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1. 发明申请

US20170230559A1 METHOD AND APPARATUS FOR AUTOMATIC STAGE SCENE DETECTION 有权
公开(公告)号：US20170230559A1
公开(公告)日：2017-08-10
申请号：US15016590
申请日：2016-02-05
申请人： Motorola Mobility LLC
发明人： Yin-Hu Chen , Valeriy Marchevsky , Peter A. Matsimanis
IPC分类号： H04N5/235
CPC分类号： H04N5/2353 , H04N5/2351 , H04N5/2352 , H04N5/2354 , H04N5/2356 , H04N5/57 , H04N9/833
摘要： A method and apparatus provide automatic stage scene detection. A first image of a scene can be captured using a frame luma for automatic exposure control. A brightness contrast can be calculated between a center region of the first image and areas surrounding the center region of the first image. A brightness value can be ascertained for the entire first image. The first image can be determined to be a stage scene image based on the brightness contrast being greater than a stage scene contrast threshold and the brightness value for the entire first image being less than a stage scene brightness value threshold. The frame luma for the automatic exposure control can be adjusted for correct exposure of the center region of the first image in response to determining the first image is a stage scene.

2. 发明授权

US5758013A Digital magnetic recording/reproducing apparatus and cassette digital magnetic recording/reproducing apparatus 失效
标题翻译：数字磁记录/再现装置和磁带盒数字磁记录/重放装置
公开(公告)号：US5758013A
公开(公告)日：1998-05-26
申请号：US650547
申请日：1996-05-20
申请人： Shigeo Kizu , Hidenari Ikeda , Masahiro Nakashika , Yasuyoshi Nishikawa , Toshinobu Murakami , Keisuke Ogi , Fumihiko Murakami
发明人： Shigeo Kizu , Hidenari Ikeda , Masahiro Nakashika , Yasuyoshi Nishikawa , Toshinobu Murakami , Keisuke Ogi , Fumihiko Murakami
IPC分类号： G11B5/008 , G11B5/09 , G11B15/087 , G11B27/032 , G11B27/036 , G11B27/11 , G11B27/30 , G11B27/32 , H04N9/79 , H04N9/804 , H04N9/83 , H04N9/888 , H04N5/91
CPC分类号： G11B15/087 , G11B27/032 , G11B27/036 , G11B27/11 , G11B27/3027 , G11B27/3036 , G11B27/32 , G11B27/323 , H04N9/7925 , H04N9/804 , G11B2220/655 , G11B2220/90 , G11B5/00878 , G11B5/09 , H04N9/833 , H04N9/888
摘要： A digital magnetic recording/reproducing apparatus comprising a unit for recording high-definition information including video information and audio information, which is based on a first high-definition television scheme, on a recording medium in accordance with a second high-definition television scheme, the first high-definition television scheme having a first data format of a first amount of information smaller than a second amount of information of a second data format of the second high-definition television scheme, the recording unit including a circuit for allocating a recording area corresponding to a difference between the first amount of information and the second amount of information as a free recording area on which any information is selectively recorded, to match the first amount of information with the second amount of information.
摘要翻译：一种数字磁记录/再现装置，包括用于在根据第二高清晰度电视方案的记录介质上记录基于第一高清晰度电视方案的包括视频信息和音频信息的高清晰度信息的单元，第一高清晰度电视方案具有第一数据量的第一数据格式，该第一数据格式小于第二高清晰度电视方案的第二数据格式的第二信息量，所述记录单元包括用于分配记录区域的电路对应于第一信息量和第二信息量之间的差作为其上有选择地记录任何信息的自由记录区域，以将第一信息量与第二信息量相匹配。

