公开(公告)号：JPH11306572A

公开(公告)日：1999-11-05

申请号：JP11520298

申请日：1998-04-24

Applicant: SONY CORP

Inventor： TSUKADA HIROSHI ,  NAGASHIMA KENJI ,  SETO HIDEKAZU ,  SATO MASASHI

IPC: G11B7/095 ,  G11B19/02

Abstract: PROBLEM TO BE SOLVED: To make it possible to achieve a high speed and stable skew servo operation by detecting a tilted state of an optical axis of a laser beam from an optical head to a disk at intervals of every n rotations of a rotating disk-like recording medium and also at a timing when a rotated angle position of the disk-like recording medium takes a specific position, and executing skew control. SOLUTION: Skew control processing is executed at every predetermined interruption timing, and as variables to be used, there are a skew error signal total value, a count value of FG pulses, and an average value of skew error signals, and an upper and an lower limit values for which an appropriate skew error range is set are used. Ordinary processing is executed once a rotation, and the skew control is executed at a timing when a rotated angle position of the disk takes a specific position. In the case of a double-speed, the processing is executed every two rotations, for a quadruple speed, every four rotations, and for an octuple speed, every eight rotations, and even if the disk speed is increased, the skew operation is properly executed.

公开(公告)号：JPH11161989A

公开(公告)日：1999-06-18

申请号：JP32825897

申请日：1997-11-28

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI ,  TSUKADA HIROSHI

IPC: G11B7/095

Abstract: PROBLEM TO BE SOLVED: To provide an optical information recording/reproducing method and an optical information recording/reproducing device therefor capable of performing skewing servo operation at high speed, with high accuracy and a low power consumption according to the operation. SOLUTION: This optical information recording/reproducing device is provided with a skew sensor 5 for detecting the tilt of an optical disk 1, a current/voltage converter circuit 6 for controlling so that the optical axis of a laser beam is held perpendicular to the surface on which an information signal of the optical disk 1 is recorded, a differential amplifier circuit 7, a window comparator 8, a CPU 9, a driver 10 and a skew motor 11, since control is changed in accordance with the recording/reproducing state of information signal or the tilt state by the skew sensor 5, by changing whether the control with high accuracy is performed or the control is performed in consideration of service life, a power consumption and heat generation, a skewing angle is compensated at high speed and with high accuracy.

公开(公告)号：JPH10208271A

公开(公告)日：1998-08-07

申请号：JP2758698

申请日：1998-02-09

Applicant: SONY CORP

Inventor： KUME HIDEHIRO ,  YAMAMOTO ETSUSHI ,  NAGASHIMA KENJI

IPC: G11B7/09 ,  G11B7/125

Abstract: PROBLEM TO BE SOLVED: To suppress the deterioration of recording and/or reproducing characteristics due to out-of-focus by correcting the influence due to the astigmatic difference of a semiconductor laser. SOLUTION: The semiconductor laser emitting a light beam irradiating an optical disk is arranged so that the light beam emitted from the semiconductor laser irradiates the optical disk at an angle of about 30 deg. to 60 deg. between a surface perpendicular to the joint surface of the semiconductor layers of this semiconductor laser and the tangential direction of the recording track TR of the optical disk so as to correct asymmetry around the tangential direction based on the out-of-focus of a beam spot on the optical disk.

公开(公告)号：JPH07182664A

公开(公告)日：1995-07-21

申请号：JP34736293

申请日：1993-12-24

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI

IPC: G11B11/10 ,  G11B7/085 ,  G11B7/09 ,  G11B11/105

Abstract: PURPOSE:To obtain a method for detecting the position of an optical pickup and an objective lens whereby the objective lens is stabilized in a relatively short time at a high-speed access time. CONSTITUTION:The optical pickup is provided with an operating means 27 for operating the difference of 'detecting signals of sensor elements A, D, C, B positioned at the opposite side of a photodetector in an accessing direction and a switching circuit 30 for switching an output signal from the operating circuit and a tracking error detection signal from a tracking sensor part. The optical pickup is constituted so that the switching circuit is switched to the side of the operating means 27 for a predetermined time after a high-speed access.

