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1. 发明专利

JP2001008924A X-RAY DIAGNOSTIC SYSTEM 失效
公开(公告)号：JP2001008924A
公开(公告)日：2001-01-16
申请号：JP18709199
申请日：1999-06-30
申请人： MORI EIZO , JAPAN BROADCASTING CORP , NHK ENGINEERING SERVICES INC
发明人： MORI EIZO , TANIOKA KENKICHI , OKAWA YUJI , KUBOTA SETSU , MOCHIZUKI AKIRA , YAMAGUCHI KOICHI , HYODO KAZUYUKI
IPC分类号： A61B6/00
摘要： PROBLEM TO BE SOLVED: To provide an X-ray diagnostic system capable of imaging a microvasente that can not be realized by usual medical facilities even with its structure at relatively low cost. SOLUTION: There are provided at least an X-ray irradiation device 1 which can irradiate monochromatic X-rays on an iodine absorption edge with exposure at least over 7.7×10-4 (C/kg) per second, the X-ray irradiation device 1 which can irradiate monochromatic X-rays on a gadolinium absorption edge with exposure at least over 7.7×10-5 (C/kg) per second, an X-ray imaging device 2 which images an X-ray L which is irradiated from the X-ray irradiation device 1 and passed through a subject H as an image of which sensitivity is 8 times larger than that of a saticon tube and whose resolution is over 6 (1p/mm) directly or through a fluorescent plate device and an image display unit which can indicate the image with the resolution on an X-ray diagnostic system.

2. 发明专利

JPH10248027A S/N IMPROVING DEVICE 失效
公开(公告)号：JPH10248027A
公开(公告)日：1998-09-14
申请号：JP4911097
申请日：1997-03-04
申请人： HITACHI LTD , JAPAN BROADCASTING CORP
发明人： TSURU YASUTAKA , NAKAJIMA MITSUO , KOJIMA NOBORU , NINOMIYA YUICHI , IZUMI YOSHINORI , NAEMURA MASAHIDE , FUKUDA ATSUSHI , YAMAGUCHI KOICHI , GOSHI SEIICHI
IPC分类号： H04N5/21 , H04B1/10
摘要： PROBLEM TO BE SOLVED: To set an optimum shift amount automatically at all times by employing a DC shift type noise reducer. SOLUTION: An original input signal A is fed to a reference signal generating means 4, in which a reference signal is generated by predicting it that no noise is superimposed on the input signal. The reference signal B and a delayed original input signal A' are fed to a shift direction discrimination means 11, in which a DC shift direction of the original input signal A' is discriminated, a DC shift means 6 applies DC shift to the original input signal A' in a direction in response to a shift direction signal C by an amount in response to a shift amount control signal I. A blanking extract means 12 and a noise amount detection means 13 detect a noise amount H from an output signal E of the DC shift means 6 and a shift amount control means 14 generates a shift amount control signal I in response to the increase/decrease in the noise amount H.

3. 发明专利

JPH09233489A NOISE REDUCTION CIRCUIT 失效
公开(公告)号：JPH09233489A
公开(公告)日：1997-09-05
申请号：JP3639796
申请日：1996-02-23
申请人： SHARP KK , JAPAN BROADCASTING CORP
发明人： KURIHARA RYOICHI , IZUMI YOSHINORI , NINOMIYA YUICHI , YAMAGUCHI KOICHI , GOSHI SEIICHI , NAEMURA MASAHIDE , FUKUDA ATSUSHI
IPC分类号： H04N5/208 , H04N9/64
摘要： PROBLEM TO BE SOLVED: To provide a noise reduction circuit for chrominance signal for a television receiver, etc., with which the digital signal processing of image is enabled for providing a remarkable noise reduction effect without any blurr of image. SOLUTION: A chrominance signal inputted from an input terminal 1 is inputted to a subtraction circuit 2, contour detection circuit 4 and adder circuit 6. At the subtraction circuit 2, the difference between a signal delayed by a one-picture element delay circuit 3 and the input signal is found and inputted to a non-linear processing circuit 5. The signal from the one-picture element delay circuit is a noise removed signal and this differential signal is a signal composed of a noise component and the contour component of image. The contour signal of the contour detection circuit 4 is inputted to the non-linear processing circuit 5 as well, only the signal of the noise component is outputted from this differential signal by controlling the prescribed input/output signal characteristics of the non-linear processing circuit 5 corrsponding to this contour signal. And this output and the input signal are added by the adder circuit 6 so that the noise can be removed.

