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公开(公告)号：JP2001292146A
公开(公告)日：2001-10-19
申请号：JP2000107065
申请日：2000-04-07
Applicant: SONY CORP
Inventor： OKAWA YOSHIHIRO , MIURA KIYOSHI
Abstract: PROBLEM TO BE SOLVED: To normally operate a short bus resetting, even if a cable with a connection opposite party is long. SOLUTION: In a bus initialized phase, a system is moved to the state (state of R1) of reset start at first and bus reset signals are transmitted to all connection opposite parties during prescribed time (1.26 μs in minimum and 1.40 μs in maximum in short bus resetting) regulated by reset-time. The system is moved to the state (state of R1) of reset waiting after prescribed time passes and the reception of the bus reset signals from all connection opposite parties is recognized. Thus, it is prevented to have an IDLE signal is received from the connection opposite party having the long cable in the state of R1, the system is moved erroneously to a tree identification phase, the bus reset signal is received from the connection opposite party after movement to the tree identification phase and the system returns again to the state of R0 in the bus initialized phase.
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公开(公告)号：JP2001119410A
公开(公告)日：2001-04-27
申请号：JP30021499
申请日：1999-10-21
Applicant: SONY CORP
Inventor： OKAWA YOSHIHIRO
IPC: H04L29/08 , H04L12/24 , H04L12/28 , H04L12/40 , H04L12/403 , H04L12/413 , H04L12/64 , H04L29/06 , H04L29/12
Abstract: PROBLEM TO BE SOLVED: To provide a processing method in a self-identification phase by which an arbitration signal of SELF-ID-GRANT sent from a master node can normally be interpreted even when a long cable is employed for the master node in the self-identification phase. SOLUTION: The processing is shifted to an initial state (S0) by confirming that the reception of RX-SELF-ID-GRANT is once finished after the reception of a SELF-ID packet is finished from a slave node. For example, in a step S2: S0a, the processing is not shifted to the initial state (S0) until the reception of the arbitration signal of RX-SELF-GRANT at a port connected to the master node is finished even when a port receiving the SELF-ID packet is idle after a port receiving the SELF-ID packet from the slave node is finished.
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公开(公告)号：JPH06337760A
公开(公告)日：1994-12-06
申请号：JP12622393
申请日：1993-05-27
Applicant: SONY CORP
Inventor： OKAWA YOSHIHIRO
Abstract: PURPOSE:To provide the optical disk device which eliminates the need to save and reload the contents of internal registers of a DSP when servo processing is performed by an interruption processing routine. CONSTITUTION:The internal registers 21-25 of the DSP 13 are divided into two; and one part which is hatched is assigned exclusively to the interruption routine for servo signal processing and the other which is indicated by transpoition is assigned exclusively for system control processing. Consequently, when a sampling interruption is initiated, servo signal processing such as focus servo signal processing and tracking servo processing is performed without the saving processing of the internal registers 21-25 and after the servo processing ends, the interruption processing routine can be ended without the reloading processing of the internal registers 21-25.
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公开(公告)号：JPH06259794A
公开(公告)日：1994-09-16
申请号：JP6612193
申请日：1993-03-02
Applicant: SONY CORP
Inventor： NISHIDA NORIO , OKAWA YOSHIHIRO
Abstract: PURPOSE:To surely attain a tracking control and focus control by preferentially processing an interruption signal having a frequency synchronized with a segment over an interruption signal having a frequency synchronized with a sector. CONSTITUTION:In the disk device 1, a discoid recording medium 2 is formed with sectors SC by dividing radially a recording area, and moreover, segments SG are formed by dividing radially each individual sector. Servo information in a unit of the segments SG is detected from a light receiving result RF in response to a generating means 14 for generating the interruption signal i1 in synchronization with the segments SG and generating the interruption signal i2 in synchronization with the sectors SG and the signal i1, and servo information in a unit of the sectors SC is detected from the reult RF in response to the signal i2, and based on both of the servo information, objects 6, 7 and 8 are controlled by a control circuit 17. The signal i1 is received preferentially to the signal i2 by the circuit 17 to control the object 8 with the 1st servo information. Thus, the tracking control and focus control can surely be performed.
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公开(公告)号：JPH0636301A
公开(公告)日：1994-02-10
申请号：JP21543492
申请日：1992-07-21
Applicant: SONY CORP
Inventor： OKAWA YOSHIHIRO
Abstract: PURPOSE:To quickly cope with abnormality by shortening the sampling period of a digitizing means in the recording/reproducing or erase mode in comparison that in the other modes. CONSTITUTION:An optical disk 1 is rotated by a spindle motor 2, and an optical heads 3 irradiates laser light to the disk 1 to not only record data but also reproduce recorded data from reflected light. A matrix circuit 4 generates a servo error signal from the optical head 3, and it is digitized with a prescribed sampling period by an A/D converter 5. An RF circuit 10 extracts an RF signal corresponding to data out of the signal outputted from the head 3, and it is decoded by a decoder 11 and is outputted to a controller 12. The controller 12 controls the access state in accordance with the error signal to switch a sampling timer 15 so that the sampling period of the converter 5 in the recording/reproducing or erase mode is shorter than that in the other modes. Thus, this device quickly copes with abnormality.
