, 2002
    Publication date: January 2, 2003
    Inventors: Tadashi Ooami, Junya Endo, Masanori Maehara, Masahiro Kiko, Tamani Mishiro, Kentaro Shingai
  • Patent number: 6452744
    Abstract: A magnetic record/playback apparatus for continuously recording at least two tracks of data conforming to a digital recording format applied to a first magnetic tape having a first tape width onto one track formed on a second magnetic tape having a second tape width larger than the first tape width, and for reproducing the data from the second magnetic tape. This apparatus includes a fixed drum and a rotating drum adapted to be rotated relative to the fixed drum. The rotating drum has a record/playback head for recording and/or reproducing the data with respect to the second magnetic tape and an erase head for erasing the data recorded on the second magnetic tape. A plurality of grooves extending in a direction of rotation of the rotating drum are formed on the outer circumference of the rotating drum, and each of the grooves has a width of 0.21 mm±0.02 mm.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: September 17, 2002
    Assignee: Sony Corporation
    Inventors: Yoshio Tamaru, Masahiro Kiko, Junya Endo, Mutsuko Ochiai
  • Patent number: 4491886
    Abstract: A cassette-type tape recording and/or reproducing apparatus having a tape guide drum with a rotary head moved in a circular path substantially coinciding with the drum circumference, and a holder spaced from the guide drum and locating a tape cassette in an operative position at which a plane passing through the tape in the cassette is inclined in respect to the plane of rotation of the rotary head; is provided with a tape loading apparatus having a tape guiding element guided for movement in a path extending from a first position for engaging the tape in the operatively positioned cassette, to a second position spaced substantially from the first position and at which the engaged tape is wrapped about the circumference of the guide drum, with at least a portion of the path leading to the second position of the tape guiding element being inclined relative to the plane of rotation of the head so that the tape wrapped on the circumference of the guide drum is arranged substantially helically in respect to the l
    Type: Grant
    Filed: March 1, 1982
    Date of Patent: January 1, 1985
    Assignee: Sony Corporation
    Inventors: Akiro Saito, Naoki Kamaya, Junya Endo, Seisuke Ohba, Akira Kumano, Yoshinori Ida, Hideo Horie