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51. 发明专利

JPH02252369A CONTOUR CORRECTION CIRCUIT FOR CHROMINANCE SIGNAL 失效
公开(公告)号：JPH02252369A
公开(公告)日：1990-10-11
申请号：JP7171189
申请日：1989-03-27
申请人： HITACHI LTD
发明人： OKU MASUO , ABE HIROCHIKA , FUJII YUKIO , TAKAHASHI SUSUMU , IMAMURA OSAMU
IPC分类号： H04N5/208
摘要： PURPOSE:To surely correct the contour of a chrominance signal by detecting a transient part directly from a color difference signal, and further, correcting the contours of both two color difference signals if even one of two color difference signals is the transient part. CONSTITUTION:The chrominance signal is demodulated by a color decoder 1, and differentiated by differentiation circuits 2a, 2b. Derivative signal is led to a logic circuit 61 through absolute circuit 3a, 3b the differentiation circuits 4a, 4b and limiters 5a, 5b. In the circuit 61, the transient part of the color difference signal is determined in conformity to a logic diagram shown in a figure. Namely, it is detected that one of two color difference signal is the transient part. Further, the output of the circuit 61 is inverted by an inverter 62, and multiplied by the primary derivative signal of the color difference signal by multiplication circuits 7a, 7b, and a contour corrected signal is obtained. This signal passes through coefficient multipliers 8a, 8b, and is mixed by adders 10a, 10b together with the color difference signal adjusted at its timing by delay circuits 9a, 9b, and becomes the contour corrected color difference signal.

52. 发明专利

JPH0296493A SIGNAL DELAY PROCESSING CIRCUIT FOR VTR 失效
公开(公告)号：JPH0296493A
公开(公告)日：1990-04-09
申请号：JP24734488
申请日：1988-10-03
申请人： HITACHI LTD
发明人： TAKAHASHI SUSUMU , OKU MASUO , IMAMURA OSAMU , ABE HIROCHIKA , FUJII YUKIO
IPC分类号： H04N9/83
摘要： PURPOSE:To evade the gravity dislocation addition of a signal at the time of double dubbing and to prevent the deterioration of a picture quality by providing a mode discrimination delay means which provides a one-horizontal scanning time difference between the time difference between a luminance signal and a chrominance signal at a reproduced output terminal in a first mode and the same time difference in a second mode. CONSTITUTION:The luminance signal selected by a switch 8 is FM-modulated by an FM-modulator 6, and the chrominance signal selected by a switch 9 is converted into low frequencies by a frequency low range converter 7, and they are added by an adder 5. Thereafter, the signals are amplified by a recording amplifier 4, and recorded on a magnetic tape which is not shown in a figure by magnetic hands 2 and 2'. At the time of reproducing, the recording signals on the tape is alternately reproduced by reproducing heads 3 and 3', amplified by reproducing amplifiers 14 and 14., then linked by a switcher 15, the luminance signal is frequency-compensated by an equalizing circuit 16, and demodulated by an FM demodulator 18. The low-frequency-converted chrominance signal is fetched by a low pass filter 17, and restored to the original frequencies by a frequency high range converter 21.

53. 发明专利

JPH0271689A HIGH DEFINITION VIDEO DISK PLAYER 失效
公开(公告)号：JPH0271689A
公开(公告)日：1990-03-12
申请号：JP22233488
申请日：1988-09-07
申请人： HITACHI LTD
发明人： OKU MASUO , ONISHI KUNIKAZU , KISHI YUJI , FUJII YUKIO , SASAKI TORU
IPC分类号： H04N5/76 , G11B7/00 , G11B7/004 , G11B20/02 , H04N5/93
摘要： PURPOSE:To obtain a high definition video disk player by providing a means reproducing simultaneously 1st and 2nd video signals recorded on the same or other disks and a means synthesizing both signals and decoding a video signal with high definition. CONSTITUTION:The same reference code generator 111 is used for the reproduction of a video disk 101a and a digital audio disk 101b and the synchronizing operation is attained. A detection circuit 116 discriminates information whether it is audio information or high definition information given to the disk 101a. In the information is the audio information, a switch 118 gives reproduction information to a DA converter and an analog signal is sent a terminal B and in the latter case, high definition information is added to the reproduction signal of the disk 101a at a synthesis circuit 121 via a buffer memory 119 and a decoder 120 and the result is sent to a terminal A and a high definition picture is decoded.

