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1. 发明公开

EP0063737A3 Video recorder with improved sound reproduction 失效
标题翻译：具有改进声音再现的视频录像机
公开(公告)号：EP0063737A3
公开(公告)日：1984-08-08
申请号：EP82103095
申请日：1982-04-10
申请人： LICENTIA PATENT-VERWALTUNGS-GMBH
发明人： KLUTH, HANS-JURGEN, ING. GRAD.
IPC分类号： G11B5/027 , H04N5/92 , H04N9/835 , H04N9/497
CPC分类号： H04N9/8355

2. 发明公开

EP0206752A1 Apparatus for recording and reproducing a video signal and an audio signal. 失效
标题翻译：装置，用于记录和再现视频信号和音频信号。
公开(公告)号：EP0206752A1
公开(公告)日：1986-12-30
申请号：EP86304688
申请日：1986-06-17
申请人： SONY CORP
发明人： SHIBATA MASAHIRO C O PATENTS D , TSUJIBAYASHI TATSUO C O PATENT , SATO HIROYUKI C O PATENTS DIVI , MACHIDA YOSHINORI C O PATENTS
IPC分类号： G11B5/02 , G11B27/032 , G11B27/036 , H04N5/7826 , H04N5/928 , H04N9/82 , H04N9/83 , H04N9/835 , H04N9/87 , H04N5/782 , G11B27/02
CPC分类号： G11B27/036 , G11B27/032 , G11B2220/90 , H04N5/7826 , H04N5/928 , H04N9/8216 , H04N9/835
摘要： An apparatus for recording and reproducing a video signal and an audio signal (which are recorded in different areas or portions of each slant track on a tape) includes first and second rotary heads (H 1, H2) for recording and reproducing the video and audio signals in alternate tracks, and a playback circuit (2, 3, 4) for processing luminance and chrominance components of the video signal reproduced by the first and second rotary heads (H1, H2) when scanning video signal-containing areas of the respective tracks. The apparatus also includes a circuit (20) for supplying a new audio signal from an input terminal (19) to the rotary heads (H1, H2) for recording, a signal generator (7) for generating a predetermined signal to be substituted for the processed luminance component, and a muting circuit (15) for muting the reproduced chrominance component. The predetermined signal from the signal generator (7) is substituted for the processed luminance component, and the chrominance component is muted by the muting circuit (15) during recording of the audio signal in place of a previously recorded audio signal, thereby suppressing noise bars which might otherwise appear in the reproduced picture.

3. 发明授权

EP0673173B1 Digital information recording apparatus and digital information recording and reproducing apparatus 失效
标题翻译：记录和记录和再现装置的数字信息
公开(公告)号：EP0673173B1
公开(公告)日：2002-08-28
申请号：EP95103753.0
申请日：1995-03-15
申请人： Hitachi, Ltd.
发明人： Amada, Nobutaka , Noguchi, Takaharu , Arai, Takao
IPC分类号： H04N9/835 , G11B20/10
CPC分类号： G11B20/00007 , G11B15/125 , G11B15/1875 , G11B15/4673 , G11B20/10527 , G11B20/1866 , G11B27/3027 , G11B2020/10592 , G11B2220/90 , H04N5/78263 , H04N5/9201 , H04N5/9261 , H04N5/93

