公开(公告)号：DE60227720D1

公开(公告)日：2008-08-28

申请号：DE60227720

申请日：2002-10-31

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  SHIOZAKI YOSHIHIKO

IPC: G11B7/0045 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/125 ,  G11B23/30 ,  G11B23/40

Abstract: An optical disk apparatus for recording information by irradiating a laser beam onto an optical disk, comprising: a pickup that is provided for irradiating the laser beam onto the optical disk having an optically recordable side and a thermally sensitive side opposite to the optically recordable side; a rotary driving section that is provided for rotating the optical disk at a given rotation speed; a clock generating section that generates a clock signal having a frequency proportional to the rotation speed of the optical disk; a recording control section operative when the optical disk is set such as to face the optically recordable side to the pickup for controlling the pickup to effect recording of information on the optically recordable side by irradiating the laser beam; a drawing control section operative when the optical disk is set such as to face the thermally sensitive side to the pickup for controlling the pickup to effect drawing of a visible image on the thermally sensitive side by irradiating the laser beam according to given image information such that the laser beam is modulated each period of the dock signal; a rotation detection section that detects each time the optical disk is rotated one round during the drawing of the visible image; and a scanning section operative when the optical disk is detected to rotate one round for advancing the laser beam by one step interval radially of the rotated optical disk to thereby scan the laser beam over the optical disk during the drawing of the visible image on the thermally sensitive side; wherein the drawing control section operates each time the optical disk is detected to rotate one round for controlling the pickup to irradiate the laser beam to effect the drawing of the visible image during one round, and controlling the pickup to suspend irradiating of the laser beam during next one round so as to prepare for the drawing of the visible image.

公开(公告)号：HK1053902A1

公开(公告)日：2003-11-07

申请号：HK03106204

申请日：2003-08-29

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  SHIOZAKI YOSHIHIKO

IPC: B41M20060101 ,  G11B7/0037 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B23/30 ,  G11B23/40

Abstract: An optical disk apparatus for recording information by irradiating a laser beam onto an optical disk, comprising: a pickup that is provided for irradiating the laser beam onto the optical disk having an optically recordable side and a thermally sensitive side opposite to the optically recordable side; a rotary driving section that is provided for rotating the optical disk at a given rotation speed; a clock generating section that generates a clock signal having a frequency proportional to the rotation speed of the optical disk; a recording control section operative when the optical disk is set such as to face the optically recordable side to the pickup for controlling the pickup to effect recording of information on the optically recordable side by irradiating the laser beam; a drawing control section operative when the optical disk is set such as to face the thermally sensitive side to the pickup for controlling the pickup to effect drawing of a visible image on the thermally sensitive side by irradiating the laser beam according to given image information such that the laser beam is modulated each period of the dock signal; a rotation detection section that detects each time the optical disk is rotated one round during the drawing of the visible image; and a scanning section operative when the optical disk is detected to rotate one round for advancing the laser beam by one step interval radially of the rotated optical disk to thereby scan the laser beam over the optical disk during the drawing of the visible image on the thermally sensitive side; wherein the drawing control section operates each time the optical disk is detected to rotate one round for controlling the pickup to irradiate the laser beam to effect the drawing of the visible image during one round, and controlling the pickup to suspend irradiating of the laser beam during next one round so as to prepare for the drawing of the visible image.

公开(公告)号：DE602004016713D1

公开(公告)日：2008-11-06

申请号：DE602004016713

申请日：2004-09-30

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  KONAGAI YUSUKE

IPC: G11B7/26 ,  G11B23/40 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/24