3. 发明授权

US06480668B1 Signal processing circuit 失效
标题翻译：信号处理电路
公开(公告)号：US06480668B1
公开(公告)日：2002-11-12
申请号：US09364068
申请日：1999-07-30
申请人： Tsuyoshi Muroya , Kohei Murayama
发明人： Tsuyoshi Muroya , Kohei Murayama
IPC分类号： H04N591
CPC分类号： H04N9/833
摘要： A recording apparatus operates in any one of a standard mode and a high-quality mode. The apparatus records a video signal of a standard format during the standard mode of operation. The apparatus records a video signal of a high-quality format during the high-quality mode of operation. A signal processing circuit for use in the apparatus includes a first device for subjecting a first signal to a nonlinear emphasis process to convert the first signal into a second signal. A second device operates for selecting one of the first signal and the second signal in response to whether the apparatus operates in the standard mode or the high-quality mode, and for outputting the selected signal as a third signal. A third device operates for subjecting the third signal to a nonlinear de-emphasis process to convert the third signal into a fourth signal. A fourth device operates for selecting one of the third signal and the fourth signal in response to whether the apparatus operates in the standard mode or the high-quality mode, and for outputting the selected signal as a fifth signal. A fifth device operates for separating a sync signal from the fifth signal. During the standard mode of operation of the apparatus, the first device selects the first signal, and the fourth device selects the third signal. During the high-quality mode of operation of the apparatus, the first device selects the second signal, and the fourth device selects the fourth signal.
摘要翻译：记录装置以标准模式和高质量模式中的任何一种操作。该装置在标准操作模式下记录标准格式的视频信号。该装置在高质量操作模式下记录高质量格式的视频信号。用于该装置的信号处理电路包括：第一装置，用于对第一信号进行非线性加重处理，以将第一信号转换成第二信号。响应于设备是以标准模式还是高质量模式操作，第二设备用于选择第一信号和第二信号之一，并将所选信号作为第三信号输出。第三装置用于对第三信号进行非线性去加重处理，以将第三信号转换成第四信号。第四装置响应于装置是以标准模式还是高质量模式操作，用于选择第三信号和第四信号中的一个，并将所选信号作为第五信号输出。第五装置用于从第五信号分离同步信号。在设备的标准操作模式期间，第一设备选择第一信号，第四设备选择第三信号。在设备的高质量操作模式下，第一设备选择第二信号，第四设备选择第四信号。

4. 发明授权

US5113265A Apparatus for determining recording mode of frequency-modulated video signal 失效
标题翻译：用于确定调频视频信号的记录模式的装置
公开(公告)号：US5113265A
公开(公告)日：1992-05-12
申请号：US407309
申请日：1989-09-14
申请人： Yasuhito Kobayashi , Junichi Matsuo
发明人： Yasuhito Kobayashi , Junichi Matsuo
IPC分类号： H04N9/83
CPC分类号： H04N9/833
摘要： An apparatus determines a recording mode of a frequency-modulated video signal read out from a recording medium. The apparatus extracts, from demodulated video signals, pulse signals related to vertical and horizontal synchronization signals. With consideration of a period defined by these pulse signals, the apparatus sets a predetermined period, in which, a signal containing a sync tip frequency component of the frequency-modulated signal is counted to determine the recording mode depending on a resultant count.
摘要翻译：一种装置确定从记录介质读出的调频视频信号的记录模式。该装置从解调的视频信号中提取与垂直和水平同步信号相关的脉冲信号。考虑到由这些脉冲信号定义的周期，该装置设定预定周期，其中，对包含频率调制信号的同步尖端频率分量的信号进行计数，以根据结果计数确定记录模式。

5. 发明授权

US4991027A Circuit for detecting a video mode 失效
标题翻译：用于检测视频模式的电路
公开(公告)号：US4991027A
公开(公告)日：1991-02-05
申请号：US324758
申请日：1989-03-17
申请人： Hajime Enoki
发明人： Hajime Enoki
IPC分类号： H04N5/93 , G11B5/027 , G11B20/06 , H04N5/922 , H04N9/83 , H04N9/87
CPC分类号： H04N9/87 , H04N9/833
摘要： The detection of whether an input FM signal, such as a reproduced signal, which includes particular frequency components representing predetermined information, was recorded in a first or second mode, with the modes having different frequency bands. A first output signal is produced when a particular frequency component in one of the frequency bands is detected and a second output signal is produced when a different frequency component, approximately equal to the difference between twice a predetermined frequency included in the other of the frequency bands and the particular frequency in the one frequency band, is detected. A mode identifying signal indicative of the frequency band occupied by the FM signal is produced in response to the first and second output signals.

