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公开(公告)号：JPH05161114A
公开(公告)日：1993-06-25
申请号：JP32477891
申请日：1991-12-09
Applicant: SONY CORP
Inventor： TAKASHIMA MASATOSHI , OIKAWA YUKA
Abstract: PURPOSE:To reduce the memory capacity by connecting a 4-phase time inversion circuit in parallel with the post-stage of an HPF composed of a digital filter, applying high pass processing to a time inversion signal obtained from them, applying time base inversion to the resulting signal and adding the signal to a current input signal. CONSTITUTION:An input signal (a) is fed to 4-phase time base inversion circuits 52-55 via an HPF 51. The signal is given to the circuits 52-55 and read from them while time is deviated by the time corresponding to the impulse response converging time. Then the output signal is supplied selectively to HPFs 58, 59 with changeover switches 56, 57, in which high pass processing is applied and a synthesis output signal (g) is obtained via a changeover switch 60. Then the signal (g) is subjected to time base inversion by a time inversion circuit 61 and the signal is added to the signal (a) via a limiter 27 and a horizontal nonlinear emphasizing output signal (i) is obtained. Thus, the memory capacity used for the time base inversion circuit is reduced and the circuit scale is decreased.
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公开(公告)号：JPH05161113A
公开(公告)日：1993-06-25
申请号：JP32212991
申请日：1991-12-05
Applicant: SONY CORP
Inventor： TAKASHIMA MASATOSHI , NITTA HAJIME
Abstract: PURPOSE:To reduce the memory capacity by decreasing number of time inversion circuits in the emphasis circuit. CONSTITUTION:A 1st high pass output signal (b) resulting from an input signal (a) subject to high-pass processing is fed to a time inversion circuit 41 and a 1st high pass output signal (c) whose time axis is inverted is fed to a 2nd high pass filter 42, the signal whose time axis is inverted is subject to high pass processing and a 2nd high pass output signal (d) is obtained. Furthermore, the input signal (a) is added to a limiter output signal (g) resulting from the 2nd high pass output signal (d) subject to limiter processing and the sum output signal (i) is again subject to time axis inversion. Thus, an emphasis output signal (j) whose phase characteristic is linear is outputted with respect to the input signal (a). Through the constitution above, since number of time inversion circuits in use is reduced, the circuit scale is decreased.
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公开(公告)号：JPH05153624A
公开(公告)日：1993-06-18
申请号：JP34243791
申请日：1991-11-30
Applicant: SONY CORP
Inventor： TAKASHIMA MASATOSHI , OIKAWA YUKA
Abstract: PURPOSE:To reduce the deterioration in a picture quality at the processing of a video signal by selecting a waveform of a YS guard signal interposed between a color difference signal and a luminance signal to be a waveform nearly equal to that of a reference YC guard signal. CONSTITUTION:A YC guard signal SY1 generated by a prescribed ROM circuit is interposed between a color difference signal C and a luminance signal Y at a time division multiplex circuit 32. The signal SY1 is formed in such a way that its level is sequentially decreased from the vicinity of an achromatic level to the vicinity of a black level, and its waveform is selected nearly equal to a waveform of a reference YC guard signal when the signal is processed by a horizontal NLE circuit 12. Thus, even when the inserted signal is replaced with the reference guard signal and the result is subjected to de-emphasis processing, waveform distortion after demodulation is reduced to reduce the deterioration in the picture quality.
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公开(公告)号：JPH0576027A
公开(公告)日：1993-03-26
申请号：JP26309291
申请日：1991-09-13
Applicant: SONY CORP
Inventor： NISHIMURA AKIRA , TAKASHIMA MASATOSHI
Abstract: PURPOSE:To prevent the blurring in the contour part of a displayed picture by varying a coefficient by which noise components are multiplied by noise reduction control data according to the detection level of color difference data and removing the noise components multiplied by the coefficient from the color difference data. CONSTITUTION:The difference data supplied to a delay circuit 89 are delayed for a time required for a data processing from an HPF 90 to a coefficient multiplying circuit 92, and supplied to a subtracter 94. The noise components multiplied by the coefficient varied according to the noise reduction control data are subtracted from the color difference data by the subtracter 94, so that the noise reducing processing can be operated to the color difference data, and the obtained data can be outputted through an output terminal 95. Thus, the coefficient by which the noise components are multiplied can be prevented from being excessively increased, and the noise components in an always optimal level can be subtracted from the color difference data, so that the original signal components except the noise components can be prevented from being removed, and the generation of the deterioration of a waveform can be prevented.
