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公开(公告)号：JP2001136416A
公开(公告)日：2001-05-18
申请号：JP2000195068
申请日：2000-06-28
Applicant: SONY CORP
Inventor： FUKUDA KYOKO , KOBAYASHI HIROSHI , TOMITA MASAMI
Abstract: PROBLEM TO BE SOLVED: To provide a signal processing unit that can obtain an optimum noise reduction effect depending on a noise level in the case of reducing noise from a video signal. SOLUTION: The signal processing unit consists of a motion vector detection circuit 308 that detects a motion vector from an input video signal, a memory controller 306 that generates a motion correction control signal on the basis of the motion vector corresponding to the input video signal, a noise level detection circuit 310 that detects a noise level of the input video signal on the basis of the result of detection by the motion vector detection circuit 308, a nonlinear processing circuit 303 that applies nonlinear processing with the strength correspondent to the noise level and a 2nd sbutractor 302 that composites the signal subject to nonlinear processing and the input video signal.
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公开(公告)号：JP2001103341A
公开(公告)日：2001-04-13
申请号：JP2000215114
申请日：2000-07-14
Applicant: SONY CORP
Inventor： TOMITA MASAMI , FUKUDA KYOKO , KOBAYASHI HIROSHI
Abstract: PROBLEM TO BE SOLVED: To reduce a noise from a video signal. SOLUTION: The signal processing unit has a motion vector detection circuit 7 that divides a received video signal into 1st blocks to detect a motion vector, a 1st sbutractor 10 that applies motion compensation to the received video signal on the basis of the motion vector to obtain a difference signal between the received video signal and the received video signal of one preceding video unit, an orthogonal transform section 11 that divides the difference signal into 2nd blocks to convert them into signals each having a frequency band, an attenuator 12 that applies nonlinear processing by each frequency band to the signals from the orthogonal transform section 11, and a 2nd sbutractor 14 that synthesizes the signal from the attenuator 12 with the received video image. The border of the 1st blocks has a correlation with the border of the 2nd blocks.
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公开(公告)号：JPH11112980A
公开(公告)日：1999-04-23
申请号：JP27155697
申请日：1997-10-03
Applicant: SONY CORP
Inventor： OTA MASASHI , TAKAHASHI TAKAO , AKIBA TOSHIYA , TOMITA MASAMI , HAMADA TOSHIMICHI , MIZUFUJI TARO , MIYATA MASANARI , NAGATOKU KOUICHI
Abstract: PROBLEM TO BE SOLVED: To provide a signal editer and its method in which joint editing in the unit of frames is conducted with timewise minimum image quality deterioration. SOLUTION: A moving picture expert group(MPEG) encoder 21 compresses image data for each group of picture(GOP) consisting of, e.g. 15 frames. An MPEG decoder 31 expands compression image data read by a read means. The MPEG encoder 21 revises partly the image type of an area in the vicinity of a joint edit point on compression image data read from an optical disk 1a by the read means to establish the processing unit.
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公开(公告)号：JPH1118057A
公开(公告)日：1999-01-22
申请号：JP17074297
申请日：1997-06-26
Applicant: SONY CORP
Inventor： ARAI NAOHISA , TOMITA MASAMI
Abstract: PROBLEM TO BE SOLVED: To attain improvement of retrievability at the time of high-speed reproduction and the reduction in the sense of fatigue or discomfort and to enable efficient retrieval by controlling the number of times of repetition for outputting the intermittent signal of an intermit signal processing means, together with the reading interval of a video signal reading means corresponding to reproduced additional information. SOLUTION: An additional information reproducing processing part 8 reproduces the additional information on the contents of a recorded video signal, together with the video signal on a recording medium 1. When reproducing the video signal from the recording medium 1 at a speed higher than the ordinary reproducing speed, a video signal reading part 2 outputs the intermittent signal by intermittently reading this video signal at every prescribed frame interval corresponding to the reproducing speed. A video signal reproducing processing part 3 outputs the outputted intermittent signals for one frame repeatedly for a prescribed number of times. Corresponding to the additional information reproduced by the additional information reproducing processing part 8, a main control part 7 controls the frame reading interval of the video signal reading part 2 and the number of times of repeated intermit signal outputs from the video signal reproducing processing part 3.
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公开(公告)号：JPH10243341A
公开(公告)日：1998-09-11
申请号：JP4666897
申请日：1997-02-28
Applicant: SONY CORP
Inventor： ARAI NAOHISA , TOMITA MASAMI
Abstract: PROBLEM TO BE SOLVED: To provide an image detector and an image detecting method by which contents can easily be grasped when intermittent images are generated by thinning a moving image. SOLUTION: The video signal of a moving image is inputted to an input signal processing circuit 2. Image memories 3 and 4 store the video signals for the unit of a frame, namely, for the unit of a picture. The image memory 4 surely stores a picture frame timewisely preceding to the picture frame stored in the image memory 3 for one picture frame. A change amount detection circuit 5 operates a change amount by operating the difference of data between the picture frames stored in the image memories 3 and 4. A representative picture frame detection control circuit 6 detects a representative picture by comparing the change amount of image data in the image memories 3 and 4 with a prescribed threshold value. Besides, processing for averagedly detecting an image as the representative picture frame is performed by dynamically changing this threshold value.