54. 发明专利

JPH0265392A VIDEO SIGNAL REPRODUCING DEVICE 失效
公开(公告)号：JPH0265392A
公开(公告)日：1990-03-06
申请号：JP21496088
申请日：1988-08-31
申请人： HITACHI LTD
发明人： KUDO YOSHIMICHI , SAITO ISAO , SATO YASUHIRO , OKU MASUO , FUJII YUKIO
IPC分类号： H04N5/21 , H04N9/87
摘要： PURPOSE:To attain the noise suppression of less after-image generation, etc., by providing an arithmetic circuit to suppress the noise, which is included in a signal based on difference with a signal almost before one field, independently to a luminance signal and a carrier chrominance signal concerning a signal which is separated to the luminance signal and carrier chrominance signal. CONSTITUTION:Data selectors 14 and 21 and switches 27 and 28 are connected to an N-side in a figure. Then, the output of an arithmetic circuit 9 is induced through the data selector 14 to an adder circuit 15 and the output of an arithmetic circuit 17 is induced through a chrominance modulating circuit 22 and the data selector 21 to the adder circuit 15 respectively. Thus, a video signal, for which a noise component is suppressed, is obtained. In a subtracting circuit 10a, the noise component extracted in a coefficient circuit 11 is subtracted from the luminance signal, which is separated in a Y/C separating circuit 8, and the output of the subtracting circuit 10a, namely, the output of the arithmetic circuit 9 obtains the luminance signal, for which the noise component is suppressed. On the other hand, the suppression of the noise component is executed in the arithmetic circuit 17 wholly samely as the luminance signal concerning the chrominance signal. However, concerning the chrominance signal, the carrier chrominance signal separated in the Y/C separating circuit 8 is converted to two color difference signals, for which time-division multiplexing is executed, in a chrominance demodulating circuit 16.

55. 发明专利

JPH01166689A SIGNAL PROCESSING CIRCUIT FOR VIDEO DISK PLAYER 失效
公开(公告)号：JPH01166689A
公开(公告)日：1989-06-30
申请号：JP32395387
申请日：1987-12-23
申请人： HITACHI LTD
发明人： KUDO YOSHIMICHI , OKU MASUO , SAITO ISAO , FUJII YUKIO
IPC分类号： H04N9/77
摘要： PURPOSE:To facilitate the synthesis of a reproduced video signal with an external video signal by inputting the reproduced video signal to a field memory, synchronizing the phases of the external video signal or vertical and horizontal synchronizing signals and a color subcarrier and outputting the result. CONSTITUTION:The reproduced video signal is written in the field memory 5 via an FM demodulator 1, a CCD 2 for time axis correction and an A/D converter 4. A signal read from the field memory 5 is outputted via a SYNC conversion circuit 8 and a D/A converter 9. A write address and readout address are controlled in the field memory 5 so that the reproduced video signal is outputted while synchronizing its phase with that of the external video signal or the vertical and horizontal synchronizing signals and the color subcarrier.