公开(公告)号：JPH0765399A

公开(公告)日：1995-03-10

申请号：JP22941593

申请日：1993-08-23

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI

IPC: G11B7/125 ,  G11B7/13 ,  G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To obtain an optical pickup provided with a light receiving and emitting device constituted by integrating a light emitting part and h light receiving part, which is easily assembled. CONSTITUTION:This optical pickup 10 includes a light emitting element 11 emitting a light beam, an objective lens 13 projecting the light beam from the light emitting element on the surface of an optical disk and receiving the reflected light beam reflected on the surface of the optical disk, and a light receiving element 15 receiving the reflected light beam transmitted through the objective lens. It is constituted so that the light emitting element and the light receiving element may be disposed on the same substrate 16.

公开(公告)号：JPH0668513A

公开(公告)日：1994-03-11

申请号：JP21543092

申请日：1992-07-21

Applicant: SONY CORP

Inventor： SHIBATA KEIICHI ,  NAGASHIMA KENJI ,  MATSUMURA MASASHI

IPC: G02B7/02 ,  G11B7/135

Abstract: PURPOSE:To securely hold an objective lens by providing a groove enclosing an objective lens to the lens holding member and applying an adhesive thereto. CONSTITUTION:This optical pickup holds the objective lens 10 with the objective lens holding member 20. The member 20 is constituted by forming a rib 20a at its top end face so as to enclose the outer periphery of the lens 10 and forming a wall surface so as to enclose the ring 10. The groove opening on the upper side is formed by the outer periphery and wall surface of the lens 10 and the adhesive is applied to this groove. Since the groove opens to the upper side, the outflow of the adhesive is prevented even if a large amt. of the adhesive is applied. The lens 10 is thus securely held. The rib 20a is formed along the outside shape of the member 20, by which the coated amt. of the adhesive is increased. Since the member 20 is integrally formed, the constitution over the entire surface is simplified. The secure holding of the lens 10 is thus possible.

公开(公告)号：JPH02179934A

公开(公告)日：1990-07-12

申请号：JP33490888

申请日：1988-12-29

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI

IPC: G11B7/12 ,  G11B7/135

Abstract: PURPOSE:To eliminate the jitter and level decrease of a regenerative signal caused by an optical axis dislocation by using a mask which extends the shape of the spot of laser beams which irradiates an optical disk in a direction orthogonal to the track scanning direction of the laser beams. CONSTITUTION:The laser beams from a laser light source 11 are made into parallel beams through a collimator lens 12, and then irradiates an optical disk 10 through a mask 13 and an objective lens 14, which extend the shape of the spot of the laser beams which irradiates the optical disk in the direction (radial direction) orthogonal to the track scanning direction (tangential direction) of the laser beams. In such a case, since sensitivity for a comas abrration in the radial direction of the optical disk can be made insensitive, and the beam part at the large spherical abrration in the peripheral part of the laser beams can be shaded, the jitter and level decrease of the regenerative signal caused by the optical axis dislocation at the time of a tracking servo control and random access can be prevented.

公开(公告)号：JPS61147759A

公开(公告)日：1986-07-05

申请号：JP26595084

申请日：1984-12-17

Applicant: SONY CORP

Inventor： NAGASHIMA KENJI

IPC: H02K29/00

Abstract: PURPOSE:To remove a static cogging by deforming part of a stator yoke. CONSTITUTION:A circular recess 13 punched by half is formed at a stator yoke 10 for forming a disc shape of a flat brushless motor. Eight N- and S-poles shown by broken lines in the drawing illustrate the magnetizing distribution of a magnet 9 opposed to the yoke 10. Around hole 20 is also formed at an interval of an angle theta1 with respect to the recess 13 at the yoke 10. The angle theta1 is provided in case of 8 poles, by theta1=45n+45/2(n=0, 1, 2...). Thus, a static cogging is newly generated by the hole 20, the cogging characteristic is different in phase at 180 deg. from the cogging characteristic by the recess 13, and the both cancel each other out to obtain normal torque characteristic.

