Patents by Inventor Yoshiki Negoro

Yoshiki Negoro 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).

  • Multi-channel tone generation apparatus with multiple CPU's executing programs in parallel
    Patent number: 5691493
    Abstract: A main CPU and a sub CPU take share of executing a tone generating process to generate multiple tone signals on a real-time basis without using an exclusive tone generator. The main CPU and sub CPU are formed on a one-chip LSI, thus facilitating realization of a compact electronic musical instrument. According to another structure, the main CPU executes tone generation while the sub CPU performs an effect process, thereby permitting a one-chip LSI to generate an effect-added musical tone.
    Type: Grant
    Filed: January 7, 1993
    Date of Patent: November 25, 1997
    Assignee: Casio Computer Co., Ltd.
    Inventors: Ryuji Usami, Kosuke Shiba, Koichiro Daigo, Kazuo Ogura, Jun Hosoda, Teruo Jinbo, Takashi Akutsu, Yoshiki Negoro, Yoshito Yamaguchi, Hajime Manabe
  • Apparatus for executing respective portions of a process by main and sub CPUS
    Patent number: 5584034
    Abstract: A main CPU and a sub CPU take share of executing a tone generating process to generate multiple tone signals on a real-time basis without using an exclusive tone generator. The main CPU and sub CPU are formed on a one-chip LSI, thus facilitating realization of a compact electronic musical instrument. According to another structure, the main CPU executes tone generation while the sub CPU performs an effect process, thereby permitting a one-chip LSI to generate an effect-added musical tone.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 10, 1996
    Assignee: Casio Computer Co., Ltd.
    Inventors: Ryuji Usami, Kosuke Shiba, Koichiro Daigo, Kazuo Ogura, Jun Hosoda, Teruo Jinbo, Takashi Akutsu, Yoshiki Negoro, Yoshito Yamaguchi, Hajime Manabe
  • Automatic performance apparatus with operated rotation means for tempo control
    Patent number: 5350882
    Abstract: An automatic performance apparatus which easily changes the tempo and direction of automatic performance of a musical instrument, for example, to a rhythm of a rap music such that a disc jockey operates a scratch disc. Clock frequency SQCK of sequence counter 202 is changed in accordance with the speed and quantity of rotation of disc 102 and ball 1101 rotated with user's fingers, so that the timing of reading event data and event time data out of sequencer memory 206 is controlled and the tempo of the automatic performance is changed. When the user changes the rotational direction of disc 102, counter 202 performs a decrementing operation in accordance with a rotational direction signal output from rotational direction detector 110, thereby giving a reverse automatic performance.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: September 27, 1994
    Assignee: Casio Computer Co., Ltd.
    Inventors: Satoru Koguchi, Yoshiki Negoro
  • Digital information processing apparatus with multiple CPUs
    Patent number: 5200564
    Abstract: A main CPU and a sub CPU take share of executing a tone generating process to generate multiple tone signals on a real-time basis without using an exclusive tone generator. The main CPU and sub CPU are formed on a one-chip LSI, thus facilitating realization of a compact electronic musical instrument. According to another structure, the main CPU executes tone generation while the sub CPU performs an effect process, thereby permitting a one-chip LSI to generate an effect-added musical tone.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: April 6, 1993
    Assignee: Casio Computer Co., Ltd.
    Inventors: Ryuji Usami, Kosuke Shiba, Koichiro Daigo, Kazuo Ogura, Jun Hosoda, Teruo Jinbo, Takashi Akutsu, Yoshiki Negoro, Yoshito Yamaguchi, Hajime Manabe