6. 发明授权

US5164862A Automatic recording mode detecting apparatus for use in video tape reproducer 失效
标题翻译：自动录像模式检测设备用于视频录像机
公开(公告)号：US5164862A
公开(公告)日：1992-11-17
申请号：US537698
申请日：1990-06-14
申请人： Mitsuo Kawamata
发明人： Mitsuo Kawamata
IPC分类号： H04N5/93 , G11B5/008 , G11B20/06 , H04N5/922 , H04N9/79 , H04N9/83
CPC分类号： H04N9/832 , H04N9/7925 , H04N9/833 , G11B5/00878
摘要： A video signal recording mode detecting apparatus is provided to detect a plurality of recording modes in which frequencies of the carriers in FM video signals are different. By counting the number of pulses that result from wave-shaping the carrier of an FM video signal during a predetermined period, it is possible to detect the particular video signal recording mode being employed. By using a digital detecting mode circuit recording modes having different carriers can be positively detected by relative small-scale circuits suitable for fabrication as integrated circuits.
摘要翻译：提供了一种视频信号记录模式检测装置，用于检测FM视频信号中的载波频率不同的多个记录模式。通过在预定时间段内对由FM视频信号的载波进行波形整形而产生的脉冲数进行计数，可以检测正在采用的特定视频信号记录模式。通过使用具有不同载波的记录模式的数字检测模式电路可以通过适合于作为集成电路制造的相对小尺度电路来积极地检测。

7. 发明授权

US5075803A Signal discriminating device for VTR having expanded dynamic range 失效
标题翻译：用于具有扩展动态范围的录像机的信号识别装置
公开(公告)号：US5075803A
公开(公告)日：1991-12-24
申请号：US333901
申请日：1989-04-06
申请人： Eiji Moro , Hitoshi Akamine , Hiroyuki Torii , Kuniaki Miura
发明人： Eiji Moro , Hitoshi Akamine , Hiroyuki Torii , Kuniaki Miura
IPC分类号： G11B5/027 , G11B20/02 , G11B20/06 , H04N5/93 , H04N9/79 , H04N9/83
CPC分类号： H04N5/93 , H04N9/7925 , H04N9/832 , H04N9/833
摘要： A magnetic recording and reproducing apparatus having a first recording mode and a second recording mode in which a luminance signal of a video signal is converted into FM luminance signal related to a first carrier frequency and to a second carrier frequency so as to be recorded on a magnetic tape includes a discriminating device or discriminating a recording mode in which an FM luminance signal reproduced from a magnetic tape so as to be supplied to a playback circuit has been recorded. The signal discriminating device includes an automatic gain control (AGC) circuit for absorbing a dispersion of the reproduced signal, a discrimiating circuit having a first band-pass filter and a second band-pass filter for processing an output from the AGC circuit so as to discriminate the first and second modes, a detecting circuut to which the reproduced signal is supplied in a parallel fashion with respect to the AGC circuit such that an amplitude of the signal is detected and is then compared with a predetermined value so as to obtain noise information, and a latch circuit for latching an output from the discriminating circuit such that in response to the noise information from the detecting circuit, a previous value of the outpt from the discriminating circuit is held, thus producing a discrimination output of the discriminating device.
摘要翻译：一种具有第一记录模式和第二记录模式的磁记录和再现装置，其中视频信号的亮度信号被转换成与第一载波频率相关的FM亮度信号和第二载波频率，以便被记录在磁带包括识别装置或识别其中已经记录了从磁带再现以提供给重放电路的FM亮度信号的记录模式。信号识别装置包括用于吸收再现信号的色散的自动增益控制（AGC）电路，具有第一带通滤波器和第二带通滤波器的鉴别电路，用于处理AGC电路的输出，以便鉴别第一和第二模式，检测循环以相对于AGC电路的并行方式提供再现信号，使得检测信号的幅度，然后将其与预定值进行比较，以获得噪声信息以及用于锁存来自识别电路的输出的锁存电路，使得响应于来自检测电路的噪声信息，保持来自鉴别电路的前导的先前值，从而产生识别装置的鉴别输出。