公开(公告)号：JP2005208314A

公开(公告)日：2005-08-04

申请号：JP2004014493

申请日：2004-01-22

Applicant: Sony Corp ,  ソニー株式会社

Inventor： NAGASHIMA KENJI ,  TAKAHASHI TAKAO

IPC: G02F1/133 ,  G09G3/20 ,  G09G3/36 ,  G09G5/00 ,  G09G5/10 ,  G09G5/36

Abstract: PROBLEM TO BE SOLVED: To realize an image display device which displays an image with good sharpness even when the display gradations of a display means are insufficient with respect to the gradations of the image.
SOLUTION: The image display device is provided with: the display means which has the intrinsic display gradations and displays the image based on an inputted image signal; and a gradation conversion means which converts the pixel value of the image signal so as to be matched with the display gradations of the display means when the gradations of the image signal are more than the display gradations of the display means. The gradation conversion means is adapted to apply dithering processing to the image signal when converting the pixel value of the image signal. The gradation conversion means also compares the luminance average of the entire part of the image that the image signal represents and the prescribed luminance reference value in converting the pixel value of the image signal, and is adapted to reduce the gamma value of the image signal when the luminance average is greater than the luminance reference value, and to increase the gamma value of the image signal when the luminance average is smaller than the luminance reference value.
COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：即使当显示装置的显示灰度相对于图像的灰度不足时，实现显示具有高清晰度的图像的图像显示装置。 解决方案：图像显示装置设置有：具有本征显示灰度的显示装置，并且基于输入的图像信号显示图像; 以及灰度转换装置，当图像信号的灰度大于显示装置的显示灰度时，转换图像信号的像素值以与显示装置的显示灰度匹配。 灰度转换装置适于在转换图像信号的像素值时对图像信号应用抖动处理。 灰度转换装置还将图像信号表示的图像的整个部分的亮度平均值与转换图像信号的像素值之间的规定亮度参考值进行比较，并且适于在图像信号的像素值 亮度平均值大于亮度基准值，并且当亮度平均值小于亮度参考值时增加图像信号的伽马值。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2005198207A

公开(公告)日：2005-07-21

申请号：JP2004004788

申请日：2004-01-09

Applicant: Sony Corp ,  ソニー株式会社

Inventor： KAMIMURA HIDEYUKI ,  TAKAHASHI TAKAO ,  YAMAMOTO EIJI ,  NAGASHIMA KENJI ,  ARIE TAKUMI ,  AMANO HIROSHI

IPC: A63F13/00 ,  A63F13/02 ,  B60R11/02 ,  H04R1/00 ,  H04R3/00

Abstract: PROBLEM TO BE SOLVED: To provide a body sensory acoustic system, and a device and method for controlling vibration, capable of providing a highly entertaining game environment to users. SOLUTION: The body sensory acoustic system comprises an electronic game device for generating drive signals, corresponding to game data stored in a filled storage medium or an external operational input, a body sonic device for generating vibration based on the driving signals output from the electronic game device; a status detection means for detecting a certain status of a mobile body with the electronic device and the body sonic device mounted thereon; and a control means for controlling vibration of the body sonic device, based on the detection result of the status detection means. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供身体感觉声学系统，以及用于控制振动的装置和方法，能够向用户提供高度娱乐的游戏环境。 身体感觉声学系统包括用于产生对应于存储在填充的存储介质或外部操作输入中的游戏数据的驱动信号的电子游戏装置，用于基于从...输出的驱动信号产生振动的人体声音装置 电子游戏装置; 状态检测装置，用于利用安装在其上的电子设备和身体声音装置来检测移动体的某一状态; 以及控制装置，用于根据状态检测装置的检测结果来控制身体声音装置的振动。 版权所有（C）2005，JPO＆NCIPI