56. 发明专利

JP2011101393A Moving picture recording and reproducing apparatus 审中-公开
标题翻译：移动图像记录和再现设备
公开(公告)号：JP2011101393A
公开(公告)日：2011-05-19
申请号：JP2010276528
申请日：2010-12-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIROI KAZUE , FUJIKAWA YOSHIBUMI , SASAKI NORIKAZU , UEDA RIRI , HAYASHI AKIO , FUJII YUKIO , KAWAGUCHI ATSUO
IPC分类号： H04N5/91 , G11B20/10 , G11B27/00 , G11B27/034 , G11B27/10 , H04N5/93
摘要： PROBLEM TO BE SOLVED: To enable the optimum highlight reproduction in accordance with a category of moving picture data during the highlight reproduction of the moving picture data.
SOLUTION: Characteristic of picture data or audio data is held (1202) for each frame constituting the moving picture data, candidate scenes as candidates in the highlight reproduction of the moving picture data are extracted and ranked depending on the algorithm corresponding to the category of the moving picture data on the basis of the characteristic data of each frame, and the scene for the highlight reproduction is determined (1203) based on the candidate scenes and the ranking process.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了在运动图像数据的高亮度再现期间根据运动图像数据的类别实现最佳高光再现。解决方案：对于构成运动图像数据的每个帧，保持（1202）图像数据或音频数据的特征，根据对应于运动图像数据的算法，提取并排列在运动图像数据的高亮重放中作为候选的候选场景根据每个帧的特征数据的运动图像数据的类别，并且基于候选场景和排序处理确定用于高亮度再现的场景（1203）。版权所有（C）2011，JPO＆INPIT

57. 发明专利

JP2009055637A Information processing apparatus and reproducing scene determination method 有权
标题翻译：信息处理装置和再现场景确定方法
公开(公告)号：JP2009055637A
公开(公告)日：2009-03-12
申请号：JP2008282690
申请日：2008-11-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIROI KAZUE , FUJIKAWA YOSHIBUMI , SASAKI NORIKAZU , UEDA RIRI , HAYASHI AKIO , FUJII YUKIO , KAWAGUCHI ATSUO
IPC分类号： H04N5/91 , H04N5/93
摘要： PROBLEM TO BE SOLVED: To provide a reproduction apparatus of moving image record which can implement optimum highlight reproduction according to a category of moving image data in moving image data highlight reproduction.
SOLUTION: The moving image record reproduction apparatus has a moving image data input means for inputting the moving image, a storage means for storing the moving image, an image recording means for allowing the storage means to store the moving image, a feature generating means for generating features of the moving image, a ranking producing means for ranking according to levels of importance for each scene in the moving image data based on the generated features, a reproducing scene determination means for determining the reproducing scene based on the generated ranking, a reproduction means for reproducing the determined reproducing scene, a display means for displaying the reproduced image, and a category obtaining means for obtaining the category of moving image data, wherein the ranking producing means makes the ranking of the scenes in the input moving image data based on the obtained category.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：解决的问题：提供可以根据运动图像数据高亮度再现中的运动图像数据的类别来实现最佳高亮度再现的运动图像记录的再现装置。解决方案：运动图像记录再现设备具有用于输入运动图像的运动图像数据输入装置，用于存储运动图像的存储装置，用于允许存储装置存储运动图像的图像记录装置，用于产生运动图像的特征的产生装置，用于基于所生成的特征根据运动图像数据中的每个场景的重要程度对其进行排序的排名产生装置，用于基于生成的排名确定再现场景的再现场景确定装置，用于再现所确定的再现场景的再现装置，用于显示再现图像的显示装置和用于获得运动图像数据类别的类别获取装置，其中排序产生装置使得输入运动图像中的场景的排名数据基于获得的类别。版权所有（C）2009，JPO＆INPIT

58. 发明专利

JP2008306742A Video camera 有权
标题翻译：录影机
公开(公告)号：JP2008306742A
公开(公告)日：2008-12-18
申请号：JP2008180883
申请日：2008-07-11
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKAMURA HIROSHI , FUJII YUKIO
IPC分类号： H04N5/91 , G11B20/10 , H04N5/225
摘要： PROBLEM TO BE SOLVED: To control the volume for the narration of a photographer independently of audio of a photographing target even during playback, and further to select whether to record/play back the narration.
SOLUTION: A video camera is provided with a narration microphone for recording the narration of the photographer, an audio encoder independently encodes, for each channel, audio of totally 3 channels obtained from a microphone for Lch recording, a microphone for Rch recording and the narration microphone and generates an audio stream.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：即使在回放期间，也可以独立于拍摄对象的音频来控制摄影者的叙述音量，并进一步选择是否录制/播放叙述。
解决方案：摄像机配备有用于记录拍摄者的叙述的叙述麦克风，音频编码器对于每个通道独立地编码从用于Lch记录的麦克风获得的总共3个通道的音频，用于Rch记录的麦克风和叙述麦克风，并生成音频流。版权所有（C）2009，JPO＆INPIT

