公开(公告)号：JPH05328201A

公开(公告)日：1993-12-10

申请号：JP14682792

申请日：1992-05-14

Applicant: SONY CORP

Inventor： KONDO TETSUJIRO ,  FUJIMORI YASUHIRO ,  UCHIDA MASASHI ,  HASHINO TSUKASA

IPC: G03B17/00 ,  G03B5/00 ,  G06T7/20 ,  H04N5/232

Abstract: PURPOSE:To provide the correction device for camera shake of a picture in which correction processing is ensured by discriminating whether a detected motion vector is a motion vector of a picture due to a camera shake or a motion vector due to an intended camera operation such as panning or tilt. CONSTITUTION:Motion vectors of a picture detected by a motion vector detection section 10 are stored in a vector memory 20 over lots of fields, and a discrimination section 30 discriminates whether or not a motion vector is due to a camera shake based on the history of the motion vector, a correction signal generating section 40 generates the camera shake correction signal of the correction quantity in response to the motion vector due to the camera shake and a correction section 50 applied camera shake correction processing to an input video signal.

公开(公告)号：JPH05137050A

公开(公告)日：1993-06-01

申请号：JP32673291

申请日：1991-11-15

Applicant: SONY CORP

Inventor： KONDO TETSUJIRO ,  FUJIMORI YASUHIRO ,  UCHIDA MASASHI ,  HORISHI MASARU ,  HASHINO TSUKASA

IPC: H04N5/232 ,  G03B5/00 ,  G06T7/20

Abstract: PURPOSE:To correct the camera jiggle with high accuracy by deciding whether a motion vector is caused by the camera jiggle or not based on the output of an activity deciding means as well as the correlation of the image data on the key point picture elements of each of blocks divided from an image covering a single field. CONSTITUTION:A key point memory 31 stores the image data on the key point picture elements of each of blocks divided from the picture elements equivalent to a single field. The field differential absolute value obtained as the subtraction data on a subtractor circuit 12 is supplied to a correlative integration value table production circuit 13. A motion vector detector circuit 14 detects the minimum value coordinates of the correlative integration value table produced by the circuit 13 and supplies the coordinates to a camera jiggle deciding circuit 30 and a correction value generating part 40. A deciding circuit of the part 30 detects a static block candidate having a key point picture element of the deep correlation and performs the static decision. The part 40 produces a camera shake correction signal and supplies it to a correction part 50 after deciding that the motion vector is caused by the camera jiggle detected by a detection part 10.

公开(公告)号：JPH05122584A

公开(公告)日：1993-05-18

申请号：JP30397491

申请日：1991-10-23

Applicant: SONY CORP

Inventor： KONDO TETSUJIRO ,  FUJIMORI YASUHIRO ,  UCHIDA MASASHI ,  HORISHI MASARU ,  HASHINO TSUKASA

IPC: H04N5/232

Abstract: PURPOSE:To surely correct blurring by judging whether the motion vector of an image is caused by blurring or not. CONSTITUTION:At a motion vector detection part 10, the motion vector of the image is interpolated and estimated by a motion vector estimating circuit 14 and corresponding to this motion vector, the blurring correcting signal of a correcting amount is generated by a correcting amount generation part 30. Then, a correction part 40 executes blurring correction to the input video signal. When the motion vector of the image estimated by the motion vector estimating circuit 14 is not caused by blurring, a blurring judgement part 20 switches the motion vector to a zero vector.

公开(公告)号：JP2001285769A

公开(公告)日：2001-10-12

申请号：JP2000093896

申请日：2000-03-30

Applicant: SONY CORP

Inventor： TESHIROGI HIDEHIKO ,  NAKAMATSU KEITA ,  YAMAMURA TAKAYA ,  KOTANI YASUTAKA ,  ABE FUMIYOSHI ,  HASHINO TSUKASA

IPC: H04N5/7826 ,  G10L19/00 ,  G10L19/02 ,  G11B5/008 ,  G11B5/09 ,  G11B20/10 ,  G11B20/12 ,  G11B20/14 ,  G11B20/18 ,  G11B27/30 ,  H04N5/91 ,  H04N5/92 ,  H04N5/928 ,  H04N9/79 ,  H04N9/804 ,  H04N9/806 ,  H04N9/82

Abstract: PROBLEM TO BE SOLVED: To compress and record HD video signals and HD sound signals. SOLUTION: Three pictures are made to one unit and the pictures and sound data corresponding to them are gathered and recorded on a magnetic tape. For instance, an I picture In+2, a B picture Bn and the B picture n+1 and the sound data An+2, the sound data An and the sound data An+1 corresponding to them are gathered and recorded. Thus, the video rate of about 28 Mbps is secured.

