Patents by Inventor Masachika Yamazaki

Masachika Yamazaki 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: 5258586
    Abstract: An elevator control system for controlling movement of cages up and down in accordance with the situation of waiting persons in landing places or passengers in the cages detected by image pickup devices and other detecting devices includes first and second image processors, the image processing level of the second image processor being not lower than that of the first image processor. The system further includes an elevator controller for controlling movement of the cages up and down, the elevator controller including a device for applying the result of image processing performed by the first image processor to the control of the cages, and a device for applying the result of image processing performed by the second image processor to the control of the cages when the image processing is carried out based on the result of image processing performed by the first image processor and other information pertaining to passengers and waiting persons detected by the other detecting devices.
    Type: Grant
    Filed: March 20, 1990
    Date of Patent: November 2, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masato Suzuki, Masachika Yamazaki, Hiromi Inaba, Kiyoshi Nakamura, Yoshio Sakai, Naofumi Nakata, Chikara Komatsu, Syoji Kasai, Atsuya Fujino
  • Patent number: 5182776
    Abstract: An image of an elevator hall or an inside of elevator car is acquired by photographing apparatus, and the number of waiting passenger is detected by comparing the above-mentioned image with a background image when no passenger is present at the elevator hall. Second image processing apparatus with high precision is prepared by the same image information as that of first image processing apparatus, teacher information derived therefrom is compared with an output from the first image processing apparatus. If the teacher information is not coincident with the output from the first image processing means, parameters required for performing the image process by the first image processing appartus, for instance, constants, threshold values and weight coefficients employed in an image processing algorithm are adjusted.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: January 26, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masato Suzuki, Hiromi Inaba, Hiroshi Takenaga, Masachika Yamazaki, Naoto Oonuma, Kiyoshi Nakamura, Yoshio Sakai, Kenji Yoneda, Naofumi Nakata, Syoji Kasai
  • Patent number: 4989694
    Abstract: The invention relates to call registration wherein of a plurality of elevators an elevator which a user (passenger) wants to ride is called to the elevator hall of the user. A display is provided at an elevator hall for users. When a user depresses a hall calling button, a group supervisory controller determines and selects a suitable elevator, and causes the condition of the elevator to be displayed on the display in the form of sentences or the like. If the user is satisfied with the selected elevator, the hall calling button is not actuated again. If the user is dissatisfied with the selected elevator, the hall calling button is depressed again so that the controller selects another elevator for service to the user.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: February 5, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Takaaki Ueshima, Kenji Yoneda, Naobumi Nakata, Toshimitsu Tobita, Soshiro Kuzunuki, Yuzo Morita, Atsuya Fujino, Masato Suzuki, Masachika Yamazaki
  • Patent number: 4872532
    Abstract: In elevator equipment in which an elevator controller is connected by a common transmission line to an elevator cage and a plurality of apparatus installed at elevator stops on respective floors, signals are transmitted from the elevator controller to the elevator cage and the plurality of apparatus of elevator stops on respective floors. Information transmitted between the elevator controller and the cage as well as each apparatus at elevator stop on each floor is sorted into information which is different for each apparatus on each floor and the cage (unique information) and information which is the same for the plurality of apparatus at elevator stops on respective floors and the cage (common information), and the unique information is transmitted during a first period and the common information is transmitted during a second period, thereby reducing time required for transmission of information during one cycle.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: October 10, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Toshimitsu Tobita, Hiromi Inaba, Masachika Yamazaki, Masato Suzuki, Yuzo Morita, Toshiki Kajiyama, Kiyoshi Nakamura, Kenji Yoneda