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1. 发明授权

US4651230A Apparatus for detecting and compensating drop-outs in an audio and video signal 失效
标题翻译：用于检测和补偿音频和视频信号中的丢失的装置
公开(公告)号：US4651230A
公开(公告)日：1987-03-17
申请号：US466212
申请日：1983-02-14
申请人： Shoji Hagita , Shinji Kakuyama
发明人： Shoji Hagita , Shinji Kakuyama
IPC分类号： H04N5/93 , G11B20/06 , H04N9/835 , H04N9/88 , H04N9/491 , H04N5/76 , H04N5/78
CPC分类号： H04N9/8355 , H04N9/88
摘要： Drop-outs are detected and compensated for in an apparatus for reproducing video and audio signals that have been recorded as first and second mixed signals in adjacent first and second parallel tracks, respectively, on a magnetic record medium such as a tape and in which each of the mixed signals is comprised of a video signal mixed with at least one frequency modulated audio signal, in the case of monaural, having a respective carrier frequency. The recorded mixed signals are reproduced by two magnetic heads that scan the adjacent first and second tracks to reproduce alternately the mixed signals recorded thereon, and drop-outs are detected in the reproduced signals. The audio signals are separated from the reproduced mixed signals, frequency demodulated and combined to form a substantially continuous or reconstituted demodulated audio signal. A compensator is provided in the demodulated audio line and is responsive to the detection of drop-outs by a detector therefor to produce a substantially continuous demodulated audio signal, in which drop-outs are compensated. A second dropout compensator is provided for compensating the video signal for dropouts and the second dropout compensator is located in the line carrying the luminance component of the video signal and is responsive to the original drop-out detector output derived from the reproduced signals. The drop-out detector may be responsive to the reproduced mixed signals either prior to combining into a signal or subsequent to such combining. Still further, the drop-out detection may be responsive to drop-outs in the frequency modulated audio signals after the latter have been separated from the reproduced mixed signals.
摘要翻译：在用于再现已经在相邻的第一和第二平行轨道中记录为第一和第二混合信号的视频和音频信号的装置中，检测和补偿丢弃，在诸如磁带的磁记录介质上，并且其中每个在具有相应载波频率的单声道的情况下，混合有信号的视频信号与至少一个调频音频信号混合。记录的混合信号由扫描相邻的第一和第二磁道的两个磁头再现，以便在其上记录的混合信号交替地再现，并且在再现的信号中检测出丢失。音频信号与再现的混合信号分离，频率解调和组合，以形成基本上连续或重建的解调音频信号。在解调的音频线路中提供补偿器，并且响应于由检测器检测到丢失信号，从而产生基本上连续的解调的音频信号，其中对丢包进行补偿。提供第二压差补偿器用于补偿用于丢失的视频信号，并且第二压差补偿器位于承载视频信号的亮度分量的线中，并且响应于从再现信号导出的原始丢失检测器输出。退出检测器可以在组合成信号之前或之后的这种组合时响应于再现的混合信号。此外，丢失检测可以响应于在调制后的音频信号已经与再现的混合信号分离之后的丢失。

2. 发明授权

US4559567A Apparatus for recording and/or reproducing video and audio signals 失效
标题翻译：用于记录和/或再现视频和音频信号的装置
公开(公告)号：US4559567A
公开(公告)日：1985-12-17
申请号：US457747
申请日：1983-01-13
申请人： Takanori Maruichi , Shoji Hagita
发明人： Takanori Maruichi , Shoji Hagita
IPC分类号： G11B5/027 , G11B20/06 , H04N5/93 , H04N9/835 , H04N9/87 , H04N5/783
CPC分类号： H04N9/87 , H04N5/93 , H04N9/8355
摘要： For providing high-quality reproduction of audio in a video tape recorder (VTR), the video and audio signals are recorded as first and second mixed signals in successive alternately arranged adjacent first and second parallel record tracks, respectively, extending obliquely on a magnetic record tape, with the first and second mixed signals being comprised of respective carriers of different frequencies which are modulated by an audio signal to constitute respective FM audio signals mixed with a video signal. In a normal reproducing mode of the VTR, in which the tape is advanced at a normal speed corresponding to that used for recording, magnetic heads scan substantially along the adjacent first and second record tracks in succession for alternately reproducing the first and second mixed signals therefrom, the FM audio signals are separated from the reproduced mixed signals and then are demodulated for obtaining therefrom respective alternately reproduced portions of the audio signal, and the alternately reproduced portions are sequentially combined to reconstitute the audio signal therefrom. In another reproducing mode in which the tape is advanced at other than its normal speed, the heads scan imperfectly along the record tracks so that the mixed signals are reproduced therefrom with noise particularly when the heads are situated adjacent end portions of the tracks being imperfectly scanned, and a noise compensating circuit is operative, in that other reproducing mode, for removing the noise from the reconstituted audio signal.
摘要翻译：为了在录像机（VTR）中提供高质量的音频再现，视频和音频信号被分别作为第一和第二混合信号记录在相互交替布置的相邻的第一和第二并行记录磁道中，该磁道在磁记录磁带，其中第一和第二混合信号由不同频率的各个载波组成，其由音频信号调制以构成与视频信号混合的相应的FM音频信号。在VTR的正常再现模式中，其中磁带以对应于用于记录的正常速度前进，磁头基本上沿相邻的第一和第二记录磁道连续扫描，以便从其中连续地再现第一和第二混合信号 FM音频信号与再现的混合信号分离，然后被解调以便从其获得音频信号的各个交替再现的部分，并且交替重放的部分被顺序地组合以重新构成音频信号。在另一种再现方式，其中磁带以不同于其正常速度前进，头部沿着记录磁道不完全地扫描，从而混合信号从噪声中再现，特别是当磁头位于轨道的相邻端部不完全扫描时并且噪声补偿电路在另一种再现模式中可操作，用于从重建的音频信号中去除噪声。

