公开(公告)号：JPH10285241A

公开(公告)日：1998-10-23

申请号：JP8313697

申请日：1997-04-01

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G06F13/00 ,  H04L12/28 ,  H04L12/40 ,  H04L12/64 ,  H04L12/70 ,  H04L29/08 ,  H04N7/24 ,  H04N21/2381 ,  H04N21/4363 ,  H04N21/438 ,  H04L12/56

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing circuit that inserts a control packet to a conventional transport stream and transmits it. SOLUTION: A processing circuit is provided with a control packet FIFO as a storage device for an asynchronous communication system, a CPU 30 sets control data optionally and a transmission pre-processing circuit 106 and a transmission post-processing circuit 107 insert a control packet into a conventional MPEG transport stream under the control of the CPU 30. Thus, the control packet is transmitted optionally as an isochronous packet in addition of a packet consisting of a conventional transport stream.

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.

公开(公告)号：JPH06251505A

公开(公告)日：1994-09-09

申请号：JP6333993

申请日：1993-02-27

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B20/10

Abstract: PURPOSE:To accurately detect a servo pattern depending on cases. CONSTITUTION:These device are provided with a first coincidence detector 41 for detecting a coincidence between the reproducing data of a servo pattern made parallel at a shift register 40 and a regular servo pattern, a second coincidence detector 42 of detecting a coincidence between the reproducing data and a first pseudo servo pattern shifted one bit from the regular servo pattern and third and fourth coincidence detectors 43 and 44. Depending on the cases of time before or after the phase lead-in of servo pattern detective data, the time of seeking, and the time of non-seeking, etc., the different detective patterns of the coincidence detectors 41 to 44 are used properly.

公开(公告)号：JPH03201272A

公开(公告)日：1991-09-03

申请号：JP33652889

申请日：1989-12-27

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: G11B21/08

Abstract: PURPOSE:To automatically adjust the seek time to standards by changing the detection gain of a speed detecting means, which detects the movement speed of a magnetic head, to change the actual movement speed of the magnetic head. CONSTITUTION:A head arm 2 is used as the magnetic head driving means which drives a magnetic head 4 in the disk diametrical direction. The speed detecting means which detects the movement speed of the magnetic head 4 and is freely varied the detection gain consists of a head position detecting sensor 6, amplifying circuits 16 to 18, 27, and 28, capacitors 25 and 26, inverting amplifying circuits 29 and 30, comparing circuits 21 and 22, a multiplexing circuit 20, and a gain control circuit 33. The error between a speed profile output and the output of the magnetic head movement speed detecting means whose detection gain is freely varied is detected to seek a prescribed number of tracks by the magnetic head 4, and the detection gain of the movement speed detecting means of the magnetic head 4 is so adjusted that the seek time at this time satisfies standards. Thus, the seek time is automatically adjusted.

公开(公告)号：JPH01220274A

公开(公告)日：1989-09-01

申请号：JP4659288

申请日：1988-02-29

Applicant: SONY CORP

Inventor： MUTO TAKAYASU ,  FUJINAWA AKIRA ,  YAEGASHI AKIRA ,  NAKANO KATSUHIRO ,  TADA HARUTAKA ,  IKEDA KATSUMI

IPC: G11B21/10

Abstract: PURPOSE:To perform tracking control with high accuracy by performing the tracking control of a magnetic head on a recording track formed on each disk surface corresponding to the correction quantity of reference tracking. CONSTITUTION:Magnetic head position detecting means 6 and (15-19) which output the position detection signal SP of the magnetic heads (4A-4D), and a magnetic disk 3 on whose disk surfaces (3A-3D) servo tracks are formed are provided. Reference tracking correction quantity detecting means 4A-4D, 35, 40, 41, 43, 44, 48, 49, 50, and 51 to perform the positioning of the magnetic heads (4A-4D) on the servo tracks based on the position detection signal SP and to detect the correction quantity of the reference tracking at every disk surfaces (3A-3D) are provided. The tracking control of the magnetic heads (4A-4D) are performed on the recording tracks formed on the disk surfaces (3A-3D) corresponding to the correction quantity of the reference tracking. In such a way, it is possible to prevent a tracking error from being generated, and to perform the tracking control with high accuracy.

公开(公告)号：JPS6364681A

公开(公告)日：1988-03-23

申请号：JP20995486

申请日：1986-09-05

Applicant: SONY CORP

Inventor： HOSHIMI SUSUMU ,  MUTO TAKAYASU

IPC: G11B21/08 ,  G11B19/04 ,  G11B21/10

Abstract: PURPOSE:To simplify a device and to improve accuracy in terms of deciding the timing of controlling and switching, and a predetermined position by permitting a control part to digitally decide the occurrence of reference speed information, switching from a speed control to a position control and whether a magnetic head stays on a target or not. CONSTITUTION:According to moving instructions from the magnetic head 20, a CPU 70 converts 81 the reference speed information Drv to take for Vrv, amplifies the difference between plural Vs obtained by converting 63 outputs Vs from a position detection means 50 from frequency to voltage, changes over a switch 84 wit the aid of a control switching signal VP, drives a head motor 41, controls the moving speed of the head 20 and attains Vf = Vrv. The CPU 70 counts pulses Ps formed 62 from the position signals Vs, decreases Drv every track, calculates a distance up to the target from a signal Ds obtained by converting 61 the Vs and outputs Drp. The Vrp is converted 81 to amplify 83 the difference between plural Vs, and a phase is corrected 85 to attain Vs = Vrp. When the distance is less than the one pitch of a track, the switch 84 is changed over with the aid of the signal VP to control the position. If the drift lies within a permissible value in a prescribed time, a write control signal WC is outputted to permit writing on a disk. With this constitution, the device is simplified and accuracy in terms of positioning is improved.

