公开(公告)号：JPS6361477A

公开(公告)日：1988-03-17

申请号：JP20571386

申请日：1986-09-01

Applicant: SONY CORP

Inventor： HOSHIMI SUSUMU ,  MUTO TAKAYASU

IPC: G11B21/10

Abstract: PURPOSE:To shorten the moving time of a magnetic head and to realize a tracking of high accuracy by correcting the quantity of an offtrack relating to a reference servo track based on the inclination of the quantity of the offtrack at respective temperatures stored previously. CONSTITUTION:The reference servo track is disposed in the data area of a magnetic disk 1 and the quantity of the offtrack is stored in a microprocessor 8 with a relation to the reference servo track. The inclination of the quantity of the offtrack to the track at the respective temperatures is stored in the processor 8. The temperature detected in a temperature sensor 20 is fed to the processor 8, the quantity of the offtrack in an object track is calculated based on the inclination of the inclination of the quantity of a corresponding offtrack and the magnetic head 3 is moved, thereafter, the magnetic head 3 is finely moved by the quantity of the offtrack corrected from a position positioned at the zero cross point of an optical sensor 2 to just track.

公开(公告)号：JPS6355787A

公开(公告)日：1988-03-10

申请号：JP19857386

申请日：1986-08-25

Applicant: SONY CORP

Inventor： HOSHIMI SUSUMU ,  MUTO TAKAYASU

IPC: G11B21/10 ,  G11B5/55

Abstract: PURPOSE:To correct position of a magnetic head in a short time by correcting position of the magnetic head by position control information of the disk by difference voltage corresponding to estimated quantity of off-track from an objective track stored in a memory. CONSTITUTION:When shifting a magnetic head 30 to an objective track T of a magnetic disk 10, a control section 90 controls the speed of the head 30 through a motor driving circuit 60, and controls the position to an objective representative track in areas A1-A5 of the disk 10, and positions to make output voltage of a position detecting means 70 the central value of the track. Then, difference voltage corresponding to estimated quantity of off-track from an objective track in a area stored in a memory 91 is read out, and position of the head 30 is corrected by the difference voltage. Then, position control information of the disk 10 read from the head 30 by a position control information detecting circuit 80 is taken in, and position of the head 30 is corrected accurately on the objective track by the information. The difference of output voltage of the means 70 at this time and output voltage at the center of track is written in the memory 91 as new quantity of off-track.

公开(公告)号：JP2007097220A

公开(公告)日：2007-04-12

申请号：JP2006328220

申请日：2006-12-05

Applicant: Sony Corp ,  ソニー株式会社

Inventor： URAMOTO YOICHI ,  MUTO TAKAYASU ,  TANAKA KATSUYUKI

IPC: H04B1/707 ,  G01S19/24 ,  G01S19/37 ,  H04B1/7077 ,  H04B1/7093

Abstract: PROBLEM TO BE SOLVED: To more speedily and accurately search synchronism establishment regarding a positioning satellite signal. SOLUTION: This receiver comprises a high-speed mode and a high-sensitivity mode. During the high-speed mode, a practical phase change width of a receiving-side spreading code is great when establishing synchronism for a spreading code of a received signal by detecting a correlation between the spreading code of the received signal from a satellite and the receiving-side spreading code while practically changing a phase of the receiving-side spreading code. During the high-sensitivity mode, the practical phase change width is small. A mode switching operation means is provided for accepting a switching selection operation of the high-speed mode and the high-sensitivity mode. A synchronism establishing means carries out the establishment of synchronism by setting a mode that has been switched by the mode switching operation means as a present mode. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：更快速和准确地搜索关于定位卫星信号的同步建立。

解决方案：该接收机包括高速模式和高灵敏度模式。 在高速模式中，通过检测来自卫星的接收信号的扩展码与接收信号之间的相关性，在接收信号的扩展码建立同步时，接收侧扩展码的实际相位变化幅度很大 同时实际​​改变接收侧扩展码的相位。 在高灵敏度模式下，实际相变宽度小。 提供了一种模式切换操作装置，用于接受高速模式和高灵敏度模式的切换选择操作。 同步建立装置通过将通过模式切换操作装置切换的模式设置为当前模式来执行同步建立。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007074756A

公开(公告)日：2007-03-22

申请号：JP2006327499

申请日：2006-12-04

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SATO SADAJI ,  AOKI TETSUYA ,  MUTO TAKAYASU

IPC: H04L29/10

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing circuit capable of achieving speedy data outputitng by immediately outputting reception data regardless of time information added to a reception packet.
SOLUTION: Data TS of a time stamp added to a received packet are compared with a cycle time CT of an internal cycle counter and when the cycle time CT is greater than the time stamp data TS, reception data stored in a FIFO 110 are outputted to an application side. In addition, a flag of time stamp disable is set from a CPU 30 to a CFR 111, and the reception data received and stored in the FIFO are immediately outputted to an application side regardless of a value of the time stamp.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够通过立即输出接收数据来实现快速数据输出的信号处理电路，而不管添加到接收分组的时间信息如何。 解决方案：将附加到接收到的分组的时间戳的数据TS与内部周期计数器的周期时间CT进行比较，并且当周期时间CT大于时间戳数据TS时，存储在FIFO 110中的接收数据 被输出到应用侧。 此外，从CPU30到CFR111设置时间戳禁用的标志，并且接收并存储在FIFO中的接收数据被立即输出到应用侧，而与时间戳的值无关。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JPH10336266A