公开(公告)号：JPH10200921A

公开(公告)日：1998-07-31

申请号：JP337697

申请日：1997-01-10

Applicant: SONY CORP

Inventor： NAGASAWA FUMIHIRO ,  MORITAKE YUTAKA ,  HASHINO TSUKASA

IPC: H04N9/804 ,  H03M7/30 ,  H04N9/808 ,  H04N11/04

Abstract: PROBLEM TO BE SOLVED: To provide the digital data transmission method, the data recording and reproducing device and the data edit device which have compatibility among video data whose compression format differs from each other. SOLUTION: A luminance signal Y of a video signal received from an input terminal 110 and a chrominance signal C of a video signal received from an input terminal 120 are added and compression-coded and compression video data (base data) of 4:1:1 are generated. Furthermore, the received video signal is up-converted and a compression video signal of 4:2:2 is generated, and a subtractor circuit 123 subtracts the compression video signal from the base data. The difference is compression-coded to generate enhancement data. In the case of sending the video data of 4:1:1, only the base data are sent and in the case of sending the video data of 4:2:2, the base data with the enhancement data added thereto are transmitted.

公开(公告)号：JPH06350992A

公开(公告)日：1994-12-22

申请号：JP13754993

申请日：1993-06-08

Applicant: SONY CORP

Inventor： HASHINO TSUKASA

IPC: H03M7/30 ,  G06T9/00 ,  H04N1/41 ,  H04N19/126 ,  H04N19/136 ,  H04N19/14 ,  H04N19/152 ,  H04N19/18 ,  H04N19/196 ,  H04N19/423 ,  H04N19/60 ,  H04N19/625 ,  H04N19/80 ,  H04N19/85 ,  H04N7/133 ,  G06F15/66

Abstract: PURPOSE:To improve the picture quality degradation of pictures in which an edge part and a flat part coexist by controlling activity so as to be small by activity control signals and making a qunatization step width small. CONSTITUTION:DCT coefficients from a DCT(discrete cosine transformation) circuit 2 are supplied to an acitivity judging circuit 9, a maximum AC coefficient within a unit DCT transformation block is calculated and the activity in the DCT transformation block is obtained. Also, input picture information is supplied to a picture block judging circuit 20, a spatial gradient in a picture block is obtained and the activity is controlled corresponding to the size. Since the spatial gradient indicates the sharpness of the edge part, the pictures in which the sharp edge part and the flat part exist can be recognized when the spatial gradient is large. In such time, the activity is controlled so as to be small, the quantization step width becomes narrow, the picture block is finely quantized and the picture quality degration accompanying coarse quantization can be improved.

公开(公告)号：JPH06169453A

公开(公告)日：1994-06-14

申请号：JP34141392

申请日：1992-11-27

Applicant: SONY CORP

Inventor： HASHINO TSUKASA

IPC: H04N19/50 ,  G06T9/00 ,  H03M7/30 ,  H03M7/36 ,  H03M7/40 ,  H04N19/103 ,  H04N19/105 ,  H04N19/139 ,  H04N19/166 ,  H04N19/423 ,  H04N19/46 ,  H04N19/463 ,  H04N19/503 ,  H04N19/517 ,  H04N19/53 ,  H04N19/59 ,  H04N19/61 ,  H04N19/625 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04N19/895 ,  H04N19/93 ,  H04N7/137 ,  G06F15/66

Abstract: PURPOSE:To suppress an error storage in a time axial direction by compressing and encoding an inter-frame moving vector, inter-plural frame moving vector, and compressed and encoded difference data. CONSTITUTION:A picture data encoder 1 is equipped with a frame memory 22 which applies a time delay for one frame to picture data stored in a frame memory 19. Then, a movement evaluating circuit 21 calculates the inter-two frame moving vector and the inter-plural frame moving vector based on the output data of the memory 22. At that time, the DCT encoder 1 transmits the compressed picture data, the moving vector calculated by a circuit 23, and the inter-two frame moving vector to a DCT decoder. Moreover, a subtracting circuit 11 operates a digital arithmetic operation, and calculates difference data between the output data of a movement compensating circuit 20 and the inputted picture data. The difference data can be encoded and compressed, and the error of predicted data can be compensated, so that the error storage in the time axial direction can be suppressed to the minimum.