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公开(公告)号：JPH04180492A
公开(公告)日：1992-06-26
申请号：JP30907890
申请日：1990-11-15
Applicant: SONY CORP
Inventor： SAKAMOTO ETSURO , TAKASHIMA MASATOSHI
Abstract: PURPOSE:To execute the recording and reproducing of a good video signal of no distortion to a signal after deemphasis by giving the nonlinear emphasis of a vertical direction on the poststage of the LPF of the vertical direction to remove return distortion. CONSTITUTION:A luminance signal Y is supplied to a TDM encoder through a vertical nonlinear emphasis circuit 31Y and chroma signals PR, and PB are supplied to vertical nonlinear emphasis circuits 31R and 31B through LPFs 32R and 32B of a vertical direction and are supplied to a TDM encoder 4. The signal Y is taken out through a nonlinear deemphasis circuit 33Y, the signals PR, and PB are supplied to interpolating filters 34R and 34B through a vertical linear deemphasis circuit and the interpolation of the vertical direction to making lines sequential is executed. Waveform distortion can be prevented and good recording and reproducing can be executed with a simple constitution by giving the nonlinear emphasis of the vertical direction of the chroma signal on the poststage of the LPFs 32R and 32B of the vertical direction in this way.
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Patent Agency Ranking
公开(公告)号：JPH0198178A
公开(公告)日：1989-04-17
申请号：JP25669887
申请日：1987-10-12
Applicant: SONY CORP
Inventor： TAKASHIMA MASATOSHI , IIDA HIROYUKI , WAKAHARA TATSUYA
IPC: G11B27/17
Abstract: PURPOSE:To count the accurate number of frames even at the time of low speed tape travel when a CTL signal is not regenerated by generating a pseudo CTL signal for counting screen number from a reproduction control (CTL) signal and an FG signal accompanied by the rotation of a capstan. CONSTITUTION:A slow micro computer 11 generates the pseudo CTL signal from the regenerating CTL signal from a CTL head 6 and simultaneously counts the FG signal from an FG head 9 in a built-in counter 25 so as to generate the pseudo CTL signals. The pseudo CTL signals are supplied to a mode computer 14 counted in a built-in counter 20 and the number of the frame screens are counted. At that time, an allowance flag is reset by the preceding pseudo CTL signal and the counter 20 is controlled. By such a constitution, accurate frame counting is executed even when the regenerating CTL signal is not detected at the time of low speed tape travel, when a system shifts from a still reproduction to a slow reproduction.
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公开(公告)号：JP2009060659A
公开(公告)日：2009-03-19
申请号：JP2008270181
申请日：2008-10-20
Inventor： TAKASHIMA MASATOSHI , NARITA HIDEYUKI , MURAYAMA AKIYOSHI , ITO YOSHIYUKI , HIRANAKA DAISUKE
IPC: H04L12/70 , H04L12/701 , H04L12/725 , H04L29/00 , H04N7/15 , H04N21/24
Abstract: PROBLEM TO BE SOLVED: To provide a data transmission method and data transmission system for improving transmission band utilization efficiency and reducing transmission costs. SOLUTION: When transmitting a plurality of data streams among multiple points by a plurality of terminals MT31-MT34 disposed on a network, the plurality of data streams are transmitted to networks of different properties, respectively. After transmission to the networks, the data streams are combined and transmitted to the terminals. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供一种用于提高传输频带利用效率并降低传输成本的数据传输方法和数据传输系统。 解决方案：当通过设置在网络上的多个终端MT31-MT34在多个点之间发送多个数据流时，多个数据流分别被发送到不同属性的网络。 在传输到网络之后，将数据流组合并发送到终端。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2006157853A
公开(公告)日：2006-06-15
申请号：JP2005039602
申请日：2005-02-16
Inventor： HASHIMOTO YASUHIRO , NAGONE MASAMICHI , TAKASHIMA MASATOSHI
IPC: H04N19/00 , H04N19/115 , H04N19/124 , H04N19/136 , H04N19/146 , H04N19/15 , H04N19/159 , H04N19/196 , H04N19/503 , H04N19/577 , H04N19/61 , H04N19/625 , H04N19/91