公开(公告)日：1998-12-18

申请号：JP5713498

申请日：1998-03-09

Applicant: SONY CORP

Inventor： SATO SADAJI ,  AOKI TETSUYA ,  MUTO TAKAYASU

IPC: G06F13/00 ,  H04L29/08

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing circuit by which an error bit is set simply without incurring an increased circuit scale even when a packet size is variable and a system is not down even when a time stamp value not in existence is produced so as to realize a stable operation. SOLUTION: A reception pre-processing circuit 108 discriminates whether the received packets are consecutive normal packets or discontinuous packets, based on data in a data block continuity counter(DBC) area of a common isochronous packet CIP header 1. In the case that the circuit 108 discriminates that the packets are discontinuous packets, an error bit ERM assigned to one bit, e.g. a bit 30, in high-order 7 bits of a source packet header is set to '1' and the resulting data are written in a first-in first-out FIFO 110. In the case of reading the FIFO 110 by a reception postprocessing circuit 109, when the error bit ERM is set to '0', the data stored in the FIFO data are outputted to an application side, and when the error bit ERM is set to '1', the error bit is reset and a dummy error packet is outputted.

公开(公告)号：JPH0721695A

公开(公告)日：1995-01-24

申请号：JP18335993

申请日：1993-06-30

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B20/10 ,  G11B20/14

Abstract: PURPOSE:To amplify a pure signal component (a phase error detecting signal only) and to reduce an adverse effect of noise due to a disturbance even when this noise is superimposed over a phase error detecting signal in moving an optical system at the seek time by amplifying the phase error detecting signal with a gain higher than a usual gain at the seek time. CONSTITUTION:A phase error of a channel clock for a regenerative signal of a servo pattern recorded in advance on a magneto-optical disk 1 is detected by a phase data forming circuit 21, and a 1st VCO (voltage changeable oscillator) 32 is driven to form the channel clock by this phase error detecting signal. The magneto-optical disk recording and reproducing device is constituted in the phase locked loop, and at the seek time, the gain of a variable amplifier circuit 40 for amplifying the phase error detecting signal is controlled to be set higher than the usual gain via a gain setting register 41 by a processor 46.

公开(公告)号：JPH06243588A

公开(公告)日：1994-09-02

申请号：JP3097893

申请日：1993-02-19

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B20/10 ,  G11B20/14

Abstract: PURPOSE:To accurately record and reproduce recording data by recording and reproducing with a channel clock coinciding with a recording and reproduc ing position. CONSTITUTION:A servo pattern recorded on a magneto-optical disk 1 is detected, a first VCO 35 outputting a basic clock is driven so that the phase error of the basic clock for the servo pattern detection data becomes zero. The basic clock from the first VCO 35 is varied to a frequency V according to the recording and reproducing position. Further, the channel clock is formed by adjusting the phase to the phase of a synchronism adjustment timing pulse coinciding with the recording and reproducing position outputted from a timing generator 29, and the recording and reproducing is performed by the channel clock.

公开(公告)号：JPH06243587A

公开(公告)日：1994-09-02

申请号：JP3097793

申请日：1993-02-19

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B20/10

Abstract: PURPOSE:To shorten a phase drawing time by supplying an error signal obtained by comparing the phase of a channel clock outputted from a VCO with that of a reference clock to the VCO with a changeover switch at the time of draw ing the phase of the reproducing data of a servo pattern. CONSTITUTION:A servo pattern and recording data recorded on a magnetic disk 1 are reproduced by an optical system 9 and supplied to a channel (Ch) clock forming device 2 and a demodulation circuit 11 through an R/W amplifier 10. A reference (Rf) clock with the same frequency as the Ch clock to be outputted by the VCO essentially is outputted by a generation circuit 32 at the time of drawing the phase of the reproducing data of the servo pattern. The phase error signal obtained by comparing the phases of the Ch and Rf clocks with a phase comparator circuit 31 is switched by a switch 30 with the output signal of a lock/unlock detection circuit 27 to supply to the VCO 35. Thus, even when the Ch clock is shifted large, it is corrected to a prescribed frequency and the phase drawing time is shortened.

公开(公告)号：JPH06236628A

公开(公告)日：1994-08-23

申请号：JP2454293

申请日：1993-02-12

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B20/10 ,  G11B20/12

Abstract: PURPOSE:To expand a lock range. CONSTITUTION:The phase error of a channel lock to servo pattern detection data is detected in a lock/unlock detecting circuit 27 and a VCO 35 is driven by the phase error detection data formed by a phase forming device 23 if the phase error is small. Whether the phase error is positive or negative is detected by this lock/unlock detecting circuit 27 if the phase error is large. The VCO 35 is driven by the phase error data of the positive full-range outputted from a positive phase difference output device 30 in place of the phase error detection data formed by the phase forming device 23 if the phase error is the positive phase error. The VCO 35 is driven by the phase error data of the negative full-range outputted from a negative phase difference output device 31 in place of the phase error detection data formed by the phase forming device 23 if the phase error is the negative phase error.

公开(公告)号：JPH05114253A

公开(公告)日：1993-05-07

申请号：JP30233091

申请日：1991-10-22

Applicant: SONY CORP

Inventor： MUTO TAKAYASU ,  SUZUKI YASUAKI

IPC: G11B20/18 ,  G11B21/10

Abstract: PURPOSE:To suppress the influence of disturbance caused by a lack of patterns when servo control is performed on a sector by confirming that two fine patterns are erased from a sector servo pattern. CONSTITUTION:In a head position detecting section 13, a detecting and rectifying section 135 constituted of an envelope detection circuit 21 and integration circuit 22 supplies the output signal of the section 13 to a DSP 15 through an A/D converter 135, positional information generation circuit 137, and DSP bus by detecting and rectifying the first and second burst signals of a fine pattern. The DSP 15 detects an error by comparing the level of the output signal with the level of a specific value.