公开(公告)号：JPH05101305A

公开(公告)日：1993-04-23

申请号：JP28552191

申请日：1991-10-07

Applicant: SONY CORP

Inventor： NITTA HAJIME

IPC: G11B5/027 ,  G11B15/087 ,  H04N5/91

Abstract: PURPOSE:To provide a method for recording copying number of times recording a signal indicating how many order of generation of a copy is copied at the time of recording in an analog HD-VTR. CONSTITUTION:An index signal read at the time of reproducing is signal processed by an index signal process circuit 18 and copying number of times information recorded on the index signal recording area of a tape is detected. An optimum value is read from a ROM 19 recording respective signal process constants and a reproducing system video signal process circuit 20 is controlled so as to signal process suitably for the detected copying number of times. The reproducing processes of the adjustment of the limitter threshold value of a noise reducer, the adjustment of a frequency characteristic and the emphasis of an edge, etc., are performed. By the reproducing processes, the degradation of S/N by repeating a copy is prevented and an image suitable for enjoying is reproduced automatically.

公开(公告)号：JPH10262219A

公开(公告)日：1998-09-29

申请号：JP6707997

申请日：1997-03-19

Applicant: SONY CORP

Inventor： NITTA HAJIME

IPC: H04N5/92 ,  G11B20/10 ,  H04N5/928

Abstract: PROBLEM TO BE SOLVED: To prevent the occurrence of silence interval by eliminating a gap generated between the frame of audio signals corresponding to video signals and the frame of the audio signals corresponding to the other video signals thereby reproducing a digital signal. SOLUTION: By eliminating an audio gap and reproducing the first audio frame A5' of the next scene SCO continuously to the last audio frame A4 of the scene SAO of audio, the occurrence of the silence interval is prevented. That is, for the point β of switching from the scene SA to the scene SC by the frame unit of the video signals, the scene SAO is to the terminating end αof the audio frame A4 for the audio signals and the first audio frame A5' of the next scene SCO is connected and reproduced at the point α. Even when the audio of the different scenes are continuously reproduced in such a manner, in the case of compressed audio signals, the non-continuity of sound on hearing sensation is hardly generated and the signals are smoothly continued.

公开(公告)号：JPH0879709A

公开(公告)日：1996-03-22

申请号：JP23452694

申请日：1994-09-05

Applicant: SONY CORP

Inventor： OOTA OKIYUKI ,  NITTA HAJIME ,  ISHII TOSHIYUKI

IPC: H04N5/92 ,  G11B20/00 ,  G11B20/10 ,  G11B27/10 ,  G11B27/30 ,  H04N5/781 ,  H04N5/85 ,  H04N5/93 ,  H04N5/937 ,  H04N9/804 ,  H04N9/877 ,  H04N19/00 ,  H04N19/423 ,  H04N19/44 ,  H04N19/46 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04N7/24

Abstract: PURPOSE: To shorten recovery time or from error generation. CONSTITUTION: For data read from a data supply means 1, sector information is detected in a sector information detection means 2 and sent to a control means 3. Based on the sector information, write for which a sector is a unit is performed in a storage means 4 and the required data are read from the storage means 4 with the sector as the unit and supplied to a distribution means 5. In the distribution means 5, a packet start code is detected, a stream ID is detected and the data distributed based on the stream ID are supplied to a decoder 6. Since the packet start code is at the breakoff position of the sector, when the code can not be detected due to an error, the distribution means 5 and the decoder 6 are synchronized by sector synchronization.

公开(公告)号：JPH07182720A

公开(公告)日：1995-07-21

申请号：JP34482593

申请日：1993-12-20

Applicant: SONY CORP

Inventor： NITTA HAJIME

IPC: G11B20/12 ,  G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To prevent the formation of an unnecessary link sector on a disk in the disk recording/reproducing device. CONSTITUTION:Data inputted via an interface l is supplied to a packing circuit 31 and a synchronizing signal is supplied to a synchronization detector 2. When the synchronizing signal is detected by the synchronization detector 2, the detected output is supplied to a linking sector position detecting circuit 33. In the linking sector detecting circuit 33, what data the synchronizing signal is inputted for is detected. Also, how many sectors of data on a disk format the amount of data is equivalent to is calculated and based on this calculated value, data is divided for each sector. A link sector outputted from a link sector generating circuit is added to data outputted from the packing circuit 31.

