Patents by Inventor Shigeru Hirahata

Shigeru Hirahata 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).

  • Publication number: 20100005414
    Abstract: The composition mentioned hereinafter has been chosen to enable switching over the window targeted for manipulation by manipulating an arrow key, in case a subwindow which can be manipulated with a free cursor is present inside a main window which can be manipulated with a block cursor. In a state in which subwindow is focused during manipulation of main window, there is a switchover, by detection of lapse of a fixed time T, to manipulation of subwindow. In addition, in a state in which the free cursor is present in a border portion of subwindow during manipulation of subwindow, there is a switchover to main window as a result of detection of any one of: manipulation of key in the subwindow outward direction, pressing of key for a fixed time in the subwindow outward direction, and lapse of a fixed time T.
    Type: Application
    Filed: September 18, 2009
    Publication date: January 7, 2010
    Applicant: HITACHI,LTD
    Inventors: Mikine ISHIGURO, Shigeru Hirahata, Hiroyuki Koreeda, Masaru Nanki
  • Publication number: 20050193350
    Abstract: The composition mentioned hereinafter has been chosen to enable switching over the window targeted for manipulation by manipulating an arrow key, in case a subwindow which can be manipulated with a free cursor is present inside a main window which can be manipulated with a block cursor. In a state in which subwindow is focused during manipulation of main window, there is a switchover, by detection of lapse of a fixed time T, to manipulation of subwindow. In addition, in a state in which the free cursor is present in a border portion of subwindow during manipulation of subwindow, there is a switchover to main window as a result of detection of any one of: manipulation of key in the subwindow outward direction, pressing of key for a fixed time in the subwindow outward direction, and lapse of a fixed time T.
    Type: Application
    Filed: February 24, 2005
    Publication date: September 1, 2005
    Inventors: Mikine Ishiguro, Shigeru Hirahata, Hiroyuki Koreeda, Masaru Nanki
  • Patent number: 6898578
    Abstract: A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: May 24, 2005
    Assignee: Hitachi, Ltd.
    Inventors: Manabu Sasamoto, Takaharu Noguchi, Makoto Aikawa, Shigeru Hirahata
  • Publication number: 20050050314
    Abstract: For providing an electronic apparatus, into which a semiconductor memory, being unavailable random accessing thereon, is installed as a memory for storing control programs therein, as well as, a start-up method for a system thereof, an electronic apparatus has a controller for executing control on each portion of the apparatus. The controller comprises a CPU 201 and a non-volatile memory 203, being electrically erasable and writable data thereof and having a function of reading out data locating at specific addresses, continuously, such as, a flash memory of “NAND” type, representatively, wherein continuous addresses are generated responding to a reset signal, so as to read out a boot program stored in a portion of the non-volatile memory, continuously, when executing the start-up of the system, and also the boot program is extended on a volatile memory 202, being accessible at random to data thereof.
    Type: Application
    Filed: July 16, 2004
    Publication date: March 3, 2005
    Inventors: Fumio Ohkita, Yasushi Naito, Shigeru Hirahata, Satoshi Takahashi, Tomohiko Mizuguchi, Satoshi Iimuro
  • Patent number: 6683956
    Abstract: An encrypting conversion apparatus, a decrypting conversion apparatus, a cryptographic communication system and an electronic toll collection apparatus are provided which are capable of changing algorithms of cryptographic conversion to hide the algorithm in use from a third party so that the apparatuses and system are resistant against a cryptographic attack from the third party and can operate at high speed. In the cryptographic communication system.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: January 27, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Aikawa, Shigeru Hirahata, Kazuo Takaragi, Yoshimichi Kudo
  • Patent number: 6606385
    Abstract: Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means for selecting fixed cyclic shift processing means. The selecting sequence determined by the cyclic shift processing means is determined on the basis of data for determining the shift number selecting sequence.
