Patents by Inventor Keiji Yuzawa

Keiji Yuzawa 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: 5886691
    Abstract: An interactive display apparatus transmits voting information to a vote receiving center. Prior to voting, all voting items are displayed. A mark or a button is also displayed for each voting item and used for selecting one of a plurality of voting items. After one of the voting items is chosen, only the mark assigned to the selected voting item is displayed, erasing the marks for the other unselected voting items. In this way, the user is capable of recognizing that voting has been completed with ease from a voting screen.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: March 23, 1999
    Assignee: Sony Corporation
    Inventors: Miki Furuya, Yukiko Ohkura, Tetsuya Kohno, Keiji Yuzawa, Yuriko Kishitaka, Kuriko Takeshima
  • Patent number: 5670902
    Abstract: A satellite broadcast receiving system in which, when each receiver transmits a control pulse to a change-over divider via a signal cable, the change-over divider selects a desired broadcast signal in response to the control pulse, which is led to its output terminal, then transmitted to each receiver via the signal cable.
    Type: Grant
    Filed: July 19, 1996
    Date of Patent: September 23, 1997
    Assignee: Sony Corporation
    Inventors: Yutaka Nakagawa, Tadashi Kajiwara, Keiji Fukuzawa, Keiji Yuzawa
  • Patent number: 5565805
    Abstract: A satellite broadcast receiving system is disclosed, in which when each receiver transmits a control-pulse to a change-over divider via a signal cable, the change-over divider selects a desired broadcast signal in response to the control pulse, which is led to its output terminal, then transmitted to each receiver via the signal cable.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: October 15, 1996
    Assignee: Sony Corporation
    Inventors: Yutaka Nakagawa, Tadashi Kajiwara, Keiji Fukuzawa, Keiji Yuzawa
  • Patent number: 5301352
    Abstract: A satellite broadcast receiving system in which, when each receiver transmits a control pulse to a change-over divider via a signal cable, the change-over divider selects a desired broadcast signal in response to the control pulse, which is led to its output terminal, then transmitted to each receiver via the signal cable.
    Type: Grant
    Filed: June 26, 1992
    Date of Patent: April 5, 1994
    Assignee: Sony Corporation
    Inventors: Yutaka Nakagawa, Tadashi Kajiwara, Keiji Fukuzawa, Keiji Yuzawa
  • Patent number: 4843289
    Abstract: Digitally controllable ICs or function blocks in an electronic apparatus are connected through control bus lines, and a switch device is provided for disconnecting one of the digitally controllable ICs or function blocks from the control bus so that the control bus is not disabled when that one IC is turned off or is not occupied when the IC is operating in its internal processing mode. Therefore, communication between the remaining ICs can be maintained through the control bus.
    Type: Grant
    Filed: February 23, 1988
    Date of Patent: June 27, 1989
    Assignee: Sony Corp.
    Inventors: Takao Mogi, Keiji Yuzawa, Yoshinori Komiya, Masayuki Suematsu, Fujio Tagami
  • Patent number: 4633751
    Abstract: An automatic performance apparatus includes input circuitry for serially inputting musical sound information of a predetermined melody and musical sound information to be imparted to the melody, in accordance with progressions of the melody and a chord. A storage device serially stores the musical sound information inputted, and readout circuitry successively reads out the musical sound information stored in the storage device. Accordingly, the musical sounds based on the read out musical sound information are reproduced, and a melody and a chord are played simultaneously.
    Type: Grant
    Filed: April 15, 1985
    Date of Patent: January 6, 1987
    Assignee: Casio Computer Co., Ltd.
    Inventors: Hideshi Fukaya, Toshifumi Hoshii, Keiji Yuzawa
  • Patent number: 4624171
    Abstract: Data for a plurality of musical pieces is preset in a ROM pack and also on a tape recorder. Musical piece data read out from the ROM pack or tape recorder is supplied from a control section to melody generators, a chord generator, a bass generator and a rhythm generator. Melody data, chord data, and rhythm data obtained from these generators are coupled through an amplifier to a loudspeaker.
    Type: Grant
    Filed: January 23, 1986
    Date of Patent: November 25, 1986
    Assignee: Casio Computer Co., Ltd.
    Inventors: Keiji Yuzawa, Naoaki Matsumoto, Takehiko Kayahara, Naofumi Tateishi, Makoto Fukuda
  • Patent number: 4539882
    Abstract: A plurality of tone data indicative of the pitch and duration of a series of tones forming the melody of a number are stored in a performance memory by operating a key input section. Accompaniment chord data can be automatically obtained from an automatic chord generating circuit according to the tone data stored in the performance memory in which the accompaniment chord data thus obtained are stored together with melody data.
    Type: Grant
    Filed: December 21, 1982
    Date of Patent: September 10, 1985
    Assignee: Casio Computer Co., Ltd.
    Inventor: Keiji Yuzawa
  • Patent number: RE33607
    Abstract: Data for a plurality of musical pieces is preset in a ROM pack and also on a tape recorder. Musical piece data read out from the ROM pack or tape recorder is supplied from a control section to melody generators, a chord generator, a bass generator and a rhythm generator. Melody data, chord data, and rhythm data obtained from these generators are coupled through an amplifier to a loudspeaker.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: June 11, 1991
    Assignee: Casio Computer Co. Ltd.
    Inventors: Keiji Yuzawa, Naoaki Matsumoto, Takehiko Kayahara, Naofumi Tateishi, Makoto Fukuda