公开(公告)号：JPH06162591A

公开(公告)日：1994-06-10

申请号：JP30402992

申请日：1992-11-13

Applicant: SONY CORP

Inventor： SAITO TAKEHIKO ,  NITTA HAJIME

IPC: G11B7/00 ,  G11B7/0045 ,  G11B7/125 ,  G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To improve a C/N and to perform superior recording in the case of magneto-optical recording. CONSTITUTION:Input data are supplied through an input terminal 1 to an encoder 2 and converted to a prescribed information to be recorded. The signals of the information are supplied to a pulse train generating circuit 3, a prescribed pulse train is generated, and the pulse train is supplied to a control circuit 4 of a laser diode. The signals from the control circuit 4 are supplied to an optical head 5, and laser light to irradiate a disk 6 is modulated. On the other hand, a driving control circuit 7 composed of a microcomputer is provided, and signals from the driving control circuit 7 are supplied to the control circuit 4. Further, signals from the driving control circuit 7 are supplied to a driving circuit 8, and signals from the driving circuit 8 are supplied to a head 9 for bias magnetic field generation provided on the opposite side of the disk 6. Then, signals from the driving control circuit 7 are supplied to a servo circuit 10, and a spindle motor 11 for rotation driving use of the optical head 5 and the disk 6 is controlled.

公开(公告)号：JPH05101620A

公开(公告)日：1993-04-23

申请号：JP28552291

申请日：1991-10-07

Applicant: SONY CORP

Inventor： NITTA HAJIME

IPC: G11B27/28 ,  G11B5/86 ,  G11B27/024 ,  G11B27/028 ,  G11B27/30 ,  H04N5/782 ,  H04N5/7826 ,  H04N5/91 ,  H04N9/82

Abstract: PURPOSE:To provide a system by which contents contained in index information is selectively copied in other VTR at the time of dubbing, in a VTR having a recording area for index information. CONSTITUTION:On a transmitting side (reproducing side) T, index information is taken in by an audio index processor 2, superimposed in the area of the vertical blanking period of the video signal from a video signal processing circuit 1 in an index signal superimposed circuit 4 and transmitted. On a receiving side (recording side) R, the index information is taken out from the received video signals by an index detecting circuit 5, taken in by the audio index processor 8 to allocate in an index area and record the index information in accordance with the video signal from the video signal processing circuit.

公开(公告)号：JPH05101532A

公开(公告)日：1993-04-23

申请号：JP28552391

申请日：1991-10-07

Applicant: SONY CORP

Inventor： NITTA HAJIME

IPC: G11B15/02 ,  G11B20/02 ,  H04N5/937

Abstract: PURPOSE:To provide a noise reducer improving S/N even at the time of reproducing a dubbed tape. CONSTITUTION:The copy number of times indicating how many order of generation of dubbing recorded on the index signal recording area of a tape patter-n is detected by a copy signal detecting circuit 23 at the time of reproducing. A ROM address selecting signal is sent to a ROM in accordance with the detected copy number of times, and the optimum value of the limitter threshold value of the noise reducer 21 using a correlation between frames is read from the ROM table 24 for the limitter and a noise reduction is performed. The noise reduction is adjusted automatically so that the more the dubbed tape has a degraded S/N the more the limitter threshold value of the noise reducer is large.