    Type: Grant
    Filed: August 4, 1998
    Date of Patent: August 12, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Makoto Aikawa, Kazuo Takaragi, Hiroyuki Koreeda, Manabu Sasamoto, Hiroo Okamoto, Takaharu Noguchi, Soichi Furuya, Shigeru Hirahata
  • Publication number: 20030110134
    Abstract: A digital information recording apparatus to record digital information to protect copyright of digital information that includes at least first digital information and first copy control information. The digital information recording apparatus records the digital information based upon the first copy control information, which denotes one of: a copy inhibition prohibiting copying of said first digital information; a limited copy permission authorizing a predetermined number of times of copying of said first digital information; and an unlimited copy permission authorizing unlimited copying of said first digital information.
    Type: Application
    Filed: August 2, 2002
    Publication date: June 12, 2003
    Inventors: Manabu Sasamoto, Takaharu Noguchi, Makoto Aikawa, Shigeru Hirahata
  • Publication number: 20030026430
    Abstract: An encrypting conversion apparatus, a decrypting conversion apparatus, a cryptographic communication system and an electronic toll collection apparatus are provided which are capable of changing algorithms of cryptographic conversion to hide the algorithm in use from a third party so that the apparatuses and system are resistant against a cryptographic attack from the third party and can operate at high speed. In the cryptographic communication system.
    Type: Application
    Filed: September 26, 2002
    Publication date: February 6, 2003
    Inventors: Makoto Aikawa, Shigeru Hirahata, Kazuo Takaragi, Yoshimichi Kudo
  • Publication number: 20010014154
    Abstract: Encrypting/decrypting conversion method and apparatus capable of controlling dynamically cyclic shift independent of data to undergo encrypting/decrypting conversion includes two or more different fixed circulating shift processing means for shifting cyclically the data by a fixed bit number leftward or rightward, a cyclic shift processing selecting means for selecting fixed cyclic shift processing means. The selecting sequence determined by the cyclic shift processing means is determined on the basis of data for determining the shift number selecting sequence.
    Type: Application
    Filed: March 19, 2001
    Publication date: August 16, 2001
    Applicant: Hitachi, Ltd.
    Inventors: Makoto Aikawa, Kazuo Takaragi, Hiroyuki Koreeda, Manabu Sasamoto, Hiroo Okamoto, Takaharu Noguchi, Soichi Furuya, Shigeru Hirahata
  • Patent number: 5974218
    Abstract: A method for presentation of information of a recorded television program for allowing user to seize easily and quickly content/composition thereof, and an easily manipulable interface therefor. Picture signal of a television program currently being recorded by a VTR or the like is converted into a frame-based picture signal. Frames indicating inter-shot transitions are detected and stored as shot-representative pictures for thereby generating a digest picture file composed of a set of the shot-representative pictures substantially simultaneously with recording operation of the VTR. In a digest picture display, the shot-representative pictures are displayed in a temporally sequential order in which they were generated in such a form that a predetermined number of shot-representative pictures are displayed in each of predetermined time zones in a uniform array, for facilitating comprehension of the contents of the television picture as recorded.
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: October 26, 1999
    Assignee: Hitachi, Ltd.
    Inventors: Akio Nagasaka, Takafumi Miyatake, Yoshikazu Amano, Shigeru Hirahata
  • Patent number: 5534934
    Abstract: To provide an image which is matched with an aspect ratio of a screen of a display unit by compressing and enlarging the whole of the image to a desired size. A video signal is sequentially written into a field memory in response to a write clock from an input terminal. A clock generating circuit supplies the field memory with a read clock having a frequency which is about 4/3 times as high as that of the write clock. A vertical enlargement control circuit reads a video signal from the field memory with a line period corresponding to a magnification factor and inhibits writing to a one-line memory with the same period to provide a line delayed output for an output signal from the field memory. A vertical interpolating circuit generates a scanning line signal by an interpolation operation in accordance with a control signal from the vertical enlargement control circuit.
