Patents by Inventor Akihiro Tozaki

Akihiro Tozaki 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: 6006004
    Abstract: An information recording apparatus (SS1) is provided with: a signal process device (72) for applying a predetermined signal process to record information (R), which is to be recorded onto an information record medium (1: DVD) and is inputted externally, to output processed record information (Sr), and for dividing control information (Si), which corresponds to the record information and are inputted externally, into search control information(Sdsi, DSI), which is information to search a record position of the record information to be reproduced at a time of reproducing the record information, and reproduction display control information (Spci, PCI), which is information to control a reproduced display of the record information at the time of reproducing the record information, to output the search control information and the reproduction display control information; a multiplex device (75, 76) for multiplexing the processed record information, the search control information and the reproduction display contro
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: December 21, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Yoshiaki Moriyama, Ryuichiro Yoshimura, Takao Sawabe, Junichi Yoshio, Akihiro Tozaki, Kaoru Yamamoto
  • Patent number: 5966352
    Abstract: An information recording medium includes a plurality of first information pieces each of which is reproduced successively in time by a reproducing apparatus; a plurality of second information pieces each of which is successively positioned on the information recording medium, one or more of the second information piece constituting the first information piece; a plurality of third information pieces each of which is individually reproducible and is a unit for jump reproduction by the reproducing apparatus, one or more of the third information piece constituting the second information pieces; at least one related information piece included in the third information piece and relating to a reproduction order and a reproduction method of the second information pieces; at least one reproduction control information piece referred to by the reproducing apparatus and relating to a reproduction order and a reproduction method of the first information pieces.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: October 12, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Takao Sawabe, Ryuichiro Yoshimura, Junichi Yoshio, Akihiro Tozaki, Yoshiaki Moriyama, Kaoru Yamamoto
  • Patent number: 5960152
    Abstract: An information record medium (1: DVD) has a record track (1a) to be reproduced by an information reproducing apparatus (S2). The information reproducing apparatus is provided with a read device (80) and reproduces audio information by a predetermined audio frame unit while relatively moving the read device along the record track recorded with at least the audio information by the audio frame unit. A plurality of audio packets (43, 202) are arranged along the record track, in each of which audio information pieces (207) constructing the audio information sampled by a predetermined sampling frequency and audio control information (203) for controlling a reproduction of the audio information pieces by the information reproducing apparatus are respectively recorded.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: September 28, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Takao Sawabe, Tokihiro Takahashi, Junichi Yoshio, Hidehiro Ishii, Hiroshi Nakamura, Kaoru Yamamoto, Akihiro Tozaki
  • Patent number: 5936925
    Abstract: An information recording medium is reproduced by an information reproducing apparatus for controlling a reproduction of record information based on a search control information recorded together with the record information, The medium includes: processed record information including a plurality of information units generated by applying a signal processing onto the record information; a search control information for searching, out of the processed record information, a reproduction record unit which is a record unit including the record information to be reproduced. The search control information is multiplexed with the processed record information. The reproduction record unit includes an initial one of the processed record information constituting the information units included in the reproduction record unit which is recorded at a recording position on a recording medium corresponding to a head portion of an area where the processed record information in the reproduction record unit is recorded.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: August 10, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Junichi Yoshio, Kyota Funamoto, Takao Sawabe, Ryuichiro Yoshimura, Yoshiaki Moriyama, Kaoru Yamamoto, Akihiro Tozaki
  • Patent number: 5933569
    Abstract: An information recording medium is recorded with a plurality of data groups, each including at least one of video information and audio information and a reproduction permission level by which a reproduction of at least one of the video information and the audio information is permitted; and a reproduction management information including the reproduction permission range information for prescribing the range of the reproduction permission level for the data group which reproduction is permitted. When the reproduction permission level and the reproduction management information are selected, the range of the reproduction permission level of the data groups which reproduction are permitted is detected on the basis of the reproduction permission level selected. Then, the data group is reproduced when the reproduction permission level of the selected data group is included in the range of the reproduction permission level detected.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: August 3, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Takao Sawabe, Ryuichiro Yoshimura, Yoshiaki Moriyama, Kaoru Yamamoto, Akihiro Tozaki, Junichi Yoshio
  • Patent number: 5892983
    Abstract: A recording apparatus for recording information on a record medium is provided with: a controller for generating a start address of each time-unit piece of main information divided by a predetermined time unit based on time information corresponding to the main information; a processing device for coding and compressing the main information by every predetermined compression unit to generate a plurality of compression-unit pieces of compressed data; and a recording device for recording the plurality of compression-unit pieces of compressed data and the generated start address as at least a portion of access information for the main information onto the record medium.
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: April 6, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Akihiro Tozaki, Hiroshi Nakamura
  • Patent number: 5889746
    Abstract: An information recording medium includes: record information pieces logically independent of each other and constituting a hierarchical structure of hierarchical layers; layer information pieces for specifying one of the hierarchical layer; kind information pieces for indicating kinds of information relating to the record information pieces; a text group including layer related texts and record information related texts successively arranged in a mixed manner; text arrangement information pieces corresponding to the text group and arranged in pair with one of the layer information piece and the kind information piece corresponding to the text, the text arrangement information piece indicating a position of the text within the text group.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: March 30, 1999
    Assignees: Pioneer LDC, Inc., Pioneer Electronic Corporation
    Inventors: Yoshiaki Moriyama, Takao Sawabe, Ryuichiro Yoshimura, Kaoru Yamamoto, Akihiro Tozaki, Junichi Yoshio, Hirohide Kobori, Takeshi Iwase, Hiroki Yamanashi, Hisayuki Nakayama
  • Patent number: 5886965
    Abstract: A recording medium includes a first area for recording a signal including a plurality of units; and a second area for recording a contents information signal relating to a the plurality of units. The contents information signal includes relative position signals of the units and category signals indicative of the categories of the units classified in a predetermined classification manner.