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Patent Agency Ranking
公开(公告)号：JPH10233997A
公开(公告)日：1998-09-02
申请号：JP3676397
申请日：1997-02-20
Applicant: SONY CORP
Inventor： ARAI NAOHISA , TOMITA MASAMI
IPC: H04N5/915
Abstract: PROBLEM TO BE SOLVED: To provide a video signal reproducing device and a video signal reproducing method by which an image with less sense of incongruity is reproduced by interpolation process in response to the video content when a video signal recorded intermittently is reproduced. SOLUTION: A video signal of a intermittent image from a monitor video or a video telephone set or the like is received by an input signal processing section 2. A motion vector detection section 5 expands a search area or revises it based on information such as intermittent interval of additional information or the like in the case of detecting a motion vector. Furthermore, the motion vector detection section 5 moves the search area based on the motion vector obtained before. A system control section 8 receiving the motion vector controls an interpolation processing section 6. The interpolation processing section 6 generates an interpolation frame from the intermittent image and synthesizes the interpolation frame with the intermittent image.
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公开(公告)号：JPH10233996A
公开(公告)日：1998-09-02
申请号：JP3675797
申请日：1997-02-20
Applicant: SONY CORP
Inventor： ARAI NAOHISA , TOMITA MASAMI
IPC: H04N5/915
Abstract: PROBLEM TO BE SOLVED: To provide the video signal reproducing device and the video signal reproducing method by which an image with less sense of incongruity is reproduced in the case of detecting parallel displacement of an image when a video signal recorded intermittently is reproduced. SOLUTION: A video signal of an intermittent image from a monitor video or a video telephone set or the like is received by an input signal processing section 2. A system control section 8 detects that an intermittent image is displaced in parallel based on information from an additional information processing section 4 or a motion vector detection section 5. When the system control section 8 detects the parallel displacement, the control section 8 decides number of inserted interpolation frames to be interpolated based on an intermittent interval of the intermittent image detected by an additional information processing section 4 to control an interpolation processing section 6. The interpolation processing section 6 generates an interpolation frame from the intermittent image and synthesizes the interpolation frame with the intermittent image.
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公开(公告)号：JPH10222964A
公开(公告)日：1998-08-21
申请号：JP2256697
申请日：1997-02-05
Applicant: SONY CORP
Inventor： TOMITA MASAMI
Abstract: PROBLEM TO BE SOLVED: To properly select a recording region in already recorded regions in recording a signal and to effectively utilize a storage. SOLUTION: Since an empty capacity is not sufficient for a required capacity, a recording region for newly recorded information is elected out of already recorded regions. For the selective processing, additional information (capacity information and time information) corresponding to the recording region is acquired (28). A lapse time is calculated from the time information and the current time information (29). A required capacity for recording the recording information is compared with the combined capacity of the already recorded recording information (30), a recording capacity that is equal to or more than the required capacity is secured and one with a long lapse time is selected as a recording region (31). The recording information is recorded for the selected recording region.
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公开(公告)号：JPH09312796A
公开(公告)日：1997-12-02
申请号：JP12864996
申请日：1996-05-23
Applicant: SONY CORP
Inventor： TOMITA MASAMI
IPC: H04N5/225 , H04B10/00 , H04B10/11 , H04B10/116 , H04B10/54 , H04B10/548 , H04B10/10 , H04B10/105 , H04B10/22
Abstract: PROBLEM TO BE SOLVED: To provide the optical space transmitter in which an output direction of an optical signal is easily adjusted without new provision for an angle adjustment device. SOLUTION: An optical signal transmitter 30 is provided to a video camera 10. An optical signal output section 50 of the optical signal transmitter 30 is placed to a view finder 20. The direction of the view finder 20 is changed to output an optical signal PS toward an optical signal receiver 70 connecting to a television receiver 60. The receiver 70 receives the optical signal PS and the television receiver 60 displays an image and sounds an audio signal. The angle adjustment device of the view finder 20 is used to easily adjust an output direction of the optical signal PS and it is not required newly the adjustment device to adjust the output direction of the optical signal PS.
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公开(公告)号：JPH09200684A
公开(公告)日：1997-07-31
申请号：JP2212596
申请日：1996-01-12
Applicant: SONY CORP
Inventor： TOMITA MASAMI
Abstract: PROBLEM TO BE SOLVED: To restore an original video signal by surely erasing and interpolating a telop (television of a que) indication inserted into the video signal at a video/ audio signal recording device for receiving and recording television broadcasting. SOLUTION: The video signal, in which telop is inserted, is supplied to a circuit 20 and separated into signals Y and C. The signal Y is digitally converted and written into a memory 22 under the address control of a controller 11. On the other hand, the interpolate signal, in which telop is not inserted, containing original video signal information is supplied to a decoder 28 and converted to interpolate data or interpolate data position data, and the real interpolate signal is generated by a circuit 29. This signal is overwritten on the address corresponding to the telop part in the memory 22 under the control of controller 11 so that the telop part can be erased and interpolated and the original video signal can be restored. Since the telop indication is erased and interpolated while using the interpolate signal, the original video signal can be surely restored.
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