    Type: Grant
    Filed: June 16, 1994
    Date of Patent: July 9, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Katsumata, Shigeru Hirahata, Toshinori Murata, Haruki Takata, Shinobu Torikoshi, Takanori Eda, Kouichi Ishibashi
  • Patent number: 5353065
    Abstract: Disclosed is a wide picture plane/standard picture plane television signal receiving apparatus which comprises: a first signal processing circuit for doubling the scanning speed of an input standard television signal; an aspect ratio conversion circuit for converting a display aspect ratio of the double scanning speed television signal from the first signal processing circuit into a wide aspect ratio; a second signal processing circuit for processing an input EDTV television signal into a double scanning speed television signal with a wide aspect ratio; a first signal selection circuit for selecting one of the respective output signals from the aspect ratio conversion circuit and the second signal processing circuit; a wide aspect display device for displaying the selected output signal from the first signal selection circuit; an EDTV signal detection circuit for detecting the processing effected on the EDTV signal in the second signal processing circuit to thereby switch the contact of the first signal selec
    Type: Grant
    Filed: June 16, 1992
    Date of Patent: October 4, 1994
    Assignee: Hitachi, Ltd.
    Inventors: Kenji Katsumata, Shigeru Hirahata, Masato Sugiyama, Isao Nakagawa
  • Patent number: 5343238
    Abstract: A wide-screen television receiver capable of converting a TV signal of a non-aspect ratio into a signal of a wide aspect ratio which can be displayed on a wide screen of the wide aspect ratio and previously visually informing the user of what part of the image of the non-aspect ratio TV signal is converted in its aspect ratio and displayed on the wide screen. The receiver includes the interpolation scan speed conversion circuit, the mode setting circuit, the aspect ratio converting circuit, the wide cursor adding circuit and the wide display. The interpolation scan speed conversion circuit makes a series of processes such as Y/C separation and scan line interpolation for the input video signal supplied via the input terminal. The aspect ratio converting circuit compresses the video signal from the interpolation scan speed conversion circuit in the horizontal direction by use of a memory. The magnification processing circuit is provided after the aspect ratio converting circuit.
    Type: Grant
    Filed: May 22, 1992
    Date of Patent: August 30, 1994
    Assignees: Hitachi, Ltd., Hitachi Video Information System, Inc.
    Inventors: Haruki Takata, Kenji Katsumata, Shigeru Hirahata, Mituo Konno, Kouichi Ishibashi, Sunao Suzuki
  • Patent number: 5276515
    Abstract: A video signal processing circuit is provided to display an image of a standard television signal on a display unit with a 6:9 aspect ratio by enlarging an image of a video signal in the horizontal and vertical directions by a magnification factor which depends on the feature of the standard television signal. The processing circuit includes a first memory circuit which reads out the stored video signal in response to a read clock different from the write clock and generated by a stable frequency source so that the image of the video signal is expanded in the vertical direction, a second memory circuit which implements time-base compression for the output of the first memory circuit and thereafter expands the signal, a spatial filter which implements filtering for the output of the second memory circuit, an enlargement control circuit which control the above-mentioned circuits, and a synchronizing processing circuit.
    Type: Grant
    Filed: September 8, 1992
    Date of Patent: January 4, 1994
    Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.
    Inventors: Kenji Katsumata, Shigeru Hirahata, Haruki Takata, Mituo Konno, Kouichi Ishibashi, Kazuhiro Kaizaki, Takaaki Matono, Atushi Haratani
  • Patent number: 5249037
    Abstract: In a motion-adaptive television signal processor, a field as a reference for a moving picture signal includes a signal delayed by a frame memory or a field memory. A non-standard signal is beforehand processed so as to separate Y and C signals, and the signal thus processed is input to a motion-adaptive processor to thereby reduce a deviation in center of gravity between a still picture signal and a moving picture signal on the timebase to thereby suppress unnatural motion of the picture.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: September 28, 1993
    Assignees: Hitachi, Ltd., Mitsubishi Electric Corporation
    Inventors: Masato Sugiyama, Isao Nakagawa, Shigeru Hirahata, Toshinori Murata, Ikuya Arai, Kazuhiro Kaizaki, Tadashi Kasezawa, Noriyuki Yamaguchi, Takuzi Kurashita, Masaharu Yao
  • Patent number: 5243421
    Abstract: A wide television receiver which converts a video input signal having an aspect ratio 4:3 or 16:9 into a display format permitting selecting of display with horizontal compression, without horizontal compression, with vertical magnification, or without vertical magnification to present the display on a wide display having an aspect ratio 16:9.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: September 7, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Tatsuo Nagata, Shigeru Hirahata, Kenji Katsumata, Shinobu Torikoshi, Mitsuo Konno
  • Patent number: 5218436
    Abstract: A television for receiving two or more types of television signals capable of displaying an image irrespective of the types of a received television signal and a display for displaying an image, by controlling, in accordance with the receiving television signal and the display, a processor and aspect ratio converter for demodulating the received television signal.