    Type: Grant
    Filed: June 27, 1996
    Date of Patent: March 23, 1999
    Assignee: Pioneer Electronic Corporation
    Inventors: Akihiro Tozaki, Takao Sawabe
  • Patent number: 5787222
    Abstract: A recording apparatus for recording record information onto a record medium to be reproduced by a reproducing apparatus, is provided with: a process device for dividing the record information into a plurality of partial record informations on the basis of material content information, which indicates a material content of the record information and is given from the external; a controller for generating reproduction control information to control the reproducing apparatus to reproduce the partial record informations in a predetermined order, which is set in advance or which is based on a condition given to the reproducing apparatus from the external at a time of reproduction; and a recording device for recording the partial record informations and the reproduction control information onto the record medium.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: July 28, 1998
    Assignee: Pioneer Electronic Corporation
    Inventors: Akihiro Tozaki, Hiroshi Nakamura, Junichi Yoshio
  • Patent number: 5758008
    Abstract: The recording apparatus is provided with: a first signal process unit for compressing a video signal to generate a compression video signal and for dividing and multiplexing an audio signal and the compression video signal respectively by every predetermined multiplexing unit, to output a compression multiplexed signal; a second signal process unit for detecting a position in the record information of the video information for each compression unit; a third signal process unit for detecting a reproduction time to generate a content information signal corresponding to content information indicating the detected reproduction time and the content type of the partial piece of information; an addition information generating device for generating reproduction addition information including elapsed time information and the time-axis information; a multiplexing device for multiplexing the reproduction addition information signal and the compression multiplexed signal; and a recording device for recording the informat
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: May 26, 1998
    Assignee: Pioneer Electronic Corporation
    Inventors: Akihiro Tozaki, Hiroshi Nakamura
  • Patent number: 5742569
    Abstract: An information recording apparatus is provided with a signal process device for generating and outputting content information including (i) identification information to identify each of partial record informations constructing whole record information to be recorded onto an information record medium and to indicate content of each of the partial record informations, and (ii) start position information indicating a start position on the information record medium of each of the partial record informations corresponding to the identification information, on the basis of control information inputted from the external to control a reproduction of the record information. The information recording apparatus is also provided with: a multiplex device for multiplexing the record information and the content information, to thereby generate and output multiplexed record information; and a record device for recording the multiplexed record information onto the information record medium.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: April 21, 1998
    Assignee: Pioneer Electronic Corporation
    Inventors: Kaoru Yamamoto, Hirohide Kobori, Takao Sawabe, Junichi Yoshio, Ryuichiro Yoshimura, Yoshiaki Moriyama, Akihiro Tozaki
  • Patent number: 5729516
    Abstract: In a recording medium such as a DVD, various information such as video and audio information is recorded in a form of a plurality of recorded information pieces. Further, control information pieces prescribe the manner of reproducing the recorded information pieces. Copy information indicating whether or not the recorded information pieces are copy-prohibited is prepared and recorded for each of the recorded information pieces. In addition, aggregate copy information pieces indicating whether or not the recorded information pieces under the control by the control information piece are copy-prohibited are recorded. In accordance with the copy information and the aggregate copy information pieces, a copying system performs accurate copy management.
    Type: Grant
    Filed: March 11, 1997
    Date of Patent: March 17, 1998
    Assignee: Pioneer Electronic Coporation
    Inventors: Akihiro Tozaki, Takao Sawabe, Ryuichiro Yoshimura, Yoshiaki Moriyama, Kaoru Yamamoto, Junichi Yoshio
  • Patent number: 5283659
    Abstract: An apparatus in which a high vision signal having 1125 horizontal lines per frame is divided into three signals and three channel signals each having 375 horizontal lines per frame are obtained wherein the resultant three channel signals are time base expanded, three channel signals in a base band of 10 MHz are obtained, and the three channel signals are independently recorded onto a medium. A recording medium on which signals is recorded and processed by the above apparatus is provided.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: February 1, 1994
    Assignee: Pioneer Electronic Corporation
    Inventors: Toru Akiyama, Yoshiyuki Okuda, Akihiro Tozaki, Motooki Sugihara
  • Patent number: 5179453
    Abstract: A recording medium playback apparatus for production of a composite video signal by combining a multiplicity of H-line video signals reproduced from playback of a plurality of recording media which carry different video signals respectively is provided in which when some H-line video signals are absent in the composite video signal, the number of the absent H-line video signals are examined and then, compensation for the absent H-line video signals is executed by interpolation between two, preceding and succeeding, H-line video signals if the number is not more than a given value or by holding a row of the preceding H-line video signals if the number exceeds the given value.
    Type: Grant
    Filed: April 3, 1991
    Date of Patent: January 12, 1993
    Assignee: Pioneer Electronic Corporation
    Inventor: Akihiro Tozaki