Patents by Inventor Wataru Kuramochi

Wataru Kuramochi 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: 5051569
    Abstract: The present invention relates to a method for recording data on an optical data recording card. The present invention discloses practical data formats for solving the following problems: (1) the control of the operation for reading out unit readout arrays by means of a line sensor; (2) the establishment of synchronism with data pits in case of the readout operation, (3) the discrimination between the adjacent unit readout arrays; (4) countermeasure taken when readout errors occurs; and (5) efficient access to data.In order to solve the above-described problems, data pits are arranged in unit readout arrays; bars are defined for guiding the line sensor; and a format for indicating the center position of each unit readout array is prepared. Furthermore, special bars are also defined in order to correct the inclination of the line sensor. The data pits are arranged at a predetermined period and sync pits are provided to establish the synchronization with the pit period in case of the readout operation.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: September 24, 1991
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Yoshiaki Tsuruoka, Yorihiko Sakai, Wataru Kuramochi
  • Patent number: 5041356
    Abstract: An optical recording material comprising (I) a substrate, (II) a recording layer provided on said substrate, the recording layer consisting of light transmissive portions and light screening portions, and (III) a reflective metallic thin film layer provided on the recording layer; as well as a process therefor. The invention also includes an optical card comprising the optical recording material provided on a card substrate. In the cases of the optical recording material and the optical card, it is possible to readily carry out high density recording, the alternation of written informaton is difficult, and the written information can be read out on a basis of the difference in light reflectivity.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: August 20, 1991
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Mitsuru Takeda, Wataru Kuramochi
  • Patent number: 5008552
    Abstract: Data can be recorded onto an optical card (102; 200; 601; 800) on which a plurality of tracks are parallelly arranged and can be reproduced therefrom. The optical card is supported by card supporting means (101; 501). This card supporting means is reciprocated in a first direction by card drive means (109; 511). An optical head (103; 503; 603) is provided above the optical card to selectively provide access to tracks by a light beam. This optical head is reciprocated in a second direction perpendicular to the first direction by head drive means (108; 507). The reciprocating motion of the card supporting means is accelerated and decelerated when the optical head scans on guide sections (G) provided on both the sides of the optical card. Error correcting codes are added to data recorded onto the optical card. Thus, error correction is made by an error correction circuit (136). Motors of respective drive means are enclosed with vibration proof metal (321, 323) and vibration proof rubber (322).
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: April 16, 1991
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Wataru Kuramochi, Yoshiaki Tsuruoka, Norikazu Saitou, Akira Shibuya, Shuichi Yamashita
  • Patent number: 4970712
    Abstract: A format is provided with special error check pits in order to take countermeasures when readout errors occur. Furthermore, in order to take countermeasures when readout errors occur due to local contamination on the optical data recording card, the data are distributed and then recorded. In order to perform the efficient access to data, required data representing a predetermined address value are also recorded together with the general data. A method is also provided for forming pits by modulating the digital signal and an optical system as well as a signal processing system of a reading device used in connection with the optical data recording cards. The optical data recording cards on which are recorded the data by the method of the present invention can be used in various fields as recording media for storage of computer programs, images, musical data and various data bases.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: November 13, 1990
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Yoshiaki Tsuruoka, Yorihiko Sakai, Wataru Kuramochi
  • Patent number: 4816362
    Abstract: An optical recording material comprising (I) a substrate, (II) a recording layer provided on said substrate, the recording layer consisting of light transmissive portions and light screening portions, and (III) a reflective metallic thin film layer provided on the recording layer; as well as a process therefor. The invention also includes an optical card comprising the optical recording material provided on a card substrate. In the cases of the optical recording material and the optical card, it is possible to readily carry out high density recording, the alternation of written information is difficult, and the written information can be read out on a basis of the difference in light reflectivity.
    Type: Grant
    Filed: March 31, 1987
    Date of Patent: March 28, 1989
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Mitsuru Takeda, Wataru Kuramochi
  • Patent number: 4754128
    Abstract: An optical card comprising a card substrate and a light reflective layer provided on said card substrate, said light reflective layer comprising an optical reflective metallic thin film having a light information pattern formed therein is prepared by forming said optical information pattern by photoetching. According to this optical card, it is possible to readily carry out high density recording.
    Type: Grant
    Filed: February 18, 1986
    Date of Patent: June 28, 1988
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Mitsuru Takeda, Wataru Kuramochi
  • Patent number: 4673626
    Abstract: An optical recording material comprising (I) a substrate, (II) a recording layer provided on said substrate, the recording layer consisting of light transmissive portions and light screening portions, and (III) a reflective metallic thin film layer provided on the recording layer; as well as a process therefor. The invention also includes an optical card comprising the optical recording material provided on a card substrate. In the cases of the optical recording material and the optical card, it is possible to readily carry out high density recording, the alternation of written information is difficult, and the written information can be read out on a basis of the difference in light reflectivity.
    Type: Grant
    Filed: March 27, 1985
    Date of Patent: June 16, 1987
    Assignee: Dai Nippon Insatsu Kabushiki Kaisha
    Inventors: Mitsuru Takeda, Wataru Kuramochi