Abstract: PROBLEM TO BE SOLVED: To provide an image coding apparatus and method in which image quality will not occur in a rapidly changing transient state, even if a complicated image rapidly changes into image of simple contents or in the reverse case. SOLUTION: An encoder 20 comprises a VBR control unit 22 for determining the quantization (Q) scale VBRq of a VBR (variable bit rate); a maximum CBR control unit 23A for determining the Q scale CBRmaxq of a maximum CBR (fixed bit rate); a minimum CBR control unit 23B for determining the Q scale CBRminq of a minimum CBR; and a quantization scale comparison unit 25. In the quantization scale comparison unit 25, VBRq and CBRmaxq are first compared to select the greater one, and the selected greater one and CBRminq are then compared, to select the smaller one. An image compression-coding unit 24 performs coding, using the quantization scale QSC selected in the quantization scale comparison unit 25. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation: 要解决的问题：即使复杂的图像迅速变成简单内容的图像，或者在相反的情况下，提供一种图像编码装置和方法，其中在快速变化的瞬态中图像质量不会发生。 解码：编码器20包括用于确定VBR（可变比特率）的量化（Q）比例VBRq的VBR控制单元22。 用于确定最大CBR（固定比特率）的Q标度CBRmaxq的最大CBR控制单元23A; 用于确定最小CBR的Q标度CBRminq的最小CBR控制单元23B; 和量化比例比较单元25.在量化比例比较单元25中，首先比较VBRq和CBRmaxq以选择较大的一个，然后比较所选择的较大的一个和CBRminq，以选择较小的一个。 图像压缩编码单元24使用在量化比例比较单元25中选择的量化比例QSC来执行编码。（C）2006年，JPO和NCIPI
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公开(公告)号：JP2005080004A
公开(公告)日：2005-03-24
申请号：JP2003309208
申请日：2003-09-01
Inventor： GU SEIRETSU , TAKASHIMA MASATOSHI , HIRANAKA DAISUKE
IPC: H04N19/50 , H04N19/124 , H04N19/152 , H04N19/174 , H04N19/196 , H04N19/625 , H04N19/85 , H04N19/91 , H04N7/32
Abstract: PROBLEM TO BE SOLVED: To generate encoded data whose image deterioration can be prevented and which can be decoded by a standard decoding device.
SOLUTION: Since a skip code D12 composed of data following an MPEG2 system instead of encoded data D6 can be outputted when an actually encoded code amount increases more than a predicted code amount by providing a VBV (video buffering verifier) occupancy amount calculating part 21 for calculating an occupancy amount in a VBV buffer and a skip control part 23 and skip code generating part 13 for outputting the skip code D12 when the VBV buffer causes underflow, the underflow of the VBV buffer and output encoded data D13 which can be normally recognized without using a special detection circuit or the like can be generated and outputted.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：产生可以防止图像劣化并且可以由标准解码装置解码的编码数据。 解决方案：由于通过提供VBV（视频缓冲验证器）占用量计算，当实际编码代码量增加超过预测代码量时，可以输出由MPEG2系统之后的数据组成而不是编码数据D6组成的跳过代码D12 用于计算VBV缓冲器中的占有量的部分21以及当VBV缓冲器引起下溢时输出跳过代码D12的跳过控制部分23和跳过代码生成部分13，可以是VBV缓冲器和输出编码数据D13的下溢 可以生成并输出通常识别而不使用特殊的检测电路等。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2004048191A
公开(公告)日：2004-02-12
申请号：JP2002200483
申请日：2002-07-09
Inventor： TAKASHIMA MASATOSHI , YANAGIDA YUKIO , GU SEIRETSU
IPC: H03M7/30
Abstract: PROBLEM TO BE SOLVED: To provide a quantizer and a quantizing method which efficiently execute the quantization.
SOLUTION: A quantizer 10 for the MPEG 4 comprises a quantizing scale generator 11 for generating a quantizing scale value (q_scale), a first arithmetic unit 12 for executing a 1/2 rounding operation, a second arithmetic unit 13 for executing a 2/3 rounding operation, a selector 14 for selecting a rounding operation expression, and a controller 15. The quantizer 10 quantizes an original value (coef) being an integer, based on a specified quantizing scale (q_scale) being 0 or a natural number, and outputs an output value (C). To execute the 3/4 rounding operation, the quantizer 10 uses an equation Y=sign(X)*{|X|-(q_scale+1)/2}/(2*q-scale).
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：提供有效执行量化的量化器和量化方法。 解决方案：用于MPEG 4的量化器10包括用于生成量化比例值（q_scale）的量化比例生成器11，用于执行1/2舍入运算的第一运算单元12，用于执行1/2舍入运算的第二运算单元13 2/3舍入操作，用于选择舍入操作表达式的选择器14和控制器15.量化器10基于指定的量化标度（q_scale）为0或自然数量化作为整数的原始值（coef） ，并输出输出值（C）。 为了执行3/4舍入操作，量化器10使用等式Y = sign（X）*ä¾X¾-（q_scale + 1）/ 2} /（2 * q-scale）。 版权所有（C）2004，JPO
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