4. 发明专利

JPH08214192A REDUCING METHOD FOR NOISE OF TELEVISION VIDEO SIGNAL 失效
公开(公告)号：JPH08214192A
公开(公告)日：1996-08-20
申请号：JP1907495
申请日：1995-02-07
申请人： JAPAN BROADCASTING CORP
发明人： IZUMI YOSHINORI , YAMAGUCHI KOICHI , GOSHI SEIICHI , NAEMURA MASAHIDE , FUKUDA ATSUSHI
IPC分类号： H04N5/21
摘要： PURPOSE: To reduce noise by checking correlation of signals for each picture element and averaging signals with consecutive correlation. CONSTITUTION: Each picture element of a video signal is moved sequentially from the left to the right on a screen for each picture element sequentially and from the upper to the lower for each scanning and a small block with a predetermined size on the screen around a noted picture element being a center picture element is set by a small block processing 1. A signal difference with respect to the center picture element is obtained sequentially from an adjacent picture element to remote picture elements in each direction of two dimensions around the center picture element in the set small block. So long as a threshold level discrimination processing section 6 discriminates the signal difference to be a set threshold level or below, the signal value of the picture element is outputted as an object of signal averaging of the noted picture element to the signal value. When the signal difference exceeds the threshold level, the picture element signals in the direction are not objects of averaging and an output signal of the noted picture element is obtained from the signal outputted as plural averaging objects after selective discrimination.

5. 发明专利

JPH0837607A ENHANCEMENT METHOD FOR RECEIVED IMAGE 失效
公开(公告)号：JPH0837607A
公开(公告)日：1996-02-06
申请号：JP17392094
申请日：1994-07-26
申请人： JAPAN BROADCASTING CORP
发明人： NAEMURA MASAHIDE , IZUMI YOSHINORI , GOSHI SEIICHI , FUKUDA ATSUSHI , YAMAGUCHI KOICHI
IPC分类号： H04N5/14 , H04B1/62 , H04N5/208 , H04N7/015
摘要： PURPOSE:To improve the enhancement processing for improvement of the picture quality by applying the processing A to a received components signal S to supress its small and large amplitude components into the nonlinear shapes and adding the signal that undergone again the processing A through a BPF to the delayed signal S. CONSTITUTION:A received signal 1 is inputted to an addition part 6 via the nonlinear pre-processing and post-processing circuits 3 and 5 which perform the nonlinear processing to suppress the small and large amplitude components of signals and also via a BPF 4. Meanwhile the signal 1 is delayed by a delay circuit 2 by a degree equal to the delayed variables produced by the BPF 4 as well as the circuits 3 and 5 of the enhancement signal generation parts 3-5 and inputted to the part 6. The part 6 secures the coincidence of timing phases between the output of the circuit 2 and the enhancement signal that is extracted from the processed signal of the circuit 3 by the BPF 4 and then processed and outputted by the circuit 5 and outputs the enhancement signal. Thus the part that causes the factors such as the noises, etc., to deteriorate the picture quality can be eliminated, and only the part that contributes to the improvement of picture quality of a received image is enhanced. As a result, the picture quality of the image can be improved.

6. 发明专利

JPH06165131A VERTICAL LOW PASS FILTER CIRCUIT FOR DETECTING MOTION 失效
公开(公告)号：JPH06165131A
公开(公告)日：1994-06-10
申请号：JP31844292
申请日：1992-11-27
申请人： JAPAN BROADCASTING CORP
发明人： GOSHI SEIICHI , NAEMURA MASAHIDE , YAMAGUCHI KOICHI , FUKUDA ATSUSHI , NINOMIYA YUICHI
IPC分类号： H04N7/015 , H03H17/02 , H04N7/00 , H04N19/423 , H04N19/50 , H04N19/80 , H04N19/85 , H04N7/137
摘要： PURPOSE:To improve motion detecting accuracy and to remarkably improve picture quality by efficiently reducing return in a motion detecting circuit. CONSTITUTION:An inputted motion detection signal is fetched into field memory circuits 1, 2 and delayed by two fields in each field and one of the motion detecting signal delayed only by two fields through the circuits 1, 2 and the inputted motion detecting signal of the current field is selected by a switch 5 in each field. A vertical filtering signal is generated by an 1H delay line 6, an adder and a coefficient unit 9 and an adder 8 applies intra-frame vertical filtering processing to a motion detecting signal delayed only by one field through the circuit 1 based on the vertical filtering signal.

7. 发明专利

JPH05137121A FIELD RATE CONVERTING METHOD FOR TELEVISION SIGNAL 失效
公开(公告)号：JPH05137121A
公开(公告)日：1993-06-01
申请号：JP29563391
申请日：1991-11-12
申请人： JAPAN BROADCASTING CORP
发明人： IZUMI YOSHINORI , GOSHI SEIICHI , YAMAGUCHI KOICHI
IPC分类号： H04N7/01
摘要： PURPOSE:To obtain an excellent converted image by generating a TV signal having a new frame unit between different frames, generating a converted field by the repetition of a field conforming to a prescribed field ratio conversion by its TV signal and obtaining a converted image completed by a frame unit again against its converted field. CONSTITUTION:The TV signal by a first one-field is accumulated in a video memory 7, a field inversion switch 11 becomes a video memory side S1 and no signal is supplied to one input terminal of a two-dimensional LPF. Subsequently, when the signal of a second field is supplied, the signal is accumulated in the memory 7, and on the other hand, the signal of a first field is outputted to one input terminal of an LPF 13 and also, transferred to a video memory 9. In this case, the switch 11 is changed over to an input side S2 and the signal of a second field is supplied to the other input terminal of the LPF 13 and an inter-field interpolation processing of the signals of a first and a second fields is executed. Thereafter, in the same manner, an inter-frame interpolation processing is completed.

