Patents Assigned to Pioneer Electronic Corporation
  • Patent number: 7840117
    Abstract: An information recording medium includes: a plurality of recorded information pieces being independent of each other; a plurality of individual attribute information pieces each corresponding to each of the recorded information piece and including information relating to attributes of the recorded information piece and functions in reproduction; and an aggregate attribute information piece, recorded at a position read out prior to any other positions on said recording medium, and including at least a part of the individual attribute information piece for all of the recorded information pieces.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: November 23, 2010
    Assignee: Pioneer Electronic Corporation
    Inventors: Yoshiaki Moriyama, Takao Sawabe, Kaoru Yamamoto, Ryuichiro Yoshimura, Akihiro Tozaki, Junichi Yoshio
  • Patent number: 7801324
    Abstract: A speaker apparatus comprises a dome type diaphragm comprising: a reinforcing rib; and an edge damper integrally formed with an outer periphery of the dome type diaphragm; and a frame supporting the dome type diaphragm through the edge damper. The reinforcing rib comprises at least one of a groove portion and a ridge portion. The reinforcing rib is extended radially with respect to the dome center portion from a vicinity of a dome center portion of the dome type diaphragm to a dome outer periphery side.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: September 21, 2010
    Assignees: Pioneer Corporation, Tohoku Pioneer Electronic Corporation
    Inventors: Yoshihiro Kimura, Masanori Ito
  • Patent number: 7783158
    Abstract: An information record medium having a record track recorded with at least video information is to be reproduced by a reproducing apparatus, which has a read device and reproduces at least video information while relatively moving the read device along the record track. At least video information and control information comprising access information to access the video information are recorded on the record track and are each divided into a plurality of first data groups, each of which is a unit accessible by the reproducing apparatus and comprises the video and control informations. Management information including (i) reproduction procedure information and (ii) a plurality of first search prohibit informations, is collectively recorded at one portion of the record track for each of the second data groups.
    Type: Grant
    Filed: December 20, 2005
    Date of Patent: August 24, 2010
    Assignee: Pioneer Electronic Corporation
    Inventors: Junichi Yoshio, Ryuichiro Yoshimura, Takao Sawabe, Yoshiaki Moriyama, Kaoru Yamamoto, Akihiro Tozaki, Hiroshi Nakamura
  • Patent number: 7706560
    Abstract: A cross-sectionally substantially-semicircular portion of an edge portion adapted to connect an outer periphery of a diaphragm to a speaker frame is configured to have an uneven-thickness structure in which the thickness of the portion gradually decreases toward a sticking portion of an outer peripheral portion of the speaker frame from a sticking portion of the outer periphery of the diaphragm. Thus, the propagation characteristic of vibrations generated on the edge portion is improved. Disturbance is prevented from occurring in an mid-range frequency characteristic due to inverse resonance caused by the edge portion.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: April 27, 2010
    Assignees: Pioneer Corporation, Tohoku Pioneer Electronic Corporation
    Inventors: Koji Takayama, Hiroyuki Kobayashi, Shinichi Hayasaka, Kazuki Yuze
  • Patent number: 7704428
    Abstract: A method for manufacturing a diaphragm for use in an electroacoustic transducer in a multi-layer structure which includes a first diaphragm layer of synthetic resin molded in a predetermined shape by injection molding and a second diaphragm layer layered in intimate contact on the first diaphragm layer and made of substance different from the first diaphragm layer, includes executing successively a pre-molding step and an injection-molding step, thereby providing the multi-layer structure. The pre-molding step includes attaching a non-molded sheet-like material which is a raw material of the second diaphragm layer to a mating surface of one of the die part of an injection molding die, and closing thereafter the injection molding die to give the sheet-like material a predetermined diaphragm shape. The injection molding step includes injecting synthetic resin material constituting the first diaphragm layer into the injection molding die thus closed thereby to form the first diaphragm layer.
    Type: Grant
    Filed: April 26, 2005
    Date of Patent: April 27, 2010
    Assignees: Pioneer Corporation, Tohoku Pioneer Electronic Corporation
    Inventors: Koji Takayama, Masatoshi Sato, Shinichi Hayasaka, Hiroyuki Kobayashi
  • Patent number: 7702214
    Abstract: An information storage medium includes: a video zone for recording audio/video information including video information and audio information associated with the video information; an audio zone for recording audio information; first navigation information for a video player which can reproduce the audio/video information; second navigation information for an audio player which can reproduce the audio information in the video zone and the audio information in the audio zone; and third navigation information for a compatible player which can reproduce both the audio/video information and the audio information. The first navigation information, the second navigation information and the third navigation information are recorded separately from each other.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: April 20, 2010
    Assignee: Pioneer Electronic Corporation
    Inventors: Kaoru Yamamoto, Takao Sawabe, Hidehiro Ishii, Shozo Ema, Tokihiro Takahashi
  • Patent number: 7577270
    Abstract: A dome-shaped diaphragm includes a dome part which is formed in a dome-like shape and is convex forward in an oscillating direction, a neck part which is provided in continuation to an outer periphery of the dome part, and an edge including a roll part which is formed in a curved shape and is convex forward in the oscillating direction, and continued to the neck part at an inner peripheral edge thereof, wherein the neck part is provided with a curved portion which is convex backward in the oscillating direction, and an outer periphery of the curved portion is smoothly continued to an inner periphery of the roll part.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: August 18, 2009
    Assignees: Pioneer Corporation, Tohoku Pioneer Electronic Corporation
    Inventors: Minoru Horigome, Hiroshi Sato
  • Patent number: 7561204
    Abstract: Values of actual pixels existing on upper and lower scanning lines of a pixels to be interpolated are detected, and a differential of each of the actual pixels is calculated. Each of the actual pixels is weighted in accordance with the differential and both the weighted values of the pixels are added together. The sum of the addition is used as a value of the pixel to be interpolated.