    Type: Grant
    Filed: January 23, 1991
    Date of Patent: June 8, 1993
    Assignee: Hitachi, Ltd.
    Inventors: Masato Sugiyama, Shigeru Hirahata, Tohru Suzaki, Isao Nakagawa, Kenji Katsumata
  • Patent number: 5181110
    Abstract: A video signal processing circuit capable of enlarging and displaying a picture and adapted for use in an apparatus in which a desired picture is selected, and a video signal representative of the desired picture under interlaced scanning is received, stored in a memory and processed to provide an enlarged video signal, includes a real signal/interpolated signal preparation circuit for preparing, from the stored video signal, new scanning lines for an image to be enlarged, and a memory processing circuit having switching control function to store an output signal of the real signal/interpolated signal preparation circuit in a memory, read the video signal out of the memory at a period different from a period at which the output signal is stored in the memory, and delay a read-out signal by one or more fields so that an enlarged signal is delivered.
    Type: Grant
    Filed: December 27, 1990
    Date of Patent: January 19, 1993
    Assignees: Hitachi, Ltd., Hitachi Video Engineering Inc.
    Inventors: Kenji Katsumata, Shigeru Hirahata, Masato Sugiyama, Takaaki Matono, Kazuo Ishikura, Sunao Suzuki, Kazuhiro Kaizaki
  • Patent number: 5132793
    Abstract: There is disclosed a compatible television receiver capable of receiving and reproducing both the standard system television signal and the high definition television signal and capable of confining the degradation of picture quality of the high definition television signal to the minimum, in which the received standard system television signal and high definition television signal are respectively converted to non-interlace signals, and scanning is selectively performed with either of non-interlace video signals to display images.
    Type: Grant
    Filed: March 9, 1990
    Date of Patent: July 21, 1992
    Assignees: Hitachi, Ltd., Nippon Hoso Kyokai
    Inventors: Shigeru Hirahata, Shinobu Torikoshi, Toshiyuki Sakamoto, Takumi Okamura, Noboru Kojima, Tetsuo Mitsuhashi, Isao Kondo, Yuichi Ninomiya, Koichi Yamaguchi, Toshiro Ohmura
  • Patent number: 5029006
    Abstract: A video signal processing circuit capable of enlarging and displaying a picture and adapted for use in an apparatus in which a desired picture is selected, and a video signal representative of the desired picture under interlaced scanning is received, stored in a memory and processed to provide an enlarged video signal, comprises includes a real signal/interpolated signal preparation circuit for preparing, from the stored video signal, new scanning lines for an image to be enlarged, and a memory processing circuit having switching control function to store an output signal of the real signal/interpolated signal preparation circuit in a memory, read the video signal out of the memory at a period different from a period at which the output signal is stored in the memory, and delay a read-out signal by one or more fields so that an enlarged signal is delivered.
    Type: Grant
    Filed: April 25, 1989
    Date of Patent: July 2, 1991
    Assignees: Hitachi, Ltd., Hitachi Video Engineering, Inc.
    Inventors: Kenji Katsumata, Shigeru Hirahata, Masato Sugiyama, Takaaki Matono, Kazuo Ishikura, Sunao Suzuki, Kazuhiro Kaizaki