Patents by Inventor Hideto Kunihiro

Hideto Kunihiro 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: 6023552
    Abstract: A data recording system for recording in a CD-ROM or similar recording medium a data file containing data such as compressed audio and video data and an index file containing index data for searching the individual data of the data file. The data stored in the data file are recorded in a CD-ROM in three hierarchical stages, i.e., titles, scenes and shots or chapters, scenes and clips. The index file has a hierarchical format associated with that of the data file in order to manage the data of the data file in consecutive stages.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: February 8, 2000
    Assignees: NEC Corporation, NEC Home Electronics, Ltd.
    Inventor: Hideto Kunihiro
  • Patent number: 5802245
    Abstract: A data recording system for recording in a CD-ROM or similar recording medium a data file containing data such as compressed audio and video data and an index file containing index data for searching the individual data of the data file. The data stored in the data file are recorded in a CD-ROM in three hierarchical stages, i.e., titles, scenes and shots or chapters, scenes and clips. The index file has a hierarchical format associated with that of the data file in order to manage the data of the data file in consecutive stages.
    Type: Grant
    Filed: September 21, 1995
    Date of Patent: September 1, 1998
    Assignees: NEC Corporation, NEC Home Electronics, Ltd.
    Inventor: Hideto Kunihiro
  • Patent number: 5559608
    Abstract: A data recording system for recording in a CD-ROM or similar recording medium a data file containing data such as compressed audio and video data and an index file containing index data for searching the individual data of the data file. The data stored in the data file are recorded in a CD-ROM in three hierarchical stages, i.e., titles, scenes and shots or chapters, scenes and clips. The index file has a hierarchical format associated with that of the data file in order to manage the data of the data file in consecutive stages.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: September 24, 1996
    Assignees: Nec Corporation, Nec Home Electronics, Ltd.
    Inventor: Hideto Kunihiro
  • Patent number: 5245427
    Abstract: A motion image data compression coding apparatus and an image data compression coding method capable of smoothing compressed data among frames are disclosed. A data amount of compressed data is obtained by a hybrid coding of a combination of an orthogonal transform such as a discrete cosine transform, a quantization and a variable length coding of motion image data of one frame. A quantization step size is expressed by a product of a scaling factor f and quantization matrix factors q. The scaling factor f is determined from a code amount produced up to the preceding frame, a target code amount and an AC level of the transform factors of the present frame. Prior to the quantization and the variable length coding, a code amount actually resulted by the same coding is detected, and by considering the actual code amount, the scaling factor f for the last quantization is corrected.
    Type: Grant
    Filed: February 20, 1992
    Date of Patent: September 14, 1993
    Assignee: NEC Corporation
    Inventor: Hideto Kunihiro
  • Patent number: 4985782
    Abstract: In a reproduction system for use in reproducing a still image from a sequence of predictive error signals which is read out of a memory and which is preliminarily processed into a sequence of preliminary processed signals, an intermediate circuit interrupts the preliminary processed signals in response to an external command signal. In the intermediate circuit, the external command signal is resampled by a sequence of frame pulses in a resampling circuit into a resampled signal so as to close a gate circuit. No predictive error signal is sent to an adder circuit during absence of the gate circuit. An identical error signal is repeatedly produced as a sequence of reproduced signals to reproduce the still image.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: January 15, 1991
    Assignees: NEC Corp., NEC Home Electronics Ltd.
    Inventors: Toshio Koga, Junichi Ohki, Mutsumi Ohta, Hideto Kunihiro
  • Patent number: 4942476
    Abstract: In a recording system, a sequence of image signals obtained from a sequence of images are used to generate and record a sequence of recordable signals on a read only memory. Efficient coding of the received sequence of image signals is carried out through the use of a given parameter which is adaptively and dynamically changed, preferably manually, through a parameter controller acting as the interactive device. The image signals are repeatedly subjected to the efficient coding process. The process uses a sequence of predictive signals to produce coded signals. The predictive signals are displayed on a monitor display device to be monitored by an operator. The operator changes the attributes of the parameter until an optimum image is obtained. The optimum parameter is stored on a magnetic tape.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: July 17, 1990
    Assignees: NEC Corporation, NEC Home Electronics Ltd.
    Inventors: Toshio Koga, Junichi Ohki, Mutsumi Ohta, Hideto Kunihiro
  • Patent number: 4931879
    Abstract: In an image recording system for use in recording a sequence of coded signals on a recording medium, such as a CD-ROM in response to a sequence of image signals divisible into a succession of frames each of which is subdivided into a plurality of splits, the image signals are selectively subjected to interframe coding and intraframe coding in a coder to be coded into first and second error signals, respectively, under control of a coding control circuit. The intraframe coding may be carried out about a selected split at every frame, at every preselected period, or at predetermined positions of each scene. The second and the first error signals are rearranged into the coded signals by delaying the second error signal relative to the first error signal. Such a second error signal serves to reproduce an initial image on reproducing the coded signals and enables a reverse reproduction, a quick search, a high speed reproduction, and the like in a reproducing system.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: June 5, 1990
    Assignees: NEC Corp., NEC Home Electronics Ltd.
    Inventors: Toshio Koga, Junichi Ohki, Mutsumi Ohta, Hideto Kunihiro