公开(公告)号：JP2002051288A

公开(公告)日：2002-02-15

申请号：JP2000232362

申请日：2000-07-31

Applicant: SONY CORP

Inventor： SATO TOMOYUKI ,  OBATA YOSHIFUMI ,  NITTA HAJIME ,  OTA OKIYUKI

IPC: H04N5/765 ,  G11B20/10 ,  H04N5/781 ,  H04N5/92

Abstract: PROBLEM TO BE SOLVED: To provide a recording and reproducing device that efficiently uses memory areas so as to record/reproduce a signal. SOLUTION: A memory arbitration section 61 allocates required areas in a memory 62 depending on a state when data are written in an HDD 16 and data are read from the HDD 16. For example, only when read of data from the HDD 16 is instructed, the memory arbitration section 61 reserves all the capacity of the memory 62 for areas to once store read data.

公开(公告)号：JP2002010254A

公开(公告)日：2002-01-11

申请号：JP2000185386

申请日：2000-06-20

Applicant: SONY CORP

Inventor： TAKESHITA JUN ,  NITTA HAJIME ,  SATO TOMOYUKI ,  KONO MAKOTO

IPC: H04N5/765 ,  H04N5/781 ,  H04N5/92 ,  H04N5/93 ,  H04N5/937 ,  H04N7/24 ,  H04N19/00 ,  H04N19/105 ,  H04N19/142 ,  H04N19/15 ,  H04N19/177 ,  H04N19/196 ,  H04N19/423 ,  H04N19/46 ,  H04N19/70 ,  H04N19/87

Abstract: PROBLEM TO BE SOLVED: To make it possible to detect scene change points directly from coded visual signals without decoding coded visual data, thus reducing the amount of operation for detecting scene change points. SOLUTION: Coded video and sound data from external equipment are converted to TS in a digital interface circuit 90, and PES is extracted from the TS in a separation circuit 42, and scene change point is detected by a feature point detection part 100. In the feature point detection part 100, appearance period of I picture is detected, and if it becomes shorter than a predetermined period, then the I picture is set as a scene change point. If the data length of P picture or B picture becomes longer than threshold values LthP or LthB which are the result obtained by multiplying the coefficient by the mean value of P picture or B picture data length in the closest past plural frames stored in a memory 104, then the P picture or the B picture at that point is set as a scene change point.

公开(公告)号：JP2001339685A

公开(公告)日：2001-12-07

申请号：JP2000157857

申请日：2000-05-29

Applicant: SONY CORP

Inventor： HONDA TAKESHI ,  NITTA HAJIME ,  SATO TOMOYUKI ,  TAKESHITA JUN

IPC: H04N5/78 ,  G11B20/10 ,  G11B27/00 ,  G11B27/10 ,  H04J3/00 ,  H04N5/765 ,  H04N5/781 ,  H04N5/91 ,  H04N5/92 ,  H04N19/48 ,  H04N19/50 ,  H04N19/503 ,  H04N19/61 ,  H04N19/625 ,  H04N19/70 ,  H04N19/87 ,  H04N7/32

Abstract: PROBLEM TO BE SOLVED: To allow effectively utilizing a function for detecting feature point of an images processing apparatus such as a recording/reproduction apparatus in the outside device of the image processing apparatus and to allow realizing simplification and cost reduction of a system. SOLUTION: Video signal and voice signal sent from a ground wave tuner 21 or the input terminals 11V, 11S and 11A are processed in a input processing section 20, and a multiplexing/separating processing section 40 are supplied with an image ES(elementary stream) and a voice ES from a MPEG image encoder 27 and a MPEG(moving picture experts group) voice encoder 29. In the multiplexing/separating processing section 40, the feature point of the image is detected from this image ES and voice ES through a detector of feature point 41, and PTS(presentation time stamp) which indicates the picture of the feature point as feature point information is multiplexed to the image ES and voice ES and MPEG/TS(transport stream) is generated through a multiplexing circuit 42. MPEG/TS that the feature point information was multiplexed are recorded on a HDD(hard disk device) 60 and reproduced from the HDD 60 or outputted to an outside device 110 through a digital interface circuit 90 without being recorded on the HDD 60.