8. 发明授权

US4949195A Video signal magnetic recording and/or reproducing apparatus with automatic mode discrimination 失效
标题翻译：具有自动模式识别的视频信号磁记录和/或再现装置
公开(公告)号：US4949195A
公开(公告)日：1990-08-14
申请号：US233654
申请日：1988-06-28
申请人： Naohisa Fujiwara
发明人： Naohisa Fujiwara
IPC分类号： H04N9/80 , G11B5/027 , H04N9/83
CPC分类号： H04N9/833 , H04N9/832
摘要： The invention relates to a mode discrimination circuit for use in a magnetic recording and/or reproducing apparatus. A reproduced luminance signal FM wave is applied to a bandpass filter which passes the frequencies which are in the vicinity of a tip of a synchronizing signal of the standard mode. The output of the bandpass filter is applied to an envelope wave detection circuit which provides a detected output. The detected output is applied to a hold circuit which holds the detected output for a predetermined period of time to thereby output a signal indicative of a standard or high band recording mode of the reproduced luminance signal FM wave.
摘要翻译： PCT No.PCT / JP87 / 00827 Sec。 371日期1988年6月28日第 102（e）日期1988年6月28日PCT提交1987年10月27日PCT公布。出版物WO88 / 03348 日期：1988年5月5日。本发明涉及一种用于磁记录和/或再现装置的模式识别电路。再现亮度信号FM波被施加到通过在标准模式的同步信号的尖端附近的频率的带通滤波器。带通滤波器的输出被施加到提供检测输出的包络波检测电路。检测到的输出被施加到保持电路，该保持电路将检测到的输出保持预定时间段，从而输出指示再现的亮度信号FM波的标准或高频带记录模式的信号。

9. 发明授权

US4786986A Magnetic recording and reproducing apparatus 失效
标题翻译：磁记录和再现设备
公开(公告)号：US4786986A
公开(公告)日：1988-11-22
申请号：US113603
申请日：1987-10-28
申请人： Fumihiko Yamanushi , Atsushi Yoshioka , Katsuyuki Watanabe , Michio Masuda , Kuniaki Miura
发明人： Fumihiko Yamanushi , Atsushi Yoshioka , Katsuyuki Watanabe , Michio Masuda , Kuniaki Miura
IPC分类号： H04N9/83 , H04N5/78
CPC分类号： H04N9/83 , H04N9/833
摘要： A magnetic recording and reproducing apparatus of a cassette type has a first and a second recording mode converting a luminance signal of a video signal into an FM luminance signal having a first and a second carrier frequency and recording the FM luminance signal on a magnetic tape respectively. When the FM luminance signal is to be recorded according to the second recording mode, a magnetic tape having an excellent short wavelength recording characteristic is used for recording. A cassette containing this magnetic tape is provided with a configurational feature on its upper or lower half, and a detector for detecting this feature is disposed in the apparatus. When the detector detects that a magnetic tape is adapted for recording according to the first recording mode, the FM luminance signal is recorded according to the first recording mode, but when the detector detects that the magnetic tape is adapted for recording according to the second recording mode, the user can select either the first recording mode or the second recording mode as desired. A discriminating circuit is disposed in the reproducing system to discriminate as to whether the FM luminance signal was recorded according to the first recording mode or the second recording mode, and, on the basis of the result of discrimination by the discriminating circuit, the reproduced FM luminance signal is automatically processed in a processing circuit with a processing characteristic corresponding to the recording mode.

10. 发明申请

US20170302841A1 METHOD AND APPARATUS FOR AUTOMATIC STAGE SCENE DETECTION 审中-公开
公开(公告)号：US20170302841A1
公开(公告)日：2017-10-19
申请号：US15635145
申请日：2017-06-27
申请人： Motorola Mobility LLC
发明人： Yin-Hu Chen , Valeriy Marchevsky , Peter A Matsimanis
IPC分类号： H04N5/235
CPC分类号： H04N5/2353 , H04N5/2351 , H04N5/2352 , H04N5/2354 , H04N5/2356 , H04N5/57 , H04N9/833
摘要： A method and apparatus provide automatic stage scene detection. A first image of a scene can be captured using a luminance for automatic exposure control. A brightness contrast between a center region of the first image and areas surrounding the center region of the first image can be calculated. A brightness value can be ascertained for the entire first image. Whether the luminance of the first image should be adjusted can be determined based on the brightness contrast being greater than a contrast threshold and the brightness value for the entire first image being less than a brightness value threshold. The luminance for the automatic exposure control can be adjusted for correct exposure of the center region of the first image in response to determining the luminance of the first image should be adjusted. A second image of the scene can be captured based on automatic exposure control using the adjusted luminance.

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