4. 发明公开

EP0924700A2 Standby signal for audio FM demodulator 审中-公开
标题翻译： BereitschaftssignalfürAudio-FM-Demodulator
公开(公告)号：EP0924700A2
公开(公告)日：1999-06-23
申请号：EP98123572.4
申请日：1998-12-10
申请人： DEUTSCHE THOMSON-BRANDT GMBH
发明人： Kluth, Hans-Jürgen
IPC分类号： G11B20/00 , H04N9/835 , H04N5/92 , G11B15/14
CPC分类号： G11B15/14
摘要： In order to reproduce the audio signal which has been recorded as an FM audio signal in the slanted tracks of a recording medium in tape form by means of read/write heads (2, 3) arranged on a rotating head drum (1), it is possible to use PLL circuits which are designed as FM demodulators (31, 32) and in each case form a phase-locked loop with a VCO. FM demodulators (31, 32) of this type generally operate satisfactorily e.g. in video recorders with improved audio signal recording, but there is the risk of the frequency of the VCO of the respective FM demodulator (31, 32) drifting when the read/write head (2, 3) assigned to it leaves the wrap-around region of the recording medium on the head drum 1 and only being able to be synchronized with the FM audio signal when the said head re-enters the recording medium.
According to the invention, each FM demodulator (31, 32) is supplied with the FM audio signal even when the read/write head (2, 3) assigned to it leaves the wrap-around region of the recording medium on the head drum 1, by the respective FM demodulator (31, 32) being fed the audio signal which is read by the respective other read/write head (2, 3).
摘要翻译：为了通过布置在旋转磁头鼓（1）上的读/写磁头（2,3），将以磁带形式记录介质的倾斜磁道中已被记录为FM音频信号的音频信号再现可以使用被设计为FM解调器（31,32）的PLL电路，并且在每种情况下都与VCO形成锁相环。这种类型的FM解调器（31,32）通常以令人满意的方式工作。在具有改进的音频信号记录的视频记录器中，当分配给它的读/写头（2,3）离开环绕时，存在相应的FM解调器（31,32）的VCO的频率漂移的风险磁头鼓1上的记录介质的区域，并且当所述磁头重新进入记录介质时，只能与FM音频信号同步。根据本发明，即使当分配给它的读/写头（2,3）将记录介质的环绕区域留在磁头鼓1上时，每个FM解调器（31,32）也被提供有FM音频信号由相应的FM解调器（31,32）馈送由相应的另一个读/写头（2,3）读取的音频信号。

5. 发明公开

EP0924700A3 Standby signal for audio FM demodulator 审中-公开
标题翻译：对于音频FM解调器就绪信号
公开(公告)号：EP0924700A3
公开(公告)日：2006-07-05
申请号：EP98123572.4
申请日：1998-12-10
申请人： DEUTSCHE THOMSON-BRANDT GMBH
发明人： Kluth, Hans-Jürgen
IPC分类号： G11B20/00 , G11B20/24 , G11B15/14 , H04N5/92 , H04N9/802 , H04N9/835 , G11B20/06
CPC分类号： G11B15/14
摘要： In order to reproduce the audio signal which has been recorded as an FM audio signal in the slanted tracks of a recording medium in tape form by means of read/write heads (2, 3) arranged on a rotating head drum (1), it is possible to use PLL circuits which are designed as FM demodulators (31, 32) and in each case form a phase-locked loop with a VCO. FM demodulators (31, 32) of this type generally operate satisfactorily e.g. in video recorders with improved audio signal recording, but there is the risk of the frequency of the VCO of the respective FM demodulator (31, 32) drifting when the read/write head (2, 3) assigned to it leaves the wrap-around region of the recording medium on the head drum 1 and only being able to be synchronized with the FM audio signal when the said head re-enters the recording medium.
According to the invention, each FM demodulator (31, 32) is supplied with the FM audio signal even when the read/write head (2, 3) assigned to it leaves the wrap-around region of the recording medium on the head drum 1, by the respective FM demodulator (31, 32) being fed the audio signal which is read by the respective other read/write head (2, 3).

