Patents by Inventor Hiroto Yamauchi

Hiroto Yamauchi 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: 7231130
    Abstract: A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.
    Type: Grant
    Filed: February 21, 2002
    Date of Patent: June 12, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Ohno, Motoyoshi Sasaki, Hisashi Ohta, Yoshiyuki Azuma, Hiroto Yamauchi, Katsuhiko Abe, Mayumi Ueyama
  • Publication number: 20020094192
    Abstract: A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.
    Type: Application
    Filed: February 21, 2002
    Publication date: July 18, 2002
    Inventors: Shoji Ohno, Motoyoshi Sasaki, Hisashi Ohta, Yoshiyuki Azuma, Hiroto Yamauchi, Katsuhiko Abe, Mayumi Ueyama
  • Patent number: 6389217
    Abstract: A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.
    Type: Grant
    Filed: December 8, 1999
    Date of Patent: May 14, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Ohno, Motoyoshi Sasaki, Hisashi Ohta, Yoshiyuki Azuma, Hiroto Yamauchi, Katsuhiko Abe, Mayumi Ueyama
  • Patent number: 6038366
    Abstract: A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: March 14, 2000
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Ohno, Motoyoshi Sasaki, Hisashi Ohta, Yoshiyuki Azuma, Hiroto Yamauchi, Katsuhiko Abe, Mayumi Ueyama
  • Patent number: 5761371
    Abstract: A magnetic recording/reproducing apparatus having a capability of allowing contents of records on a magnetic tape to be discriminatively identified and a capability for displaying closed caption includes a tape map memory for storing contents recorded on a tape and a tape map controller. As a manual input facility, a tape map button, a caption button, a play-back button, a stop button and others are provided. Upon loading of a tape undergone recording(s), the tape map button is pushed to display on a monitor screen tape map information concerning the contents of program(s) recorded on the loaded tape, temporal duration(s) of the program(s), and history of play-back of the tape.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: June 2, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Shoji Ohno, Motoyoshi Sasaki, Hisashi Ohta, Yoshiyuki Azuma, Hiroto Yamauchi, Katsuhiko Abe, Mayumi Ueyama
  • Patent number: 5231479
    Abstract: A color picture signal processing circuit, a filter circuit and a luminance/carrier chrominance signal separation circuit implemented by employing the filter circuit. The circuit processing signal includes an adaptive-type (C) comb line filter through which the luminance signal is caused to pass. The output of the filter undergoes amplitude limitation in a limiter circuit, the output of which is subtracted from the original luminance signal. The carrier chrominance signal is added to the luminance signal to obtain a composite picture signal.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: July 27, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Hitoaki Owashi, Kooji Minabe, Katsuyuki Watanabe, Koichi Ono, Kenji Ichige, Hiroto Yamauchi
  • Patent number: 5148329
    Abstract: A magnetic recording/reproducing circuit system which comprises an amplitude control circuit and wherein a video recording signal and voice recording signal are supplied to a magnetic head to be written as superimposed on surface and deep layers of a magnetic recording medium in a record mode and to be reproduced from the recording medium in a reproduction mode. In the record mode, the amplitude control circuit detects an ambient temperature and controls a current value indicative of the video recording signal to be optimum for the detected temperature. As a result, in the reproduction mode, a reproduction video signal can be substantially stabilized regardless of a variation in the ambient temperature.
    Type: Grant
    Filed: March 7, 1991
    Date of Patent: September 15, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Hiroto Yamauchi, Tomishige Yatsugi
  • Patent number: 5005184
    Abstract: A waveform equalization method whereby a transversal filter having 5 or more tapes is included, and a difference signal output, which is obtained when an isolated impulse response waveform of a digital modulated signal is inputted to the above described filter and the output of the filter is inputted to an adder, is allowed to have intersymbol interference at .+-.T/2 with respect to the central axis time and has zero outputs at .+-.nT/2 (where n.gtoreq.2 and n is an integer).
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: April 2, 1991
    Assignees: Hitachi, Ltd., Hitachi Denshi Kabushiki Kaisha, Hitachi Video Engineering, Inc.
    Inventors: Tetsuya Amano, Seiichi Mita, Morishi Izumita, Nobukazu Doi, Mamoru Kaneko, Hiroto Yamauchi, Susumu Kasai
  • Patent number: 4868853
    Abstract: A demodulation circuit for demodulating a modulated digital including a unit for detecting a specific pattern contained in a series of data before modulation, a unit for judging the phase relation between the specific pattern and a clock pulse used for demodulation, a unit for performing a counting operation on the basis of the result of said judgment, and a unit for controlling the phase of said clock pulse for demodulation on the basis of the count.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: September 19, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Morishi Izumita, Seiichi Mita, Nobukazu Doi, Masuo Umemoto, Hiroto Yamauchi, Shigeaki Fujino, Nobuo Murata
  • Patent number: 4827489
    Abstract: A device for decoding coded digital signals for every symbol consisting of a plurality of binary signals comprises first circuit for generating a first reliability for every binary signal; hard decided from the received or reproduced signal, in the symbol and second circuit for generating a second reliability for every symbol consisting of n binary signals on the basis of the first reliability, whereby decoding processing e.g. soft decision decoding is effected for every signal, depending on the second reliability.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: May 2, 1989
    Assignees: Hitachi, Ltd., Hitachi Video Engineering, Incorporated
    Inventors: Nobukazu Doi, Hideki Imai, Morishi Izumita, Seiichi Mita, Akira Saito, Hiroto Yamauchi, Mamoru Kaneko, Tetsuya Amano