    Type: Grant
    Filed: February 3, 1999
    Date of Patent: July 14, 2009
    Assignee: Pioneer Electronic Corporation
    Inventor: Hirofumi Honda
  • Patent number: 7555202
    Abstract: A digital data recording/reproducing apparatus which divides each of information data pieces into a plurality of cells, further divides each of the cells into a series of a plurality of units, and records the units. The digital data recording/reproducing apparatus has means for recording a required time for reproduction until the head position of a unit is reached, with reference to the head position of an information data cell to which a cell belongs, as a unit start time, in addition to each of the units, and means for recording a cell start time (Ts) equal to a required time for reproduction until the head position of each of the cells is reached, and a required time for reproduction (Ps) of each of the cells in a management data region.
    Type: Grant
    Filed: July 31, 2002
    Date of Patent: June 30, 2009
    Assignee: Pioneer Electronic Corporation
    Inventors: Tadashi Noguchi, Akihiro Tozaki, Hidehiro Ishii
  • Patent number: 7548275
    Abstract: A right side interpolation component and a left side interpolation component for each present pixel are calculated. The right side interpolation component of a present pixel on the left side of an assumption pixel to be interpolated is added to the left side interpolation component of another present pixel on the right side of the assumption pixel, thereby obtaining a pixel data for the assumption pixel. The right side interpolation component and the left side interpolation component are calculated based on a pixel data of a central present pixel and pixel data of present pixels around the central present pixel.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: June 16, 2009
    Assignee: Pioneer Electronic Corporation
    Inventor: Hirofumi Honda
  • Patent number: 7398010
    Abstract: An information record medium (1: DVD) has a record track recorded with record information to be reproduced by an information reproducing apparatus (S2). The information reproducing apparatus is provided with a read device (80), and performs a reproduction while moving the read device along the record track at a predetermined reading linear velocity. The record information is divided into a plurality of first data groups (30: VOBU), each of which is a unit able to be accessed by the information reproducing apparatus, recorded on the record track. Lowest reading rate information (212) indicates a minimum requirement of a reading rate for the information reproducing apparatus to reproduce a reproduction unit, which comprises at least one of the first data groups and which is to be reproduced by the information reproducing apparatus such that a sequential logical meaning of the reproduction unit is continuous.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: July 8, 2008
    Assignee: Pioneer Electronic Corporation
    Inventors: Akihiro Tozaki, Tokihiro Takahashi, Hidehiro Ishii, Junichi Yoshio, Hiroshi Nakamura, Takao Sawabe, Yoshiaki Moriyama, Kaoru Yamamoto
  • Patent number: 7386602
    Abstract: A medium is set in a computer, and identification information of the set medium is read out. Related information about the medium is obtained in accordance with the identification information read from the medium. The obtained related information is displayed on a display.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: June 10, 2008
    Assignee: Pioneer Electronic Corporation
    Inventors: Sho Murakoshi, Hiroaki Shibuki, Hidemi Usuba, Shinsuke Nishimura, Keiichi Yamauchi
  • Patent number: 7370088
    Abstract: A medium is set in a computer, and identification information of the set medium is read out. Related information about the medium is obtained in accordance with the identification information read from the medium. The obtained related information is displayed on a display.
    Type: Grant
    Filed: November 29, 2004
    Date of Patent: May 6, 2008
    Assignee: Pioneer Electronic Corporation
    Inventors: Sho Murakoshi, Hiroaki Shibuki, Hidemi Usuba, Shinsuke Nishimura, Keiichi Yamauchi
  • Patent number: 7349749
    Abstract: An audio signal mixer capable of performing a long mix editing with simple manipulations. A second audio signal producing means is prevented from producing a second audio signal when an operating member is positioned at a first end, while a first audio signal producing means is prevented from producing a first audio signal when the operating member is positioned at a second end. As the operating member is moved away from the first end or the second end, the first and second audio signals are mixed. As the operating member is moved toward the second end, the level of the first audio signal is gradually decreased while the level of the second audio signal is gradually increased. Conversely, as the operating member is moved toward the first end, the level of the second audio signal is gradually decreased while the level of the first audio signal is gradually increased.