8. 发明专利

JPH0591369A NONLINEAR EDGE SIGNAL GENERATOR FOR MUSE DECODER 失效
公开(公告)号：JPH0591369A
公开(公告)日：1993-04-09
申请号：JP24740891
申请日：1991-09-26
申请人： FUJITSU LTD , JAPAN BROADCASTING CORP
发明人： TAKAHASHI HIDENAGA , OTOBE YUKIO , YOSHIDA MASAHIRO , NINOMIYA YUICHI , IZUMI YOSHINORI , GOSHI SEIICHI , YAMAGUCHI KOICHI
IPC分类号： H04N5/208 , H04N5/44 , H04N5/455 , H04N7/015 , H04N9/69 , H04N11/08 , H04N11/24
摘要： PURPOSE:To eliminate the need for a nonlinear edge signal use frame memory by de-emphasizing a signal read from a frame memory storing an original waveform signal to be de-emphasized to extract the nonlinear edge signal. CONSTITUTION:The generator is provided with an emphasis circuit 5 emphasizing a MUSE signal in one preceding frame read from a frame memory 3 and outputting the MUSE signal in one preceding frame subject to emphasis and with a nonlinear edge signal extract circuit 6 extracting a nonlinear edge signal in one preceding frame from the MUSE signal in one preceding frame subject to emphasis. Then a signal read from the frame memory 3 for a video signal is emphasized at a receiver side, the emphasized signal is generated by the receiver side and the nonlinear edge signal is extracted from the signal and the nonlinear edge signal is immediately extracted from the received MUSE signal A. Thus, the frame memory for the nonlinear edge signal is not required.

9. 发明专利

JPH0478297A PHASE ADJUSTMENT METHOD FOR LUMINANCE SIGNAL AND CHROMINANCE SIGNAL IN HIGH VISION RECEIVER 失效
公开(公告)号：JPH0478297A
公开(公告)日：1992-03-12
申请号：JP18792590
申请日：1990-07-18
申请人： JAPAN BROADCASTING CORP
发明人： YAMAGUCHI KOICHI , IZUMI YOSHINORI , GOSHI SEIICHI
IPC分类号： H04N11/08 , H04J3/00 , H04N7/00 , H04N7/015 , H04N11/24
摘要： PURPOSE:To observe even a very small phase shift of a luminance signal and a chrominance signal on a display tube screen with magnification as a decreased beat phase change of both the signals by using an adjustment signal prepared separately. CONSTITUTION:A beat caused when two signal frequencies are slightly deviated is used and one clock difference with respect to a frequency of 48.6MHz subject to reduction is displayed on a display tube with magnification. For example, let the frequency of a luminance signal be omega1, then a signal having a frequency (omega1+p) deviated very slightly (=p) from the frequency omega1 is given to at least one of chrominance signals. As a result, a signal outputted from a MUSE decoder is an RGB signal obtained resulting from the addition and subtraction at a de-matrix from the luminance signal and the chrominance signal. When a phase difference (x) (deviation) exists between the luminance signal and the chrominance signal, a phase difference of (x) is caused in a beat signal of the lightness in the output. As a result, a change in the phase of the beat signal appearing on the screen is magnified more on the screen than the deviation of the original signals. The difference of the phase between the luminance signal and the chrominance signal in the unit of 48.6MHz clock is detected by reading the change in the phase of the beat onto the display tube screen.

10. 发明专利

JPH0435471A HIGH DEFINITION RECEIVER 失效
公开(公告)号：JPH0435471A
公开(公告)日：1992-02-06
申请号：JP13959690
申请日：1990-05-31
申请人： JAPAN BROADCASTING CORP , TOSHIBA CORP , TOSHIBA AVE KK
发明人： NINOMIYA YUICHI , YAMAGUCHI KOICHI , OMURA TOSHIRO , SHINKAI TAKAHIRO , IGARASHI YOICHI , FUNAYAMA SATOSHI
IPC分类号： H04N5/12 , H04N7/00 , H04N7/015
摘要： PURPOSE:To surely detect synchronization step-out by providing a synchronization step-out detection means detecting whether frame synchronization is stepped out or not and a means resetting a frame pulse generation means when a synchronization step-out signal is obtained from this synchronization step-out detection means. CONSTITUTION:When detecting the synchronization step-out in comparison to an external frame pulse included in the signal from the outside and an internal frame pulse generated in the inside, a means 40 is provided to make the pulse width of the internal frame pulse at the time of processing a second MUSE signal narrower than that of a first MUSE signal processing time. In this case, a synchronization step-out detection circuit 41 detects whether the pulse of the external frame pulse exists inside the pulse width of the internal frame pulse or not, and obtained the detection signal as the synchronizing state when existing and as the synchronization step-out state when not existing. When the synchronization step-out state, a filter 34, a horizontal counter 38, and a vertical counter 39 are reset by the detection signal to set to the initial state. Thus, the synchronizing state can be accurately adjusted.

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