59. 发明专利

JP2006302168A Coprocessor and arithmetic control method therefor 审中-公开
标题翻译：其共同作用和算法控制方法
公开(公告)号：JP2006302168A
公开(公告)日：2006-11-02
申请号：JP2005126086
申请日：2005-04-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： EHAMA MASAKAZU , HOSOKI KOJI , NAKADA KEIMEI , FUJII YUKIO , TASHIRO TAKU
IPC分类号： G06F9/38
摘要： PROBLEM TO BE SOLVED: To prevent disposal of processing related to a request for calculation by reason that the processing related to the request for the calculation cannot be performed by the time expected by a CPU core so as to efficiently and certainly execute the processing related to the request for the calculation. SOLUTION: An arithmetic processing time necessary for the processing is calculated from a series of arithmetic processing of the processing requested to a computing unit from the CPU core. A sum of present time and the necessary arithmetic processing time, and a completion request time when it is expected that the arithmetic processing expected by the CPU core is completed are compared, and it is decided whether or not the processing of the request can be completed by the completion request time. A decided result is notified to the computing unit, and the computing unit performs the processing of the new request according thereto. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止处理与计算请求有关的处理，因为与CPU核心期望的时间不能执行与计算请求有关的处理，以便有效地并且肯定地执行与计算请求相关的处理。解决方案：从CPU核心的一系列处理请求到计算单元的算术处理计算处理所需的算术处理时间。比较当前时间和必要的算术处理时间的总和以及期望CPU核心期望的算术处理完成的完成请求时间，并且确定是否可以完成该请求的处理由完成请求时间。将决定结果通知给计算单元，并且计算单元根据该请求执行新请求的处理。版权所有（C）2007，JPO＆INPIT

60. 发明专利

JP2006254100A Detecting method and device for water mark information 有权
标题翻译：水标识信息检测方法及装置
公开(公告)号：JP2006254100A
公开(公告)日：2006-09-21
申请号：JP2005067872
申请日：2005-03-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUJII YUKIO , FUJIKAWA YOSHIBUMI , BANDO TADAAKI
IPC分类号： H04N19/00 , H04N19/467 , H04N19/625 , H04N19/70
摘要： PROBLEM TO BE SOLVED: To provide a device capable of efficiently detecting highly accurate electronic watermark information from images or video streams applied with data compression such as MPEG.
SOLUTION: An MPEG stream 101 from an input unit 6 is input into a quantize scale magnitude determining unit 1 for determining the magnitude of quantize scale and outputting a QS magnitude determination signal indicative of whether electronic watermark should be detected or not and an MPEE decoding portion 2 for decoding an inputted MPEG signal. The quantize scale magnitude determining unit 1 controls a switch 3 so as to supply a frame of smaller QS of the inputted MPEG signal to an electronic watermark extracting portion 4. Since the electronic watermark extracting portion 4 can use a frame of smaller QS for electronic watermark extraction, a highly accurate electronic watermark information can be detected.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够从诸如MPEG之类的数据压缩应用的图像或视频流中有效地检测高精度电子水印信息的装置。解决方案：将来自输入单元6的MPEG流101输入量化尺度确定单元1，用于确定量化标尺的大小，并输出指示是否应检测电子水印的QS幅度确定信号，以及 MPEE解码部分2，用于解码输入的MPEG信号。量化尺度尺度确定单元1控制开关3，以将输入的MPEG信号的较小QS的帧提供给电子水印提取部分4.由于电子水印提取部分4可以使用较小QS的电子水印帧提取，可以检测到高精度的电子水印信息。版权所有（C）2006，JPO＆NCIPI

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