公开(公告)号：DE60237050D1

公开(公告)日：2010-08-26

申请号：DE60237050

申请日：2002-10-31

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  SHIOZAKI YOSHIHIKO

IPC: G11B7/0037 ,  G11B7/0045 ,  G11B7/007 ,  G11B7/125 ,  G11B23/30 ,  G11B23/40

公开(公告)号：SG47606A1

公开(公告)日：1998-04-17

申请号：SG1996003111

申请日：1989-11-21

Applicant: YAMAHA CORP

Inventor： USUI AKIRA ,  TORII JUNJU ,  TAKEUCHI RENICHI

IPC: H03H17/06

Abstract: A digital filter performs a predetermined arithmetic operation on input digital data inputted thereto in time-series manner by the predetermined first sampling period to thereby generate output digital data corresponding to a second sampling frequency which is N (where N denotes an integral number) times larger than the predetermined first sampling frequency. This digital filter provides a synchronizing signal generating circuit (20) and an operation control circuit (18). The synchronizing signal generating circuit detects the predetermined first sampling period of the input digital data to thereby generate a synchronizing signal having the second sampling frequency. The operation control circuit is activated by its internal clock which is asynchronous with the input digital data. This operation control circuit starts to perform its operation processes when the synchronizing signal is supplied thereto, thereafter it terminates the operation processes when a predetermined step number is completed.

公开(公告)号：EP1662842A4

公开(公告)日：2010-03-31

申请号：EP04771642

申请日：2004-08-06

Applicant: YAMAHA CORP

Inventor： TAKAMAI SUSUMU ,  USUI AKIRA

IPC: H04R1/40 ,  H04S7/00 ,  H04R3/12 ,  H04R5/02 ,  H04S3/00 ,  H04S5/02

CPC classification number: H04R5/02 ,  H04R1/403 ,  H04R3/12 ,  H04R2201/401 ,  H04R2203/12 ,  H04R2205/022 ,  H04R2499/15 ,  H04S3/00

Abstract: A multi-channel audio system is constituted using at least one line array speaker unit, in which plural speakers are arrayed in line, wherein the same audio signal is supplied with a prescribed delay time to each of the speakers, thus forming plural sound beams. The plural sound beams are reflected on a wall surface and a ceiling of a room so as to form plural virtual sound sources surrounding a listening position, and emission directions and intensities of the sound beams are controlled so as to localize a phantom at a prescribed position based on the plural virtual sound sources. By appropriately arranging plural line array speaker units horizontally, vertically, and slantingly in such a way that each line array speaker unit forms sound beams distributed and spread in a sectorial form, it is possible to realize a surround audio system having a high degree of freedom with regard to setup positions for forming virtual sound sources.

公开(公告)号：DE60320358T2

公开(公告)日：2009-06-04

申请号：DE60320358

申请日：2003-11-12

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  KONAGAI YUSUKE

IPC: G11B7/0045 ,  G11B7/24 ,  G11B7/007 ,  G11B23/40

Abstract: A visible image forming method is performed for forming a visible image on an optical disk by an optical disk recording apparatus, which is designed for applying a laser beam onto an optical disk according to first recording data of a predetermined format to form pits having lengths specified by the first recording data. First, a generating step is performed for generating second recording data by embedding image formation data of a visible image in a part of a predetermined format which is the same as predetermined for the first recording data. Second, an extracting step is performed for extracting the image formation data of the visible image from the second recording data of the predetermined format. Then, a forming step is performed for forming pits in the optical disk according to the extracted image formation data so as to form the visible image on the optical disk.

公开(公告)号：DE60230379D1

公开(公告)日：2009-01-29

申请号：DE60230379

申请日：2002-10-31

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  SHIOZAKI YOSHIHIKO

IPC: G11B7/0045 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/125 ,  G11B23/30 ,  G11B23/40