公开(公告)号：JPH06121295A

公开(公告)日：1994-04-28

申请号：JP26578992

申请日：1992-10-05

Applicant: SONY CORP

Inventor： YADA ATSUO ,  HASHINO TSUKASA

IPC: H04N5/92 ,  H04N19/00 ,  H04N19/115 ,  H04N19/124 ,  H04N19/13 ,  H04N19/136 ,  H04N19/176 ,  H04N19/196 ,  H04N19/46 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/89 ,  H04N19/91 ,  H04N19/98 ,  H04N7/13

Abstract: PURPOSE:To prevent deterioration in picture quality at the time of dubbing by reducing fluctuation of quantization distortion due to an infinitesimal fluctuation of a dynamic range between upper and lower threshold levels. CONSTITUTION:A dynamic range detection circuit 3 obtains a dynamic range DR specified by a maximum value MAX and a minimum value MIN of plural picture element data included in a block and picture element data in a block are coded in an allocation bit number suitable for the dynamic range DR obtained in the unit of blocks in the high efficiency coder, and an area of a certain range is provided to an upper and a lower threshold level of the dynamic range DR representing a boundary where the allocation bit number is changed and a bit length decision circuit 6 is provided to allocate a different bit number from an allocation bit number decided corresponding to the upper and lower threshold level in an area of a certain range.

公开(公告)号：JPH0686248A

公开(公告)日：1994-03-25

申请号：JP23619692

申请日：1992-09-03

Applicant: SONY CORP

Inventor： YADA ATSUO ,  HASHINO TSUKASA

IPC: H04N19/00 ,  H04N19/115 ,  H04N19/126 ,  H04N19/132 ,  H04N19/134 ,  H04N19/136 ,  H04N19/149 ,  H04N19/176 ,  H04N19/196 ,  H04N19/42 ,  H04N19/423 ,  H04N19/46 ,  H04N19/50 ,  H04N19/587 ,  H04N19/60 ,  H04N19/62 ,  H04N19/625 ,  H04N19/65 ,  H04N19/70 ,  H04N19/85 ,  H04N19/91 ,  H04N19/98 ,  H04N7/13

Abstract: PURPOSE:To realize a three-dimensional block encoding without increasing the scale of a hardware, and to improve a compressing efficiency by discriminating removable blocks in an objective frame from the preceding and succeeding frames in a time-base direction against a frame to be processed, and removing the blocks. CONSTITUTION:The digital picture data of frame units inputted from an input terminal 1 are inputted to an encoding circuit 2, and the coefficient data of block units are inputted through frame memories 3 and 4 to a discriminating circuit 5. The circuit 5 discriminates whether or not the coma drop is valid based on each block DCT coefficient of a K frame and the before and behind K-1 K+1 frames in the time-base direction, and outputs a flag indicating that the coma is valid. The flag is transmitted to a block removal circuit 6, a calculating circuit 12, a switch 7, and an output terminal 1. The circuit 6 operates the coma drop, the DCT coefficients of the K, K-1, and K+1 frames are transmitted through a weighting circuit 8, and a delay circuit 9. quantized by a quantizing circuit 10, variable length-encoded by an encoding circuit 11, and outputted from a terminal 13.

公开(公告)号：JPH05328202A

公开(公告)日：1993-12-10

申请号：JP14682892

申请日：1992-05-14

Applicant: SONY CORP

Inventor： KONDO TETSUJIRO ,  FUJIMORI YASUHIRO ,  UCHIDA MASASHI ,  HASHINO TSUKASA

IPC: G03B17/00 ,  G03B5/00 ,  H04N5/232

Abstract: PURPOSE:To obtain a natural picture output by stopping hand blur correction when the correlation of the border of a corrected picture interpolated by peripheral picture data from a peripheral memory is small. CONSTITUTION:The device is provided with a motion vector detection section 10, a correction signal generating section 20, a correction section 30 and a correction control section 40, and the video data of surrounding part corresponding to a correction range of a picture based on the video data outputted via a selector 35 are written in a peripheral memory 34. Then a correction control section 40 detects the correlation of a border of a corrected picture resulting from correcting the data with surrounding picture data from the peripheral memory 34 and stops the camera shake correction when the correlation is small. Even when a moving object is in existence at the border or mis-detection takes place at the detection of a motion vector, no breaking is caused to the correction picture due to production if mis-matching in the output picture even when mis-detection takes place and camera shake correction processing is surely applied to an input video signal by the correction section 30.