公开(公告)号：JPS6356885A

公开(公告)日：1988-03-11

申请号：JP20114086

申请日：1986-08-27

Applicant: SONY CORP

Inventor： HOSHIMI SUSUMU ,  MUTO TAKAYASU

IPC: G11B21/10

Abstract: PURPOSE:To contrive the shortening of the moving time of a head by correcting an offset quantity stored in advance at head moving so as to apply just track, thereby eliminating the time to read a servo signal. CONSTITUTION:A magnetic disk 1 is split into plural data areas Z1-Zn and plural reference servo tracks TRA-TRD corresponding to the periodicity of the output signal of head position detection means 2, 5 are provided at every data area as a circumference. Then a difference between the position of the magnetic head when the output of a head position detection means is zero and the position positioned by the servo signal is stored in the memory of a microprocessor 8 for every data area. In moving the magnetic head for read/ write, after the magnetic head is positioned to make the output zero by the head position detection means, the magnetic head is shifted by the offset stored in the memory to apply just track.

公开(公告)号：JPS61147798A

公开(公告)日：1986-07-05

申请号：JP26598484

申请日：1984-12-17

Applicant: SONY CORP

Inventor： MUTO TAKAYASU

IPC: H02P8/18 ,  H02P8/32

Abstract: PURPOSE:To eliminate the resonance of a machine system of a stepping motor by driving to switch a switching element of a coil current drive in the prescribed frequency sufficiently higher than the maximum responding frequency of the motor. CONSTITUTION:A frequency fc such as a clock pulse of very high speed of MHz order is supplied to a clock input terminal 1, and the high speed pulse is fed to an modulo-n counter 2. A digital comparator 3 compares the duty designation data DD with counted output data CD in the magnitude, outputs a pulse signal in response to the magnitude to a data selector 5. The frequency fp of the pulse signal is set to fc and n to become sufficiently higher than the maximum responding frequency of the motor. A data selector 5 supplies a PWM pulse signal from the comparator 3 through output terminals (a), (b) to switching transistor for controlling the drive current of the coils of different phases of stepping motor.

公开(公告)号：JP2007151136A

公开(公告)日：2007-06-14

申请号：JP2006327500

申请日：2006-12-04

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SATO SADAJI ,  AOKI TETSUYA ,  MUTO TAKAYASU

IPC: H04L12/40 ,  G06F13/38 ,  H04L12/28 ,  H04L29/08 ,  H04N7/173 ,  H04N19/00 ,  H04N19/65 ,  H04N19/70 ,  H04N21/435 ,  H04N21/436

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing circuit capable of preventing a data loss or unwanted data from being output to an application side even when time information to be set in accordance with a data amount is changed. SOLUTION: When a data read control signal S1063 is actively received by a processing circuit 107 after transmission, it is decided that a data amount is increased to change into a short delay time, a read pointer is matched with a write pointer indicated by a storage information signal S106 and a new transmission packet with the data amount increased is read from a FIFO 110. Data to which a time stamp based on a delay time set before the increase in the data amount is added are reset and 1394 header, CIP header 1, 2 are added to the read packet to be output to the transmission circuit of a link core 111. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：即使当要根据数据量设置的时间信息改变时，提供能够防止数据丢失或不需要的数据被输出到应用侧的信号处理电路。 解决方案：当数据读取控制信号S1063在传输之后由处理电路107主动地接收时，确定数据量增加以变成短的延迟时间，读指针与指示的写指针相匹配 通过存储信息信号S106和从FIFO110读出数据量增加的新的发送分组被复位，并且添加了基于在数据量增加之前设置的延迟时间的时间戳的数据，并且1394报头， 将CIP标题1,2添加到读取的包中以输出到链接核心111的传输电路。（C）版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007060728A

公开(公告)日：2007-03-08

申请号：JP2006327498

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 ,  H04L12/28

Abstract: PROBLEM TO BE SOLVED: To provide a signal processing circuit capable of automatically performing late processing of the transmission and achieving accurate packet transmission. SOLUTION: A pre-reception processing circuit 108B outputs a stored information signal S108, which indicates that the received data has been stored in a FIFO 110, to a post-reception processing circuit 109B each time writing a packet and that the post-reception processing circuit 109B compares a time stamp data TS added to the received packet with a cycle time CT from an inner cycle counter and outputs the received data stored in the FIFO 110 when the cycle time CT is larger than the time stamp data TS (CT>TS). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供能够自动执行传输的后期处理并实现精确的分组传输的信号处理电路。 解决方案：预接收处理电路108B每当写入分组时，将表示接收到的数据已经存储在FIFO110中的存储的信息信号S108输出到后接收处理电路109B， 接收处理电路109B将添加到接收到的分组的时间戳数据TS与来自内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，输出存储在FIFO 110中的接收数据 CT> TS）。 版权所有（C）2007，JPO＆INPIT