Abstract: An optical disk apparatus for recording information by irradiating a laser beam onto an optical disk, comprising: a pickup that is provided for irradiating the laser beam onto the optical disk having an optically recordable side and a thermally sensitive side opposite to the optically recordable side; a rotary driving section that is provided for rotating the optical disk at a given rotation speed; a clock generating section that generates a clock signal having a frequency proportional to the rotation speed of the optical disk; a recording control section operative when the optical disk is set such as to face the optically recordable side to the pickup for controlling the pickup to effect recording of information on the optically recordable side by irradiating the laser beam; a drawing control section operative when the optical disk is set such as to face the thermally sensitive side to the pickup for controlling the pickup to effect drawing of a visible image on the thermally sensitive side by irradiating the laser beam according to given image information such that the laser beam is modulated each period of the dock signal; a rotation detection section that detects each time the optical disk is rotated one round during the drawing of the visible image; and a scanning section operative when the optical disk is detected to rotate one round for advancing the laser beam by one step interval radially of the rotated optical disk to thereby scan the laser beam over the optical disk during the drawing of the visible image on the thermally sensitive side; wherein the drawing control section operates each time the optical disk is detected to rotate one round for controlling the pickup to irradiate the laser beam to effect the drawing of the visible image during one round, and controlling the pickup to suspend irradiating of the laser beam during next one round so as to prepare for the drawing of the visible image.

公开(公告)号：EP1624718A4

公开(公告)日：2009-05-27

申请号：EP04731478

申请日：2004-05-06

Applicant: YAMAHA CORP

Inventor： USUI AKIRA ,  NORO MASAO

IPC: H04R1/40 ,  H04R3/12 ,  H04R27/00 ,  H04S3/00

CPC classification number: H04R3/12 ,  H04R2203/12 ,  H04R2205/022 ,  H04S3/00

Abstract: An array speaker system comprising a plurality of speaker units each provided with a weighting means to give it weighting by a weighting factor based on Bessel function. An input signal is supplied to a speaker unit having a negative weighting factor after passed through an all path filter where the phase in the high-frequency band is rotated by 180°. Accordingly, a negative-phase signal is output for a signal in a low-frequency area to thereby prevent the lowering of acoustic radiation characteristics and also prevent acoustic radiation characteristics for a high-frequency-area signal from being formed into beams or comb shapes (COMB).

Abstract translation: 一种阵列扬声器系统，包括多个扬声器单元，每个扬声器单元设置有加权装置，以基于贝塞尔函数的加权因子给予加权。 在通过高频带中的相位旋转180°的全通路滤波器之后，输入信号被提供给具有负加权因子的扬声器单元。 因此，对于低频区域中的信号输出负相信号，从而防止声辐射特性的降低，并且还防止高频区域信号的声辐射特性形成为波束或梳形（ 梳）。

公开(公告)号：DE60235849D1

公开(公告)日：2010-05-12

申请号：DE60235849

申请日：2002-10-31

Applicant: YAMAHA CORP

Inventor： MORISHIMA MORITO ,  USUI AKIRA ,  SHIOZAKI YOSHIHIKO

IPC: G11B7/0045 ,  G11B7/0037 ,  G11B7/007 ,  G11B7/125 ,  G11B23/30 ,  G11B23/40

Abstract: An optical disk apparatus for recording information by irradiating a laser beam onto an optical disk, comprising: a pickup that is provided for irradiating the laser beam onto the optical disk having an optically recordable side and a thermally sensitive side opposite to the optically recordable side; a rotary driving section that is provided for rotating the optical disk at a given rotation speed; a clock generating section that generates a clock signal having a frequency proportional to the rotation speed of the optical disk; a recording control section operative when the optical disk is set such as to face the optically recordable side to the pickup for controlling the pickup to effect recording of information on the optically recordable side by irradiating the laser beam; a drawing control section operative when the optical disk is set such as to face the thermally sensitive side to the pickup for controlling the pickup to effect drawing of a visible image on the thermally sensitive side by irradiating the laser beam according to given image information such that the laser beam is modulated each period of the dock signal; a rotation detection section that detects each time the optical disk is rotated one round during the drawing of the visible image; and a scanning section operative when the optical disk is detected to rotate one round for advancing the laser beam by one step interval radially of the rotated optical disk to thereby scan the laser beam over the optical disk during the drawing of the visible image on the thermally sensitive side; wherein the drawing control section operates each time the optical disk is detected to rotate one round for controlling the pickup to irradiate the laser beam to effect the drawing of the visible image during one round, and controlling the pickup to suspend irradiating of the laser beam during next one round so as to prepare for the drawing of the visible image.