6. 发明公开

EP0673173A1 Digital information recording apparatus and digital information recording and reproducing apparatus 失效
标题翻译： Aufzeichnungs- und Aufzeichnungs- undWiedergabegerätfürdigitale信息。
公开(公告)号：EP0673173A1
公开(公告)日：1995-09-20
申请号：EP95103753.0
申请日：1995-03-15
申请人： HITACHI, LTD.
发明人： Amada, Nobutaka , Noguchi, Takaharu , Arai, Takao
IPC分类号： H04N9/835 , G11B20/10
CPC分类号： G11B20/00007 , G11B15/125 , G11B15/1875 , G11B15/4673 , G11B20/10527 , G11B20/1866 , G11B27/3027 , G11B2020/10592 , G11B2220/90 , H04N5/78263 , H04N5/9201 , H04N5/9261 , H04N5/93
摘要： In a digital information recording and reproducing apparatus of a rotary magnetic head type for selecting and recording a plurality of digital information signals having different transmission rates and for selectively reproducing the recorded signal, a high-rate digital information signal (S1) and a low-rate digital information signal (S2) are inputted for selection of either one thereof to be converted by a recording-system encoder (30) into two channels of recording signals (SR1, SR2). When recording the high-rate signal (S1), the rotary drum (50) is turned at a rotation speed (R1) and the magnetic tape (60) is fed at a feed speed (V1) to conduct 4-track azimuth recording of the signals for each rotation of the rotary drum by the first to fourth magnetic heads (51, 52, 53, 54). To record the low-rate signal (S1), the rotary drum (50) is turned at a rotation speed (R2) substantially equal to the first rotation speed (R1) and the magnetic tape (60) is fed at a feed speed (V2) almost equal to (V1/N) so as to achieve 4-track azimuth recording of record signals (SR1, SR2) compressed on a time axis to 1/N of the original signals for every N rotations of the rotary drum (50) by the magnetic heads (51, 52, 53, 54). A reproducing system receives two channels of signals (SP1, SP2) reproduced by the first to fourth magnetic heads (51, 52, 53, 54) and conducts for the signals such processes reverse to those of the encoding process of the recording system as the equalization, demodulation, error correction, and deinterleaving processes, thereby attaining the original digital information signals.
摘要翻译：在用于选择和记录具有不同传输速率的多个数字信息信号并用于选择性地再现记录信号的旋转磁头类型的数字信息记录和再现装置中，高速数字信息信号（S1）和低速数字信息信号输入速率数字信息信号（S2），以选择要由记录系统编码器（30）转换成两个通道的记录信号（SR1，SR2）。当记录高速率信号（S1）时，旋转滚筒（50）以转速（R1）转动，磁带（60）以进给速度（V1）进给，以进行四轨方位记录用于通过第一至第四磁头（51,52,53,54）旋转磁鼓的每个旋转的信号。为了记录低速率信号（S1），旋转磁鼓（50）以大致等于第一转速（R1）的旋转速度（R2）转动，磁带（60）以进给速度（ V2）几乎等于（V1 / N），以便实现在旋转磁鼓（50）的每N个旋转中在时间轴上压缩到原始信号的1 / N的记录信号（SR1，SR2）的4磁道方位记录）通过磁头（51,52,53,54）。再现系统接收由第一至第四磁头（51,52,53,54）再现的两个通道的信号（SP1，SP2），并对与这些记录系统的编码处理相反的信号进行传导，均衡，解调，纠错和去交错处理，从而获得原始的数字信息信号。

7. 发明公开

EP0087114A3 VIDEO TAPE RECORDER 失效
标题翻译：录像机
公开(公告)号：EP0087114A3
公开(公告)日：1986-09-03
申请号：EP83101457
申请日：1983-02-16
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： HITOTSUMACHI, SHUZO
IPC分类号： H04N5/76 , G11B5/008 , G11B5/53 , G11B15/02 , H04N5/7826 , H04N9/79 , H04N9/802 , H04N9/835 , H04N5/782 , H04N9/83
CPC分类号： G11B5/0086 , G11B5/00878 , G11B5/534 , G11B15/02 , H04N5/7826 , H04N9/7921 , H04N9/802 , H04N9/8355

8. 发明专利

JPH0937296A RECORDING AND REPRODUCING DEVICE, RECORDER AND REPRODUCING DEVICE 失效
公开(公告)号：JPH0937296A
公开(公告)日：1997-02-07
申请号：JP20147095
申请日：1995-07-14
申请人： VICTOR COMPANY OF JAPAN
发明人： IWAMI SOSUKE , NISHIYAMA HIROSHI
IPC分类号： H04N5/765 , H04N5/77 , H04N5/7826 , H04N9/802 , H04N9/804 , H04N9/808 , H04N9/81 , H04N9/83 , H04N9/835 , H04N9/87
摘要： PROBLEM TO BE SOLVED: To reduce the number of recording and reproducing heads, the circuit scale and the adjustment man-hours by converting a luminance signal, a color difference signal, and a voice signal to a time base compressed multiplex signal and recording/reproducing the signal. SOLUTION: The camcorder is made up of a CCD image pickup processing section 40 providing an output of the picked-up image, a digital signal processing section 41 applying recording and reproducing processing to digitized video signal and audio signal by time base companding processing, an FM analog signal processing section 42 applying recording and reproducing processing to analog video signal and audio signal, and a recording and reproducing magnetic head 110. The audio signal with the luminance signal and the color difference signal is converted into a time base compression multiplex signal and the signal is recorded/reproduced. This method is effective to reduce number of recording elements of the recording means and the reproducing elements of the reproduction means. Furthermore, an erasure head is not required and desirable from the standpoint of simplified configuration.