    Type: Grant
    Filed: August 20, 2001
    Date of Patent: March 25, 2008
    Assignee: Pioneer Electronic Corporation
    Inventors: Yoichi Yamada, Takeaki Funada, Gen Inoshita
  • Patent number: RE40312
    Abstract: A transmitting method of digital data whereby information data can be reproduced at a high precision. In order to retain digital data in sectors comprising a plurality of sync frames and sequentially transmit, the sync frame is comprised of the sync signal and the run length limited code which satisfies the limitations of the minimum run length and the maximum run length, and the sync signal includes the sync pattern constituted by a bit pattern of a run length that is longer than the maximum run length by only 3T and addition bit patterns which are arranged before and after the bit pattern and each of which has a urn length that is longer than the minimum run length. The sync signal includes a specific code which indicates a position in the sector and which enables the DC control to be performed.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: May 13, 2008
    Assignee: Pioneer Electronic Corporation
    Inventors: Tadashi Kojima, Koichi Hirayama, Hisashi Yamada, Yoshiaki Moriyama, Fumihiko Yokogawa, Takao Arai, Toshifumi Takeuchi, Shinichi Tanaka, Akira Kurahashi, Toshiyuki Shimada
  • Patent number: RE41430
    Abstract: A rotation control apparatus which can maintain an accurate rotating state even in a high density optical disk (DVD) having a structure such that parts of the sync signal are recorded at an interval different from that of the other sync signal parts. The apparatus has: a unit period signal generator for generating a period signal of a unit period; a pre-pit detector for detecting a pre-pit from the DVD; a phase difference detector for detecting a phase difference between the detection timing of the pre-pit and the unit period signal; and a holding circuit for holding the phase difference detected. The rotation of the DVD is controlled on the basis of the phase difference held at the holding circuit.
    Type: Grant
    Filed: July 11, 2003
    Date of Patent: July 13, 2010
    Assignee: Pioneer Electronic Corporation
    Inventors: Kazuo Kuroda, Masayoshi Yoshida, Toshio Suzuki
  • Patent number: RE41688
    Abstract: A writable optical disc has at least two chapters comprising a first chapter and a second chapter. Management data including a partition address is written in a management area in each chapter, and information is written in an information recording area after management area in the first chapter. A partition data is written in a partition area after the information recording area of the first chapter. The partition data is erased when writing the second chapter, so that the first chapter is discriminated from the second chapter, and a partition data is written in a partition area of the second chapter after writing of information in an information recording area thereof.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: September 14, 2010
    Assignee: Pioneer Electronic Corporation
    Inventor: Kazuo Kuroda
  • Patent number: RE41735
    Abstract: A writable optical disc has at least two chapters comprising a first chapter and a second chapter. Management data including a partition address is written in a management area in each chapter, and information is written in an information recording area after management area in the first chapter. A partition data is written in a partition area after the information recording area of the first chapter. The partition data is erased when writing the second chapter, so that the first chapter is discriminated from the second chapter, and a partition data is written in a partition area of the second chapter after writing of information in an information recording area thereof.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: September 21, 2010
    Assignee: Pioneer Electronic Corporation
    Inventor: Kazuo Kuroda
  • Patent number: RE42506
    Abstract: An information recording apparatus (SSI) is provided with: a signal process device (72) for applying a predetermined signal process to a plurality of partial record information blocks constructing whole record information (R) to thereby generate processed partial record information blocks (Sr) each composed of a plurality of predetermined information units (IU), and for generating and outputting recording position information (Sac), which is to be recorded by each of predetermined reproduction units (VOBU) composing the information units, for respective one of the reproduction units. The recording position information indicates recording positions of the reproduction units corresponding to reproduction times of the partial record information blocks within a predetermined range before and after the respective one of the reproduction units on an axis of reproduction time of each of the partial record information blocks.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: June 28, 2011
    Assignee: Pioneer Electronic Corporation
    Inventors: Kaoru Yamamoto, Akihiro Tozaki, Takao Sawabe, Ryuichiro Yoshimura, Yoshiaki Moriyama, Junichi Yoshio
  • Patent number: RE43056
    Abstract: An optical disk includes: a substrate shaped in a disk, and having a recording surface; a plurality of recording tracks formed substantially coaxially on the recording surface; a plurality of information pits, which are reproducible by a super resolution reproduction, recorded on the plurality of recording tracks in a recording operation of the optical disk; and an address pit for address reproduction formed in advance to the recording operation on the recording surface with respect to one set of recording tracks adjacent to each other in a radial direction of the optical disk.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: January 3, 2012
    Assignee: Pioneer Electronic Corporation
    Inventor: Nobuaki Onagi