3. 发明申请

US20050030581A1 Imaging apparatus, imaging method, imaging system, program 审中-公开
标题翻译：成像设备，成像方法，成像系统，程序
公开(公告)号：US20050030581A1
公开(公告)日：2005-02-10
申请号：US10886900
申请日：2004-07-08
申请人： Shoji Hagita , Hideki Hama , Yuriko Tsuchiya , Masae Takeda , Yuki Muraoka
发明人： Shoji Hagita , Hideki Hama , Yuriko Tsuchiya , Masae Takeda , Yuki Muraoka
IPC分类号： H04N5/225 , G06K1/00 , H04N1/387 , H04N5/232 , H04N5/91 , H04N5/92 , H04N7/18
CPC分类号： H04N5/232
摘要： Presence/absence of a movement between a first unit-image that constitutes the entire image representing the whole imaging area and a second unit-image that constitutes the previous entire image and that is located in the same imaging direction as the first unit-image is determined. When a movement exists between the first and second unit-images, imaging operations for the next entire image are performed with the imaging direction fixed to the first unit-image and its surrounding unit-images, and the imaged unit-images are recorded in the recording medium.
摘要翻译：构成表示整个成像区域的整个图像的第一单位图像与构成上一个整个图像并且位于与第一单位图像相同的成像方向上的第二单位图像之间的运动的存在/不存在是决心。当在第一和第二单位图像之间存在运动时，以成像方向固定到第一单位图像及其周围的单位图像的方式执行下一个整个图像的成像操作，并且将成像的单位图像记录在记录介质。

4. 发明申请

US20060008157A1 Image protection apparatus, imaging apparatus, and program 审中-公开
标题翻译：图像保护装置，成像装置和程序
公开(公告)号：US20060008157A1
公开(公告)日：2006-01-12
申请号：US11174659
申请日：2005-07-06
申请人： Shoji Hagita
发明人： Shoji Hagita
IPC分类号： G06K9/36 , G06K9/00
CPC分类号： H04N1/3333 , G08B13/19643 , G08B13/19663 , G08B13/19673 , G08B13/1968 , G08B13/19686 , H04N1/448 , H04N2201/33357
摘要： An image protection apparatus includes (a) a set-state determining unit that determines a set state regarding a protection function for an image, and (b) a protection process unit that, when the protection function is determined by the set-state determining unit to be in a valid state, selectively performs lossless coding of a specified image region of an input image, thereby to perform a conversion to a state making it difficult to verify an image in a portion corresponding to the specified image region. Thereby, the conversion can be performed to the state making it difficult the image verification by a third person. In addition, when posterior verification of an image is necessary, the image can be played back to an original image.
摘要翻译：图像保护装置包括：（a）确定与图像的保护功能有关的设定状态的设定状态判定单元，以及（b）保护处理单元，当所述设定状态判定单元选择性地执行输入图像的指定图像区域的无损编码，从而进行到难以对与指定图像区域对应的部分中的图像进行验证的状态的转换。由此，可以进行使第三人的图像验证困难的状态的转换。此外，当需要图像的后验时，可以将图像回放到原始图像。

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