9. 发明专利

JPH06295527A MAGNETIC RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JPH06295527A
公开(公告)日：1994-10-21
申请号：JP11546891
申请日：1991-04-19
申请人： VICTOR COMPANY OF JAPAN
发明人： TSUSHIMA TAKUYA , HIGURE SEIJI
IPC分类号： G11B5/02 , G11B20/00 , G11B20/10 , H04N5/782 , H04N5/7826 , H04N5/93 , H04N9/82 , H04N9/835 , H04N9/87
摘要： PURPOSE:To previously and surely prevent abnormal sounds from being generated by the disturbance of a video signal (vertical synchronizing signal) at the time of recording or the like at the time of reproducing when deeply recording a PCM voice signal in the same magnetic tape together with the recording of the video signal. CONSTITUTION:On the circumferential face of a rotary drum (D), magnetic heads (H3 and H4) for recording and reproducing video signal to record and reproduce the video signal at the surface layer part of a magnetic tape (T) and magnetic heads (H1 and H2) for recording and reproducing voice signal to record and reproduce the PCM voice signal at the deep layer part of the magnetic layer of the magnetic tape earlier than these magnetic heads for recording and reproducing video signal are provided. Further, a video signal disorder detection circuit (20) is provided to interrupt the recording of the PCM voice signal or to output a signal showing silence by detecting the disturbance of the input video signal when the input video signal is distorted when recording the PCM voice signal simultaneously with the recording of the video signal, or to output the PCM voice signal after making it into the shape of a non-code word when this PCM voice signal contains a correction code.

10. 发明专利

JPH0686219A DIGITAL MODULATOR USED FOR SUB-NYQUIST SAMPLING OF RASTER-SCANNED SAMPLE OF IMAGE SIGNAL STRENGTH 失效
公开(公告)号：JPH0686219A
公开(公告)日：1994-03-25
申请号：JP363993
申请日：1993-01-12
申请人： SAMSUNG ELECTRONIC
发明人： KURISUTOFUAA EICHI SUTOROORU , HAAMAN JIEI UETSUKENBUROTSUKU
IPC分类号： H04N5/93 , H04L27/00 , H04N5/76 , H04N5/92 , H04N7/12 , H04N9/78 , H04N9/797 , H04N9/80 , H04N9/82 , H04N9/83 , H04N9/835 , H04N9/84 , H04N9/898
摘要： PURPOSE: To match a sampling speed with a Nyquist interval of a prescribed maximum frequency by applying sub-Nyquist sampling to a digital video signal to display sample signals obtained by applying raster-scanning to the intensity of a video signal so as to obtain overlapped video signals with a reduced frequency band. CONSTITUTION: A digital subtractor 92 is used to subtract a response of a horizontal low-pass filter 91 consisting of a weighting and sum circuit from a luminance signal properly delayed and obtained from a tapped digital delay line 90 and a bisection circle digital multiplier 93 multiplies a factor less than the unity with a response from the horizontal high-pass filter before the response is overlapped with a base band signal. The multiplication factor to compress the response from the horizontal high-pass filter is decided as follows; that is, an absolute value circuit 90 is used to rectify the response from the horizontal high-pass filter with respect to the luminance signal and the response from the horizontal high-pass filter is fed to the tapped digital delay line 95 and the output therefrom is fed to a horizontal low-pass filter 96 consisting of a weighting and sum circuit. Thus, the response from the horizontal high-pass filter is compressed and reduced.

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