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Patent Agency Ranking
公开(公告)号：JPH01134768A
公开(公告)日：1989-05-26
申请号：JP29168687
申请日：1987-11-20
Applicant: SONY CORP
Inventor： WACHI SHIGEAKI , OKAWA YOSHIHIRO
Abstract: PURPOSE:To shorten an access time by supplying a control signal to an actuator, setting a relative speed before a track jump completion so as to get to a prescribed speed, and next, closing a tracking servo circuit, after an accelerating signal is outputted. CONSTITUTION:At the time of jumping a light beam to an aimed track, an accelerating pulse for accelerating an actuator 12 is added for a prescribed time, next, the period of a traverse signal St outputted by the movement of the actuator 12 is detected, the relative speed of the light beam to the track of an optical disk is detected 8, and the moving speed of the actuator 12 is controlled by a control signal corresponding to the relative speed. Thus, the constant relative speed at which a tracking servo is smoothly applied before the track jump completion, and the access time can be shortened.
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公开(公告)号：JP2011258277A
公开(公告)日：2011-12-22
申请号：JP2010132547
申请日：2010-06-10
Inventor： OKAWA YOSHIHIRO , SATO SHIGEHARU
IPC: G11B20/10
Abstract: PROBLEM TO BE SOLVED: To provide an information processor capable of detecting Audio Watermark (AWM) and controlling reproduction of content depending on the detected AWM without losing a user's convenience, when the content in which AWM being managed-copied in a server device is embedded is reproduced on a client device under a home network environment.SOLUTION: A content encryption/decryption part 280 reads managed-copy content from an external storage device 260 and transfers the content to a reproduction device 400 capable of decoding and reproducing. An AWM detection part 285 detects AWM which is embedded in audio data included in the content during transfer. A control part 287 determines the validity of the detected AWM. When the AWM is determined as invalid, the control part 287 instructs the content encryption/decryption part 280 to stop the content transfer.
Abstract translation: 要解决的问题：为了提供能够检测音频水印（AWM）并根据检测到的AWM控制内容的再现的信息处理器，而不失去用户的便利性，当在服务器中管理复制AWM的内容时 嵌入的设备在家庭网络环境下在客户端设备上再现。 解决方案：内容加密/解密部分280从外部存储装置260读取被管理拷贝内容，并将内容传送到能够进行解码和再现的再现装置400。 AWM检测部件285检测在传送期间嵌入在内容中的音频数据中的AWM。 控制部分287确定检测到的AWM的有效性。 当AWM被确定为无效时，控制部分287指示内容加密/解密部分280停止内容传送。 版权所有（C）2012，JPO＆INPIT
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公开(公告)号：JPH06282939A
公开(公告)日：1994-10-07
申请号：JP6834993
申请日：1993-03-26
Applicant: SONY CORP
Inventor： MUTO TAKAYASU , OKAWA YOSHIHIRO
IPC: G11B20/10
Abstract: PURPOSE:To shorten a recording time by forming previously channel clocks having frequencies corresponding to adjacent zones and outputting the channel clocks for adjacent zones without any delay at the time of moving to the zones. CONSTITUTION:These device have a channel clock forming device 2 in which frequencies of channel clocks are changed in accordance with the recording and reproducing zones on an optical disk 1. A channel clock having a frequency corresponding to a present recording and reproducing zone and a channel clock having a frequency corresponding the adjacent zone to the present recording and reproducing zone are formed. At first, a channel clock having the frequency corresponding to the present recording and reproducing zone is outputted and a channel clock having the frequency corresponding to the adjacent zone to the present recording and reproducing zone is outputted at a timing when the present zone is moved to the adjacent zone.
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公开(公告)号：JPH05101412A
公开(公告)日：1993-04-23
申请号：JP28715991
申请日：1991-10-07
Applicant: SONY CORP
Inventor： OKAWA YOSHIHIRO
Abstract: PURPOSE:To realize an accurate access at a reproducing device for the optical disk. CONSTITUTION:When an optical pick-up is moved in the radial direction of an optical disk 1 by a specified track number and an access is made to an object track, a counter 52 is provided. The track address of the optical disk 1 is continuously read during the specified period of time immediately after the instruction of a movement is started. In accordance with this read address, the count of a track number at the time of movement is corrected at the counter 52.
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公开(公告)号：JPH01140432A
公开(公告)日：1989-06-01
申请号：JP29737487
申请日：1987-11-27
Applicant: SONY CORP
Inventor： WACHI SHIGEAKI , OKAWA YOSHIHIRO
Abstract: PURPOSE:To prevent the lowering of the suppressing effect of a steady-state deviation by storing tracking error information, which corresponds to the decentering quantity of an optical disk, in the plural numbers of storing means to correspond to the sector of the optical disk and reading the tracking error information successively with address data. CONSTITUTION:The plural numbers of storing means 46-1-46-n are provided on the title device, which correspond to the number of recording areas divided in the circumferential direction of an optical disk 31. Thereafter, these plural storing means 46-1-46-n are selected by the address data added to the recording areas, and simultaneously with writing the tracking error information, the written tracking error information is read in prescribed timing and supplied to an actuator 30. Consequently, the output of erroneous tracking error information can be prevented even when the omission of the address data exists. Thus, the steady-state deviation of a tracking servo can be always compressed to zero.
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